Gree GWH09AECXB-K6DNA1A Service Manual
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Gree GWH09AECXB-K6DNA1A Service Manual

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Service Manual
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

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Summary of Contents for Gree GWH09AECXB-K6DNA1A

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

  • Page 2: Table Of Contents

    6. Function and Control ..........16 6.1 Remote Controller Introduction for YAU1FB ..........16 6.2 Brief Description of Models and Functions ..........20 6.3 GREE+ App Operation Manual ................25 6.4 Ewpe Smart App Operation Manual ..............26 Part Ⅱ : Installation and Maintenance ....27 7.
  • Page 3 Service Manual 8.6 Installation of Outdoor unit .................37 8.7 Vacuum Pumping and Leak Detection ............39 8.8 Check after Installation and Test operation ..........39 9. Maintenance ..............40 9.1 Error Code List ......................40 9.2 Procedure of Troubleshooting ................44 9.3 Troubleshooting for Normal Malfunction ............58 10.

  • Page 4: Part Ⅰ : Technical Information

    Outdoor Unit: GWH09AECXB-K6DNA1A/O GWH12AECXD-K6DNA1A/O Remote Controller: YAU1FB HOLD 3S WiFi Model list: Indoor product Outdoor Model Product code Indoor model Outdoor model code product code 1 GWH09AECXB-K6DNA1A CB370001400 GWH09AECXB-K6DNA1A/I CB370N01400 GWH09AECXB-K6DNA1A/O CB370W01400 2 GWH12AECXD-K6DNA1A CB370001600 GWH12AECXD-K6DNA1A/I CB370N01600 GWH12AECXD-K6DNA1A/O CB370W01600 Technical Information...

  • Page 5: Specification Sheet

    Service Manual 2.1 Specification Sheet Model GWH09AECXB-K6DNA1A Product Code CB370001400 Rated Voltage 220-240 Power Rated Frequency Supply Phases Outdoor Power Supply Mode 2700 Cooling Capacity 3200 Heating Capacity Cooling Power Input Heating Power Input 3.10 Cooling Current Input 3.70 Heating Current Input...
  • Page 6 Service Manual Outdoor Unit Model GWH09AECXB-K6DNA1A/O Outdoor Unit Product Code CB370W01400 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model QXF-A082zC170 Compressor Oil ZE-G;ES RB68GX or equivalent Compressor Type Rotary Compressor LRA. 15.00 Compressor RLA 2.56 Compressor Power Input 756.6 Compressor Overload Protector...
  • Page 7 Service Manual Model GWH12AECXD-K6DNA1A Product Code CB370001600 Rated Voltage 220-240 Power Rated Frequency 50/60 Supply Phases Power Supply Mode Outdoor Cooling Capacity 3500 Heating Capacity 3810 Cooling Power Input Heating Power Input Cooling Current Input 3.73 Heating Current Input Rated Input 1650 Rated Cooling Current 6.21...
  • Page 8 Service Manual Outdoor Unit Model GWH12AECXD-K6DNA1A/O Outdoor Unit Product Code CB370W01600 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO., LTD Compressor Model FTz-AN108ACBD Compressor Oil FW68DA or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA 4.40 Compressor Power Input Compressor Overload Protector Throttling Method Electron expansion valve Set Temperature Range...

  • Page 9: Capacity Variation Ratio According To Temperature

    Service Manual 2.2 Capacity Variation Ratio According to Temperature Heating operation ambient temperature range is -22°C~24°C Cooling: Heating: 140% 140% 120% 120% 100% 100% Condition Cooling Condition Heatin g Indoor:DB27°C/WB19°C Indoor:DB20 °C /WB15°C Indoor air flow:Super High Indoor air flow: Super High Pipe length:5m Pipe length: 5m 40 43...

  • Page 10: Cooling And Heating Data Sheet In Rated Frequency

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

  • Page 11: Outline Dimension Diagram

    3. Outline Dimension Diagram Service Manual 3.1 Indoor Unit Ø55 Ø55 Unit:mm Technical Information...

  • Page 12: Outdoor Unit

    Service Manual 3.2 Outdoor Unit GWH09AECXB-K6DNA1A/O Unit:mm GWH12AECXD-K6DNA1A/O Unit:mm Technical Information...

  • Page 13: Refrigerant System Diagram

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

  • Page 14: Electrical Part

    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. ● Indoor Unit GWH09AECXB-K6DNA1A/I GWH12AECXD-K6DNA1A/I 600007066035 Technical Information...
  • Page 15 Service Manual ● Outdoor Unit GWH09AECXB-K6DNA1A/O GWH12AECXD-K6DNA1A/O 600007064727 These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...

