Gree GWH12ACC-K6DNA1D Service Manual
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Troubleshooting
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Summary of Contents for Gree GWH12ACC-K6DNA1D
- Page 1 Change for life Service Manual Models: GWH09ACC-K6DNA1A GWH12ACC-K6DNA1D GWH12ACC-K6DNA4D GWH12ACC-K6DNA5D Models: GWH18ACD-K6DNA1D GWH18ACD-K6DNA5D GWH18ACD-K6DNA4D GWH24ACE-K6DNA1A (Refrigerant R32) GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI...
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Page 2: Table Of Contents
5.2 PCB Printed Diagram .....................22 6. Function and Control ..................26 6.1 Remote Controller Introduction ..................26 6.2 GREE+ App Operation Manual ..................32 6.3 Ewpe Smart App Operation Manual ................33 6.4 Brief Description of Modes and Functions ..............34 Part Ⅱ : Installation and Maintenance ..........45... -
Page 3: Table Of Contents
Service Manual 9. Maintenance ......................56 9.1 Error Code List .......................56 9.2 Procedure of Troubleshooting ..................64 9.3 Troubleshooting for Normal Malfunction .................77 10. Exploded View and Parts List ..............79 10.1 Indoor Unit ........................79 10.2 Outdoor Unit .........................86 11. Removal Procedure ..................93 11.1 Removal Procedure of Indoor Unit ................93 11.2 Removal Procedure of Outdoor Unit ................98 Appendix:... -
Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit GWH09ACC-K6DNA1A/I GWH12ACC-K6DNA1D/I GWH24ACE-K6DNA1A/I GWH18ACD-K6DNA1D/I GWH12ACC-K6DNA4D/I GWH18ACD-K6DNA4D/I GWH12ACC-K6DNA5D/I GWH24ACE-K6DNA4A/I GWH18ACD-K6DNA5D/I Outdoor Unit GWH18QD-K6DNA1D/o GWH12QC-K6DNA1D/o GWH24QE-K6DNA1E/o GWH09ACC-K6DNA1A/o Remote Controller YAC1FB9(WiFi) Technical Information... - Page 5 Controller 1 GWH09ACC-K6DNA1A CB497003000 GWH09ACC-K6DNA1A/I CB497N03000 CB497W03000 GWH09ACC-K6DNA1A/o 2 GWH09ACC-K6DNA1A CB497003001 GWH09ACC-K6DNA1A/I CB497N03000 CB497W03001 3 GWH12ACC-K6DNA1D CB497001601 GWH12ACC-K6DNA1D/I CB497N01600 GWH12QC-K6DNA1D/o CB419W15501 4 GWH12ACC-K6DNA4D CB344000701 GWH12ACC-K6DNA4D/I CB344N00700 5 GWH12ACC-K6DNA5D CB341000600 GWH12ACC-K6DNA5D/I CB341N00600 GWH12QC-K6DNA1D/o CB419W15500 6 GWH12ACC-K6DNA1D CB497001600 GWH12ACC-K6DNA1D/I CB497N01600 YAC1FB9...
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Page 6: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet Parameter Unit Value Model GWH09ACC-K6DNA1A GWH09ACC-K6DNA1A Product Code CB497003000 CB497003001 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity 2700 2700 Heating Capacity 3000 3000 Cooling Power Input Heating Power Input Cooling Current Input Heating Current Input... - Page 7 Service Manual Outdoor Unit Model GWH09ACC-K6DNA1A/o GWH09ACC-K6DNA1A/o Outdoor Unit Product Code CB497W03000 CB497W03001 ZHUHAI LANDA ZHUHAI LANDA Compressor Manufacturer CoMPRESSoR Co., LTD CoMPRESSoR Co., LTD Compressor Model QXF-A079zE190A QXF-A079zE190A Compressor oil FW68DA FW68DA Compressor Type Rotary Rotary Compressor LRA. Compressor RLA Compressor Power Input Compressor Overload Protector HPC115/95U1/KSD115℃...
- Page 8 Service Manual Parameter Unit Value GWH12ACC-K6DNA1D GWH12ACC-K6DNA1D Model GWH12ACC-K6DNA4D GWH12ACC-K6DNA5D CB497001601/CB497001602 CB497001600 Product Code CB344000701 CB341000600 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity 3500 3500 Heating Capacity 3670 3670 Cooling Power Input...
