Gree GWC18QD-D3DNA6E (LC) Service Manual
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Gree GWC18QD-D3DNA6E (LC) Service Manual

Lomo series split air conditioner
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Change for Life
Service Manual
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

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SYLVAIN DESCHENES
February 28, 2025

defrost mode, the outdoor unit is frozen

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1 comments:
Mr. Anderson
February 28, 2025

If the outdoor unit of a Gree GWC18QD-D3DNA6E (LC) is frozen in defrost mode, the system will enter compulsory defrosting status. The heating indicator on the indoor unit will turn ON for 10 seconds and OFF for 0.5 seconds repeatedly. If the unit has malfunctioned or stopped due to protection, compulsory defrosting can only be started after the issue is resolved. The unit will exit defrosting mode automatically based on the actual defrosting result and resume normal heating operation.

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Summary of Contents for Gree GWC18QD-D3DNA6E (LC)

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

  • Page 2: Table Of Contents

    Service Manual Table of Contents Part Ⅰ : Technical Information ...............1 1. Summary ........................1 2. Specifications ......................3 2.1 Specification Sheet ......................3 2.2 Operation Characteristic Curve ..................7 2.3 Capacity Variation Ratio According to Temperature ............7 2.4 Noise Curve ........................8 2.5 Cooling and Heating Data Sheet in Rated Frequency .............8 3.
  • Page 3 Service Manual 9. Maintenance ......................38 9.1 Precautions before Maintenance ..................38 9.2 Error Code List .......................39 9.3 Troubleshooting for Main Malfunction ................42 9.4 Troubleshooting for Normal Malfunction .................56 10. Exploded View and Parts List ..............58 10.1 Indoor Unit ........................58 10.2 Outdoor Unit .........................76 11.

  • Page 4: Part Ⅰ : Technical Information

    Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: GWH18QD-D3DNA5E/I(CB425N04700) GWH18QD-D3DNA5E/I(CB425N04701 CB425N04702) GWC18QD-D3DNA5E/I GWC24QE-D3DNA5E/I GWH24QE-D3DNA5E/I(CB425N05001 CB425N05002) GWH24QE-D3DNA5E/I(CB425N05000 ) A6 Panel B2 Panel B4 Panel C2 Panel A1 Panel B8 Panel Technical Information...
  • Page 5 Service Manual Outdoor Unit: GWC18QD-D3DNA6E/O(LC) GWH18QD-D3DNA6E/O(LCLH) GWC24QE-D3DNA6E/O(LC) GWH24QE-D3DNA6E/O(LC)(LH) Remote Controller: YAN1F1F Model List: Indoor product Outdoor product Model Product code Indoor model Outdoor model code code GWC18QD-D3DNA6E(LC) CB427001700 GWC18QD-D3DNA6E/I CB427N01700 GWC18QD-D3DNB4E(LC) CB434001500 GWC18QD-D3DNB4E/I CB434N01500 GWC18QD-D3DNB2E(LC) CB432002700 GWC18QD-D3DNB2E/I CB432N02700 GWC18QD-D3DNA5E(LC) CB425004800 GWC18QD-D3DNA5E/I CB425N04800 GWC18QD-D3DNA6E/O(LC) CB427W01700 GWC18QD-D3DNC2E (LC) CB439000500 GWC18QD-D3DNC2E/I CB439N00500...

