Gree GWH09RB-K3DNA2C Service Manual
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Gree GWH09RB-K3DNA2C Service Manual

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Change for Life

Service Manual

MODELS: GWH09RB-K3DNA2C(CB301001100)
GWH09RB-K3DNA2C(CB301001102)
GWH09RB-K3DNA3C(CB302000900)
GWH09RB-K3DNA3C(CB302000901)
GWH09RB-K3DNA5C(CB304000500)
GWH09RB-K3DNA6C(CB305000100)
GWH09RB-K3DNA8C(CB313000100)
GWH12RB-K3DNA2C(CB301001200)
GWH12RB-K3DNA2C(CB301001202)
GWH12RB-K3DNA3C(CB302001000)
GWH12RB-K3DNA3C(CB302001001)
GWH12RB-K3DNA5C(CB304000600)
GWH12RB-K3DNA6C(CB305000200)
GWH12RB-K3DNA8C(CB313000200)
(Refrigerant R410A)
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

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Summary of Contents for Gree GWH09RB-K3DNA2C

  • Page 1: Service Manual

    Change for Life Service Manual MODELS: GWH09RB-K3DNA2C(CB301001100) GWH09RB-K3DNA2C(CB301001102) GWH09RB-K3DNA3C(CB302000900) GWH09RB-K3DNA3C(CB302000901) GWH09RB-K3DNA5C(CB304000500) GWH09RB-K3DNA6C(CB305000100) GWH09RB-K3DNA8C(CB313000100) GWH12RB-K3DNA2C(CB301001200) GWH12RB-K3DNA2C(CB301001202) GWH12RB-K3DNA3C(CB302001000) GWH12RB-K3DNA3C(CB302001001) GWH12RB-K3DNA5C(CB304000600) GWH12RB-K3DNA6C(CB305000200) GWH12RB-K3DNA8C(CB313000200) (Refrigerant R410A) GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...

  • Page 2: Table Of Contents

    Table of Contents Table of Contents Summary and Features ..................1 1. Safety Precautions ....................3 2. Specifi cations ......................4 2.1 Unit Specifi cations ......................4 2.2 Operation Characteristic Curve ..................12 2.3 Capacity Variation Ratio According to Temperature ............12 2.4 Operation Data .......................13 2.5 Noise Criteria Curve Tables for Both Models ..............13 3.
  • Page 3 Table of Contents 8. Exploded Views and Parts List ..............38 8.1 Indoor Unit ........................38 8.2 Outdoor Unit ........................46 9. Troubleshooting ....................50 9.1 Malfunction Analysis .......................50 9.2 Flashing LED of Indoor/Outdoor Unit and Primary Judgement ........54 10. Removal Procedure ..................72 10.1 Removal Procedure of Indoor Unit ................72 10.2 Removal Procedure of Outdoor Unit ................77...

  • Page 4: Summary And Features

    Summary and Features Summary and Features Indoor Unit GWH09RB-K3DNA2C/I(CB301N01100) GWH09RB-K3DNA2C/I(CB301N01101) GWH12RB-K3DNA2C/I(CB301N01200) GWH12RB-K3DNA2C/I(CB301N01201) GWH09RB-K3DNA3C/I(CB302N00900) GWH09RB-K3DNA3C/I(CB302N00901) GWH12RB-K3DNA3C/I(CB302N01000) GWH12RB-K3DNA3C/I(CB302N01001) GWH09RB-K3DNA5C/I(CB304N00500) GWH12RB-K3DNA5C/I(CB304N00600) GWH09RB-K3DNA6C/I(CB305N00100) GWH12RB-K3DNA6C/I(CB305N00200) GWH09RB-K3DNA8C/I(CB313N00100) GWH12RB-K3DNA8C/I(CB313N00200) Outdoor Unit GWH09RB-K3DNA3C/O(CB302W00900)
  • Page 5 Summary and Features GWH09RB-K3DNA3C/O(CB302W00901) GWH12RB-K3DNA3C/O(CB302W01000) GWH12RB-K3DNA3C/O(CB302W01001) Remote Controller YAA1FB...