- Page 9 Service Manual Outdoor Unit Model GWH12QC-K6DNA1D/o GWH12QC-K6DNA1D/o Outdoor Unit Product Code CB419W15501 CB419W15500 ZHUHAI LANDA ZHUHAI LANDA Compressor Manufacturer CoMPRESSoR Co.,LTD CoMPRESSoR Co.,LTD Compressor Model QXF-A102zE190B QXF-A102zE190B Compressor oil FW68DA FW68DA Compressor Type Rotary Rotary Compressor LRA. Compressor RLA Compressor Power Input 1023 1023 Compressor Overload Protector...
- Page 10 Service Manual Parameter Unit Value GWH18ACD-K6DNA1D(LCLH) GWH18ACD-K6DNA1D(LC) Model GWH18ACD-K6DNA5D GWH18ACD-K6DNA4D CB497002100 CB497002101/CB497002102 Product Code CB341000700 CB344000901 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity 5200 5200 Heating Capacity 5300 5300 Cooling Power Input 1528 1528 Heating Power Input...
- Page 11 Service Manual Outdoor Unit Model GWH18QD-K6DNA1D/o(LCLH) GWH18QD-K6DNA1D/o(LC) Outdoor Unit Product Code CB419W15600 CB419W15601 ZHUHAI LANDA CoMPRESSoR ZHUHAI LANDA CoMPRESSoR Compressor Manufacturer Co.,LTD Co.,LTD Compressor Model QXF-B141ZF030F QXF-B141ZF030F Compressor oil FW68DA or equivalent FW68DA or equivalent Compressor Type Rotary Rotary Compressor LRA. Compressor RLA Compressor Power Input 1410...
- Page 12 Service Manual GWH24ACE-K6DNA1A Model GWH24ACE-K6DNA1A GWH24ACE-K6DNA4A CB497001901/CB497001903 Product Code CB497001900 CB344000801 Rated Voltage V ～ 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity 7000 7000 Heating Capacity 7400 7400 Cooling Power Input 1900 1900 Heating Power Input 1897 1897...
- Page 13 Service Manual Outdoor Unit Model GWH24QE-K6DNA1E/o GWH24QE-K6DNA1E/o Outdoor Unit Product Code CB419W15701 CB419W15700 ZHUHAI LANDA CoMPRESSoR ZHUHAI LANDA CoMPRESSoR Compressor Manufacturer Co., LTD Co., LTD Compressor Model QXFS-D25zX090H QXFS-D25zX090H Compressor oil FW68DA FW68DA Compressor Type Rotary Rotary Compressor LRA. Compressor RLA 11.7 11.7 Compressor Power Input...
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Page 14: Operation Characteristic Curve
Service Manual 2.2 Operation Characteristic Curve Cooling Heating 220V Conditions 220V Indoor: DB27°C/WB19°C Outdoor: DB35°C/WB24°C Indoor air flow: High Pipe length: 5m 230V 230V 240V Conditions Indoor: DB20°C/WB15°C 240V Outdoor: DB7°C/WB6°C Indoor air flow: High Pipe length: 5m 10 20 30 40 50 60 70 80 90 100 Compressor speed (rps) Compressor speed (rps) 2.3 Capacity Variation Ratio According to Temperature... -
Page 15: Cooling And Heating Data Sheet In Rated Frequency
Service Manual 2.4 Cooling and Heating Data Sheet in Rated Frequency Cooling: Pressure of gas pipe Inlet and outlet pipe Rated cooling Compressor connecting indoor and temperature of heat Fan speed of Fan speed of condition(°C) (DB/WB) Model revolution outdoor unit exchanger indoor unit outdoor unit... -
Page 16: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 09/12K Φ55 Φ55 Φ55 Φ55 Φ70 Φ70 Φ70 Φ70 Unit:mm Unit:mm Models 24/28K 125.5 202.5 09/12K 201.5 541.5 1013 125.5 202.5 1122 Φ55 Φ55 Technical Information Φ70 Φ70... -
Page 17: Outdoor Unit
Service Manual 3.2 Outdoor Unit Unit:mm 18/24K Unit:mm Technical Information... - Page 18 Service Manual Unit:mm Technical Information...
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Page 19: Refrigerant System Diagram
Service Manual 4. Refrigerant System Diagram 12/18/24K Cooling and heating model 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 Electric Strainer expand valve COOLING... -
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 ● Outdoor Unit GWH09ACC-K6DNA1A/o(CB497W03000) 60000700068702 GWH09ACC-K6DNA1A/o(CB497W03001) 600007000687 Technical Information...