  • Page 6: Specifications

    Service Manual 2. Specifications 2.1 Specification Sheet 1.GWC18QD-D3DNA6E(LC) 1.GWH18QD-D3DNA6E(LCLH) 2.GWC18QD-D3DNB4E(LC) 2.GWH18QD-D3DNB4E(LCLH) 3.GWC18QD-D3DNB2E(LC) 3.GWH18QD-D3DNB2E(LCLH) Model 4.GWC18QD-D3DNA5E(LC) 4.GWH18QD-D3DNC2E(LCLH) 5.GWH18QD-D3DNB8E(LCLH) 5.GWC18QD-D3DNC2E(LC) 6.GWH18QD-D3DNA5E(LCLH) 6.GWC18QD-D3DNB8E(LC) 7.GWH18QD-D3DNA1E(LCLH) 7.GWC18QD-D3DNA1E(LC) 1.CB427002000 2.CB434001200 1.CB427001700 2.CB434001500 3.CB432002800 4.CB439000600 3.CB432002700 4.CB425004800 Product Code 5.CB438001500 6.CB425004700 5.CB439000500 6.CB438001900 CB425004701 CB425004702 7.CB419007900 7.CB419008000 Rated Voltage 208/230 208/230...
  • Page 7 Service Manual Model of Outdoor Unit GWC18QD-D3DNA6E/O(LC) GWH18QD-D3DNA6E/O(LCLH) Outdoor Unit Product Code CB427W01700 CB427W02000 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO.,LTD CO.,LTD Compressor Model QXA-B141zF030A QXA-B141zF030A Compressor Oil RB68EP RB68EP Compressor Type Rotary Rotary Compressor Locked Rotor Amp (L.R.A) Compressor RLA 7.20 7.20...
  • Page 8 Service Manual 1.GWC24QE-D3DNA6E(LC) 1.GWH24QE-D3DNA6E(LCLH) 2.GWC24QE-D3DNB4E(LC) 2.GWH24QE-D3DNB4E(LCLH) 3.GWC24QE-D3DNB2E(LC) 3.GWH24QE-D3DNB2E(LCLH) Model 4.GWC24QE-D3DNA5E(LC) 4.GWH24QE-D3DNC2E(LCLH) 5.GWC24QE-D3DNC2E(LC) 5.GWH24QE-D3DNB8E(LCLH) 6.GWC24QE-D3DNB8E(LC) 6.GWH24QE-D3DNA5E(LCLH) 7.GWC24QE-D3DNA1E(LC) 7.GWH24QE-D3DNA1E(LCLH) 1.CB427002400 2.CB434001400 1.CB427002300 2.CB434001900 3.CB432002900 4.CB439001500 3.CB432003000 4.CB425004900 Product Code 5.CB438001800 6.CB425005000 5.CB439000700 6.CB438001700 CB425005001 CB425005002 7.CB419007200 7.CB419007800 Rated Voltage 208/230 208/230 Power Supply Rated Frequency Phases Power Supply Mode...
  • Page 9 Service Manual Model of Outdoor Unit GWC24QE-D3DNA6E/O(LC) GWH24QE-D3DNA6E/O(LCLH) Outdoor Unit Product Code CB427W02300 CB427W02400 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO.,LTD CO.,LTD Compressor Model QXA-B141zF030A QXA-B141zF030A Compressor Oil 68EP 68EP Compressor Type Rotary Rotary Compressor Locked Rotor Amp (L.R.A) 25.00 25.00 Compressor RLA...

  • Page 10: Operation Characteristic Curve

    Service Manual 2.2 Operation Characteristic Curve Cooling Heating Cooling Heating Conditions Indoor:DB80°F/WB66.9°F Outdoor:DB95°F Indoor air flow:Super High Pipe length:24.6ft Conditions Indoor:DB70°F/WB60°F Outdoor:DB19.94°F/WB19.04°F Indoor air flow:Super High Pipe length:24.6ft 10 20 30 40 50 60 70 80 90 100 Compressor speed (rps) Compressor speed (rps) 2.3 Capacity Variation Ratio According to Temperature Cooling...

  • Page 11: Noise Curve

    Service Manual 2.4 Noise Curve Indoor side noise Outdoor side noise Heating Cooling Compressor frequency(Hz) Indoor fan motor rating speed 2.5 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...

  • Page 12: Outline Dimension Diagram

    Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 7 3/16 Φ2 3/16 Φ2 3/16 1 1/2 7 1/2 5 1/2 8 1/8 7 5/16 Φ2 3/4 Φ2 3/4 1 11/16 3 1/8 Unit:inch Models 38 3/16 11 13/16 8 13/16 42 7/16 12 13/16 9 11/16...

