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Sayfa 1

Change for life

Service Manual

GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

Sayfa 2

Table of Contents

Part Ⅰ: Technical Information.......................................................................1
1. Summary.......................................................................................................................1
2. Specifications...........................................................................................................2

2.1 Specification Sheet..................................................................................................2

2.2 Capacity Curve in Different Outdoor Temperature.......................................4

2.3 Cooling Data Sheet in Rated Frequency..........................................................4

2.4 Noise Curve.................................................................................................................5

3. Outline Dimension Diagram........................................................................6

3.1 Indoor Unit...................................................................................................................6

3.2 Outdoor Unit...............................................................................................................7

4. Refrigerant System Diagram.......................................................................9
5. Electrical Part.........................................................................................................10

5.1 Wiring Diagram........................................................................................................10

5.2 PCB Printed Diagram.............................................................................................13

6. Function and Control.......................................................................................17

6.1 Function Buttons of Air Conditioner................................................................17

6.2 Remote Control Operations................................................................................19

6.3 Description of Each Control Operation...........................................................23

6.4 GREE+ App Operation Manual...........................................................................25

6.5 Ewpe Smart App Operation Manual.................................................................26

Part Ⅱ: Installation and Maintenance ..................................................27
7. Notes for Installation and Maintenance..........................................27
8. Installation.................................................................................................................32

8.1 Installation Dimension Diagram........................................................................32

8.2 Installation Parts-checking ................................................................................35

8.3 Selection of Installation Location.....................................................................35

8.4 Requirements for electric connection ............................................................35

Service Manual

Table of Contents

Sayfa 3

Service Manual

8.5 Installation of Indoor Unit....................................................................................35

8.6 Installation of Outdoor Unit.................................................................................37

8.7 Vacuum Pumping and Leak Detection............................................................39

8.8 Check after Installation and Test Operation..................................................39

9.Troubleshooting....................................................................................................40

9.1 Judgement by Flashing LED of Indoor...........................................................40

9.2 How to Check Simply the Main Part of Indoor ............................................43

9.3 How to Check Simply the Main Part of Outdoor..........................................53

9.4 Maintenance Method for Normal Malfunction..............................................55

10. Exploded View and Parts List...............................................................57

10.1 Indoor Unit..............................................................................................................57

10.2 Outdoor Unit...........................................................................................................61

11. Removal Procedure........................................................................................65

11.1 Removal Procedure of Indoor Unit.................................................................65

11.2 Removal Procedure of Outdoor Unit.............................................................80

Appendix:.........................................................................................................................90

Appendix 1: Reference Sheet of Celsius and Fahrenheit...............................90

Appendix 2: Configuration of Connection Pipe..................................................90

Appendix 3: Pipe Expanding Method.....................................................................91

Appendix 4: List of Resistance for Temperature Sensor................................92

Table of Contents

Sayfa 4

Service Manual

Part Ⅰ: Technical Information

1. Summary

Indoor Unit:

GVH24AM-K6DNC7A/I
GVH48AL-K6DNC7A/I

Model List:

No
Model
Product code
Indoor model
Indoor product 

code
Outdoor model
Outdoor 
product code
1
GVH24AM-K6DNC7A
CH156002400
GVH24AM-K6DNC7A/I
CH156N02400
GVH24AM-K6DNC7A/O
CH156W02400
2
GVH48AL-K6DNC7A 
CH156002500
GVH48AL-K6DNC7A/I
CH156N02500
GVH48AL-K6DNC7A/O
CH156W02500

1
Technical Information

Outdoor Unit:

GVH24AM-K6DNC7A/O
GVH48AL-K6DNC7A/O

Remote  Controller:

YAP1F4(WiFi)

Sayfa 5

2. Specifications

2.1 Specification Sheet

Parameter
Unit
Value

Model 
GVH24AM-K6DNC7A 
GVH48AL-K6DNC7A

Product Code
CH156002400 
CH156002500

Rated Voltage
V~
220-240
220-240

Power 
Supply

Rated Frequency
Hz
50
50

Phases
1
1

Power Supply Mode
Outdoor 
outdoor

Cooling Capacity
W
7200 
12500

Heating Capacity
W
7900 
13500

Cooling Power Input
W
2050 
4200

Heating Power Input
W
2330
4200

Cooling Power Current
A
10 
19

Heating Power Current
A
11
19

Rated Input
W
3900 
5400

Rated Current
A
18 
22

Air Flow Volume(SH/H/M/L/SL)  
m

3/h
1250/950/850/750/-
2000/1850/1700/1580/-

Dehumidifying Volume
L/h
2
5

EER 
W/W
3.51 
2.98

COP 
W/W
3.39 
3.21

SEER 
W/W
6.10 
5.6

SCOP 
W/W
4.0
3.7

2
27-42
55-85

Application Area
m

Model of indoor unit
GVH24AM-K6DNC7A/I
GVH48AL-K6DNC7A/I

Product Code
CH156N02400 
CH156N02500

Fan Type
Centrifugal
Centrifugal

Diameter Length(DXL) 
mm
Φ350X130.5
Φ379X180.5

Fan Motor Cooling Speed(SH/H/M/L/SL) 
r/min
470/420/380/330/-
600/560/530/500/-

Fan Motor Heating Speed(SH/H/M/L/SL) 
r/min
470/420/380/330/-
600/560/530/500/-

Output of Fan Motor
W
65
220

Fan Motor RLA
A
/
/

Fan Motor Capacitor 
μF
/
/

Evaporator Form 
Aluminum Fin-copper Tube
Aluminum Fin-copper Tube

Pipe Diameter
mm
Φ7
Φ7

Indoor  Unit 

Row-fin Gap
mm
2-1.3
2-1.4

Coil Length (LXDXW)  
mm
724X25.4X392
876X25.4X472

Swing Motor Model
MP35AA/MP24TA
MP35AB/MP24TA

Output of Swing Motor 
W
2.5/1.5
2.5/1.5

Fuse 
A
5
5

Sound Pressure Level (SH/H/M/L/SL) 
dB (A) 
45/41/38/35/-
53/51/50/48/-

Sound Power Level (SH/H/M/L/SL) 
dB (A) 
60/51/48/45/-
66/-/-/-/-

Dimension (WXHXD) 
mm
507X1770X320
587X1882X394

Dimension of Carton Box (LXWXH)
mm
1985X620X425
2150X735X530

Dimension of Package(LXWXH) 
mm
1988X623X440
2153X738X545

Net Weight  
kg
38
55

Gross Weight
kg
50
77.5

2
Technical Information

Service Manual

Sayfa 6

Service Manual

Model of Outdoor Unit
GVH24AM-K6DNC7A/O
GVH48AL-K6DNC7A/O

Product Code
CH156W02400 
CH156W02500

Compressor Manufacturer/Trademark 
ZHUHAI LANDA COMPRESSOR 

CO., LTD
Compressor Model
QXFS-D25zX090H
QXFS-F428zX450E

Compressor Oil
R68EP
FW68DA or equivalent

Compressor Type
Rotary
Rotary

L.R.A.  
A
24
38

Compressor RLA  
A
11
21

Compressor Power Input
W
2420
4580

Overload Protector
1NT11L 6233/KSD115℃/
HPC115/95U1
/

Throttling Method
Electron expansion valve
Electron expansion valve

Operation Temp
ºC
16~30
16~30

Ambient Temp (Cooling)
ºC
-15~43
-15~43

Ambient Temp (Heating)
ºC
-15~24
-15~24

Condenser  Form 
Aluminum Fin-copper Tube
Aluminum Fin-copper Tube

Pipe Diameter 
mm
Φ7
Φ7

Rows-fin Gap
mm
2-1.4
2-1.4

Coil Length (LXDXW)  
mm
935X38.1X660
1052X38X792

Fan Motor Speed
rpm
800
880 

Output of Fan Motor
W
60
150 

Outdoor Unit 

Fan Motor RLA  
A
0.58
0.95 

Fan Motor Capacitor 
μF
/
/

Air Flow Volume of Outdoor Unit
m

Fan Type
Axial-flow
Axial-flow

Fan Diameter
mm
Φ520
Φ550

Defrosting Method
Automatic Defrosting
Automatic Defrosting

Climate Type
T1
T1

Isolation
I
I

Moisture Protection
IPX4
IPX4

Permissible Excessive Operating 
Pressure for the Discharge Side
MPa
4.3
4.3

Permissible Excessive Operating 
Pressure for the Suction Side
MPa
2.5
2.5

Sound Pressure Level (H/M/L) 
dB (A) 
61/-/-
64/-/-

Sound Power Level (H/M/L) 
dB (A) 
70/-/-
74/-/-

Dimension (WXHXD) 
mm
965X700X396
1010X820X460

Dimension of Carton Box (LXWXH)
mm
1026X455X735
1070X560X853

Dimension of Package(LXWXH) 
mm
1029X458X750
1083X573X973

Net Weight  
kg
53.5
89

Gross Weight
kg
58
100

Refrigerant 
R32
R32

Refrigerant Charge
kg
1.6
2.6

Length
m
5
5

Gas Additional Charge
g/m
40
40

Outer Diameter Liquid Pipe
mm
Φ6
Φ9.52

Connection 

Outer Diameter Gas Pipe
mm
Φ16
Φ16

Pipe

Max Distance Height
m
10
20

Max Distance Length
m
25
30

Note: The connection pipe applies metric diameter.

The above data is subject to change without notice; please refer to the nameplate of the unit.

3
Technical Information

ZHUHAI LANDA COMPRESSOR 

CO,LTD.

3/h
3200
6000

Sayfa 7

Service Manual

2.2 Capacity Curve in Different Outdoor Temperature

Cooling
Heating

120

120

110

110

Capacity ratio(%)

Capacity ratio(%)

100

100

90

90

80

80

Conditions  
Indoor: DB20°C/WB15°C  
Indoor air flow: High  
Pipe length: 5m

70

70

Conditions  
Indoor: DB27°C/WB19°C  
Indoor air flow: High  
Pipe length: 5m

60

60

50

50

40
33
38
43

10 
23 
28 

10
8
-
0
7
-20
-30
-15

Outdoor Temp.(°C)
Outdoor Temp.(°C)

2.3 Cooling Data Sheet in Rated Frequency

Cooling:

Pressure of gas pipe 
connecting indoor and 

Rated cooling condition(°C) 

Inlet and outlet pipe 
temperature of heat exchanger

Fan speed 

Fan speed 

Compressor

(DB/WB)
Model 

of indoor 

of outdoor 

frequency

outdoor unit 

(Hz)
Indoor
Outdoor 
P (MPa) 
T1 (°C)
T2 (°C)

unit

unit 

27/19
35/24
24K
0.9 to 1.1
in:8~11
out:11~14

in:65~75
out:37~43
Super High
High
48

48K
0.9 to 1.1
in:8~11
out:11~14

in:75~85
out:37~43
Super High
High
48

Heaing:

Pressure of gas pipe 
connecting indoor and 

Rated cooling condition(°C) 

Inlet and outlet pipe 
temperature of heat exchanger

Fan speed 

Fan speed 

Compressor

(DB/WB)
Model 

of indoor 

of outdoor 

frequency

outdoor unit 

(Hz)
Indoor
Outdoor 
P (MPa) 
T1 (°C)
T2 (°C)

unit

unit 

20/-
7/6
24K
2.0 to 2.3
in:1~3
out:4~8

in:75~85
out:33~48
Super High
High
56

48K
2.5 to 3.0
in:75~85
out:37~43

in:1~3
out:3~5
Super High
High
68

Instruction:
T1: Inlet and outlet pipe temperature of evaporator
T2: Inlet and outlet pipe temperature of condenser
P: Pressure at the side of big valve 
Connection pipe length: 5 m.

4
Technical Information

Sayfa 8

Service Manual

2.4 Noise Curve

Indoor side noise when blowing

60
65

50
55
40

Noise/dB(A)

30

35
20

10

0
0

low 
 Middle 

Indoor fan motor rotating speed

24K
48K

5
Technical Information

Outdoor side noise when blowing

)
A
(
B
d
/
e
sio
N

45

25
20

40

60
80
100

High
Super High

Compressor frequency/Hz

Sayfa 9

3. Outline Dimension Diagram

3.1 Indoor Unit

+

:
'

Model
W
H
D
24K
507
1770
320
48K
587
1882
394

6
Technical Information

Service Manual

Unit:mm

Sayfa 10

Service Manual

3.2 Outdoor Unit

GVH24AM-K6DNC7A/O

7
Technical Information

897
340

0
0
7

965
396

560

4
6
3

Unit:mm

Sayfa 11

GVH48AL-K6DNC7A/O

944

1010

610

8
Technical Information

Service Manual

460

820

530

490

Unit:mm

Sayfa 12

Service Manual

4. Refrigerant System Diagram

 Indoor unit   
 Outdoor unit  

Suction
Heat 
exchanger
(evaporator)  
Heat 
exchanger
(condenser)  

Connection pipe specification:
Liquid : 1/4" (6 mm)24K

Liquid : 3/8" (9.52 mm)48K

Gas : 5/8" (16mm) 

9
Technical Information

Gas pipe
side

 Valve

4-Way valve 

Discharge

Accumlator 

 Compressor  

Liquid pipe
side

 Valve

Strainer
Electronic 
expansion 
Strainer

COOLING 

HEATING 

Sayfa 13

Service Manual

5. Electrical Part

5.1 Wiring Diagram

● Instruction

Symbol
Symbol Color 
Symbol
Symbol Color 
Symbol
Name

YE
Yellow
BN
Brown
COMP
Compressor

RD
Red
BU
Blue
Grounding wire

YEGN
Yellow/Green
BK
Black
/
/

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Sayfa 14

Service Manual

GVH48AL-K6DNC7A/I

11
Technical Information

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Sayfa 15

Service Manual

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GVH24AM-K6DNC7A/O

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12
Technical Information

Sayfa 16

Service Manual

5.2 PCB Printed Diagram

Indoor unit

24K

● Top view

7
8
9
10

6

● Bottom view
5

13
Technical Information

1
Copper pin terminal of 
communication wire
2
Needle stand of display board 

3
Needle stand of up&down 
swing

4
Needle stand of left&right 
swing 

1

5
Needle stand of temperature 
sensor 
6
Needle stand of DC fan
7
Earthing wire terminal 

8
Fuse

9
Copper pin terminal of live 
wire 

2

10
Copper pin terminal of neutral 
wire

3

4

Sayfa 17

48K

● Top view

1
2
3
4
5

6

● Bottom view

14
Technical Information

Service Manual

1
Interface of live wire

2
Fuse

3
Interface of communication 
wire for outdoor unit  
4
Interface of netural wire 
5
Motor interface of indoor unit 

6
Interface of earthing wire

7
Connection needle stand of 
display board 
8
Left&right swing interface

9
Up&down swing interface

10 Needle stand of temperature 
sensor

10

8
7

9

Sayfa 18

Service Manual

Outdoor unit

24K

Top View

2
3
4
5
6
7
8
9
10

1

NO.
Name
NO.
Name
NO.
Name
1
Compressor three phase input interface
6
Terminal of high pressure protection
11
Terminal of chassis electric heating 

2
Terminal of low ambient temperature 
cooling temperature sensor
7
Terminal of low pressure protection
12 Terminal of  live wire

3
Terminal of electronic expansion valve 
8
Terminal of outdoor fan
13 Terminal of communication
4
Terminal of outdoor temperature sensor 
9
Terminal of compressor electric heating 14 Terminal of grounding wire

5
Terminal of compressor overload 
protection 
10
Terminal of 4-way valve
15 Terminal of neutral wire

Bottom View

15
Technical Information

11

12
13

14

15

Sayfa 19

48K

● Top view

1
2
3
4

9
10
11
12

● Bottom view

16
Technical Information

Service Manual

1
Compressor wiring terminal

2
Wiring terminal of PFC 
inductance
3
Neutral terminal 

4
Live wire terminal

5
4-way valve terminal

6
Terminal of communication 
wire

7
Terminal of communication 
neutral wire

8
Terminal for high pressure 
protection 

5

9
Terminal for low pressure 
protection

10
Terminal of temperature 
sensor

6
7

11
Terminal of electronic 
expansion valve
12
Terminal of fan

8

Sayfa 20

Service Manual

6. Function and Control
6.1 Function Buttons of Air Conditioner

Button’s Name and Function

1
ON/OFF button

2
MODE button

3
FAN button

5
4
FUNCTION button

3

ON/OFF
5
▼/▲ button

1

FAN

6
button
/

2

4

MODE

FUNC.

6

Introduction for icons on display screenof air conditioner

Ambient temperature 
or set temperature 
display or others

Timer 
display

Operation

display

E-Heater display

Cooling display

Defrosting display

Dry display

Heating display

Fan display

Fan speed display

Note:

This series unit adopts touch buttons. You only need to touch the buttons slightly. 

1

ON/OFF button

●  

Press this button to turn on or turn off the unit.(Note: Under X-FAN mode, press this button to turn on the unit directly.)
   

2

MODE button

●  Every time press this button, the mode will switchover in cycle among.  

COOLING
DRY

HEATING
FAN

(Note: Cooling only unit won’t accept heating operation signal. For cooling only unit, pressing MODE button under FAN mode will 
skip heating mode and enter cooling mode.) 

FAN button
3

●  Press this button and then fan speed can be selected and displayed in the 
    sequence as below: 

(low) 
(medium)
(high) 

(turbo)

    (Note:Only low fan speed is available for dry mode.  Fan speed can't be adjusted 
    under dry mode. Turbo cannot be set in FAN mode.)

