Gree GWH09MB-K3DNA2K Service Manual
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Gree GWH09MB-K3DNA2K Service Manual

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Change for Life
Service Manual
Model:
GWH09MB-K3DNA2K
GWH09MB-K3DNA3K
GWH09MB-K3DNA4K
GWH09MB-K3DNA5K
GWH09MB-K3DNB3K
GWH09MB-K3DNC9K
GWH09MB-K3DNE1K
GWH09MB-K3DNC8K
GWH09MB-K3DNE3K
GWH09MB-K3DNC1K
GWH12MB-K3DNA2K
GWH12MB-K3DNA3K
GWH12MB-K3DNA4K
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
GWH12MB-K3DNA5K
GWH12MB-K3DNA8K
GWH12MB-K3DNB3K
GWH12MB-K3DNC9K
GWH12MB-K3DND3K
GWH12MB-K3DNE1K
GWH12MB-K3DNC8K
GWH12MB-K3DNE3K
GWH12MB-K3DNC1K
(Refrigerant R410A)

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Summary of Contents for Gree GWH09MB-K3DNA2K

  • Page 1 Change for Life Service Manual Model: GWH09MB-K3DNA2K GWH12MB-K3DNA5K GWH09MB-K3DNA3K GWH12MB-K3DNA8K GWH09MB-K3DNA4K GWH12MB-K3DNB3K GWH09MB-K3DNA5K GWH12MB-K3DNC9K GWH09MB-K3DNB3K GWH12MB-K3DND3K GWH09MB-K3DNC9K GWH12MB-K3DNE1K GWH09MB-K3DNE1K GWH12MB-K3DNC8K GWH09MB-K3DNC8K GWH12MB-K3DNE3K GWH09MB-K3DNE3K GWH12MB-K3DNC1K GWH09MB-K3DNC1K (Refrigerant R410A) GWH12MB-K3DNA2K GWH12MB-K3DNA3K GWH12MB-K3DNA4K 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 ....................... 4 2.1 Specification Sheet ........................ 4 2.2 Operation Characteristic Curve ................... 14 2.3 Capacity Variation Ratio According to Temperature ............14 2.4 Cooling and Heating Data Sheet in Rated Frequency ............
  • Page 3 Service Manual 9. Maintenance ......................... 43 9.1 Error Code List ........................43 9.2 Troubleshooting for Main Malfunction ................. 50 9.3 Troubleshooting for Normal Malfunction ................65 10. Exploded View and Parts’ List ..............67 10.1 Indoor Unit ......................... 67 10.2 Outdoor Unit ........................86 11.

  • Page 4: Part Ⅰ : Technical Information

    Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: GWH09MB-K3DNA3K/I GWH12MB-K3DNA3K/I GWH09MB-K3DNA2K/I GWH12MB-K3DNA2K/I GWH09MB-K3DNC9K/I GWH12MB-K3DNC9K/I GWH09MB-K3DNE1K/I GWH12MB-K3DNE1K/I GWH12MB-K3DND3K/I GWH09MB-K3DNA4K/I GWH12MB-K3DNA4K/I GWH09MB-K3DNA5K/I GWH12MB-K3DNA5K/I Technical Information...
  • Page 5 Service Manual GWH09MB-K3DNB3K/I GWH12MB-K3DNB3K/I GWH09MB-K3DNC8K/I GWH12MB-K3DNC8K/I GWH09MB-K3DNE3K/I GWH12MB-K3DNE3K/I GWH12MB-K3DNA8K/I GWH09MB-K3DNC1K/I GWH12MB-K3DNC1K/I Outdoor Unit: GWH09MB-K3DNA3K/O(CB171W07600) GWH09MB-K3DNA3K/O(CB171W07602) GWH09MB-K3DNA3K/O(LCLH)(CB171W07605) GWH09MB-K3DNA3K/O(CB171W07604) GWH12MB-K3DNA3K/O(CB171W07700) GWH12MB-K3DNA3K/O(CB171W07702) Technical Information...
  • Page 6 T EMP TIMER OF F T URBO SLEEP LIGH T Model list: ProductCode ProductCode OutdoorUnit ProductCode Model IndoorUnit GWH09MB-K3DNA2K CB181005700 GWH09MB-K3DNA2K/I CB181N05700 GWH09MB-K3DNA3K/O CB171W07600 GWH09MB-K3DNA3K CB171007600 GWH09MB-K3DNA3K/I CB171N07600 GWH09MB-K3DNA3K/O CB171W07600 GWH09MB-K3DNA4K CB161005902 GWH09MB-K3DNA4K/I CB161N05901 GWH09MB-K3DNA3K/O CB171W07602 GWH09MB-K3DNA4K CB161005901 GWH09MB-K3DNA4K/I CB161N05901...