  • Page 6: Safety Precautions

    Safety Precautions 1. Safety Precautions Installing, starting up, and servicing air conditioner can be Make sure the outdoor unit is installed on a stable, level hazardous due to system pressure, electrical components, surface with no accumulation of snow, leaves, or trash and equipment location, etc.

  • Page 7: Specifi Cations

    Specifi cations 2. Specifi cations 2.1 Unit Specifi cations GWH09RB-K3DNA2C, GWH09RB-K3DNA3C Model GWH09RB-K3DNA5C, GWH09RB-K3DNA6C GWH09RB-K3DNA8C CB301001100, CB302000900 Product Code CB304000500, CB305000100 CB313000100 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity (Min~Max) 2600(880~3000) Heating Capacity (Min~Max)
  • Page 8 Specifi cations Model of Outdoor Unit GWH09RB-K3DNA3C/O Product Code of Outdoor Unit CB302W00900 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD. Compressor Model QXA-A086zE190A Compressor Oil FVC 68D / RB 68EP Compressor Type Rotary L.R.A. 20.00 Compressor RLA 4.20 Compressor Power Input Overload Protector 1NT11L-6233 Throttling Method...
  • Page 9 Specifi cations Model GWH09RB-K3DNA2C, GWH09RB-K3DNA3C Product Code CB301001102, CB302000901 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity (Min~Max) 2600(880~3000) Heating Capacity (Min~Max) 2750(760~3500) Cooling Power Input (Min~Max) 720(110~1200) Heating Power Input (Min~Max) 720(110~1470) Cooling Power Current 3.13...
  • Page 10 Specifi cations Model of Outdoor Unit GWH09RB-K3DNA3C/O Product Code of Outdoor Unit CB302W00901 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD. Compressor Model QXA-A086zE190A Compressor Oil FVC 68D / RB 68EP Compressor Type Rotary L.R.A. 20.00 Compressor RLA 4.20 Compressor Power Input Overload Protector 1NT11L-6233 Throttling Method...
  • Page 11 Specifi cations GWH12RB-K3DNA2C, GWH12RB-K3DNA3C Model GWH12RB-K3DNA5C, GWH12RB-K3DNA6C GWH12RB-K3DNA8C CB301001200, CB302001000 Product Code CB304000600, CB305000200 CB313000200 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity (Min~Max) 3500(480~4000) Heating Capacity (Min~Max) 3650(650~4280) Cooling Power Input (Min~Max) 1100(110~1300) Heating Power Input (Min~Max) 1100(110~1580) Cooling Power Current...
  • Page 12 Specifi cations Model of Outdoor Unit GWH12RB-K3DNA3C/O Product Code of Outdoor Unit CB302W01000 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD. Compressor Model QXA-A091zE190A Compressor Oil FVC 68D / RB 68EP Compressor Type Rotary L.R.A. 20.00 Compressor RLA 4.50 Compressor Power Input Overload Protector 1NT11L-6233 Throttling Method...
  • Page 13 Specifi cations Model GWH12RB-K3DNA2C, GWH12RB-K3DNA3C Product Code CB301001202, CB302001001 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity (Min~Max) 3500(480~4000) Heating Capacity (Min~Max) 3650(650~4280) Cooling Power Input (Min~Max) 1100(110~1300) Heating Power Input (Min~Max) 1100(110~1580) Cooling Power Current 4.78 Heating Power Current 4.78...
  • Page 14 Specifi cations Model of Outdoor Unit GWH12RB-K3DNA3C/O Product Code of Outdoor Unit CB302W01001 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD. Compressor Model QXA-A091zE190A Compressor Oil FVC 68D / RB 68EP Compressor Type Rotary L.R.A. 20.00 Compressor RLA 4.50 Compressor Power Input Overload Protector 1NT11L-6233 Throttling Method...

