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Summary of Contents for Gree GWH12QB-K6DNB8I
- Page 1 Change for life Service Manual Models: GWH12QB-K6DNB8I GWH12QB-K6DNB2I GWH12QB-K6DNB4I GWH12QB-K6DNA1I GWH12QB-K6DND6I GWH12QB-K6DNA5I GWH12QB-K6DND6I GWH12QB-K6DNA3I GWH12QB-K6DNC6I GWH12QB-K6DNC4I GWH12QB-K6DNC8I (Refrigerant:R32) GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI...
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Page 2: Table Of Contents
6.1 Remote Controller Introduction of YAN1F6(WiFi) ............17 6.2 Remote Controller Introduction of YAP1FB2(WiFi) ............22 6.3 Brief Description of Modes and Functions ..............27 6.4 GREE+ App Operation Manual ..................32 6.5 Ewpe Smart App Operation Manual ................33 Part Ⅱ : Installation and Maintenance ..........34... -
Page 3: Table Of Contents
Service Manual 9. Maintenance ......................45 9.1 Malfunction Analysis .......................45 9.2 Flashing LED of Indoor Unit/Outdoor and Primary Judgement ........49 9.3 How to Check Simply the Main Part ................58 10. Exploded View and Parts List ..............72 10.1 Indoor Unit ........................72 10.2 Outdoor Unit .........................78 11. -
Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: GWH12QB-K6DNB8I/I GWH12QB-K6DNB2I GWH12QB-K6DNB4I/I GWH12QB-K6DNA1I/I GWH12QB-K6DNA5I/I GWH12QB-K6DND6I/I GWH12QB-K6DNA3I/I GWH12QB-K6DND6I/I GWH12QB-K6DNC6I/I GWH12QB-K6DNC4I/I GWH12QB-K6DNC8I/I Technical Information... - Page 5 Service Manual Outdoor Unit: GWH12QB-K6DNB8I/O Remote Controller: YAN1F6(WiFi) YAP1FB2(WiFi) WiFi Model List: Model Product code Remote Controller GWH12QB-K6DNB8I CB438006800/CB438006801 GWH12QB-K6DNB2I CB432012300 GWH12QB-K6DNB4I CB434010600/CB434010601 GWH12QB-K6DNA1I CB419015000 GWH12QB-K6DND6I CB460005100 YAN1F6(WiFi) GWH12QB-K6DNA5I CB425011800 GWH12QB-K6DND6I CB460005101 GWH12QB-K6DNA3I CB424006500 GWH12QB-K6DNC8I CB456006200 GWH12QB-K6DNC6I CB443005400 GWH12QB-K6DNC4I CB444007501...
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Page 6: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet 1.GWH12QB-K6DNB8I 2.GWH12QB-K6DNB2I 3.GWH12QB-K6DNB4I 4.GWH12QB-K6DNA1I 5.GWH12QB-K6DND6I 6.GWH12QB-K6DNA5I Model 7.GWH12QB-K6DND6I 8.GWH12QB-K6DNA3I 9. GWH12QB-K6DNC6I 10.GWH12QB-K6DNC4I 11.GWH12QB-K6DNC8I 12.GWH12QB-K6DNB8I 1.CB438006800/CB438006801 2.CB432012300 3.CB434010600/CB434010601 4.CB419015000 Product Code 5.CB460005100 6.CB425011800 7.CB460005101 8.CB424006500 9CB443005400 10.CB444007501 11.CB456006200 12.CB438006802 Rated Voltage 220-240 Power Rated Frequency... - Page 7 Service Manual Model of Outdoor Unit GWH12QB-K6DNB8I/O Product Code of Outdoor Unit CB438W06800 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPReSSOR CO., LTD Compressor Model QXF-B096zE190A Compressor Oil FW68DA Compressor Type Rotary L.R.A. 20.0 Compressor RLA 4.21 Compressor Power Input Overload Protector 1NT11L-6233...