- Page 22 Service Manual GWH12QC-K6DNA1D/o(LC)(CB419W15501) 60000700111002 GWH12QC-K6DNA1D/o(LCLH) (CB419W15500) 60000700111001 Technical Information...
- Page 23 Service Manual GWH18QD-K6DNA1D/o(CB419W15601) 63610000218 GWH18QD-K6DNA1D/o(CB419W15600) 6361000021801 Technical Information...
- Page 24 Service Manual GWH24QE-K6DNA1E/o(CB419W15700) 60000700033902 GWH24QE-K6DNA1E/o(CB419W15701) 600007000339 These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit. Technical Information...
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Page 25: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram Indoor Unit Top view Name Interface of communication wire for indoor unit and outdoor unit Interface of live wire Fuse Interface of health function neutral wire Interface of neutral wire Interface of fan Interface of health function live wire 8 Auto button 9 Up&down swing interface Interface of PG feedback... - Page 26 Service Manual Outdoor Unit 09/12K ● Top view Name 1 Interface of compressor wire 2 Interface of reactor Terminal of chassis electric heater Terminal of compressor electric heater 5 Terminal of 4-way valve 6 Interface of outdoor fan 7 Interface of earthing wire 8 Communication interface 9 Interface of netural wire 10 Interface of live wire...
- Page 27 Service Manual Top view Name Terminal of compressor overload protection Terminal of temperature sensor Terminal of electronic expansion valve 4 Terminal of outdoor fan 5 Terminal of 4-way valve Terminal of compressor electric heating Terminal of chassis electric heating Terminal of indoor unit and outdoor unit communication 9 Power supply live wire 10 Earthing wire...
- Page 28 Service Manual ● Top view Terminal of compressor Terminal of electronic expansion valve Terminal of temperature sensor Overload terminal of compressor Terminal of outdoor fan Live wire Communication wire Earthing wire Neutral wire ● Bottom view Technical Information...
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Page 29: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction ON/OFF button MODE button FAN button TURBO button ▲/ button button button SLEEP button I FEEL button TIMER ON / TIMER OFF button CLOCK button QUIET button WiFi button LIGHT button button TEMP button Set fan speed... - Page 30 Service Manual Press this button to turn on the unit. Press this button again to turn off the unit. (This indicator is not available for some models). (This indicator is not available for some models). Operation indicator is ON. (This indicator is not available for some models).
- Page 31 Service Manual function is only available for some mode Press this button, can select Sleep 1 ( ), Sleep 2 ( ), Sleep 3 ( ) and cancel the Sleep, circulate between these, after electrified, Sleep Cancel is defaulted.Sleep 1 is Sleep mode 1, in Cool modes; sleep status after run for one hour, the main unit setting temperature will increase 1 , two hours, setting temperature increased 2 , then the unit will run at this setting temperature;...
- Page 32 Service Manual The Quiet function can be set up in all modes; Under the Quiet mode,the fan speed is not available. The Quiet function is only available for some models. When quiet function is selected Under cooling mode: indoor fan operates at notch 4 speed. 10 minutes later or when indoor ambient temperature≤28℃, indoor fan will operate at notch 2 speed or quiet mode according to the comparison between indoor ambinet temperature and set temperature.
- Page 33 Service Manual Technical Information...
- Page 34 Service Manual Technical Information...
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Page 35: Gree+ App Operation Manual
GREE+ App Download Linkage Scan the QR code or search "GREE+" in the application market to download and install it. When "GREE+" App is installed, register the account and add the device to achieve long-distance control and LAN control of Gree smart home appliances. -
Page 36: Ewpe Smart App Operation Manual
Service Manual 6.3 Ewpe Smart App Operation Manual Control Flow Chart Internet Cloud intelligent Cellular/ Home Wi-Fi home Other Wi-FI appliances Home wireless router Home Wi-Fi Operating Systems Requirement for User's smart phone: iOS system Android system Support iOS7.0 and Support Android 4.4 and above version above version... -
Page 37: Brief Description Of Modes And Functions
Service Manual 6.4 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 38 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 39 Service Manual 09/12K 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 40 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;...
