Gree GWH07AAAXA-K3NNA5A Service Manual
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Gree GWH07AAAXA-K3NNA5A Service Manual

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Service Manual
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

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Summary of Contents for Gree GWH07AAAXA-K3NNA5A

  • Page 1 Change for life Service Manual GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI...

  • Page 2: Table Of Contents

    Table of Contents Service Manual Part I : Technical Information ........1 1. Summary ................. 1 2. Specifications ............... 4 2.1 Specification Sheet ....................4 2.2 Capacity Variation Ratio According to Temperature .........16 2.3 Cooling and Heating Data Sheet in Rated Frequency .......17 3.
  • Page 3 Service Manual 9. Maintenance ..............48 9.1 Error Code List ......................48 9.2 Procedure of Troubleshooting ................51 9.3 Troubleshooting for Normal Malfunction ............61 10. Exploded View and Parts List ......63 10.1 Indoor Unit ......................63 10.2 Outdoor Unit ......................71 11. Removal Procedure ..........

  • Page 4: Part I : Technical Information

    1. Summary Service Manual Indoor Unit A1 panel A2 panel A3 Panel: A4 Panel: A5 Panel: A6 Panel: Outdoor Unit: GWH07AGAXA-K3NNA1A/O GWH12AGBXB-K3NNA1B/O GWH09AGAXA-K3NNA1A/O GWH18AGCXD-K3NNA1B/O GWH24AADXE-K3NNA1A/O Technical Information...
  • Page 5 Service Manual GWH28AGEXF-K3NNA1A/O Remote Controller: YAW1F Technical Information...
  • Page 6 Model list: Indoor product Outdoor product Remote Model Product code Indoor model Outdoor model code code Controller GWH07AAAXA-K3NNA5A CA488007900 GWH07AAAXA-K3NNA5A/I CA488N07900 GWH07AAAXA-K3NNA2A CA477009801 GWH07AAAXA-K3NNA2A/I CA477N09801 GWH07AAAXA-K3NNA3A CA478007100 GWH07AAAXA-K3NNA3A/I CA478N07100 GWH07AAAXA-K3NNA2A CA477009800 GWH07AAAXA-K3NNA2A/I CA477N09800 GWH07AGAXA-K3NNA1A/O CA385W11300 GWH07AAAXA-K3NNA1A CA476012500 GWH07AAAXA-K3NNA1A/I CA476N12500 GWH07AAAXA-K3NNA3A CA478007101 GWH07AAAXA-K3NNA3A/I...

