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Change for life Service Manual GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
Table of Contents Part Ⅰ: Technical Information................................... 2 1. Summary.............................................................................. 2 2. Specifications...................................................................... 3 2.1 Specification Sheet..................................................................................................3 2.2 Capacity Variation Ratio According to Temperature....................................5 2.3 Cooling and Heating Data Sheet in Rated Frequency.................................5 3. Outline Dimension Diagram............................................... 6 3.1 Indoor Unit...................................................................................................................6 3.2 Outdoor Unit...............................................................................................................7 4. Refrigerant System Diagram.............................................. 8 5. Electrical Part...................................................................... 9 5.1 Wiring Diagram..........................................................................................................9 5.2 PCB Printed Diagram.............................................................................................11 6. Function and Control........................................................ 13 6.1 Function Buttons of Air Conditioner................................................................13 6.2 Remote Controller Introduction.........................................................................15 6.3 GREE+ App Operation Manual...........................................................................19 6.4 Ewpe Smart App Operation Manual.................................................................20 6.4 Brief Description of Models and Functions...................................................21 Part Ⅱ: Installation and Maintenance ................. 23 7. Notes for Installation and Maintenance.......................... 23 8. Installation......................................................................... 30 8.1 Installation Dimension Diagram........................................................................30 8.2 Installation Parts-checking ................................................................................32 8.3 Selection of Installation Location.....................................................................32 8.4 Electric Connection Requirement.....................................................................32 Table of Contents
8.5 Installation of Indoor Unit....................................................................................33 8.6 Installation of Outdoor unit.................................................................................34 8.7 Vacuum Pumping and Leak Detection............................................................36 8.8 Check after Installation and Test operation..................................................37 9. Maintenance...................................................................... 38 9.1 Error Code List........................................................................................................38 9.2 Procedure of Troubleshooting...........................................................................43 9.3 Troubleshooting for Normal Malfunction.......................................................55 10. Exploded View and Parts List........................................ 57 10.1 Indoor Unit..............................................................................................................57 10.2 Outdoor Unit...........................................................................................................59 11. Removal Procedure......................................................... 61 11.1 Removal Procedure of Indoor Unit.................................................................61 11.2 Removal Procedure of Outdoor Unit.............................................................66 Appendix............................................................................ 72 Appendix 1: Reference Sheet of Celsius and Fahrenheit...............................72 Appendix 2: Configuration of Connection Pipe..................................................72 Appendix 3: Pipe Expanding Method.....................................................................73 Appendix 4: List of Resistance for Temperature Sensor................................74 Table of Contents
1. Summary Indoor Unit: GVH32ALXH-K6DNC7A/I GWH32QFXH-K6DNB2A/O Remote Controller: YAP1F11 2 Technical Information Outdoor Unit:
2. Specifications 2.1 Specification Sheet Model GVH32ALXH-K6DNC7A Rated Voltage V~ 220-240 Power Supply Rated Frequency Hz 50 Phases -- 1 Power Supply Mode -- Outdoor Cooling Capacity W 10000 Heating Capacity W 10300 Cooling Power Input W 2730 Heating Power Input W 3029 Cooling Current Input A 11.5 Heating Current Input A 13.5 Rated Input W 4200 Rated Cooling Current A 18 Rated Heating Current A 17 Air Flow Volume m Dehumidifying Volume L/h 5.00 EER W/W 3.66 COP W/W 3.40 AEER 3.73 ACOP 3.73 Application Area m Model GVH32ALXH-K6DNC7A/I Product Code CH156N05700 Fan Type Centrifugal Fan Diameter Length(D×L) mm Ф379×180.5 Cooling Speed r/min 600/560/530/500 Heating Speed r/min 600/560/530/500 Fan Motor Power Output W 150 Fan Motor RLA A / Fan Motor Capacitor μF / Evaporator Form -- Aluminum Fin-copper Tube Evaporator Pipe Diameter mm Ф7.94 Evaporator Row-fin Gap mm 3-1.5 Evaporator Coil Length (L×D×W) mm 472×62×836 Indoor Unit Swing Motor Model -- MP35AB/MP24TA Swing Motor Power Output W 2.5/1.5 Fuse Current A 5 Sound Pressure Level dB (A) 52/50/48/47 Sound Power Level dB (A) 64/62/60/59 Dimension (WXHXD) mm 587X1882X394 Dimension of Carton Box (LXWXH) mm 2150X735X530 Dimension of Package (LXWXH) mm 2153X738X545 Net Weight kg 57 Gross Weight kg 79.5 3 Technical Information 3/h 1850/1600/1450/1300 2 55-85
Outdoor Unit Model GWH32QFXH-K6DNB2A/O Outdoor Unit Product Code CB432W27300 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model QXFS-D280zX070 Compressor Oil / Compressor Type Rotary Compressor LRA. A 40.00 Compressor RLA A 4.90 Compressor Power Input W 2294 Compressor Overload Protector / Throttling Method Electron expansion valve Set Temperature Range ºC 16~30 Cooling Operation Ambient Temperature Range ºC -10~50 Heating Operation Ambient Temperature Range ºC -15~24 Condenser Form Aluminum Fin-copper Tube Condenser Pipe Diameter mm Ф7 Condenser Rows-fin Gap mm 3-1.4 Condenser Coil Length (LXDXW) mm 955X57.15X704 Fan Motor Speed rpm 850 Outdoor Fan Motor Power Output W 90 Unit Fan Motor RLA A 0.70 Fan Motor Capacitor μF / Outdoor Unit Air Flow Volume m Fan Type Axial-flow Fan Diameter mm 570 Defrosting Method Automatic Defrosting Climate Type T1 Isolation I Moisture Protection IPX4 Permissible Excessive Operating Pressure for the Discharge Side MPa 4.3 Permissible Excessive Operating Pressure for the Suction Side MPa 2.5 Sound Pressure Level (H/M/L) dB (A) 62 Sound Power Level (H/M/L) dB (A) 71 Dimension(WXHXD) mm 1000X746X427 Dimension of Carton Box (LXWXH) mm 1077X480X785 Dimension of Package(LXWXH) mm 1080X483X810 Net Weight kg 59.5 Gross Weight kg 64.5 Refrigerant R32 Refrigerant Charge kg 1.9 Connection Pipe Length m 5 Connection Pipe Gas Additional Charge g/m 40 Outer Diameter Liquid Pipe 1/4" Connection Outer Diameter Gas Pipe 5/8" Pipe Max Distance Height m 10 Max Distance Length m 25 Note: The connection pipe applies metric diameter. The above data is subject to change without notice. Please refer to the nameplate of the unit. 4 Technical Information 3/h 4500
2.2 Capacity Variation Ratio According to Temperature Heating Cooling 120 120 100 100 Capacity ratio(%) Capacity ratio(%) 80 80 60 60 Condition Indoor:DB27°C WB19°C Indoor air flow: Super High Pipe length:5m Conditions Indoor:DB20°C Indoor air flow:Super High 40 40 20 20 Pipe length:5m 0 0 -15 -10 -7 -5 7 6 -3 0 5 10 15 20 18 24 10 -10 -5 0 5 15 25 35 20 30 40 45 50 2.3 Cooling and Heating Data Sheet in Rated Frequency Cooling: Pressure of gas pipe connecting Inlet and outlet pipe temperature of Rated cooling condition(°C) (DB/WB) indoor and outdoor unit heat exchanger Fan speed of Fan speed of Model outdoor unit Indoor Outdoor P (MPa) T1 (°C) T2 (°C) indoor unit 27/19 35/24 32K 0.8~1.0 in:10~13 out:16~19 in:75~ 85 out:32~38 Super High High Heating: Pressure of gas pipe connecting Inlet and outlet pipe temperature of Rated heating condition(°C) (DB/WB) indoor and outdoor unit heat exchanger Fan speed of Fan speed of Model outdoor unit Indoor Outdoor P (MPa) T1 (°C) T2 (°C) indoor unit 20/- 7/6 32K 2.5~2.7 in:60~70 out:33~39 in:-2~0 out:10~13 Super High High 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. 5 Technical Information
3. Outline Dimension Diagram 3.1 Indoor Unit 6 Technical Information + : ' Model W H D 32K 587 1882 394
3.2 Outdoor Unit 369 746 427 395 Unit:mm 7 Technical Information 923 1000 610
4. Refrigerant System Diagram Indoor unit Suction Heat exchanger (evaporator) Heat Connection pipe specification: Liquid pipe:1/4" Gas pipe:5/8" 8 Technical Information Outdoor unit Gas pipe side Valve 4-Way valve Discharge Accumlator Compr r esso r) exchanger side Liquid pipe (condense Valve Electric expand valve Strainer Strainer COOLING HEATING
5. Electrical Part 5.1 Wiring Diagram ●Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name WH White GN Green CAP Jumper cap YE Yellow BN Brown COMP Compressor RD Red BU Blue Grounding wire YEGN Yellow/Green BK Black / / VT Violet OG Orange / / Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ● Indoor Unit TEMP. ROOM TEMP. TUBE DC-MOTOR SENSOR Note: Motor ground only applies to the iron shell motor. SENSOR UP-DOWN STEPPING LEFT-RIGHT M1 YEGN STEPPING MOTOR MOTOR PE θ θ M3 M2 MAGNETIC RING L2 RT1 RT2 MAGNETIC RING XT N SWING-UD SWING-LR DC-MOTOR L1 T-SENSOR BU BU OUTDOOR UNIT N(1) L1 BK BK AP1 COM 2 (COM-OUT) L1 PRINTED CIRCUIT BOARD L BN AC-L BN BN 3 REACTOR YEGN YEGN COM-DISPLAY RD BN PE L3 TERMINAL BLOCK X2 X1 AP4 YEGN (OPTIONAL) WIFI CONTACT PE PE AP3 CN42 COM-MAIN AP2 DISPLAY 600007064918 9 Technical Information
● Outdoor Unit COMP. OPTIONAL Please don't touch any terminal when the machine is running ,stopping or has been powered off for less than 30 minutes to prevent the risk of electric shock! OVERLOAD PROTECTOR COMP EXHAUST TEMP. OUTROOM TEMP. OUTTUBE U TEMP. SENSOR SENSOR SENSOR V W BU YE RD MAGNETIC SAT 15K 20K 50K RT1 RING L1 L1 L1 WH WH RT3 RT2 T-SENSOR (T-SEN) CN2 OVC-COMP MAGNETIC RING XT BU L2 BU PRINTED CIRCUIT BOARD AP1: INDOOR UNIT N(1) N L2 BK BK BN (DRED) (COM-IN) 2 COM-INNER L2 (DRED-COMMU) (DRED-DC) BN L(3) AC-L E FA DRED-COM DRED-POWER YEGN OFAN 4WAY YEGN TERMINAL PE BLOCK PE BU BN(BK) VT VT L N CN1 CN3 DRED CN4 4YV EKV YEGN YEGN M ELECTRONIC MAIN BOARD PE PE POWER EXPANSION VALVE 4-WAY FAN VALVE PE MOTOR OPTIONAL OPTIONAL OPTIONAL DRED MODULE 600007064715 OPTIONAL These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. 10 Technical Information
5.2 PCB Printed Diagram Indoor Unit 1 2 3 4 5 6 No. Name No. Name 1 Interface of live wire 6 Interface of earthing wire 2 Fuse 7 Connection needle stand of display board 3 Interface of communication wire for outdoor unit 8 Left & right swing interface 4 Interface of netural wire 9 Up & down swing interface 5 Motor interface of indoor unit 10 Needle stand of temperature sensor 11 Technical Information 10 7 8 9
Outdoor Unit 1 2 3 4 5 6 7 8 9 10 11 12 13 14 No. Name No. Name 1 Neutral wire 8 Terminal of high pressure protection 2 Grounding wire 9 Temperature sensor 3 Live wire 10 Overload interface of compressor 4 Communication wire 11 Terminal of electronic expansion valve 5 4-way valve 12 Terminal of DRED 6 Electric heating belt of chassis 13 E disk(Reserved) 7 Outdoor fan 14 Terminal of compressor wire 12 Technical Information
6. Function and Control 6.1 Function Buttons of Air Conditioner Buttons Name and Function 1 ON/OFF button 2 MODE button 3 FAN button 4 FUNCTION button 5 3 1 5 ON/OFF FAN 6 / button 2 4 MODE FUNC. 6 Introduction for icons on display screen of 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: For cooling only unit, pressing MODE button under FAN mode will skip heating mode and enter cooling mode.) This series unit adopts touch buttons. You only need to touch the buttons slightly. 3. FAN button 1. ON/OFF button Press this button and then fan speed can be selected and displayed in the sequence as below: ● Press this button to turn on or turn off the unit. (Note: Under (low) (medium) (high) X-FAN mode, press this button to turn on the unit directly.) (turbo) 2. MODE button (Note:Only low fan speed is available for dry mode. Fan speed ● Every time press this button, the mode will switchover in cycle can't be adjusted under dry mode. Turbo cannot be set in FAN among. mode.) COOLING DRY 4. FUNCTION button HEATING FAN Under on status, press Function button to switch between timer (Note: Cooling only unit won’t accept heating operation signal. and auxiliary heating function setting (auxiliary heating can be 13 Technical Information
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. 5. ▲ / ▼ button ● After each pressing of "▲" or "▼" button, set temperature will increase or decrease 1°C. Temperature adjustment range is 16°C~30°C. This button is invalid under 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. 6. / button ● Left and right swing: this button controls the left and right swing motor, single press it to switchover between ON and OFF. ● Up and down swing: this button controls the up and down swing motor, single press it to switchover between ON and OFF. Set upper and lower limit of temperature ● Under off status, hold “▲” button for 5s to set the upper limit of temperature and then the set upper limit temperature will flash; hold “▲” or “ ▼ ”button to adjust the upper limit of temperature and then the set upper limit temperature will be displayed for 3s. ● Under off status, hold “▼”button for 5s to set the lower limit of temperature and the set lower limit temperature will flash; hold “▲” or “▼ ”button to adjust the lower limit of temperature, and then the set lower. Note: 1.After setting upper/lower limit temperature, it's valid under cooling, heating, dry and fan modes. 2.The set lower limit temperature should be lower than the set 14 Technical Information upper limit temperature. 3.Upper temperature limit can be set only after the lower temperature limit has been set; lower temperature limit can be set only after the upper temperature limit has been set. 4.Note:If it needs to enter compulsive defrosting, freon recovery or adjustable memory function, resume the set upper/lower limit temperature to 16ºC-30ºC manually. This function is only available for some models. 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 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. Defrosting display When this indicator is on, it indicates the defrosting function is turned on. Dry display When this indicator is on, it indicates the dry mode is turned on. E-Heater display When this indicator is on, it indicates the E-heater function is turned on. (Only available for some heat pump unit) 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. Fan speed display Displays the fan speed. The fan speed is displayed as below: (low) (medium) (high) (turbo)