  • Page 15: Operation Characteristic Curve

    Specifi cations 2.2 Operation Characteristic Curve Cooling Heating Condition Condition Indoor:DB 20 Indoor:DB 27 WB19 Indoor air flow:Turbo Indoor air flow: Turbo Pipe length:5m Pipe length:5m Voltage:230V Voltage:230V Compressor Speed(rps) Compressor Speed(rps) 2.3 Capacity Variation Ratio According to Temperature n i l Condition Condition Indoor:DB20...

  • Page 16: Operation Data

    Specifi cations 2.4 Operation Data Cooling Temperature Standard Heat exchanger pipe Model Indoor fan Outdoor fan Compressor condition (°C) pressure temp. name mode mode(rpm) revolution (Hz) Indoor Outdoor P (MPa) T1 (°C) T2 (°C) in:8~11 in:50~80 Turbo 27/19 35/24 0.85~1.0 Turbo out:11~14 out:37~43...

  • Page 17: Construction Views

    Construction Views 3. Construction Views 3.1 Indoor Unit Φ55 Φ55 3.2 Outdoor Unit GWH09RB-K3DNA3C/O(CB302W00900) Unit: mm...
  • Page 18 Construction Views GWH09RB-K3DNA3C/O(CB302W00901) GWH12RB-K3DNA3C/O(CB302W01000)
  • Page 19 Construction Views GWH12RB-K3DNA3C/O(CB302W01001)

  • Page 20: Refrigerant System Diagram

    Refrigerant System Diagram 4. Refrigerant System Diagram 4-Way valve HEAT EXCHANGER (EVAPORATOR) Accumlator Compressor HEAT EXCHANGER (EVAPORATOR) Capillary Strainer Strainer COOLING HEATING Refrigerant pipe diameter Liquid :1/4" (6 mm) Gas : 3/8" (9.52 mm)

  • Page 21: Schematic Diagram

    CT12 OVERLOAD 4-WAY VALVE ORANGE PROTECTIVE EARTH BROWN ELECTRONIC EXPANSION VALVE BLACK YEGN YELLOW GREEN WHITE Indoor Unit GWH09RB-K3DNA2C/I(CB301N01100), GWH09RB-K3DNA2C/I(CB301N01101), GWH09RB-K3DNA3C/I(CB302N00900) GWH09RB-K3DNA5C/I(CB304N00500), GWH09RB-K3DNA8C/I(CB313N00100), GWH12RB-K3DNA2C/I(CB301N01200) GWH12RB-K3DNA2C/I(CB301N01201), GWH12RB-K3DNA3C/I(CB302N01000), GWH12RB-K3DNA5C/I(CB304N00600) GWH12RB-K3DNA8C/I(CB313N00200), GWH09RB-K3DNA6C/I(CB305N00100), GWH12RB-K3DNA6C/I(CB305N00200) POWER DISPLAY ROOM TUBE TEM.SENSOR TEM.SENSOR YEGN W1 BU N(1)

  • Page 22: Fan Motor

    Schematic Diagram GWH09RB-K3DNA3C/I(CB302N00901), GWH12RB-K3DNA3C/I(CB302N01001) DISPLAY ROOM TUBE POWER TEM.SENSOR TEM.SENSOR YEGN CN1 CN2 W1 BU N(1) W2 BK ROOM TUBE DISP-1 DISP-2 COM-OUT W3 BN YEGN AC-L L-OUT W4 YEGN JUMP EVAPORATOR SWING-UD HEALTH-L HEALTH-N COOL PLASMA GENERATOR SWING MOTOR MOTOR(U.D) Outdoor Unit OUTROOM EXHAUST...

