Gree GWH18AAD-K6DNA1A/I Service Manual
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Gree GWH18AAD-K6DNA1A/I Service Manual

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GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

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Summary of Contents for Gree GWH18AAD-K6DNA1A/I

  • Page 1: Service Manual

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

  • Page 2: Table Of Contents

    5.2 PCB Printed Diagram .....................20 6. Function and Control ..................23 6.1 Remote Controller Introduction ..................23 6.2 GREE+ App Operation Manual ..................27 6.3 Ewpe Smart App Operation Manual ................28 6.4 Brief Description of Modes and Functions ..............29 Part Ⅱ : Installation and Maintenance ..........38...

  • Page 3: Table Of Contents

    Service Manual 9. Maintenance ......................49 9.1 Malfunction Display of Indoor Unit ..................49 9.2 Procedure of Troubleshooting ..................51 9.3 Maintenance method for normal malfunction ..............68 10. Exploded View and Parts List ..............70 10.1 Indoor Unit ........................70 10.2 Outdoor Unit .........................80 11. Removal Procedure ..................88 11.1 Removal Procedure of Indoor Unit ................88 11.2 Removal Procedure of Outdoor Unit ................93...

  • Page 4: Part Ⅰ : Technical Information

    Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: GWH18AAD-K6DNA1B/I GWH18AAD-K6DNA1A/I GWH24AAD-K6DNA1A/I GWH24AAD-K6DNA5A/I GWH18AAD-K6DNA5A/I GWH18AAD-K6DNA5B/I GWH18AAD-K6DNA4A/I GWH18AAD-K6DNA4B/I GWH24AAE-K6DNA4C/I GWH24AAD-K6DNA4A/I GWH18AAD-K6DNA2A/I GWH24AAD-K6DNA2A/I Outdoor Unit: GWH18AAD-K6DNA1B/O GWH18AAD-K6DNA1A/O Technical Information...
  • Page 5 Outdoor product Remote Model Product code Indoor model Outdoor model code code Controller 1 GWH18AAD-K6DNA1A CB476000200 GWH18AAD-K6DNA1A/I CB476N00200 2 GWH18AAD-K6DNA1A CB476000201 GWH18AAD-K6DNA1A/I CB476N00201 GWH18AAD-K6DNA1A/O CB476W00200 3 GWH18AAD-K6DNA5A CB488000700 GWH18AAD-K6DNA5A/I CB488N00700 4 GWH18AAD-K6DNA2A CB477001300 GWH18AAD-K6DNA2A/I CB477N01300 5 GWH18AAD-K6DNA4A CB479000600 GWH18AAD-K6DNA4A/I CB479N00600...