  • Page 7: Specifications

    Service Manual 2. Specifications 2.1 Specification Sheet Model GWH09MB-K3DNA4K GWH09MB-K3DNA5K Product Code CB161005902 CB162006702 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Indoor Cooling Capacity (Min~Max) 2700(600~3200) 2700(600~3200) Heating Capacity (Min~Max) 2800(800~3600) 2800(800~3600) Cooling Power Input (Min~Max) 870(185~1300) 870(185~1300) Heating Power Input (Min~Max)
  • Page 8 Service Manual Model of Outdoor Unit GWH09MB-K3DNA3K/O Product Code of Outdoor Unit CB171W07602 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD. QXA-A091zE190A Compressor Model FVC 68EP Compressor Oil Compressor Type Rotary L.R.A. 16.5 Compressor RLA Compressor Power Input Overload Protector 1NT11L-6233 Throttling Method Electron expansion valve Operation temp...
  • Page 9 Service Manual Model GWH09MB-K3DNA5K(LCLH) GWH09MB-K3DNA5K(LCLH) Product Code CB162006704 CB162006705 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Indoor Cooling Capacity (Min~Max) 2700(600~3200) 2700(600~3200) Heating Capacity (Min~Max) 2800(800~3600) 2800(800~3600) Cooling Power Input (Min~Max) 870(185~1300) 870(185~1300) Heating Power Input (Min~Max) 900(220~1400) 900(220~1400) Cooling Power Current...
  • Page 10 Service Manual Model of Outdoor Unit GWH09MB-K3DNA3K/O(LCLH) GWH09MB-K3DNA3K/O(LCLH) Product Code of Outdoor Unit CB171W07604 CB171W07605 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO., LTD. CO., LTD. QXA-A091zE190A QXA-A091zE190A Compressor Model FVC 68EP FVC 68EP Compressor Oil Compressor Type Rotary Rotary L.R.A.
  • Page 11 Service Manual 1.GWH09MB-K3DNA2K, 2.GWH09MB-K3DNA3K 3.GWH09MB-K3DNB3K, 4.GWH09MB-K3DNC9K Model 5.GWH09MB-K3DNE1K, 6.GWH09MB-K3DNA5K 7.GWH09MB-K3DNA4K, 8.GWH09MB-K3DNC8K 9.GWH09MB-K3DNE3K,10.GWH09MB-K3DNC1K 1.CB181005700, 2.CB171007600 3.CB163005501, 4.CB145003600 Product Code 5.CB143001300, 6.CB162006700 7.CB161005901, 8.CB192000200 CB192000201 9.CB404002001, 10.CB139005202 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity (Min~Max)
  • Page 12 Service Manual Model of Outdoor Unit GWH09MB-K3DNA3K/O Product Code of Outdoor Unit CB171W07600 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD. QXA-A091zE190A Compressor Model FVC 68EP Compressor Oil Compressor Type Rotary L.R.A. 16.5 Compressor RLA Compressor Power Input Overload Protector 1NT11L-6233 Throttling Method Electron expansion valve Operation temp...
  • Page 13 Service Manual 1.GWH12MB-K3DNA2K, 2.GWH12MB-K3DNA3K 3.GWH12MB-K3DNB3K, 4.GWH12MB-K3DNC9K 5.GWH12MB-K3DND3K, 6.GWH12MB-K3DNE1K Model 7.GWH12MB-K3DNA5K, 8.GWH12MB-K3DNA4K 9.GWH12MB-K3DNC8K 10.GWH12MB-K3DNE3K 11.GWH12MB-K3DNA8K, 12.GWH12MB-K3DNC1K 1.CB181005800, 2.CB171007700 3.CB163005601, 4.CB145003700 5.CB405002901, 6.CB143001400 7.CB162006800, 8.CB161006001 Product Code 9.CB192000300 CB192000301 10.CB404002101 11.CB173005400 12.CB139005301 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity (Min~Max) 3500(600~3900)
  • Page 14 Service Manual Model of Outdoor Unit GWH12MB-K3DNA3K/O Product Code of Outdoor Unit CB171W07700 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD. QXA-A091zE190A Compressor Model FVC 68EP Compressor Oil Compressor Type Rotary L.R.A. 16.5 Compressor RLA Compressor Power Input Overload Protector 1NT11L-6233 Throttling Method Electron expansion valve Operation temp...
  • Page 15 Service Manual GWH12MB-K3DNA4K Model GWH12MB-K3DNA5K CB161006002 Product Code CB162006802 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Cooling Capacity (Min~Max) 3500(600~3900) Heating Capacity (Min~Max) 4000(880~4400) Cooling Power Input (Min~Max) 1170(185~1400) Heating Power Input (Min~Max) 1200(250~1550) Cooling Power Current Heating Power Current Rated Input 1600...
  • Page 16 Service Manual Model of Outdoor Unit GWH12MB-K3DNA3K/O Product Code of Outdoor Unit CB171W07702 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD. QXA-A091zE190A Compressor Model FVC 68EP Compressor Oil Compressor Type Rotary L.R.A. 16.5 Compressor RLA Compressor Power Input Overload Protector 1NT11L-6233 Throttling Method Electron expansion valve Operation temp...