  • Page 16: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram Indoor Unit Name Name Interface of netural wire Interface of cold plasma Interface of communication wire 10 Interface of right drive box Firewire control output Interface of left drive box Input terminal of live wire 12 Interface of WIFI Fuse 13 Interface of temperature sensor...
  • Page 17 Service Manual Outdoor Unit GWH09AECXB-K6DNA1A/O GWH12AECXD-K6DNA1A/O Name Earthing wire Neutral wire, live wire and communication cable 4-way valve Electric heating belt of chasssis Outdoor fan Electronic expansion valve Overload Temperature sensor Three-phase terminal of compressor Technical Information...

  • Page 18: Function And Control

    6. Function and Control Service Manual 6.1 Remote Controller Introduction for YAU1FB Buttons on remote controller Note: ● This is a general use remote controller, it could be used for the air conditioners with multifunction; For some function, which the model doesn't have, if press the corresponding button on the remote controller that the unit will keep the original running status.
  • Page 19 Service Manual Sleep 3 ( ) and cancelthe Sleep, circulate between these, after ● When selceting " " , air conditioner is blowing fan automatically.Horizontal louver will automatically swing up & down electrified, Sleep Cancel is defaulted. at maximum angle. Sleep 1 is Sleep mode 1, in Cool modes;...
  • Page 20 Service Manual 12. I FEEL button ● Under unit off, press this button and hold for 3s to open the air Press this button to turn on I FEEL function. " " icon is displayed on remote controller. The unit automatically adjust temperature guide louver, icon is displayed in indoor unit.
  • Page 21 Service Manual "MODE" buttons simultaneously to switch temperature display Replacement of batteries in remote controller between °C and °F. NOTICE: ● During operation, point the remote control signal sender at the Cancel filterclean reminding receiving window on indoor unit. ● The distance between signal sender and receiving window If the dual-8 nixie tube is fl ashing to display, it reminds the user to should be no more than 8m, and there should be no obstacles clean the filter.

  • Page 22: Brief Description Of Models And Functions

    Service Manual 6.2 Brief Description of Models and Functions 1. Temperature Parameters ◆ Indoor preset temperature (T preset ◆ Indoor ambient temperature (T amb. 2. Basic Functions Once energized, in no case should the compressor be restarted within less than 3 minutes. In the situation that memory function is avail- able, for the first energization, if the compressor is at stop before de-energization, the compressor will be started without a 3-minute lag;...
  • Page 23 Service Manual ◆ In this mode, the temperature setting range is 16 ~30°C(68~86°F). ◆ The air conditioner will adjust the running frequency of the compressor automatically according to the change of ambient temperature. ◆ When the unit is turned off in heating mode, or switched to other mode from heating mode, the four-way valve will be powered off after the compressor stops.
  • Page 24 Service Manual ② Protection a. In cooling operation, protection is the same as that under the cooling mode; b. In heating operation, protection is the same as that under the heating mode; c. When ambient temperature changes, operation mode will be converted preferentially. Once started, the compressor willremain unchanged for at least 6 minutes.
  • Page 25 Service Manual the temperature will not change after rising 2°C(3.6°F) ;after running for 7 hours, the temperature will decrease 1°C(1.8°F) and it will not change after that. 1.3 When the initial set temperature is 28-29°C(82.4~84.2°F),the temperature will rise 1°C(1.8°F) by every hour after sleep function is set; the temperature will not change after rising 1°C(1.8°F) ;...
  • Page 26 Service Manual There should be at least 180s operation time during switchover of each speed. 2. Under cooling mode: auto speed under cooling or auto cooling mode: a. When T ≥T +2°C(3.6°F), indoor fan will operate at high speed; amb. preset b.