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Page 41: Outdoor Units
Service Manual 18/24K Outdoor Units 1. Input Parameter Compensation and Calibration (1) Check the ambient temperature compensation function Indoor ambient temperature compensation function. a. In cooling mode, the indoor ambient temperature participating in computing control = (T – ⊿ T indoor ambient temperature cooling indoor ambient temperature compensation... - Page 42 Service Manual 3. Special Functions Defrosting Control ① Conditions for starting defrosting After the time for defrosting is judged to be satisfied, if the temperature for defrosting is satisfied after detections for continuous 3minutes, the defrosting operation will start. ② Conditions of finishing defrosting The defrosting operation can exit when any of the conditions below is satisfied: ③...
- Page 43 Service Manual 1. Starting estimation: After the compressor stopped working for 180s, if T >[T (the temperature of hysteresis is 2 )], the inner pipe frozen-preventing frequency-limited temperature machine is only allowed to start for operating, otherwise it should not be started, and should be stopped to treat according to the frozen- preventing protection: Clear the trouble under the mode of power turn-off / heating, and the protection times are not counted.
- Page 44 Service Manual 1. Frequency limited If [T ]≤T <[T ] , you should limit the frequency raising of heating overload frequency-limited temperature inner pipe heating overload frequency reducing temperature at normal speed compressor. 2. Reducing frequency at normal speed and stopping machine: If T[ ]≤T <[T...
- Page 45 Service Manual (6)Voltage sag protection After start the compressor, if the time of DC link Voltage sag [U ] is measured to be less than t Voltage sag protection time , Sagging protection voltage the machine should be stop at once, hand on the voltage sag trouble, reboot automatically after 30 minutes. (7)Communication fault When you have not received any correct signal from the inner machine in three minutes, the machine will stop for communication fault.
- Page 46 Service Manual (12) Starting-up Failure Protection for Compressor Stop the compressor after its starting-up fails, restart it after 20s if the fault doesnt shows, and if they are all failing for the successive start 3 times, it shall be reported as Starting-up Failure, and then restart up it after 3 min. When it still not be able to operate through carry out the above process for 5 times, it is available if press ON/OFF.
- Page 47 Service Manual 6. Electric Heating Function of Chassis (1) When T ≤0ºC, the electric heating of chassis will operate; outdoor amb. (2) When T >2ºC, the electric heating of chassis will stop operation; outdoor amb. (3)When 0ºC<T ≤2ºC, the electric heating of chassis will keep original status. outdoor amb.
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Page 48: 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 49 Service Manual Safety Precautions for Installing and Relocating the Unit: To ensure safety, please be mindful of the following precautions. Warnings 1. When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the specified refrigerant.
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Page 50: Installation Notes
Service Manual Safety Operation of Flammable Refrigerant Qualification requirement for installation and maintenance man ●All the work men who are engaging in the refrigeration system should bear the valid certification awarded by the authoritative organization and the qualification for dealing with the refrigeration system recognized by this industry. If it needs other technician to maintain and repair the appliance, they should be supervised by the person who bears the qualification for using the flammable refrigerant. - Page 51 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.
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Page 52: Installation
Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 15cm Space to the wall At least 15cm At least 15cm At least 15cm Space to the wall Drainage pipe Drainage pipe Installation and Maintenance... - Page 53 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...
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Page 54: Installation Parts-Checking
Service Manual 8.4 Requirements for electric connection 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 power supply circuit and air switch. -
Page 55: Installation Of Indoor Unit
Service Manual 8.5 Installation of Indoor Unit 1. Choosing Installation Iocation Recommend the installation location to the client and then confirm it with the client. 2. Install Wall-mounting Frame Rear left (1) Hang the wall-mounting frame on the wall; adjust it in Fig.3 Right horizontal position with the level meter and then point out the... - Page 56 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...
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Page 57: 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 58: 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: If leakage detector is not available, please use soap water for Wall leakage detection. Apply soap water at the suspected position and keep the soap water for more than 3min. -
Page 59: Maintenance
Service Manual 9. Maintenance 9.1 Error Code List Display Method of Indoor Unit Indicator Display (during blinking, ON 0.5s and OFF Dual-8 Malfunction A/C status Possible Causes 0.5s) Code Name Display operation Cool Heating Indicator Indicator Indicator Possible reasons: During cooling and drying High 1. - Page 60 Service Manual Display Method of Indoor Unit Indicator Display (during blinking, ON Dual-8 Malfunction 0.5s and OFF 0.5s) A/C status Possible Causes Code Name operation Cool Heating Display Indicator Indicator Indicator When the outdoor unit receive signal Gathering of Gathering refrigerant ,the system Nominal cooling mode refrigerant will be forced to run under cooling...