  • Page 6: Specifications

    Rated Heating Current Air Flow Volume(SH/H/M/L/SL) 850/720/610/520/- Dehumidifying Volume 3.21 3.64 SEER HSPF Application Area 23-34 1.GWH18AAD-K6DNA1A/I 2.GWH18AAD-K6DNA5A/I Model of Indoor Unit 3. GWH18AAD-K6DNA4A/I 4.GWH18AAD-K6DNA2A/I 1.CB476N00200/CB476N00201 2.CB488N00700 Product Code of Indoor Unit 3.CB479N00600 4. CB477N01300 Fan Type Cross-flow Diameter Length(DXL) Φ106X706...
  • Page 7 Service Manual Model of Outdoor Unit GWH18AAD-K6DNA1A/O Product Code of Outdoor Unit CB476W00200 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model QXF-B141ZF030A Compressor Oil 68DA Compressor Type Rotary L.R.A. Compressor RLA Compressor Power Input 1410 Overload Protector 1NT11L-6233/KSD115 C/HPC 115/95 Throttling Method Electron expansion valve Operation Temp...
  • Page 8 Service Manual 1.GWH24AAD-K6DNA1A 2.GWH24AAD-K6DNA5A Model 3.GWH24AAD-K6DNA4A 4.GWH24AAD-K6DNA5A 5.GWH24AAD-K6DNA2A 1.CB476000100/CB476000101 Product Code 2.CB488000500 3.CB479000900/CB479000901 4.CB488000501 5.CB477001400 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity 6155 Heating Capacity 6448 Cooling Power Input 1760 Heating Power Input 1860 Cooling Power Current Heating Power Current...
  • Page 9 Service Manual Model of Outdoor Unit GWH24AAD-K6DNA1A/O Product Code of Outdoor Unit CB476W00100 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model QXF-B141ZF030A Compressor Oil 68DA Compressor Type Rotary L.R.A. Compressor RLA Compressor Power Input 1410 Overload Protector 1NT11L-6233/KSD115 C/HPC 115/95 Throttling Method Electron expansion valve Operation Temp...
  • Page 10 Service Manual 1.GWH18AAD-K6DNA1B 2.GWH18AAD-K6DNA5B Model 3.GWH18AAD-K6DNA4B 1.CB476000600 2.CB488000600/CB488000601 Product Code 3.CB479001300/CB479001301 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity 4600 Heating Capacity 5200 Cooling Power Input 1430 Heating Power Input 1400 Cooling Power Current Heating Power Current Rated Input 1700...
  • Page 11 Service Manual Model of Outdoor Unit GWH18AAD-K6DNA1B/O Product Code of Outdoor Unit CB476W00600 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD Compressor Model QXF-B096zE190A Compressor Oil FW68DA Compressor Type Rotary L.R.A. Compressor RLA 4.21 Compressor Power Input Overload Protector Throttling Method Capillary Operation Temp 16~30...
  • Page 12 Service Manual Parameter Unit Value Model GWH24AAE-K6DNA4C Product Code CB479000700 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity 6450 Heating Capacity 6450 Cooling Power Input 1950 Heating Power Input 1735 Cooling Current Input Heating Current Input Rated Input 3100 Rated Current...
  • Page 13 Service Manual Outdoor Unit Model GWH24QE-K6DNA1C/O Outdoor Unit Product Code CB419W12200 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO,LTD. Compressor Model QXFS-D23zX090A Compressor Oil FW68DA Compressor Type Rotary Compressor LRA. Compressor RLA 11.50 Compressor Power Input 2400 Compressor Overload Protector 1NT11L-6233 or HPC115/95/ or KSD115ºC Throttling Method Electron expansion valve Set Temperature Range...

  • 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) 2.2 Capacity Curve in Different Outdoor Temperature...

  • Page 15: Noise Curve

    Service Manual 2.5 Noise Curve Outdoor side noise Indoor side noise High Super High Middle Indoor Fan Motor Rotating Speed Compressor frequency/Hz GWH18AAD-K6DNA1B GWH18AAD-K6DNA1A Technical Information...

  • Page 16: Outline Dimension Diagram

    Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 18/24AAD Φ55 Φ55 24AAE Φ70 Φ70 Unit:mm Model 18/24AAD 24AAE 1078 Technical Information...

  • Page 17: Outdoor Unit

    Service Manual 3.2 Outdoor Unit GWH18AAD-K6DNA1A/O Unit:mm Unit:mm Technical Information...
  • Page 18 Service Manual GWH18AAD-K6DNA1B/O Unit:mm GWH24QE-K6DNA1C/O Unit:mm Technical Information...

  • Page 19: Refrigerant System Diagram

    Service Manual 4. Refrigerant System Diagram GWH18AAD-K6DNA1A GWH18AAD-K6DNA5A GWH18AAD-K6DNA4A GWH18AAD-K6DNA2A GWH24AAD-K6DNA1A GWH24AAD-K6DNA5A GWH24AAD-K6DNA4A GWH24AAD-K6DNA5A GWH24AAD-K6DNA2A GWH24AAE-K6DNA4C 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...

  • Page 20: Electrical Part

    Yellow/Green Black Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ● Indoor Unit All models is except:GWH24AAE-K6DNA4C/I GWH18AAD-K6DNA1A/I(CB476N00201) GWH24AAD-K6DNA1A/I(CB476N00101) GWH18AAD-K6DNA5B/I GWH24AAD-K6DNA5A/I GWH24AAD-K6DNA4A/I GWH18AAD-K6DNA2A/I GWH24AAD-K6DNA2A/I GWH18AAD-K6DNA4B/I(CB479N01301) 60000700068802 Technical Information...
  • Page 21 Service Manual GWH24AAE-K6DNA4C/I 60000700068803 GWH18AAD-K6DNA1A/I(CB476N00201) GWH24AAD-K6DNA1A/I(CB476N00101 ) GWH18AAD-K6DNA5B/I GWH24AAD-K6DNA5A/I GWH24AAD-K6DNA4A/I GWH18AAD-K6DNA2A/I GWH24AAD-K6DNA2A/I GWH18AAD-K6DNA4B/I(CB479N01301) 60000700068811 Technical Information...
  • Page 22 Service Manual ● Outdoor Unit GWH18AAD-K6DNA1A/O GWH24AAD-K6DNA1A/O GWH24QE-K6DNA1C/O 63610000218 GWH18AAD-K6DNA1B/O 600007000884 These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...