  • Page 23: Printed Circuit Board

    Schematic Diagram 5.2 Printed Circuit Board (1) Indoor unit TOP VIEW Solid-state relay Port of neutral wire Auto button Feedback of indoor fan Live wire of health function Port of indoor fan Port of motor for vertical swing Port of motor for horizontal swing Protective tube...
  • Page 24 Schematic Diagram (2) Outndoor unit TOP VIEW compressor fan neilsbed inductance pin1 four-way valve electric heater inductance pin2 chassis electric heater 10-core communication cable compressor temp. sensor overload protection electric expansion valve BOTTOM VIEW...

  • Page 25: Function And Control

    Function and Control 6. Function and Control 6.1 Remote Control Operations ON/OFF Press it to start or stop operation. Press it to decrease temperaturesetting. Press it to increase temperaturesetting. MODE £” Press it to select operation mode(AUTO/COOL/DRY/FAN/HEAT). Press it to set fan speed. SWING Press it to set swing angle.
  • Page 26 Function and Control LOCK icon: is displayed by pressing "+" and “-” buttons simultaneously. Press them again to clear the display. SET TIME display: After pressing TIMER button,ON or OFF will blink.This area will show the set time. DIGITAL display: This area will show the set temperature.
  • Page 27 Function and Control SWING: Press this button to set up & down swing angle, which circularly changes as below : This remote controller is universal. If any command is sent out,the unit will carry out the command as indicates the guide louver swings as: I FEEL: Press this button to turn on I FEEL function.
  • Page 28 Function and Control Press “TEMP” and “CLOCK” simultaneously in HEAT mode to start 8 Heating Function Nixie tube on the remote controller displays “ ” and a selected temperature of “ 8 ”. (46 if Fahrenheit is adopted). Repeat the operation to quit the function. About Back-lighting Function The unit lights for 4s when energizing for the first time, and 3s for later press.

  • Page 29: Description Of Each Control Operation

    Function and Control 6.2 Description of Each Control Operation 1. Temperature Parameters Indoor preset temperature (T preset Indoor ambient temperature (T amb. 2. Basic Functions Once energized, in no case should the compressor be restarted within less than 3 minutes. In the situation that memory function is available, for the first energization, if the compressor is at stop before de-energization, the compressor will be started without a 3-minute lag;...
  • Page 30 Function and Control (3) HEAT mode The condition and process of heating If T ≤T +2˚C , HEAT mode will act, the compressor, outdoor fan and reversal valve will run, the indoor fan will delay preset 3min to stop at the latest If T +2˚C <...
  • Page 31 Function and Control Note: T indicated in 1 and 2 refers to, under initially heating mode, the indoor ambient temperature before the indoor amb. command to start the compressor is performed according to the program, or after the unit is withdrawn from defrost, the indoor ambient temperature before the defrost symbol is cleared.
  • Page 32 Function and Control Designation of sensors Faults The sensor is detected to be open-circuited or short-circuited for successive 5 Indoor ambient temperature seconds The sensor is detected to be open-circuited or short-circuited for successive 5 Indoor tube temperature seconds The sensor is detected to be open-circuited or short-circuited for successive 30 Outdoor ambient temperature seconds The sensor is detected to be open-circuited or short-circuited for successive 30...
  • Page 33 Function and Control swinging states: Location L, Location A, Location B, Location C, Location D, Location L to Location D, stop at any location between L-D (the included angle between L~D is the same). The air deflector will be closed at 0 Location, and the swinging is effectual only on condition that setting the swinging order and the inner fan is running.

  • Page 34: Installation Manual

    Installation Manual 7. Installation Manual 7.1 Notices for Installation 1.The unit installation work must be done by qualifi ed personnel according to the local rules and this manual. 2.Before installating, please contact with local authorized maintenance center, if unit is not installed by the authorized maintenance center, the malfunction may not solved, due to discommodious contacts.
  • Page 35 Installation Manual 7.1.4 Safety Precautions for Electric Appliances 1.A dedicated power supply circuit should be used in accordance with local electrical safety regulations. 2.Don't drag the power cord with excessive force. 3.The unit should be reliably earthed and connected to an exclusive earth device by the professionals. 4.The air switch must have the functions of magnetic tripping and heat tripping to prevent short circuit and overload.