  • Page 13: Outdoor Unit

    Service Manual 3.2 Outdoor Unit 13 3/8 15 5/8 Unit: inch Technical Information...

  • Page 14: Refrigerant System Diagram

    Service Manual 4. Refrigerant System Diagram Cooling only models Indoor unit Outdoor unit Gas pipe side Valve Di s charge Heat exchanger (evaporator) Suction Accumlator Compressor Heat exchanger Liquid pipe (condenser) side Valve Capillary Strainer Cooling and heating models Outdoor unit Indoor unit Gas pipe side...

  • Page 15: 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 16 Service Manual ● Outdoor Unit GWC18QD-D3DNA6E/O GWC24QE-D3DNA6E/O 63610000446 GWH18QD-D3DNA6E/O GWH24QE-D3DNA6E/O The above data is subject to change without notice. Please refer to the nameplate of the unit. Technical Information...

  • Page 17: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram Indoor Unit ● Top view 1 Neutral wire 2 Motor of indoor fan 3 Jumper cap 4 Up&down swing motor 5 Feedback interface of indoor fan 6 Interface of temperature sensor Interface of wired controller(only for the mode with this function) 8 Display interface 9 Control port of compressor...
  • Page 18 Service Manual Outdoor Unit ● Top view 1 Interface of compressor High pressure protection of system Low-temperature cooling temperature sensor Overload protection of compressor 5 Interface of temperature sensor 6 Electronic expansion valve Low pressure protection of system 8 Interface of fan 9 Interface of 4-way valve 10 Interface of 2-way valve 11 Electric heating belt of chassis...

  • Page 19: Function And Control

    Service Manual 6. Function and Control 6.1 Remote Controller Introduction ON/OFF button MODE button 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 I feel Send signal...
  • Page 20 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 21 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 22: Function Introduction For Combination Buttons

    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 factory setting to reach to the best energy-saving effect.

  • Page 23: Brief Description Of Modes And Functions

    Service Manual 6.2 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 60.8~86.0 (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 24 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 60.8 F.

  • Page 25: 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 26 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 27 Service Manual 1. Starting estimation: After the compressor stopped working for 180s, if T > [T (the temperature of hysteresis is 35.6ºF )], inner pipe frozen-preventing frequency-limited temperature the 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 28 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 29 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 30 Service Manual (12) Starting-up Failure Protection for Compressor Stop the compressor after its starting-up fails, restart it after 20s if the fault doesn’t 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 31 Service Manual 6. Electric Heating Function of Chassis (1) When Toutdoor amb.≤32ºF , the electric heating of chassis will operate; (2) When Toutdoor amb.>35.6ºF , the electric heating of chassis will stop operation; (3)When 32ºF <Toutdoor amb.≤35.6ºF, the electric heating of chassis will keep original status. 7.

  • Page 32: 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 33 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 34: Installation

    Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 6 At least 6 Drainage pipe unit:inch Installation and Maintenance...

  • Page 35: 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 36: Installation Parts-Checking

    Service Manual 8.2 Installation Parts-checking 8.4 Electric Connection Requirement Name Name 1. Safety Precaution Indoor unit Sealing gum (1) Must follow the electric safety regulations when installing Outdoor unit Wrapping tape the unit. Support of outdoor (2) According to the local safety regulations, use qualified Connection pipe unit power supply circuit and air switch.
  • Page 37 Service Manual in the holes. 5. Connect the Pipe of Indoor Unit (3) Fix the wall-mounting frame on the wall with tapping screws (1) Aim the pipe joint at the corresponding bellmouth.(As show (ST4.2X25TA) and then check if the frame is firmly installed by in Fig.5) pulling the frame.
  • Page 38 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) (2) Reserve a certain length of drain hose and power cord for installation when binding them.

  • Page 39: Installation Of Outdoor Unit

    Service Manual 8.6 Installation of Outdoor Unit Refer to the following table for wrench moment of force: 1. Fix the Support of Outdoor Unit(Select it according to Hex nut diameter(inch) Tightening torque(ft·Ibf) the actual installation situation) Φ1/4 11.10~14.75 Φ3/8 22.12~29.50 (1) Select installation location according to the house structure.