  • Page 23: 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 2 Interface of live wire Interface of health function neutral wire 4 Interface of neutral wire 5 Interface of fan 6 Interface of health function live wire 7 Jumper cap 8 Auto button...
  • Page 24 Service Manual Outdoor Unit GWH18AAD-K6DNA1A/O ● Top view Name Compressor three phase input interface Terminal of system high pressure protection Compressor overload protection terminal Interface of temperature sensor Terminal of electronic expansion valve Terminal for low pressure protection Interface of fan 4-way valve terminal 2-way valve terminal Terminal of compressor electric heater...
  • Page 25 Service Manual GWH18AAD-K6DNA1B/O ● 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 Buttons on remote controller On/Off button Mode button Fan button ▲/ button Swing button Sleep button Temp button Turbo button I Feel button Timer button WiFi button WiFi Light button Icon Display on Remote Controller Temp.
  • Page 27 Service Manual 1. ON/OFF button Press this button to turn on the unit. Press this button again to turn off the unit. 2. MODE button Each time you press this button,a mode is selected in a sequence that goes from AUTO, COOL, DRY, FAN, and HEAT *, as the following: * Note: Only for models with heating function.

  • Page 28: Function Introduction For Combination Buttons

    Service Manual TURBO button Under COOL or HEAT mode, press this button to activate / deactivate the Turbo function. 9. I FEEL button Press this button to start I FEEL function and " " will be displayed on the remote controller. After this function is set, the remote controller will send the detected ambient temperature to the controller and the unit will automatically adjust the indoor temperature according to the detected temperature.

  • Page 29: Replacement Of Batteries In Remote Controller

    Service Manual WIFI Function Press this button to turn on the unit. Press this button again to turn off the unit. Press "MODE" and "TURBO" button simultaneously to turn on or turn off WIFI function. When WIFI function is turned on, the " "...

  • Page 30: 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 31: 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 32: Brief Description Of Modes And Functions

    Service Manual 6.4 Brief Description of Modes and Functions 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 33 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)Compulsory defrosting function (1) Start up compulsory defrosting function Under ON status, set heating mode with remote controller and adjust the temperature to 16 C.

  • Page 34: Outdoor Units

    Service Manual 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 b.
  • Page 35 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 36 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 37 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 38 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 39 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 40 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.

  • Page 41: 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 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 refrigerant circuit free from air or substances other than the specified refrigerant.

  • Page 43: 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 44 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 45: 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 46: Installation Procedures

    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 47: Installation Parts-Checking

    Service Manual 8.2 Installation Parts-checking (2) According to the local safety regulations, use qualified power supply circuit and air switch. Name Name (3) Make sure the power supply matches with the requirement Indoor unit Sealing gum of air conditioner. Unstable power supply or incorrect wiring Outdoor unit Wrapping tape may result in electric shock,fire hazard or malfunction.
  • Page 48 Service Manual 5. Connect the Pipe of Indoor Unit (2) Drill the screw fixing holes on the wall with impact drill (the (1) Aim the pipe joint at the corresponding bellmouth.(As show specification of drill head should be the same as the plastic in Fig.5) expansion particle) and then fill the plastic expansion particles (2) Pretightening the union nut with hand.
  • Page 49 Service Manual 7. Connect Wire of Indoor Unit 8. Bind up Pipe (1) Open the panel, remove the screw on the wiring cover and (1) Bind up the connection pipe, power cord and drain hose then take down the cover.(As show in Fig.11) with the band.(As show in Fig.14) screw (2) Reserve a certain length of drain hose and power cord...

  • Page 50: Installation Of Outdoor Unit

    Service Manual 8.6 Installation of Outdoor unit Refer to the following table for wrench moment of force: Tightening torque(N . m) 1. Fix the Support of Outdoor Unit(Select it according to Hex nut diameter(mm) the actual installation situation) Φ6 15~20 Φ9.52 30~40 (1) Select installation location according to the house structure.