6.2 Remote Controller Introduction
Buttons on remote controller
1
7
8
2
9
4
3
10
5
6
7
9
13
10
14
11
12
15
Introduction for icons on display screen
only after turning it on.)
Operation mode
Auto mode
Cool mode
Dry mode
Fan mode
Heat mode
Set time
TIMER ON/TIMER OFF
Turbo fan speed
Quiet mode
X-FAN function
Introduction for buttons on remote controller
NOTE:
● 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 conditioner by using remote controller.
15
Technical Information
1
ON/OFF button
2
MODE button
3
FAN button
4
SAVE button
5
6
COOL button
HEAT button
button
button
SLEEP button
11
WiFi button
12
X-FAN button
button
8
13
P
14
LIGHT button
15
TIMER button
Set fan speed
(No
{
,
fan speed. It’s displayed
Send signal
battery power
This is a general remote controller.Some
models have this function while some
do not. Please refer to the actual models.
WiFi{
Child lock
Switch temperature displaying type on
the unit’s display
function
Left & right swing
Up & down swing
P
Sleep mode
● 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.
1. ON/OFF button
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.
2. MODE button
Press this button to select your required operation mode.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). Press "▲" or "▼"
button to adjust set temperature. Press "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(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. 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). Press "▲" or "▼"
button to adjust set temperature. Press "FAN" button to adjust
fan speed. Press "
" / "
" button to adjust fan blowing angle.
(Cooling only 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: 16~30°C
(61~86°F); Fan speed: auto, quiet speed, low speed, medium
speed, high speed, turbo speed.
3. FAN button
Pressing this button can set fan speed circularly as: auto (AUTO),
QUIET(
), low( ), medium(
), high(
), turbo(
).
● Under AUTO speed, air conditioner will select proper fan
speed automatically according to ex-factory setting.
● It’s Low fan speed under Dry mode.
● Turbo cannot be set in FAN mode.
4. SAVE button
Under cooling mode, press this button to start up or turn off
16
Technical Information
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.
5. ▲ / ▼ button
● Press "▲" or "▼" button once increase or decrease set
temperature 1°C (°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)
6. COOL button
● Press this button, unit will operate in cool mode.
7. HEAT button
● Press this button, unit will operate in heat mode.
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
and fixed-angle swing mode. "
" on the remote controller will
flash twice. 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) or 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 fixed-angle swing mode. "
" 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:
no display10. 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. 11. WiFi button Press "WiFi" button to turn on WiFi function, "WiFi" icon will be displayed on the remote controller; Hold "WiFi" button for 5s to turn off WiFi function and "WiFi" icon will disappear. Under off status, press "MODE" and "WiFi" buttons simultaneously for 1s, WiFi module will restore factory settings. ● This function is only available for some models. 12. X-FAN button Pressing this button in COOL or DRY mode, the icon " " is displayed and the 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. ● Having set X-FAN function on: After turning off the unit by pressing ON/OFF button indoor fan will continue running for about a few minutes. at low speed. In this period, press X-FAN button to stop indoor fan directly. ● 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 of “X-FAN” are displayed) or turn off (characters of “X-FAN” are not displayed) X-FAN function. 13. button function is for limiting power of the whole unit. Press this button, the controller will cercularly display as the following: ● Maximum power limited under the mode is lower than that of mode. ● If you want to cancel the power limiting function, press the button till the icon in remote controller is not displayed. ● When the remote controller is turned off, power limiting function is cancelled. If you want to activate the function, please repress this button. ● If the current power is lower than the maximum power of mode, then the power will not be limited after entering into such mode. ● For the model with one outdoor unit and two indoor units, if 17 Technical Information any one of indoor units enters into power limiting function, the outdoor unit will enter into the set limiting power mode of indoor unit; when two indoor units enter into power limiting mode, then the power of outdoor unit will be limited according to the lower power of the two indoor units. NOTE: ● This function is only available for some models. 14. LIGHT button Press this button to turn off display light on indoor unit. Press this button again to turn on display light. 15. TIMER button ● At ON status, press this button once can set TIMER OFF. The character of HOUR and OFF will flash. Press "▲" or "▼" button within 5s can adjust the time of 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 reach to your required time. After that, press "TIMER" button to confirm it. The character of HOUR and OFF won't flash again. 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 child lock function is on, " " icon is displayed on remote controller. If you operate the remote controller, the " " icon will blink three times without sending signal to the unit. blank No Setting Temperature display switchover function Under OFF status, press "▼" and " MODE" but tons simultaneously to switch temperature display between °C and °F. Auto clean function Under unit off status, hold "MODE" and "FAN" buttons simultaneously for 5s to turn on or turn off the auto clean function. When the auto clean function is turned on, indoor unit displays "CL" . During the auto clean process of evaporator, the unit will perform fast cooling or fast heating. There may be some noise, which is the sound of flowing liquid or thermal expansion or cold shrinkage. The air conditioner may blow cool or warm air, which is a normal phenomenon. During cleaning process, please make sure the room is well ventilated to avoid affecting the comfort.
Note: ● The auto clean function can only work under normal ambient temperature. If the room is dusty, clean it once a month; if not, clean it once every three months. After the auto clean function is turned on, you can leave the room. When auto clean is finished,the air conditioner will enter standby status. ● This function is only available for some models. Replacement of batteries in remote controller 1. Lift the cover along the direction of arrow (as shown in Fig 1① ). 2. Take out the original batteries (as shown in Fig 1 ② ). 3. Place two 7# (AAA 1.5V) dry batteries, and make sure the position of “ + ” polar and “ - ” polar is correct (as shown in Fig 2 ③ ). 4. Reinstall the cover (as shown in Fig 2 ④ ). ① ④ ② ③ Fig.1 Fig.2 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. ● If the display on remote controller is fuzzy or there’s no display, please replace batteries. 18 Technical Information
6.3 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. 19 Technical Information Internet Gree Cloud Cellular/ Other Wi-FI Home Wi-Fi GREE+ APP Android system Support Android 4.4 and above version
6.4 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. 20 Technical Information Internet Cloud Cellular/ Other Wi-FI Home Wi-Fi APP Android system Support Android 4.4 and above version
6.4 Brief Description of Models and Functions ●Indoor Unit 1.Basic function of system (1)Cooling mode (1) Under this mode, fan and swing operates at setting status. Temperature setting range is 16~30 OC. (2) During malfunction of outdoor unit or the unit is stopped because of protection, indoor unit keeps original operation status. (2)Drying mode (1) Under this mode, fan operates at low speed and swing operates at setting status. Temperature setting range is 16~30 OC. (2) During malfunction of outdoor unit or the unit is stopped because of protection, indoor unit keeps original operation status. (3) Protection status is same as that under cooling mode. (4) Sleep function is not available for drying mode. (3)Heating mode (1) Under this mode, Temperature setting range is 16~30 OC. (2) Working condition and process for heating mode: When turn on the unit under heating mode, indoor unit enters into cold air prevention status. When the unit is stopped or at OFF status, and indoor unit has been started up just now, the unit enters into residual heat-blowing status. (4)Working method for AUTO mode: 1.Working condition and process for AUTO mode: a.Under AUTO mode, standard heating Tpreset=20 OC and standard cooling Tpreset=25 OC. The unit will switch mode automatically according to ambient temperature. 2.Protection function a. During cooling operation, protection function is same as that under cooling mode. b. During heating operation, protection function is same as that under heating mode. 3. Display: Set temperature is the set value under each condition. Ambient temperature is (Tamb.-Tcompensation) for heat pump unit and Tamb. for cooling only unit. 4. If theres I feel function, Tcompensation is 0. Others are same as above. (5)Fan mode Under this mode, indoor fan operates at set fan speed. Compressor, outdoor fan, 4-way valve and electric heating tube stop operation. Indoor fan can select to operate at high, medium, low or auto fan speed. Temperature setting range is 16~30 OC. 2. Other control (1) Buzzer Upon energization or availably operating the unit or remote controller, the buzzer will give out a beep. (2) Auto button If press this auto button when turning off the unit, the complete unit will operate at auto mode. Indoor fan operates at auto fan speed and swing function is turned on. Press this auto button at ON status to turn off the unit. (3) Auto fan Heating mode: During auto heating mode or normal heating ode, auto fan speed will adjust the fan speed automatically according to ambient temperature and set temperature. (4) Sleep After setting sleep function for a period of time, system will adjust set temperature automatically. (5) Timer function: General timer and clock timer functions are compatible by equipping remote controller with different functions. (6) Memory function memorize compensation temperature, off-peak energization value. 21 Technical Information Memory content: mode, up&down swing, light, set temperature, set fan speed, general timer (clock timer Can't be memorized). After power recovery, the unit will be turned on automatically according to memory content. (7) Health function During operation of indoor fan, set health function by remote controller. Turn off the unit will also turn off health function. Turn on the unit by pressing auto button, and the health is defaulted ON. (8)I feel control mode After controller received I feel control signal and ambient temperature sent by remote controller, controller will work according to the ambient temperature sent by remote controller. (9)Entry condition for compulsory defrosting function When turn on the unit under heating ode and set temperature is 16 OC (or 16.5 OC by remote controller), press “ , , , , , ” button successively within 5s and then indoor unit will enter into compulsory defrosting setting status: (1) If theres only indoor units controller, it enters into indoor normal defrosting mode. (2) If theres indoor units controller and outdoor units controller, indoor unit will send compulsory defrosting mode signal to outdoor unit and then outdoor unit will operate under normal defrosting mode. After indoor unit received the signal that outdoor unit has entered into defrosting status, indoor unit will cancel to send compulsory mode to outdoor unit. If outdoor unit hasnt received feedback signal from outdoor unit after 3min, indoor unit will also cancel to send compulsory defrosting signal. (10)Refrigerant recovery function: Enter into Freon recovery mode actively: Within 5min after energization, turn on the unit at 16 OC under cooling mode, and press light button for 3 times within 3s to enter into Freon recovery mode. Fo is displayed and Freon recovery mode will be sent to outdoor unit. (11)Ambient temperature display control mode 1. When user set the remote controller to display set temperature (corresponding remote control code: 01), current set temperature will be displayed. 2. Only when remote control signal is switched to indoor ambient temperature display status (corresponding remote control code: 10) from other display status (corresponding remote control code: 00, 01,11),controller will display indoor ambient temperature for 3s and then turn back to display set temperature. Under this mode, indoor fan operates at set fan speed. Compressor, outdoor fan, 4-way valve and electric heating tube stop operation. Indoor fan can select to operate at high, medium, low or auto fan speed. Temperature setting range is 16~30 OC. (12)Off-peak energization function: Adjust compressors minimum stop time. The original minimum stop time is 180s and then we change to: The time interval between two start-ups of compressor Can't be less than 180+Ts(0≤T≤15). T is the variable of controller. Thats to say the minimum stop time of compressor is 180s~195s. Read- in T into memory chip when refurbish the memory chip each time. After power recovery, compressor can only be started up after 180+T s at least. (13) SE control mode The unit operates at SE status. (14) X-fan mode When X-fan function is turned on, after turn off the unit, indoor fan will still operate at low speed for 2min and then the complete unit will be turned off. When x-fan function is turned off, after turn off the unit, the complete unit will be turned off directly.