FUNCTION button
4
●  

Under on status, press Function button to switch between timer and auxiliary heating function setting (auxiliary heating  
   can be set only in heating mode). When timer or auxiliary heating icon is blinking, it means this function can be set. Press  
    
    "▲" or "▼" button to set function. If there’s no operation change within 5s after setting is finished, the function setting will be 
    confirmed. Or press Function button  again to exit or confirm the function.When the function is selected through Function 
    
    button, if the unit is not turned off and no remote control signal is received within 2min, pressing Function button again to 
     circulate from the previous set function.After 2min or the unit is turned off or remote control signal is received, pressing  
    
    Function button again to circulate from timer icon. (Note: Only when the unit is under heating mode and with auxiliary heating  
    function, auxiliary heating function can be turned on or off through Function button.)
    
    Under off status, if the unit is in X-FAN status, press Function button to turn off the unit directly; if the unit is not in X-FAN status,
      press Function button to set timer ON. 

●  

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Sayfa 21

Button’s introduction

▼/▲ button
5
●  After each pressing of "▲" or "▼" button, set temperature will increase or decrease 

    1ć. Temperature adjustment range is 
ć~30 ć. This button is invalid under 

16

auto mode. Timer setting can be set in 1h increment among 0~24h. When it is adjusted to 
 auxiliary heating function setting through Function button,press this button to turn on or turn off auxiliary heating. (Note: auxiliary 

heating   is valid only for the model with this function.) 

●  Hold "▲" and "▼" buttons for 3s and the air conditioner will display "LC", which indicates buttons are locked. Any button  
    under on status or ON/OFF button and function buttons under off status are all invalid. Hold these two button for 3s  

    
    again to release the lock. 

button
6
●  Left and right swing: this button controls  the left and right swing motor, single pressit to switchover between ON and OFF.
    
●  Up and down swing: this button controls  the up and down swing motor, single pressit to switchover between ON and OFF.

/

Icon function introduction

Operation display

●It indicates the air conditioner is 
put through the power. Under on 

status, this indicator is on; under 
off status, this indicator is off. 

Timer display

ƽ When this indicator is on, it 

indicates the timer function 
is turned on. 

Heating display

●When this indicator is on, it 
indicates the heating mode is 
turned on. 

Fan speed display
Defrosting display

●When this indicator is on, it 
indicates the defrosting function 
is turned on. 

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Service Manual

Dry display

When this indicator is on, it indicates 
the dry mode is turned on. 

ƽ

E-Heater display

●

When this indicator is on, it indicates 
the E-heater function is turned on. 

Cooling display

●

When this indicator is on, it indicates 
the cooling mode is turned on. 

Fan display

●When this indicator is on, it indicates 
the fan mode is turned on.

●Displays the fan speed. The fan speed 
is displayed as below:

(low) →                       (medium) →                             

(high) →                                  (turbo)

Sayfa 22

Service Manual

6.2 Remote Control Operations

Buttons on remote controller

1
ON/OFF button

2
SAVE button

3
FAN button

4
MODE button

5
▲/     button

▲

HEAT button

6

7

COOL button

1

8

     button

2

     button
9

3

4

10

SLEEP button

5

11
WiFi button

12

X-FAN/E-HEATER button

7

6

13
QUIET button 

8

9

10

14
LIGHT button

13

11

14

15
TIMER button

12

15

Introduction for icons on display screen

Set fan speed
(No
fan speed. It’s displayed
only after turning it on.)
{

Operation mode

Send signal

battery power

Cool mode
Auto mode

 This is a general remote controller.Some 
 models have this function while some
 do not. Please refer to the actual models.
{

WiFi

Dry mode

Child lock

Fan mode

Switch temperature displaying type on
the unit’s display

Heat mode

I feel function

Up & down swing
Left & right swing

Set time

TIMER ON/TIMER OFF

Sleep mode

Turbo fan speed

Quiet mode

X-FAN function

Introduction for buttons on remote controller

This is a general use remote controller, it could be used for the air conditioners with multifunction; For some function, which the 
model doesn't have, if press the corresponding button on the remote controller that the unit will keep the original running status.

● After putting through the power, the air conditioner will give out a sound. 
   Operation indicator "     " is ON. 

After that, you can operate the air 
(This indicator is not available for some models).
conditioner by using remote controller. 

   
● Under on status, pressing the button on the remote controller, the signal icon "    "  on the display of remote controller will 
 blink once and the air conditioner will give out a “di” sound, which means the signal has been sent to the air conditioner.

19
Technical Information

Sayfa 23

ON/OFF button
1

Press this button can turn on or turn off the air conditioner. After turning on the air conditioner, indoor unit will give out a sound.

SAVE button
2

Under cooling mode, press this button to start up or turn off energy-saving function.When energy-saving function is started up,  
"SE" will be shown on remote controller, and air conditioner will adjust the set temperature automatically according to 
ex-factory setting to reach to the best energy-saving effect. Press this button again to exit energy-saving function.  

FAN button
3

Pressing this button can set fan speed circularly as: auto (AUTO), low(    ), medium (      ), high(         ), turbo(       ).

Auto

● Under AUTO speed, air conditioner will select proper fan speed automatically   according to ex-factory setting.
Note:

● It’s Low fan speed under Dry mode.
● Turbo cannot be set in FAN mode.

MODE button
4
Press this button to select your required operation mode.

AUTO
COOL
FAN
DRY
HEAT

● When selecting auto mode, air conditioner will operate automatically according to the sensed temperature. Set temperature 
 can’t be adjusted and will not be 
 
   displayed as well. Press "FAN" button can adjust fan speed. Press "     " / "    " button can adjust
 fan blowing angle.
● After selecting cool mode, air conditioner will operate under cool mode. Cool    indicator "     " on indoor unit is ON. 

(This indicator is not available for some models).

   
FAN" button to adjust fan speed. Press "     " / "    " button to adjust   fan blowing angle.
● When selecting dry mode, the air conditioner operates at low speed under dry    mode. Dry indicator "     " on indoor unit is ON. 

button to adjust set temperature. Press "

Press 

"▲" or "    " 

▲

(This indicator is not available for some models).

Under dry  mode, fan speed can’t   be adjusted. Press "     " / "    " button to adjust fan blowing angle.
● When selecting fan mode, the air conditioner will only blow fan, no cooling and 
   no heating. Fan indicator "     " on indoor unit is ON. 

(This indicator is not available for some models).

  Press "FAN" button to adjust fan speed. Press"     " / "    " button to adjust fan blowing angle.
● When selecting heating mode, the air conditioner operates under heat mode. 
   Heat indicator "      " on indoor unit is ON. 

(This indicator is not available for some models).

"▲" or "    " 
Press 
(Cooling only   

▲

   button to adjust set temperature. Press " FAN" button to adjust fan speed. Press "     " / "    " button to adjust fan blowing angle. 
 unit won’t receive heating mode signal. If setting heat mode with remote controller, press ON/OFF button can’t start up the  unit).  
   
  

Note:
● For preventing cold air, after starting up heating mode, indoor unit will delay 1~5   minutes to blow air (actual delay time is depend on indoor

 ambient temperature).

● Set temperature range from remote controller: 16~30ć (61-86°F); 
   Fan speed: auto, low speed, medium speed, high speed, turbo speed. 

▲/     button
5

▲

● Press "▲" or "    " button once increase or decrease set temperature 1ć (°F). 
   Holding "▲" or "    " button, 2s later, set temperature 
   on remote controller will  change quickly . On releasing button after setting is finished, temperature indicator
    on indoor unit will change 
accordingly. (Temperature can’t be adjusted under

▲
▲

   auto mode)

● When setting TIMER ON, TIMER OFF, press "▲" or "    " button to adjust time. 
   (Refer to TIMER button for details)

▲

Cool button
6

● Press this button, unit will operate in cool mode.

Heat button
7

● Press this button, unit will operate in heat mode.

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Sayfa 24

Service Manual

8
 button

● Under simple swing mode, press this button can turn on ("      " icon is displayed) or 
   turn off ("      " icon is not displayed) 

the left&right swing function.

● When the unit is turned off by remote controller, press "▲" button and "      "

   button can switch between single swing mode 
   "      " on the remote controller will flash twice.

and fixed-angle swing mode. 

   Under fixed-angle swing mode, press this button and then left&right swing status will    circulate as shown in the right figure: 

no display

● This remote controller is the general type remote controller. When remote controller receives the signal of     "      " , swing  
status is same as "      " ; when remote controller 
   receives "      " , swing status is same as left&right swing OFF. 

9

 button

● Under simple swing mode, press this button can turn on ("      " icon is displayed) 
   lor turn off ("      " icon is not displayed) the 

up&down swing function.

● When the unit is turned off by remote controller, press "▲" button and "     "   button can switch between single swing mode and 
   "      " on the remote controller will flash twice.    Under fixed-angle swing mode, press this button and 
   the up&down swing status will circulate as shown in the right figure: 

fixed-angle swing mode.  

no display
10 SLEEP button

Under COOL, or HEAT mode, press this button to start up sleep function. "     " icon is displayed on remote controller. Press this 

button again to cancel sleep function and "     " icon will disappear.After powered on, Sleep Off is defaulted. After the unit is 

turned off, the Sleep function is canceled.  

In this mode, set temperature will be adjusted with the change of time. Under Fan、DRY and Auto modes, this function is not 
available.

WiFi button
11

Press " WiFi " button to turn on or turn off WiFi function. When WiFi function is turned on, the " WiFi " icon will be displayed on 

remote controller; Under status  of remote controller off, press "MODE" and " WiFi " buttons simultaneously for 1s,WiFi module  

 will restore to factory default setting.

● This function is only available for some models.

12
Pressing this button in COOL or DRY mode, the icon "      " is displayed and the 

X-FAN/E-HEATER button

indoor fan will continue operation for a few 
minutes in order to dry the indoor unit even though you have turned off the unit. After energization, X-FAN OFF is defaulted.
 X-FAN is not available in AUTO, FAN or HEAT mode.This function indicates that moisture on evaporator of indoor unit will be 
blowed after the unit is stopped to avoid mould.  

   button indoor fan will continue running for 
   In this period, press X-FAN button to stop indoor fan directly.
●

●Having set X-FAN function on: After turning off the unit by pressing ON/OFF
about a few minutes. at low speed.

Having set X-FAN function off: After turning off the unit by pressing ON/OFF   button, the complete unit will be off directly.

●

Only under cooling mode and dry mode, press this button can turn on (characters 
(characters of “X-FAN” are not displayed) 

of “X-FAN” are displayed)  or turn off 
X-FAN function.

Under heating mode, press this button and the E-HEATER status will changed circularly as below: 
●

Auto E-HEATER (no display)

E-HEATER OFF 
(               is displayed)

E-HEATER ON
(          is displayed)

21
Technical Information

Sayfa 25

●This function is not available for this unit.
Press this button can turn on or turn off QUIET function. 
13
QUIET button

LIGHT button
14
Press this button to turn off display light on indoor unit. Press this button again to turn on display light. 

TIMER button
15

● At ON status, press this button once can set TIMER OFF. The character of HOUR
TIMER    ON. After each pressing of "    " or "    " button, time will increase or
 decrease half an 

   hour. When holding "    " or "    " button, 2s later, the time will change quickly until to 

▲

▲

   Cancel TIMER OFF: Press "TIMER" button again under TIMER OFF status.

● At OFF status, press this button once can set TIMER ON. Please refer to TIMER    off for detailed operation. 
   Cancel TIMER ON: Press "TIMER" button again under TIMER ON status.

Note:
● Time setting range: 0.5-24 hours.
● Time interval between two operations can’t exceed 5s. Otherwise, remote 
   controller will exit the setting status automatically.

Function introduction for combination buttons

Child lock function

Press "▲" and "    " simultaneously to turn on or turn off child lock function. When
 on remote controller. If you operate the remote controller, the "    " icon will blink three times without sending signal to the unit.

▲

Temperature display switchover function

Under OFF status, press "    " and "MODE" buttons simultaneously to switch temperature display between ć and ̧
.

▲

If “H1” is displayed on the remote controller while it’s not operated by the professional person/after-sales person, it belongs to the misoperation. 
Please operate it as below to cancel it.Under the OFF status of remote controller, hold the “MODE” button  and “X-FAN” buttons simultaneously 
for 5s to cancel “H1” display.
Note:
● If remote controller displays “H1”, it belongs to the normal function reminder. If the unit is defrosting under heating mode, it operates accord-
ing to H1 defrosting mode. “H1” won’t be displayed on the panel of indoor unit;
● Once you set H1 mode, if you turn off unit by remote controller, H1 will display 3 times on the remote controller and then disappear;
● Also, when you set  H1 mode, when you change to heating mode, H1 will display 3 times on the remote controller and then disappear.

Operation guide

1. After putting through the power, press "ON/OFF" button on remote controller to
    turn on the air conditioner.
2. Press "MODE" button to select your required mode: AUTO, COOL, DRY, FAN,  
    HEAT.
3. Press "▲" or "    " button to set your required temperature. (Temperature can’t     be adjusted under auto mode).
4. Press "FAN" button to set your required fan speed: auto, low speed, medium 
    speed, high speed, turbo speed. 

▲

5. Press "     " button to select fan blowing angle.

Replacement of batteries in remote controller

 1. Lift the cover along the direction of arrow (as shown in Fig 1 ǐ).
 
 2. Take out the original batteries (as shown in Fig 1 Ǒ).
 

3. Place two 7# (AAA 1.5V) dry batteries, and make sure the position of “+” 
polar and “-” polar is correct (as shown in Fig 2ǒ).
 
 4. Reinstall the cover (as shown in Fig 2 Ǔ).

NOTICE

● During operation, point the remote control signal sender at the receiving 
   window on indoor unit.
● The distance between signal sender and receiving window should be no 
   more than 8m, and there should be no obstacles between them.
● Signal may be interfered easily in the room where there is fluorescent lamp 
   or wireless telephone; remote controller should be close to indoor unit during 
   operation.
● Replace new batteries of the same model when replacement is required.
● When you don’t use remote controller for a long time, please take out the 
   batteries.

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Service Manual

▲

▲

▲

▲

child lock function is on, "    " icon is displayed 

Fig.1
Fig.2 

Sayfa 26

Service Manual

6.3 Description of Each Control Operation

Note:Heating function is not available for this model.

1.Basic Functions
1.1 Cooling Mode

When Tamb.≥Tpreset+1ć, the unit will run in cooling mode. Meanwhile, compressor and outdoor fan will run. Indoor fan will 
run at setting fan speed; 
When Tamb.≤Tpreset-1ć, the unit will stop running in cooling mode. Compressor and outdoor fan will stop running, while 
indoor fan is still running at setting fan speed; 
When Tpreset-1ć<Tamb.<Tpreset+1ć, the unit will keep previous running status; 
1.2 Dry Mode
When Tamb>Tpreset+2ćˈthe unit will run at cooling mode. Meanwhile, compressor and outdoor fan will run. Indoor fan will 
run at low fan speed. 
When Tpreset-2ć≤Tamb. ≤Tpreset+2ć, compressor and outdoor fan will run for 6mins and then stop running for 4mins and 
they will run like that circularly. Indoor fan will run at low fan speed; 
When Tamb.<Tpreset-2ć, compressor and outdoor fan will stop running. Indoor fan will run at low fan speed. 

1.3 Heating Mode

When Tamb≤Tpreset-1ć, the unit will run in heating mode and the corresponding load will start running. Indoor fan will run at 
the condition of anti cold wind. 
When Tamb.≥Tpreset+1ć, the corresponding load will be stopped. Indoor fan will run at setting fan speed and the condition of 
blowing residual heat. 
When Tpreset<Tamb<Tpreset+1ć, the unit will keep previous running status. 

1.4 Fan Mode

Indoor fan will run at setting fan speed. Compressor, outdoor fan and reversing valve will stop running. 

1.5 Auto Mode

In this mode, the unit will decide its running mode according to the ambient temperature. 
When Tamb>26ć, the unit will run in cooling mode. Internal setting temperature is 26ć; 
When 20ć≤Tamb. ≤26ć, the unit will run in dry mode. Internal setting temperature is 24ć; 
When Tamb.<20ć, the unit will run in heating mode. Internal setting temperature is 20ć. When Tamb.≥24ć, the unit will quit 
from the heating mode. As for the cooling only unit, when Tamb.<20ć, the unit will run at fan mode and the internal setting 
temperature is 20ć. When Tamb≥24ć, the unit will quit from the fan mode. 
2. Protection Function

2.1 Indoor Antifreezing Protection

When antifreezing protection is detected, the corresponding load will be stopped. After the antifreezing protection is released, 
controller will run at setting mode. Buttons won’t be shielded during the antifreezing protection. 

2.2 High Pressure Protection of System

When high pressure protection is detected, the corresponding load will be stopped. All button and remote control signal will be 
shielded and E1 will be displayed; after high pressure protection of compressor is released, all buttons and remote control 
signal will become normal. 

2.3 Low Pressure Protection of System

When low pressure protection is detected for the first time, the corresponding load will be stopped and the indicator will blink. If 
the low pressure protection is detected for twice successively, the corresponding load will be stopped and E3 will be displayed. 
They can’t resume automatically. 

2.4 High Temperature Protectionfor Discharge Pipe

When high temperature protection for discharge pipe is detected, the corresponding load will be stopped. E4 will be displayed.

2.5 Indoor High Temperature Resistant Protection

When high temperature resistant protection is detected, the corresponding load will be stopped. 

2.6 Overcurrent Protection

When overcurrent protection is detected, the corresponding load will be stopped and E5 will be displayed. 
3. Other Function 

3.1 Defrosting

The unit will judge according to the tube temperature and ambient temperature, when it’s detected that the outdoor condenser 
is frosting, the unit will start defrosting. Indoor fan and four-way valve will stop running. After defrosting is finished, the unit will 
start heating normally. During the time of defrosting,Defrosting indicator is on. 
3.2 Swing Function 

Users can start up or stop the function of up&down swing, right&left swing. 