  • Page 7: Specifications

    2. Specifications Service Manual 2.1 Specification Sheet 1.GWH07AAAXA-K3NNA5A 2.GWH07AAAXA-K3NNA2A 3.GWH07AAAXA-K3NNA3A 4.GWH07AAAXA-K3NNA2A Model 5.GWH07AAAXA-K3NNA1A 6.GWH07AAAXA-K3NNA3A 7.GWH07AAAXA-K3NNA4A 1.CA488007900 2.CA477009801 3.CA478007100 4.CA477009800 Product Code 5.CA476012500 6.CA478007101 7.CA479007200 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 2250 Heating Capacity...
  • Page 8 Service Manual Outdoor Unit Model GWH07AGAXA-K3NNA1A/O Outdoor Unit Product Code CA385W11300 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model QXA-A081T170 Compressor Oil Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input Compressor Overload Protector UP3-MC0(MC0L) Throttling Method Capillary Set Temperature Range ºC 16~30 Cooling Operation Ambient Temperature Range...
  • Page 9 Service Manual 1.GWH09AAAXA-K3NNA2A 2.GWH09AAAXA-K3NNA3A 3.GWH09AAAXA-K3NNA5A 4.GWH09AAAXA-K3NNA2A Model 5.GWH09AAAXA-K3NNA1A 6.GWH09AAAXA-K3NNA3A 7.GWH09AAAXA-K3NNA1A 8.GWH09AAAXA-K3NNA4A 9.GWH09AAAXA-K3NNA4A 10.GWH09AAAXA-K3NNA6A 1.CA477009700 2.CA478007300 3.CA488008000 4.CA477009701 Product Code 5.CA476012401 6.CA478007301 7.CA476012400 8.CA479007000 9.CA479007001 10.CA399002700 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 2550 Heating Capacity 2650 Cooling Power Input...
  • Page 10 Service Manual Outdoor Unit Model GWH09AGAXA-K3NNA1A/O Outdoor Unit Product Code CA385W12800 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO,LTD. Compressor Model QXF-B095T170 Compressor Oil FW68DA or equivalent Compressor Type Rotary Compressor LRA. 19.4 Compressor RLA Compressor Power Input Compressor Overload Protector HPA-420 Throttling Method Capillary Set Temperature Range...
  • Page 11 Service Manual 1.GWH12AABXB-K3NNA2B 2.GWH12AABXB-K3NNA5B Model 3.GWH12AABXB-K3NNA3B 4.GWH12AABXB-K3NNA6B 5.GWH12AABXB-K3NNA4B 1.CA477009600 2.CA488007801/CA488007800 3.CA478007200/ Product Code CA478007201 4.CA399002500 5.CA479007100/CA479007101 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 3250 Heating Capacity 3400 Cooling Power Input 1009 Heating Power Input Cooling Power Current Heating Power Current Rated Input...
  • Page 12 Service Manual Outdoor Unit Model GWH12AGBXB-K3NNA1B/O Outdoor Unit Product Code CA385W11400 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO,LTD. Compressor Model QXA-B120C170 Compressor Oil RB 68EP or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input Compressor Overload Protector HPA-522A Throttling Method Capillary Set Temperature Range...
  • Page 13 Service Manual 1.GWH18AACXD-K3NNA1B 2.GWH18AACXD-K3NNA3B Model 3.GWH18AACXD-K3NNA2B 4.GWH18AACXD-K3NNA6B 5.GWH18AACXD-K3NNA4B 6.GWH18AACXD-K3NNA5B 1.CA476011800/CA476011801 2.CA478006800/CA478006801 Product Code 3.CA477009300/CA477009301 4.CA399002300 5.CA479006700/CA479006701 6.CA488007700/CA488007701 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 4800 Heating Capacity 5158 Cooling Power Input 1477 Heating Power Input 1428 Cooling Power Current 6.62...
  • Page 14 Service Manual Outdoor Unit Model GWH18AGCXD-K3NNA1B/O Outdoor Unit Product Code CA385W10100 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO. LTD. Compressor Model QXA-D19F070 Compressor Oil ATMOS-RB68EP or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input 1510 Compressor Overload Protector UP3-06 Throttling Method Capillary...
  • Page 15 Service Manual 1.GWH24AADXE-K3NNA1A 2.GWH24AADXE-K3NNA2A Model 3.GWH24AADXE-K3NNA3A 4.GWH24AADXE-K3NNA5A 5.GWH24AADXE-K3NNA6A 6.GWH24AADXE-K3NNA4A 1.CA476011400/CA476011401 2.CA477009500/CA477009501 Product Code 3.CA478006900/CA478006901 4.CA488007600/CA488007601 5.CA399002401 6.CA479006900/CA479006901 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 6155 Heating Capacity 6700 Cooling Power Input 1917 Heating Power Input 1856 Cooling Power Current 8.89...
  • Page 16 Service Manual Outdoor Unit Model GWH24AADXE-K3NNA1A/O Outdoor Unit Product Code CA476W11400 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO. LTD. Compressor Model QXA-D232F070 Compressor Oil FW68DA or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input Compressor Overload Protector Throttling Method Capillary Set Temperature Range ºC...
  • Page 17 Service Manual 1.GWH28AAEXF-K3NNA4A 2.GWH28AAEXF-K3NNA6A Model 3.GWH28AAEXF-K3NNA2A 4.GWH28AAEXF-K3NNA3A 5.GWH28AAEXF-K3NNA1A 1.CA479006800 2.CA399002600 3.CA477009900/CA477009901 Product Code 4.CA478007400 5.CA476012300 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity 8500 Heating Capacity 8900 Cooling Power Input 2615 Heating Power Input 2465 Cooling Power Current Heating Power Current...
  • Page 18 Service Manual Outdoor Unit Model GWH28AGEXF-K3NNA1A/O Outdoor Unit Product Code CA385W12400 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO., LTD. Compressor Model QXAS-E305H070 Compressor Oil RB68EP or FVC68D or FV50S or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA 11.4 Compressor Power Input 2520 Compressor Overload Protector HPD-456...

  • Page 19: Capacity Variation Ratio According To Temperature

    Service Manual 2.2 Capacity Variation Ratio According to Temperature 07K ~ 24K Cooling Heatling Cooling: Heating: Condition Heatin g Condition Cooling Indoor:DB20 °C /WB15°C Indoor:DB27°C/WB19°C Indoor air flow: Super High Indoor air flow:Super High Pipe length: 5m Pipe length:5m 32 33 34 35 36 37 38 39 40 41 42 Outdoor temp.( °C...

  • Page 20: Cooling And Heating Data Sheet In Rated Frequency

    Service Manual 2.3 Cooling and Heating Data Sheet in Rated Frequency Cooling: Rated cooling condition(°C) Pressure of gas pipe connecting Inlet and outlet pipe temperature of (DB/WB) indoor and outdoor unit heat exchanger Fan speed of Fan speed of Model indoor unit outdoor unit Indoor...