  • Page 51: Vacuum Pumping And Leak Detection

    Service Manual (3) The water outlet cant be placed in water in order to drain 8.8 Check after Installation and Test smoothly.(As show in Fig.27) operation 1. Check after Installation Check according to the following requirement after finishing installation. The drain hose can't be fluctuant Items to be checked Possible malfunction Has the unit been...

  • Page 52: Maintenance

    Service Manual 9. Maintenance 9.1 Malfunction Display of Indoor Unit 1. Malfunction display requirement When there are several malfunctions, they will be displayed circularly. 2. Malfunction display method (1) Hardware malfunction: immediate display; refer to “malfunction display table”; (2) Operation state: immediate display; refer to “malfunction display table”; (3) Other malfunctions: it is displayed after the compressor stops for 200s;...
  • Page 53 Service Manual ●Discharging method (1) remove the inverter cover(Outdoor Unit) Inverter cover P.C.board (Soldered surface) (2)As shown below,connect the discharge resistance(approx.100Ω20W)or plug of the sold ering iron to voltage between + - terminals of the electrolytic capacitor on PC Board for 30s, and then peformedischarging. NOTE: A large-capacity electrolytic capacitor is used in the outdoor unit controller(inverter).Therefore,if the power supply is turned off,charge(charging voltage DC280V to 380V)remains and disc harging takes a lot of time..

  • Page 54: 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 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 cant 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) Communication malfunction (E6) Troubleshooting for E6 malfunction Disconnect power and check if the connection wire of indoor and outdoor units and the built-in wire of electric box are correctly connected. Connect the wire properly according Is malfunction Correct connection? to the wiring eliminated?
  • Page 59 Service Manual (6). 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 60 Service Manual Outdoot Unit (1) Malfunction of Desynchronizing of Compressor (H7) Main check point: Whether the system pressure is too high? Whether the electronic expansion valve can work normally? Whether the radiation for the unit is in good condition? Malfunction diagnosis process: Desynchronizing malfunction occurs after de-energizing and turning on the unit...
  • Page 61 Service Manual Desynchronizing malfunction occurs during operation process Check whether Whether the outdoor fan can Replace fan capacitor the fan terminal is operate normally? connected well Improve the radiation circumstances for the Whether the radiation for the unit (such as clean heat unit is in good condition? Replace outdoor fan exchanger, improve...
  • Page 62 Service Manual (2) Malfunction of Temperature Sensor (F3/F4/F5) Main check point: Whether the temperature sensor is damaged? Whether the terminal of temperature sensor is loose or not connected? Whether the main board is damaged? Malfunction diagnosis process: Start the troubleshooting for temperature sensor Check the connection between temperature sensor and wiring...
  • Page 63 Service Manual (3) Malfunction of Overload Protection of Compressor (H3) and Discharge High-temperature Protection of Compressor (E4) Main check point: Whether the electronic expansion valve is connected well and whether its damaged? Whether the refrigerant is leaking? Whether the overload protector is damaged? Malfunction diagnosis process: Start Whether the overload protector is...
  • Page 64 Service Manual (4) Charging Malfunction of Capacitor (PU) Main check point: Whether input power is normal? Main board is damaged. Malfunction diagnosis process: Energize and turn on the unit; wait for 1 min Measure the voltage at both ends of big electrolytic capacitor with the DC notch of universal meter There is malfunction for the...
  • Page 65 Service Manual (5) Malfunction of Overload Protection (E8) Main check point: Whether the tube temperature sensor is normal? Whether the outdoor ambient temperature is within the normal range? Whether indoor fan and outdoor fan can operate normally? Whether radiation environment inside or outside the unit is good? Malfunction diagnosis process: Start Replace the tube temperature...
  • Page 66 Service Manual 6. 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 67 Service Manual (7) Malfunction of Communication (E6) Main check point: Check whether connection wires between indoor unit and outdoor unit and wiring inside the unit are connected well? Check the main board of indoor unit or main board of outdoor unit is damaged? Malfunction diagnosis process: Communication malfunction De-energize the unit and then...
  • Page 68 Service Manual (8) Malfunction of Failure Start-up of Compressor (LC) Main check point: Whether the compressor wires are connected correctly? Whether the stop time for compressor is enough? Whether compressor is damaged? Whether the refrigerant-charging volume is superfluous? Malfunction diagnosis process: Energize and turn on the unit Whether the stop time for...
  • Page 69 Service Manual (9) 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 70 Service Manual (10) Other Malfunction 1.IPM module temperature sensor is open-circuited (P7) Hardware of main board is damaged. Please replace main board. 2.Overheating protection of IPM module (P8) ① Poor radiation because the module radiator is dirty; ② IPM module is damaged; ③...