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Page 8: Operation Characteristic Curve
Service Manual 2.2 Operation Characteristic Curve Cooling Heating 220V Conditions 220V Indoor:DB27°C/WB19°C Outdoor:DB35°C/WB24°C Indoor air flow:Super High 230V Pipe length:5m 230V 240V Conditions Indoor:DB20°C/WB15°C 240V Outdoor:DB7°C/WB6°C Indoor air flow:Super High Pipe length:5m 10 20 30 40 50 60 70 80 90 100 Compressor speed (rps) Compressor speed (rps) 2.3 Capacity Variation Ratio According to Temperature... -
Page 9: 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 Fan speed Fan speed Compressor connecting indoor temperature of heat condition( C) (DB/WB) Model of indoor of outdoor frequency and outdoor unit exchanger... -
Page 10: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 168.5 159.5 Φ55 Φ55 Unit:mm Unit:mm Models Φ55 Φ55 Technical Information... -
Page 11: Outdoor Unit
Service Manual 3.2 Outdoor Unit Unit:mm Technical Information... -
Page 12: Refrigerant System Diagram
Service Manual 4. Refrigerant System Diagram Cooling and heating model Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Accumlator Suction exchanger Compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Capillary Strainer COOLING HEATING Connection pipe specification: Liquid pipe:1/4"... -
Page 13: Electrical Part
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 GWH12QB-K6DNB8I/I(CB438N06800) GWH12QB-K6DNB2I/I GWH12QB-K6DNB4I/I GWH12QB-K6DNA1I/I GWH12QB-K6DNA5I/I GWH12QB-K6DND6I/I GWH12QB-K6DNA3I/I GWH12QB-K6DNC6I/I GWH12QB-K6DNC8I/I 6363222005 Technical Information... - Page 14 Service Manual GWH12QB-K6DND6I/I GWH12QB-K6DNB8I/I(CB438N06801) GWH12QB-K6DNB4I/I 6363222004 GWH12QB-K6DNC4I/I(CB444N07501) 60000700068806 Technical Information...
- Page 15 Service Manual GWH12QB-K6DNB8I/I(CB438N06802) 60000700068803 Technical Information...
- Page 16 Service Manual ● Outdoor Unit 60000700076302 These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...
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Page 17: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram All models except GWH12QB-K6DNC4I/I GWH12QB-K6DNB8I/I Indoor Unit Top view Name Communication wire Live wire Fuse Neutral wire PG fan interface Auto button up&down swing interface Interface of PG feedback Needle stand for WiFi Interface of temperature sensor... -
Page 18: Indoor Unit
Service Manual Indoor Unit GWH12QB-K6DNC4I/I GWH12QB-K6DNB8I/I ● Top view Name Interface of communication wire for indoor unit and outdoor unit 2 Interface of live wire Interface of health function neutral wire (Only for the mode with this function) 4 Interface of neutral wire... - Page 19 Service Manual Outdoor Unit ● Top view Name Interface of compressor wire Interface of reactor Fan terminal Interface of 4-way valve Terminal of electronic expansion valve Grounding wire Live wire Neutral wire Communication wire 10 Overload interface of compressor 11 Interface of temperature sensor ●...
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Page 20: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction of YAN1F6(WiFi) Buttons on Remote Controller ON/OFF button MODE button WiFi FAN button SWING button TURBO button ▲/ button SLEEP button TEMP button WiFi button LIGHT button CLOCK button TIMER ON / TIMER OFF button Introduction for icons on display screen Set fan speed... - Page 21 Service Manual 1. ON/OFF button Press this button to turn on the unit. Press this button again to turn off the unit. 2. MODE button Press this button to select your required operation mode. AUTO COOL HeAT ● When selecting auto mode, air conditioner will operate automatically according to ex-factory setting. Set temperature cant be adjusted and will not be displayed as well.
- Page 22 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 23 Service Manual Health function Health function will be set during operation of indoor fan. Turn off the unit will also turn off health function. This function is only available for some models. Function introduction for combination buttons 1. Energy-saving function Under cooling mode, press "TEMP"...
- Page 24 Service Manual Replacement of batteries in remote controller 1. Press the back side of remote controller marked with " ", as shown in the fig, and then push signal sender battery out the cover of battery box along the arrow direction. 2.