  • Page 36: Installation Dimension Diagram

    Installation Manual 7.2 Installation Dimension Diagram Space to the ceiling 15 cm Above Space to the wall 15 cm Above 15 cm Above Space to the wall 300 cm Above Above Air outlet side Space to the floor The dimensions of the space necessary for proper ●...

  • Page 37: Install Indoor Unit

    Installation Manual 7.3 Install Indoor Unit 7.3.1 Installation of Mounting Plate 1.Mounting plate should be installed horizontally. As the water tray's outlet for the indoor unit is two-way type, during installation, the indoor unit should slightly slant to water tray's outlet for smooth drainage of condensate. 2.Fix the mounting plate on the wall with screws.

  • Page 38: Install Outdoor Unit

    Installation Manual NOTE: All wires between indoor and outdoor units must be connected by the qualifi ed electric contractor. Electric wires must be connected correctly. Improper connection may cause malfunction. Tighten the terminal screws securely. After tightening the screws, pull the wire slightly to confi rm whether it is fi rm or not. Make sure that the electric connections are earthed properly to prevent electric shock.

  • Page 39: Check After Installation And Test Operation

    Installation Manual 7.4.2 Air Purging and Leakage Test 1. Connect charging hose of manifold valve to charge end of low pressure Liquid pipe Vacuum valve (bothhigh/low pressure valves must be tightly shut). Gas pipe gauge 2. Connect joint of charging hose to vacuum pump. Valve 3.

  • Page 40: Installation And Maintenance Of Healthy Filter

    Installation Manual 7.5.1 Check after Installation 1.Before Operation Test (1)Do not switch on power before installation is fi nished completely. (2)Electric wiring must be connected correctly and securely. (3)Cut-off valves of the connection pipes should be opened. (4)All the impurities such as scraps and thrums must be cleared from the unit. 2.Operation Test Method (1)Switch on power and press ON/OFF button on the remote controller to start operation.

  • Page 41: Exploded Views And Parts List

    Exploded Views and Parts List 8. Exploded Views and Parts List 8.1 Indoor Unit...
  • Page 42 Exploded Views and Parts List Part Code Description GWH09RB-K3DNA2C/I GWH12RB-K3DNA2C/I Product code CB301N01100 CB301N01200 Front Panel Assy 20022122 20022122 Display Board 30565137 30565137 Filter Sub-Assy 1112220403 1112220403 Screw Cover 242520179 242520179 Front Case Sub-assy 2001279001 2001279001 Air Louver 1 1051215603...
  • Page 43 Exploded Views and Parts List Part Code Description GWH09RB-K3DNA3C/I GWH12RB-K3DNA3C/I Product code CB302N00900 CB302N01000 Front Panel Assy 20012858 20012858 Display Board 30565137 30565137 Filter Sub-Assy 1112220403 1112220403 Screw Cover 24252016 24252016 Front Case Sub-assy 20012790 20012790 Air Louver 1 1051215603 1051215603 Air Louver 2 1051215503...
  • Page 44 Exploded Views and Parts List Part Code Description GWH09RB-K3DNA5C/I GWH12RB-K3DNA5C/I Product code CB304N00500 CB304N00600 Front Panel Assy 20012948 20012948 Display Board 30565159 30565159 Filter Sub-Assy 1112220403 1112220403 Screw Cover 242520179 242520179 Front Case Sub-assy 2001279001 2001279001 Air Louver 1 1051215603 1051215603 Air Louver 2 1051215503...
  • Page 45 Exploded Views and Parts List PartCode Description GWH09RB-K3DNA8C/I GWH12RB-K3DNA8C/I Product code CB313N00100 CB313N00200 Front Panel Assy 20022516 20022516 Display Board 30565234 30565234 Filter Sub-Assy 1112220403 1112220403 Screw Cover 24252016 24252016 Front Case Sub-assy 20012790 20012790 Air Louver 1 1051215603 1051215603 Air Louver 2 1051215503 1051215503...
  • Page 46 Exploded Views and Parts List Part Code Description GWH09RB-K3DNA2C/I GWH12RB-K3DNA2C/I Product code CB301N01100 CB301N01200 Front Panel Assy 20022122 20022122 Display Board 30565137 30565137 Filter Sub-Assy 1112220403 1112220403 Screw Cover 242520179 242520179 Front Case Sub-assy 2001279001 2001279001 Air Louver 1 1051215603...
  • Page 47 Exploded Views and Parts List Part Code Description GWH09RB-K3DNA3C/I GWH12RB-K3DNA3C/I Product code CB302N00900 CB302N01000 Front Panel Assy 20012858 20012858 Display Board 30565137 30565137 Filter Sub-Assy 1112220403 1112220403 Screw Cover 24252016 24252016 Front Case Sub-assy 20012790 20012790 Air Louver 1 1051215603 1051215603 Air Louver 2 1051215503...
  • Page 48 Exploded Views and Parts List Part Code Description GWH09RB-K3DNA6C/I GWH12RB-K3DNA6C/I Product code CB305N00100 CB305N00200 Front Panel Assy 20022260 20022260 Display Board 30565207 30565207 Filter Sub-Assy 1112220403 1112220403 Screw Cover 242520179 242520179 Front Case Sub-assy 2001279001 2001279001 Air Louver 1 1051215603 1051215603 Air Louver 2 1051215503...