23
Technical Information

Sayfa 27

3.3 Sleep
ķ If the controller is in cooling or dry mode, after the sleep function is started, Tpreset will be increased but it won’t increase 
over 3ć. Then the unit will run at the increased temperature.  
ĸ If the controller is in heating mode, after the sleep function is started, Tpreset will be decreased and it won’t decrease over 
3ć. Then the unit will run at the decreased temperature. 

3.4 Timer

Timer ON and timer OFF can be set by remote controller or buttons and the setting range is 0.5~24hrs. 

3.5 Buzzer

Upon energization and operation, the buzzer will give out a beef. 

3.6 Power-off Memory Function

Memory content: mode, up&dwon swing (7 statuses), right&left swing (ON/OFF), setting temperature, setting fan speed, health,
light, timer. After power failure, the unit will run according to the memory content automatically when power recovered. If 
energize the unit after power failure and the unit is turned on before power failure, the compressor will be delayed for 3mins for 
protection; if the unit is turned off before power failure, the compressor won’t be delayed for 3mins for protection. If the timer is 
reached before power failure, the unit will run according to the mode before power failure after power recovered; if the timer 
isn’t reached, the timer will be continued and time will be recalculated. 

3.7 LED Display Module Control

1. Indicator control 

2. Use the light button on r
Indicator will be displayed according to current operation function. 

emote controller to turn off the LED display: When cancel the “light” by remote controller, the 
complete display screen will go out except the running indicator. 

3.8 Buttons

ķ ON/OFF button: This button is used for control the on/off of controller. After each pressing of this button, the on/off status 
will be changes for once. 
ĸ Mode button: After pressing the mode button, it will be selected and display as: auto—cooling—drying—fan—heating (not 
available for cooling only unit). 
Ĺ +and – buttons: This two buttons are used for adjusting temperature and timer; 
ĺ Up&down button: This button is used for control the up&down swing motor and it will be selected and displayed as: angle 
1→angle 2→angle 3 →angle 4→angle 5→to-and-fro swing →stop swing. 
Ļ Fan speed button: fan speed will be selected as: auto—low—medium—high—super-high; 
ļ Right&left swing button: This button is used for control the on/off of right&left swing motor. After each pressing this button, 
the on/off status of the right&left swing motor will be changed for once. 

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Technical Information

Service Manual

Sayfa 28

Service Manual

6.4 GREE+ App Operation Manual

Control Flow Chart

Home Wi-Fi
Gree

intelligent

home
appliances

Home wireless router

Operating Systems

Requirement for User's smart phone:

iOS system
Support iOS7.0 and 
above version 

Download and installation

GREE+ App Download Linkage 

Scan the QR code or search "GREE+" in the application market to download and install it. When "GREE+" App is installed, register the 
account and add the device to achieve long-distance control and LAN control of Gree smart home appliances. 
For more information, please refer to "Help" in App.

25
Technical Information

Internet

Gree Cloud

Cellular/
Other Wi-FI

Home Wi-Fi

GREE+ APP

Android system
Support Android 4.4 and 
above version

Sayfa 29

6.5 Ewpe Smart App Operation Manual

Control Flow Chart

intelligent

Home Wi-Fi

home
appliances

Home wireless router

Operating Systems

Requirement for User's smart phone:

iOS system
Support iOS7.0 and 
above version 

Download and installation

App Download Linkage 

Scan the QR code or search "Ewpe Smart" in the application market to download and install it. When "Ewpe Smart" App is installed, 
register the account and add the device to achieve long-distance control and LAN control of smart home appliances. 
For more information, please refer to "Help" in App.

26
Technical Information

Service Manual

Internet

Cloud

Cellular/
Other Wi-FI

Home Wi-Fi

APP

Android system
Support Android 4.4 and 
above version

Sayfa 30

Service Manual

Part Ⅱ: Installation and Maintenance 

7. Notes for Installation and Maintenance

Safety Precautions: 
Important!

Please read the safety precautions carefully before 
installation and maintenance.
The following contents are very important for installation 
and maintenance.

Please follow the instructions below.

●The installation or maintenance must accord with the 
instructions.
●Comply with all national electrical codes and local 
electrical codes.
●Pay attention to the warnings and cautions in this 
manual.
●All electric work must be performed by a licensed 
technician according to local regulations and the 
instructions given in this manual.
●Be caution during installation and maintenance. Prohibit 
incorrect operation to prevent electric shock, casualty and 
other accidents. 

1. Select the installation location according to the requirement 
of this manual.(See the requirements in installation part)
2. Handle unit transportation with care; the unit should not be 
carried by only one person if it is more than 20kg.
3. When installing the indoor unit and outdoor unit, a sufficient 
fixing bolt must be installed; make sure the installation support 
is firm.
4. Ware safety belt if the height of working is above 2m.
5. Use equipped components or appointed components during 
installation.
6. Make sure no foreign objects are left in the unit after finishing 
installation.
Electrical Safety Precautions:

Warnings

1. Cut off the power supply of air conditioner before 
checking and maintenance.
2. The air condition must apply specialized circuit and 
prohibit share the same circuit with other appliances.
3. The air conditioner should be installed in suitable 
location and ensure the power plug is touchable.
4. Make sure each wiring terminal is connected firmly 
during installation and maintenance.
5. Have the unit adequately grounded. The grounding 
wire can’t be used for other purposes.
6. Must apply protective accessories such as protective 
boards, cable-cross loop and wire clip.
7. The live wire, neutral wire and grounding wire of 
power supply must be corresponding to the live wire, 
neutral wire and grounding wire of the air conditioner.  
8. The power cord and power connection wires can’t be 
pressed by hard objects.

9. If power cord or connection wire is broken, it must be 
replaced .

27
Installation and Maintenance

10. If the power cord or connection wire is not long enough, 
please get the specialized power cord or connection wire from 
the manufacture or distributor. Prohibit prolong the wire by 
yourself.

11. For the air conditioner without plug, an air switch must be 
installed in the circuit. The air switch should be all-pole parting 
and the contact parting distance should be more than 3mm.
12. Make sure all wires and pipes are connected properly and 
the valves are opened before energizing.
13. Check if there is electric leakage on the unit body. If yes, 
please eliminate the electric leakage.
14. Replace the fuse with a new one of the same specification 
if it is burnt down; don’t replace it with a cooper wire or 
conducting wire.
15. If the unit is to be installed in a humid place, the circuit 
breaker must be installed.

Installation Safety Precautions:

When refrigerant leaks or requires discharge during installation, 
maintenance, or disassembly, it should be handled by certified 
professionals or otherwise in compliance with local laws and 
regulations.

Refrigerant Safety Precautions:

1. Avoid contact between refrigerant and fire as it generates 
poisonous gas; Prohibit prolong the connection pipe by 
welding.
2. Apply specified refrigerant only. Never have it mixed with any 
other refrigerant. Never have air remain in the refrigerant line as 
it may lead to rupture or other hazards.
3. Make sure no refrigerant gas is leaking out when installation 
is completed.
4. If there is refrigerant leakage, please take sufficient measure 
to minimize the density of refrigerant.
5. Never touch the refrigerant piping or compressor without 
wearing glove to avoid scald or frostbite.

Improper installation may lead to fire hazard, 
explosion, electric shock or injury.

Sayfa 31

To ensure safety, please be mindful of the following 
precautions.

●When installing or relocating the unit, be sure to keep the 

refrigerant circuit free from air or substances other than the specified 

refrigerant.

Any presence of air or other foreign substance in the refrigerant 

circuit will cause system pressure rise or compressor rupture, 

resulting in injury.

●When installing or moving this unit, do not charge the refrigerant 

which is not comply with that on the nameplate or unqualified 

refrigerant.Otherwise, it may cause abnormal operation, wrong 

action, mechanical malfunction or even series safety accident.

●When refrigerant needs to be recovered during relocating or 

repairing the unit, be sure that the unit is running in cooling mode.

Then, fully close the valve at high pressure side (liquid valve).About 

30-40 seconds later, fully close the valve at low pressure side (gas 

valve), immediately stop the unit and disconnect power. Please note 

that the time for refrigerant recovery should not exceed 1 minute.

If refrigerant recovery takes too much time, air may be sucked in and 

cause pressure rise or compressor rupture, resulting in injury.

●During refrigerant recovery, make sure that liquid valve and gas 

valve are fully closed and power is disconnected before detaching 

the connection pipe.

If compressor starts running when stop valve is open and connection 

pipe is not yet connected, air will be sucked in and cause pressure 

rise or compressor rupture, resulting in injury.

●When installing the unit, make sure that connection pipe is securely

connected before the compressor starts running.

If compressor starts running when stop valve is open and connection 

pipe is not yet connected, air will be sucked in and cause pressure 

rise or compressor rupture, resulting in injury.

●Prohibit installing the unit at the place where there may be leaked 

corrosive gas or flammable gas.

If there leaked gas around the unit, it may cause explosion and other 

accidents.

●Do not use extension cords for electrical connections. If the electric 

wire is not long enough, please contact a local service center 

authorized and ask for a proper electric wire.

Poor connections may lead to electric shock or fire.

●Use the specified types of wires for electrical connections between 

the indoor and outdoor units. Firmly clamp the wires so that their 

terminals receive no external stresses.

Electric wires with insufficient capacity, wrong wire connections and 

insecure wire terminals may cause electric shock or fire.

28
Installation and Maintenance

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Service Manual

Safety Precautions for Installing and Relocating the Unit:

To ensure safety, please be mindful of the following precautions. 

Warnings

1. When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the 
specified refrigerant.
Any presence of air or other foreign substance in the refrigerant circuit will cause system pressure rise or compressor rupture, resulting in 
injury.
2.When installing or moving this unit, do not charge the refrigerant which is not comply with that on the nameplate or 
unqualified refrigerant.
Otherwise, it may cause abnormal operation, wrong action, mechanical malfunction or even series safety accident.
3.When refrigerant needs to be recovered during relocating or repairing the unit, be sure that the unit is running in cooling 
mode.Then, fully close the valve at high pressure side (liquid valve).About 30-40 seconds later, fully close the valve at low 
pressure side (gas valve), immediately stop the unit and disconnect power. Please note that the time for refrigerant recovery 
should  not exceed 1 minute. 
If refrigerant recovery takes too much time, air may be sucked in and cause pressure rise or compressor rupture, resulting in injury. 
4.During refrigerant recovery, make sure that liquid valve and gas valve are fully closed and power is disconnected before 
detaching the connection pipe. 
If compressor starts running when stop valve is open and connection pipe is not yet connected, air will be sucked in and cause pressure 
rise or compressor rupture, resulting in injury.
5.When installing the unit, make sure that connection pipe is securely connected before the compressor starts running.
If compressor starts running when stop valve is open and connection pipe is not yet connected, air will be sucked in and cause pressure 
rise or compressor rupture, resulting in injury.
6.Prohibit installing the unit at the place where there may be leaked corrosive gas or flammable gas.
If there leaked gas around the unit, it may cause explosion and other accidents.
7.Do not use extension cords for electrical connections. If the electric wire is not long enough, please contact a local service 
center authorized  and ask for a proper electric wire.
Poor connections may lead to electric shock or fire.
8.Use the specified types of wires for electrical connections between the indoor and outdoor units. Firmly clamp the wires so 
that their terminals receive no external stresses.
Electric wires with insufficient capacity, wrong wire connections and insecure wire terminals may cause electric shock or fire.

Safety Precautions for Refrigerant

●To realize the function of the air conditioner unit, a special refrigerant circulates in the system. The used refrigerant is the 
fluoride R32,which is specially cleaned. The refrigerant is flammable and inodorous. Furthermore, it can leads to explosion 
under certain conditions. But the flammability of the refrigerant is very low. It can be ignited only by fire.
●Compared to common refrigerants, R32 is a nonpolluting refrigerant with no harm to the ozonosphere. The influence upon 
the greenhouse effect is also lower. R32 has got very good thermodynamic features which lead to a really high energy 
efficiency. The units therefore need a less filling.

WARNING:
●Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacture.
Should repair be necessary,contact your nearest authorized Service Centre. Any repairs carried out by unqualified 
personnel may be dangerous. The appliance shall be stored in a room without continuously operating ignition sources. (for 
example:open flames , an operating gas appliance or an operating electric heater.)
●Do not pierce or burn.
●Appliance shall be installed, operated and stored in a room with a floor area larger than 4m
2 (or 6m
2 ).
●Appliance filled with flammable gas R32. For repairs, strictly follow manufacturer’s instructions only.Be aware that 
refrigrants not contain odour.
●Read specialist’s manual.

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Installation and Maintenance

Sayfa 33

Safety Operation of Flammable Refrigerant

Qualification requirement for installation and maintenance man

●All the work men who are engaging in the refrigeration system should bear the valid certification awarded by the 
authoritative organization and the qualification for dealing with the refrigeration system recognized by this industry. If it needs 
other technician to maintain and repair the appliance, they should be supervised by the person who bears the qualification for 
using the flammable refrigerant.
●It can only be repaired by the method suggested by the equipment’s manufacturer.

Installation notes

●The air conditioner is not allowed to use in a room that has running fire (such as fire source,working coal gas ware, 
operating heater).
●It is not allowed to drill hole or burn the connection pipe.
●The air conditioner must be installed in a room that is larger than the minimum room area.
The minimum room area is shown on the nameplate or following table a.
●Leak test is a must after installation.
table a - Minimum room area(m

2)

Charge amount (kg) ≤1.2 1.3 1.4
1.5
1.6
1.7
1.8
1.9
2
2.1
2.2
2.3
2.4
2.5

4
14.5 16.8 19.3 22 24.8 27.8 31 34.3 37.8 41.5 45.4 49.4 53.6

floor location

Minimum

room

window mounted

4

5.2 6.1
7
7.9
8.9
10 11.2 12.4 13.6
15
16.3 17.8 19.3

2
area( m  )

4
4
4

4
4
4
4
4

wall mounted

4

4.2
4.6
5
5.5
6

4
4
4
4
4

ceiling mounted

4

4
4
4

4
4
4
4
4

Maintenance notes

●Check whether the maintenance area or the room area meet the requirement of the nameplate.
— It’s only allowed to be operated in the rooms that meet the requirement of the nameplate.
●Check whether the maintenance area is well-ventilated.
— The continuous ventilation status should be kept during the operation process.
●Check whether there is fire source or potential fire source in the maintenance area.
— The naked flame is prohibited in the maintenance area; and the “no smoking” warning board should be hanged.
●Check whether the appliance mark is in good condition.
— Replace the vague or damaged warning mark.

Welding

●If you should cut or weld the refrigerant system pipes in the process of maintaining, please follow the steps as below:
a. Shut down the unit and cut power supply
b. Eliminate the refrigerant
c. Vacuuming
d. Clean it with N2 gas
e. Cutting or welding
f. Carry back to the service spot for welding
●Make sure that there isn’t any naked flame near the outlet of the vacuum pump and it’s well-ventilated.
●The refrigerant should be recycled into the specialized storage tank.

Filling the refrigerant

●Use the refrigerant filling appliances specialized for R32. Make sure that different kinds of refrigerant won’t contaminate with 
each other.
●The refrigerant tank should be kept upright at the time of filling refrigerant.
●Stick the label on the system after filling is finished (or haven’t finished).
●Don’t overfilling.
●After filling is finished, please do the leakage detection before test running; another time of leak detection should be done 
when it’s removed.

Safety instructions for transportation and storage

●Please use the flammable gas detector to check before unload and open the container.
●No fire source and smoking.
●According to the local rules and laws.

30
Installation and Maintenance

Service Manual

Sayfa 34

Service Manual

Main Tools for Installation and Maintenance

1. Measuring tape

4. Electroprobe

7. Electronic leakage detector

10. Pipe pliers, pipe cutter

31
Installation and Maintenance

2. Screw driver

3. Impact drill, drill head, electric drill



5. Universal meter

6. Torque wrench, open-end wrench, inner 
hexagon spanner

8. Vacuum pump

9. Pressure meter

11. Pipe expander, pipe bender

12. Soldering appliance, refrigerant container

13. Electronic scale

Sayfa 35

8. Installation

8.1 Installation Dimension Diagram

GVH24AM-K6DNC7A

Away from wall (30cm
at least for piping side)

Away from 

10cm above

ceiling

30cm

200cm above

Away from obstacles

Away from wall (30cm at

10cm above

least for piping side)

Away from back side

5cm above

Space to the obstruction

At least 19 2/3 inch

Space to the obstruction

At least 11 4/5 inch

Space to the wall

At least 11 4/5 inch

Drainage pipe

Space to the obstructio

At least 78 3/5 inch

Space to the obstruction

At least 19 2/3 inch

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Installation and Maintenance

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Service Manual

GVH48AL-K6DNC7A

Away from wall (30cm
at least for piping side)

ceiling
Away from 

10cm above

30cm

200cm above

Away from obstacles

FAN

ON/OFF

FUNC.

MODE

Away from wall (30cm at
least for piping side)

10cm above

from back side
Away 

5cm above

Away from obstacled

Away from obstacles

50cm above

30cm above

Away from wall

30cm above

Away from obstacles

Away from obstacles

50cm above

200cm above

33
Installation and Maintenance

Sayfa 37

Installation procedures

 Start installation

Preparation before installation

Prepare tools
Read the requirements 
for electric connection

select installation 
location

Select indoor unit 
installation location

Select outdoor unit 
installation location

Install the support of outdoor unit
(select it according to the actual situation)

Drill wall holes

Connect pipes of indoor 
unit and drainage pipe

Fix outdoor unit

Install drainage joint of outdoor unit 
(only for cooling and heating unit)

Connect wires of indoor unit

Bind up pipes 

Connect pipes of outdoor unit

Make the bound pipes pass 
through the wall hole and then
 connect outdoor unit

Connect wires of outdoor unit

Neaten the pipes

Vacuum pumping and leakage detection

Check after installation and test operation

Finish installation

Note: this flow is only for reference; please find the more detailed installation steps in this section.