  • Page 17: Operation Characteristic Curve

    Service Manual 2.2 Operation Characteristic Curve Cooling Heating Condition Condition Indoor:DB 20 °C Indoor:DB 27 °C WB19 °C Indoor air flow:Turbo Indoor air flow: Turbo Pipe length:5m Pipe length:5m Voltage:230V Voltage:230V Compressor Speed(rps) Compressor Speed(rps) 2.3 Capacity Variation Ratio According to Temperature n i l Condition Condition...

  • Page 18: Cooling And Heating Data Sheet In Rated Frequency

    Service Manual 2.4 Cooling and Heating Data Sheet in Rated Frequency Cooling: Pressure of gas pipe Inlet and outlet pipe Rated cooling temperature of heat Fan speed of Fan speed of connecting indoor and Compressor condition(°C) (DB/WB) Model revolution (rps) outdoor unit exchanger indoor unit...

  • Page 19: Outline Dimension Diagram

    Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit Φ55 Φ55 3.2 Outdoor Unit GWH09MB-K3DNA3K/O(CB171W07600) GWH09MB-K3DNA3K/O(CB171W07605) GWH12MB-K3DNA3K/O(CB171W07700) Unit:mm Technical Information...
  • Page 20 Service Manual GWH09MB-K3DNA3K/O(CB171W07602) GWH09MB-K3DNA3K/O(CB171W07604) GWH12MB-K3DNA3K/O(CB171W07702) Unit:mm Technical Information...

  • Page 21: Refrigerant System Diagram

    Electron Valve Strainer expansion valve Service Manual COOLING 4. Refrigerant System Diagram Cooling and heating model Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Suction Accumlator exchanger Compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer...

  • Page 22: Electrical Part

    Service Manual 5. Electrical Part 5.1 Wiring Diagram ●Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name White Jumper cap Green Yellow Brown COMP Compressor Blue Grounding wire Black YEGN Yellow/Green Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ●...
  • Page 23 Service Manual ● Outdoor Unit GWH09MB-K3DNA3K/O(CB171W07600) OUTROOM EXHAUST TUBE TEM. S ENSOR TEM. S ENSOR TEM. S ENSOR RT1 RT2 RT3 YEGN θ θ θ LX1-1 LX1-2 AC-L2 AC-L3 N(1) AC-N1 COM-OUT AC-N AC-N2 AC-L YEGN OVC-COMP AC-L1 AC-L OFAN U V W MID.ISOLATION SHEET ELECTRIC BOX L2 L2...
  • Page 24 Service Manual GWH09MB-K3DNA3K/O(CB171W07602) GWH09MB-K3DNA3K/O(CB171W07604) GWH09MB-K3DNA3K/O(CB171W07605) HEATER OUTROOM EXHAUST TUBE TEM. S ENSOR (CHASSIS) TEM. S ENSOR TEM. S ENSOR RT1 RT2 RT3 YEGN θ θ θ LX1-1 LX1-2 HEAT-L HEAT-N1 AC-L2 N(1) AC-L3 AC-N1 COM-OUT AC-N AC-N2 AC-L YEGN AC-L1 AC-L OFAN OVC-COMP...

  • Page 25: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram Indoor Unit ● Top view Power of switch Protective tube Live wire of health function Port of neutral wire Port of indoor fan Solid-state relay Jumper Cap Auto button Feedback of indoor fan 10 Port of motor for vertical swing Port of motor for horizontal swing 12 Buzzer...
  • Page 26 Service Manual Outdoor Unit ● Top view inductance pin2 inductance pin1 four-wayvalve compressor electricheater chassis electric heater fan neilsbed 10-core communication cable electric expansion valve overload protection 10 temp. sensor ● Bottom view Technical Information...