- Page 61 Service Manual Display Method of Indoor Unit Indicator Display (during blinking, ON 0.5s and OFF Dual-8 Malfunction A/C status Possible Causes 0.5s) Code Name operation Cool Heating Display Indicator Indicator Indicator Decrease frequency All loads operate normally, while Overload or temperature is too high; due to operation frequency for Refrigerant is insufficient;...
- Page 62 Service Manual Display Method of Indoor Unit Indicator Display (during blinking, ON 0.5s and OFF Dual-8 Malfunction A/C status Possible Causes 0.5s) Code Name operation Cool Heating Display Indicator Indicator Indicator Compressor intermediate Showing during middle cooling or middle frequence in heating test test state Overcurrent...
- Page 63 Service Manual Display Method of Indoor Unit Indicator Display (during blinking, ON Dual-8 Malfunction 0.5s and OFF 0.5s) A/C status Possible Causes Code Name operation Cool Heating Display Indicator Indicator Indicator 1. Bad contact of DC motor feedback terminal. 2. Bad contact of DC motor Internal fan motor, external fan motor, Internal motor control end.
- Page 64 Service Manual Display Method of Indoor Unit Indicator Display (during blinking, ON Dual-8 Malfunction 0.5s and OFF 0.5s) A/C status Possible Causes Name Code operation Cool Heating Display Indicator Indicator Indicator During cooling and drying Malfunction operation, the compressor will Theres circuit malfunction on outdoor of complete stop while indoor fan will operate;...
- Page 65 Service Manual If malfunction occurs,corresponding code will display and the unit will resume normal until protection or malfunction disappears. Installation and Maintenance...
- Page 66 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;...
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Page 67: 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 68 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 cant operate? ●...
- Page 69 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 70 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 71 Service Manual (5) Malfunction of detecting plate(WIFI) JF Start check if the connection wire are correctly connected detecting Replace the plate with the same model Is malfunction eliminated Replace the mainboard with the same model The end Installation and Maintenance...
- Page 72 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 73 Service Manual 2. IPM protection, phase current overcurrent (the control board as below indicates the control board of outdoor unit) H5/P5 Mainly detect: (1) Compressor COMP terminal (2) voltage of power supply (3) compressor (4) Refrigerant-charging volume (5) air outlet and air inlet of outdoor/indoor unit Troubleshooting: Turn on the unit after energization...
- Page 74 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 75 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 76 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 77 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 78 Service Manual (7) 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 79 Service Manual (8) 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...
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Page 80: Troubleshooting For Normal Malfunction
Service Manual 9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner Cant be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether its due to power failure. If yes, No power supply, or poor After energization, operation indicator isnt bright wait for power recovery. - Page 81 Service Manual 4. ODU Fan Motor Cant 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...
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Page 82: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit 09/12K The component picture is only for reference; please refer to the actual product. Installation and Maintenance... - Page 83 Service Manual Part Code Description GWH12ACC-K6DNA1D/I GWH12ACC-K6DNA4D/I GWH12ACC-K6DNA5D/I Product Code CB497N01600 CB344N00700 CB341N00600 Front Panel 200003000128T01 000003060054 000003060046 Display Board 300001000202 300001000202 300001000202 Filter Sub-Assy 1112246803 1112246803 1112246803 Front Case Assy 000002000044 000002000044 000002000044 Axile Bush 10542036 10542036 10542036 Helicoid Tongue...
- Page 84 Service Manual Part Code Description GWH09ACC-K6DNA1A/I GWH12ACC-K6DNA1D/I Product Code CB497N03000 CB497N01602 Front Panel 200003000128T01 20000300012801K Display Board 300001000202 300001000209 Filter Sub-Assy 1112246803 1112246803 Front Case Assy 000002000044 00000200004401 Axile Bush 10542036 10542036 Helicoid Tongue 26112436 26112436 Left Axile Bush 10512037...