  • Page 49: Outdoor Unit

    Exploded Views and Parts List 8.2 Outdoor Unit GWH09RB-K3DNA3C/O(CB302W00900), GWH12RB-K3DNA3C/O(CB302W01000)
  • Page 50 Exploded Views and Parts List Part Code Description GWH09RB-K3DNA3C/O GWH12RB-K3DNA3C/O Product Code CB302W00900 CB302W01000 Electric Box Assy 02613591 02613588 Electric Box Sub-Assy 02613590 02613589 Main Board 30148761 30148762 Reactor 43130184 43130184 Terminal Board 42011113 420111041 Wire Clamp 71010003 71010003 Front Grill 22413008 22413008 Front Panel...
  • Page 51 Exploded Views and Parts List GWH09RB-K3DNA3C/O(CB302W00901), GWH12RB-K3DNA3C/O(CB302W01001)
  • Page 52 Exploded Views and Parts List Part Code Description GWH09RB-K3DNA3C/O GWH12RB-K3DNA3C/O Product Code CB302W00900 CB302W01000 Electric Box Assy 02613591 02613588 Electric Box Sub-Assy 02613590 02613589 Main Board 30148761 30148762 Reactor 43130184 43130184 Terminal Board 42011113 420111041 Wire Clamp 71010003 71010003 Front Grill 22413027 22413027 Front Panel...

  • Page 53: Troubleshooting

    Troubleshooting 9. Troubleshooting 9.1 Malfunction Analysis Note:When replacing the controller, make sure insert the wire jumper into the new controller, otherwire the unit will display C5. Measure insulation resistance The breaker trips at once when it to ground to see if there is any is set to “ON”.
  • Page 54 Troubleshooting Improper set of temperature Adjust set temperature If cooling (heating) load is Check the forecasted load of cooling (heating) proper heck and fill the leakage, then The refrigerant has leakage or is vacuumize it and supplement the re- insufficient frigerant as required Leakage between the high pres- Replace the compressor...
  • Page 55 Troubleshooting The indoor fan motor is burned or breaks or has the heat protector Replace the fan motor or the defective part. malfunction. The built-in heat protector of the Replace the fan motor The fan does not motor breaks frequently because the run when it is set motor is abnormal.
  • Page 56 Troubleshooting The torque of the swing motor is not enough First, check whether the connection is Wrong connection The swing fan wrong. If no, replace the parts does not run. The controller is damaged(IC2003 is damaged, the swing relay can not close, etc) C o n t r o l l e r m a l f u n c t i o n ( I C 2 0 0 3 Change controller...