  • Page 27: Function And Control

    Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on Remote Controller ON/OFF Button MODE Button +/- Button FAN Button Button CLOCK Button TIMER ON/TIMER-OFF Button X-FAN Button TEMP Button TURBO Button LIGHT Button SLEEP Button Introduction for Icons on Display Screen Operation mode Set fan speed Operation mode...
  • Page 28 Service Manual ● When selecting auto mode, Air conditioner will start auto operation according to indoor ambient temperature.Set temperature can’t be adjusted and will not be displayed as well. Press "FAN" button can adjust fan speed. Press " " button can adjust fan blowing angle. ●...
  • Page 29 Service Manual controller blinks. Press "+" or "-"button to adjust TIMER ON setting. After each pressing "+" or "-"button, TIMER ON setting will increase or decrease 1min. Hold "+" or "-"button, 2s later, the time will change quickly until reaching your required time. Press “ TIMER ON”to confirm it. The word “ON" will stop blinking. " "...
  • Page 30 Service Manual Operation Guide 1. After putting through the power, press “ON/OFF” button on remote controller to turn on the air conditioner. 2. Press "MODE" button to select your required mode:AUTO,COOL,DRY,FAN,HEAT. 3. Press “+” or “-“ button to set your required temperature. (Temperature can’t be adjusted under auto mode).

  • Page 31: Brief Description Of Modes And Functions

    Service Manual 6.2 Brief Description of Modes 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 available, for the first energization, if the compressor is at stop before de-energization, the compressor will be started without a 3-minute lag;...
  • Page 32 Service Manual (3) HEAT Mode ① Working conditions and process of heating If Tamb.≤Tpreset +2°C, the unit enters heating mode, in which case the four-way valve, the compressor and the outdoor fan will operate simultaneously, and the indoor fan will run at preset speed in the condition of preset cold air prevention. If T amb.≥Tpreset +5°C, the compressor will stop, the outdoor fan will stop with a time lag of 30s, and the indoor fan will stop after 60-second blow at low speed If Tpreset +2°C<T amb.<...
  • Page 33 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 will remain unchanged for at least 6 minutes.
  • Page 34 Service Manual 1.2 When the initial set temperature is 24-27°C,the temperature will rise 1°C by every hour after sleep function is set; the temperature will not change after rising 2°C;after running for 7 hours, the temperature will decrease 1°C and it will not change after that. 1.3 When the initial set temperature is 28-29°C,the temperature will rise 1°C by every hour after sleep function is set;...
  • Page 35 Service Manual ① Cooling mode: in auto cooling mode or normal cooling mode, the auto fan speed will run at below mode: a. When Tamb.≥Tpreset+2°C, the indoor fan will run at high speed; b. When Tpreset<Tamb.<Tpreset+2°C, the indoor fan will run at middle speed; c.
  • Page 36 Service Manual F2: Indoor evaporator sensor start and short circuit (continuously measured failure in 30S) F3: Outdoor ambient sensor start and short circuit (continuously measured failure in 30S) F4: Outdoor condenser sensor start and short circuit (continuously measured failure in 30S, and dont measure within 10 minutes after defrosted) F5: Outdoor exhausting sensor start and short circuit (continuously measured failure in 30S after the compressor operated 3 minutes) H3: Overload protection of compressor...

  • Page 37: 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 38 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 39: Installation

    Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the ceiling 15cm Above Space to the wall 15cm Above 15cm Above Space to the wall 300cm Above Above Air outlet side Space to the floor The dimensions of the space necessary for correct installation of the appliance including the minimum permissible distances to adjacent structures Space to the obstruction...
  • Page 40 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 41: 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 42 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 43 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 Panel...

  • Page 44: Installation Of Outdoor Unit

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

  • Page 45: 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 46: Maintenance

    Service Manual 9. Maintenance 9.1 Error Code List Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s)
  • Page 47 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
  • Page 48 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
  • Page 49 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
  • Page 50 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
  • Page 51 Service Manual Display Method of Outdoor Display Method of Indoor Unit Unit Indicator has 3 kinds of Indicator Display (during display status and during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes blinking, ON 0.5s and OFF Name 0.5s) Code...
  • Page 52 Service Manual Display Method of Indoor Unit Display Method of Outdoor Unit Indicator Display (during Indicator has 3 kinds of display blinking, ON 0.5s and OFF status and during blinking, ON Dual-8 Malfunction A/C status Possible Causes 0.5s) 0.5s and OFF 0.5s Code Name Operation...