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Page 25: Remote Controller Introduction Of Yap1Fb2(Wifi)
Service Manual 6.2 Remote Controller Introduction of YAP1FB2(WiFi) ON/OFF button MODE button FAN button TURBO button ▲/ button button button T-ON / T-OFF button I FEEL button CLOCK button SLEEP button WiFi button button LIGHT button TEMP button WiFi Icon Display on Remote Controller Set fan speed fan speed. - Page 26 Service Manual 2.MODE button Press this button to select your required operation mode. AUTO COOL HEAT When selecting auto mode, air conditioner will operate automatically accordin to the sensed temperature. Set temperature can’t be adjusted and will not be displayed as well. Press "FAN" button can adjust fan speed. Press " "...
- Page 27 Service Manual no display Note: (stops at current position) Press this button continuously more than 2s, the main unit will swing back an forth from left to right, and then loosen present position of guide louver will be kept immediately. the button, the unit will stop swinging and press this button again 2s later, status...
- Page 28 Service Manual 10.CLOCK button Press this button to set clock time. " " icon on remote controller will blink. Press "▲" or " " button within 5s to set clock tim e. Each pressing of "▲" or " " button, clock time will increase or decrease 1 minute. If hold "▲" or " "...
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Page 29: Child Lock Function
Service Manual temperature automatically according to ex-factory setting to reach to the best energy-saving effect. Press "TEMP" and energy-saving effect. Press "TEMP" and "CLOCK" buttons simultaneously again to exit energy-saving function. Note: Under energy-saving function, fan speed is defaulted at auto speed and it can’ be adjusted. Under energy-saving function, set temperature can’t be adjusted. -
Page 30: Brief Description Of Modes And Functions
Service Manual 6.3 Brief Description of Modes and Functions 1. Temperature Parameters Indoor preset temperature (Tpreset) ◆ Indoor ambient temperature (Tamb.) ◆ 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 31 Service Manual 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...
- Page 32 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.
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Page 33: Indoor Units
Service Manual Indoor Units (1) ON/OFF Press the remote button ON/OFF: the on-off state will be changed once each time you press the button. (2) Mode Selection Press the remote button MODE, then select and show in the following ways: AUTO, COOL, DRY, FAN, HEAT, AUTO. (3) Temperature Setting Option Button Each time you press the remote button TEMP+ or TEMP-, the setting temperature will be up or down by 1 C. - Page 34 Service Manual Cooling, heating and dehumidify). If you close the light key, all the display patterns will close. ② Double-8 display According to the different setting of remote control, the nixie light may display the current temperature (the temperature scope is from 16 C to 30 C) and indoor ambient temperature.
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Page 35: Gree+ App Operation Manual
GREE+ App Download Linkage Scan the QR code or search "GREE+" in the application market to download and install it. When "GREE+" App is installed, register the account and add the device to achieve long-distance control and LAN control of Gree smart home appliances. -
Page 36: Ewpe Smart App Operation Manual
Service Manual 6.5 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 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 Safety Precautions for Installing and Relocating the Unit: To ensure safety, please be mindful of the following precautions. Warnings 1. When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the specified refrigerant.
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Page 39: Installation Notes
Service Manual Safety Operation of Flammable Refrigerant Qualification requirement for installation and maintenance man ●All the work men who are engaging in the refrigeration system should bear the valid certification awarded by the authoritative organization and the qualification for dealing with the refrigeration system recognized by this industry. If it needs other technician to maintain and repair the appliance, they should be supervised by the person who bears the qualification for using the flammable refrigerant. - Page 40 Service Manual Main Tools for Installation and Maintenance 1. Level meter, measuring tape 2. Screw driver 3. Impact drill, drill head, electric drill 4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner hexagon spanner 7. Electronic leakage detector 8.
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Page 41: Installation
Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall At least 15cm At least 15cm Space to the wall Drainage pipe Installation and Maintenance... -
Page 42: 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 43: Installation Parts-Checking
Service Manual 8.2 Installation Parts-checking 8.4 Requirements for electric connection 1. Safety Precaution Name Name (1) Must follow the electric safety regulations when installing Indoor unit Sealing gum the unit. Outdoor unit Wrapping tape (2) According to the local safety regulations, use qualified power supply circuit and air switch. - Page 44 Service Manual (3) Fix the wall-mounting frame on the wall with tapping screws 5. Connect the Pipe of Indoor Unit (ST4.2X25TA) and then check if the frame is firmly installed by (1) Aim the pipe joint at the corresponding bellmouth.(As show pulling the frame.
