Gree GWH09QB-K3DNA6G Service Manual

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Change for Life

Service Manual

Models: GWH09QB-K3DNA1G

GWH09QB-K3DNA2G

GWH09QB-K3DNA5G

GWH09QB-K3DNA6G

GWH09QB-K3DNB2G

GWH09QB-K3DNB4G

GWH09QB-K3DNB6G

GWH09QB-K3DNB8G

GWH09QB-K3DNC2G

GWH09QB-K3DNC4G

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

GWH12QC-K3DNA1G

GWH12QC-K3DNA2G

GWH12QC-K3DNA5G

GWH12QC-K3DNA6G

GWH12QC-K3DNB2G

GWH12QC-K3DNB4G

GWH12QC-K3DNB6G

GWH12QC-K3DNB8G

GWH12QC-K3DNC2G

GWH12QC-K3DNC4G

(Refrigerant R410A)

Table of Contents

Troubleshooting

Summary of Contents for Gree GWH09QB-K3DNA6G

Page 1 Change for Life Service Manual Models: GWH09QB-K3DNA1G GWH12QC-K3DNA1G GWH09QB-K3DNA2G GWH12QC-K3DNA2G GWH09QB-K3DNA5G GWH12QC-K3DNA5G GWH09QB-K3DNA6G GWH12QC-K3DNA6G GWH09QB-K3DNB2G GWH12QC-K3DNB2G GWH09QB-K3DNB4G GWH12QC-K3DNB4G GWH09QB-K3DNB6G GWH12QC-K3DNB6G GWH09QB-K3DNB8G GWH12QC-K3DNB8G GWH09QB-K3DNC2G GWH12QC-K3DNC2G GWH09QB-K3DNC4G GWH12QC-K3DNC4G (Refrigerant R410A) GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...
Page 2: Table Of Contents
Service Manual Table of Contents Part : Technical Information ................1 Ⅰ 1. Summary ........................1 2. Specifications ......................4 2.1 Specification Sheet ......................4 2.2 Operation Characteristic Curve ..................12 2.3 Capacity Variation Ratio According to Temperature ............12 2.4 Cooling and Heating Data Sheet in Rated Frequency .............
Page 3 Service Manual 9. Maintenance ......................... 45 9.1 Error Code List ........................45 9.2 Procedure of Troubleshooting ..................... 53 9.3 Troubleshooting for Normal Malfunction ................67 10. Exploded View and Parts List ..............69 10.1 Indoor Unit ......................... 69 10.2 Outdoor Unit ........................86 11.
Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit A1 panel A5 panel A6 panel B2 panel B4 panel B6 panel B8 panel Technical Information...
Page 5 Service Manual C2 panel C4 panel Outdoor Unit GWH09QB-K3DNA1G/o GWH12QC-K3DNA1G/o Remote Controller YAN1F1 YAC1FB1 Technical Information...
Page 6 GWH09QB-K3DNC4G CB444001201 GWH09QB-K3DNC4G/I CB444N01200 10 GWH09QB-K3DNA1G CB419005502 GWH09QB-K3DNA1G/I CB419N05502 YAC1FB1 GWH09QB-K3DNA1G CB419005500 GWH09QB-K3DNA1G/I CB419N05500 12 GWH09QB-K3DNA2G CB426001200 GWH09QB-K3DNA2G/I CB426N01200 13 GWH09QB-K3DNA5G CB425003502 GWH09QB-K3DNA5G/I CB425N03502 GWH09QB-K3DNA1G/o CB419W05500 14 GWH09QB-K3DNA6G CB427004900 GWH09QB-K3DNA6G/I CB427N04900 YAN1F1 15 GWH09QB-K3DNB4G CB434002302 GWH09QB-K3DNB4G/I CB434N02302 CB435000400 CB435N00400 GWH09QB-K3DNB6G GWH09QB-K3DNB6G/I...
Page 7: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet Parameter Unit Value 1.GWH09QB-K3DNA1G 2.GWH09QB-K3DNA5G 3.GWH09QB-K3DNB2G 4.GWH09QB-K3DNB4G Model 5.GWH09QB-K3DNB6G 6.GWH09QB-K3DNB8G 7.GWH09QB-K3DNC2G 8.GWH09QB-K3DNC2G 9.GWH09QB-K3DNC4G 1.CB419005501 2.CB425003501 3.CB432002201 Product Code 4.CB434002301 5.CB435000401 6.CB438000601 7.CB439000401 8.CB439000403 9.CB444001201 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity(Min~Max) 2600(450~3230)
Page 8 Service Manual Outdoor Unit Model GWH09QB-K3DNA1G/o Outdoor Unit Product Code CB419W05501 Compressor Manufacturer ZHUHAI LANDA CoMPRESSoR Co.,LTD. Compressor Model QXA-A086zC190 Compressor oil RB68EP Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input Compressor Overload Protector 1NT11L-6233 Throttling Method Electron expansion valve Set Temperature Range ºC 16~30...
Page 9 Service Manual Parameter Unit Value 1.GWH09QB-K3DNA1G 2.GWH09QB-K3DNA2G Model 3.GWH09QB-K3DNA5G 4.GWH09QB-K3DNB4G 5.GWH09QB-K3DNB6G 6.GWH09QB-K3DNA6G 1.CB419005500 CB419005502 Product Code 2.CB426001200 3.CB425003502 4.CB434002302 5.CB435000403 CB435000400 6.CB427004900 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity(Min~Max) 2600(450~3230) Heating Capacity(Min~Max) 2800(450~4100)