  • Page 71: Maintenance Method For Normal Malfunction

    Service Manual 9.3 Maintenance method 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 72 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...

  • Page 73: 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 74 Service Manual Part Code Description GWH18AAD-K6DNA1B/I GWH18AAD-K6DNA1A/I GWH24AAD-K6DNA1A/I Product Code CB476N00600 CB476N00200 CB476N00100 Front Panel 20000300003101T 20000300003101T 20000300003101T Display Board 300001000037 300001000037 300001000037 Filter Sub-Assy 11122089 11122089 11122089 Front Case 20000200000801 20000200000801 20000200000801 Guide Louver 20000400000401 20000400000401 20000400000401 Axile Bush...
  • Page 75 Service Manual Part Code Description GWH18AAD-K6DNA5A/I GWH18AAD-K6DNA4A/I Product Code CB488N00700 CB479N00600 Front Panel 200003000114T01 200003000089T Display Board 300001000042 300001000042 Filter Sub-Assy 11122089 11122089 Front Case 20000200000801 20000200000801 Guide Louver 20000400000401 20000400000401 Axile Bush 10542036 10542036 Air Louver 10512732 10512732 Helicoid Tongue 26112512 26112512 Left Axile Bush...
  • Page 76 Service Manual Part Code Description GWH24AAD-K6DNA5A/I GWH24AAE-K6DNA4C/I Product Code CB488N00500 CB479N00700 Front Panel 200003000114T01 200003000097T Display Board 300001000042 300001000042 Filter Sub-Assy 11122089 11012007 Front Case 20000200000801 20000200001502 Guide Louver 20000400000401 20000400001301 Axile Bush 10542036 10542036 Air Louver 10512732 10512737 Helicoid Tongue 26112512 26112513 Left Axile Bush...
  • Page 77 Service Manual Part Code Description GWH18AAD-K6DNA4B/I GWH18AAD-K6DNA5B/I Product Code CB479N01300 CB488N00600 Front Panel 200003000089T 200003000114T01 Display Board 300001000042 300001000042 Filter Sub-Assy 1112208906 11122089 Front Case 20000200000801 20000200000801 Guide Louver 20000400000401 20000400000401 Axile Bush 10542036 10542036 Air Louver 10512732 10512732 Helicoid Tongue 26112512 26112512 Left Axile Bush...
  • Page 78 Service Manual Part Code Description GWH18AAD-K6DNA1A/I GWH24AAD-K6DNA1A/I Product Code CB476N00201 CB476N00101 Front Panel 20000300003101T 20000300003101T Display Board 300001000037 300001000037 Filter Sub-Assy 1112208906 1112208906 Front Case 20000200000801 20000200000801 Guide Louver 20000400000401 20000400000401 Axile Bush 10542036 10542036 Air Louver 10512732 10512732 Helicoid Tongue...
  • Page 79 Service Manual Part Code Description GWH18AAD-K6DNA5B/I GWH24AAD-K6DNA4A/I Product Code CB488N00601 CB479N00900 Front Panel 200003000114T01 000003000155 Display Board 300001000042 300001000042 Filter Sub-Assy 1112208906 11122089 Front Case 20000200000801 20000200000801 Guide Louver 20000400000401 20000400000401 Axile Bush 10542036 10542036 Air Louver 10512732 10512732 Helicoid Tongue 26112512 26112512 Left Axile Bush...