- Page 45 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...
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Page 46: Installation Of Outdoor Unit
Service Manual 8.6 Installation of Outdoor Unit Refer to the following table for wrench moment of force: Tightening torque(N . m) Hex nut diameter(mm) 1. Fix the Support of Outdoor Unit(Select it According to Φ6 15~20 the Actual Installation Situation) Φ9.52 30~40 (1) Select installation location according to the house structure. -
Page 47: 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 48: Maintenance
Service Manual 9. Maintenance 9.1 Malfunction Analysis Note: When replacing the controller, be sure to insert the wire jumper into the new controller, otherwise the unit will display C5 Measure insulation resistance The breaker trips at once when it to ground to see if there is any is set to “ON”. - Page 49 Service Manual Improper set of temperature Adjust set temperature If cooling (heating) load is Check the forecasted load of cooling (heating) proper Check and fill the leakage, then The refrigerant has leakage or is vacuumize it and supplement the re- insufficient frigerant as required Leakage between the high pres-...
- Page 50 Service Manual Improper set of temperature Adjust set temperature If cooling (heating) load is Check the forecasted load of cooling (heating) proper Check and fill the leakage, then The refrigerant has leakage or is vacuumize it and supplement the re- insufficient frigerant as required Leakage between the high pres-...
- Page 51 Service Manual The torque of the swing motor is not enough First, check whether the connection is Wrong connection The swing fan wrong. If no, replace the parts does not run. The controller is damaged(IC2003 is damaged, the swing relay can not close, etc) C o n t r o l l e r m a l f u n c t i o n ( I C 2 0 0 3 Change controller...
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Page 52: Flashing Led Of Indoor Unit/Outdoor And Primary Judgement
Service Manual 9.2 Flashing LED of Indoor Unit/Outdoor and Primary Judgement Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator During cooling and drying Possible reasons: High... - Page 53 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator When the outdoor unit receive OFF 3S OFF 3S signal of Gathering refrigerant Gathering and blink...
- Page 54 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator Decrease Overload or temperature is too All loads operate normally, frequency high;...
- Page 55 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator (during (during Compressor blinking, blinking, intermediate Showing during middle cooling or 0.25s 0.25s frequence in...
- Page 56 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator During cooling and drying operation, compressor will stop OFF 3S Refer to the malfunction analysis System is while indoor fan will operate;...
- Page 57 Service Manual Display Method of Indoor Unit Indicator Display (during Malfunction blinking, ON 0.5s and OFF Dual-8 A/C status Possible Causes Name 0.5s) Code Display Operation Cool Heating Indicator Indicator Indicator Malfunction of During cooling and drying phase current OFF 3S operation, compressor will stop detection and blink...
- Page 58 Service Manual Display Method of Indoor Unit Indicator Display (during blinking, ON 0.5s and OFF Dual-8 Malfunction A/C status Possible Causes 0.5s) Code Name Operation Cool Heating Display Indicator Indicator Indicator Normal communica- tion OFF 3S Defrosting will occur in and blink heating once...
- Page 59 Service Manual Installation and Maintenance...
- Page 60 Service Manual Analysis or processing of some of the malfunction display: 1. Compressor discharge protection Possible causes: shortage of refrigerant; blockage of air filter; poor ventilation or air flow short pass for condenser; the system has noncondensing gas (such as air, water etc.); blockage of capillary assy (including filter); leakage inside four-way valve causes incorrect operation;...
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Page 61: How To Check Simply The Main Part
Service Manual 9.3 How to Check Simply the Main Part 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 62 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 (2) Malfunction of Blocked Protection of IDU Fan Motor H6 Main.detection.points: Main detection points: SmoothlyIs.the.control.terminal.of.PG.motor.connected.tightly? ● Is the control terminal of PG motor connected tightly? SmoothlyIs.the.feedback.interface.of.PG.motor.connected.tightly? ● Is the feedback interface of PG motor connected tightly? The.fan.motor.can't.operate.
- Page 63 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? ● Detectioncircuit of the mainboard isdefined abnormal? Malfunction diagnosis process: Troubleshooting for C5 malfunction...