Page 10 Service Manual Outdoor Unit Model GWH09QB-K3DNA1G/o Outdoor Unit Product Code CB419W05500 Compressor Manufacturer ZHUHAI LANDA CoMPRESSoR Co.,LTD. Compressor Model QXA-A086zC190 Compressor oil RB68EP Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input Compressor Overload Protector 1NT11L-6233 Throttling Method Electron expansion valve Set Temperature Range ºC 16~30...
Page 11 Service Manual Parameter Unit Value 1.GWH12QC-K3DNA1G 2.GWH12QC-K3DNA5G 3.GWH12QC-K3DNB2G 4.GWH12QC-K3DNB4G Model GWH12QC-K3DNA2G 5.GWH12QC-K3DNB6G 6.GWH12QC-K3DNB8G 7.GWH12QC-K3DNC2G 8.GWH12QC-K3DNC4G 1.CB419005401 2.CB425003601 3.CB432002101 Product Code 4.CB434002101;CB434002104 CB426001301 5.CB435000101 6.CB438000402 7.CB439000102 8.CB444001301 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity(Min~Max) 3500(600~3960) 3500(600~3960)
Page 12 Service Manual Outdoor Unit Model GWH12QC-K3DNA1G/o Outdoor Unit Product Code CB419W05401 Compressor Manufacturer ZHUHAI LANDA CoMPRESSoR Co.,LTD. Compressor Model QXA-A086zC190 Compressor oil RB68EP Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input Compressor Overload Protector 1NT11L-6233 Throttling Method Electron expansion valve Set Temperature Range ºC 16~30...
Page 13 Service Manual Parameter Unit Value 1.GWH12QC-K3DNA1G 2.GWH12QC-K3DNA5G Model 2.GWH12QC-K3DNB2G 4.GWH12QC-K3DNB4G 3.GWH12QC-K3DNB6G 6.GWH12QC-K3DNA6G 1.CB419005400 CB419005402 Product Code 2.CB425003602 3.CB432002100 4.CB434002102 5.CB435000100 CB435000102 6.CB427005000 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity(Min~Max) 3500(600~3960) Heating Capacity(Min~Max) 3670(600~5130) Cooling Power Input(Min~Max) 1084(200~1550) Heating Power Input(Min~Max)
Page 14 Service Manual Outdoor Unit Model GWH12QC-K3DNA1G/o Outdoor Unit Product Code CB419W05400 Compressor Manufacturer ZHUHAI LANDA CoMPRESSoR Co.,LTD. Compressor Model QXA-A086zC190 Compressor oil RB68EP Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input Compressor Overload Protector 1NT11L-6233 Throttling Method Electron expansion valve Set Temperature Range ºC 16~30...
Page 15: Operation Characteristic Curve
Service Manual 2.2 Operation Characteristic Curve Cooling Heating Condition Condition Indoor:DB 20°C Indoor:DB 27°C WB19°C Indoor air flow: Super High Indoor air flow: Super High Pipe length:5m Pipe length:5m Voltage:230V Voltage:230V Compressor Speed(rps) Compressor Speed(rps) 2.3 Capacity Variation Ratio According to Temperature Heating operation ambient temperature range is -20ºC~24ºC n i l Condition...
Page 16: Cooling And Heating Data Sheet In Rated Frequency
Service Manual 2.4 Cooling and Heating Data Sheet in Rated Frequency Cooling: Rated cooling Pressure of gas pipe Inlet and outlet pipe Compressor condition(°C) connecting indoor and temperature of heat Fan speed of Fan speed of Model frequency (DB/WB) outdoor unit exchanger indoor unit outdoor unit...
Page 17: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 123.5 179.5 168.5 159.5 Φ55 Φ55 Φ55 Φ55 124.7 83.2 Unit:mm Model Technical Information...
Page 18: Outdoor Unit
Service Manual 3.2 Outdoor Unit Unit:mm Technical Information...
Page 19: Refrigerant System Diagram
Service Manual 4. Refrigerant System Diagram Indoor unit Outdoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Accumlator Suction exchanger Compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Capillary Electron Strainer expansion valve COOLING HEATING Connection pipe specification: Liquid pipe:1/4"...
Page 20: Electrical Part
Service Manual 5. Electrical Part 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 21 Service Manual GWH09QB-K3DNA1G/I(CB419N05500) GWH09QB-K3DNB4G/I(CB434N02302) GWH09QB-K3DNA5G/I(CB425N03500) GWH09QB-K3DNB6G/I(CB435N00403) GWH12QC-K3DNB4G/I(CB434N02102) GWH12QC-K3DNA1G/I(CB419N05400) GWH12QC-K3DNB2G/I(CB432N02100) GWH12QC-K3DNA5G/I(CB425N03600) GWH12QC-K3DNB6G/I(CB435N00102) GWH09QB-K3DNA6G/I(CB427N04900) GWH12QC-K3DNA6G/I(CB427N05000) GWH09QB-K3DNC2G/I(CB439N00403) GWH09QB-K3DNC4G/I GWH12QC-K3DNC4G/I 636322220 GWH09QB-K3DNA1G/I(CB419N05502) GWH12QC-K3DNA1G/I(CB419N05402) TUBE ROOM RECEIVER AND TEMP. TEMP. DISPLAY BOARD SENSOR SENSOR DISPLAY TERMINAL T-SENSOR DISP1 DISP2 BLOCK N(1) COM-OUT JUMP PRINTED CIRCUIT BOARD...