  • Page 53: Troubleshooting For Main Malfunction

    Service Manual 9.2 Troubleshooting for Main Malfunction 1. Malfunction of Temperature Sensor F1, F2 Troubleshooting for F1,F2 malfunction the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? Insert the temperature sensor tightly Is malfunction eliminated Is there short circuit due to trip - over of the parts? Make the parts upright...
  • Page 54 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Troubleshooting for H6 malfunction Stir the blade with a tool to see whether the blade rotates smoothly Tighten the screw; reassemble the blade, motor and shaft bearing rubber base sub-assy to make sure there is no foreign object between them Is malfunction eliminated...
  • Page 55 Service Manual 3. Malfunction of Protection of Jumper Cap C5 Troubleshooting for C5 malfunction Appearance of Is there jumper cap on the the jumper cap mainboard ? Assemble the jumper cap with the same model Is malfunction eliminated the jumper cap inserted correctly and tightly ? Insert the...
  • Page 56 Service Manual 4. Malfunction of Overcurrent Protection E5 Troubleshooting for E5 malfunction Is the supply voltage unstable Normal fluctuation is within 10 % of the rated Malfunction is with big fluctuation? voltage on the nameplate eliminated Is the supply voltage too low Malfunction is Adjust the supply voltage to maintain it within Malfunction is...
  • Page 57 Service Manual 5. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8 Troubleshooting for U8 malfunction Re-energize1 minute after de-erergization The unit returns to normal. Conclusion:U8 is displayed due U8 is still to instant energization afte de- displayed energization while the capacitor discharges slowly.
  • Page 58 Service Manual 6.Capacity charging malfunction (outdoor unit malfunction) (AP1 below means control board of outdoor unit) Main detection points: ● Detect if the voltage of L and N terminal of XT wiring board is between 210VAC-240VAC by alternating voltage meter; ●...
  • Page 59 Service Manual 7.IPM protection(H5), desynchronizing malfunction(H7), overcurrent of compressor phase current (P5) (AP1 below means control board of outdoor unit) Main detection points: ● Is voltage input within the normal range ● If the control board AP1 is well connected with compressor COMP? If they are loosened? If the connection sequence is correct? ●...
  • Page 60 Service Manual 8.High temperature and overload protection (E8)(AP1 below means control board of outdoor unit) Main detection points: ● If the outdoor ambient temperature is in normal range; ● If the indoor and outdoor fan are running normally; ● If the radiating environment of indoor and outdoor unit is good. E8 is displayed Normal protection, please If the outdoor...
  • Page 61 Service Manual 9.Start-up failure (LC) (AP1 below means control board of outdoor unit) Main detection points: ● If the compressor wiring is correct? ● If the stop time of compressor is sufficient? ● If the compressor is damaged? ● If the refrigerant charging amount is too much? Turn on the unit The stop time is not sufficient and If the stop time of compressor...
  • Page 62 Service Manual 10.Overload and high discharge temperature malfunction Main detection points: ● If the electronic expansion valve is connected well? Is the electronic expansion valve damaged? ● If the refrigerant is leaked? ● The compressor overload protection terminal is not connected well with the mainboard? ●...
  • Page 63 Service Manual H3 or E4 is displayed 30min after power off the unit If the overload protector SAT is well connected? Under ambient temperature, test the resistance of overload protector with ohmmeter; resistance value should be＜1000ohm Connect wire If the wiring terminal FA of electronic according to wiring expansion valve is well connected? diagram...
  • Page 64 Service Manual 11.PFC (correction for power factor) malfunction (outdoor unit malfunction) Main detection points: ● Check if power plug is connected well with the socket ● Check if the reactor of outdoor unit is damaged? Malfunction diagnosis process: start If power plug is connected Is the malfunction Connect the plug correctly well with the socket...
  • Page 65 Service Manual 12.Communication malfunction (E6) Main detection points: ● Check if the connection wire and the built-in wiring of indoor and outdoor unit are connected well and without damage; ● If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged? Malfunction diagnosis process: If the unit operates normally before malfunction...
  • Page 66 Service Manual 13.Flow chart for outdoor communitcation circuit detecting: (1) Test the voltage between N point of wiring board and communication cable with universal meter. The voltage shall be variable. Otherwise, it might be malfunction of mainboard of indoor unit, or malfunction of mainboard of outdoor unit, or wrong wire connection of indoor and outdoor unit.
  • Page 67 Service Manual Start Measure voltage at the Test 10 position as shown in the diagram with a voltmeter Value jumping Measure voltage at the Test 15 position as shown in the diagram with a voltmeter Value jumping Fault with outdoor unit Measure voltage at the Test 11 position as shown in the diagram...

  • Page 68: Troubleshooting For Normal Malfunction

    Service Manual 9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner Can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether it's due to power failure. If yes, No power supply, or poor After energization, operation indicator isn’t bright wait for power recovery.
  • Page 69 Service Manual 4. ODU Fan Motor Can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Connect wires according to wiring diagram to Check the wiring status according to circuit Wrong wire connection, or poor make sure all wiring terminals are connected connection diagram firmly...