  • Page 21: Outline Dimension Diagram

    3. Outline Dimension Diagram Service Manual 3.1 Indoor Unit AAA/AAB Φ55 Φ55 Φ55 Φ55 Φ70 Φ55 Φ70 Φ55 Unit:mm Model 1080 Technical Information...

  • Page 22: Outdoor Unit

    Service Manual 3.2 Outdoor Unit GWH07AGAXA-K3NNA1A/O GWH09AGAXA-K3NNA1A/O Unit:mm GWH12AGBXB-K3NNA1B/O Unit:mm Technical Information...
  • Page 23 Service Manual GWH18AGCXD-K3NNA1B/O Unit:mm GWH24AADXE-K3NNA1A/O Unit:mm Technical Information...
  • Page 24 Service Manual GWH28AGEXF-K3NNA1A/O Unit:mm Technical Information...

  • Page 25: Refrigerant System Diagram

    4. Refrigerant System Diagram COOLING Service Manual Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Suction Accumlator exchanger Compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Capillary Strainer COOLING HEATING Connection pipe specification: Liquid pipe: 1/4"...

  • Page 26: Electrical Part

    5. Electrical Part Service Manual 5.1 Wiring Diagram ● Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name White Green Jumper cap Yellow Brown COMP Compressor Blue Grounding wire YEGN Yellow/Green Black Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ●...
  • Page 27 Service Manual GWH12AABXB-K3NNA2B/I(CA477N09600) GWH12AABXB-K3NNA5B/I(CA488N07801) GWH07AAAXA-K3NNA5A/I(CA488N07900) GWH12AABXB-K3NNA3B/I(CA478N07200) GWH07AAAXA-K3NNA3A/I(CA478N07100) GWH18AACXD-K3NNA1B/I(CA476N11801) GWH18AACXD-K3NNA2B/I(CA477N09301) GWH18AACXD-K3NNA3B/I(CA478N06801) GWH07AAAXA-K3NNA2A/I(CA477N09800) GWH09AAAXA-K3NNA2A/I(CA477N09700) GWH09AAAXA-K3NNA3A/I(CA478N07300) GWH09AAAXA-K3NNA5A/I(CA488N08000) GWH09AAAXA-K3NNA1A/I(CA476N12400) GWH18AACXD-K3NNA4B/I(CA479N06701) GWH18AACXD-K3NNA5B/I(CA488N07701) GWH09AAAXA-K3NNA4A/I(CA479N07001) GWH12AABXB-K3NNA4B/I(CA479N07101) POWER BU(WH) RECEIVER AND TUBE TEMP. ROOM TEMP. DISPLAY BOARD BN(BK) SENSOR SENSOR YEGN(GN) DISPLAY EARTH-PLATE YEGN YEGN DISP2 DISP1 T-SENSOR...
  • Page 28 Service Manual GWH28AAEXF-K3NNA4A/I(CA479N06800) GWH28AAEXF-K3NNA6A/I(CA399N02600) GWH28AAEXF-K3NNA2A/I(CA477N09900) GWH28AAEXF-K3NNA1A/I(CA476N12300) BN(BK) ROOM TUBE BU(WH) RECEIVER AND TEMP. TEMP. DISPLAY BOARD YEGN(GN) SENSOR SENSOR DISPLAY POWER EARTH-PLATE YEGN YEGN DISP2 L101 EVAPORATOR T-SENSOR DISP1 N(1) COMP JUMP L(AC-L) PRINTED CIRCUIT BOARD 4WAY (SWING) SWING-UD OFAN PG PGF CONNECTING HEALTH-N...
  • Page 29 Service Manual ● Outdoor Unit GWH12AGBXB-K3NNA1B/O(CA385W11400) GWH07AGAXA-K3NNA1A/O(CA385W11300) GWH09AGAXA-K3NNA1A/O(CA385W12800) 60000706130202 GWH18AGCXD-K3NNA1B/O(CA385W10100) COMP. COMP R(M) FAN MOTOR CAP. (BU) YEGN CAP. N(1) 4-WAY VALVE TERMINAL BLOCK 600007063844 Technical Information...
  • Page 30 Service Manual GWH24AADXE-K3NNA1A/O(CA476W11400) COMP. COMP R(M) FAN MOTOR CAP. (BU) YEGN CAP. N(1) 4-WAY VALVE TERMINAL BLOCK 60000706384401 GWH28AGEXF-K3NNA1A/O(CA385W12400) COMP. FAN MOTOR COMP R(M) BU BU (BK) CAP. CAP. YEGN L1/6 A2/1 T1/4 N(1) A1/0 4-WAY VALVE TERMINAL BLOCK 60000706168204 These wiring diagrams are subject to change without notice;...