- Page 64 Service Manual (4) Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8 Main detection points: Instant energization afte de-energization while the capacitordischarges slowly? Malfunction diagnosis process: Troubleshooting for U8 malfunction Turn power off for 1minute,the turn back on The unit returns to normal.
- Page 65 Service Manual 5. Malfunction of detecting plate(WIFI ) JF Start check if the connection wire are correctly connected detecting Replace the plate with the same model Is malfunction eliminated Replace the mainboard with the same model The end Installation and Maintenance...
- Page 66 Service Manual Outdoor Unit (1) Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel) Main Check Points: ●Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210VAC~240VAC. ●Is the reactor (L) correctly connected? Is the connection loose or fallen? Is the reactor (L) damaged? Fault diagnosis process: Troubleshooting for...
- Page 67 Service Manual (2) IPM protection, phase current overcurrent (the control board as below indicates the control board 2. IPM protection, phase current overcurrent (the control board as below indicates the control board of outdoor unit) H5/P5 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...
- Page 68 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 69 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 70 Service Manual (5) Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: ●Is the system pressure too high? ●Is the input voltage too low? Fault diagnosis process: Out of step occurs in Out of step occurs once the operation unit is powered on.
- Page 71 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 72 Service Manual (7) Power factor correct or (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: ●Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken Fault diagnosis process: Start Check wiring of the...
- Page 73 Service Manual (8) Communication malfunction: (following AP1 for outdoor unit control board) Mainly detect: ●Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? ●Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, if is there any damage? Fault diagnosis process: Start...
- Page 74 Service Manual (9) Malfunction of Overcurrent Protection E5 5. Malfunction of Overcurrent Protection Main detection points: Main detection points: ● Is the supply voltage unstable with big fluctuation? Is the supply voltage too low with overload? ● Is the supply voltage too low with overload? Hardware trouble? ●...
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Page 75: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance... - Page 76 Service Manual Part Code Description GWH12QB-K6DNB8I/I GWH12QB-K6DNB2I/I GWH12QB-K6DNB4I/I Product Code CB438N06800 CB432N12300 CB434N10600 Front Panel 20000300073T 20000300019S 20000300026T Filter Sub-Assy 11122219 11122219 11122219 Display Board 30565260 30565260 30565260 Front Case Assy 00000200040 00000200040 00000200040 Guide Louver 1051276301 1051276301 1051276301 Helicoid Tongue...
- Page 77 Service Manual Part Code Description GWH12QB-K6DNA1I/I GWH12QB-K6DND6I/I GWH12QB-K6DNA3I/I Product Code CB419N15000 CB460N05100 CB424N06500 Front Panel 20022479S 200003000028S 2002269701S Filter Sub-Assy 11122219 11122219 1112221905 Display Board 30565263 300001000041 300001060081 Front Case Assy 00000200128 00000200040 2002278101 Guide Louver 10512722 1051276301 1051272201 Helicoid Tongue 26112508 26112508 2611250801...
- Page 78 Service Manual Part Code Description GWH12QB-K6DNA5I/I GWH12QB-K6DND6I/I GWH12QB-K6DNB8I/I Product Code CB425N11800 CB460N05101 CB438N06801 Front Panel 2002267001 200003000028S 20000300073T Filter Sub-Assy 1112221905 1112221905 11122219 Display Board 30565260 300001000041 30565260 Front Case Assy 2002249501 00000200040 00000200040 Guide Louver 1051272202 1051276301 1051276301 Helicoid Tongue...
- Page 79 Service Manual Part Code Description GWH12QB-K6DNC6I/I GWH12QB-K6DNB4I/I GWH12QB-K6DNC8I/I Product Code CB443N05400 CB434N10601 CB456N06200 Front Panel 20000300101T 20000300026T 20000300155T Filter Sub-Assy 1112221905 11122219 1112221905 Display Board 30565260 30565260 30565281 Front Case Assy 00000200040 00000200040 00000200040 Guide Louver 1051276301 1051276301 1051276301 Helicoid Tongue 26112508 26112508 26112508...
- Page 80 Service Manual Part Code Description GWH12QB-K6DNC4I/I GWH12QB-K6DNB8I/I Product Code CB444N07501 CB438N06802 Front Panel 20000300105S 20000300073T Filter Sub-Assy 1112221905 1112221905 Display Board 30565260 30565260 Front Case Assy 00000200040 00000200040 Guide Louver 1051276301 1051276301 Helicoid Tongue 26112508 26112508 Left Axile Bush 10512037...