(15) 8 OC heating function Under heating mode, you can set 8 oCheating function by remote controller. The system will operate at 8 oC set temperature. (16)Turbo function Turbo function can be set under cooling and heating modes. Press Fan Speed button to cancel turbo setting. Turbo function is not available under auto, drying and fan modes. ●Outdoor Unit 1. Cooling mode: Working condition and process of cooling mode: ① When Tindoor ambient temperature≥Tpreset, unit enters into cooling mode. Indoor fan, outdoor fan and compressor start operation. Indoor fan operates according to set fan speed. ② When Tindoor ambient temperature≤Tpreset-2 oC, compressor stops operation and outdoor fan will stop 30s later. Indoor fan operates according to set fan speed. ③ When Tpreset-2 oC ＜Tindoor ambient temperature ＜Tpreset, unit operates according to the previous status. Under cooling mode, 4-way valve is not energized. Temperature setting range is 16~30 oC. If compressor stops because of malfunction in cooling mode, indoor fan and swing motor will work according to the original status. 2. Drying mode (1) Working condition and process of drying mode ① When Tindoor ambient temperature ＞Tpreset, unit will be in drying mode. Outdoor fan and compressor start operation while indoor fan will operate at low fan speed. ② When Tpreset-2 oC≤Tindoor ambient temperature≤Tpreset, unit operates according to the previous status. ③ When Tindoor ambient temperature ＜Tpreset-2 oC, compressor stops operation and outdoor fan will stop 30s later. (2) Under drying mode, 4-way valve is not energized. Temperature setting range is 16~30 oC. (3) Protection function: same as in cooling mode. 3. Fan mode (1) Under this mode, indoor fan can select different fan speed (except Turbo) or auto fan speed. Compressor, outdoor fan and 4-way valve all stop operation. (2) In fan mode, temperature setting range is 16~30 4. Heating mode Working condition and process of heating mode: ① W h e n T p r e s e t - ( Ti n d o o r a m b i e n t t e m p e r a t u r e - Tcompensation)≥1 oC, unit enters into heating mode. Compressor, outdoor fan and 4-way valve start operation. ② When -2 oC ＜Tpreset-(Tindoor ambient temperature- Tcompensation) ＜1 oC, unit operates according to the previous status. ③ When Tpreset-(Tindoor ambient temperature-Tcompensation)≤- 2 oC, compressor stops operation and outdoor fan will stop 30s later. Indoor fan will be in residual-heat blowing status. ④ When unit is turned off under heating mode or changed to other modes from heating mode, 4-way valve will be power-off 2min after compressor stops working (compressor is in operation status under heating mode). ⑤ When Toutdoor ambient temperature ＞30 oC, compressor stops operation immediately. Outdoor fan will stop 30s later. ⑥ Under the condition that compressor is turned on, when unit is changed to heating mode from cooling or drying mode, 4-way valve will be energized in 2~3mins delay. Note: Tcompensation is determined by IDU and ODU. If IDU controls the compensation temperature, then Tcompensation is determined according to the value sent by IDU to ODU; If 22 Technical Information IDU does not control the compensation temperature, then Tcompensation will default to 3 oC by the ODU. 5. Freon recovery mode After the Freon recovery signal from IDU is received, cooling at rated frequency will be forcibly turned on to recover Freon. Indoor unit will display Fo. If any signal from remote controller is received, unit will exit from Freon recovery mode and indoor unit stops displaying Fo. 6. Compulsory defrosting If unit is turned on under heating mode and set temperature is 16 oC (by remote controller), press “ , , , , , ” within 5s, unit will enter into compulsory defrosting mode and send the signal to ODU. When the compulsory defrosting signal from ODU is received, IDU will exit from the compulsory defrosting mode and stop sending the signal to ODU. After ODU receives the compulsory defrosting code, it will start compulsory defrosting. Defrosting frequency and opening angle will be the same as in normal defrosting mode. When compulsory defrosting is finished, the complete unit resumes original status. 7. Auto mode Auto mode is determined by controller of IDU. See IDU logic for details. 8. 8 oC heating Set temperature is 8 oC. Under this mode, “Cold air prevention” function is shielded. If compressor is operating under this mode, fan speed will adjust according to auto fan speed; if compressor stops operation under this mode, indoor fan will be in residual-heat blowing status. oC. Display board of IDU displays 8 When power on, communication light will be blinking in a normal way (after receiving a group of correct signals, blinking stops for 0.2s~0.3s). If theres no communication, communication light will be always on. If other ODU has malfunction, communication light will be on for 1s and off for 1s in a circular way. oC.
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 installation and maintenance shall be performed by distributor or qualified person. ●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. WARNINGS Electrical Safety Precautions: 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 by a qualified person. 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. 23 Installation and Maintenance 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; dont 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: 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. Refrigerant Safety Precautions: 1. 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. 2.Avoid contact between refrigerant and fire as it generates poisonous gas; Prohibit prolong the connection pipe by welding. 3. 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. 4. Make sure no refrigerant gas is leaking out when installation is completed. 5. If there is refrigerant leakage, please take sufficient measure to minimize the density of refrigerant. 6. 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.
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. 24 Installation and Maintenance 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. WARNINGS ●Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. 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. ●Be aware that refrigerants may not contain an odour. ● That compliance with national gas regulations shall be observed; ●The appliance shall be stored so as to prevent mechanical damage from occurring. ●Appliance shall be installed, operated and stored in a room with a floor area larger than Xm 2. ●Appliance filled with flammable gas R32. For repairs, strictly follow manufacturers instructions only. Be aware that refrigrants not contain odour. ●Read specialists manual. Safety Operation of Flammable Refrigerant Qualification of workers ●Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorises their competence to handle refrigerants safely in accordance with an industry recognised assessment specification. ●Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants. Information about the correct working procedures ● Installation and Commissioning ●The air conditioner is not allowed to use in a room that has 25 Installation and Maintenance 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. 2 ) table a - Minimum room area ( m The release Charge amount (kg) <1.836 1.9 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3 3.1 3.2 3.3 0.6 / 32 35 38 42 46 50 54 59 63 68 73 78 83 88 94 height(m) ●Connect the pipes and carry out a leak test before charging with refrigerant. ● Maintenance ●Portable equipment shall be repaired outside or in a workshop specially equipped for servicing units with flammable refrigerants. ●Ensure sufficient ventilation at the repair place. ●Be aware that malfunction of the equipment may be caused by refrigerant loss and a refrigerant leak is possible. ●Discharge capacitors in a way that won't cause any spark. The standard procedure to short circuit the capacitor terminals usually creates sparks. ●Reassemble sealed enclosures accurately. If seals are worn, replace them. ●Check safety equipment before putting into service. ● Repair • Portable equipment shall be repaired outside or in a workshop specially equipped for servicing units with flammable refrigerants. • Ensure sufficient ventilation at the repair place. • Be aware that malfunction of the equipment may be caused by refrigerant loss and a refrigerant leak is possible. • Discharge capacitors in a way that won’t cause any spark. • When brazing is required, the following procedures shall be carried out in the right order: – Remove the refrigerant. If the recovery is not required by national regulations, drain the refrigerant to the outside. Take care that the drained refrigerant will not cause any danger. In doubt, one person should guard the outlet. Take special care that drained refrigerant will not float back into the building. – Evacuate the refrigerant circuit. – Purge the refrigerant circuit with nitrogen for 5 min (not required for A2L refrigerants). – Evacuate again (not required for A2L refrigerants). – Remove parts to be replaced by cutting, not by flame. – Purge the braze point with nitrogen during the brazing procedure. – Carry out a leak test before charging with refrigerant. • Reassemble sealed enclosures accurately. If seals are worn, replace them. • Check safety equipment before putting into service. ● Decommissioning • If the safety is affected when the equipment is putted out of service, the refrigerant charge shall be removed before decommissioning. • Ensure sufficient ventilation at the equipment location. • Be aware that malfunction of the equipment may be caused by refrigerant loss and a refrigerant leak is possible. • Discharge capacitors in a way that won’t cause any spark. • Remove the refrigerant. If the recovery is not required by national regulations, drain the refrigerant to the outside. Take care that the
drained refrigerant will not cause any danger. In doubt, one person should guard the outlet. Take special care that drained refrigerant will not float back into the building. • When flammable refrigerants except A2L refrigerants are used, – Evacuate the refrigerant circuit. – Purge the refrigerant circuit with nitrogen for 5 min. – Evacuate again. – Fill with nitrogen up to atmospheric pressure. – Put a label on the equipment that the refrigerant is removed. ● Disposal • Ensure sufficient ventilation at the working place. • Remove the refrigerant. If the recovery is not required by national regulations, drain the refrigerant to the outside. Take care that the drained refrigerant will not cause any danger. In doubt, one person should guard the outlet. Take special care that drained refrigerant will not float back into the building. • When flammable refrigerants except A2L refrigerants are used, – Evacuate the refrigerant circuit. – Purge the refrigerant circuit with nitrogen for 5 min. – Evacuate again. – Cut out the compressor and drain the oil. • Evacuate the refrigerant circuit. • Purge the refrigerant circuit with nitrogen for 5 min. • Evacuate again. • Cut out the compressor and drain the oil. 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. Information on servicing ●Checks to the area Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimised. For repair to the refrigerating system, the following precautions shall be completed prior to conducting work on the system. ●Work procedure Work shall be undertaken under a controlled procedure so as to minimise the risk of a flammable gas or vapour being present while the work is being performed. ●General work area All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out. Work in confined spaces shall be avoided. ●Checking for presence of refrigerant The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially toxic or flammable atmospheres. Ensure that the leak detection equipment being used is suitable for use with all applicable refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe. ●Presence of fire extinguisher If any hot work is to be conducted on the refrigerating equipment or any associated parts, appropriate fire extinguishing equipment shall be available to hand. Have a dry powder or CO2 fire extinguisher adjacent to the charging area. 26 Installation and Maintenance ●No ignition sources No person carrying out work in relation to a refrigerating system which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space. Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable hazards or ignition risks. “No Smoking” signs shall be displayed. ●Ventilated area Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere. ●Checks to the refrigeration equipment Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the manufacturer’s maintenance and service guidelines shall be followed. If in doubt, consult the manufacturer’s technical department for assistance. The following checks shall be applied to installations using flammable refrigerants: ---the actual refrigerant charge is in accordance with the room size within which the refrigerant containing parts are installed; ---the ventilation machinery and outlets are operating adequately and are not obstructed; ---if an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of refrigerant; ---marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be corrected; ---refrigerating pipe or components are installed in a position where they are unlikely to be exposed to any substance which may corrode refrigerant containing components, unless the components are constructed of materials which are inherently resistant to being corroded or are suitably protected against being so corroded. ●Checks to electrical devices Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures. If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is satisfactorily dealt with. If the fault cannot be corrected immediately but it is necessary to continue operation, an adequate temporary solution shall be used. This shall be reported to the owner of the equipment so all parties are advised. Initial safety checks shall include: ● that capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking; ● that no live electrical components and wiring are exposed while charging, recovering or purging the system; ● that there is continuity of earth bonding. Repairs to sealed components 1. During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc. If it is absolutely necessary
