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Gree GWH09RA-K3DNA1B Service Manual
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Gree GWH09RA-K3DNA1B Service Manual

Gree GWH09RA-K3DNA1B Service Manual

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Change for Life
Service Manual
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI

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Summary of Contents for Gree GWH09RA-K3DNA1B

  • Page 1 Change for Life Service Manual GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...
  • Page 5 Installing, starting up, and servicing air conditioner can be Make sure the outdoor unit is installed on a stable, level hazardous due to system pressure, electrical components, surface with no accumulation of snow, leaves, or trash and equipment location, etc. beside.
  • Page 14 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 15 Indoor side noise when blowing Heating Cooling Middle High Indoor fan motor rotating speed Compressor frequency(Hz)
  • Page 18 4-Way valve HEAT EXCHANGER (EVAPORATOR) Accumlator Compressor HEAT EXCHANGER (EVAPORATOR) Strainer Capillary Strainer COOLING HEATING...
  • Page 19 Symbol Color symbol Symbol Parts name BLUE COMP COMPRESSOR YELLOW CT12 OVERLOAD 4-WAY VALVE ORANGE PROTECTIVE EARTH BROWN ELECTRONIC EXPANSION VALVE BLACK YEGN YELLOW GREEN WHITE POWER DISPLAY ROOM TUBE TEM.SENSOR TEM.SENSOR YEGN W1 BU N(1) DISP-1 DISP-2 W2 BK ROOM TUBE COM-OUT...
  • Page 20 ROOM DISCHARGE TUBE REACTOR TEMP. TEMP. TEMP. W8 YEGN SENSOR SENSOR SENSOR YEGN LX1-1 LX1-2 AC-L2 N(1) AC-L3 COM-OUT AC-N1 AC-N AC-L YEGN AC-N2 AC-L1 AC-L OVC-COMP OFAN HEAT-L HEAT-N1 HEAT-N2 CLAPBOARD ELECTRICAL SUB-ASSY BU YE RD BOTTOM BAND COMP.BAND YEGN HEATER HEATER...
  • Page 21 TUBE ROOM DISCHARGE REACTOR TEMP. TEMP. TEMP. SENSOR SENSOR SENSOR YEGN LX1-1 LX1-2 AC-L2 W23 BN AC-L5 N(1) AC-L4 AC-L3 AC-L1 AC-L AC-N1 AC-L AC-N YEGN AC-N2 COMU AC-N3 OVC-COMP OFAN U V W CLAPBOARD W13 W14 W15 ELECTRICAL SUB-ASSY L2 L2 YEGN YEGN...
  • Page 22 TOP VIEW Solid-state relay Port of neutral wire Auto button Feedback of indoor fan Live wire of health function Port of indoor fan Port of motor for vertical swing Port of motor for horizontal swing Protective tube Buzzer Port of indoor ambient temp sensor Port of indoor pipe temp sensor...
  • Page 23 compressor fan neilsbed four-way valve electric heater inductance pin1 inductance pin2 chassis e ectric heater 10-core communication cable temp. sensor overload protection compressor electric expansion valve...
  • Page 24 compressor inductance pin1 inductance pin2 fan four-way valve electric heater chassis e ectric heater communication cable temp. sensor overload electric expansion valve compressor protection low pressure valve...
  • Page 25 ON/OFF Press it to start or stop operation. Press it to decrease temperaturesetting. Press it to increase temperaturesetting. MODE • • Press it to select operation mode(AUTO/COOL/DRY/FAN/HEAT). Press it to set fan speed. SWING Press it to set swing angle. I FEEL Press it to set HEALTH or AIR function.

  • Page 26: Remote Controller Description

    LOCK icon: is displayed by pressing "+" and “-” buttons simultaneously. Press them again to clear the display. SET TIME display: After pressing TIMER button,ON or OFF will blink.This area will show the set time. DIGITAL display: This area will show the set temperature. In SAVE mode,"SE" will be displayed. AIR icon: is displayed when pressing the AIR button.Press this button again to clear the display.
  • Page 27 SWING: Press this button to set up & down swing angle, which circularly changes as below: This remote controller is universal. If any command is sent out,the unit will carry out the command as indicates the guide louver swings as: I FEEL: Press this button to turn on I FEEL function.

  • Page 28: Replacement Of Batteries

    Press “TEMP” and “CLOCK” simultaneously in HEAT mode to start 8℃ Heating Function Nixie tube on the remote controller displays “ ” and a selected temperature of “ 8℃”. (46 if Fahrenheit is adopted). Repeat the operation to quit the function. About Back-lighting Function The unit lights for 4s when energizing for the first time, and 3s for later press.