  • Page 40: Vacuum Pumping And Leak Detection

    Service Manual (3) The water outlet can't 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 41: Maintenance

    Service Manual 9. Maintenance 9.1 Precautions before Maintenance There are high-capacity electrolytic capacitors on the outdoor mainboard. Thus, even the power is cut off, there is high voltage inside the capacitors and it needs more than 20min to reduce the voltage to safety value. Touching the electrolytic capacitor within 20min after cutting the power will cause electric shock.

  • Page 42: Error Code List

    Service Manual 9.2 Error Code List Installation and Maintenance...
  • Page 43 Service Manual Complete unit Off 3s current and blink detection 13 times malfunction Off 3s Defrosting will occur in and blink heating mode.Compressor once will operate while indoor It’s the normal state (during fan will stop. blinking, ON 10s and Off 05s) Installation and Maintenance...
  • Page 44 Service Manual 1.Power supply is Malfunction Off 3s abnormal of zero-cross The complete unit stops and blink derection 2.Detection circuit of indoor 17 times control mainboard is abnormal Installation and Maintenance...

  • Page 45: Troubleshooting For Main Malfunction

    Service Manual 9.3 Troubleshooting for Main Malfunction ●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 46 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 47 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 48 Service Manual 4. Communication malfunction E6 Start Cut off power supply. Check if connection line of IDU and ODU and the wire inside electric box are correctly connected. Connect the line Correct connection? according to Malfunction eliminated? wiring diagram. Main board matches Match correctly with display board? Main board of Malfunction eliminated?
  • Page 49 Service Manual ●Outdoor unit: Key detection point "Test point NO." Test point Related elements Test value under normal condition Test 1 Between A and C Neutral wire ,live wire 160V-265V Test 2 Between B and C Neutral wire ,live wire 160V-265V Test 3 Between D and E...
  • Page 50 Service Manual 1.Capacity charging malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit) Main detection point: ● Detect if the voltage of L and N terminal of wiring board is between 210AC-240AC by alternating voltage meter; ● Is reactor (L) well connected? Is connection wire loosened or pull-out? Is reactor (L) damaged? Malfunction diagnosis process: Turn on the unit and wait 1 minute...
  • Page 51 Service Manual 2.IPM protection, desynchronizing malfunction, phase current of compressor is overcurrent (AP1 below is control board of outdoor unit) Main detection point: ● If control board AP1 and compressor COMP is well connected? If they are loosened? If the connection sequence is correct? ●...
  • Page 52 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 53 Service Manual 3.Diagnosis for anti-high temperature, overload protection (AP1 below is control board of outdoor unit) Main detection point: ● If the outdoor ambient temperature is in normal range; ● If the indoor and outdoor fan is running normal; ● If the radiating environment of indoor and outdoor unit is well. Malfunction diagnosis process: Anti-high temperature, overload protection...
  • Page 54 Service Manual 4.Diagnosis for failure start up malfunction (AP1 below is control board of outdoor unit) Main detection point: ● If the compressor wiring is correct? ● If the stop time of compressor is enough? ● If the compressor is damaged? ●...
  • Page 55 Service Manual 5. Diagnosis for compressor synchronism (AP1 below is control board of outdoor unit) Main detection point: ● If the system pressure is over-high? ● If the work voltage is over-low? Malfunction diagnosis process: Synchronism Synchronism after energize the unit occurred during and start it operation...
  • Page 56 Service Manual 6.Diagnosis for overload and discharge malfunction (AP1 below is control board of outdoor unit) Main detection point: ● If the electron expansion valve is connected well? Is the expansion valve damaged? ● If the refrigerant is leakage? ● If the overload protector is damaged? Malfunction diagnosis process: After the unit de-energized...
  • Page 57 Service Manual 7.Communication malfunction (AP1 below is control board of outdoor unit) Main detection point: ● Check if the connection wire and the built-in wiring of indoor and outdoor unit is connected well and no damaged; ● If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is dam- aged Malfunction diagnosis process: Start...
  • Page 58 Service Manual 8.Diagnosis process for outdoor communication circuit Start Test voltage value with Test 10 position in diagram with voltage meter Number jumping Test voltage value with Test 13 position in diagram with voltage meter Number jumping Outdoor unit malfunction Test voltage value with Test 11 position in...