to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the most critical point to warn of a potentially hazardous situation. 2. Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not altered in such a way that the level of protection is affected. This shall include damage to cables, excessive number of connections, terminals not made to original specification, damage to seals, incorrect fitting of glands, etc. Ensure that the apparatus is mounted securely. Ensure that seals or sealing materials have not degraded to the point that they no longer serve the purpose of preventing the ingress of flammable atmospheres. Replacement parts shall be in accordance with the manufacturer’s specifications. Repair to intrinsically safe components Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible voltage and current permitted for the equipment in use. Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmosphere. The test apparatus shall be at the correct rating. Replace components only with parts specified by the manufacturer. Other parts may result in the ignition of refrigerant in the atmosphere from a leak. NOTE The use of silicon sealant can inhibit the effectiveness of some types of leak detection equipment.Intrinsically safe components do not have to be isolated prior to working on them. Cabling Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans. Detection of flammable refrigerants Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used. The following leak detection methods are deemed acceptable for all refrigerant systems. Electronic leak detectors may be used to detect refrigerant leaks but, in the case of flammable refrigerants, the sensitivity may not be adequate, or may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.) Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used. Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed, and the appropriate percentage of gas (25 % maximum) is confirmed. Leak detection fluids are also suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work. NOTE Examples of leak detection fluids are – bubble method, – fluorescent method agents. If a leak is suspected, all naked flames shall be removed/ extinguished. If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut off valves) in a part of the system 27 Installation and Maintenance remote from the leak. Removal of refrigerant shall be according to "Removal and evacuation". Removal and evacuation When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used. However, for flammable refrigerants it is important that best practice is followed since flammability is a consideration. The following procedure shall be adhered to: • remove refrigerant; • purge the circuit with inert gas (optional for A2L); • evacuate (optional for A2L); • purge with inert gas (optional for A2L); • open the circuit by cutting or brazing. The refrigerant charge shall be recovered into the correct recovery cylinders. For appliances containing flammable refrigerants other than A2L refrigerants, the system shall be purged with oxygen-free nitrogen to render the appliance safe for flammable refrigerants. This process may need to be repeated several times. Compressed air or oxygen shall not be used for purging refrigerant systems. For appliances containing flammable refrigerants, other than A2L refrigerants, refrigerants purging shall be achieved by breaking the vacuum in the system with oxygen-free nitrogen and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum. This process shall be repeated until no refrigerant is within the system. When the final oxygen-free nitrogen charge is used, the system shall be vented down to atmospheric pressure to enable work to take place. This operation is absolutely vital if brazing operations on the pipe- work are to take place. Ensure that the outlet for the vacuum pump is not close to any potential ignition sources and that ventilation is available. Charging procedures In addition to conventional charging procedures, the following requirements shall be followed. • Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimise the amount of refrigerant contained in them. • Cylinders shall be kept in an appropriate position according to the instructions. • Ensure that the refrigerating system is earthed prior to charging the system with refrigerant. • Label the system when charging is complete (if not already). • Extreme care shall be taken not to overfill the refrigerating system. Prior to recharging the system, it shall be pressure-tested with the appropriate purging gas. The system shall be leak-tested on completion of charging but prior to commissioning. A follow up leak test shall be carried out prior to leaving the site. Decommissioning Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refrigerants are recovered safely. Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re- use of recovered refrigerant. It is essential that electrical power is available before the task is commenced. a) Become familiar with the equipment and its operation. b) Isolate system electrically. c) Before attempting the procedure, ensure that:
• mechanical handling equipment is available, if required, for handling refrigerant cylinders; • all personal protective equipment is available and being used correctly; • the recovery process is supervised at all times by a competent person; • recovery equipment and cylinders conform to the appropriate standards. d) Pump down refrigerant system, if possible. e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system. f) Make sure that cylinder is situated on the scales before recovery takes place. g) Start the recovery machine and operate in accordance with instructions. h) Do not overfill cylinders (no more than 80 % volume liquid charge). i) Do not exceed the maximum working pressure of the cylinder, even temporarily. j) When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off. k) Recovered refrigerant shall not be charged into another refrigerating system unless it has been cleaned and checked. Labelling Equipment shall be labelled stating that it has been de- commissioned and emptied of refrigerant. The label shall be dated and signed. For appliances containing flammable refrigerants, ensure that there are labels on the equipment stating the equipment contains flammable refrigerant. Recovery When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely. When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge is available. All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the recovery of refrigerant). Cylinders shall be complete with pressure-relief valve and associated shut-off valves in good working order. Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs. The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of all appropriate refrigerants including, when applicable, flammable refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working order. Hoses shall be complete with leak-free disconnect couplings and in good condition. Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer if in doubt. The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant waste transfer note arranged. Do not mix refrigerants in recovery units and especially not in cylinders. If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does not remain within the lubricant. The evacuation process shall be carried out prior to returning 28 Installation and Maintenance the compressor to the suppliers. Only electric heating to the compressor body shall be employed to accelerate this process. When oil is drained from a system, it shall be carried out safely.
Main Tools for Installation and Maintenance Level meter Measuring tape Drill head Electric drill Torque wrench Open-end wrench Inner hexagon Vacuum pump Pressure meter Pipe cutter Pipe bender Pipe expander Electronic scale Refrigerant container 29 Installation and Maintenance Screw driver Impact drill Electroprobe Universal meter Electronic leakage detector spanner Pipe pliers Pipe pliers Soldering appliance
8. Installation 8.1 Installation Dimension Diagram the ceiling Space to >30cm >200cm Space to the obstuction Space to the wall(30cm at least for piping side) >10cm Space to the wall(30cm at least for piping side) >10cm >5cm Space to the back side obstruction Space to the Space to the obstruction > 50cm >30cm >30cm Space to the wall >50cm Space to the obstruction Space to the obstruction >200cm Drainage pipe 30 Installation and Maintenance
Installation Procedures 31 Installation and Maintenance 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) Install wall-mounting frame, 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 and hang the indoor unit Make the bound pipes pass through the wall hole and then connect outdoor unit Connect pipes of 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 se
8.2 Installation Parts-checking No. Name 1 Indoor unit 2 Outdoor unit 3 Connection pipe 4 Drainage pipe 5 Connecting cable(power cord) 6 Wall pipe 7 Sealing gum 8 Wrapping tape 9 Support of outdoor unit 10 Fixing screw 11 Drainage plug(cooling and heating unit) 12 Owners manual, remote controller Note: 1.Please contact the local agent for installation. 2.Dont use unqualified power cord. 8.3 Selection of Installation Location 1. 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) The appliance shall nost be installed in the laundry. (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). 2. 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. 32 Installation and Maintenance 3. 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. 8.4 Electric Connection Requirement 1. Safety Precaution (1) Must follow the electric safety regulations when installing the unit. (2) According to the local safety regulations, use qualified power supply circuit and air switch. (3) 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. (4) Properly connect the live wire, neutral wire and grounding wire of power socket. (5) Be sure to cut off the power supply before proceeding any work related to electricity and safety. (6) Do not put through the power before finishing installation. (7) If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard . (8) The temperature of refrigerant circuit will be high, please keep the interconnection cable away from the copper tube. (9) The appliance shall be installed in accordance with national wiring regulations. (10) Appliance shall be installed, operated and stored in a room with a floor area larger than Xm 2(Please refer to table "a" in section of "Safety Operation of Inflammable Refrigerant" for Space X.) Please notice that the unit is filled with flammable gas R32. Inappropriate treatment of the unit involves the risk of severe damages of people and material. Details to this refrigerant are found in chapter “refrigerant”. 2. Grounding Requirement: (1) The air conditioner is the first class electric appliance.It must be properly grounding 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. (4) The appliance must be positioned so that the plug is accessible.