  • Page 70: Exploded View And Parts' List

    Service Manual 10. Exploded View and Parts’ List 10.1 Indoor Unit GWH09MB-K3DNA2K/I, GWH12MB-K3DNA2K/I, GWH09MB-K3DNA3K/I, GWH12MB-K3DNA3K/I, GWH09MB-K3DNB3K/I GWH09MB-K3DNA4K/I, GWH12MB-K3DNA4K/I, GWH09MB-K3DNA5K/I, GWH12MB-K3DNA5K/I, GWH12MB-K3DNB3K/I GWH09MB-K3DNE3K/I, GWH12MB-K3DNE3K/I Installation and Maintenance...
  • Page 71 Service Manual Part Code Description GWH09MB-K3DNA3K/I GWH12MB-K3DNA3K/I Product Code CB171N07600 CB171N07700 Front Panel 20012548 20012548 Display Board 30565007 30565007 Filter Sub-Assy 1112220403 1112220403 Electric Box Cover2 20122075 20122075 Screw Cover 24252016 24252016 Front Case Sub-Assy 20012139 20012139 Axile Bush 10542036 10542036 Guide Louver 10512157...
  • Page 72 Service Manual Part Code Description GWH09MB-K3DNA2K/I GWH12MB-K3DNA2K/I Product Code CB181N05700 CB181N05800 Front Panel 20022148 20022148 Display Board 30565054 30565054 Filter Sub-Assy 1112220403 1112220403 Electric Box Cover2 20122075 20122075 Screw Cover 24252016 24252016 Front Case Sub-Assy 20012139 20012139 Axile Bush 10542036...
  • Page 73 Service Manual Part Code Description GWH09MB-K3DNA4K/I GWH12MB-K3DNA4K/I Product Code CB161N05901 CB161N06001 Front Panel 20012557 20012557 Display Board 30565012 30565012 Filter Sub-Assy 1112220403 1112220403 Electric Box Cover2 20122075 20122075 Screw Cover 24252016 24252016 Front Case Sub-Assy 20012139 20012139 Axile Bush 10542036 10542036 Guide Louver 10512157...
  • Page 74 Service Manual Part Code Description GWH09MB-K3DNA5K/I GWH12MB-K3DNA5K/I Product Code CB162N06700 CB162N06800 Front Panel 20012491 20012491 Display Board 30565073 30565073 Filter Sub-Assy 1112220403 1112220403 Electric Box Cover2 20122075 20122075 Screw Cover 24252016 24252016 Front Case Sub-Assy 20012139 20012139 Axile Bush 10542036 10542036 Guide Louver 10512157...
  • Page 75 Service Manual Part Code Description GWH09MB-K3DNB3K/I GWH12MB-K3DNB3K/I Product Code CB163N05501 CB163N05601 Front Panel 2002210401 2002210401 Display Board 30565037 30565037 Filter Sub-Assy 1112220403 1112220403 Electric Box Cover2 20122075 20122075 Screw Cover 24252016 24252016 Front Case Sub-Assy 20012139 20012139 Axile Bush 10542036 10542036 Guide Louver 10512157...
  • Page 76 Service Manual Part Code Description GWH09MB-K3DNE3K/I GWH12MB-K3DNE3K/I Product Code CB404N02001 CB404N02101 Front Panel 20022419 20022419 Display Board 30565144 30565144 Filter Sub-Assy 1112220403 1112220403 Electric Box Cover2 20122075 20122075 Screw Cover 24252016 24252016 Front Case Sub-Assy 20022420 20022420 Axile Bush 10542036 10542036 Guide Louver 10512157...
  • Page 77 Service Manual GWH09MB-K3DNC9K/I, GWH12MB-K3DNC9K/I Installation and Maintenance...
  • Page 78 Service Manual Part Code Description GWH09MB-K3DNC9K/I GWH12MB-K3DNC9K/I Product Code CB145N03600 CB145N03700 Front Panel Sub-Assy 20012743 20012743 Filter Sub-Assy 1112220403 1112220403 Front Case Sub-assy 20012139 20012139 Guide Louver 10512157 10512157 Axile Bush 10542036 10542036 Air Louver 2 10512155 10512155 Helicoid Tongue 26112163 26112163 Left Axile Bush...
  • Page 79 Service Manual GWH09MB-K3DNE1K/I, GWH12MB-K3DNE1K/I Installation and Maintenance...
  • Page 80 Service Manual Part Code Description GWH09MB-K3DNE1K/I GWH12MB-K3DNE1K/I Product Code CB143N01300 CB143N01400 Front Panel Assy 20012802 20012802 Filter Sub-Assy 1112220403 1112220403 Front Case Sub-assy 2001213919 2001213919 Guide Louver 10512157 10512157 Axile Bush 10542036 10542036 Air Louver 2 10512155 10512155 Helicoid Tongue 26112163 26112163 Left Axile Bush...
  • Page 81 Service Manual GWH12MB-K3DND3K/I Installation and Maintenance...
  • Page 82 Service Manual Part Code Description GWH12MB-K3DND3K/I Product Code CB405N02901 Front Panel Assy 20012966 Filter Sub-Assy 1112220403 Front Case Sub-assy 2001213901 Guide Louver 10512157 Axile Bush 10542036 Air Louver 2 10512155 Helicoid Tongue 26112163 Left Axile Bush 10512037 Rear Case assy 2220210302 Ring of Bearing 26152022...
  • Page 83 Service Manual GWH09MB-K3DNC8K/I GWH12MB-K3DNC8K/I Installation and Maintenance...
  • Page 84 Service Manual Part Code Description GWH09MB-K3DNC8K/I Product Code CB192N00200 CB192N00201 Front Panel Assy 20012916 2001291601 Filter Sub-Assy 1112220403 1112220403 Front Case Sub-assy 2001213909 2001213909 Guide Louver 1051215702P 1051215702P Axile Bush 10542036 10542036 Air Louver 2 1051215501 1051215501 Helicoid Tongue 2611216301 2611216301 Left Axile Bush 10512037...
  • Page 85 Service Manual Part Code Description GWH12MB-K3DNC8K/I Product Code CB192N00300 CB192N00301 Front Panel Assy 20012916 2001291601 Filter Sub-Assy 1112220403 1112220403 Front Case Sub-assy 2001213909 2001213909 Guide Louver 1051215702P 1051215702P Axile Bush 10542036 10542036 Air Louver 2 1051215501 1051215501 Helicoid Tongue 2611216301 2611216301 Left Axile Bush 10512037...
  • Page 86 Service Manual GWH09MB-K3DNC1K/I, GWH12MB-K3DNA8K/I, GWH12MB-K3DNC1K/I Installation and Maintenance...
  • Page 87 Service Manual Part Code Description GWH09MB-K3DNC1K/I Product Code CB139N05202 Front Panel Assy 20012464 Filter Sub-Assy 1112220403 Electric Box Cover2 20122075 Screw Cover 24252016 Front Case Sub-assy 2001213901 Axile Bush 10542036 Guide Louver 10512157 Air Louver 1 10512156 Air Louver 2 10512155 Helicoid Tongue 26112163...
  • Page 88 Service Manual Part Code Description GWH12MB-K3DNA8K/I GWH12MB-K3DNC1K/I Product Code CB173N05400 CB139N05301 Front Panel Assy 2001222101 20012464 Filter Sub-Assy 1112220403 1112220403 Electric Box Cover2 20122075 20122075 Screw Cover 24252016 24252016 Front Case Sub-assy 2001213901 2001213901 Axile Bush 10542036 10542036 Guide Louver 10512157 10512157 Air Louver 1...