  • Page 59: Troubleshooting For Normal Malfunction

    Service Manual 9.4 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 60 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 61: Exploded View And Parts List

    Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit 18K Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 62 Service Manual Part Code Description GWC18QD-D3DNA6E/I GWC18QD-D3DNB4E/I Product Code CB427N01700 CB434N01500 Front Panel 2002269501S 20000300028 Filter Sub-Assy 11122089 11122089 Decoration board(left and right) 2019267001 Front Case 2002248401 2002248401 Guide Louver 1051276501 1051276501 Axile Bush 10542036 10542036 Air Louver(Manual) 10512732 10512732 Helicoid Tongue 26112512 26112512...
  • Page 63 Service Manual Part Code Description GWH18QD-D3DNA6E/I GWH18QD-D3DNB4E/I Product Code CB427N02000 CB434N01200 Front Panel 2002269501S 20000300028 Filter Sub-Assy 11122089 11122089 Decoration board(left and right) 2019267001 Front Case 2002248401 2002248401 Guide Louver 1051276501 1051276501 Axile Bush 10542036 10542036 Air Louver(Manual) 10512732 10512732 Helicoid Tongue 26112512 26112512...
  • Page 64 Service Manual Part Code Description GWC18QD-D3DNB2E/I GWH18QD-D3DNB2E/I Product Code CB432N02700 CB432N02800 Front Panel 20000300023S 20000300023S Filter Sub-Assy 11122089 11122089 Decoration board(left and right) 20192662 20192662 Front Case 2002248401 2002248401 Guide Louver 1051276501 1051276501 Axile Bush 10542036 10542036 Air Louver(Manual) 10512732 10512732 Helicoid Tongue 26112512...
  • Page 65 Service Manual Part Code Description GWC18QD-D3DNC2E/I GWH18QD-D3DNC2E/I Product Code CB439N00500 CB439N00600 Front Panel 20000300070S 20000300070S Filter Sub-Assy 11122089 11122089 Decoration board(left and right) 20192662 20192662 Front Case 2002248401 2002248401 Guide Louver 1051276501 1051276501 Axile Bush 10542036 10542036 Air Louver(Manual) 10512732 10512732 Helicoid Tongue 26112512...
  • Page 66 Service Manual Part Code Description GWC18QD-D3DNB8E/I GWH18QD-D3DNB8E/I Product Code CB438N01900 CB438N01500 Front Panel 20000300075T 20000300075T Filter Sub-Assy 11122089 11122089 Decoration board(left and right) 20192662 20192662 Front Case 2002248401 2002248401 Guide Louver 1051276501 1051276501 Axile Bush 10542036 10542036 Air Louver(Manual) 10512732 10512732 Helicoid Tongue 26112512...
  • Page 67 Service Manual Part Code Description GWH18QD-D3DNA5E/I Product Code CB425N04702 CB425N04701 Front Panel 2002266902S 2002266902S Filter Sub-Assy 11122089 11122089 Decoration board(left and right) 2019261201/2019261101 2019261201/2019261101 Front Case 2002248401 2002248401 Guide Louver 1051273402 1051273402 Axile Bush 10542036 10542036 Air Louver(Manual) 10512732 10512732 Helicoid Tongue 26112512 26112512...
  • Page 68 Service Manual Part Code Description GWC18QD-D3DNA5E/I GWH18QD-D3DNA5E/I Product Code CB425N04800 CB425N04700 Front Panel 2002266902S 2002266902S Filter Sub-Assy 11122089 11122089 Decoration board(left and right) 2019261201/2019261101 2019261201/2019261101 Front Case 2002248401 2002248401 Guide Louver 1051273402 1051273402 Axile Bush 10542036 10542036 Air Louver(Manual) 10512732 10512732 Helicoid Tongue 26112512...
  • Page 69 Service Manual Part Code Description GWC18QD-D3DNA1E/I GWH18QD-D3DNA1E/I Product Code CB419N07900 CB419N08000 Front Panel 20022481S 20022481S Filter Sub-Assy 11122089 11122089 Decoration board(left and right) 20192612/20192611 20192612/20192611 Front Case 20022484 20022484 Guide Louver 10512734 10512734 Axile Bush 10542036 10542036 Air Louver(Manual) 10512732 10512732 Helicoid Tongue 26112512...