(5) An all-pole disconnection switch having a contact separation of at least 3mm in all poles should be connected in fixed wiring. (6) Including an air switch with suitable capacity, please note the following table. Air switch should be included magnet buckle and heating buckle function, it can protect the circuit-short and overload. (Caution: please do not use the fuse only for protect the circuit) Model Air switch capacity Power cord 32K 25A 3G2.5 8.5 Installation of Indoor Unit 1. Choosing Installation Iocation Recommend the installation location to the client and then confirm it with the client. 2. 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 5-10° Φ70mm Fig.1 Note: Pay attention to dust prevention and take relevant safety measures when opening the hole. 3. Connect the Pipe of Indoor Unit (1) Remove the left and right screw covers, unscrew the screws that fix the air inlet panel, and remove the air inlet panel and filter. (As show in Fig.2) (2) According to the determined discharge method, unscrew the screws that fix the baffle(the rodent-proof plate), and remove the baffle at the corresponding position. (3) Expand the connecting pipe and pass one end of the bellows through the routing hole. (4) Bend the connecting pipe according to the required length, unscrew the nut on the indoor pipe, align the cone of the connecting pipe with the center of the corresponding indoor pipe, tighten the nut by hand, and then tighten it with a torque wrench.(As show in Fig.3) (5) Wrap the indoor pipe and joint of connection pipe with insulating pipe, and then wrap it with tape. (As show in Fig.5) 33 Installation and Maintenance screws air-inlet panel baffle(rodent-proof plate) Fig.2 Open-end wrench Union nut Union nut Pipe joint Pipe Pipe Torque wrench Indoor pipe Fig.3 Fig.4 Refer to the following table for wrench moment of force: Piping size Tightening torque(N.m) 1/4" 15~20 3/8" 30~40 1/2" 45~55 5/8" 60~65 3/4" 70~75 Insulating pipe Fig.5 4. Install Drain Hose (1) Connect the drain hose to the outlet pipe of indoor unit.(As show in Fig.6) (2) Bind the joint with tape.(As show in Fig.7) Drain hose Outlet pipe drain hose outlet pipe Tape Fig.6 Fig.7
Note: (1) Add insulating pipe in the indoor drain hose in order to prevent condensation. (2) The plastic expansion particles are not provided. (As show in Fig.8) Drain hose Insulating pipe Fig.8 5. Connect Wire of Indoor Unit (1) Remove the cover of the electrical box and the pass wire slot cover. (2) Connect the power connection wire to the wiring terminal according to the color, tighten the screw. (3) Press the power connection wire with a crimping clamp, place the power connection wire in the wire groove, and fix it with a wire hook. (4) Cover the cover of the electrical box and the cover of the cable groove. N(1) 2 3 blue black yellow- green brown Outdoor unit connection Note: The wiring connect is for reference only, please refer to the actual one. Fig.9 WARING: (1) All wires of indoor unit and outdoor unit should be connected by a professional. (2) If the length of power connection wire is insufficient, please contact the supplier for a new one. Avoid extending the wire by yourself. 6. Wrap the connection pipe (1) Wrap the connection pipe, the connection wire and the drain pipe together with an insulation sleeve, and then wrap it with a wrapping tape. ● Before wrapping, fix some positions for convenient wrapping. Fix the insulation sleeve at the position of the knock-off hole. ● Do not wrap too tightly. ● During wrapping, do not wrap the joint of connection pipe for subsequent leakage detection. (2) Cut the sheet of the baffle(the rodent-proof plate), install the baffle back, adjust the position of the baffle up and down, and clamp the pipeline as much as possible. (3) Tighten the baffle screws. 34 Installation and Maintenance drain pipe connection pipe insulation sleeve wrapping tape connection pipe drain pipe sleeve insulation wrapping tape connection wire Fig.10 indoor and outdoor power cord indoor unit gas pipe liquid pipe drain hose band Fig.11 9. 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. (3) Fix the wall pipe.(As show in Fig.12) Indoor Outdoor Wall pipe Sealing gum Fig.12 Note: Do not bend the drain hose too excessively in order to prevent blocking. 8.6 Installation of Outdoor unit 1. 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.13) (4) For the unit with cooling capacity of 2300W~5000W, 6
Refer to the following table for wrench moment of force: expansion screws are needed; for the unit with cooling capacity of Piping size Tightening torque(N.m) 6000W~8000W, 8 expansion screws are needed; for the unit with cooling capacity of 10000W~16000W, 10 expansion screws are 1/4" 15~20 needed. 3/8" 30~40 1/2" 45~55 5/8" 60~65 3/4" 70~75 5. Connect Outdoor Electric Wire (1) Remove the wire clip; connect the power connection wire and Drain vent Chassis power cord to the wiring terminal according to the color; fix them Outdoor drain joint Drain hose with screws.(As show in Fig.18) At least 3cm above the floor Fig.13 Fig.14 Note: the wiring connect is 2. Install Drain Joint(Only for cooling and heating unit) (1) Connect the outdoor drain joint into the hole on the chassis. (2) Connect the drain hose into the drain vent. (As show in Fig.14) for reference only,please N(1) 2 L(3) refer to the actual one. yellow- green yellow- green brown blue black brown blue (black) N Indoor unit connection L 3. Fix Outdoor Unit (1) Place the outdoor unit on the support. (2) Fix the foot holes of outdoor unit with bolts. (As show in Fig.15) POWER Fig.18 (2) Fix the power connection wire and power cord with wire clip. CAUTION Foot holes (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 Handle distance. Foot holes (3)The connecting wire and connection pipe can't touch each other. Valve cover (4)Top cover of outdoor unit and electric box assembly should be Fig.15 Fig.16 fixed by the screw. Otherwise, it can cause a fire,or short circuit caused by water or dust. 4. Connect Indoor and Outdoor Pipes (1) Remove the screw on the right handle and the valve cover of outdoor unit and then remove the handle and the valve cover.(As show in Fig.16) (2) Remove the screw cap of valve and aim the pipe joint at the bellmouth of pipe.(As show in Fig.17) (5) 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. 6. Neaten the Pipes (1) The pipes should be placed along the wall, bent reasonably 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 a U-shaped curve in the pipe before pipe goes into the room, in order to prevent rain from getting into the room.(As show in Fig.19) Liquid pipe Pipe joint Liquid valve gas pipe Union nut gas valve Fig.17 (3) Pretightening the union nut with hand. (4) Tighten the union nut with torque wrench . 35 Installation and Maintenance
Liquid valve Piezometer Lo Hi Gas valve the drain hose can't raise upwards. Valve cap Refrigerant charging vent Wall Nut of refrigerant Charging vent U-shaped curve Vacuum pump Drain hose Fig.19 Fig.20 Inner hexagon spanner Note: Open Close (1) The through-wall height of drain hose shouldn't be higher than the outlet pipe hole of indoor unit.(As show in Fig.20) (2) Slant the drain hose slightly downwards. The drain hose can't be curved, raised and fluctuant, etc. (As show in Fig.21) (3) The water outlet can't be placed in water in order to drain smoothly.(As show in Fig.22) Fig.23 2. 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. The drain hose can't be fluctuant The water outlet can't be placed in water The drain hose can't be fluctuant The water outlet can't be fluctuant Fig.21 Fig.22 8.7 Vacuum Pumping and Leak Detection 1. 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.23) 36 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? 2 Have you done the refrigerant leakage test? 3 Is heat insulation of pipeline sufficient? 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? 5 6 Is electric wiring and pipeline installed correctly? 7 Is the unit grounded securely? 8 Does the power cord follow the specification? 9 Is there any obstruction in air inlet and air outlet? 10 The dust and sundries caused during installation are removed? 11 The gas valve and liquid valve of connection pipe are open completely? 12 Is the inlet and outlet of piping hole been covered? 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 oC, the air conditioner Can't start cooling. 37 Installation and Maintenance The unit may drop, shake or emit noise. It may cause insufficient cooling (heating) capacity. It may cause condensation and water dripping. It may cause malfunction or damage the parts. It may cause malfunction or damage the parts. It may cause electric leakage. It may cause malfunction or damage the parts. It may cause insufficient cooling (heating) capacity. It may cause malfunction or damaging the parts. It may cause insufficient cooling (heating) capacity. It may cause insufficient cooling(heating) capacity or waster eletricity.
9. Maintenance 9.1 Error Code List Error code Malfunction name AC status Possible causes Malfunction of jumper cap The complete unit stops operation Communication malfunction between indoor unit and outdoor unit Cool: compressor stops operation, while indoor fan operates; Heat: all loads stops operation. Cool/Dry: compressor stops operation, while indoor fan operates. Heat: all loads stops operation. IPM protection Cool/Dry: all loads stops operation except indoor fan. Heat: all loads stops operation. Malfunction of outdoor fan/ malfunction of DC motor Cool/Dry: compressor stops operation, while indoor fan operates. Heat: all loads stops operation. Overload protection of compressor Cool: compressor and outdoor fan stops operation, while indoor fan operates; Heat: Compressor, outdoor fan and indoor fan stops operation. Refrigerant insufficient protection, cut-off protection of refrigerant Cool/Dry: indoor fan operates, while compressor and outdoor fan stops operation; Heat: all loads stops operation. Indoor ambient temperature sensor is open/short-circuited Cool/Dry: indoor fan operates, while compressor and outdoor fan stops operation; Heat: all loads stops operation. Indoor evaporator temperature sensor is open/short-circuited No feedback from indoor unit’s motor The complete unit stops operation Indoor unit and outdoor can be matched with each other Heat: compressor, outdoor unit and indoor fan stops operation. Capacity of indoor unit and outdoor unit can’t be matched. Heat: all loads are stopped; other modes: outdoor unit stops operation. Malfunction of jumper cap of outdoor unit Gas valve temperature sensor is ON / short- circuited 38 Installation and Maintenance 1. Jumper cap is not installed in control panel; 2. Poor contact of jumper cap; 3. Jumper cap is damaged; 4. The tested circuit of jumper cap on control panel is abnormal. See “Communication malfunction” See “IPM protection, over-phase current of compressor” 1. Outdoor condenser, air inlet and air outlet are blocked by filth or dirt; 2. Fan is blocked or loosened; 3. Motor or connection wire of motor is damaged; 4. Main board of outdoor unit is damaged; (As for dual-outdoor fan, L3 indicates fan 1; LA indicates fan 2) 1. Overload wire of compressor is loose; 2. The overload protector is damaged. Under normal circumstances, the resistance between both ends of terminal is less than 1ohm. 3.See “Overload protection of compressor , High discharge temperature protection of compressor” 1. Is system cooling under high humidity environment, thus temperature difference of heat transfer is small; 2. Check whether the big valve and small valve of outdoor unit are opened completely; 3. Is the temperature sensor of evaporator of indoor unit loose? 4. Is the temperature sensor of condenser of outdoor unit loose? 5. Is the capillary or the electronic expansion valve blocked? 6. Is refrigerant leaking? 1. Temperature sensor is not well connected; 2. Temperature sensor is damaged 3. Main board of indoor unit is damaged. 1. Temperature sensor is not well connected; 2. Temperature sensor is damaged 3. Main board of indoor unit is damaged. 1. Is the fan blocked? 2. Is the motor terminal loose? 3. Is the connection wire of motor damaged? 4. Is the motor damaged? 5. Is the main board of indoor unit damaged? Jumper cap of outdoor unit hasn’t been installed. 1. Temperature sensor is not well connected or damaged; 2. The wire of temperature sensor is damaged, causing short circuit to copper pipe or outer casing; 3. Main board of outdoor unit is damaged.