34
Installation and Maintenance

Service Manual

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Service Manual

8.2 Installation Parts-checking 

No.
Name
No.
Name
1
Indoor unit
7
Sealing gum
2
Outdoor unit
8
Wrapping tape

3
Connection pipe
9
Support of outdoor 
unit
4
Drainage pipe
10
Fixing screw

5
Connecting 
cable(power cord)
11
Drainage plug(cooling 
and heating unit)

6
Wall pipe
12
Owner’s manual, 
remote controller

Note:

1.Please contact the local agent for installation.
2.Don't use unqualified power cord.

8.3 Selection of Installation Location

Basic Requirement:
Installing the unit in the following places may cause 
malfunction. If it is unavoidable, please consult the local dealer:
1.The place with strong heat sources, vapors, flammable or 
explosive gas, or volatile objects spread in the air.
2.The place with high-frequency devices (such as welding 
machine, medical equipment).
3.The place near coast area.
4.The place with oil or fumes in the air. 
5.The place with sulfureted gas.
6.Other places with special circumstances.
7. Please try your best to keep way from fluorescent lamp.
8.It’s not allowed to be installed on the unstable or motive base 
structure (such as truck) or in the corrosive environment
(such as chemical factory).

Indoor Unit:
1. Avoid installing the indoor unit in a place where generated or 
leaked inflammable gas will stay.
2. Avoid installing the indoor unit in a moist place or in a place 
where oil may be splashed on the unit.
3. Select a location where outlet air may reach each corner of 
the room.
4. Select a location where connection pipe can be led to 
outdoor conveniently.
5. Select a location where air inlet and outlet won't be blocked.
6. Select a location with least affection of outdoor air.
7. Select a location with firm and flat floor.
8. Retain sufficient space for maintenance and installation.
9. Ensure the installation meets the requirement of installation 
dimension diagram.
10.Do not use the unit in the immediate surroundings of a 
laundry a bath a shower or a swimming pool.

Outdoor Unit:
1. Select a location where the noise and outflow air emitted by 
the outdoor unit will not affect neighborhood.
2. The location should be well ventilated and dry, in which the 
outdoor unit won't be exposed directly to sunlight or strong 
wind. 
3. The location should be able to withstand the weight of 
outdoor unit.
4. Make sure that the installation follows the requirement of 
installation dimension diagram.
5. Select a location which is out of reach for children and far 
away from animals or plants. If it is unavoidable, please add 
fence for safety purpose.
6. The height difference between indoor unit and outdoor unit 
should be within 5m. The length of connection pipe should be 
within 10m.  

35
Installation and Maintenance

8.4 Requirements for electric connection 

        Safety Precaution:

1.Must follow the electric safety regulations when installing the unit.
2.If the supply cord is damaged, it must be replaced by the 
manufacturer or its
service agent or a similarly qualified person in order to avoid a 
hazard.
3.According to the local safety regulations, use qualified power 
supply circuit and air switch
4.A air switch having a contact separation of at least 3mm in all 
poles should be fixed in fixed wiring.
5.The appliance shall be installed in accordance with national wiring 
regulation.
6.The air switch must have the functions of magnetic tripping and 
heat tripping in order to prevent short circuit or overload. Please 
install the air switch with suitable capacity according to the sheet 
below.
7.Make sure the power supply matches with the requirement of air 
conditioner.Unstable power supply or incorrect wiring may result 
in electric shock, fire hazard or malfunction. Please install proper 
power supply cables before using the air conditioner.
8.Properly connect the live wire, neutral wire and grounding wire of 
power socket.
9.Be sure to cut off the power supply before proceeding any work 
related to electric safety.
10.Do not put through the power before finishing installation.
11.To be in compliance with IEC/EN 61000-3-11, impedance value 
of power-supply system connected to product must be less than 
or equal to the allowable maximum value of |Zsys| in the following 
sheet:

Model
max |Zsys| unit:ohm
GVH48AL-K6DNC7A
0.356

   Grounding Requirement:
1. The air conditioner is first class electric appliance. It must 
be properly grounded with specialized grounding device by a 
professional. Please make sure it is always grounded effectively, 
otherwise it may cause electric shock. 
2. The yellow-green wire in air conditioner is grounding wire, which 
can't be used for other purposes. 
3. The grounding resistance should comply with national electric 
safety regulations. 

Model
Capacity of air switch
Power cord specifications
24K
25A
4G0.75
48K
32A
4G0.75

8.5 Installation of Indoor Unit

Step one: choosing installation Iocation
Recommend the installation location to the client and then 
confirm it with the client.

Step two: open piping hole
1.Choose the position of piping hole according to the direction of 
outlet pipe. 
2.Open a piping hole with the diameter of Φ70mm on the selected 
outlet pipe position. In order to drain smoothly, slant the piping hole 
on the wall slightly downward to the outdoor side with the gradient 
of 5-10°. (As show in Fig.1)

Indoor

Outdoor

Model
Piping hole
24K
Φ70mm

Fig.1

Φ70mm

5-10°

Sayfa 39

Service Manual

Note:

1.Pay attention to dust prevention and take relevant 
safety measures when opening the
hole.
2.The plastic expansion particles are not provided and 
should be bought locally.

Refer to the following table for wrench moment of force:

.

Hex nut diameter(mm)
Tightening torque(N m)
Φ6.35(1/4")
15.7(1.6kg.m)
Φ9.52(3/8")
29.4(3.0kg.m)
Φ12.70(1/2")
49.0(5.0kg.m)
Φ15.88(5/8")
73.6(7.5kg.m)

Step three: outlet pipe
1. The pipe can be led out in the direction of left, right or rear. 

(As show in Fig.2)

2. After confirming the direction of outlet pipe, loosen the 

Step five: install drain hose
1. Connect the drain hose to the outlet pipe of indoor unit.(As 

screws at the upper and lower adjusting baffle to let the 

connection pipe/drain pipe connects the indoor unit. (As show 

show in Fig.8)

in Fig.3)

2. Bind the joint with tape.(As show in Fig.8)

3. Add insulating pipe in the indoor drain hose in order to 

prevent condensation.(As show in Fig.10)

drain hose

outlet pipe

left
back
right

Fig.2

left
back
right

drain hose

tape

outlet pipe

Fig.9

Fig.8

drain hose

Fig.3

upper and lower adjusting baffle

insulating pipe

Step four: connect the pipe of indoor unit
1. Take out the left and right screw cover and then remove 

Fig.10

the screws on air-inlet panel to remove the panel.(As show in 

Step six: connect wire of indoor unit
1. Make the power connection wire go through the cable-

Fig.4)

2. Aim the pipe joint at the corresponding bellmouth.(As show 

cross hole of indoor unit(As show in Fig.11)

in Fig.5)

3. Pretightening the union nut with hand.

4. Adjust the torque force by referring to the following sheet. 

Place the open-end wrench on the pipe joint and place the 

power 
connection 
wire

cable-cross 
hole

torque wrench on the union nut. Tighten the union nut with 

torque wrench.(As show in Fig.6) 

5. Wrap the indoor pipe and joint of connection pipe with 

Fig.11

insulating pipe, and then wrap it with tape. (As show in Fig.7)

2. Remove the wire clip; connect the power connection wire 

screw

to the wiring terminal according to the color; tighten the screw 

and then fix the power supply wire,power connection wire with 

union nut
pipe joint
pipe

wire clip.(As show in Fig.12)

air-inlet 
panel

Fig.12

Fig.4

Fig.5

3

N(1)
2

open-end wrench

blue
black
yellow-
green

brown

union nut

pipe

torque wrench

insulating pipe

indoor pipe

Outdoor unit connection

Fig.6

Fig.7

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Installation and Maintenance

Sayfa 40

Service Manual

3. Adjust the position of upper and lower adjusting baffle; 

clamp the connection pipe and drain pipe as firm as 

possible.

4. Tighten the screws.

Note: 

All wires of indoor unit and outdoor unit should be connected 

by a professional. 

1.If the length of power connection wire is insufficient, please 

contact the supplier for a new one. Avoid extending the wire 

by yourself.  

2.For the air conditioner with plug, the plug should be 

reachable after finishing installation.

3.For the air conditioner without plug, an air switch must be 

installed in the line. The air switch should be all-pole parting 

and the contact parting distance should be more than 3mm.   

Step seven: bind up pipe
1. Bind up the connection pipe, power cord and drain hose with 

the band.(As show in Fig.13)

2.Reserve a certain length of drain hose and power cord for 

installation when binding them. When binding to a certain 

degree, separate the indoor power and then separate the drain 

hose.(As show in Fig.14)

3. Bind them evenly.

4. The liquid pipe and gas pipe should be bound separately at 

the end.

indoor and outdoor power cord

indoor unit

gas pipe

liquid pipe

drain hose
band

Fig.13

drain hose
band
connection pipe

indoor power cord

Fig.14

Note: 

1.The power cord and control wire can't be crossed or winding.

2.The drain hose should be bound at the bottom.

37
Installation and Maintenance

Step Eight: place the indoor unit
1.Put the bound pipes in the wall pipe and then make them 

pass through the wall hole.

2. Stuff the gap between pipes and wall hole with sealing gum.

(As show in Fig.15)

3. Fix the wall pipe.

4.Check if the indoor unit is installed firmly.

indoor
outdoor

wall pipe

sealing gum

Fig.15

Note:

Do not bend the drain hose too excessively in order to 

prevent blocking.

8.6 Installation of Outdoor Unit

Step one: fix the support of outdoor unit (select it 
according to the actual installation situation)

1. Select installation location according to the house structure.

2. Fix the support of outdoor unit on the selected location with 

expansion screws.

Note:

1.Take sufficient protective measures when installing the 

outdoor unit.

2.Make sure the support can withstand at least four times the 

unit weight. 

3.The outdoor unit should be installed at least 3cm above the 

floor in order to install drain joint.(As show in Fig.16)

4.For the unit with cooling capacity of  2300W~5000W, 

6 expansion screws are needed; for the unit with cooling 

capacity of 6000W~8000W, 8 expansion screws are needed; 

for the unit with cooling capacity of 10000W~16000W, 10 

expansion screws are needed.

At least 3cm above the floor

Fig.16

Sayfa 41

Service Manual

Handle

Step two: install drain joint (only for cooling and heating 
unit)
1. Connect the outdoor drain joint into the hole on the chassis, 

24K

N(1)
2
3
L

N

as shown in the picture below.

(black)
yellow-
green

blue black brown brown blue

yellow-
green

2. Connect the drain hose into the drain vent.(As show in 

L
N

Fig.17)

POWER

Indoor unit connection

NOTE: As for the shape of drainage joint,please refer to 

48K

：

the current product.Do not install the drainage joint in the 

N(1)
2
3

N
L

severe cold area. Otherwise,it will be frosted and then cause 

blue
brown
black
yellow-
green

blue
yellow-
green
（black）

brown

malfunction

L
N

POWER

Indoor unit connection

Fig.21

2. Fix the power connection wire with wire clip (only for cooling 

and heating unit).

drain vent

chassis

Note: 

outdoor drain joint
drain hose

Fig.17

1.After tightening the screw, pull the power cord slightly to 
check if it is firm. 
2. Never cut the power connection wire to prolong or shorten 
the distance.

Step three: fix outdoor unit
1. Place the outdoor unit on the support.

2. Fix the foot holes of outdoor unit with bolts.(As show in 

Step six: neaten the pipes
1. The pipes should be placed along the wall, bent reasonably 

Fig.18)

foot holes

and hidden possibly. Min. semidiameter of bending the pipe is 

10cm. 

2. If the outdoor unit is higher than the wall hole, you must set 

handle

a U-shaped curve in the pipe before pipe goes into the room, 

foot holes

in order to prevent rain from getting into the room. (As show in 

valve cover

Fig.18

Fig.23)

Fig.19

Step four: connect indoor and outdoor pipes
1. Remove the screw on the right handle of outdoor unit and 

the drain hose can't 
raise upwards.

then remove the handle.(As show in Fig.19)

2. Remove the screw cap of valve and aim the pipe joint at the 

bellmouth of pipe.(As show in Fig.20)

Wall

Fig.23

pipe joint
gas pipe
liquid pipe

U-shaped curve

gas valve

Fig.22

union nut

Drain hose

Note:

liquid valve

Fig.20

1.The through-wall height of drain hose shouldn't be higher 

3. Pretightening the union nut with hand.

than the outlet pipe hole of indoor unit.(As show in Fig.23)

4. Tighten the union nut with torque wrench by referring to the 

2.Slant the drain hose slightly downwards. The drain hose 

sheet below.

can't be curved, raised and fluctuant, etc. (As show in Fig.24)

Hex nut diameter(mm)
Tightening torque(N m)
Φ6.35(1/4")
15.7(1.6kg.m)
Φ9.52(3/8")
29.4(3.0kg.m)
Φ12.70(1/2")
49.0(5.0kg.m)
Φ15.88(5/8")
73.6(7.5kg.m)

3.The water outlet can't be placed in water in order to drain 

.

smoothly.(As show in Fig.25)

The drain hose 
can't be fluctuant

Step five: connect outdoor electric wire
1. Remove the wire clip; connect the power connection wire  to 

The water 
outlet can't 
be placed 
in water

the wiring terminal according to the color; fix them with screws. 

(As show in Fig.21)

The drain 
hose can't 
be fluctuant

Fig.25

The water outlet 
can't be fluctuant
Fig.24

38
Installation and Maintenance

Sayfa 42

Service Manual

8.7 Vacuum Pumping and Leak Detection

Use Vacuum Pump 
1. Remove the valve caps on the liquid valve and gas valve 

and the nut of refrigerant charging vent. 

2. Connect the charging hose of piezometer to the refrigerant 

charging vent of gas valve and then connect the other charging 

hose to the vacuum pump. 

3. Open the piezometer completely and operate for 10-15min 

to check if the pressure of piezometer remains in -0.1MPa.

4. Close the vacuum pump and maintain this status for 1-2min 

to check if the pressure of piezometer remains in -0.1MPa. If 

the pressure decreases, there may be leakage.

5. Remove the piezometer, open the valve core of liquid valve 

and gas valve completely with inner hexagon spanner. 

6. Tighten the screw caps of valves and refrigerant charging 

vent. (As show in Fig.26)

piezometer 

Lo
Hi

liquid valve

gas valve

valve cap

vacuum pump

refrigerant 
charging vent

valve cap

nut of refrigerant 
charging vent

inner 
hexagonspanner

close

open

Fig.26

Leakage Detection 
1. With leakage detector：  

Check if there is leakage with leakage    detector.

2. With soap water:

If leakage detector is not available, please use soap water for 

leakage detection. Apply soap water at the suspected position

and keep the soap water for more than 3min. If there are air 

bubbles coming out of this position, there's a leakage.

39
Installation and Maintenance

8.8 Check after Installation and Test 
Operation

1. Check After Installation
Check according to the following requirement after finishing 
installation.

NO.
Items to be checked
Possible malfunction

1
Has the unit been 
installed firmly?

The unit may drop, shake or 
emit noise.

2
Have you done the 
refrigerant leakage test?

It may cause insufficient cooling 
(heating) capacity.

3
Is heat insulation of 
pipeline sufficient?

It may cause condensation and 
water dripping.

4
Is water drained well?
It may cause condensation and 
water dripping.

Is the voltage of power 
supply according to the 
voltage marked on the 
nameplate?

It may cause malfunction or 
damage the parts.

5

6
Is electric wiring and 
pipeline installed 
correctly?

It may cause malfunction or 
damage the parts.

7
Is the unit grounded 
securely?
It may cause electric leakage.

8
Does the power cord 
follow the specification?

It may cause malfunction or 
damage the parts.

9
Is there any obstruction 
in air inlet and air outlet?

It may cause insufficient cooling 
(heating) capacity.

The dust and 
sundries caused 
during installation are 
removed?

It may cause malfunction or 
damaging the parts.

10

11
The gas valve and liquid 
valve of connection pipe 
are open completely?

It may cause insufficient cooling 
(heating) capacity.

12
Is the inlet and outlet 
of piping hole been 
covered?

It may cause insufficient cooling
(heating) capacity or waster 
eletricity.

2. Test Operation
(1) Preparation of test operation
The client approves the air conditioner installation.
Specify the important notes for air conditioner to the client.
(2) Method of test operation
Put through the power, press ON/OFF button on the remote 
controller to start operation.Press MODE button to select AUTO, 
COOL, DRY, FAN and HEAT to check whether the operation is 
normal or not.If the ambient temperature is lower than 16 ℃, 
the air conditioner can’t start cooling.

Sayfa 43

9.Troubleshooting
9.1 Judgement by Flashing LED of Indoor

No.
Malfunction 

Error 
Code
A/C Status
Possible Causes

Name

1. The main board and the display panel are not connected well.
2. The OVC terminal on main board is not connected well with the 
high pressure switch on the complete unit.
3. The wiring of high pressure switch is loosened.
4. Refrigerant is superabundant.
5. Poor heat exchange (including blocked heat exchanger and bad 
radiating environment ).
6. Ambient temperature is too high.(if it is 3-phase unit, the high 
pressure protection may be caused by overcurrent protection due to 
this reason)
7. The supply voltage is abnormal.(if it is 3-phase unit, the high 
pressure protection may be caused by overcurrent protection due to 
this reason)
8. The air intake and air discharge at indoor / outdoor heat 
exchanger are not smooth. The air cycle is short circuited.
9. Filter and heat exchange fins of indoor/outdoor units are blocked.
10. The system pipeline is blocked.
11. The gas valve and liquid valve for outdoor unit are not 
completely opened.
12. The OVC input is at high level.