Page 22 Service Manual ● Outdoor Unit GWH09QB-K3DNA1G/o(CB419W05501) WARNING REACTOR OUTTUBE OUTROOM EXHAUST ELECTRONIC Please don't touch any TEMP. TEMP. TEMP. EXPANSION 4-WAY terminal when the machine is SENSOR SENSOR VALVE SENSOR VALVE running ,stopping or has been powered off for less than 30 minutes to prevent the risk (20k) (15k)
Page 23 Service Manual GWH12QC-K3DNA1G/o(CB419W05401) 63610000084 These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit. Technical Information...
Page 24: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram Indoor Unit Top view Name Neutral wire interface of cold plasma(Only for the model with this function) 2 Neutral wire interface of power supply 3 Interface of PG motor Live wire interface of cold plasma(Only for the model with this function) 5 Interface of up &...
Page 25 Service Manual Outdoor Unit ● Top view Name Compressor Reactor 2 Reactor 1 Chassis electric heating Compressor electric heating 4-way valve DC fan Earthing wire Communication wire Neutral wire Live wire Electronic expansion valve Temperature sensor Overloard DRED ● Bottom view Technical Information...
Page 26: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction of YAN1F1 ON/OFF button MODE button WIFI FAN button SWING button TURBO button ▲/ button SLEEP button TEMP button I FEEL button LIGHT button CLOCK button TIMER ON / TIMER OFF button Introduction for icons on display screen Set fan speed...
Page 27 Service Manual 1. ON/OFF button Press this button can turn on or turn off the air conditioner. After turning on the air conditioner, operation indicator " "on indoor unit’s display is ON (green indicator. The colour is different for different models), and indoor unit will give out a sound. 2.
Page 28 Service Manual 7. SLEEP button Under COOL, HEAT or DRY 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. 8.
Page 29 Service Manual Function introduction for combination buttons 1. Energy-saving function Under cooling mode, press "TEMP" and " CLOCK" buttons simultaneously to start up or turn off energy-saving function. When energy-saving function is started up, "SE" will be shown on remote controller, and air conditioner will adjust the set temperature automatically according to ex-factory setting to reach to the best energy-saving effect.
Page 30: Remote Controller Introduction Of Yac1Fb1
Service Manual 6.2 Remote Controller Introduction of YAC1FB1 ON/OFF button MODE button FAN button TURBO button WIFI ▲/ button button button SLEEP button I FEEL button TIMER ON / TIMER OFF button CLOCK button QUIET button(This function is unavailable for this model) X-FAN button LIGHT button...
Page 31 Service Manual 1. ON/OFF button Press this button can turn on or turn off the air conditioner. After turning on the air conditioner, operation indicator " "on indoor unit’s display is ON (green indicator. The colour is different for different models), and indoor unit will give out a sound. 2.
Page 32 Service Manual ● Under swing left and right mode, when the status is switched from off to , if press this button again 2s later, status will switch to off status directly; if press this button again within 2s, the change of swing status will also depend on the circulation sequence stated above. button Press this button can select up &...
Page 33 Service Manual 12. QUIET button Press this button, the Quiet status is under the Auto Quiet mode (display " " and "AUTO" signal ) and Quiet mode (display " " singal) and Quiet OFF (there is no signal of " "...
Page 34 Service Manual 2. 8℃ heating function Under heating mode, press "TEMP" and "CLOCK" buttons simultaneously to start up or turn off 8℃ heating function. When this function is started up, " " and "8℃ " will be shown on remote controller, and the air conditioner keep the heating status at 8℃ . Press "TEMP" and "CLOCK"...