Error code Malfunction name AC status Possible causes Liquid valve temperature sensor is ON / short- circuited Cool/Dry: all loads stops operation except indoor fan; Heat: all loads stops operation. High pressure protection of system Cool: compressor, outdoor fan and indoor fan stop operation; Heat: compressor and outdoor fan stop operation at first. About 1min later, indoor fan stops operation; 2mins later, the 4-way valve stop operation. Low pressure/low system pressure protection/ compressor low pressure protection Cool/Dry: compressor and outdoor fan stops operation, while indoor fan operates; Heat: all loads stops operation. High discharge temperature protection of compressor Cool/Dry: compressor and outdoor fan stops operation, while indoor fan operates; Heat: all loads stops operation. AC overcurrent protection Mode shock/sysmte mode shock Load of indoor unit stops operation (indoor fan, E-heater, swing) Cool: compressor stops operation while indoor fan operates; Heat: all loads stops operation. High temperature prevention protection Cool/Dry: compressor stops operation, while indoor fan operates; Heat: all loads stops operation. Malfunction of EEPROM Cool/Dry: compressor and outdoor fan stops operation, while indoor fan operates. Refrigerant-recovery mode Cool/Dry: compressor and outdoor fan stop operation, while indoor fan operates; Heat: all loads stops operation. Outdoor ambient temperature is open/short- circuited 39 Installation and Maintenance 1. Temperature sensor is not well connected or damaged; 2. The wire of temperature sensor is damaged, causing short circuit to copper pipe or outer casing; 3. Main board of outdoor unit is damaged. 1. Heat exchange of outdoor unit is too dirty, or it blocked the air inlet/outlet; 2. Is power voltage normal; (three-phase unit) 3. Ambient temperature is too high; 4. Wiring of high pressure switch is loose or high pressure switch is damaged; 5. The internal system is blocked; (dirt blockage, ice blockage, oil blockage, angle valve is not completely opened) 6. Main board of outdoor unit is damaged; 7. Refrigerant is too much. 1. Low pressure switch is damaged; 2. Refrigerant inside the system is insufficient. See “Overload protection of compressor , High discharge temperature protection of compressor” 1. Power voltage is unstable; 2. Power voltage is too low; 3. System load is too high, which leads to high current; 4. Heat exchange of indoor unit is too dirty, or it blocked the air inlet/outlet; 5. Fan motor operation is abnormal; the fan speed is too low or not functioning; 6. Compressor is blocked; 7. The internal system is blocked; (dirt blockage, ice blockage, oil blockage, angle valve is not completely opened) 8. Main board of outdoor unit is damaged. See “AC overcurrent protection” Malfunction of one-to-more system; there may be two indoor units which has set the shock mode, such as one is cooling and the other is heating. See “High temperature prevention protection; high power; system isabnormal” Main board of outdoor unit is damaged. Refrigerant recovery. The maintenance personnel operate it when he is maintaining the unit. 1. Temperature sensor is not connected well or damaged; 2.Temperature sensor wire of outdoor unit is damaged; short circuit between the temperature sensor and copper pipe or outer case 3.Main board of outdoor unit is damaged;
Error code Malfunction name AC status Possible causes Cool/Dry: compressor and outdoor fan stop operation, while indoor fan operates; Heat: after operating for 3mins, all loads stops operation. Outdoor condenser temperature sensor is open/short-circuited Outdoor air discharge temperature is open/short- circuited Complete unit stops operation; motor of sliding door is cut off power. Cool/Dry: compressor stops operation, while indoor fan operates; Heat: all loads stops operation. Malfunction of micro switch Cool/Dry: all loads stops operation except indoor fan; Heat: all loads stops operation. System is abnormal Cool/Dry: compressor stops operation, while indoor fan operates; Heat: all loads stops operation. Desynchronizing of compressor Cool/Dry: compressor stops operation, while indoor fan operates; Heat: all loads stops operation. PFC protection Cool: compressor and outdoor fan stop operation; Heat: compressor and outdoor fan stop operation at first; about 1min later, indoor fan stops operation. Demagnetization protection of compressor Communication malfunction between indoor unit and inspection board Normal operation Malfunction of humidity sensor Compressor, outdoor fan and indoor fan stop operation; The inspection board is damaged. Cool: compressor and outdoor fan stops operation, while indoor fan operates. High power protection Cool/Dry: compressor stops, while indoor fan operates; Heat: all loads stops operation. Start-up failed Cool: compressor and outdoor fan stop operation; Heat: compressor and outdoor fan stop operation at first; about 1min later, indoor fan stops operation. Lost phase Cool/Dry: compressor stops operation, while indoor fan operates; Heat: all loads stops operation. Over-phase current protection of compressor 40 Installation and Maintenance 1. Temperature sensor is not connected well or damaged; 2. Temperature sensor wire of outdoor unit is damaged; short circuit between the temperature sensor and copper pipe or outer case; 3. Main board of outdoor unit is damaged. 1. The exhaust temperature sensor is not connected well or damaged. 2.Temperature sensor wire of outdoor unit is damaged; short circuit between the temperature sensor and copper pipe or outer case 3.Main board of outdoor unit is damaged; 1. The sliding door is blocked; 2. Malfunction of the photoelectric inspection panel of sliding door; See “High temperature prevention protection; high power; system isabnormal” See “Desynchronization diagnosis for compressor” 1. The power grid quality is bad; AC input voltage fluctuates sharply; 2. Power plug of air conditioner or wiring board or reactor is not connected reliably; 3. Indoor and outdoor heat exchanger is too dirty, or air inlet/ outlet is blocked; 4. Main board of outdoor unit is damaged. 1. The main board of outdoor unit is damaged; 2. Compressor is damaged; 1. Poor connection between the indoor unit and the inspection board. 2.The main board of indoor unit is damaged; 3. The inspection board is damaged; See “High temperature prevention protection; high power; system is abnormal” See “Malfunction diagnosis for failure startup” 1. The main board of outdoor unit is damaged; 2. The compressor is damaged; 3. The connection wire of compressor is not connected well. See “Overload protection of compressor , High discharge temperature protection of compressor”
Error code Malfunction name AC status Possible causes Cool: compressor and outdoor fan stops operation, while indoor fan operates; Heat: compressor, outdoor fan and indoor fan stop operation. Undefined outdoor unit error Cool: compressor and outdoor fan stops operation; Heat: compressor and outdoor fan stop at first; about 1min later, indoor fan stops operation; Communication malfunction between the drive board and the main board Cool/Dry: compressor stops operation, while indoor fan operates; Heat: all loads stops operation. Circuit malfunction of module temperature sensor Cool: compressor stops operation, while indoor fan operates; Heat: all loads stops operation. Module overheating protection Cool: compressor, outdoor fan and indoor fan stop operation; Heat: compressor and outdoor fan stop operation at first; about 1min later, indoor fan stops operation. Malfunction of ambient temperature sensor of drive board Cool/Dry: compressor stops operation, while indoor fan operates; Heat: all loads stops operation. DC bus voltage is too high Cool/Dry: compressor stops operation, while indoor fan operates; Heat: all loads stops operation. DC bus voltage is too low Cool/Dry: compressor stops operation, while indoor fan operates; Heat: all loads stops operation. Charging malfunction of capacitor Cool: compressor and outdoor fan stop operation; Heat: compressor and outdoor fan stop operation at first; about 1min later, indoor fan stops operation. Malfunction of RF module Cool: compressor and outdoor fan stops operation, while indoor fan operates; Heat: compressor, outdoor fan and indoor fan stops operation. Phase current detection circuit malfunction of Cool: compressor and outdoor fan stop operation; Heat: compressor and outdoor fan stop operation at first; about 1min later, indoor fan stops operation. Lost phase protection of compressor 41 Installation and Maintenance 1. Outdoor ambient temperature exceeds the operation range of unit (eg: less than-20 oC for cooling; more than 30 oC or more than 60 oC for heating); 2. Are wires of compressor not connected tightly? 3. Failure startup of compressor? 4. Is compressor damaged? 5. Is main board damaged? 1. The drive board is damaged; 2. The main board of outdoor unit is damaged; 3. The drive board and the main board is not connected well. Replace outdoor control board 1. Air inlet / air outlet of outdoor unit are blocked by filth or dirt; 2. Condenser of outdoor unit is blocked by filth or dirt; 3. IPM screw of main board is not tightened; 4. Main board of outdoor unit is damaged; 1. The ambient temperature sensor of the drive board is not connected well; 2. Malfunction of the ambient temperature sensor of drive board. 1. Measure the voltage between position L and position N on the wiring board (XT). If it’s higher than 265 VAC, please turn on the unit until the power voltage is decreased to the normal range; 2. If the AC input is normal, please replace the outdoor control board. 1. Measure the voltage between position L and position N on the wiring board (XT). If it’s lower than 150 VAC, please turn on the unit until the power voltage is increased to the normal range; 2. If the AC input is normal, please replace the outdoor control board. See “Charging malfunction of capacitor” 1. The connection wire of RF module is not connected well. 2. Malfunction of RF module; The control board is damaged 1. The main board of outdoor unit is damaged; 2. The compressor is damaged; 3. The connection wire of compressor is not connected well.
Error code Malfunction name AC status Possible causes Cool/Dry: compressor stops operation, while indoor fan operates; Heat: all loads stops operation. DC bus voltage drop malfunction Cool: compressor and outdoor fan stops operation, while indoor fan operates; Heat: compressor, outdoor fan and indoor fan stops operation. Current detection malfunction of unit 4-way valve is abnormal This malfunction occurs when the unit is heating. All loads stops operation. Malfunction of zero- crossing signal of indoor unit Compressor, outdoor fan and indoor fan stop operation. Cool: compressor stops operation, while indoor fan operates; Heat: all loads stops operation. Zero-crossing malfunction of outdoor unit Evaporator anti-freezing protection Not error code, it is the status code in cooling process Anti cold air protection Not error code, it is the status code in cooling process Defrosting Heat indicator Flash once/10s Not error code, it is the status code in cooling process Analysis or processing of some of the malfunction display: 1. Compressor discharge protection Possible causes: shortage of refrigerant; blockage of air filter; poor ventilation or air flow short pass for condenser; the sys tem has noncondensing gas (such as air, water etc.); blockage of capillary assy (including filter); leakage inside four-way valve causes incorrect operation; malfunction of compressor; malfunction of protection relay; malfunction of discharge sen sor; outdoor temperature too high. Processing method: refer to the malfunction analysis in the above section. 2. Low voltage overcurrent protection Possible cause: Sudden drop of supply voltage. 3.Communication malfunction Processing method: Check if communication signal cable is connected reliably. 4. Sensor open or short circuit Processing method: Check whether sensor is normal, connected with the corre sponding position on the controller and if damage of lead wire is found. 5. Compressor over load protection Possible causes: insufficient or too much refrigrant; blockage of capillary and increase of suction temp.; improper running of compressor, burning in or stuck of bearing, damage of discharge valve; malfunction of protector. Processing method: adjust refrigerant amount; replace the capillary; replace the compressor; use universal meter to check if the contactor of compress or is fine when it is not overheated, if not replace the protector. 6. System malfunction i.e.overload protection. When tube temperature(Check the temperature of outdoor heat exchanger when cooling and check the temperatur e of indoor heat exchanger when heating) is too high, protection will be activated. Possible causes: Outdoor temperature is too high when cooling; insufficient outdoor air circulation; refrigerant flow malfunc tion. please refer to the malfunction analysis in the previous section for handling method . 7. IPM module protection Processing method:Once the module malfunction happens,if it persists for a long time and can not be selfcanceled, cut off the power and turn off the unit,and then re-energize the unit again after about 10 min. After repeating the procedure for sever times, if the malfunction still exists,replace the module. 42 Installation and Maintenance The power voltage is unstable. 1. Is the complete unit lacking of refrigerant? 2. There’s malfunction for the circuit of control board of outdoor unit. Replace the control board of outdoor unit. 1. Power voltage is lower than AC175V; 2. Wiring terminal of 4-way valve is loose or broken;3. 4-way valve is damaged. Replace the 4-way valve. 1. The power is abnormal; 2. Main board of indoor unit is damaged. Replace the control board of outdoor unit.
9.2 Procedure of Troubleshooting
1. Troubleshooting for jumper cap
Main check points:
(1) jumper cap (2) control board of indoor unit
43
Installation and Maintenance
Display shows “C5”
Check whether the main
board of controller is inserted with
Insert the equipped
jumper cap
N
jumper cap.
Eliminate
malfunction
Y
N
Insert the jump cap
tightly again
Check whether the
jumper cap is not inserted
Y
well.
N
N
Y
Eliminate
malfunction
Replace the jumper
cap with a new one
Eliminate
malfunction
Y
Y
N
It's the malfunction of
main board. Replace
the main board with
the a new one.
End2. Communication malfunction
Main check points:
(1) Connection wire between indoor unit and outdoor unit
(2) Wiring inside the unit
(3) Communication circuit of control board of indoor unit
(4) Communication circuit of control board of outdoor unit
Start
Check whether the
unit has operated normally before
N
the malfunction occurs.