  • Page 57: Flashing Led Of Indoor/Outdoor Unit And Primary Judgement

    Troubleshooting 9.2 Flashing LED of Indoor/Outdoor Unit and Primary Judgement Flashing LED of Indoor/Outdoor Unit and Primary Judgement Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8...
  • Page 58 Troubleshooting Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s...
  • Page 59 Troubleshooting Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s...
  • Page 60 Troubleshooting Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s...
  • Page 61 Troubleshooting Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s...
  • Page 62 Troubleshooting Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code 0.5s...
  • Page 63 Troubleshooting Display Method of Indoor Unit Display Method of Outdoor Unit Indicator Display (during Indicator has 3 kinds of display blinking, ON 0.5s and OFF status and during blinking, ON Dual-8 Malfunction A/C status Possible Causes 0.5s) 0.5s and OFF 0.5s Code Name Operation...

  • Page 64: How To Check Simply The Main Part

    Troubleshooting 9.3 How to Check Simply the Main Part (1) Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel) Main Check Pionts: Use AC voltmeter to check if the voltage between terminal L and N on the wiring board id within 210VAC~240VAC. If the reactor (L) is correctly connected? If the connection is loose or fallen? If the reactor (L) is damaged? Fault diagnosis process: Turn on the unit...
  • Page 65 Troubleshooting (2) IPM Protection, Out-of step Fault,Compressor Phase Over current(AP1 below refers to the outdoor control panel) Mainly detect: If the connection between control panel AP1 and compressor COMP is secure? If loose? If the connection is in correct order? If the voltage input of the machine is within normal range? (Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT) If the compressor coil resistance is mormal? If the insulation of compressor coil against the coppertube is in good condition?
  • Page 66 Troubleshooting (3) High temperature and overload protection diagnosis (AP1 here in after refers to the control board of the outdoor unit) Mainly detect: Is outdoor ambienttemperature in normal range? After the outdoor and indoor fans operating normally? Is the heat dissipation environment inside and outside the unit is good? Overheat and high temperature protection Normal protection, please operate it after the...
  • Page 67 Troubleshooting (4) Start-up failure(following AP1 for outdoor unit control board) Mainly detect: Whether the compressor wiring is connected correct? Is time for compressor stopping enough? Is compressor broken? Power on the unit Is stop time of the compressor Restart it up after 3 minutes longer than 3 minutes? Does startup fail? Are the wires for the compressor connected...
  • Page 68 Troubleshooting (5) Out of step diagnosis for the compressor (AP1 hereunafter refers ti the control board of the outdoor unit) Main detect: Whether the system pressure is too high? Whether the input voltage is too low? Out of step occurs in Out of step occurs once the operation unit is powered on.
  • Page 69 Troubleshooting (6) Overload and air exhaust malfuntion diagnosis (following AP1 for outdoor unit unit control board) Mainly detect: Wether the PMV is connected well or not? Is PMV damaged? Is refrigerant leaked? 20 minutes after the complete unit is powered o ff Is the terminal FA for the Connect the wires correctly...
  • Page 70 Troubleshooting (7) Power factor correct or (PFC) fault (a fault of outdoor unit)(AP1 here in after refers to the control board of the outdoor unit) Start Check wiring of the reactor (L) of the outdoor unit and the PFC capacitor Replace it as per the Whether there is any wiring diagram and...
  • Page 71 Troubleshooting (8) Communication malfunction:(following AP1 for outdoor unit control board) Mainly detect: Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, If is there any damage? Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? The flow chart fir malfunction detect: Start Did the equipment operate...
  • Page 72 Troubleshooting Appendix Appendix 1: Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp. Resistance(k ) Temp. Resistance(k ) Temp. Resistance(k ) Temp. Resistance(k ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009 16.39 3.454 0.98 108.7...
  • Page 73 Troubleshooting Appendix 2: Resistance Table of Outdoor and Indoor Tube Temperature Sensors(20K) Temp Resistance(k ) Temp Resistance(k ) Temp Resistance(k ) Temp Resistance(k ) 181.4 25.01 5.13 1.427 171.4 23.9 4.948 1.386 162.1 22.85 4.773 1.346 153.3 21.85 4.605 1.307 20.9 4.443 1.269...
  • Page 74 Troubleshooting Appendix 3: Resistance Table of Outdoor Discharge Temperature Sensor(50K) Temp Resistance(k ) Temp. Resistance(k ) Temp. Resistance(k ) Temp. Resistance(k ) 853.5 18.34 4.754 799.8 93.42 17.65 4.609 89.07 16.99 4.469 703.8 84.95 16.36 4.334 660.8 81.05 15.75 4.204 620.8 77.35 15.17...