Page 35: Brief Description Of Modes And Functions
Service Manual 6.3 Brief Description of Modes 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 (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.
Page 36 Service Manual (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 C (or 16.5 C by remote controller), press “+, -, +, -, +, -”...
Page 37 Service Manual 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...
Page 38 Service Manual 7. Auto mode Auto mode is determined by controller of IDU. See IDU logic for details. 8. 8 C heating Set temperature is 8 C. Display board of IDU displays 8 C. 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;...
Page 39: Part Ⅱ : Installation And Maintenance
Service Manual Part Ⅱ : Installation and Maintenance 7. Notes for Installation and Maintenance Safety Precautions: 10. If the power cord or connection wire is not long enough, please get the specialized power cord or connection wire Important! from the manufacture or distributor. Prohibit prolong the wire by yourself.
Page 40 Service Manual Main Tools for Installation and Maintenance 1. Level meter, measuring tape 2. Screw driver 3. Impact drill, drill head, electric drill 4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner hexagon spanner 7. Electronic leakage detector 8.
Page 41: Installation
Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall At least 15cm At least 15cm Space to the wall Drainage pipe Installation and Maintenance...
Page 42 Service Manual 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 43: Installation Parts-Checking
Service Manual 8.4 Electric Connection Requirement 8.2 Installation Parts-checking 1. Safety Precaution Name Name (1) Must follow the electric safety regulations when installing Indoor unit Sealing gum the unit. Outdoor unit Wrapping tape (2) According to the local safety regulations, use qualified Support of outdoor Connection pipe power supply circuit and air switch.
Page 44 Service Manual in the holes. 4. Outlet pipe (3) Fix the wall-mounting frame on the wall with tapping screws (1) The pipe can be led out in the direction of right, rear right, (ST4.2X25TA) and then check if the frame is firmly installed by left or rear left.(As show in Fig.3) pulling the frame.
Page 45 Service Manual (4) Put wiring cover back and then tighten the screw. Drain hose (5) Close the panel. Outlet pipe Note: (1) All wires of indoor unit and outdoor unit should be Tape connected by a professional. Drain hose Outlet Fig.9 pipe (2) If the length of power connection wire is insufficient, please...
Page 46: Installation Of Outdoor Unit
Service Manual 4. Connect Indoor and Outdoor Pipes Outdoor Indoor Fig.17 (1) Remove the screw on the right handle of outdoor unit and Wall pipe Sealing gum then remove the handle.(As show in Fig.21) Upper hook (2) Remove the screw cap of valve and aim the pipe joint at the bellmouth of pipe.(As show in Fig.22) Liquid pipe Pipe joint...
Page 47: Vacuum Pumping And Leak Detection
Service Manual 2. Leakage Detection (1) With leakage detector: The drain hos can't raise Check if there is leakage with leakage detector. upwards (2) With soap water: Wall 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.
Page 48: Maintenance
Service Manual 9. Maintenance 9.1 Error Code List 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)
Page 49 Service Manual 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...
Page 50 Service Manual 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...
Page 51 Service Manual 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...
Page 52 Service Manual 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...
Page 53 Service Manual 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...
Page 54 Service Manual If malfunction occurs,corresponding code will display and the unit will resume normal until protection or malfunction disappears. Installation and Maintenance...