Y
Check the connection wire of
indoor unit and outdoor unit
according to the wiring diagram.
Check whether the connection
wire of controller inside the
electric box of indoor/outdoor
unit is loose.
Is the
connection correct?
Y
N
N
Connect the connection
wire of indoor/outdoor unit
correctly according to the
wiring diagram.
Connect the connection wire of
indoor/outdoor unit correctly
according to the wiring diagram.
Is the connection
wire of electric box is
Y
normal?
N
Eliminate
malfunction
Check the communication
circuit of outdoor unit
N
Eliminate
malfunction
Is there's problem
for the communication
Replace the control
board of outdoor unit.
Y
circuit?
N
Eliminate
malfunction
N
Replace the control board
of indoor unit.
Y
Y
Y
End
Note: method for checking the communication circuit of inverter split type and floor standing unit: cut off the
communication wires of indoor/outdoor unit, and then measure the voltage between COM and N of the control board of
outdoor unit (DC notch, about 56V)
44
Installation and Maintenance3. IPM protection , over-phase current of compressor Main check points: (1) compressor COMP terminal (2) power supply voltage (3) compressor (4) charging amount of refrigerant (5) air inlet and air outlet of indoor/outdoor unit NOTE:The control board as below means the control board of outdoor unit. Put through the power and turn on the unit Check the connection between the control board and the compressor according to the electric wiring diagram. IPM occurs when the unit has operated for a N period of time. Y Connect the compressor wires correctly according to the electric wiring diagram, and then put through the power and then turn on the unit Check whether the compressor wire (UVW) is connected Y and the connection sequence is correct. Measure the voltage of terminal L and terminal N of wiring board with AC voltmeter. N Measure the resistance among three terminals (UVW) with the resistance measuring meter. Check the power supply voltage and make it resume to the range of ±10% of rated voltage. Is the voltage between terminal L and terminal N of XT in the N range of ±10% of rated voltage? Is the resistance value for the three terminals of compressor are almost the same? Y Y 1.Check whether the heat exchanger of indoor/outdoor unit is dirty and whether the heat exchanger is covered by foreign object 2.Check whether the indoor fan and the outdoor fan operate normally; 3.Check whether the system pressure is too high; 4.Check whether the pressure is too high because there are too much refrigerant; Measure the resistance among three terminals (UVW) and the copper pipe with the resistance measuring meter. Is the resistance more than 500M Correct them basing on the Service Manual and then put through the power and then turn on the unit. Replace the compressor Are there abnormal circumstances described N Y as above? N N Y Does the unit operate normally? N Y Replace the control board Y End 45 Installation and Maintenance
4. Overload protection of compressor
, high discharge temperature, protection of compressor
Main check points:
(1) electronic expansion valve (2) expansion valve terminal
(3) charging amount of refrigerant (4) overload protector
NOTE:The control board as below means the control board of outdoor unit.
After the unit has been
cut off the power for more
than 20mins
Check whether the
overload protector SAT is connected.
Y
Under the ambient temperature,
use the ohmmeter to measure the resistance of
overload protector. Is the resistance
less than 1000ohm?
Y
Check whether the wiring
terminal FA of electronic expansion valve is
N
connected well.
Y
The resistance between the first four leading
feet closing to the terminal hole and the fifth
leading feet are almost the same respectively
and they are all less than 100ohm.
Replace overload protector SAT.
Replace the coil of electronic
expansion valve EKV.
Eliminate malfunction
N
Check whether the refrigerant is
leaking; if yes, please charge the
refrigerant according to the
technical specification.
Eliminate malfunction
N
Replace control board
End
46
Installation and Maintenance
N
Connect the wires well
according to the wiring
diagram.
N
Y
Y5.Troubleshooting for temperature sensor
,
,
,
,
Main check points:
(1) connection terminal (2) temperature sensor (3) main board
47
Installation and Maintenance
Start
Check whether the
connection terminal between the
temperature sensor and the control board is
loose or not connected
well.
Insert the temperature
sensor well
Eliminate
the malfunction
Check whether there
is short circuit caused by
the tripped-over elements on the
control board.
Pull the elements uprightly
Eliminate
the malfunction
Check whether the
resistance of temperature sensor is
normal by referring to the
resistance table.
Replace the temperature
sensor with another one
with the same model
Eliminate
the malfunction
Replace the controller with
a new one with the same
model
End6.High temperature prevention protection
; high power
; system is abnormal
Main check points:
(1) outdoor temperature (2) fan (3)air inlet and air outlet of indoor/outdoor unit
NOTE:The control board as below means the control board of outdoor unit.
48
Installation and Maintenance
Overload protection,
high temperature
prevention protection
Normal protection. Please operate
it when the outdoor ambient
temperature is improved.
Is the outdoor ambient temperature
higher than 53℃？
Y
N
After the complete unit is disconnected
from the power for 20mins
Improve the unit's
radiation environment.
Is the radiation of indoor unit
and outdoor unit is not good?
Y
N
Check whether the fan terminal
OFAN is connected well
Check whether the outdoor
fan operates normally?
N
Replace the outdoor fan
Y
Replace the fan capacitor C1
Replace the control board
Measure any two
terminal with the ohmmeter and resistance
is less than 1,000ohm.
End7.Desynchronization diagnosis for compressor Main check point: (1) system pressure (2) power supply voltage NOTE:The control board as below means the control board of outdoor unit. Desynchronization occurs after turning on the unit N normally? Check whether the compressor has stopped operation for more than 3mins. Y Check whether the compressor wire (UVW) is connected well and the connection sequence is the clockwise direction. N Y unit normal? Connect the wires Replace the control board Eliminate malfunction Y N Replace the compressor End 49 Installation and Maintenance Desynchronization occurs during operation Check whether the fan terminal OFAN is connected well. Replace the fan capacity C1. Does the outdoor fan operate N Y Improve the radiation of the unit (such as clean the heat exchanger, strengthen the ventilation, etc.) . Replace the outdoor fan Is the radiation for the unit Y not good? N Turn on the unit when the power has resumed to the normal range. Is the input voltage of the N Y Charge the refrigerant according the Service Manual. Is the refrigerant too much? Y N Replace the control board Eliminate malfunction Y N Replace the compressor End
8.Malfunction diagnosis for failure startup Main check points: (1) compressor wire (2) compressor (3) charging amount of refrigerant NOTE:The control board as below means the control board of outdoor unit. Put through the power and turn on the unit Check whether the compressor has stopped operation for more than 3mins. Y Check whether the compressor wire (UVW) is connected and the connection sequence is correct. Y Check whether the charging amount of refrigerant is too much. Y N Charge the refrigerant according to the Service Manual. Does the unit started up normally? N Replace the control board Eliminate malfunction N Replace the compressor End 50 Installation and Maintenance The time for stop operation is not enough and the system's high pressure and low pressure is unbalanced. Please wait for 3mins and then turn on the unit again. N Please improve the connection between the control board and the compressor and then connect it well according to the wiring diagram. N Does the unit started Y up normally? N Y
9. Charging malfunction of capacitor Main check points: (1) wiring board XT (2) reactor NOTE:The control board as below means the control board of outdoor unit. Put through the power to turn on the unit and then wait for 1min Measure the voltage at both ends of electrolytic capacitor with DC voltmeter. Is the voltage higher than 85% of Replace the control board Y rated voltage? N Measure the AC voltage between terminal L and terminal N of wiring board XT. Turn off the power and maintain the power supply to make the voltage resume to ±10% of rated voltage. Is the voltage is within ±10% of rated N voltage? Y Wait for 20min after turning off the power or use DC voltmeter to measure the voltage at both ends of capacity until it's lower than 20V. Check the connection status of reactor (L in the electric wiring diagram). Connect the wires of reactor L according to the electric wiring diagram. Is the wire connection of reactor L normal? N Y Replace the control board End 51 Installation and Maintenance There's malfunction for the voltage detection circuit of control board. Put through the power and turn on the unit again Eliminate malfunction Y N Put through the power and turn on the unit again. Eliminate malfunction Y N
10. Troubleshooting-motor(indoor fan) doesn't operate
Main check points:
(1) connection terminal (2) motor (3) control board AP1 of indoor unit (4) blade
10.1 DC motor
52
Installation and Maintenance
Display shows "H6"
Pull the blade with hand
under de-energization
status
Check whether the
blade operates smoothly
Adjust the motor and the blade
to make the motor operate
smoothly.
1
Put through the
power to check whether the
<
1
malfunction is
eliminated
Under power-off status,
check whether the wiring terminal
Insert the wiring terminal
of indoor fan again
<
between the indoor fan and the
main board is loose
Put through the
power and turn on the unit to
check whether the malfunction is
1
<
1
eliminated
Put through the power and
turn on the unit to check whether the
voltage between terminal 1 and terminal 2
It's the malfunction of main board.
Replace the main board with a
new one with the same model.
1
of motor is 280~310VD
<
<
Check whether the
voltage between terminal 2 and
It's the malfunction of main board.
Replace the main board with a
new one with the same model.
1
terminal 3 of motor is 15VDC
1
Check whether there's
voltage signal between terminal 2
It's the malfunction of main board.
Replace the main board with a
new one with the same model.
1
and terminal 4 of motor
<
End
It's the malfunction of motor.
Replace the motor with a new
one with the same mode10.2 PG motor Display shows "H6" Pull the blade with hand under de- energization status Adjust the motor and the blade to make the blade operate smoothly. Check whether the blade operates N smoothly Y Eliminate malfunction N Check whether the feedback terminal of Insert the feedback terminal again Y indoor fan's motor is loose. Eliminate malfunction N Y N Check whether the control terminal of indoor Replace the jumper cap with a new one Y fan's motor is loose Y Measure the voltage between this foot and the neutral wire of main board. N Eliminate malfunction N Y PG Put through the power and turn on the unit again. Measure whether the output voltage of control terminal of indoor Replace the fan with a new one Y fan's motor is more than 50V within 1min after the horizontal louver is opened. N Eliminate malfunction N It's the malfunction of main board. Replace the main board with another one. Y End 53 Installation and Maintenance
11. AC overcurrent protection Start The power voltage is unstable. The normal fluctuation is about 10% of rated voltage on the nameplate. Y N N The power voltage is too low and the load is too high. Adjust the power voltage to make it normal. Y N N Check whether indoor or outdoor heat exchanger is Clean the outdoor and indoor heat exchangers to eliminate the blockage of air inlet and air outlet. Y too dirty or the air inlet and the air outlet is blocked. N N Check whether the fan motor can operate. The fan operates Check the motor and install the motor again to let the fan operate normally Y abnormally; fan speed is too lower the the fan can't operate. N N Check whether the compressor operates normal; whether there's Y Solve the operation problem of compressor abnormal sound, oil leakage and high temperature for the case, etc. N N System is blocked (check the capillary and filter, Y Replace the blockage component or if the cut off valve is frosted). N N Use the ampere meter to measure the current of live wire of main board. Y Check the system Check whether the current is more than the overcurrent protection value. N N Replace the control board End 54 Installation and Maintenance Eliminate malfunction Y Eliminate malfunction Y Y Eliminate malfunction Eliminate malfunction Y Eliminate malfunction Y Eliminate malfunction Y Y Eliminate malfunction
9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether its 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 conditioner After 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 its 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; Units 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; Unitt 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 Wrong wire connection, or poor connection Check the wiring status according to circuit diagram Stepping motor is damaged Stepping motor can't operate Repair or replace stepping motor 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 Connect wires according to wiring diagram to make sure all wiring terminals are connected firmly
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 its 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 theres abnormal sound Theres the sound of "PAPA" Normal phenomenon. Abnormal sound will disappear after a few minutes. When turn on or turn off the unit, theres 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 therere 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 therere parts touching together inside the outdoor unit Theres 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 Theres 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 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.