- Page 81 Service Manual 10.2 Outdoor Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 82 Service Manual Part Code Description GWH12QB-K6DNB8I/O Product Code CB438W06800 Left Side Plate 01303200P Fan Motor 1501308507 Motor Support 01703136 Condenser Assy 011002000588 Top Cover Sub-Assy 01253081 Rear Grill 01475014 Clapboard Sub-Assy 01233180 Compressor and Fittings 00103925G Compressor Gasket 76710287 4-Way Valve Assy...
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Page 83: Removal Procedure
Service Manual 11. Removal Procedure Caution: discharge the refrigerant 11.1 Removal Procedure of Indoor Unit completely before removal. Step Procedure 1. Remove fi lter assembly Front panel Open the front panel. Push the left fi lter and right fi lter until they are separate from the groove on the front panel. - Page 84 Service Manual Step Procedure 4. Remove detecting plate(wifi) and electric box cover2 Remove the screws fixing detecting plate and remove detecting plate(wifi). Detecting plate(WIFI) Remove the screws fixing electric box cober2 and remove electric box2. 5. Remove front case sub-assy Screws Remove the screws fixing front case.
- Page 85 Service Manual Step Procedure 7. Remove electric box assy Screw Loosen the connection clasps between shield cover of electric box sub-assy and Clasps electric box, and then remove the shield cover of electric box sub-assy. Remove the screw fi xing electric box assy . Electric box Shield cover of electric box sub-assy...
- Page 86 Service Manual Step Procedure Instruction: Some wiring terminal of this product is with lock catch and other devices. circlip The pulling method is as below: holder 1.Remove the soft sheath for some terminals at fi rst, hold the circlip and then pull out the terminals.
- Page 87 Service Manual Step Procedure 9. Remove motor and cross fl ow blade Remove the screws fixing motor clamp Screws and then remove the motor clamp. Motor clamp Cross fl ow Remove the screws at the connection Screw Motor place of cross flow blade and motor; lift Holder the motor and cross flow blade upwards sub-assy...
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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. Step Procedure 1.Remove big handle Before disassamble. Remove the screws fixing handle、valve big handle cover and then remove them. - Page 89 Service Manual Step Procedure 3.Remove grille 、protective grille and front panel Remove connection screws between the front grille and the front panel. Then remove the front grille. Remove connection screws connecting the front protective panel with the chassis and the motor support, and grille then remove the front panel.
- Page 90 Service Manual Step Procedure 6.Remove motor and motor support Remove the screws fixing motor and then remove the motor. Remove the screws fixing motor support and then remove the motor support. motor support motor 7.Remove electric box assy Remove the screws fixing electric box assy; cut off electric box assy the tieline;...
- Page 91 Service Manual Step Procedure 9.Remove 4-way valve assy 4-way valve assy Unsolder the welding joints connecting the 4-way valve assy with capillary sub-assy, compressor and condenser; remove the 4-way valve. Note: capillary Before unsoldering the welding joint, wrap the 4-way valve with a wet cloth completely to avoid damage to the valve caused by high temperature.
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Page 92: 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 93: 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 94: 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( C) Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579... - Page 95 Service Manual Resistance Table of Tube Temperature Sensors for Outdoor and Indoor (20K) Temp( C) Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 181.4 25.01 5.13 1.427 171.4 23.9 4.948 1.386 162.1 22.85 4.773 1.346 153.3 21.85 4.605 1.307 20.9 4.443 1.269 137.2...
- Page 96 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor (50K) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) 853.5 18.34 4.75 799.8 93.42 17.65 4.61 89.07 16.99 4.47 703.8 84.95 16.36 4.33 660.8 81.05 15.75 4.20 620.8 77.35 15.17 4.08...
- Page 97 Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 E-mail: gree@gree.com.cn www.gree.com HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED Add: Unit 2612,26/F.,Miramar Tower 132 Nathan Road,TST,Kowloon,HK Tel: (852) 31658898 Fax: (852) 31651029 For product improvement, specifications and appearance in this manual are subject to change without prior notice.
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