  • Page 80 Service Manual Part Code Description GWH24AAD-K6DNA5A/I GWH24AAD-K6DNA4A/I Product Code CB488N00501 CB479N00901 Front Panel 200003000114T01 200003000089T Display Board 300001000042 300001000042 Filter Sub-Assy 1112208906 1112208906 Front Case 20000200000801 20000200000801 Guide Louver 20000400000401 20000400000401 Axile Bush 10542036 10542036 Air Louver 10512732 20000400000401 Helicoid Tongue 26112512 26112512 Left Axile Bush...
  • Page 81 Service Manual Part Code Description GWH18AAD-K6DNA2A/I GWH24AAD-K6DNA2A/I Product Code CB477N01300 CB477N01400 Front Panel 20000300008101T 20000300008101T Display Board 300001000037 300001000037 Filter Sub-Assy 1112208906 1112208906 Front Case 20000200000801 20000200000801 Guide Louver 20000400000401 20000400000401 Axile Bush 10542036 10542036 Air Louver 10512732 10512732 Helicoid Tongue 26112512 26112512 Left Axile Bush...
  • Page 82 Service Manual Part Code Description GWH18AAD-K6DNA4B/I Product Code CB479N01301 Front Panel 000003000155 Display Board 300001000042 Filter Sub-Assy 1112208906 Front Case 20000200000801 Guide Louver 20000400000401 Axile Bush 10542036 Air Louver 10512732 Helicoid Tongue 26112512 Left Axile Bush 10512037 Rear Case assy 000001000009 Rubber Plug (Water Tray) 76712012...
  • Page 83 Service Manual 10.2 Outdoor Unit GWH18AAD-K6DNA1A/O The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 84 Service Manual Part Code Description GWH18AAD-K6DNA1A/O Product Code CB476W00200 Front Grill 22413046 Cabinet 01433034P Axial Flow Fan 10333014 Chassis Sub-assy 01205176P Drainage Joint 26113009 Compressor and Fittings 00103919G 4-Way Valve Assy 030152000146 Valve Support Sub-Assy 01713115P Cut off Valve Sub-Assy 030057000072 Cut off Valve Sub-Assy 07133774...
  • Page 85 Service Manual The component picture is only for reference; please refer to the actual product. Technical Information...
  • Page 86 Service Manual Part Code Description GWH24AAD-K6DNA1A/O Product Code CB476W00100 Front Grill 22415010 Front Panel 01535013P Drainage Connecter 06123401 Chassis Sub-assy 01700000161P01 Drainage Joint 06123401 Compressor and Fittings 00103919G Magnet Coil 4-Way Valve Assy 030152000073 Cut off Valve Assy 07133844 Cut off Valve Sub-Assy 07133843 Valve support assy 26113017...
  • Page 87 Service Manual GWH18AAD-K6DNA1B/O 22 23 24 25 26 The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 88 Service Manual Part Code Description GWH18AAD-K6DNA1B/O Product Code CB476W00600 Handle Supporting Board 01173194 Fan Motor 011002000529 Motor Support 1501308507 Condenser Assy 01703136 Coping 01253081 Rear Grill 01475014 Clapboard Sub-Assy 01233180 Compressor and Fittings 00103925G Compressor Gasket 76710287 4-Way Valve Assy 030152000158 Big Handle 2623343106...
  • Page 89 Service Manual GWH24QE-K6DNA1C/O The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 90 Service Manual Part Code Description GWH24QE-K6DNA1C/O Product Code CB419W12200 22415010 Front Grill 01535013P Front Panel 06123401 Drainage Connecter 01205816P Chassis Sub-assy 06813401 Drainage hole Cap 00103920 Compressor and fittings 4300040087 Magnet Coil 03073274 4-Way Valve Assy 07133844 Cut off Valve Assy 1/2 07133855 Cut off Valve Sub-Assy 01705046P...