During cooling and drying 
operation, except indoor 
fan operates, all loads 
stop operation. During 
heating operation, if it is 
inverter unit, the complete 
unit stops; if it is floor 
standing unit, the complete 
unit stops and operation 
of remote controller or 
controller is unavailable.

1
High pressure
protection
E1

1. Poor air-return in indoor unit.
2. Abnormal fan speed.
3. Dirty evaporator.
4. System is normal, but the indoor tube temperature sensor is 
abnormal, or the tube temperature sensor is not connected well.

During cooling and drying 
operation,compressor and 
outdoor fan stop while 
indoor fan operates.

2
Freeze 
protection
E2

1. The main board and display panel are not connected well.
2. The LPP terminal on the main board is not connected well with 
the high pressure switch on the complete unit.
3. The wiring of the high pressure switch is loosened. High pressure
switch is damaged or poorly contacted.
4. Insufficient or leaking out refrigerant.
5. The LPP input is at high level.

3
Low pressure
protection of
compressor

E3
The complete unit
stops

During cooling and drying 
operation, compressor 
and outdoor fan stop while 
indoor fan operates. During 
heating operation,all loads 
stop.

1. Abnormal system (e.g.: blockage, etc)
2. Abnormal rotation speed of outdoor motor (cooling )
3. Abnormal air intake (cooling)
4. System is normal, but the compressor discharge temperature
sensor is abnormal or poorly contacted.

High discharge
temperature 
protection
of compressor

4

E4

1. Unstable supply voltage. Normal fluctuation shall be within 10% 
of the rated voltage on the nameplate.
2. Supply voltage is too low and load is too high.
3. Measure the current of live wire on main board. If the current 
isn’t higher than the overcurrent protection value, please check the 
controller.
4. The indoor and outdoor heat exchangers are too dirty, or the air 
inlet and air outlet are blocked.
5. The fan motor is not running. Abnormal fan speed: fan speed is 
too low or the fan doesn’t run.
6. The compressor is not running normally. There is abnormal 
sound, oil leakage or the temperature of the shell is too high, etc.
7. There’s blockage in the system. (filth blockage, ice plug, greasy
blockage, Y-valve hasn’t beenopened completely)

During cooling and drying 
operation, compressor and
outdoor fan stop while 
indoor fan operates. During 
heating operation, all loads
stop.

5
Overcurrent 
protection
E5

Heating 
indicator off 
for 0.5s and 

Not the error code. It’s 
the status code for the 
operation

6
Defrosting

then blinks 

for 10s

40
Installation and Maintenance

Service Manual

Sayfa 44

Service Manual

No.
Malfunction 

Error 
Code
A/C Status
Possible Causes

Name

7
WIFI 
communication 

JF
Loads operate normally, while the unit can’t 
be normally controlled by APP.

malfunction

During cooling operation,
compressor stops while indoor fan motor
operates. During heating operation, the
complete unit stops.

8
Communication

malfunction
E6

9
Overload
malfunction
E8
The entire unit stops.

During cooling and drying
operation, compressor will stop while indoor 
fan will operate; During heating operation, 
the complete unit will stop operation.

10
Overload
protection for
compressor

H3

11
In defect of

refrigerant
F0
The Dual-8 Code Display will show F0  and 
the complete unit stops.

The unit will stop operation as it reaches the 

temperature point. During cooling and drying 

Indoor ambient 

operation, except IDU fan motor operates, 

temperature 

12

F1

other loads stop operation; During heating 

sensor is open/ 

operation, the heating fan motor operates 

short-circuited

according to the conditions of blowing 

residual heat.

The unit will stop operation as it reaches the 

Indoor 

temperature point. During cooling and drying 

evaporator 

operation, except IDU fan motor operates, 

13

temperature 

F2

other loads stop operation; During heating 

sensor is open/

operation, the heating fan motor operates 

short-circuited

according to the conditions of blowing 

residual heat.

The unit will stop operation as it reaches 

Outdoor 

the temperature point. During cooling and 

ambient 

drying operation, the compressor stops 

14

temperature 

F3

operation while IDU fan motor operates; 

sensor is open/ 

During heating operation, the heating fan 

short-circuited

motor operates according to the conditions 

of blowing residual heat.

The unit will stop operation as it reaches the 
temperature point. During cooling and drying 
operation, the compressor stops operation 
while IDU fan motor operates; During heating 
operation, the heating fan motor operates 
according to the conditions of blowing 
residual heat.

Outdoor 
condenser 
temperature 
sensor is open/ 

15

F4

short-circuited

41
Installation and Maintenance

1. Main board of indoor unit is damaged;
2. Detection board is damaged;
3. The connection between indoor unit and detection 
board is not good;

Refer to the corresponding malfunction analysis.

1. Indoor and outdoor heat exchanger is too dirty?
Or air inlet/outlet is blocked?
2. Fan motor doesn't work at a normal fan speed;fan 
speed is too low or the fan doesn't run.
3. Compressor operates normally or not? Is there 
any abnormal noise or oil leak? Casing is too hot?
4. System is blocked inside? (Dirt blockage? Ice 
blockage?
Oil blockage? Y-valve is not fully open?)
5. Main board temperature sensor detects wrongly.

1. Wiring terminal OVC-COMP is loosened. In 
normal state, the resistance for this terminal should 
be less than 1ohm.
2.Refer to the malfunction analysis ( discharge 
protection, overload)

1. In defect of refrigerant;
2. Indoor evaporator temperature sensor works 
abnormally;
3. The unit has been plugged up somewhere.

1. The wiring terminal between indoor ambient 
temperature sensor and maiboard is loosened or 
poorly contacted;
2. There’s short circuit due to trip-over of the parts 
on maiboard;
3. Indoor ambient temperature sensor is damaged 
(Please check it by referring to the resistance table 
for temperature sensor);
4. Mainboard is broken.

1. The wiring terminal between indoor evaporator 
temperature sensor and maiboard is loosened or 
poorly contacted;
2. There’s short circuit due to trip-over of the parts 
on maiboard;
3. Indoor evaporator temperature sensor is damaged 
(Please check it by referring to the resistance table 
for temperature sensor);
4. Mainboard is broken.

1. The wiring terminal between outdoor ambient 
temperature sensor and maiboard is loosened or 
poorly contacted;
2. There’s short circuit due to trip-over of the parts 
on maiboard;
3. Outdoor ambient temperature sensor is damaged 
(Please check it by referring to the resistance table 
for temperature sensor);
4. Mainboard is broken.

1. The wiring terminal between outdoor condenser 
temperature sensor and maiboard is loosened or 
poorly contacted;
2. There’s short circuit due to trip-over of the parts on 
maiboard;
3. Outdoor condenser temperature sensor is 
damaged (Please check it by referring to the 
resistance table for temperature sensor);
4. Mainboard is broken.

Sayfa 45

No.
Malfunction 

Error 
Code
A/C Status
Possible Causes

Name

1. The wiring terminal between outdoor discharge 
temperature sensor and maiboard is loosened or poorly 
contacted;
2. There’s short circuit due to trip-over of the parts on 
maiboard;
3. Outdoor discharge temperature sensor is damaged 
(Please check it by referring to the resistance table for 
temperature sensor);
4. Mainboard is broken.

The unit will stop operation as it 
reaches the temperature point. 
During cooling and drying operation, 
the compressor stops operation 
while IDU fan motor operates; During 
heating operation, the heating fan 
motor operates according to the 
conditions of blowing residual heat.

Outdoor 
discharge 
temperature 
sensor is open/ 

16

F5

short-circuited

"During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation."

1. The compressor wiring connection is not well connected;
2. The compressor is damaged;
3. The Outdoor mainboard is damaged.

17
IPM protection
H5

"During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation"

1. The unit voltage input is abnormal;
2. The inductance wire is not well connected;
3. The Outdoor mainboard is damaged.

18
PFC protection
HC

"During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation."

1. The system pressure is too high;
2. The unit voltage input is too low;
3. The compressor wiring connection is not well connected;
4. The Outdoor mainboard is damaged.

19
Compressor 

loss step 
protection

H7

"During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation."

1. The compressor wiring connection is not well connected;
2. There’s too much refrigerant;
3. The compressor is damaged;
4. The Outdoor mainboard is damaged.

20
Startup failure
LC

"During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation."

1. The unit voltage input is within abnormal range;
2. The electric reactor connection wiring is not well 
connected;
3. The Outdoor mainboard is damaged.

21
Capacitor 

charge 
malfunction

PU

"During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation."

22
IPM sensor 

circuit 
malfunction

P7

The Outdoor mainboard is damaged.

"During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation."

23
IPM high 
temperature 

1. The temperature of IPM module is too high; 
2.The Outdoor mainboard is damaged.

P8

protection

"During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation."

24
Over voltage 
protection for 

1. The input voltage is too high;
2. The Outdoor mainboard is damaged.

PH

PN

"During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation."

25
Low PN voltage 

1. The input voltage is too low;
2. The Outdoor mainboard is damaged.

protection
PL

"During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop operation."

1. The electric reactor connection wiring is not well 
connected;
2.The Outdoor mainboard is damaged.

26
Charging Circuit 

Malfunction
PU

42
Installation and Maintenance

Service Manual

Sayfa 46

Service Manual

9.2 How to Check Simply the Main Part of Indoor 

1. High pressure protection (E1)

Start

Are the display panel and main board

Connect the display panel with the main board well

no
Malfunction is eliminated.

connected tightly?

yes

no

Are  the OVC terminal 

on the main board connected

Connect the OVC terminal on the main board with 
the high pressure switch on the complete unit well
no
Malfunction is eliminated.

well with the high pressure switch on the 

complete unit?

yes

no

Is the wiring of high pressure 

If the wire of high pressure switch is loosened, please
connect the wires according to the circuit diagram.
If the high pressure switch is broken or poorly contacted,
please replace it.

yes
Malfunction is eliminated.

switch loosened? Is the high pressure switch broken

or poorly contacted?

no

no

Adjust the volume of refrigerant according to the
requirement of the system
yes
Malfunction is eliminated.

Is the refrigerant superabundant?

no

no

Is there poor heat 

exchange? (Including filth blockage of heat

Adjust the unit to improve the heat exchange of unit
yes
Malfunction is eliminated.

exchanger and bad radiating

environment );

no

no

Is the ambient temperature 

too high?(If it is a 3-phase unit, high pressure 

Decrease the ambient temperature
yes
Malfunction is eliminated.

protection  may be caused by overcurrent 

protection due to this)

no

no

Is the supply voltage normal?

The normal voltage is lower than 90% of the rated 
no
Malfunction is eliminated.

voltage on the nameplate
(If it is a 3-phase unit, high pressure protection may

 be caused by overcurrent protection

 due to this)

no

yes

 Are the air
intake and air discharge at indoor / outdoor heat

Adjust the system to make the air intake and air 
discharge of indoor and outdoor heat exchangers 
smooth

no
Malfunction is eliminated.

exchanger smooth?

yes

no

Is there filth blockage on the filter or on the
 heat exchanger fins of indoor / outdoor unit?

no

Remove the blockage.
Malfunction is eliminated.

no

no

Is there blockage inside the pipeline of the system

Remove the blockage inside the pipeline of the system
yes
Malfunction is removed.

no

no

Are the gas valve and liquid valve for

Open the outdoor gas valve and liquid valve completely
no
Malfunction is eliminated.

outdoor unit opened completely?

yes

no

Replace the controller

End

43
Installation and Maintenance

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

Sayfa 47

2.  Freeze protection(E2)

Start

Poor air return in indoor unit

no
no

The fan speed is abnormal

no
no

Evaporator is dirty

System is normal, but
resistance value of indoor tube temperature sensor
 
is abnormal 

no

Replace control panel

End

44
Installation and Maintenance

Service Manual

Clean the filter, check

Is the problem 

 
h
g
u
o
n
e
 s'e
r
e
h
t r
e
h
t
e
h
w 

yes
yes

space at the top of 
indoor unit 
 

solved?

Check whether jumper 
cap and motor is 

Is the problem 

yes
yes

solved?

normal

Is the problem 

Clean the evaporator

yes
yes

solved?

no

Replace temperature 
sensor 

Is the problem 

yes
yes

solved?

no

Sayfa 48

Service Manual

3. Low pressure protection of compressor (E3)

45
Installation and Maintenance

“E3" is 
displayed on 

the unit.

Is the terminal 
of low pressure switch 

Re-insert it tightly 
to ensure reliable 

No

inserted well?

contact.

Is the 
malfunction 
eliminated?

Yes
No

Is the 

system pressure 

higher than the acting 
value of the low pressure

Yes

Add refrigerant.

 switch?

Is the 
malfunction 
eliminated?

No
No

Yes

Test when denergized: 
 is it a closed circuit between the two 

Replace the low 
pressure switch.

No

terminals led out from 

the switch?

Is the 
malfunction 
eliminated?

Yes

No

Yes

Yes

The controller is 
defined abnormal; 

replace it.

Yes

End

Sayfa 49

4.  High discharge temperature protection of compressor (E4)

Start

Abnormal system (blockage)

no

    Motor speed of 
outdoor unit is abnoral
(under cooling mode)

no

     Abnormal air in for 
outdoor unit (under cooling
       mode) 

no

       Normal syste, but resistance 
value of discharge temperature sensor
       for compressor is abnormal 

no

Replace control 

panel

End

46
Installation and Maintenance

Service Manual

Check the system;
eliminate the 

Problem is 
solved

yes
yes

blockage

no

Check wiring and
fan capacitor, 
replace motor

Problem is 
solved

yes

yes

no

Check the unit to
let the air come in
and come out 
smoothly

Problem is 
solved

yes

yes

no

Replace tempera-
ture sensor

Problem is 
solved

yes
yes

no

Sayfa 50

Service Manual

5.  Overcurrent protection (E5)

Start 

nameplate
yes

Normal fluctuation is within 10% of the rated voltage on the 

Is the supply voltage unstable with big fluctuation?

no

no

Adjust the supply voltage to maintain it within normal range
yes

Is the supply voltage too low with overload?

no

no

the blockage of air inlet and outlet
yes

Is the indoor / outdoor heat exchanger too dirty, 

Clean the indoor and outdoor heat exchangers and remove

or are the air inlet and outlet blocked?

no

no

normally
yes

Check the motor and reinstall the motor to have the fan run 

Is the fan motor  running abnormally; is the fan speed too 

low or does it fail to run?

no

no

Measure the current of live wire 
on the main board with a clamp ampere meter.  Is the 

Replace the controller
no
Malfunction is eliminated.

current higher than the value of the overcurrent 
                             protection?

yes

no

Is there blockage inside the system?
 (Filth blockage, ice plug, greasy blockage, the Y-valve hasn’ t 

Flush the heat exchangers with high pressure nitrogen
yes

been opened completely)

no

no

Replace the compressor
yes

Is the compressor running
abnormally? Is there abnormal sound or oil leakage; is

the temperature of the shell too high, etc.?

no

no

Replace the control 

panel

End

47
Installation and Maintenance

yes

Malfunction is eliminated.

yes

Malfunction is eliminated.

yes

Malfunction is eliminated.

yes

Malfunction is eliminated.

yes

yes

Malfunction is eliminated.

yes

Malfunction is eliminated.

Sayfa 51

6. Malfunction of Temperature Sensor (F1, F2, F3, F4, F5)

48
Installation and Maintenance

Service Manual

Troubleshooting for 
F1,F2 malfunction

Is
the wiring terminal between the 
temperature sensor and the controller 

yes

loosened or poorly contacted?

Insert the temperature 

sensor tightly

no

Is malfunction  

no

eliminated

Is there short circuit due to trip-over of 

yes

the parts?

Make the parts upright

no

Is malfunction

no

yes

eliminated

Is the 
temperature sensor  normal according 

no

to the Resistance 

Table?

Replace it with a
temperature sensor 
with the same model

yes

yes
Is malfunction 

removed
no

Replace the mainboard 
with the same model.

yes

End

Sayfa 52

Service Manual

7. Communication malfunction(E6)

E6

If the unit operates normally 
      before malfunction

Check built-in wiring 
of indoor and outdoor 
unit

If the wiring is 
  damaged?
Replace the 
      wire

 Check the malfunction 
type with communication 
malfunction detector

Is the malfunction 
    eliminated?

Replace outdoor 
mainboard AP1

Malfunction of outdoor 
communication circuit

Replace indoor 
mainboard AP2

Is the malfunction 
    eliminated?

End

49
Installation and Maintenance

Check the connection 
wire according to the 
wiring diagram.

If the connection wire
 is connected well?

Reconnect the wire or 
replace the connection 
wire according to the 
wiring diagram.

Is the malfunction 
    eliminated?

Sayfa 53

8. High temperature and overload protection (AP1 below means control board of outdoor unit) E8

Main detection points:
● If the outdoor ambient temperature is in normal range;
● If the indoor and outdoor fan are running normally;
● If the radiating environment of indoor and outdoor unit is good.
Malfunction diagnosis process:

Start

If the outdoor ambient temperature is 

higher than 53°C?

No

is good?

No

If the indoor and outdoor fan are 

running normally?