  • Page 75: Removal Procedure

    Removal Procedure 10. Removal Procedure 10.1 Removal Procedure of Indoor Unit Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembly. Take A3 panel example. 1. Before disassembly of the unit 2.
  • Page 76 Removal Procedure 3. Remove display and panel display Remove screws on display and then remove the display. screw front panel assy rotation shaft Quit the rotation shaft of panel from groove, and then remove the panel. 4. Remove electric box cover 2 screw Remove screws connecting electric box cover 2 and front case, and then remove the electric box...
  • Page 77 Removal Procedure 5. Remove front case Remove screws connecting front case and bottom case. screw clasp Open screw cover by hand, remove other 3 screws, loosen clasps connecting front case and bottom case and then remove the front case. 6. Remove swing blade Remove 10 clasps connecting swing blade and bottom case.
  • Page 78 Removal Procedure 7. Remove electric box indoor temperature sensor Pull out the indoor temperature sensor. electric box cover Remove screws connecting electric box and bottom case, loosen clasps, remove screws connecting earthing wire and evaporator, and then remove the electric box. electric box 8.
  • Page 79 Removal Procedure 9. Remove cross flow blade and motor Remove screws on stepping motor, and then remove the stepping motor. stepping motor Remove 4 screws connecting motor press plate and bottom case, and then remove motor press plate. motor press plate Remove cross flow blade and motor.

  • Page 80: Removal Procedure Of Outdoor Unit

    Removal Procedure 10.2 Removal Procedure of Outdoor Unit Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembly. Take GWH09RB-K3DNA3C/O(CB302W00900), GWH12RB-K3DNA3C/O(CB302W01000) for example. Remove big handle Before disassembly Remove 1 connection screw fixing big hand leand then remove the big handle.
  • Page 81 Removal Procedure 3. Remove front grill and front panel Remove 2 connection screws between front grill and front panel. Then remove front panel. Remove 5 connection screws among front panel, chassis and motor support. Then remove front panel. front grill front panel 4.
  • Page 82 Removal Procedure Remove electric box assy Electric box assy Remove the 2 screws fixing the cover of electric box. Lift to remove the cover. Loosen the wire and disconnect the terminal. Lift to remove the electric box assy. 7. Disassemble 4-way Valve Assy Unscrew the fastening nut of the 4-way Valve 4-way Valve Assy Assy coil and remove the coil.
  • Page 83 Removal Procedure 9. Disassemble motor and motor support Motor support Remove the 4 tapping screws fixing the motor. Pull out the lead-out wire and remove the Motor motor. Remove the 2 tapping screws fixing the motor support. Lift motor support to re- move it.
  • Page 84 Removal Procedure 11. Disassemble Compressor Remove the 2 screws fixing the gas valve. Unsolder the welding spot connecting gas valve and air return pipe and remove the gas valve. (Note: it is necessary to warp the gas valve when unsoldering the welding spot.) Remove the 2 Liquid valve screws fixing liquid valve.
  • Page 85 Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China, 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 E-mail: gree@gree.com.cn www.gree.com For continuous improvement in the products, Gree reserves the right to modidy the product specification and appearance in this manual without notice and without incurring any obligations.

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