- Page 85 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 86 Service Manual Part Code Description GWH18ACD-K6DNA1D/I GWH18ACD-K6DNA5D/I GWH18ACD-K6DNA4D/I Product Code CB497N02100 CB341N00700 CB344N00900 Front Panel 200003000130T01 000003060048 000003060030 Display Board 300001000202 300001000202 300001000202 Filter Sub-Assy 1112208906 1112208906 1112208906 Front Case Assy 000002000043 000002000043 000002000043 Axile Bush 10542036 10542036 10542036 Air Louver(Manual) 10512732 10512732 10512732...
- Page 87 Service Manual Part Code Description GWH18ACD-K6DNA1D/I Product Code CB497N02102 Front Panel 20000300013001K Display Board 300001000209 Filter Sub-Assy 1112208906 Front Case Assy 00000200004301 Axile Bush 10542036 Air Louver(Manual) 10512732 Helicoid tongue 26112512 Left Axile Bush 10512037 Rear Case assy 000001000009 Rubber Plug (Water Tray) 76712012 O-Gasket sub-assy of Bearing 76512051...
- Page 88 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 89 Service Manual Part Code Description GWH24ACE-K6DNA1A/I GWH24ACE-K6DNA4A/I GWH24ACE-K6DNA1A/I Product Code CB497N01900 CB344N00800 CB497N01903 Front Panel 200003000127T01 000003060027 20000300012701K01 Filter Sub-Assy 1101200703 1101200703 1101200703 Screw Cover 2425201906 2425201906 2425201902 Left Side Plate 200085000011 200085000011 20008500001101P01 Decorative Strip(Left) 230001000066 230001000066D 230001000066D Front Case 200002000030 200002000030 20000200003001P01...
- Page 90 Service Manual 10.2 Outdoor Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 91 Service Manual Part Code Description GWH09ACC-K6DNA1A/o Product Code CB497W03000 CB497W03001 Electric Box Assy 100002062002 100002062004 Electric Box 20113034 20113034 Main Board 300027060217 300027060218 Reactor 43130184 43130184 Terminal Board 422000060016 422000060016 Wire Clamp 71010103 71010103 Front Grill 22413049 22413049 Front Panel 01533034P 01533034P Axial Flow Fan...
- Page 92 Service Manual 21 22 23 24 25 The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 93 Service Manual Part Code Description GWH12QC-K6DNA1D/o (LCLH) GWH12QC-K6DNA1D/o(LC) Product Code CB419W15500 CB419W15501 Left Side Plate 01303200P 01303200P Fan Motor 1501308511 1501308511 Motor Support 01703136 01703136 Condenser Assy 011002060182 011002060182 Top Cover Sub-Assy 000051060003 000051060003 Rear Grill 01475014 01475014 Clapboard Sub-Assy 01233180 01233180 Compressor and Fittings...
- Page 94 Service Manual 18/24K The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 95 Service Manual Part Code Description GWH18QD-K6DNA1D/o GWH18QD-K6DNA1D/o Product Code CB419W15600 CB419W15601 22413045 22413045 Front Grill 01535013P 01535013P Front Panel 06123401 06123401 Drainage Connecter 02803270P 02803270P Chassis Sub-assy 06813401 06813401 Drainage hole Cap 009001060006 009001060006 Compressor and fittings 4300876704 4300876704 Magnet Coil 030152060089 030152060089 4-Way Valve Assy...
- Page 96 Service Manual Part Code Description GWH24QE-K6DNA1E/o GWH24QE-K6DNA1E/o Product Code CB419W15700 CB419W15701 Front Grill 22415010 22415010 Front Panel 01535013P 01535013P Drainage Connecter 06123401 06123401 Chassis Sub-assy 0120581601P 01205816P Drainage hole Cap 06813401 06813401 Compressor and fittings 009001000195 009001000195 Magnet Coil 4300040087 4300040087 4-Way Valve Assy 03073274...
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Page 97: 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 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 98 Service Manual Step Procedure Panel 3. Remove panel Display Open the front panel; separate the panel Screws rotation shaft from the groove fixing the front panel and then removes the front panel. Note: The display of some models is fixed on Panel rotation the panel;...
- Page 99 Service Manual Step Procedure Cold plasma generator 6. Remove electric box assy Screws Loosen the connection clasps between Cold plasma generator and electric box, and then remove the cold plasma Electric box generator. Step motor Clasps Grounding Indoor tube screw temperature sensor Electric box assy ①...