Page 55 Service Manual 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 system has noncondensing gas (such as air, water etc.); blockage of capillary assy (including filter); leakage inside four-way valve causes incorrect operation;...
Page 56: Procedure Of Troubleshooting
Service Manual 9.2 Procedure of Troubleshooting Indoor unit (1) Malfunction of Temperature Sensor F1, F2 Main detection points: ● Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? ● Is there short circuit due to trip-over of the parts? ●...
Page 57 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 58 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 59 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 60 Service Manual Outdoor unit: (1) Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel) Main Check Points: ●Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210VAC~240VAC. ●Is the reactor (L) correctly connected? Is the connection loose or fallen? Is the reactor (L) damaged? Fault diagnosis process: Turn on the unit...
Page 61 Service Manual (2) IPM Protection, Out-of-step Fault, Compressor Phase Overcurrent (AP1 below refers to the outdoor control panel) Main check points: ●Is the connection between control panel AP1 and compressor COMP secure? Loose? Is the connection in correct order? ●Is the voltage input of the machine within normal range? (Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT) ●Is the compressor coil resistance normal? Is the insulation of compressor coil against the copper tube in good condition? ●Is the working load of the machine too high? Is the radiation good?
Page 62 Service Manual Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring machine has run for terminal L and N restore it to board XT is within a period of time?
Page 63 Service Manual (3) High temperature and overload protection diagnosis (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: ●Is outdoor ambient temperature in normal range? ●Are the outdoor and indoor fans operating normally? ●Is the heat dissipation environment inside and outside the unit good? Fault diagnosis process: Overheat and high temperature protection...
Page 64 Service Manual (4) Start-up failure (following AP1 for outdoor unit control board) Mainly detect: ●Whether the compressor wiring is connected correct? ●Is compressor broken? ●Is time for compressor stopping enough? Fault diagnosis process: Power on the unit Restart it up after Is stop time of the compressor 3 minutes longer than 3 minutes?
Page 65 Service Manual (5) Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: ●Is the system pressure too high? ●Is the input voltage too low? Fault diagnosis process: Out of step occurs in Out of step occurs once the operation unit is powered on.
Page 66 Service Manual (6) Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board) Mainly detect: ●Is the PMV connected well or not? Is PMV damaged? ●Is refrigerant leaked? Fault diagnosis process: 20 minutes after the complete unit is powered off Is the terminal FA for the Connect the...
Page 67 Service Manual (7) Power factor correct or (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: ●Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken Fault diagnosis process: Start Check wiring of the...
Page 68 Service Manual (8) Communication malfunction: (following AP1 for outdoor unit control board) Mainly detect: ●Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? ●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? Fault diagnosis process: Start...
Page 69 Service Manual (9) Malfunction of Overcurrent Protection 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 70: 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 After energization, operation indicator isn’t bright wait for power recovery.
Page 71 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 make sure all wiring terminals are connected connection diagram firmly...
