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Gree GWH12RB-K3DNA5G Service Manual
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Gree GWH12RB-K3DNA5G Service Manual

Gree GWH12RB-K3DNA5G Service Manual

Indoor/outdoor units
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Change for Life

Service Manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

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Summary of Contents for Gree GWH12RB-K3DNA5G

  • Page 1: Service Manual

    Change for Life Service Manual GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...
  • Page 4 MODE I F EEL TIMER CLOCK TIMER X-FAN TEMP TURBO SLEEP LIGHT...
  • Page 7 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) Conditions Conditions 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 –15 –10...
  • Page 8 Indoor side noise when blowing Outdoor side noise when Compressor speed changed Supper High High Middle Indoor fan motor rotating speed Compressor Speed(rps)
  • Page 9 Φ55 Φ55...

  • Page 10: Indoor Unit

    Indoor unit Outdoor 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 Capillary Electron Strainer expansion valve COOLING HEATING...
  • Page 12 The electrical NOTE: heaters are ground only Motor optional. applies to the iron shell motor.

  • Page 15: Timer On/Timer Off

    set fan speed operation mode auto mode send signal health function cool mode I feel dry mode ventilation operation X-fan mode fan mode set temperature heat mode turbo mode set time TIMER ON/TIMER clock sleep mode child lock light Temp. display type :set temp.
  • Page 16 AUTO COOL DRY HEAT...
  • Page 17 no display (horizontal louvers stops at current position) no display...
  • Page 18 Sketch map for replacing batteries...
  • Page 19 Tamb. Start cooling Tpreset Original operating status Tpreset –2 ˚C Stop cooling ≥ 6 min. ≥ 3 min. ≥ 6 min. Compressor Outdoor fan Setting fan speed Indoor fan Stop During antifreeze protection Compressor Outdoor fan Indoor fan Preset speed Stop...
  • Page 20 Stop heating preset Original operating status preset Start heating min. Compressor Outdoor fan preset wind min. preset wind Indoor fan min. Reversing valve Stop The period of defrosting 7min Four-way valve Compressor Outdoor Unit Indoor Unit 3min Set fan speed Stop...
  • Page 22 Heating angle O(0°) Cooling angle O(0°)
  • Page 27 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 29: Drain Hose