  • Page 89: Outdoor Unit

    Service Manual 10.2 Outdoor Unit GWH09MB-K3DNA3K/O(CB171W07600) GWH09MB-K3DNA3K/O(CB171W07605) Installation and Maintenance...
  • Page 90 Service Manual Part Code Description GWH09MB-K3DNA3K/O GWH09MB-K3DNA3K/O Product Code CB171W07600 CB171W07605 Front Grill 22413027 22413049 Cabinet Sub-assy 01433062 0153304811 Axial Flow Fan 10333004 10333004 Chassis Sub-assy 02803037P 0280330401P Clapboard Sub-Assy 01233385 0123338502 Drainage Connecter 06123401 06123401 Compressor and Fittings 00103896G 00103896G 4-Way Valve Assy 03073151...
  • Page 91 Service Manual GWH12MB-K3DNA3K/O(CB171W07700) Installation and Maintenance...
  • Page 92 Service Manual Part Code Description GWH12MB-K3DNA3K/O Product Code CB171W07700 Front Grill 22413027 Cabinet Sub-assy 01433062 Axial Flow Fan 10333004 Chassis Sub-assy 02803151P Clapboard Sub-Assy 01233385 Drainage Connecter 06123401 Compressor and Fittings 00103896G 4-Way Valve Assy 03073151 Valve Support 0171314201P Cut off Valve Assy 07133804 Valve 07100003...
  • Page 93 Service Manual GWH09MB-K3DNA3K/O(CB171W07602) Installation and Maintenance...
  • Page 94 Service Manual Part Code Description GWH09MB-K3DNA3K/O Product Code CB171W07602 CB171W07604 Front Grill 22413027 22413043 Cabinet Sub-assy 01433062 0153304810 Axial Flow Fan 10333004 10333004 Electrical Heater (Chassis) 76510004 76510004 Chassis Sub-assy 02803037P 0280330401P Clapboard Sub-Assy 01233385 0123338502 Drainage Connecter 06123401 06123401 Compressor and Fittings 00103896G 00103896G...
  • Page 95 Service Manual GWH12MB-K3DNA3K/O(CB171W07702) Installation and Maintenance...
  • Page 96 Service Manual Part Code Description GWH12MB-K3DNA3K/O Product Code CB171W07702 Front Grill 22413027 Cabinet Sub-assy 01433062 Axial Flow Fan 10333004 Chassis Sub-assy 02803151P Electrical Heater 76510004 Clapboard Sub-Assy 01233385 Drainage Connecter 06123401 Compressor and Fittings 00103896G 4-Way Valve Assy 03073151 Valve Support 0171314201P Cut off Valve Assy 07133804...