Page 72: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
Page 73 Service Manual Part Code Description GWH09QB-K3DNA1G/I GWH09QB-K3DNA1G/I (Cold Plasma) Product Code CB419N05501 CB419N05500 Front Panel Assy 20022496 20022496 Display Board 30565231 30565231 Front Case Assy 20022495 20022495 Helicoid Tongue 26112508 26112508 Left Axile Bush 10512037 10512037 Rear Case assy 20162010 20162010 Drainage Hose 0523001408...
Page 74 Service Manual Part Code Description GWH09QB-K3DNB2G/I GWH09QB-K3DNB4G/I (Cold Plasma) (Cold Plasma) Product Code CB432N02200 CB434N02300 Front Panel Assy 20000300019 20000300026 Display Board 30565260 30565260 Front Case Assy 00000200040 00000200040 Helicoid Tongue 26112508 26112508 Left Axile Bush 10512037 10512037 Rear Case assy 20162010 20162010 Drainage Hose...
Page 75 Service Manual Part Code Description GWH09QB-K3DNA2G/I GWH09QB-K3DNB6G/I (Cold Plasma) (Cold Plasma) Product Code CB426N01200 CB435N00400 Front Panel Assy 20022719 20000300050 Display Board 30565265 30565281 Front Case Assy 2002273001 00000200040 Helicoid Tongue 26112508 26112508 Left Axile Bush 10512037 10512037 Rear Case assy 20162010 20162010 Drainage Hose...
Page 76 Service Manual Part Code Description GWH09QB-K3DNB4G/I GWH09QB-K3DNB6G/I Product Code CB434N02302 CB435N00403 Front Panel Assy 20000300026 20000300050 Display Board 30565260 30565281 Front Case Assy 00000200040 00000200040 Helicoid Tongue 26112508 26112508 Left Axile Bush 10512037 10512037 Rear Case assy 20162010 20162010 Drainage Hose 0523001408 0523001408 Ring of Bearing...
Page 77 Service Manual Part Code Description GWH09QB-K3DNA5G/I GWH09QB-K3DNA5G/I (Cold Plasma) Product Code CB425N03502 CB425N03500 Front Panel Assy 00000300036 00000300036 Display Board 30565260 30565260 Front Case Assy 2002249501 2002249501 Helicoid Tongue 26112508 26112508 Left Axile Bush 10512037 10512037 Rear Case assy 20162010 20162010 Drainage Hose 0523001408...
Page 78 Service Manual Part Code Description GWH09QB-K3DNB8G/I GWH09QB-K3DNC2G/I (Cold Plasma) (Cold Plasma) Product Code CB438N00600 CB439N00400 Front Panel Assy 20000300073 20000300068 Display Board 30565260 30565281 Front Case Assy 00000200040 00000200040 Helicoid Tongue 26112508 26112508 Left Axile Bush 10512037 10512037 Rear Case assy 20162010 20162010 Drainage Hose...
Page 79 Service Manual Part Code Description GWH09QB-K3DNA1G/I GWH12QC-K3DNA1G/I Product Code CB419N05502 CB419N05402 Front Panel Assy 20022496 20022493 Display Board 30565231 30565231 Front Case Assy 20022495 20022489 Helicoid Tongue 26112508 26112436 Left Axile Bush 10512037 10512037 Rear Case assy 20022682 00000100092 Drainage Hose 0523001408 05230014 Ring of Bearing...
Page 80 Service Manual Part Code Description GWH12QC-K3DNA1G/I GWH12QC-K3DNA1G/I (Cold Plasma) Product Code CB419N05401 CB419N05400 Front Panel Assy 20022493 20022493 Display Board 30565231 30565231 Front Case Assy 20022489 20022489 Helicoid Tongue 26112507 26112507 Left Axile Bush 10512037 10512037 Rear Case assy 22202375 22202375 Drainage Hose 05230014...
Page 81 Service Manual Part Code Description GWH12QC-K3DNB4G/I GWH12QC-K3DNB6G/I (Cold Plasma) (Cold Plasma) Product Code CB434N02100 CB434N02104 CB435N00100 Front Panel Assy 20000300027 20000300027T01 20000300049 Display Board 30565260 30565260 30565281 Front Case Assy 00000200045 00000200045 00000200045 Helicoid Tongue 26112436 26112436 26112507 Left Axile Bush 10512037 10512037 10512037...
Page 82 Service Manual Part Code Description GWH12QC-K3DNB2G/I GWH12QC-K3DNB2G/I (Cold Plasma) Product Code CB432N02100 CB432N02101 Front Panel Assy 20000300018 20000300018 Display Board 30565260 30565260 Front Case Assy 00000200045 00000200045 Helicoid Tongue 26112507 26112436 Left Axile Bush 10512037 10512037 Rear Case assy 22202375 00000100093 Drainage Hose 05230014...
