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Gree GWH09RB-K3DBA3E Service Manual
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Gree GWH09RB-K3DBA3E Service Manual

Refrigerant r410a
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Change for Life

Service Manual

GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

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Summary of Contents for Gree GWH09RB-K3DBA3E

  • Page 1: Service Manual

    Change for Life Service Manual GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...
  • Page 9 Cooling Heating Condition Condition Indoor:DB 20 Indoor:DB 27 WB19 Indoor air flow:Turbo Indoor air flow: Turbo Pipe length:5m Pipe length:5m Voltage:230V Voltage:230V Compressor Speed(rps) Compressor Speed(rps) n i l Condition Condition Indoor:DB20 Indoor:DB27 WB19 Indoor air flow: Turbo Indoor air flow: Turbo Pipe length:5m Pipe length:5m...
  • Page 10 Indoor side noise Outdoor side noise Heating Cooling Super High High Middle Indoor fan motor rotating speed Compressor frequency(Hz)
  • Page 11 Φ55 Φ55...

  • Page 13: Indoor Unit

    Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Discharge Heat Suction exchanger compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Electron Strainer expansion valve COOLING HEATING...
  • Page 14 POWER ROOM DISPLAY TUBE TEM.SENSOR TEM.SENSOR YEGN W1 BU N(1) DISP-1 DISP-2 W2 BK ROOM TUBE COM-OUT W3 BN YEGN AC-L L-OUT W4 YEGN JUMP EVAPORATOR SWING-UD HEALTH-L HEALTH-N COOL PLASMA GENERATOR YEGN SWING MOTOR(U.D) FAN MOTOR...
  • Page 15 DISPLAY POWER ROOM TUBE TEM.SENSOR TEM.SENSOR YEGN CN1 CN2 W1 BU N(1) ROOM TUBE DISP-1 DISP-2 W2 BK COM-OUT W3 BN YEGN AC-L L-OUT W4 YEGN JUMP EVAPORATOR SWING-UD HEALTH-L HEALTH-N COOL PLASMA GENERATOR SWING MOTOR MOTOR(U.D) COMP W8YEGN COMP W9BU EXHAUST TUBE...
  • Page 16 COMP W8YEGN TUBE EXHAUST OUTROOM COMP W9BU TEM.SENSOR TEM.SENSOR TEM.SENSOR W3YEGN W5BU W7RD W6YE W10RD COMP-U COMP-V COMP-W YEGN OVC-COMP W2BU N(1) W4BK COMU W1BN AC-L1 OFAN1 HEAT-N2 HEAT-L HEAT-N1 AC-L2 LX-2 LX-1 W13WH HEATER HEATER (COMP) (CHASSIS) COMP W8YEGN EXHAUST TUBE OUTROOM...
  • Page 18 Input of neutral Interface 1 of Neutral wire of electric Live wire of 4-way 13 Temp sensor wire of power electric reactor heater of chassis valve Input of live Interface 2 of Neutral wire of electric Live wire of electric U,V,W three phases wire of power electric reactor...

  • Page 19: Timer On / Timer Off

    ON/OFF button - button + button MODE button H O U R ONOFF FAN button SWING button I FEEL button button SLEEP button TEMP button TIMER-ON button CLOCK button TIMER-OFF button TURBO button LIGHT button X-FAN button Set fan speed I feel Send signal heating function...
  • Page 22 battery reinstall remove Cover of battery box Panel Emergency operation switch...
  • Page 23 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 24 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 26 Heating angle O(0°) Cooling angle O(0°)
  • Page 30 Space to the wall Space to the wall At least 15cm At least 15cm Drainage pipe...
  • Page 31 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 33: Outlet Pipe