  • Page 31: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram ● Indoor Unit 07/09/12K Name Name Wiring terminal of 4-way valve Wiring terminal of compressor (heat pump unit) Fuse Auto button Fan capacitor Feedback wiring terminal of PG motor Wiring terminal of up&down swing Neutral wire terminal of cold plasma motor Terminal of neutral wire...
  • Page 32 Service Manual 24/28K Name Name Compressor interface Left&right swing interface Interface of live wire Needle stand for WiFi Fuse Interface of temperature sensor Neutral wire Interface of gate control Interface of health function neutral wire Interface of display board (only for the mode with this function) Interface of PG motor Jumper cap Interface of live wire of cold plasma...
  • Page 33 Service Manual Top view Compressor Interface of p Interface of p Interface of c (only for the PG motor int Terminal of o Interface of 4 mode with th Interface of c (only for the Up&down sw PG motor fee Left&right sw Jumper cap Temperature...

  • Page 34: Function And Control

    6. Function and Control Service Manual 6.1 Remote Controller Introduction of YAW1F Buttons on remote controller 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.
  • Page 35 Service Manual Press this button to set up & down swing angle. press this button again to cancel timer. button button Press this button in COOL or DRY mode to turn on X-fan function. Under Cool, Dry or Heat mode, press this button to turn on Sleep function.
  • Page 36 Service Manual ● Also, when you set H1 mode, when you change to heating mode, H1 will display 3 times on the remote controller and then Auto clean function disappear. U n d e r u n i t o ff s t a t u s , h o l d " M O D E " a n d " FA N " b u t t o n s Replacement of batteries in remote controller simultaneously for 5s to turn on or turn off the auto clean function.

  • Page 37: Brief Description Of Modes And Functions

    Service Manual 6.2 Brief Description of Modes and Functions 1. Summary (1) Buzzer When the controller is energized or receives signal from button (emergency operation switch on air conditioner) or remote control- ler, the buzzer will give out a beep. (2) Temperature parameter ◆...
  • Page 38 Service Manual ◆ When Tamb. >Tset+2℃ , the system starts drying and cooling. ① Operation conditioner and process for heating mode In this case, the compressor and the ODU fan motor operate, and ◆ When Tamb-Tcompensation≤Tpreset-1 ℃ , unit will operate in the IDU fan motor operates at low speed.
  • Page 39 Service Manual During operation of IDU fan motor, if controller detected that the After pressing this button, the system will operate according under rotation speed of IDU fan motor less than 300/min or stop rotation, auto mode and the IDU fan motor operates at auto speed. Swing the motor operates abnormally.
  • Page 40 Service Manual ② If swing function is set when turning on the unit, the horizontal louver will swing between L and D. Horizontal louver has 7 swing statuses: ◆ Stay at position L: control by remote controller: ◆ Stay at position A: control by remote controller: ◆...

  • Page 41: Part Ii : Installation And Maintenance

    7. Notes for Installation and Maintenance Service Manual Safety Precautions: Important! be installed in the circuit. The air switch should be all-pole parting and the contact parting distance should be more than 3mm. Please read the safety precautions carefully before installa- tion and maintenance.
  • Page 42 Service Manual Safety Precautions for Installing and Relocating the Unit: To ensure safety, please be mindful of the following precautions. WARNINGS 1. When installing or relocating the unit, be sure to keep the If compressor starts running when stop valve is open and refrigerant circuit free from air or substances other than the connection pipe is not yet connected, air will be sucked in and specified refrigerant.
  • Page 43 Service Manual Main Tools for Installation and Maintenance Level meter Measuring tape Screw driver Impact drill Drill head Electric drill Electroprobe Universal meter Inner hexagon Electronic Torque wrench Open-end wrench spanner leakage detector Vacuum pump Pressure meter Pipe pliers Pipe pliers Pipe cutter Pipe expander Pipe bender...

  • Page 44: Installation

    8. Installation Service Manual 8.1 Installation Dimension Diagram Space to the wall At least 15cm Space to the wall At least 15cm Space to the obstruction At least 50cm Drainage pipe Installation and Maintenance...
  • Page 45 Service Manual Installation Procedures Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install the support of outdoor unit Install wall-mounting (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Fix outdoor unit...

  • Page 46: Installation Parts-Checking

    Service Manual 8.2 Installation Parts-checking unit. (4) Make sure that the installation follows the requirement of Name installation dimension diagram. Indoor unit (5) Select a location which is out of reach for children and far away from animals or plants. If it is unavoidable, please add Outdoor unit fence for safety purpose.
  • Page 47 Service Manual 2. Install Wall-mounting Frame (1) Hang the wall-mounting frame on the wall; adjust it in 5. Connect the Pipe of Indoor Unit horizontal position with the level meter and then point out the (1) Aim the pipe joint at the corresponding bellmouth. (As show in screw fixing holes on the wall.