Yes

Replace outdoor 

mainboard

End

50
Installation and Maintenance

Service Manual

Normal protection, please use it 
after improving the outdoor ambient 

Yes

Unit restarts 

Yes

normally

temperature

No

Improve the radiating environment of 

Yes

Unit restarts 

unit (clean the heat exchanger and 

normally

remove surrounding obstacles)

No

Yes

Connect normally?
Adjust the 
connection

Yes

Replace fan

Yes

Fan capacitor is broken?

capacitor

No

Yes

Motor is broken?

Replace motor

No

Replace mainboard

Sayfa 54

Service Manual

9

Troubleshooting
for F0 malfunction

Heat exchangers are 
too dirty or the air inlet/outlet 

Clean the heat exchangers and remove 

Yes

blockage of air inlet/outlet.

is blocked.  

No
No

Compressor doesn't work
normally. Strange noise or leakage occurs.
Make compressor run normally.
Casing is too hot.

Yes

No
No

Remove blockage in the system
System is blocked inside
(dirt block, ice block, oil block, Y-valve no

Yes

fully open).

No
No

The refrigerant is leaking 
Check the leaking status of refrigerant
and charge refrigerant 

Yes

No
No

Replace a main
board with the
same model. 

End

51
Installation and Maintenance

Malfunction is 

Yes

eliminated.

Malfunction is 

Yes

eliminated.

Malfunction is 

Yes

eliminated.

Malfunction is 

Yes

eliminated.

Sayfa 55

10. Malfunction of detecting plate(WIFI) JF

Start

check if the connection wire
 are correctly connected

Yes

Replace the detecting 
plate with the same model

Is malfunction 

eliminated

Replace the mainboard 

No

Yes

with the same model

The end

52
Installation and Maintenance

Service Manual

Sayfa 56

Service Manual

9.3 How to Check Simply the Main Part of Outdoor

1. E1: High pressure protection
Malfunction description: The pressure of ODU high pressure side is too high.
Main check points:
a. Is the system pressure is normal;
b. Is the pressure switch is normal;
c. If above two issues are normal, the mainboard circuit is with malfunction, please replace mainboard.

2. E2: Freeze protection
Malfunction description: Too low tube temperature of IDU under cooling mode.
Main check point:
a. Check if the IDU fan speed is normal, if the air inlet/outlet is smooth;
b. Check if the IDU, ODU heat exchanger is too dirty that affect the heat exchanging effect.

3. E3: Low pressure protection
Malfunction description: The pressure of ODU low pressure side is too low
Main check points:
a. Is the system pressure is normal;
b. Is the pressure switch is normal;
c. If above two issues are normal, the mainboard circuit is with malfunction, please replace mainboard.

4. E4: The air discharging temperature is too high
Main check points:
a. Pull off the ODU air discharging temp. sensor, check if the temp. sensor resistance value match with present temperature;
b. Check if the refrigerant is too much or too little;
c. Check if the IDU, ODU heat exchanger is too dirty that affect the heat exchanging effect.

5. E6: IDU, ODU communication malfunction 
Main check points: 
a. Check if the wiring connection if IDU and ODU is correct; 
b. Check if the communication power supply voltage is normal, if the DC voltage is more than 56±15%, please replace the ODU 
mainboard.

6. F4: Outdoor condenser temperature sensor open or short circuit
Malfunction description: The ODU condenser temp. sensor temperature value is too high or too low that out of the normal range. 
Main check points: 
a. Pull off the ODU condenser temp. sensor, check if the temp. sensor resistance value match with present temperature; 
b. If the temp. sensor resistance is normal, please replace ODU mainboard;

7. F3: ODU ambient temp. sensor open/short circuit
Malfunction description: The ODU ambient temp. sensor temperature value is too high or too low that out of the normal range.
Main check points:
a. Pull off the ODU ambient temp. sensor, check if the temp. sensor resistance value match with present temperature;
b. If the temp. sensor resistance is normal, please replace ODU mainboard;

8. F5:ODU air discharging temp. sensor open, short circuit
Malfunction description: The ODU air discharging temp. sensor temperature value is too high or too low that out of the normal
range.
Main check points:
a. Pull off the ODU air discharging temp. sensor, check if the temp. sensor resistance value match with present temperature;
b. If the temp. sensor resistance is normal, please replace ODU mainboard;

9. H3: Compressor overload protection
Malfunction description: Temperature of top compressor is over than the limit value
Main check points:
a. Normally the compressor overload protection switch is always on, check if the switch is normal.

10. H5: IPM module protection
Main check points:
a. Check if the compressor wiring connection is well connected, if the compressor wiring sequence is correct. The correct wiring
sequence is yellow, blue, red in anticlockwise direction.
b. Pull off the compressor connection wire, measure the impedance between phase U/V/W and P/N, if any of them is short
circuit, please replace the ODU mainboard;
c. Check if the compressor is damaged, measure the resistance between any two phases of the compressor three phases.

53
Installation and Maintenance

Sayfa 57

They should be almost the same, if they’re with big difference, the compressor is damaged, please check the insulation
condition of three phases to the case.

11. HC: PFC protection
Main check points:
a. Check if the unit voltage input is normal;
b. Check if the inductance wire is well connected;
c. If the above two issues are normal, please replace the ODU mainboard.

12. H7: Compressor out-of-step malfunction
Main check points:
a. Check if the system pressure is too high?
b. Check if the working voltage is too low?

13. Lc; Compressor startup failure
Main check points:
a. Check if the compressor wiring connection is well connected;
b. Check if the compressor startup interval is over 3 minutes, if not, please water for 3 minutes than turn on the unit;
c. Check if there’s too much refrigerant.
d. Check if the compressor is damaged, measure the resistance between any two phase of the three phases, they should be
almost the same, if they’re with big difference, the compressor is damaged, please check the insulation condition of three
phases to the case.

14. PU: ODU capacitor charging malfunction
Malfunction description: after the unit is energized, before the compressor starting operation, the electrolytic capacitor on
mainbiard should be charging. After the charging command is received, if it is detected by chip that the voltage of electrolytic
capacitor is low, it is ODU capacitor charging malfunction.
Main check points:
a. Check if the unit voltage input is within normal range.
b. Check if the electric reactor connection wiring and capacitor connection wiring is well connected, if the electric reactor is open
circuit.
c. If above two issues are normal, please replace ODU mainboard.

15. P7: Module temp. sensor circuit malfunction
Malfunction description: There’s a thermal resistance on top of IPM module, for detecting the module surface temperature, if it is
detected by chip that the temperature is over the normal range.
Main check points:
a. The circuit on mainboard is damaged, please replace the ODU mainboard.

16. P8: Module temperature too high protection
Main check points:
a. After daubing radiating glue on IPM module, fix it with screw, if the glue is aging or the fixing screw is loosened, please daub
the glue again or fix the screw and test again, if the malfunction still exist, please replace the mainboard.

17. PH: ODU DC bus bar voltage too high
Malfunction description: When it is detected the voltage of DC bus bar on electrolytic capacitor is over 420V.
Main check points:
a. Check if the input voltage is too high that out of normal power supply voltage range.

18. PL: ODU DC bus bar voltage too low
Malfunction description: When it is detected the voltage of DC bus bar on electrolytic capacitor is less than 200V.
Main check points:
a. Check if the input voltage is too low that out of normal power supply voltage range.

19. PU: Charging circuit malfunction
Malfunction description: The DC bus bar voltage is less than 100V during charging.
Main check points: Check if the circuit wiring connection is loosened or correct as wiring diagram, well connect the wire, if the
malfunction still exist, please replace the mainboard.

54
Installation and Maintenance

Service Manual

Sayfa 58

Service Manual

9.4 Maintenance Method for Normal Malfunction

1. Air Conditioner Can't be Started Up

Possible Causes 
Discriminating Method (Air conditioner Status)
Troubleshooting 

Confirm whether it's due to power failure. If yes, 
wait for power recovery. If not, check power 
supply circuit and make sure the power plug is 
connected well. 
Wrong wire connection between 
indoor unit and outdoor unit, 
or poor connection for wiring 
terminals 

No power supply, or poor 
connection for power plug

After energization, operation indicator isn’t bright 
and the buzzer can't give out sound 

Under normal power supply circumstances, 
operation indicator isn't bright after energization

Make sure the air conditioner is grounded 
reliably
Make sure wires of air conditioner is connected 
correctly
Check the wiring inside air conditioner. Check 
whether the insulation layer of power cord is 
damaged; if yes, place the power cord.
Model selection for air switch is 
improper
After energization, air switch trips off
Select proper air switch

Electric leakage for air conditionerAfter energization, room circuit breaker trips off at 

once

After energization, operation indicator is bright, 
while no display on remote controller or buttons 
have no action. 

Malfunction of remote controller 

2. Poor Cooling (Heating) for Air Conditioner 

Possible Causes 
Discriminating Method (Air conditioner Status)
Troubleshooting 
Set temperature is improper
Observe the set temperature on remote controller Adjust the set temperature
Rotation speed of the IDU fan 
motor is set too low
Small wind blow 
Set the fan speed at high or medium 

Filter of indoor unit is blocked 
Check the filter to see it's blocked 
Clean the filter 

Check whether the installation postion is proper 
according to installation requirement for air 
conditioner 

Installation position for indoor unit 
and outdoor unit is improper 

Discharged air temperature during cooling is 
higher than normal discharged wind temperature; 
Discharged air temperature during heating is 
lower than normal discharged wind temperature; 
Unit's pressure is much lower than regulated 
range 

Refrigerant is leaking 

Malfunction of 4-way valve 
Blow cold wind during heating 
Replace the 4-way valve 

Discharged air temperature during cooling is 
higher than normal discharged wind temperature; 
Discharged air temperature during heating is 
lower than normal discharged wind temperature; 
Unit't pressure is much lower than regulated 
range. If refrigerant isn’t leaking, part of capillary 
is blocked 

Malfunction of capillary

Flow volume of valve is 
insufficient 

The pressure of valves is much lower than that 
stated in the specification
Open the valve completely 

Malfunction of horizontal louver 
Horizontal louver can’t swing 
Refer to point 3 of maintenance method for 
details 

Malfunction of the IDU fan motor The IDU fan motor can’t operate 
Refer to troubleshooting for H6 for maintenance 
method in details 

Malfunction of the ODU fan motor The ODU fan motor can't operate 
Refer to point 4 of maintenance method for 
details 

Malfunction of compressor 
Compressor can't operate 
Refer to point 5 of maintenance method for 
details 

3. Horizontal Louver Can't Swing

Possible Causes 
Discriminating Method (Air conditioner Status)
Troubleshooting 

Connect wires according to wiring diagram to 
make sure all wiring terminals are connected 
firmly
Stepping motor is damaged 
Stepping motor can't operate 
Repair or replace stepping motor 

Wrong wire connection, or poor 
connection 

Check the wiring status according to circuit 
diagram 

Main board is damaged 
Others are all normal, while horizontal louver 
can't operate 
Replace the main board with the same model

55
Installation and Maintenance

Check the circuit according to circuit diagram 
and connect wires correctly. Make sure all 
wiring terminals are connected firmly

Replace batteries for remote controller
Repair or replace remote controller

Adjust the installation position, and install the 
rainproof and sunproof for outdoor unit

Find out the leakage causes and deal with it. 
Add refrigerant. 

Replace the capillary

Sayfa 59

4. ODU Fan Motor Can't Operate

Possible causes 
Discriminating method (air conditioner status)
Troubleshooting 

Wrong wire connection, or poor 
connection 

Check the wiring status according to circuit 
diagram 

Measure the capacity of fan capacitor with an 
universal meter and find that the capacity is out of 
the deviation range indicated on the nameplate of 
fan capacitor.

Capacity of the ODU fan motor is 
damaged 

Power voltage is a little low or 
high 

Use universal meter to measure the power supply 
voltage. The voltage is a little high or low 
Suggest to equip with voltage regulator 

When unit is on, cooling/heating performance 
is bad and ODU compressor generates a lot of 
noise and heat. 

Motor of outdoor unit is damaged

5. Compressor Can't Operate

Possible causes 
Discriminating method (air conditioner status)
Troubleshooting 

Wrong wire connection, or poor 
connection 

Check the wiring status according to circuit 
diagram 

Measure the capacity of fan capacitor with an 
universal meter and find that the capacity is out of 
the deviation range indicated on the nameplate of 
fan capacitor.

Capacity of compressor is 
damaged 

Power voltage is a little low or 
high 

Use universal meter to measure the power supply 
voltage. The voltage is a little high or low 
Suggest to equip with voltage regulator 

Coil of compressor is burnt out
Use universal meter to measure the resistance 
between compressor terminals and it's 0
Repair or replace compressor

Cylinder of compressor is blocked Compressor can't operate 
Repair or replace compressor 

6. Air Conditioner is Leaking 

Possible causes 
Discriminating method (air conditioner status)
Troubleshooting 

Drain pipe is blocked 
Water leaking from indoor unit
Eliminate the foreign objects inside the drain 
pipe
Drain pipe is broken 
Water leaking from drain pipe
Replace drain pipe 

Wrapping is not tight
Water leaking from the pipe connection place of 
indoor unit
Wrap it again and bundle it tightly 

7. Abnormal Sound and Vibration

Possible causes 
Discriminating method (air conditioner status)
Troubleshooting 
When turn on or turn off the unit, 
the panel and other parts will 
expand and there's abnormal 
sound 

There's the sound of "PAPA"
Normal phenomenon. Abnormal sound will 
disappear after a few minutes. 

When turn on or turn off the unit, 
there's abnormal sound due 
to flow of refrigerant inside air 
conditioner

Water-running sound can be heard 
Normal phenomenon. Abnormal sound will 
disappear after a few minutes. 

Foreign objects inside the indoor 
unit or there're parts touching 
together inside the indoor unit 

Remove foreign objects. Adjust all parts' 
position of indoor unit, tighten  screws and stick 
damping plaster between connected parts 
Foreign objects inside the outdoor 
unit or there're parts touching 
together inside the outdoor unit 

There's abnormal sound fro indoor unit

Remove foreign objects. Adjust all parts' 
position of outdoor unit, tighten  screws and 
stick damping plaster between connected parts 
Short circuit inside the magnetic 
coil 

There's abnormal sound fro outdoor unit

During heating, the way valve has abnormal 
electromagnetic sound 
Replace magnetic coil 

Abnormal shake of compressor 
Outdoor unit gives out abnormal sound 
Adjust the support foot mat of compressor, 
tighten the bolts 

Abnormal sound inside the 
compressor 
Abnormal sound inside the compressor 

56
Installation and Maintenance

Service Manual

Connect wires according to wiring diagram to 
make sure all wiring terminals are connected 
firmly

Replace the capacity of fan

Change compressor oil and refrigerant. If no 
better, replace the compressor with a new one

Connect wires according to wiring diagram to 
make sure all wiring terminals are connected 
firmly

Replace the compressor capacitor

If add too much refrigerant during maintenance, 
please reduce refrigerant properly. Replace 
compressor for other circumstances. 

Sayfa 60

Service Manual

10. Exploded View and Parts List

10.1 Indoor Unit

24K

The component picture is only for reference; please refer to the actual product.

57
Installation and Maintenance

Sayfa 61

NO.
Description
Part Code

Product Code
CH156N02400

1
Baffle Plate
2611454401
3

2
Left Side Plate Sub-Assy
00013100003
1

3
Top Cover Sub-Assy
20906900008
1

4
Rear Plate Sub-Assy
01304364
1

5
Right Side Plate Sub-Assy
00013000005
1

6
Breakwater Sub-Assy
01364069P
1

7
Evaporator Assy
01100100218
1

8
Protection Cover
20124112
1

9
Air Guard Sub-Assy
/ 
/

10
SteppingMotor
1521210104
1

11
Air Louver 1
10514120
1

12
Air Louver 2
10514121
5

13
Stepping Motor
15214211
1

14
Guide Louver 1
10514167
6

15
Guide Louver 2
 /
/

16
Guide Louver 3
 /
/

17
Air Outlet Panel Assy
00801400056
1

18
Big Front Panel-Assy
000055060001
1

19
Display Board
300001000195
1

20
Display Sub-Assy
000057000031
1

21
Air Intake Panel Assy
0000410001901
1

22
Filter Sub-Assy
1112423502
4

23
Temperature Sensor
390001379
1

24
Chassis
22224474
1

25
Propeller HousingPress Plate
01364215
1

26
Diversion Circle
10374006
1

27
Propeller Housing Sub-assy
12104226
1

28
Fan Motor
1501403301
1

29
Centrifugal Fan
10314075
1

30
Drainage Pipe Sub-assy
0523543401
1

31
Water Tray Sub-Assy
209041060005
1

32
Terminal Board
420001000002
1

33
Main Board
300002000765
1

34
Electric Box Cover Sub-Assy
01404922
1

35
Electric Box Assy
100002067408
1

36
Cover of pass 
01254012
1

37
Connecting Cable
4002052318 
1

38
Connecting Cable
4002054026 
1

39
Remote Controller
305001000125
1

Above data is subject to change without notice.。

58
Installation and Maintenance

Service Manual

Qty
GVH24AM-K6DNC7A/I

Sayfa 62

Service Manual

48K

34

7
8

1
2
4
6
3
5

30
31
33

32

27
29
26

24
25
28

37

21

36
35

22
23

38

39

41
40

16
17
18
19
20

9
10
11
12
13
15

14

42
43

The component picture is only for reference; please refer to the actual product.