  • Page 70 Service Manual 24K Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 71 Service Manual Part Code Description GWC24QE-D3DNA6E/I GWC24QE-D3DNB4E/I Product Code CB427N02300 CB434N01900 Front Panel 2002270001S 20000300029 Filter Sub-Assy 11012007 11012007 Screw Cover 2425245301 2425245301 Front Case 2002248603 2002248603 Air Louver(Manual) 10512737 10512737 Helicoid Tongue 26112513 26112513 Left Axile Bush 10512037 10512037 Display Board 30565264 30565260...
  • Page 72 Service Manual Part Code Description GWH24QE-D3DNA6E/I GWH24QE-D3DNB4E/I Product Code CB427N02400 CB434N01400 Front Panel 2002270001S 20000300029 Filter Sub-Assy 11012007 11012007 Screw Cover 2425245301 2425245301 Front Case 2002248603 2002248603 Air Louver(Manual) 10512737 10512737 Helicoid Tongue 26112513 26112513 Left Axile Bush 10512037 10512037 Display Board 30565264 30565260...
  • Page 73 Service Manual Part Code Description GWC24QE-D3DNB2E/I GWH24QE-D3DNB2E/I Product Code CB432N03000 CB432N02900 Front Panel 20000300016 20000300016 Filter Sub-Assy 11012007 11012007 Screw Cover 2425245301 2425245301 Front Case 2002248603 2002248603 Air Louver(Manual) 10512737 10512737 Helicoid Tongue 26112513 26112513 Left Axile Bush 10512037 10512037 Display Board 30565260 30565260...
  • Page 74 Service Manual Part Code Description GWC24QE-D3DNB8E/I GWH24QE-D3DNB8E/I Product Code CB438N01700 CB438N01800 Front Panel 20000300076T 20000300076T Filter Sub-Assy 11012007 11012007 Screw Cover 2425245301 2425245301 Front Case 2002248603 2002248603 Air Louver(Manual) 10512737 10512737 Helicoid Tongue 26112513 26112513 Left Axile Bush 10512037 10512037 Display Board 30565260 30565260...
  • Page 75 Service Manual Part Code Description GWC24QE-D3DNC2E/I GWH24QE-D3DNC2E/I Product Code CB439N00700 CB439N01500 Front Panel 20000300071S 20000300071S Filter Sub-Assy 11012007 11012007 Screw Cover 2425245301 2425245301 Front Case 2002248603 2002248603 Air Louver(Manual) 10512737 10512737 Helicoid Tongue 26112513 26112513 Left Axile Bush 10512037 10512037 Display Board 30565278 30565278...
  • Page 76 Service Manual Part Code Description GWH24QE-D3DNA5E/I Product Code CB425N05000 CB425N05001 Front Panel 2002248603 2002248603 Filter Sub-Assy 11012007 11012007 Screw Cover 2425245301 2425245301 Front Case 2002248603 2002248603 Air Louver(Manual) 10512737 10512737 Helicoid Tongue 26112513 26112513 Left Axile Bush 10512037 10512037 Display Board 30565269 30565262 Rear Case assy...
  • Page 77 Service Manual Part Code Description GWH24QE-D3DNA5E/I GWH24QE-D3DNA1E/I Product Code CB425N05002 CB419N07800 Front Panel 2002248603 20022485 Filter Sub-Assy 11012007 11012007 Screw Cover 2425245301 24252453 Front Case 2002248603 2002248601 Air Louver(Manual) 10512737 10512737 Helicoid Tongue 26112513 26112513 Left Axile Bush 10512037 10512037 Display Board 30565260 30565233...
  • Page 78 Service Manual Part Code Description GWC24QE-D3DNA5E/I GWC24QE-D3DNA1E/I Product Code CB425N04900 CB419N07200 Front Panel 2002248603 20022485 Filter Sub-Assy 11012007 11012007 Screw Cover 2425245301 24252453 Front Case 2002248603 20022486 Air Louver(Manual) 10512737 10512737 Helicoid Tongue 26112513 26112513 Left Axile Bush 10512037 10512037 Display Board 30565269 30565233...