  • Page 27: 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 28: Ewpe Smart App Operation Manual

    Service Manual 6.4 Ewpe Smart App Operation Manual Control Flow Chart Internet Cloud intelligent Home Wi-Fi Cellular/ 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 29: Part Ⅱ : Installation And Maintenance

    7. Notes for Installation and Maintenance Service Manual Safety Precautions: Important! 11. For the air conditioner without plug, an air switch must be installed in the circuit. The air switch should be all-pole parting and the contact parting distance should be more than Please read the safety precautions carefully before 3mm.
  • Page 30 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 5.When installing the unit, make sure that connection keep the refrigerant circuit free from air or substances pipe is securely connected before the compressor other than the specified refrigerant.
  • Page 31 Service Manual Installation notes Safety Precautions for Refrigerant ●To realize the function of the air conditioner unit, a special ●The air conditioner is not allowed to use in a room that has running fire (such as fire source,working coal gas ware, refrigerant circulates in the system.
  • Page 32 Service Manual f. Carry back to the service spot for welding ●Make sure that there isnt any naked flame near the outlet of the vacuum pump and its well-ventilated. ●The refrigerant should be recycled into the specialized storage tank. Filling the refrigerant ●Use the refrigerant filling appliances specialized for R32.
  • Page 33 Service Manual Main Tools for Installation and Maintenance Level meter Measuring tape Screw driver Impact drill Drill head Electric drill Electroprobe Universal meter Inner hexagon Electronic Torque wrench Open-end wrench spanner leakage detector Vacuum pump Pressure meter Pipe pliers Pipe pliers Pipe cutter Pipe expander Pipe bender...

  • Page 34: Installation

    8. Installation Service Manual 8.1 Installation Dimension Diagram Space to the wall At least 30cm At least 30cm Space to the wall Space to the obstruction At least 50cm Drainage pipe Installation and Maintenance...
  • Page 35 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 3. Outdoor Unit: (1) Select a location where the noise and outflow air emitted by Name the outdoor unit will not affect neighborhood. Indoor unit (2) The location should be well ventilated and dry, in which the outdoor unit wont be exposed directly to sunlight or strong wind.

  • Page 37: Installation Of Indoor Unit

    Service Manual the following table. Air switch should be included magnet buckle 4. Outlet Pipe and heating buckle function, it can protect the circuit-short and (1) The pipe can be led out in the direction of right, rear right, left overload.
  • Page 38 Service Manual 5. Connect the Pipe of Indoor Unit Drain hose (1) Aim the pipe joint at the corresponding bellmouth.(As show in Fig.5) (2) Pretightening the union nut with hand. Insulating pipe (3) Adjust the torque force by referring to the following sheet. Fig.10 Place the open-end wrench on the pipe joint and place the torque wrench on the union nut.

  • Page 39: Installation Of Outdoor Unit

    Service Manual 8.6 Installation of Outdoor unit 8. Bind up Pipe (1) Bind up the connection pipe, power cord and drain hose with 1. Fix the Support of Outdoor Unit(Select it according the band.(As show in Fig.14) to the actual installation situation) (2) Reserve a certain length of drain hose and power cord for (1) Select installation location according to the house structure.
  • Page 40 Service Manual (2) Fix the power connection wire and signal control wire with 4. Connect Indoor and Outdoor Pipes wire clip (only for cooling and heating unit). (1) Remove the screw on the right handle of outdoor unit and then remove the handle.(As show in Fig.21) Note: (1) After tightening the screw, pull the power cord slightly to...

  • Page 41: Vacuum Pumping And Leak Detection

    Service Manual 8.7 Vacuum Pumping and Leak Detection 8.8 Check after Installation and Test operation 1. Use Vacuum Pump 1. Check after Installation (1) Remove the valve caps on the liquid valve and gas valve and Check according to the following requirement after finishing the nut of refrigerant charging vent.

  • Page 42: Maintenance

    9. Maintenance Service Manual 9.1 Error Code List Display Method Possible Causes(For specific maintenance Malfunction of Indoor Unit A/C Status method, please refer to the following procedure of Name (Error Code) troubleshooting) During cooling and drying operation, Possible reasons: High pressure except indoor fan operates, all loads 1.
  • Page 43 Service Manual During cooling and drying operating, Outdoor ambient Outdoor temperature sensor hasnt been connected well or is compressor stops while indoor fan temperature sensor is damaged. Please check it by referring to the resistance table operates; During heating operation, the open/short circuited for temperature sensor) complete unit will stop operation...
  • Page 44 Service Manual During cooling and drying operation, Malfunction of module compressor will stop while indoor fan will temperature sensor operate; Replace outdoor control panel AP1 During heating operation, the complete circuit unit will stop After the complete unit is de-energized for 20mins, check During cooling operation, compressor will Module high whether the thermal grease on IPM Module of outdoor...
  • Page 45 Service Manual During cooling and drying operation, Malfunction of phase compressor will stop while indoor fan will current detection Replace outdoor control panel AP1 operate; During heating operation, the circuit for compressor complete unit will stop During cooling and drying operation, Malfunction of voltage compressor will stop while indoor fan will dropping for DC...