59
Installation and Maintenance

Sayfa 63

NO.
Description
Part Code

Product Code
CH156N02500

1
Right Side Plate Sub-Assy
0130451801
1

2
Rear Plate Sub-Assy
01304290 
1

3
Right Air Guard
01364507
1

4
Top Cover Sub-Assy
000051000034
1

5
Left Air Guard
01364506
1

6
Left Side Plate Sub-Assy
0130451901
1

7
Evaporator Assy
01100100275
1

8
Air Guard Assy
01364509
1

9
Chassis
200148000005
1

10
Wire Clamp
01384201
1

11
Fan Motor
150104060057 
1

12
Water Tray Sub-Assy
12314811
1

13
Breakwater Sub-Assy
 01364154P
1

14
Protection Cover
20124062
1

15
Remote Control Panel Sub-assy
20903400001
3

16
Propeller Housing Sub-assy
12104058
1

17
Centrifugal Fan
10314401
1

18
Diversion Circle
10374435
1

19
Gasket
70414201 
1

20
Electric Box Cover Sub-Assy
01404388
1

21
Electric Box Assy
100002069209
1

22
Main Board
300002061447
1

23
Terminal Board
420001000002
1

24
Motor Cover
22244170
1

25
Stepping Motor
1521210104
1

26
Air Guide Bushing
1054420302
6

27
Guide Blade Lever
200235000004
1

28
Stepping Motor
15212115
1

29
Crank 1
10564204
1

30
Air Louver 1
200007000028
1

31
Air Louver 2
200007000029
5

32
Guide Louver
200004000023
6

33
Crankshaft of Guide Louver
1056420502
6

34
Air Outlet Panel Assy
000039000017
1

35
Display Sub-Assy
000057000046  
1

36
Display Board
300001000195 
1

37
Remote Controller
305001000125
1

38
Screw Cover
200005000006
2

39
Air Intake Panel Assy
209006000002
1

40
Filter (lower)
11124012
1

41
Filter Sub-assy(Upper)
111001000032
1

42
Connecting Cable
4002052319
1

43
Connecting Cable
4002054015 
1

Above data is subject to change without notice.

60
Installation and Maintenance

Service Manual

Qty
GVH48AL-K6DNC7A/I

Sayfa 64

Service Manual

10.2 Outdoor Unit

GVH24AM-K6DNC7A/O

7

8
9
10
11
12
13
14
16

6

5

4

3

2

1

22
23
24
25
26
27
28
15

The component picture is only for reference; please refer to the actual product.

61
Installation and Maintenance

17

18

19

20

21

Sayfa 65

NO.
Description
Part Code

Qty
GVH24AM-K6DNC7A/O
Product Code
CH156W02400
1
Front Grill
22413045
1
2
Front Panel
01535013P
1
3
Axial Flow Fan
10335008
1
4
Fan Motor
1501506402
1
5
Electric Box Assy
100002066933 
1
6
Main Board
300027060927 
1
7
Terminal Board
422000060009 
1
8
Handle
26233053
1
9
Left Side Plate
01305093P
1
10
Supporting Board(Condenser)
01795031
1
11
Coping
012049000007P
1
12
Motor Support Sub-Assy
01705067
1
13
Condenser Assy
011002000244 
1
14
Rear Grill
01475020
1
15
Drainage Connecter
06123401
1
16
Temperature Sensor
3900030902
1
17
Electronic Expansion Valve assy
030174000041 
1
18
4-Way Valve Assy
030152000318 
1
19
Right Side Plate
0130509001P
1
20
Valve Support Sub-Assy
01705046P
1
21
Handle
26233053
1
22
Valve Cover
22245002
1
23
Cut off Valve
07130239 
1
24
Cut off Valve
07133844
1
25
Compressor and Fittings
009001000195
1
26
Clapboard Sub-Assy
01235081
1
27
Drainage hole Cap
06813401
1
28
Chassis Sub-assy
01205816P
1

Above data is subject to change without notice.

62
Installation and Maintenance

Service Manual

Sayfa 66

Service Manual

GVH48AL-K6DNC7A/O

The component picture is only for reference; please refer to the actual product.

63
Installation and Maintenance

Sayfa 67

NO.
Description
Part Code

Qty
GVH48AL-K6DNC7A/O
Product Code
CH156W02500
1
Front Grill
01572800003
1
2
Cabinet
012022000003
1
3
Diversion Circle
10474100003
1
4
Axial Flow Fan
1043410000801
1
5
Front Side Plate
012050000007
1
6
Drainage hole Cap
76715005
3
7
Drainage Joint
26113009
1
8
Compressor and Fittings
009001060077
1
9
Motor Support Sub-Assy
017012060034
1
10
Motor Support
012048060023
1
11
Brushless DC Motor
150104060013
1
12
4-Way Valve Assy
030152060458
1
13
Pressure Protect Switch
46020007
1
14
Pressure Protect Switch
4602000603
1
15
Valve Support Sub-Assy
017104000021
1
16
Cut-off valve 5/8
07103030
1
17
Cut off Valve 3/8
07130209
1
18
Handle
2690410001603
2
19
Rear Side Plate
012076000021
1
20
Electric Expand Valve Fitting
072002060023
1
21
Electric Expansion Valve Sub-Assy
030026060232
1
22
Chassis Sub-assy
017000060533
1
23
Clapboard
012051060978
1
24
Condenser Assy
011002061095
1
25
Rear Grill
01574100014 
1
26
Mounting Plate
200139060032
1
27
Electric Box Assy
100002067267
1
28
Electric Box Cover
012020060532
1
29
Main Board
300027060925
1
30
Coping
01264100052
1
31
Electric Box Sub-Assy
017007062069
1
32
Module Support
200145060004
1
33
Radiator
430034060083
1
34
Electric Box Assy 2
100002068603
1
35
Mounting Plate
200139060031
1
36
Filter Board
300020060064
1
37
Electric Component Mounting Plate
012064060815
1
38
Terminal Board
420001000002
1
39
Terminal Board
422000060003
1
40
Cover of Reactor Box
012120060010
1
41
Left Side Plate
012055000007
1
42
PFC Inductance
34003206000402
1
43
Reactor Box
012119060019
1

Above data is subject to change without notice.

64
Installation and Maintenance

Service Manual

Sayfa 68

Service Manual

11. Removal Procedure

Caution: discharge the refrigerant completely before removal.

11.1 Removal Procedure of Indoor Unit

24K

Procedure
Step

1.Outside view of indoor unit

2.Remove the big front panel sub-assy

Open the screw cover, use screwdriver 

to remove the screws at both side of 

big front panel sub-assy

air-in panel, push the big front panel 

upwards and then separate the connector 

connected to the connection wire of 

display and then remove the big front 

panel.

65
Installation and Maintenance

screw cover

screw

Sayfa 69

Procedure
Step

3.Remove display box sub-assy
screw

Take out the connection wire of display 

from the wire groove, remove the fixing 

screws of display box sub-assy, and then 

remove the display box sub-assy.

4. Remove air-in panel sub-assy

Remove two screws on the air-in panel 

sub-assy. 

Open the air-in panel along the arrow 

direction and then remove the air-in panel. 

5.Remove filter sub-assy

Extend your hands into grooves at both 

sides, pull it outwards and then draw out 4 

filters.

66
Installation and Maintenance

Service Manual

display box sub-assy

big front panel 

sub-assy

screw

air-in panel sub-assy

filter sub-assy

Sayfa 70

Service Manual

Procedure
Step

6.Remove electric box and wire-passing groove sub-assy

Remove the four screws fixing the electric 
box cover and then remove the electric box 
cover; disconnect the wiring terminal of each 
electronic components and then remove 
related electronic components according to 
your requirements;
1.Remove the two screws fixing the electric 
box assy and then lift the electric box assy 
outwards to remove it;
2.Remove the four screws fixing the cover of 
wire-crossing groove and then remove the 
cover of wire-crossing groove;
3.Remove the four screws fixing the wire-
crossing groove and then remove the wire-
crossing groove sub-assy.

7.Remove air-outlet panel

Remove the three screws at the top and 
two screws at the lower part of air outlet 
panel and screws in the screw covers 
at two sides; push the air outlet panel 
upwards slightly to remove the air outlet 
panel assy.

67
Installation and Maintenance

electric box assy

electric box cover

screws

wire-crossing
groove cover

wire-crossing groove

screws

screws

air-outlet panel

screws

Sayfa 71

Procedure
Step

8.Remove upper cover, horizontal louver, swing board

a.Remove 2 screws at the upper part of 

the upper cover and two screws at the 

back side of the air-outlet panel.

b.After removing the air-guiding connecting 

robe, and then pull the horizontal louver 

outwards to remove it. 

c.After removing the air swing connection 

rod, pull the swing board inwards to 

remove it.

9.Remove swing motor and air-guide motor

a.Remove screws used for fixing the air-

guide motor and the remove the air-guide 

motor.

b.Remove screws used for fixing the 

motor cover, remove the motor cover and 

then remove the swing motor. 

10.Remove wind board

Remove 11 screws used for fixing the wind 

board and then remove the wind board.

68
Installation and Maintenance

Service Manual

swing board

upper cover

screw

horizontal  louver

air swing 
connecting rod

air-guiding connecting rod

swing motor

screw

air-guide motor
motor cover

screw

wind board

Sayfa 72

Service Manual

Procedure
Step

11.Remove top cover

Remove 5 screws used for fixing the top 

cover, pull it upwards and then remove the 

top cover.
top cover

12.Remove evaporator

Remove 4 screws used for fixing the top 

connection board and lower connection 

board of evaporator and 2 screws used 

for fixing the side plate, pull left and right 

side plates outwards slightly and take 

out evaporator, baffle board and water 

tray. After the evaporator is removed, 

remove left and right wind boards on the 

evaporator and the baffle board.

69
Installation and Maintenance

screw

screw

screw

evaporator

Sayfa 73

Procedure
Step

13.Remove propeller housing, centrifugal blade and motor

a.Remove 3 screws used for fixing the 

press plate of propeller housing, and then 

take out the pressure plate of propeller 

housing.

b.Rotate the diversion loop to a certain 

position in the clockwise direction and 

then take out the diversion loop,

c.Remove 9 screws used for fixing the 

propeller housing and then take out the 

propeller housing.

d.Use wrench to remove the nuts used for 

fixing the centrifugal blade and then pull 

the centrifugal blade outwards.

e.Take out the centrifugal blade.

f.Remove 4 screws fixing the motor and 2 

screws fixing the wire-pressing late, and 

then remove the motor.

14.Remove chassis

Remove 9 screws, pull it downwards and 

then remove the chassis.

70
Installation and Maintenance

Service Manual

propeller housing

diversion loop

press plate of propeller 

housing

motor

centrifugal blade

wire-pressing plate

chassis

Sayfa 74

Service Manual

Procedure
Step

15. Remove left and right side plates sub-assy

Remove screws on both plates, pull it to 

both sides respectively and then remove 

left and right side plates sub-assy. 
right side plate 

left side plate 

sub-assy

71
Installation and Maintenance

sub-assy

Sayfa 75

48K

Procedure
Step

1.Outside view of indoor unit

2.Remove air-in panel

Open the screw cover, use screwdriver 
to remove screws used for fixing the 
air-in panel at both sides, and then 
remove the air-in panel.

72
Installation and Maintenance

Service Manual

Screw
cover

Air - in
panel

Sayfa 76

Service Manual

Procedure
Step

3.Remove filter, middle air-in panel

Hold the buckle position at the upper 
part of the filter, and pull it upwards to 
draw out the filter.

a

b

Remove 2 screws at top part of the air-
in panel, pull the middle air-in panel 
upwards and then remove the middle 
air-in panel.

4.Remove electric box and wire-passing groove 
sub-assy

Remove 4 screws used for fixing the 
electric box cover, remove the electric 
box cover and then pull out the wiring 
terminals for each component.
At this time, you can remove related 
electriccomponents according to the 
needs;
Remove 9 screws used for fixing the 
electric box, pull the electric box outwards 
to remove it.
Remove 3 screws used for fixing the 
wirepassing groove, and then remove the 
wirepassing groove cover.
Remove 3 screws used for fixing the 
wirepassing groove and then remove 
the wirepassing groove sub-assy

73
Installation and Maintenance

Buckle

Filter

Middle air-in panel

Electric box

Electric box cover

Screw

Wire-passing 
groove cover
Wire-passing 
groove

Screw

Sayfa 77

Procedure
Step

5.Remove air-out panel
Screw

Remove 3 screws at the top part of the 
air-out panel, 2 screw at the lower part 
and screws under the screw cover,
push the air-output panel upwards 
slightly and then remove the air-output 
panel.

6.Remove big front panel sub-assy

Remove 2 screws at the lower part, and 
then pull the big front panel sub-assy 
downwards slightly to remove it.

74
Installation and Maintenance

Service Manual

Air-out
panel

Screw

Big front panel sub-assy

Sayfa 78

Service Manual

Procedure
Step

7.Remove display box

Big front panel sub-assy
Display box sub-assy
Take out the display connection wire 
from the wire groove, remove 2 screw at 
the back of the display cover and then 
remove the display cover sub-assy.

8.Remove upper cover, air-outlet foam, guide louver, 
swing blade

Hold both end of the foam, and then remove 
the air-outlet foam;
Remove 2 screws at the upper part of 
the upper cover and 2 screws at the back 
side,and then the upper cover can be 
removed.
Remove the air-guide connection rod and 
then pull the guide louver outwards to 
remove it.
When the swing connection rod is removed, 
pull the swing blade outwards to remove it.

a

b

c

d

9.Remove swing motor and air-guide motor

Remove screws used for fixing the air 
guide motor, and then the air guide motor 
can be removed.

a

Remove screws used for fixing the motor 
cover, remove the motor cover and then 
the swing motor can be removed.

b

75
Installation and Maintenance

Upper 
cover
Swing 
blade

Air-out foam

Swing Lever

Guide 
louver Air-guide 

connection rod

Swing motor

Air-guide louver

Screw

Motor cover

Screw

Sayfa 79

Procedure
Step

10.Remove air damper

Remove 10 screws used for fixing the
air damper, and then the air damper
can be removed.

11.Remove electric heating part

Remove 4 screws on the protective grille 
and then remove the protective grille;

Remove 4 screws on the electric heating 
part and then remove the electric heating 
part.

76
Installation and Maintenance

Service Manual

Air damper

Air damper

Air damper

Sayfa 80

Service Manual

Procedure
Step

12.Remove top cover

Remove 7 screws on the top cover,
and then pull the top cover upwards 
to remove it.

13.Remove evaporator

Remove 3 screws on the evaporator, 2 
screw at the middle part and 2 screws 
at the lower part. Pull left and right side 
plates outwards slightly and then take out 
the evaporator, baffle board and water 
tray. 
When the evaporator is removed, the left 
and the right air damper and the baffle 
board of the evaporator can be removed.

77
Installation and Maintenance

Screw

Top cover

Screw

Water
tray

Evaporator

Sayfa 81

Procedure
Step

14.Remove propeller housing, centrifugal 
blade and motor

Remove 3 screws used for fixing the press 
plate of propeller housing and then remove 
the press plate of propeller housing;

a

Rotate the guide loop to a certain position 
along the clockwise direction, and then
remove the guide loop;

b

Remove 9 screws used for fixing the
propeller housing, and then remove the
propeller housing;

c

Use wrench to twist off the nuts used for
fixing the centrifugal chiller and then pull 
the centrifugal blade outwards;

d

e

Remove the centrifugal blade;

Remove 4 nuts used for fixing the motor 
and 2 screws used for fixing the wire-
pressing plate, and the remove the 
motor.

f

15.Remove chassis

After 9 screws are removed, pull the 
chassis downwards to remove it.

78
Installation and Maintenance

Service Manual

Propeller housing

Guide 
loop

Motor

Centrifugal blade

Press plate of 
propeller housing

Wire-pressing plate

Chassis

Sayfa 82

Service Manual

Procedure
Step

16.Remove left and right side plate sub-assys

Remove screws at both sides, pull 
them to both sides respectively and 
then left and right plate sub-assys 
can be removed.

79
Installation and Maintenance

Right side plate sub-assy

Left side plate 
sub-assy

Sayfa 83

11.2 Removal Procedure of Outdoor Unit

Warning       Be sure to wait for a minimum of 10 minutes after
                     turning off all power supplies before disassembly.

24K

Steps
Procedure

1. Remove big handle,valve cover and top cover

Remove the screw connecting the big handle and 
right side plate, and then remove the big handle.
Remove the screw connecting the valve cover and 
right side plate, and then remove the valve cover.

Remove the screws connecting the top cover with 
outer case, right side plate and left side plate; lift 
the top cover upwards to remove it.

2. Remove grille and outer case

grille
Remove the 4 screws connecting the grille and 
outer case, and then remove the panel grille.

80
Installation and Maintenance

Service Manual

handle

valve

top panel

Sayfa 84

Service Manual

Steps
Procedure

Remove the screws connecting the outer case with 
motor support, isolation plate and chassis; lift the 
outer case upwards; loosen the clasps of outer 
case with right side plate and left side plate, and 
then remove the outer case.

3. Remove right&left side plate

Remove the screws connecting the right side plate 
with electric box assy, valve support, chassis and 
condenser side plate, and then remove the right 
side plate.

Remove the screws connecting the  left side plate
with chassis, and then remove the  left side plate.

81
Installation and Maintenance

outer case

right side plate

 left side plate

Sayfa 85

Steps
Procedure

4. Remove axial flow blade

Remove the nut fixing axial flow blade and then 
remove the blade.

Remove the 6 screws fixing the motor and then 
remove the motor.
Remove the 2 screws connecting the motor support 
and chassis, and then loosen the stopper to remove 
the motor support.

5. Remove electric box

Remove the screws fixing the electric box sub-assy;
loosen the wire bundle; pull out the wiring terminals 
and then pull the electric box upwards to remove it.

82
Installation and Maintenance

Service Manual

axial flow fan

motor support

fan motor

electric box

Sayfa 86

Service Manual

Steps
Procedure

6. Remove the soundproof sponge

Tear off the sticking stripe and then remove the 
soundproof sponge.