    Wall Wall Level meter Mark in the middle of it Space Space Open-end to the to the wrench wall wall above above Union nut 150mm 150mm Pipe Pipe joint Union nut Pipe Torque wrench Right Left Φ55mm Φ55mm Indoor pipe Rear piping hole Rear piping hole Insulating pipe...
  • Page 30 Screw Panel Wiring cover Indoor and outdoor power cord Indoor unit pipe Cable-cross hole Liquid pipe Band Drain hose Power connection wire Drain hose Connection pipe Band Indoor power cord blue black brown yellow- green Connect to outdoor unit Note: The wiring connect is for reference only, please refer to the actual one.
  • Page 31 OUTDOOR UNIT N(1) 2 yellow- blue black brown green N(1) INDOOR UNIT Drain vent Chassis Outdoor drain join t Drain hose At least 3cm above the floor Foot holes Screw Handle Foot holes The drain hos can't raise upwards Wall U-shaped curve Drain hose Liquid pipe...
  • Page 32 The drain hose can't be fluctuant The water outlet can't be placed The drain hose in water can't be fluctuant The water outlet can't be fluctuant Liquid valve Piezometer Gas valve Valve cap Refrigerant charging vent Nut of refrigerant Charging vent Vacuum pump Inner hexagon spanner...
  • Page 33 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 0.5s Display...
  • Page 34 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 0.5s Display...
  • Page 35 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 0.5s Display...
  • Page 36 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 0.5s Display...
  • Page 37 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 0.5s Display...
  • Page 38 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 0.5s Display...
  • Page 39 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 44 Turn on the unit and wait 1 minute Use AC voltmeter to measure the voltage on the two ends of electrolytic capacitor (see fig 30) Malfunction of Replace outdoor Voltage higher the outdoor mainboard than 200V? mainboard AP1 Measure the voltage input with AC voltmeter (see fig 30) Power supply is...
  • Page 45 H5, H7 or P5 is displayed after turning on the unit Measure if the voltage The unit starts Repair power supply to make input is within 180~265V Restart the unit operation again the power voltage normal with AC voltmeter (see fig 30) The compressor Adjust it properly The unit starts...
  • Page 46 E8 is displayed Normal protection, please If the outdoor Unit restarts use it after improving the ambient temperature is higher normally outdoor ambient temperature than 53℃? Improve the radiating environment If the radiating of indoor of unit (clean the heat exchanger Unit restarts and outdoor unit is good? and remove surrounding obstacles)
  • Page 47 Turn on the unit The stop time is not sufficient and If the stop time of compressor the high and low pressure of system is more than 3min? is not balanced , please start the unit after 3min Check the connection situation of outdoor mainboard AP1 and If the compressor wire compressor COMP, and the...
  • Page 49 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 50 start If power plug is connected Is the malfunction Connect the plug correctly well with the socket eliminated? Check the connection wire between reactor mainboard and situation of connection Reconnect the wire or Power on and If there is short circuit or the replace the connection Is the malfunction restart the unit...
  • Page 51 If the unit operates normally before malfunction Check the connection wire according to the wiring diagram. Check built-in wiring If the connection wire of indoor and outdoor is connected well? unit Reconnect the wire or Replace the If the wiring is replace the connection wire damaged?
  • Page 54 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 with a voltmeter...
  • Page 57 MODE I F EEL CLOCK TIMER X-FAN TEMP TIMER TURBO SLEEP LIGHT...
  • Page 61 Steps Procedure 1. Remove filter panel Open the panel. Loosen the clasp shown in the fig and then pull the left filter and right filer outwards to remove them. clasp left filter and right filer 2. Remove horizontal louver Push out the axile bush on horizontal louver. Bend the horizontal louver with hand and then separate the horizontal louver from the horizontal louver...
  • Page 62 Steps Procedure display screw 3. Remove panel panel Remove two screws fixing display. Open the front panel; separate the panel rotation shaft from the groove fixing the front panel and then removes the front panel. Note: The display of some models is fixed on the panel;...
  • Page 63 Steps Procedure 6. Remove vertical louver Loosen the connection clasps between vertical bottom louver and bottom case to remove vertical case louver. vertical louver clasps 7. Remove electric box assy Loosen the connection clasps between shield cover of electric box sub-assy and electric box, electric box and then remove the shield cover of electric box sub-assy.
  • Page 64 Steps Procedure 8. Remove evaporator assy pipe clamp At the back of the unit, remove the screw fixing connection pipe clamp and then remove the connection pipe clamp. screw evaporator Remove 3 screws fixing evaporator assy. screws connection pipe Adjust the position of connection pipe on evaporator slightly and then lift the evaporator upwards to remove it.
  • Page 65 Steps Procedure 10. Remove motor and cross flow blade motor clamp Remove the screws fixing motor clamp and then remove the motor clamp. cross flow screws Remove the screws at the connection place of cross flow blade and motor; lift the motor and cross flow blade upwards to remove them.
  • Page 66 Steps Procedure 1.Remove big handle Before disassamble Remove 1 connection screw fixing big Big handle handleand then removethe big handle. 2. Remove top cover Top cover Remove 3 connection screws among top cover plate, front panel and right sideplate. Then remove top cover plate.
  • Page 67 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 68 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 Assy coil and remove the coil.
  • Page 69 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. 10.Remove clapboard sub-assy Clapboard Sub-Assy Loosen the screws of the Clapboard Sub-Assy .
  • Page 70 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 72 Pipe Pipe cutter Leaning Uneven Burr Pipe Shaper Downwards Union pipe Pipe Hard mold Expander Pipe Smooth surface Improper expanding damaged leaning crack uneven surface thickness The length is equal...

  • Page 76: Gree Electric Appliances,Inc.of Zhuhai

    GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China 519070 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...

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