  • Page 48: Installation Of Outdoor Unit

    Service Manual the band. (As show in Fig.14) Drain hose (2) Reserve a certain length of drain hose and power cord for installation when binding them. When binding to a certain degree, separate the indoor power and then separate the drain hose. (As show in Fig.15) Insulating pipe (3) Bind them evenly.
  • Page 49 Service Manual (2) Fix the support of outdoor unit on the selected location with (3) Pretightening the union nut with hand. expansion screws. (4) Tighten the union nut with torque wrench . (1) Take sufficient protective measures when installing the Refer to the following table for wrench moment of force: outdoor unit.

  • Page 50: Vacuum Pumping And Leak Detection

    Service Manual 8.8 Check after Installation and Test be curved, raised and fluctuant, etc.(As show in Fig.26) (3) The water outlet cant be placed in water in order to drain operation smoothly.(As show in Fig.27) 1. Check after Installation Check according to the following requirement after finishing installation.

  • Page 51: Maintenance

    9. Maintenance Service Manual 9.1 Error Code List Display Method of Indoor Unit Malfunction Name A/C status Possible Causes Dual-8 Code Display 1. The wiring terminal between indoor The unit will stop operation as it reaches ambient temperature sensor and controller the temperature point.
  • Page 52 Service Manual Display Method of Indoor Unit Malfunction Name A/C status Possible Causes Dual-8 Code Display 1. The wiring terminal between outdoor condenser temperature sensor and The unit will stop operation as it reaches maiboard is loosened or poorly contacted. the temperature point.
  • Page 53 Service Manual Display Method of Indoor Unit Malfunction Name A/C status Possible Causes Dual-8 Code Display 1. The communication line is not connected tightly or poorly contacted. Poor contact of any line may cause Communi- During cooling operation, compressor stops communication malfunction.

  • Page 54: Procedure Of Troubleshooting

    Service Manual 9.2 Procedure of Troubleshooting 1. Malfunction of Temperature Sensor F1, F2 Main detection points: (1) connection terminal (2) temperature sensor (3) main board Malfunction diagnosis process: Start Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? Insert the temperature sensor tightly...
  • Page 55 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Main detection points: ● SmoothlyIs the control terminal of PG motor connected tightly? ● SmoothlyIs the feedback interface of PG motor connected tightly? ● The fan motor can't operate? ●...
  • Page 56 Service Manual 3. Malfunction of Protection of Jumper Cap C5 Main detection points: ● Is there jumper cap on the mainboard? ● Is the jumper cap inserted correctly and tightly? ● The jumper is broken? ● The motor is broken? ●...
  • Page 57 Service Manual 4. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8 Main detection points: ● Instant energization afte de-energization while the capacitordischarges slowly? ● The zero-cross detectioncircuit of the mainboard is defined abnormal? Malfunction diagnosis process: Start Turn power off for 1minute,the turn...
  • Page 58 Service Manual 5. High pressure protection (E1) Start Are the display panel and main board Connect the display panel with the main board well Malfunction is eliminated. connected tightly? Are the OVC terminal on the main board connected Connect the OVC terminal on the main board with the high well with the high pressure switch on the complete Malfunction is eliminated.
  • Page 59 Service Manual 6. Low pressure protection of compressor (E3) Start Is the terminal Re-insert it tightly of low pressure switch to ensure reliable inserted well ? contact. Is the malfunction eliminated ? Is the higher than the acting Add refrigerant . value of the low pressure switch? Is the...
  • Page 60 Service Manual 7. Overload protection of compressor H3, high discharge temperature protection of compressor E4 (AP1 hereinafter refers to the control board of the outdoor unit) Main detection points: (1) electronic expansion valve (2) expansion valve terminal (3) charging amount of refrigerant (4) overload protector Malfunction diagnosis process: After the unit de-energized...
  • Page 61 Service Manual 8. Malfunction of Overcurrent Protection E5 Main detection points: ● Is the supply voltage unstable with big fluctuation? ● Is the supply voltage too low with overload? ● Hardware trouble? Malfunction diagnosis process: Start Normal fluctuation should be within 10 % Is malfunction Is the supply voltage unstable of the rated voltage on the nameplate...
  • Page 62 Service Manual 9. Communication malfunction E6 Main detection points: ● Check if the connection wire and the built-in wiring of indoor and outdoor unit are connected well and without damage; ● If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged? Malfunction diagnosis process: Start If the unit is operation...
  • Page 63 Service Manual 10. High temperature and overload protection (E8)(AP1 below means control board of outdoor unit) Main detection points: (1) outdoor temperature (2) fan (3)air inlet and air outlet of indoor/outdoor unit Malfunction diagnosis process: Overload protection, high temperature prevention protection Normal protection.