7. Remove isolation plate

Remove the 2 screws connecting the isolation plate 
and condenser side plate; remove the 3 screws 
connecting the isolation plate and chassis, and then 
remove the isolation plate.

8. Remove 4-way valve assy

Unsolder the welding joints connecting the 4-way 
valve assy with capillary sub-assy, compressor and 
condenser; remove the 4-way valve.
Note:
Before unsoldering the welding joint, wrap the 4-way 
valve with a wet cloth completely to avoid damage to 
the valve caused by high temperature.

83
Installation and Maintenance

soundproof sponge

 isolation plate 

4-way valve assy

Sayfa 87

Steps
Procedure

9. Remove compressor

Remove the 3 foot nuts fixing compressor and then 
lift the compressor upwards to remove the 
compressor and damping cushion.
Note:
Keep the ports of discharge pipe and suction pipe 
from foreign objects.

10. Remove condenser sub-assy

Remove the screws connecting the support 
(condenser) and condenser assy,and then remove 
the support(condenser).

Remove the 2 screws fixing the condenser and 
chassis, and then lift the condenser upwards to 
remove it.

84
Installation and Maintenance

Service Manual

compressor

support

condenser 

sub-assy

chassis subassy

Sayfa 88

Service Manual

48K

Steps
Procedure

1. Remove top cover

Outside view of oudoor unit

Remove the screws connecting the top cover with 
outer case, right side plate and left side plate; lift 
the top cover upwards to remove it.

2. Remove the rear grille

Remove the tapping screws connecting the 

back grille with the back-side plate, the front 

case and the chassis. Remove the back 

grille.  

85
Installation and Maintenance

top panel

rear grille

screws

screws

Sayfa 89

Steps
Procedure

4. Remove the front side plate

ate
Remove the 2 tapping screws fixing the 

front side plate. Take the front side plate

outward to remove it. 

5. Remove the electric box assy 2 

Remove the 2 screws connecting the electric box 
assy 2  and then remove the electric box assy 2 .  

6. Remove the rear side plate sub-assy

Remove the screws connecting the rear side plate 
sub-assy and then remove the rear side plate sub
-assy .  

86
Installation and Maintenance

Service Manual

front side pl

screws

screws

electric box assy 2 

rear side plate sub-assy

screws

screws

Sayfa 90

Service Manual

Steps
Procedure

7. Remove the electric box assy and electric box cover 

a.Open the screws fixing the electric box cover and 
then remove the electric box cover.
b.Disconnect the connection wire of motor, compre-
ssor, temperature sensor and PFC inductor; remove 
the ground wire screw in the wiring board and the 
screws fixing the electric box, and then remove the 
electric box assy.
c.Remove the screws fixing the electric box cover 
and then remove the electric box cover.
d.Disconnect the connection wire of PFC inductor 
and then remove the reactor box sub-assy.

8. Remove grille and outer case

Remove the 4 screws connecting the grille and 
outer case, and then remove the panel grille.

Remove the screws connecting the outer case with 
motor support, isolation plate and chassis; lift the 
outer case upwards; loosen the clasps of outer 
case with right side plate and left side plate, and 
then remove the outer case.

9. Remove axial flow blade

Remove the nut fixing axial flow blade and then 
remove the blade.

87
Installation and Maintenance

electric box cover
reactor sub-assy

cover of reactor box

electric box assy

outer case

screws

grille

screws

screws

axial flow fan

Sayfa 91

Steps
Procedure

10. Remove the fan motor and motor support 
motor support

Remove the screws fixing the fan motor and then 
remove the fan moto.
Remove the 2 screws connecting the motor support 
and chassis, and then loosen the stopper to remove 
the motor support.

11. Remove 4-way valve assy and electric expansion valve

 sub-assy

Unsolder the welding joints connecting the 4-way 
valve assy with electric expansion valvesub-assy,
compressor and condenser; remove the 4-way 
valve. 
Note:
Before unsoldering the welding joint, wrap the 4-way 
valve with a wet cloth completely to avoid damage to 
the valve caused by high temperature.

12. Remove valve support sub-assy

Twist off the screws connecting
valve support sub-assy and chassis
and then remove the valve support 
sub-assy.

88
Installation and Maintenance

Service Manual

fan motor

screws

4-way valve assy

electric expansion 
valve sub-assy

valve

 valve support sub-assy

Sayfa 92

Service Manual

Steps
Procedure

13. Remove compressor

Remove the 3 foot nuts fixing compressor and then 
lift the compressor upwards to remove the 
compressor and damping cushion.
Note:
Keep the ports of discharge pipe and suction pipe 
from foreign objects.

89
Installation and Maintenance

compressor

Sayfa 93

Appendix:

Appendix 1: Reference Sheet of Celsius and Fahrenheit

Set temperature
Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32

 Fahrenheit 

 Fahrenheit 

display 
temperature

Fahrenheit

display 
temperature

Fahrenheit

（℉）
Celsius（℃）

（℉）
Celsius（℃）

（℉）

（℉）

61
60.8
16
69/70
69.8
21
78/79
78.8
26
62/63
62.6
17
71/72
71.6
22
80/81
80.6
27
64/65
64.4
18
73/74
73.4
23
82/83
82.4
28
66/67
66.2
19
75/76
75.2
24
84/85
84.2
29
68
68
20
77
77
25
86
86
30

Ambient temperature

 Fahrenheit 

 Fahrenheit 

display 
temperature

Fahrenheit

display 
temperature

Fahrenheit

（℉）
Celsius（℃）

（℉）
Celsius（℃）

（℉）

（℉）

32/33
32
0
55/56
55.4
13
79/80
78.8
26
34/35
33.8
1
57/58
57.2
14
81
80.6
27
36
35.6
2
59/60
59
15
82/83
82.4
28
37/38
37.4
3
61/62
60.8
16
84/85
84.2
29
39/40
39.2
4
63
62.6
17
86/87
86
30
41/42
41
5
64/65
64.4
18
88/89
87.8
31
43/44
42.8
6
66/67
66.2
19
90
89.6
32
45
44.6
7
68/69
68
20
91/92
91.4
33
46/47
46.4
8
70/71
69.8
21
93/94
93.2
34
48/49
48.2
9
72
71.6
22
95/96
95
35
50/51
50
10
73/74
73.4
23
97/98
96.8
36
52/53
51.8
11
75/76
75.2
24
99
98.6
37
54
53.6
12
77/78
77
25

Appendix 2: Configuration of Connection Pipe

1.Standard length of connection pipe（More details please refer to the specifications.)
2.Min. length of connection pipe is 3m.
3.Max. length of connection pipe and max. high difference.（More details please refer to the specifications.)
4.The additional refrigerant oil and refrigerant charging required after prolonging connection pipe
● After the length of connection pipe is prolonged for 10m at the basis of standard length, you should add 5ml of refrigerant 
oil for each additional 5m of connection pipe.
● The calculation method of additional refrigerant charging amount (on the basis of liquid pipe):
● Basing on the length of standard pipe, add refrigerant according to the requirement as shown in the table. The additional 
refrigerant charging amount per meter is different according to the diameter of liquid pipe. See the following sheet.
● Additional refrigerant charging amount = prolonged length of liquid pipe X additional refrigerant charging amount per meter 

Additional refrigerant charging amount for R22, R407C, R410A and R134a
Diameter of connection pipe
Outdoor unit throttle
Liquid pipe(mm)
Gas pipe(mm)
Cooling only(g/m)
Cooling and heating(g/m)
Ф6
Ф9.5 or Ф12
15
20
Ф6 or Ф9.5
Ф16 or Ф19
15
50
Ф12
Ф19 or Ф22.2
30
120
Ф16
Ф25.4 or Ф31.8
60
120
Ф19
/
250
250
Ф22.2
/
350
350

90
Installation and Maintenance

Service Manual

 Fahrenheit 

display 
temperature

Fahrenheit

（℉）
Celsius（℃）

（℉）

 Fahrenheit 

display 
temperature

Fahrenheit

（℉）
Celsius（℃）

（℉）

Sayfa 94

Service Manual

Appendix 3: Pipe Expanding Method

Note:

Improper pipe expanding is the main cause of refrigerant leakage.Please 
expand the pipe according to the following steps:

A:Cut the pip
● Confirm the pipe length according to the distance of indoor unit and outdoor unit.
● Cut the required pipe with pipe cutter.

B:Remove the burrs
● Remove the burrs with shaper and prevent the burrs from getting into the pipe.

C:Put on suitable insulating pipe

D:Put on the union nut

● Remove the union nut on the indoor connection pipe and outdoor valve; install

the union nut on the pipe.

E:Expand the port
● Expand the port with expander.

Note:

● "A" is different according to the diameter, please refer to the sheet below:

Outer diameter(mm)
A(mm)
Max
Min
Ф6 - 6.35 (1/4")
1.3
0.7
Ф9.52 (3/8”)
1.6
1.0
Ф12 - 12.70 (1/2”)
1.8
1.0
Ф16 - 15.88 (5/8”)
2.4
2.2

F:Inspection
● Check the quality of expanding port. If there is any blemish, expand the 
port again according to the steps above.

91
Installation and Maintenance

Pipe

Pipe cutter

Leaning
Uneven
Burr

Pipe

Shaper

Downwards

Union pipe

Pipe

Hard
mold

Expander

Pipe

Smooth surface

Improper expanding

leaning
damaged

crack
uneven
thickness

surface

The length is equal

Sayfa 95

Appendix 4: List of Resistance for Temperature Sensor

 Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K)

Temp(

oC)
Resistance(kΩ)
Temp(

-19
138.1
20
18.75
59
3.848
98
1.071

-18
128.6
21
17.93
60
3.711
99
1.039

-17
121.6
22
17.14
61
3.579
100
1.009

-16
115
23
16.39
62
3.454
101
0.98

-15
108.7
24
15.68
63
3.333
102
0.952

-14
102.9
25
15
64
3.217
103
0.925

-13
97.4
26
14.36
65
3.105
104
0.898

-12
92.22
27
13.74
66
2.998
105
0.873

-11
87.35
28
13.16
67
2.896
106
0.848

-10
82.75
29
12.6
68
2.797
107
0.825

-9
78.43
30
12.07
69
2.702
108
0.802

-8
74.35
31
11.57
70
2.611
109
0.779

-7
70.5
32
11.09
71
2.523
110
0.758

-6
66.88
33
10.63
72
2.439
111
0.737

-5
63.46
34
10.2
73
2.358
112
0.717

-4
60.23
35
9.779
74
2.28
113
0.697

-3
57.18
36
9.382
75
2.206
114
0.678

-2
54.31
37
9.003
76
2.133
115
0.66

-1
51.59
38
8.642
77
2.064
116
0.642

0
49.02
39
8.297
78
1.997
117
0.625

1
46.6
40
7.967
79
1.933
118
0.608

2
44.31
41
7.653
80
1.871
119
0.592

3
42.14
42
7.352
81
1.811
120
0.577

4
40.09
43
7.065
82
1.754
121
0.561

5
38.15
44
6.791
83
1.699
122
0.547

6
36.32
45
6.529
84
1.645
123
0.532

7
34.58
46
6.278
85
1.594
124
0.519

8
32.94
47
6.038
86
1.544
125
0.505

9
31.38
48
5.809
87
1.497
126
0.492

10
29.9
49
5.589
88
1.451
127
0.48

11
28.51
50
5.379
89
1.408
128
0.467

12
27.18
51
5.197
90
1.363
129
0.456

13
25.92
52
4.986
91
1.322
130
0.444

14
24.73
53
4.802
92
1.282
131
0.433

15
23.6
54
4.625
93
1.244
132
0.422

16
22.53
55
4.456
94
1.207
133
0.412

17
21.51
56
4.294
95
1.171
134
0.401

18
20.54
57
4.139
96
1.136
135
0.391

19
19.63
58
3.99
97
1.103
136
0.382

92
Installation and Maintenance

Service Manual

oC)
Resistance(kΩ)
Temp(

oC)
Resistance(kΩ)
Temp(

oC)
Resistance(kΩ)

Sayfa 96

Service Manual

Resistance Table of Tube Temperature Sensors for Outdoor and Indoor(20K)

Temp(

oC)
Resistance(kΩ)
Temp(

oC)
Resistance(kΩ)
Temp(

oC)
Resistance(kΩ)
Temp(

-19
181.4
20
25.01
59
5.13
98
1.427

-18
171.4
21
23.9
60
4.948
99
1.386

-17
162.1
22
22.85
61
4.773
100
1.346

-16
153.3
23
21.85
62
4.605
101
1.307

-15
145
24
20.9
63
4.443
102
1.269

-14
137.2
25
20
64
4.289
103
1.233

-13
129.9
26
19.14
65
4.14
104
1.198

-12
123
27
18.13
66
3.998
105
1.164

-11
116.5
28
17.55
67
3.861
106
1.131

-10
110.3
29
16.8
68
3.729
107
1.099

-9
104.6
30
16.1
69
3.603
108
1.069

-8
99.13
31
15.43
70
3.481
109
1.039

-7
94
32
14.79
71
3.364
110
1.01

-6
89.17
33
14.18
72
3.252
111
0.983

-5
84.61
34
13.59
73
3.144
112
0.956

-4
80.31
35
13.04
74
3.04
113
0.93

-3
76.24
36
12.51
75
2.94
114
0.904

-2
72.41
37
12
76
2.844
115
0.88

-1
68.79
38
11.52
77
2.752
116
0.856

0
65.37
39
11.06
78
2.663
117
0.833

1
62.13
40
10.62
79
2.577
118
0.811

2
59.08
41
10.2
80
2.495
119
0.77

3
56.19
42
9.803
81
2.415
120
0.769

4
53.46
43
9.42
82
2.339
121
0.746

5
50.87
44
9.054
83
2.265
122
0.729

6
48.42
45
8.705
84
2.194
123
0.71

7
46.11
46
8.37
85
2.125
124
0.692

8
43.92
47
8.051
86
2.059
125
0.674

9
41.84
48
7.745
87
1.996
126
0.658

10
39.87
49
7.453
88
1.934
127
0.64

11
38.01
50
7.173
89
1.875
128
0.623

12
36.24
51
6.905
90
1.818
129
0.607

13
34.57
52
6.648
91
1.736
130
0.592

14
32.98
53
6.403
92
1.71
131
0.577

15
31.47
54
6.167
93
1.658
132
0.563

16
30.04
55
5.942
94
1.609
133
0.549

17
28.68
56
5.726
95
1.561
134
0.535

18
27.39
57
5.519
96
1.515
135
0.521

19
26.17
58
5.32
97
1.47
136
0.509

93
Installation and Maintenance

oC)
Resistance(kΩ)

Sayfa 97

Resistance Table of Discharge Temperature Sensor for Outdoor(50K)

oC)
Resistance(kΩ)
Temp(

Temp(

-29
853.5
10
98
49
18.34
88
4.75

-28
799.8
11
93.42
50
17.65
89
4.61

-27
750
12
89.07
51
16.99
90
4.47

-26
703.8
13
84.95
52
16.36
91
4.33

-25
660.8
14
81.05
53
15.75
92
4.20

-24
620.8
15
77.35
54
15.17
93
4.08

-23
580.6
16
73.83
55
14.62
94
3.96

-22
548.9
17
70.5
56
14.09
95
3.84

-21
516.6
18
67.34
57
13.58
96
3.73

-20
486.5
19
64.33
58
13.09
97
3.62

-19
458.3
20
61.48
59
12.62
98
3.51

-18
432
21
58.77
60
12.17
99
3.41

-17
407.4
22
56.19
61
11.74
100
3.32

-16
384.5
23
53.74
62
11.32
101
3.22

-15
362.9
24
51.41
63
10.93
102
3.13

-14
342.8
25
49.19
64
10.54
103
3.04

-13
323.9
26
47.08
65
10.18
104
2.96

-12
306.2
27
45.07
66
9.83
105
2.87

-11
289.6
28
43.16
67
9.49
106
2.79

-10
274
29
41.34
68
9.17
107
2.72

-9
259.3
30
39.61
69
8.85
108
2.64

-8
245.6
31
37.96
70
8.56
109
2.57

-7
232.6
32
36.38
71
8.27
110
2.50

-6
220.5
33
34.88
72
7.99
111
2.43

-5
209
34
33.45
73
7.73
112
2.37

-4
198.3
35
32.09
74
7.47
113
2.30

-3
199.1
36
30.79
75
7.22
114
2.24

-2
178.5
37
29.54
76
7.00
115
2.18

-1
169.5
38
28.36
77
6.76
116
2.12

0
161
39
27.23
78
6.54
117
2.07

1
153
40
26.15
79
6.33
118
2.02

2
145.4
41
25.11
80
6.13
119
1.96

3
138.3
42
24.13
81
5.93
120
1.91

4
131.5
43
23.19
82
5.75
121
1.86

5
125.1
44
22.29
83
5.57
122
1.82

6
119.1
45
21.43
84
5.39
123
1.77

7
113.4
46
20.6
85
5.22
124
1.73

8
108
47
19.81
86
5.06
125
1.68

9
102.8
48
19.06
87
4.90
126
1.64

94
Installation and Maintenance

Service Manual

oC)
Resistance(kΩ)
Temp(

oC)
Resistance(kΩ)
Temp(

oC)
Resistance(kΩ)

Sayfa 98

GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070
Tel: (+86-756) 8522218         
Fax: (+86-756) 8669426
E-mail: gree@gree.com.cn   www.gree.com

HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED

Add: Unit 2612,26/F.,Miramar Tower 132 Nathan Road,TST,Kowloon,HK 
Tel: (852) 31658898         Fax: (852) 31651029

For product improvement, specifications and appearance in this manual are subject to change without prior notice.

JF00304138