10. Exploded View and Parts List 10.1 Indoor Unit 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 39 38 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. 57 Installation and Maintenance
NO. Description 1 Right Side Plate Sub-Assy 2 Rear Plate Sub-Assy 3 Right Air Guard 4 Top Cover Sub-Assy 5 Left Air Guard 6 Left Side Plate Sub-Assy 7 Evaporator Assy 8 Air Guard Assy 9 Chassis 10 Wire Clamp 11 Fan Motor 12 Water Tray Sub-Assy 13 Breakwater Sub-Assy 14 Protection Cover 15 Remote Control Panel Sub-assy 16 Propeller Housing Sub-assy 17 Centrifugal Fan 18 Diversion Circle 19 Gasket 20 Electric Box Cover Sub-Assy 21 Electric Box Assy 22 Main Board Some models may not contain some parts, please refer to the actual product. 58 Installation and Maintenance NO. Description 23 Terminal Board 24 Motor Cover 25 Stepping Motor 26 Air Guide Bushing 27 Guide Blade Lever 28 Stepping Motor 29 Crank 1 30 Air Louver 1 31 Air Louver 2 32 Guide Louver 33 Crankshaft of Guide Louver 34 Air Outlet Panel Assy 35 Display Sub-Assy 36 Display Board 37 Remote Controller 38 Screw Cover 39 Air Intake Panel Assy 40 Filter (lower) 41 Filter Sub-assy(Upper) 42 Connecting Cable 43 Connecting Cable
10.2 Outdoor Unit 27 28 30 31 32 34 33 35 25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 The component is only for rererence;please refer to the actual product 59 Installation and Maintenance 26 24 29 36 23 22 21 20 19 18 17 16
NO. Description 1 Front Grill 2 Cabinet 3 Axial Flow Fan 4 Brushless DC Motor 5 Chassis Sub-assy 6 Drainage Plug 7 Drainage Connecter 8 Cushioned Nut 9 Clap Board Assy 10 Compressor and fittings 11 4-way Valve Assy 12 Right Side Plate Assy 13 Valve Support Sub 14 Cut-off Valve(gas) 15 Back Cover Nut 16 Cut-off Valve(liquid) 17 Back Cover Nut 18 Valve Cover 19 Union Nut 20 Union Nut 21 Handle 22 Support 23 Valve Support Baffle 24 Rear Grill 25 Electronic Expansion Valve assy 26 Temperature Sensor 27 Condenser Assy 28 Electric Box Cover 29 Pipe Clamp 30 Main Board 31 Electric box 32 Top Cover-assy 33 Motherboard radiator 34 Motor Support Sub-Assy 35 Left Side Plate 36 Terminal Board 37 Electric Expand Valve Fitting Some models may not contain some parts, please refer to the actual product. 60 Installation and Maintenance
11. Removal Procedure 11.1 Removal Procedure of Indoor Unit Caution: discharge the refrigerant completely before removal. Step Procedure 1. Before disassemble 2. Remove Air Intake Panel Assy (1) Open the screw cover, use the screwdriver to remove 2 screws at both sides of air intake panel and then pull the air intake panel to remove it; (2) Draw out the filter sub-assy. 61 Installation and Maintenance Screw cover Air Intake Panel Screw Filter Sub-Assy
Step Procedure 3. Remove Electric Box Cover and Pass Wire Slot Cover Remove 3 screws used for fixing the electric box cover, remove the electric box cover. Remove 3 screws used for fixing the pass wire slot cover, remove the pass wire slot cover. 4. Remove Electric Box Assy and Electric Raceway Loosen the bundle used for fixing the motor wire in the electric raceway. Remove 5 screws used for fixing the electric raceway, and then remove the electric raceway. Pull out the wiring terminals for each component, then remove screws used for fixing the electric box, pull the electric box outwards to remove it. 62 Installation and Maintenance Electric Box Cover Screws Screws Pass Wire Slot Cover Screws Electric Raceway Screws
Step Procedure 5. Remove Air Outlet Panel Assy Remove 3 screws at the top part of the air outlet panel, 2 screw at the lower part and screws under the screw cover, push the air outlet panel upwards slightly and then remove the air outlet panel. 6. Remove Air Guard Remove 10 screws used for fixing the air guard, and then the air guard can be removed. 7. Remove top cover Remove 7 screws on the top cover, and then pull the top cover upwards to remove it. 63 Installation and Maintenance Air Outlet Panel Assy Screws Air Guard Top cover
Step Procedure 8. 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. 9. Remove retaining plate of water tray and evaporator Remove 3 screws used for fixing the press plate of propeller housing and then remove the press plate of propeller housing; Rotate the guide loop to a certain position along the clockwise direction, and then remove the guide loop; Remove 9 screws used for fixing the propeller housing, and then remove the propeller housing; Use wrench to twist off the nuts used for fixing the centrifugal chiller and then pull the centrifugal blade outwards; 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. 10. Remove breakwater sub-assy and water tray sub- assy Remove 2 screws used for fixing the left and right side plate and then remove the breakwater sub-assy and water tray sub-assy. 64 Installation and Maintenance Evaporator Centrifugal blade Motor Propeller housing Guide loop Press plate of propeller housing Breakwater sub-assy Water tray sub-assy
Step Procedure 11. Remove chassis After 9 screws are removed, pull the chassis downwards to remove it. 12. 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. 65 Installation and Maintenance Right side plate sub-assy Left side plate sub-assy
11.2 Removal Procedure of Outdoor Unit
Caution: discharge the refrigerant
completely before removal.
Step
Procedure
1. Before disassembly
2. Remove top cover
Remove the screws fixing top cover and then remove
the top cover.
3. Remove big handle and valve cover
Remove the screws fixing big handle, valve cover and
then remove them.
66
Installation and Maintenance
top cover
big handle
valve coverStep
Procedure
4. Remove front panel assy
Remove connection screws connecting the front panel
assy with the chassis and the motor support, and then
remove the front panel assy.
5. Remove rear grill
Remove the screws connecing the left side plate and
right side plate and then remove rear grill.
6. Remove right side plate assy
Rescrew the ground screws, remove the ground wires,
loosen the screws fixing terminal board, remove the
terminal board, rescrew the screws fixing the right
plate, and remove the right side plate assy.
67
Installation and Maintenance
Front Panel Assy
Rear Grill
Right Side
Plate AssyStep
Procedure
7. Remove valve suppprt
Remove the valve support bolck, remove the screws
fixing valve support, remove the screws fixing the liquid
valve and gas valve then remove the valve support.
8. Remove gas valve and liquid valve
Unsolder the welding joint connecting the gas valve
and the liquid valve, remove them.
Note:
Discharge the refrigerant completely befor unsoldering;
when unsoldering, wrap the gas valve with a wet cloth
completely to avoid damage to the valve caused by
high temperature.
9. Remove electronic expansion valve
Remove the terminals of the electric expand valve
fitting and rotate to remove the electric expand valve
fitting.
Unsolder the welding joint connecting the electronic
expansion Valve and then remove the electronic
expansion valve.
68
Installation and Maintenance
valve supprt
Valve Support Block
welding joint
liquid valve
gas valve
electric expand
valve fitting
electric expansion
valve sub-Assy
welding jointStep
Procedure
10. Remove electric box assy
Unplug the terminals, unscrew 1 screw that secures
the electrical box assy, release the two snaps on the
electrical box assy (in the clapboard and condenser
angle), pull outwards, and remove the electrical box
assy.
11. Remove 4-way valve assy
Unsolder the welding joints connecting the 4-way valve
assy, 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 axial flow fan
Remove the nut on the fan and then remove the axial
flow fan.
69
Installation and Maintenance
Electric Box Assy
4-way valve
assy
axial flow fanStep
Procedure
13. Remove motor
Remove the screws fixing the motor and then remove
the motor.
14. Remove motor support
Remove the screws fixing the motor support and lift the
motor support to remove it.
15. Remove clapboard assy
Remove the screws fixing the clapboard assy and then
remove the clapboard assy.
70
Installation and Maintenance
motor
motor support
clapboard assyStep
Procedure
16. Remove compressor
Remove the 3 foot nuts on the compressor and then
remove the compressor.
71
Installation and Maintenance
compressorAppendix Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit display Fahrenheit Celsius Fahrenheit display Fahrenheit Celsius Fahrenheit display Fahrenheit Celsius temperature（ temperature（ temperature（ oF） oF） oC） oF） oF） oC） oF） oF） oC） （ （ （ （ （ （ 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 display Fahrenheit Celsius Fahrenheit display Fahrenheit Celsius Fahrenheit display Fahrenheit Celsius temperature（ temperature（ temperature（ oF） oF） oC） oF） oF） oC） oF） oF） oC） （ （ （ （ （ （ 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 R32 Piping size Outdoor unit throttle Liquid pipe Gas pipe Cooling only(g/m) Cooling and heating(g/m) 1/4” 3/8” or 1/2” 12 16 1/4” or 3/8” 5/8” or 3/4” 12 40 1/2” 3/4” or 7/8” 24 96 5/8” 1" or 1 1/4” 48 96 3/4'' / 200 200 7/8'' / 280 280 72 Installation and Maintenance
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 - 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. 73 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
Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) oC) Resistance(kΩ) Temp( Temp( -19 138.10 0 49.02 20 18.75 40 7.97 -18 128.60 2 44.31 22 17.14 42 7.35 -16 115.00 4 40.09 24 15.68 44 6.79 -14 102.90 6 36.32 26 14.36 46 6.28 -12 92.22 8 32.94 28 13.16 48 5.81 -10 82.75 10 29.90 30 12.07 50 5.38 -8 74.35 12 27.18 32 11.09 52 4.99 -6 66.88 14 24.73 34 10.20 54 4.63 -4 60.23 16 22.53 36 9.38 56 4.29 -2 54.31 18 20.54 38 8.64 58 3.99 Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) oC) Resistance(kΩ) Temp( Temp( -19 181.40 20 25.01 60 4.95 100 1.35 -15 145.00 25 20.00 65 4.14 105 1.16 -10 110.30 30 16.10 70 3.48 110 1.01 -5 84.61 35 13.04 75 2.94 115 0.88 0 65.37 40 10.62 80 2.50 120 0.77 5 50.87 45 8.71 85 2.13 125 0.67 10 39.87 50 7.17 90 1.82 130 0.59 15 31.47 55 5.94 95 1.56 135 0.52 Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Temp( oC) Resistance(kΩ) Temp( -30 911.400 10 98 50 17.65 90 4.469 -25 660.8 15 77.35 55 14.62 95 3.841 -20 486.5 20 61.48 60 12.17 100 3.315 -15 362.9 25 49.19 65 10.18 105 2.872 -10 274 30 39.61 70 8.555 110 2.498 -5 209 35 32.09 75 7.224 115 2.182 0 161 40 26.15 80 6.129 120 1.912 5 125.1 45 21.43 85 5.222 125 1.682 74 Installation and Maintenance oC) Resistance(kΩ) Temp( oC) Resistance(kΩ) Temp( oC) Resistance(kΩ) oC) Resistance(kΩ) Temp( oC) Resistance(kΩ) Temp( oC) Resistance(kΩ) oC) Resistance(kΩ) Temp( oC) Resistance(kΩ) Temp( oC) Resistance(kΩ)
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070 Tel: (+86-756) 8522219 Fax: (+86-756) 8669426 E-mail: global@cn.gree.com For product improvement, specifications and appearance in this manual are subject to change without prior notice. JF00305529