  • Page 64: Troubleshooting For Normal Malfunction

    Service Manual 9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether it's due to power failure. If yes, No power supply, or poor connection After energization, operation indicator isnt bright wait for power recovery.
  • Page 65 Service Manual 4. ODU Fan Motor can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Connect wires according to wiring diagram to Wrong wire connection, or poor Check the wiring status according to circuit diagram make sure all wiring terminals are connected connection firmly Measure the capacity of fan capacitor with an...

  • Page 66: Exploded View And Parts List

    10. Exploded View and Parts List Service Manual 10.1 Indoor Unit AAA/AAB The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 67 Service Manual Description Front Panel Display Board Filter Sub-Assy Screw Cover Front Case Guide Louver Axile Bush Helicoid Tongue Air Louver Left Axile Bush Rear Case assy Cross Flow Fan O-Gasket sub-assy of Bearing Ring of Bearing Evaporator Support Evaporator Assy Fan Motor Wall Mounting Frame Sub-assy Connecting pipe clamp...
  • Page 68 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 69 Service Manual Description Front Panel Display Board Front Case Helicoid Tongue Left Axile Bush Rear Case assy Drainage Hose Ring of Bearing O-Gasket sub-assy of Bearing Evaporator Support Evaporator Assy Wall Mounting Frame Cross Flow Fan Fan Motor Connecting pipe clamp Rubber Plug (Water Tray) Stepping Motor Crank...
  • Page 70 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 71 Service Manual Description Decorative Strip Front Panel Assy Display Board Filter Sub-Assy Decorative Board (Left) Front Case Guide Louver Axile Bush Air Louver 1 Helicoid Tongue Left Axile Bush Rear Case assy Rubber Plug (Water Tray) O-Gasket of Cross Fan Bearing Ring of Bearing Evaporator Support Evaporator Assy...
  • Page 72 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 73 Service Manual Description Front Panel Display Board Filter Sub-Assy Front Case Guide Louver Axile Bush Air Louver Helicoid Tongue Left Axile Bush Rear Case assy Rubber Plug (Water Tray) O-Gasket of Cross Fan Bearing Ring of Bearing Evaporator Support Evaporator Assy Cross Flow Fan Fan Motor Motor Press Plate...

  • Page 74: Outdoor Unit

    Service Manual 10.2 Outdoor Unit 07/09K The component picture is only for reference; please refer to the actual product. Description Description Description Top Cover Sub-Assy Earthing Plate Sub-assy Cabinet Top cover Terminal Board Fan Motor Capacitor CBB61S Handle Front Grill Capacitor CBB65 Right Side Plate Axial Flow Fan...
  • Page 75 Service Manual GWH12AGBXB-K3NNA1B/O The component picture is only for reference; please refer to the actual product. Description Description Description Top Cover Assy Right Side Plate Lelt Side Plate Condenser Assy Valve Support Clapboard Rear Grill Compressor and Fittings Electric Box Assy 4-way Valve Assy Chassis Sub-assy Terminal Board...
  • Page 76 Service Manual GWH18AGCXD-K3NNA1B/O The component is only for rererence;please refer to the actual product Description Description Description Front Grill Cut-off valve 1/2(N) Throttle Valve Sub-assy Cabinet Cut-off valve 1/4(N) Terminal Board Axial Flow Fan Handle (Right) Electric Box Assy Fan Motor Right Side Assy Chassis Sub-assy 4-Way Valve Assy...
  • Page 77 Service Manual GWH24AADXE-K3NNA1A/O The component picture is only for reference; please refer to the actual product. Description Description Description Front Panel Assy Strainer (fork shape) Condenser Assy Front grill Capillary assembly Condenser right side panel Front Panel Right Side Plate Assy Motor Support Axial Flow Fan Valve Support...
  • Page 78 Service Manual 9 10 The component picture is only for reference; please refer to the actual product. Description Description Description Front Grill Valve Support Condenser Assy Front Panel Cut-off valve 1/4(N) Clapboard Assy Axial Flow Fan Cut-off valve 1/2(N) Motor Support Chassis Sub-assy Valve Cover Motor...