  • Page 79: Outdoor Unit

    Service Manual 10.2 Outdoor Unit Cooling only models The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 80 Service Manual Part Code Description GWC18QD-D3DNA6E/O GWC24QE-D3DNA6E/O Product Code CB427W01700 CB427W02300 Front Grill 01473049 01473049 Cabinet 01433047P 01433047P Axial Flow Fan 10335008 10335008 Fan Motor 1501506402 1501506402 Chassis Sub-assy 01700000094P 02803214P Clapboard Assy 01233153 01233153 Compressor and Fittings 00105249G 00105249G Inhalation Tube Sub-assy 03833913 03833916...
  • Page 81 Service Manual Cooling and heating models The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 82 Service Manual Part Code Description GWH18QD-D3DNA6E/O GWH24QE-D3DNA6E/O Product Code CB427W02000 CB427W02400 Front Grill 01473049 01473049 Cabinet 01433047P 01433047P Axial Flow Fan 10335008 10335008 Fan Motor 1501506402 1501506402 Chassis Sub-assy 01700000093P 0280336702P Drainage hole Cap 06813401 06813401 Clapboard Assy 01233153 0123315301 4-Way Valve Assy 03073366 03073324...

  • Page 83: Removal Procedure

    Service Manual 11. Removal Procedure Warning: Be sure to wait for a minimum 11.1 Removal Procedure of Indoor Unit of 20 minutes after turning off all power supplies and discharge the refrigerant NOTE: Take A6 panel for an example. completely before removal. 1.
  • Page 84 Service Manual Loosen the connection clasps between front case sub-assy and bottom case. Lift up the front case sub-assy and take it out. S wing motor Screw off the screws that are locking the swing motor and take the motor off. Installation and Maintenance...
  • Page 85 Service Manual Indoor tube temperature s ensor Cut off the wire binder and pull out the indoor tube temperature sensor. Screw off one grounding screw. Main Remove the wiring terminals of motor and board stepping motor. Remove the electric box assy. G rounding Screw off the screws that are locking each s c rew...
  • Page 86 Service Manual G roove R ear case ass y First remove the left side of evaporator from the groove on the rear case assy. Then remove the right side from the clasp on the C lasp rear case assy. Installation and Maintenance...
  • Page 87 Service Manual Installation and Maintenance...

  • Page 88: 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 and discharge the refrigerant completely before removal. NOTE: Take heat pump for example. Steps Procedure 1.
  • Page 89 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 90 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 91 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 92 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 93: 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 94: 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 95: Appendix 4: List Of Resistance For Temperature Sensor

    Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -2.2 138.1 18.75 138.2 3.848 208.4 1.071 -0.4 128.6 69.8 17.93 3.711 210.2 1.039...
  • Page 96 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -2.2 181.4 25.01 138.2 5.13 208.4 1.427 -0.4 171.4 69.8 23.9 4.948 210.2 1.386 162.1 71.6 22.85 141.8 4.773 1.346 153.3 73.4...
  • Page 97 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -20.2 853.5 120.2 18.34 190.4 4.754 -18.4 799.8 51.8 93.42 17.65 192.2 4.609 -16.6 53.6 89.07 123.8 16.99 4.469 -14.8 703.8 55.4 84.95 125.6 16.36...
  • Page 98 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 For product improvement, specifications and appearance in this manual are subject to change without prior notice.

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