- Page 100 Service Manual Step Procedure 7. Remove evaporator assy Remove 3 screws fixing evaporator assy. Screws Connection pipe clamp At the back of the unit, Loosen the clasp,connection pipe clamp and then remove the connection pipe clamp. Clasp Groove Rear Case assy First remove the left side of evaporator from Clasp the groove of bottom shell and then remove...
- Page 101 Service Manual Step Procedure 8. Remove motor and cross flow blade Remove 3 screws fixing motor clamp and then remove the motor clamp. Motor clasp Screws Cross flow Remove the at the connection place of Motor cross flow blade and motor; lift the motor and cross flow blade upwards to remove them.
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Page 102: 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 103 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 104 Service Manual Step Procedure 6. Remove protective grille and right side plate Protective Remove the screws 1 fixing protective grille grille and then remove the protective 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 105 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 106 Service Manual Step Procedure Clapboard 11. Remove clapboard sub-assy Loosen the screws of the Clapboard Sub- Assy . The Clapboard Sub-Assy has a hook on thelower side. Lift and pull the Clapboard Sub- Assyto remove. 12. Remove Compressor Remove the 2 screws fixing the gas valve. Unsolder the welding spot connecting gas valveand air return pipe and remove the gas valve.(Note: it is necessary to warp the gas...
- Page 107 Service Manual Steps Procedure 1.Remove big handle Before disassamble． Remove the screws fixing handle、valve big handle cover and then remove them. valve cover 2. Remove top cover top cover Remove the screws fixing top panel and then remove the top panel. Installation and Maintenance...
- Page 108 Service Manual Step Procedure 3.Remove grille 、protective grille and front panel Remove connection screws between the front grille and the front panel. Then remove the front grille. Remove connection screws connecting the front protective panel with the chassis and the motor support, and grille then remove the front panel.
- Page 109 Service Manual Step Procedure 6.Remove motor and motor support Remove the screws fixing motor and then remove the motor. Remove the screws fixing motor support and then remove the motor support. motor support motor 7.Remove electric box assy Remove the screws fixing electric box assy; cut off electric box assy the tieline;...
- Page 110 Service Manual Step Procedure electronic expansion 9.Remove 4-way valve assy and valve assy Unsolder the welding joints connecting the 4-way electronic expansion assy valve assy with compressor and condenser; remove the 4-way valve. 4-way valve assy Note: Before unsoldering the welding joint, wrap the 4-way valve with a wet cloth completely to avoid damage to the valve caused by high temperature.
- Page 111 Service Manual 18/24K Steps Procedure 1. Remove top panel Twist off the screws used for fixing the handle and v alve cover , pull the handle and v alve cover up ward to remove it. handle valve top panel Remove the 3 screws connecting the top panel with the front panel and the right side plate, and then remove the top panel.
- Page 112 Service Manual Remove the 5 screw s connecting the pa nel wi th the chassis and the motor support, and then remove the pa nel. panel 3. Remove left side plate and right side plate Remove the scre ws connecting the right side plate with the chassis, the valve support and the electric box, and then remove the right side plate assy .
- Page 113 Service Manual 4. Remove fan motor axial flow blade Remove the nuts fixing the blade and then remove the axial flow blade. fan motor fixing frame Remove the 4 tappin g screw s fixing the motor; disconnect the leading wire insert of the motor and then remove the moto r.
- Page 114 Service Manual 6.Remove Fireproof electric box and soundproof sponge Fireproof electric box Tw ist of f the screws on fireproof electric box and then r emove the fireproof electric box . Since the piping ports on the soundproof sponge are torn easily , remove the soundproof sponge carefully .
- Page 115 Service Manual 8. Remov e 4-w ay valv e assy Discharge the refrigerant completely;unsolder 4-way valve assy the pipelines connecting the compressor and the condenser assy,and then remove the 4-way valve assy. 9. Remov e c ompressor compressor Remove the 3 foot nuts fixing the compressor and then remove the compressor.
- Page 116 Service Manual condenser sub-assy Dissemble the chassis sub-assy and condenser sub-assy. chassis sub-assy Installation and Maintenance...
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Page 117: Appendix 1: Reference Sheet Of Celsius And Fahrenheit
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 118: 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 119: 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 120 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 121 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 122 Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 E-mail: gree@gree.com.cn www.gree.com HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED Add: Unit 2612,26/F.,Miramar Tower 132 Nathan Road,TST,Kowloon,HK Tel: (852) 31658898 Fax: (852) 31651029 For product improvement, specifications and appearance in this manual are subject to change without prior notice.