  • Page 29: Antifreezing Protection

    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 30: Overcurrent Protection

    (3) HEAT mode The condition and process of heating If T ≤T , HEAT mode will act, the compressor, outdoor fan and reversal valve will run, the indoor fan will delay preset 3min to stop at the latest If T ,the unit will keep running in the original mode.
  • Page 31 Note: T indicated in 1 and 2 refers to, under initially heating mode, the indoor ambient temperature before the indoor amb. command to start the compressor is performed according to the program, or after the unit is withdrawn from defrost, the indoor ambient temperature before the defrost symbol is cleared.
  • Page 32 Designation of sensors Faults The sensor is detected to be open-circuited or short-circuited for successive 30 Indoor ambient temperature seconds The sensor is detected to be open-circuited or short-circuited for successive 30 Indoor tube temperature seconds The sensor is detected to be open-circuited or short-circuited for successive 30 Outdoor ambient temperature seconds The sensor is detected to be open-circuited or short-circuited for successive 30...
  • Page 33 swinging states: Location L, Location A, Location B, Location C, Location D, Location L to Location D, stop at any location between L-D (the included angle between L~D is the same). The air deflector will be closed at 0 Location, and the swinging is effectual only on condition that setting the swinging order and the inner fan is running.
  • Page 36 Space to the ceiling 15 cm Above Space to the wall 15 cm Above 15 cm Above Space to the wall 300 cm Above Above Air outlet side Space to the floor The dimensions of the space necessary for proper ●...
  • Page 37 Wall Wall Mark on the middle of it Gradienter Space Space to the to the wall wall above above Φ55 Φ55 Right Left (Rear piping hole) (Rear piping hole) Outdoor Indoor Wall pipe Seal pad Φ outlet pipe of indoor unit outlet pipe of drain hose indoor unit...
  • Page 38 External connection Gas side pipe electric wire Liquid side piping Tailing 2 Gas side piping Tailing 1 insulation Liquid side Piping insulation Fig.3 Finally wrap it Water drainage pipe with tape Left Right Left rear Fig.4 Right rear Fixing hook Mounting plate Mounting...
  • Page 39 Liquid pipe Vacuum Gas pipe gauge Valve Vacuum pump Drain-water hole Bottom frame Drain connecter Hose (available commercially, inner dia. 16mm) Items to be checked Possible malfunction Has it been fixed firmly? The unit may drop, shake or emit noise. It may cause insufficient cooling(heating) Have you done the refrigerant leakage test? capacity...
  • Page 40 Fig. a Fig. b Air filter Healthy filter Fig. c...
  • Page 50 Note:When replacing the controller, make sure insert the wire jumper into the new controller, otherwire 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”. leakage.
  • Page 51 Improper set of temperature Adjust set temperature If cooling (heating) load is Check the forecasted load of cooling (heating) proper heck 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- Replace the compressor sure and the low pressure in-...
  • Page 52 The indoor fan motor is burned or breaks or has the heat protector Replace the fan motor or the defective part. malfunction. The built-in heat protector of the Replace the fan motor The fan does not motor breaks frequently because the run when it is set motor is abnormal.
  • Page 53 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...

  • Page 54: Yellow Led

    Name of Operation Status Yellow LED Red LED Green LED Display on IDU Compressure operates Blink once n i l n i l H5(displayed after it occurs for IPM protection Blink for 4 times successively 6 times) n i l n i l n i l n i l...
  • Page 57 (1) Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel) Main Check Pionts: Use AC voltmeter to check if the voltage between terminal L and N on the wiring board id within 210VAC~240VAC. If the reactor (L) is correctly connected? If the connection is loose or fallen? If the reactor (L) is damaged? Fault diagnosis process: Turn on the unit and wait 1 minute...
  • Page 58 Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring terminal L and N machine has run for restore it to board XT is within a period of time?
  • Page 59 (3) High temperature and overload protection diagnosis (AP1 here in after refers to the control board of the outdoor unit) Mainly detect: Is outdoor ambienttemperature in normal range? After the outdoor and indoor fans operating normally? Is the heat dissipation environment inside and outside the unit is good? Overheat and high temperature protection Normal protection, please operate it after the...
  • Page 60 (4) Start-up failure(following AP1 for outdoor unit control board) Mainly detect: Whether the compressor wiring is connected correct? Is time for compressor stopping enough? Is compressor broken? Power on the unit Is stop time of the compressor Restart it up after 3 minutes longer than 3 minutes? Does startup fail? Are the wires for the compressor connected...
  • Page 61 (5) Out of step diagnosis for the compressor (AP1 hereunafter refers ti the control board of the outdoor unit) Main detect: Whether the system pressure is too high? Whether the input voltage is too low? Out of step occurs in Out of step occurs once the operation unit is powered on.
  • Page 62 (6) Overload and air exhaust malfuntion diagnosis (following AP1 for outdoor unit unit control board) Mainly detect: Wether the PMV is connected well or not? Is PMV damaged? Is refrigerant leaked? 20 minutes after the complete unit is powered o ff Is the terminal FA for the Connect the wires correctly...
  • Page 63 (7) Power factor correct or (PFC) fault (a fault of outdoor unit)(AP1 here in after refers to the control board of the outdoor unit) Start Check wiring of the reactor (L) of the outdoor unit and the PFC capacitor Replace it as per the Whether there is any wiring diagram and If the fault is eliminated?
  • Page 64 (8) Communication malfunction:(following AP1 for outdoor unit control board) Mainly detect: 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? Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? The flow chart fir malfunction detect: Start Did the equipment operate...
  • Page 67 Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembly. 1. Before disassembly of the unit 2. Remove filter and horizontal louver Open the panel. Loosen clasps on filter and then remove the filter.
  • 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 Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembly. Remove big handle Before disassembly Remove 1 connection screw fixing big handleand then removethe big handle. Handle Remove top cover plate Top panel Remove 3 connection screws among top cover plate, front panel and right...
  • Page 73 3. Remove front grill and front panel Remove 2 connection screws between front grill and front panel. Then remove front panel. Remove 5 connection screws among front panel, chassis and motor support. Then remove front panel. front grill front panel 4.
  • Page 74 Remove electric box assy Electric box assy Remove the 2 screws fixing the cover of electric box. Lift to remove the cover. Loosen the wire and disconnect the terminal. Lift to remove the electric box assy. 7. Disassemble 4-way Valve Assy Unscrew the fastening nut of the 4-way Valve 4-way Valve Assy Assy coil and remove the coil.
  • Page 75 9. Disassemble 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 76 11. Disassemble 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 77 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 For continuous improvement in the products, Gree reserves the right to modidy the product specification and appearance in this manual without notice and without incurring any obligations.

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