Page 83 Service Manual Part Code Description GWH12QC-K3DNA2G/I GWH12QC-K3DNB4G/I (Cold Plasma) Product Code CB426N01300 CB434N02102 Front Panel Assy 2002270401 20000300027 Display Board 30565265 30565260 Front Case Assy 2002273101 00000200045 Helicoid Tongue 26112436 26112436 Left Axile Bush 10512037 10512037 Rear Case assy 00000100093 00000100093 Drainage Hose 05230014...
Page 84 Service Manual Part Code Description GWH12QC-K3DNA5G/I GWH12QC-K3DNA5G/I (Cold Plasma) Product Code CB425N03600 CB425N03602 Front Panel Assy 00000300022 00000300022 Display Board 30565260 30565260 Front Case Assy 00000200022 00000200022 Helicoid Tongue 26112436 26112436 Left Axile Bush 10512037 10512037 Rear Case assy 00000100093 00000100093 Drainage Hose 05230014...
Page 85 Service Manual Part Code Description GWH12QC-K3DNB8G/I GWH12QC-K3DNB6G/I (Cold Plasma) Product Code CB435N00102 CB438N00402 Front Panel Assy 20000300049 20000300074 Display Board 30565281 30565260 Front Case Assy 00000200045 00000200045 Helicoid Tongue 26112436 26112436 Left Axile Bush 10512037 10512037 Rear Case assy 00000100093 00000100093 Drainage Hose 05230014...
Page 86 Service Manual Part Code Description GWH12QC-K3DNC2G/I(Cold GWH09QB-K3DNC2G/I Plasma) Product Code CB439N00102 CB439N00403 Front Panel Assy 20000300069 20000300068 Display Board 30565281 30565281 Front Case Assy 00000200045 00000200040 Helicoid Tongue 26112436 26112508 Left Axile Bush 10512037 10512037 Rear Case assy 00000100093 20162010 Drainage Hose 05230014 0523001408...
Page 87 Service Manual Part Code Description GWH09QB-K3DNA6G/I GWH12QC-K3DNA6G/I Product Code CB427N04900 CB427N05000 Front Panel Assy 2002266101S 2002266101S Display Board 30565265 30565265 Front Case Assy 2002273001 2002273101 Helicoid Tongue 26112508 26112436 Left Axile Bush 10512037 10512037 Rear Case assy 20162010 00000100093 Drainage Hose...
Page 88 Service Manual Part Code Description GWH09QB-K3DNC4G/I GWH12QC-K3DNC4G/I Product Code CB444N01200 CB444N01300 Front Panel 20000300098S 20000300098S Display Board 30565260 30565260 Front Case Assy 00000200040 00000200045 Helicoid Tongue 26112508 26112436 Left Axile Bush 10512037 10512037 Rear Case assy 20162010 00000100093 Drainage Hose 0523001408 05230014 Ring of Bearing...
Page 89: Outdoor Unit
Service Manual 10.2 Outdoor Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
Page 90 Service Manual Part Code Description GWH09QB-K3DNA1G/o Product Code CB419W05501 CB419W05500 Electric Box Assy 10000100118 10000100132 Electric Box Sub-Assy 10000500049 10000500053 Main Board 30138000453 30138000455 Reactor 43130184 43130184 Terminal Board 42010313 42010313 Wire Clamp 71010003 71010003 Front Grill 22413027 22413027 Front Panel Assy 0153304802 0153304802 Axial Flow Fan...
Page 91 Service Manual Part Code Description GWH12QC-K3DNA1G/o Product Code CB419W05401 CB419W05400 Electric Box Assy 10000100120 10000100134 Electric Box Sub-Assy 10000500051 10000500055 Main Board 30138000456 30138000454 Reactor 43130184 43130184 Terminal Board 42010313 42010313 Wire Clamp 71010003 71010003 Front Grill 22413027 22413027 Front Panel Assy 0153304802 0153304802 Axial Flow Fan...
Page 92: Removal Procedure
Service Manual 11. Removal Procedure Caution: discharge the refrigerant completely before removal. 11.1 Removal Procedure of Indoor Unit Step Procedure 1. Remove filter assembly Front panel Open the front panel. Push the left filter and right filter until they are separate from the groove on the front panel.
Page 93 Service Manual Step Procedure 4. Remove electric box cover 2 Screw Electric box cover 2 Remove the screws on the electric box cover 2 to remove the electric box cover 2. 5. Remove front case sub-assy Screws Remove the screws fixing front case. Note: 1.Open the screw caps before removing the screws around the air outlet.
Page 94 Service Manual Step Procedure 7. Remove electric box assy Screw Loosen the connection clasps between shield cover of electric box sub-assy and Clasps electric box, and then remove the shield cover of electric box sub-assy. Remove the screw fixing electric box assy . Electric box Shield cover of electric box sub-assy...