  • Page 79: Removal Procedure

    11. Removal Procedure Service Manual 11.1 Removal Procedure of Indoor Unit Caution: discharge the refrigerant completely before removal. 07/09/12K Step Procedure 1.Remove filter Panel Open the panel. Clasps Loosen the clasp shown in the fig and then pull the left filter and right filer outwards to remove them.
  • Page 80 Service Manual Step Procedure Panel 3.Remove panel Display Open the front panel; separate the panel rotation shaft Front panel from the groove fixing the front panel and then removes the front panel. Note: The display of some models is fixed on the panel; Panel rotation unscrew the screws fixing the display on the panel before removing the panel.
  • Page 81 Service Manual Step Procedure electric box 6.Remove electric box assy Remove the screw fixing electric box assy. clasps Step motor Indoor tube Grounding temperature sensor screw Electric box assy Main board ① Cut off the wire binder and pull out the indoor tube temperature sensor.
  • Page 82 Service Manual Step Procedure 7.Remove evaporator assy Remove 3 screws fixing evaporator assy. Screw At the back of the unit, Loosen the clasp,connection pipe clamp and then remove the connection pipe Connection pipe clamp clamp. Clasp Groove Rear Case assy First remove the left side of evaporator from the groove of bottom shell and then remove the right side from the clasp on the bottom shell.
  • Page 83 Service Manual Step Procedure 8.Remove motor and cross flow blade Motor clasp Remove 3 screws fixing motor clamp and then remove the motor clamp. Screws Cross flow Motor Remove the at the connection place of cross flow blade and motor; lift the motor and cross flow blade upwards to remove them.
  • Page 84 Service Manual 18/24/28K Step Procedure 1.Remove filter Panel Open the panel. Clasps Loosen the clasp shown in the fig and then pull the left filter and right filer outwards to remove them. Left filter and right filer 2.Remove horizontal louver Push out the axile bush on horizontal louver.
  • Page 85 Service Manual Step Procedure Panel 3.Remove panel Display Open the front panel; separate the panel rotation shaft from the groove fixing the front panel and then removes the front panel. Note: The display of some models is fixed on the panel; Panel rotation unscrew the screws fixing the display on the panel Screws...
  • Page 86 Service Manual Step Procedure Screws 6.Remove electric box assy clasps Loosen the connection clasps between Cold plasma generator and electric box, and then remove the cold plasma Shield cover of Electric Electric box generator. Step motor Indoor tube Grounding temperature sensor screw Electric box assy Main board...
  • Page 87 Service Manual Step Procedure 7.Remove evaporator assy Remove 3 screws fixing evaporator assy. Screw At the back of the unit, Loosen the clasp,connection pipe clamp and then remove the connection pipe Connection pipe clamp clamp. Clasp Groove Rear Case assy First remove the left side of evaporator from the groove of bottom shell and then remove the right side from the clasp on the bottom shell.
  • Page 88 Service Manual Step Procedure 8.Remove motor and cross flow blade Motor clasp Remove 3 screws fixing motor clamp and then remove the motor clamp. Screws Cross flow Motor Remove the at the connection place of cross flow blade and motor; lift the motor and cross flow blade upwards to remove them.