  • Page 91: Removal Procedure

    Service Manual 11. Removal Procedure Caution: discharge the refrigerant 11.1 Removal Procedure of Indoor Unit completely before removal. Step Procedure 1. Remove filter Panel Open the panel. Loosen the clasp shown in the fig and then pull the left filter and right filer outwards to remove them.
  • Page 92 Service Manual Step Procedure 3. Remove panel 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 Screws the panel;...
  • Page 93 Service Manual Step Procedure 6. Remove electric box assy Screws Loosen the connection clasps between Clasps Cold plasma generator and electric box, and then remove the cold plasma generator. Shield cover of Electric box Electric box Step motor ① Cut off the wire binder and pull out the Indoor tube Grounding indoor tube temperature sensor.
  • Page 94 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 95 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.

  • Page 96: Removal Procedure Of Outdoor Unit

    Service Manual 11.2 Removal Procedure of Outdoor Unit Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies GWH18AAD-K6DNA1A/O and discharge the refrigerant completely before removal. Step Procedure 1. Remove big handle Remove the screw fixing big handle; slide out Screw the big handle down wards to make the clasp Big handle...
  • Page 97 Service Manual Step Procedure 4.Remove cabinet Remove the screws fixing cabinet and then remove the cabinet. Cabinet Screw 5.Remove right side plate and rear grill Remove the screws fixing right side plate Right side plate and then remove the right side plate. Screw Screw Remove the screws and then remove the...
  • Page 98 Service Manual Step Procedure 6.Remove lef side plate Remove the screws fixing left side plate and then remove the letf side plate. Left side plate Screw 7.Remove axial flow blade Axial flow blade Remove the nut fixing axial flow blade and then remove the axial flow blade.
  • Page 99 Service Manual Step Procedure 9.Remove motor Remove the screws fixing motor and then remove the motor. Screw Motor 10.Remove motor support Motor support Remove the screws fixing motor support and then remove the motor support. Screw 11.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 .
  • Page 100 Service Manual Step Procedure 12.Remove compressor Remove 3 foot nuts on compressor, and then remove the compressor. Foot nuts Note: Protect the ports of discharge pipe and suction pipe to avoid foreign objects to enter it. Compressor 13.Remove clapboard Remove the screws fixing clapboard and Screw then remove the clapboard.
  • Page 101 Service Manual Step Procedure Condenser 15.Remove condenser Remove one screw fixing the condenser, then remove the condenser. Screw Installation and Maintenance...
  • Page 102 Service Manual GWH24AAD-K6DNA1A/O 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 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 103 Service Manual Remove the 5 screws connecting the panel with the chassis and the motor support, and then remove the panel. Remove the 6 screws connecing the left side plate and right side plate and then remove rear grill rear grill panel 3.
  • Page 104 Service Manual 4. Remove fan motor axial flow blade Remove the nuts fixing the blade and then remove the axial flow blade. motor support 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 105 Service Manual 6.Remove soundproof sponge Since the piping ports on the soundproof sponge are torn easily, remove the soundproof sponge carefully soundproof sponge 7. Remove Isolation sheet x i f and then remove the Isolation sheet. Isolation sheet 8. Remov e 4-way valv e assy Discharge the refrigerant completely;unsolder the pipelines connecting the compressor and the condenser assy,and then remove the 4-way...
  • Page 106 Service Manual 9. Remov e compressor Remove the 3 foot nuts fixing the compressor and then remove the compressor. compressor 10.Remove condenser sub-assy Electron expansion valve support Remove the screws connecting the support (condenser) and condenser assy,and then remove the support(condenser). condenser sub-assy Remove the chassis sub-assy and condenser sub-assy.
  • Page 107 Service Manual GWH18AAD-K6DNA1B/O Steps Procedure 1. Before disassembly 2.Remove big handle big handle big handle and then remove the handle. big handle 3. Remove top cover top cover Remove connection screws connecting the top panel with the front panel and the right side plate, and then remove the top panel.
  • Page 108 Service Manual Installation and Maintenance...
  • Page 109 Service Manual Installation and Maintenance...
  • Page 110 Service Manual Installation and Maintenance...
  • Page 111 Service Manual GWH24QE-K6DNA1C/O 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 Steps Procedure Remove the screws connecting the outer case with motor support, isolation plate and chassis; lift the outer case upwards; loosen the clasps of outer case with right side plate and left side plate, and then remove the outer case. outer case 3.
  • Page 113 Service Manual Steps Procedure 4. Remove axial flow blade Remove the nut fixing axial flow blade and then remove the blade. axial flow fan motor support Remove the 6 screws fixing the motor and then remove the motor. Remove the 2 screws connecting the motor support and chassis, and then loosen the stopper to remove the motor support.
  • Page 114 Service Manual Steps Procedure 6. Remove the soundproof sponge Tear off the sticking stripe and then remove the soundproof sponge. soundproof sponge 7. Remove isolation plate Remove the 2 screws connecting the isolation plate and condenser side plate; remove the 3 screws connecting the isolation plate and chassis, and then remove the isolation plate.
  • Page 115 Service Manual Steps Procedure 9. Remove compressor compressor Remove the 3 foot nuts fixing compressor and then lift the compressor upwards to remove the compressor and damping cushion. Note: Keep the ports of discharge pipe and suction pipe from foreign objects. condenser sub-assy 10.

  • Page 116: 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 60.8 69/70 69.8 78/79 78.8 62/63...

  • Page 117: 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 118: 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 119 Service Manual Resistance Table of Tube Temperature Sensors for Outdoor and Indoor (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 120 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 121 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.

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