  • Page 46: 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 47 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Main detection points: ● SmoothlyIs the control terminal of DC motor connected tightly? ● SmoothlyIs the feedback interface of DC motor connected tightly? ● The fan motor can't operate? ●...
  • Page 48 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 49 Service Manual 4. Malfunction of Overcurrent Protection E5 Main detection points: ● EliminatedIs the supply voltage unstable with big fluctuation? ● Is the supply voltage too low with overload? ● Hardware trouble? Malfunction diagnosis process: Troubleshooting for E5 malfunction Is the supply voltage unstable Normal fluctuation is within 10 % of the rated Malfunction is with big fluctuation?
  • Page 50 Service Manual 5. 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 51 Service Manual 6. 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 52 Service Manual 7. 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 53 Service Manual ●Outdoor unit: 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; ●...
  • Page 54 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 55 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 56 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 57 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 once the Out of step occurs in unit is powered on.
  • Page 58 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 59 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:...

  • Page 60: 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 connection After energization, operation indicator isnt bright wait for power recovery.
  • Page 61 Service Manual 4. ODU Fan Motor Cant Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Wrong wire connection, or poor Check the wiring status according to circuit Connect wires according to wiring diagram to make connection diagram sure all wiring terminals are connected firmly Measure the capacity of fan capacitor with an Capacity of the ODU fan motor is universal meter and find that the capacity is out of...

  • Page 62: Exploded View And Parts List

    10. Exploded View and Parts List Service Manual 10.1 Indoor Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 63 Service Manual Description Description Decorative Board (Right) Base Frame Decorative ring (right) Evaporator Support Retaining Plate (Fan motor) Front Case Brushless DC Motor Filter Sub-Assy Motor Holder Wall Mounting Frame Right Driving Box Sub-assy Evaporator Assy Cross Flow Fan Clamp (Right) Display Board Electric Box Connecting pipe clamp 1...

  • Page 64: Outdoor Unit

    Service Manual 10.2 Outdoor Unit GWH09AECXB-K6DNA1A/O The component is only for rererence;please refer to the actual product Installation and Maintenance...
  • Page 65 Service Manual Description Description Coping Compressor and Fittings 4-Way Valve Assy Chassis Sub-assy Handle (Right) Motor Support Sponge(Condenser) Fan Motor Temperature Sensor Support Axial Flow Fan Condenser Assy Cabinet Front Grill Capillary Sub-assy/ Electric Expansion Valve Sub-Assy Drainage Joint(ODU) Sensor Insert Left Side Plate Right Side Plate Clapboard...
  • Page 66 Service Manual GWH12AECXD-K6DNA1A/O The component is only for rererence;please refer to the actual product Installation and Maintenance...
  • Page 67 Service Manual Description Description Top Cover Assy Grill Chassis Sub-assy Condenser Assy Front Panel Assy 4-Way Valve Front Grill Sensor Insert Axial Flow Fan 4-Way Valve Assy Brushless DC Motor Electric Expansion Valve Fitting Motor Support Electric Expansion Valve Sub-Assy Left Side Plate Wire Clamp Clapboard...

  • Page 68: Removal Procedure

    11. Removal Procedure Service Manual 11.1 Removal Procedure of Indoor Unit Caution: discharge the refrigerant completely before removal. Step Procedure 1. Remove filter Under on status, press clean button on the remote controller to enter into clean mode. Once the air guide louver has been pushed to the maximum position, please cut off the power.
  • Page 69 Service Manual Step Procedure Hook Pull the hook at the left side of air guide louver upwards and then the left side of air guide louver can be removed. Hook of connection rod Cross clasp Hold the air guide louver, press the cross clasp at the right side of air guide louver, hold it to the left side and then remove the air guide louver.
  • Page 70 Service Manual Step Procedure 4. Remove rear case assy (1)Remove the finger guard grille. Press the claps at the top of the guard grille and then pull the finger guard grille upwards to remove it. (2)Loose the screws (2-3 circles) used for fixing the blade, pull the blade to the left side until it can’t be pulled any more.
  • Page 71 Service Manual Step Procedure 6. Remove Decorative borad(Left) and Left side plate Decorative Borad Botton Press the clap at the top of the left decorative board and turn it over. Once the top part is separated, lift it upwards and then remove the decorative board. Left Side Plate Screws Remove 2 screws used for fixing the left side...
  • Page 72 Service Manual Step Procedure 8.Remove Front Case Screws Remove 2 screws used for fixing the front case and 1 screw used for fixing the WIFI, turn over the Clasp front case, pull the front case upwards to loose the upper clasp, and then remove the front case. 9.
  • Page 73 Service Manual Step Procedure Screw of Tube temperature grounding wire Cold plasma sensor 10. Remove Motor Remove 3 screws used for fixing the motor mounting plate and then remove the motor Screws mounting plate. Pull it to the right side forcibly and then the motor can be remove from the installation hole of motor support.
  • Page 74 Service Manual Step Procedure 12. Remove Motor Holder Screws Remove 4 screws used for fixing the motor support, press clasp used for fixing the motor support to pull it to the right side, and then remove the motor support. Clasp 13.Remove Evaporator Assy Screws Remove 2 screws used for fixing the evaporator,...