  • Page 89: Removal Procedure Of Outdoor Unit

    Service Manual 11.2 Removal Procedure of Outdoor Unit Caution: discharge the refrigerant completely before removal. GWH07AGAXA-K3NNA1A/O GWH09AGAXA-K3NNA1A/O Step Procedure 1. Before disassembly 2. Remove handle Handle Remove the screws fixing handle and then remove them. 3. Remove top cover Top cover Remove the screws fixing top panel and then remove the top panel.
  • Page 90 Service Manual Step 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. Front panel assy 5. Remove right side plate assy Right side plate assy Rescrew the ground screws, remove the ground wires, loosen the screws fixing terminal board, remove the...
  • Page 91 Service Manual Step Procedure 7. Remove motor support and motor Motor support Remove the screws fixing the motor support and lift the Motor motor support to remove it. Remove the screws fixing the motor and then remove the motor. 8. Remove electric box assy Electric box assy Remove the terminals, lift up and rotate the electrical box assy to the right so that the snaps on the clapboard...
  • Page 92 Service Manual Step Procedure 10. Remove gas valve and liquid valve Remove the valve support bolck, remove the screws fixing the gas valve and the liquid valve,unsolder the welding joint connecting the gas valve and the liquid valve, remove them. Note: Liquid valve Discharge the refrigerant completely befor unsoldering;...
  • Page 93 Service Manual Caution: discharge the refrigerant completely before removal. GWH12AGBXB-K3NNA1B/O Step Procedure 1. Before disassembly 2. Remove handle and valve cover Handle Remove the screws fixing handle, valve cover and then Valve cover remove them. 3. Remove top cover Top cover Remove the screws fixing top panel and then remove the top panel.
  • Page 94 Service Manual Step 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. Front panel assy 5. Remove right side plate assy Right side plate assy Rescrew the ground screws, remove the ground wires, loosen the screws fixing terminal board, remove the...
  • Page 95 Service Manual Step Procedure 7. Remove motor support and motor Motor support Remove the screws fixing the motor support and lift the Motor motor support to remove it. Remove the screws fixing the motor and then remove the motor. 8. Remove electric box assy Electric box assy Remove the terminals, lift up and rotate the electrical box assy to the right so that the snaps on the clapboard...
  • Page 96 Service Manual Step Procedure 10. Remove gas valve and liquid valve Remove the valve support bolck, remove the screws fixing the gas valve and the liquid valve,unsolder the welding joint connecting the gas valve and the liquid valve, remove them. Liquid valve Note: Discharge the refrigerant completely befor unsoldering;...
  • Page 97 Service Manual Caution: discharge the refrigerant completely before removal. GWH18AGCXD-K3NNA1B/O Step Procedure 1. Before disassembly 2. Remove handle and valve cover Handle Remove the screws fixing handle, valve cover and then remove them. Valve cover 3. Remove top cover Top cover Remove the screws fixing top panel and then remove the top panel.
  • Page 98 Service Manual Step 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. Front panel assy 5. Remove right side plate assy Right side plate assy Rescrew the ground screws, remove the ground wires, loosen the screws fixing terminal board, remove the...
  • Page 99 Service Manual Step Procedure 7. Remove motor support and motor Motor support Remove the screws fixing the motor support and lift the Motor motor support to remove it. Remove the screws fixing the motor and then remove the motor. 8. Remove electric box assy Electric box assy Remove the terminals, lift up and rotate the electrical box assy to the right so that the snaps on the clapboard...
  • Page 100 Service Manual Step Procedure 10. Remove gas valve and liquid valve Remove the valve support bolck, remove the screws fixing the gas valve and the liquid valve,unsolder the welding joint connecting the gas valve and the liquid valve, remove them. Liquid valve Note: Discharge the refrigerant completely befor unsoldering;...
  • Page 101 Service Manual Caution: discharge the refrigerant completely before removal. GWH24AADXE-K3NNA1A/O Step Procedure 1. Before disassembly 2. Remove handle and valve cover Handle Remove the screws fixing handle, valve cover and then remove them. Valve cover 3. Remove top cover Top cover Remove the screws fixing top panel and then remove the top panel.
  • Page 102 Service Manual Step 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. Front panel assy 5. Remove right side plate assy Right side plate assy Rescrew the ground screws, remove the ground wires, loosen the screws fixing terminal board, remove the...
  • Page 103 Service Manual Step Procedure 7. Remove motor support and motor Motor support Remove the screws fixing the motor support and lift the Motor motor support to remove it. Remove the screws fixing the motor and then remove the motor. 8. Remove electric box assy Electric box assy Remove the terminals, lift up and rotate the electrical box assy to the right so that the snaps on the clapboard...
  • Page 104 Service Manual Step Procedure 10. Remove gas valve and liquid valve Remove the valve support bolck, remove the screws fixing the gas valve and the liquid valve,unsolder the welding joint connecting the gas valve and the liquid valve, remove them. Liquid valve Note: Discharge the refrigerant completely befor unsoldering;...
  • Page 105 Service Manual Caution: discharge the refrigerant completely before removal. GWH28AGEXF-K3NNA1A/O Step Procedure 1. Before disassembly 2. Remove handle and valve cover Handle Remove the screws fixing handle, valve cover and then remove them. Valve cover 3. Remove top cover Top cover Remove the screws fixing top panel and then remove the top panel.
  • Page 106 Service Manual Step 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. Front panel assy 5. Remove right side plate assy Right side plate assy Rescrew the ground screws, remove the ground wires, loosen the screws fixing terminal board, remove the...
  • Page 107 Service Manual Step Procedure 7. Remove motor support and motor Motor support Remove the screws fixing the motor support and lift the Motor motor support to remove it. Remove the screws fixing the motor and then remove the motor. 8. Remove electric box assy Electric box assy Remove the terminals, lift up and rotate the electrical box assy to the right so that the snaps on the clapboard...
  • Page 108 Service Manual Step Procedure 10. Remove gas valve and liquid valve Remove the valve support bolck, remove the screws fixing the gas valve and the liquid valve,unsolder the welding joint connecting the gas valve and the liquid valve, remove them. Liquid valve Note: Discharge the refrigerant completely befor unsoldering;...

  • Page 109: Appendix

    Appendix: Service Manual 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（℉） （℉） （℃） （℉） （℃）...

  • Page 110: Appendix 3: Pipe Expanding Method

    Service Manual Appendix 3: Pipe Expanding Method Pipe Note: Improper pipe expanding is the main cause of refrigerant leakage.Please expand Pipe cutter the pipe according to the following steps: A:Cut the pip Leaning Uneven Burr ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●...

  • Page 111: Appendix 4: List Of Resistance For Temperature Sensor

    Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 138.10 49.02 18.75 7.97 128.60 44.31 17.14 7.35 115.00 40.09 15.68 6.79 102.90 36.32...
  • Page 112 JF00304950 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 www.gree.com For product improvement, specifications and appearance in this manual are subject to change without prior notice.

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