Page 95 Service Manual Step Procedure Instruction: Some wiring terminal of this product is with lock catch and other devices. circlip The pulling method is as below: holder 1.Remove the soft sheath for some terminals at first, hold the circlip and then pull out the terminals.
Page 96 Service Manual Step Procedure 9. Remove motor and cross flow blade Remove the screws fixing motor clamp Screws and then remove the motor clamp. Motor clamp Cross flow Remove the screws at the connection Screw Motor place of cross flow blade and motor; lift Holder the motor and cross flow blade upwards sub-assy...
Page 97: Removal Procedure Of Outdoor Unit
Service Manual 11.2 Removal Procedure of Outdoor Unit Step Procedure 1. Remove big handle Right side plate Remove the screw fixing big handle; slide out the big handle upwards to make the clasp of big handle separate from the groove of right side plate, and then remove the big handle.
Page 98 Service Manual Step Procedure 4. Remove the front cover Screws Screw off the screws that are locking the front cover. Then take it off. Screws Screws Front cover Screws 5. Remove axial flow blade Remove the nut fixing axial flow blade and then remove the axial flow blade.
Page 99 Service Manual Step Procedure 6. Remove protective grille and right side plate Remove the screws 1 fixing protective grille and then remove the protective Protective grille. grille Screws 2 Screws 1 Right side plate Right side plate Remove the screws 2 fixing right side plate and then remove the right side plate.
Page 100 Service Manual Step Procedure 8. Remove 4-way valve assy Unsolder the spot weld of 4-way valve assy, compressor and condenser, and then remove the 4-way valve assy . 4-way valve assy Note: When unsoldering the spot weld, wrap the 4-way valve with wet cloth completely to avoid damaging the valve due to high temperature.
Page 101 Service Manual Step Procedure 11. Remove gas valve and liquid valve Remove two screws fixing the gas valve, then remove the gas valve. Remove two screws fixing the liquid valve, then remove the liquid valve. Liquid valve Screws Gas valve Screws 12.
Page 102 Service Manual Step Procedure 14. Remove compressor Remove 3 foot nuts on compressor, and then remove the compressor. Note: Protect the ports of discharge pipe and suction pipe to avoid foreign objects to enter it. Compressor Foot nuts 15. Remove condenser Remove one screw fixing the condenser, then remove the condenser.
Page 103: Appendix
Service Manual Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit Fahrenheit display Fahrenheit display Fahrenheit display Fahrenheit Celsius （℃） Celsius （℃） Celsius （℃） temperature temperature temperature （℉）...
Page 104: Appendix 3: Pipe Expanding Method
Service Manual Appendix 3: Pipe Expanding Method Pipe Note: Pipe cutter Improper pipe expanding is the main cause of refrigerant leakage.Please expand the pipe according to the following steps: Leaning Uneven Burr A:Cut the pip ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●...
Page 105: 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 (15K) Temp( C) Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009...
Page 106 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp( C) Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 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 1.269 137.2...
Page 107 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor (50K) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) 853.5 18.34 4.75 799.8 93.42 17.65 4.61 89.07 16.99 4.47 703.8 84.95 16.36 4.33 660.8 81.05 15.75 4.20 620.8 77.35 15.17 4.08...
Page 108 GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 Email: gree@gree.com.cn Http://www.gree.com HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED Add: Unit 2612,26/F.,Miramar Tower 132 Nathan Road,TST,Kowloon,HK Tel: (852) 31658898 Fax: (852) 31651029...

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