  • Page 97: Removal Procedure

    Service Manual 11. Removal Procedure Caution: discharge the refrigerant completely before removal. 11.1 Removal Procedure of Indoor Unit Steps Procedure 1. Remove filter Open the panel. Panel Loosen the clasp shown in the fig and then pull the left filter and right filer outwards to remove them.
  • Page 98 Service Manual Procedure Steps 3. Remove panel Panel Open the front panel; separate the panel rotation shaft from the groove fixing the Front panel front panel and then removes the front panel. Note: The display of some models is fixed on Panel rotation the panel;...
  • Page 99 Service Manual Steps Procedure 6. Remove vertical louver Loosen the connection clasps between vertical louver and bottom case to remove vertical louver. bottom case vertical louver clasps 7. Remove electric box assy Loosen the connection clasps between shield cover of electric box sub-assy and electric box, and then remove the shield cover of electric box sub-assy.
  • Page 100 Service Manual Steps Procedure Remove two screws fixing display. Note: The display of some models is fixed on the panel; unscrew the screws fixing the display on the panel before removing the Display Screws panel. Screws Remove the screw fixing electric box assy and then remove the electric box assy.
  • Page 101 Service Manual Steps Procedure step motor 9. Remove stepping motor screws Remove the screw fixing step motor and then remove the step motor. 10. Remove motor and cross flow blade Remove the screws fixing motor clamp and then remove the motor clamp. motor clamp cross flow Remove the screws at the connection...

  • Page 102: 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. Steps Procedure 1.Remove big handle Before disassamble． Remove 1 connection screw fixing big handleand then removethe big handle.
  • Page 103 Service Manual 3.Remove grille and front panel Remove connection screws between the front grille and the front panel. Then remove the front grille. Remove connection screws connecting the front panel with the chassis and the motor support, and then remove the front panel. Grille Panel 4.Remove axial flow blade...
  • Page 104 Service Manual 6.Remove electric box assy Electric box assy Remove the 2 screws fixing the cover of elec- tric box. Lift to remove the cover. Loosen the wire and disconnect the terminal. Lift to re- move the electric box assy. 7.Remove 4-way valve assy Unscrew the fastening nut of the 4-way Valve 4-way Valve Assy...
  • Page 105 Service Manual 9.Remove motor and motor support Motor support Remove the 4 tapping screws fixing the motor. Pull out the lead-out wire and remove the Motor motor. Remove the 2 tapping screws fixing the motor support. Lift motor support to re- move it.
  • Page 106 Service Manual 11.Remove Compressor Remove the 2 screws fixing the gas valve. Unsolder the welding spot connecting gas valve and air return pipe and remove the gas valve. (Note: it is necessary to warp the gas valve when unsoldering the welding spot.) Remove the 2 Liquid valve screws fixing liquid valve.

  • Page 107: 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 Fahrenheit Fahrenheit Fahrenheit display display display Celsius （℃） Celsius （℃） Celsius （℃） temperature temperature temperature （℉）...

  • Page 108: 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 109: Appendix 4: List Of Resistance For Temperature Sensor

    Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table for Indoor and Outdoor Ambient Temperature Sensor(15K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6...
  • Page 110 Service Manual Resistance Table for Indoor and Outdoor Tube Temperature Sensor(20K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 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...
  • Page 111 Service Manual Resistance Table of Outdoor Discharge Temperature Sensor(50K) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( ) Resistance(k ) Temp( Resistance(k ) 853.5 18.34 4.754 799.8 93.42 17.65 4.609 89.07 16.99 4.469 703.8 84.95 16.36 4.334 660.8 81.05 15.75 4.204 620.8...
  • Page 112 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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