  • Page 75: Removal Procedure Of Outdoor Unit

    Service Manual 11.2 Removal Procedure of Outdoor Unit Caution: discharge the refrigerant completely before removal. GWH09AECXB-K6DNA1A/O Step Procedure 1. Before disassembly 2. Remove big handle and valve cover big handle Remove the connection screw fixing the big handle and then remove the valve cover.
  • Page 76 Service Manual Step Procedure 4. Remove grille grille Remove connection screws between the front grille and the front panel. Then remove the grille. 5. Remove front panel Remove connection screws connecting the front panel with the chassis and the motor support and then remove the front panel.
  • Page 77 Service Manual Step Procedure 7. Remove axial flow blade axial flow blade Remove the nut on the blade and then remove the axial flow blade. 8. Remove motor and motor support motor support motor Remove the tapping screws fixing the motor and disconnect the leading wire insert of the motor.
  • Page 78 Service Manual Step Procedure 10. Remove isolation sheet Remove the screws fixing the isolation sheet and then remove the isolation sheet. isolation sheet 11. Remove compressor Unsolder the welding joint connecting the capillary, valves and the outlet pipe of condenser to remove the 4-way valve capillary.
  • Page 79 Service Manual Caution: discharge the refrigerant GWH12AECXD-K6DNA1A/O completely before removal. Step Procedure 1. Before disassembly 2. Remove big handle and valve cover big handle Remove the screws fixing big handle, valve cover and then remove them. valve cover 3. Remove top cover top cover Remove the screws fixing top panel and then remove the top panel.
  • Page 80 Service Manual Step Procedure 4. Remove front panel assy Remove connection screws connecting the front panel assy with the chassis and the motor support, and then remove the front panel assy. front panel 5. Remove right side plate assy Rescrew the ground screws, remove the ground wires, loosen the screws fixing terminal board, remove the terminal board, rescrew the screws fixing the right plate, and remove the right side plate assy.
  • Page 81 Service Manual Step Procedure 7. Remove electric box assy Remove the terminals, lift up and rotate the electrical box assy to the right so that the snaps on the clapboard are removed and the electrical box assy are removed. 8. Remove motor Remove the screws fixing the motor and then remove the motor.
  • Page 82 Service Manual Step Procedure 10. Remove gas valve and liquid valve Remove the valve support bolck, remove the screws fixing the gas valve and the liquid valve,unsolder the welding joint connecting the gas valve and the liquid valve, remove them. Note: Discharge the refrigerant completely befor unsoldering;...
  • Page 83 Service Manual Step Procedure 13. Remove isolation sheet electric expand Remove the screws fixing the isolation sheet and then valve fitting remove the isolation sheet. electric expansion valve sub-Assy welding joint 14. Remove clapboard assy clapboard assy Remove the screws fixing the clapboard assy and then remove the clapboard assy.

  • Page 84: Appendix

    Appendix Service Manual Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit display Fahrenheit Celsius Fahrenheit display Fahrenheit Celsius Fahrenheit display Fahrenheit Celsius temperature（℉） temperature（℉） temperature（℉） （℉） （℃） （℉） （℃）...

  • Page 85: Appendix 3: Pipe Expanding Method

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

  • Page 86: Appendix 4: List Of Resistance For Temperature Sensor

    Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 138.10 49.02 18.75 7.97 128.60 44.31 17.14 7.35 115.00 40.09 15.68 6.79 102.90 36.32...
  • Page 87 JF00304873 GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070 Tel: (+86-756) 8522219 Fax: (+86-756) 8669426 E-mail: global@cn.gree.com For product improvement, specifications and appearance in this manual are subject to change without prior notice.

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