    Wall Wall Level meter Mark in the middle of it Space Space to the to the Open-end 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 34 Panel Screw Wiring cover Indoor and outdoor power cord Indoor unit pipe Liquid pipe Band Drain hose connection wire sleeve Drain hose Connection pipe Band Indoor power cord blue black brown yellow- green Connect to outdoor unit Wiring board ( 1 ) Wire clip Note: The wiring connect is for reference only, please refer to the actual one .
  • Page 35 N(1) yellow- blue black violet green Connect to indoor unit Wiring boar d Grounding wire Wire clip Drain vent Chassis Handle Outdoor drain join t Note: the wiring connect is for reference only, Drain hose please refer to the actual one At least 3cm above the floor Foot holes screw...
  • Page 36 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 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 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 40 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 41 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 42 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 43 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 Malfunction Dual-8 A/C status Possible Causes 0.5s) 0.5s and OFF 0.5s Code Name Operation...
  • Page 44 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 Is malfunction eliminated Is the...
  • Page 45 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 Is the...
  • Page 46 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 jumper cap tightly Is malfunction eliminated...
  • Page 47 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 with overload? eliminated...
  • Page 48 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. The zero-cross detection circuit of the mainboard is defined abnormal.Replace the mainboard with the same model...
  • Page 49 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 50 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 51 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 52 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 54 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 55 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 56 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 67 1. Before disassembly of the unit 2. Remove filter and horizontal louver Open the panel. Loosen clasps on filter and then remove the filter. filter Remove axial bush on horizontal louver, and bend the horizontal louver slightly to remove it. horizontal louver...
  • Page 68 3. Remove display and panel display Remove screws on display and then remove the display. screw front panel assy rotation shaft Quit the rotation shaft of panel from groove, and then remove the panel. 4. Remove electric box cover 2 screw Remove screws connecting electric box cover 2 and front case, and then remove the electric box...
  • Page 69 5. Remove front case Remove screws connecting front case and bottom case. screw clasp Open screw cover by hand, remove other 3 screws, loosen clasps connecting front case and bottom case and then remove the front case. 6. Remove swing blade Remove 10 clasps connecting swing blade and bottom case.
  • Page 70 7. Remove electric box indoor temperature sensor Pull out the indoor temperature sensor. electric box cover Remove screws connecting electric box and bottom case, loosen clasps, remove screws connecting earthing wire and evaporator, and then remove the electric box. electric box 8.
  • Page 71 9. Remove cross flow blade and motor Remove screws on stepping motor, and then remove the stepping motor. stepping motor Remove 4 screws connecting motor press plate and bottom case, and then remove motor press plate. motor press plate Remove cross flow blade and motor. O-Gasket sub-assy of Bearing Remove shaft rubber cushion block.
  • Page 72 Steps Procedure 1.Remove big handle Before disassembly. Remove the connection screw fixing the big handle and then remove the handle. Handle 2. Remove top cover Top panel Remove connection screws connecting the top cover plate with the front panel and the right side plate, and then remove the top panel.
  • Page 73 Steps Procedure 3.Remove grille and front panel Remove connection screws between the front grille and the front panel. Then remove the front grille. Front panel Remove connection screws connecting the front panel with the chassis and the motor support, and then remove the front panel. Grille 4.Remove right side plate Right side plate...
  • Page 74 Steps Procedure 5.Remove axial flow blade Remove the nut fixing the blade and then remove the axial flow blade. Axial flow blade 6.Remove electric box assy electric box assy Remove screws fixing the electric box assy; loosen the wire bundle and unplug the wiring terminals. Then lift the electric box to remove it.
  • Page 75 Steps Procedure 4-way Valve Assy and Capillary Sub-assy 8.Remove Unscrew the fastening nut of the 4-way Valve Assy coil and remove the coil. Wrap the 4- way Valve Assy with wet cotton and unsolder 4-way Valve Assy the 4 weld spots connecting the 4-way Valve Assy to take it out.(Note: Refrigerant should be discharged firstly.) Welding process should be as quickly as possible and keep...
  • Page 76 Steps Procedure 11.Remove valve sub-assy Remove the screws fixing big and small valve, welding cut the welding spots of four-way valve assy, to remove the valve sub-assy. small valve big valve valve support Compressor Remove Remove the 3 footing screws of the compressor and remove the compressor.
  • Page 77 1. Before disassembly 2. Remove top cover Remove the screws connecting top cover, left and right side plate, as well as panel, to remove the top top cover cover. 3. Remove handle Remove the screws connecting handle and right side plate, to remove the handle.
  • Page 78 4. Remove panel and grille Remove the screws fixing panel, to remove the panel. Remove the screws connecting panel grille and panel, loosen the clamp, to remove the panel grille. panel grille 5. Remove valve cover Remove the screw fixing valve cover, to remove the cover.
  • Page 79 6. Remove left side plate Remove the screws fixing left side plate and condenser support board, to remove the left side plate. left side plate 7. Remove cross fan blade Remove the screw nut fixing cross fan blade, remove the gasket and spring cushion, to remove the cross fan blade.
  • Page 80 9. Remove electric box assy cover electric box Remove screws fixing electric box assy and mid-isolation board, loosen the bonding tie, pull off the wiring terminal, lift to remove the electric box assy. electric box assy 10. Remove electric reactor Remove the screws fixing electric reactor, to remove the electric reactor.
  • Page 81 12. Remove mid-isolation board Remove the screws connecting mid-isolation board, chassis and condenser assy, to remove the mid-isolation. mid-isolation board 13. Remove four-way valve assy four-way valve assy Welding cut the spot weld of four-way valve assy, compressor air suction/discharging valve and condenser pipe outlet, lift to remove the four-way valve assy.
  • Page 82 15. Remove big and small valve assy Remove screws connecting condenser assy and chassis, to remove the condenser assy. Remove the screws fixing big and small valve, to remove the valves. small valve big valve condenser assy...
  • Page 84 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 85 Temp( ) Resistance(kΩ) Temp( ) 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 1.009 16.39 3.454 0.98 108.7 15.68 3.333 0.952 102.9 3.217 0.925 97.4 14.36 3.105 0.898 92.22 13.74 2.998 0.873 87.35 13.16...
  • Page 86 Temp( ) Resistance(kΩ) Temp( ) 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 4.289 1.233 129.9 19.14 4.14 1.198 18.13 3.998 1.164 116.5 17.55 3.861...
  • Page 87 Temp( ) Resistance(kΩ) Temp( ) Resistance(kΩ) Temp( ) Resistance(kΩ) Temp( Resistance(kΩ) 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 77.35 15.17 4.079 580.6 73.83 14.62 3.958 548.9 70.5 14.09 3.841 516.6 67.34...

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