Gree ALL-MATCH R32 Series Service Manual
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Gree ALL-MATCH R32 Series Service Manual

Gree ALL-MATCH R32 Series Service Manual

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ALL-MATCH INVERTER SERIES_R32
Service Manual
DUC30HP230V1R32AH
DUC36HP230V1R32AH
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

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Summary of Contents for Gree ALL-MATCH R32 Series

  • Page 1 Change for life ALL-MATCH INVERTER SERIES_R32 Service Manual DUC30HP230V1R32AH DUC36HP230V1R32AH GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI...

  • Page 2: Table Of Contents

    .................17 6.1 Wired Controller for XE72-44/E 6.2 Brief Description of Models and Functions ..........36 ................40 6.3 GREE+ App Operation Manual ..............41 6.4 Ewpe Smart App Operation Manual Part II : Installation and Maintenance ....42 7. Notes for Installation and Maintenance ..
  • Page 3 10. Maintenance .............. 65 10.1 Error Code List ......................65 10.2 Procedure of Troubleshooting ................70 10.3 Troubleshooting for Normal Malfunction ............82 11. Removal Procedure ..........84 ..............84 11.1 Removal Procedure of Indoor Unit .............88 11.2 Removal Procedure of Outdoor Unit Appendix ................

  • Page 4: Part I : Technical Information

    1. Summary Indoor Unit: DUC36HP230V1R32AH GFH(12)DA-D6DNA1A/I DUC30HP230V1R32AH Outdoor Unit: LIV30HP230V1R32AO LIV36HP230V1R32AO GWH12AUCXD-D6DNA1B/O Wired Controller: XE72-44/E Technical Information...

  • Page 5: Model List

    Model list: Outdoor product Indoor product Model product code Indoor model Outdoor model code code GWH12AUCXD-D6DNA1B/O CN210N0390-F GFH(12)DA-D6DNA1A/I CN210N0390 GWH12AUCXD-D6DNA1B/O CB575W01700 GFH(12)DA-D6DNA1A/I LIV30HP230V1R32AO CB574W19100-F DUC30HP230V1R32AH CN210N0560 LIV30HP230V1R32AO CB574W19100 DUC30HP230V1R32AH LIV36HP230V1R32AO CB574W18100-F DUC36HP230V1R32AH CN210N0540 LIV36HP230V1R32AO CB574W18100 DUC36HP230V1R32AH Technical Information...

  • Page 6: Specifications

    2. Specifications GWH12AUCXD-D6DNA1B/O LIV30HP230V1R32AO Model DUC30HP230V1R32AH GFH(12)DA-D6DNA1A/I Product Code CN210N0390-F CB574W19100-F Rated Voltage 208/230 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity Btu/h 12000 30000 Heating Capacity Btu/h 12000 30000 Cooling Power Input 2600 Heating Power Input 2750 Cooling Current Input 4.41...
  • Page 7 Outdoor Unit Model GWH12AUCXD-D6DNA1B/O LIV30HP230V1R32AO Outdoor Unit Product Code CB575W01700 CB574W19100 ZHUHAI LANDA ZHUHAI LANDA Compressor Manufacturer COMPRESSOR CO.,LTD COMPRESSOR CO., LTD. Compressor Model QXF-M098zE170 QXFS-B221zX070S Compressor Oil FW68L FW68DA or equivalent Compressor Type Rotary Twin Rotary Compressor Locked Rotor Amp (L.R.A) Compressor Rated Load Amp (RLA) 18.5 Compressor Power Input...
  • Page 8 LIV36HP230V1R32AO Model DUC36HP230V1R32AH Product Code CB574W18100-F Rated Voltage 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity Btu/h 33600 Heating Capacity Btu/h 34000 Cooling Power Input 2814 Heating Power Input 2622 Cooling Current Input 13.5 Heating Current Input 14.7 Rated Input 4000...
  • Page 9 LIV36HP230V1R32AO Outdoor Unit Model Outdoor Unit Product Code CB574W18100 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO., LTD. Compressor Model QXFS-D280zX070 Compressor Oil FW68DA or equivalent Compressor Type Rotary Compressor Locked Rotor Amp (L.R.A) Compressor Rated Load Amp (RLA) Compressor Power Input 2294 Compressor Overload Protector Throttling Method...

  • Page 10: Outline Dimension Diagram

    3. Outline Dimension Diagram 3.1 Indoor Unit Duct Type Unit: inch Model 29 9/64 19 11/16 32 43/64 11 13/16 29 11/16 27 9/16 27 9/16 Technical Information...
  • Page 11 Unit: inch Model 37 3/32 23 15/64 35 7/16 10 15/64 25 25/32 27 1/4 54 3/8 23 1/32 52 3/4 10 15/64 25 25/32 27 7/16 Technical Information...

  • Page 12: Outdoor Unit

    3.2 Outdoor Unit 11 13/16 29 21/64 13 25/32 31 37/64 Unit:inch 20 5/32 36 11/32 14 17/32 16 13/16 39 3/8 Unit:inch 24 1/64 Technical Information...

  • Page 13: Refrigerant System Diagram

    4. Refrigerant System Diagram COOLING Outdoor unit Indoor unit pipe side Valve 4-Way valve Di s charge Heat Accumlator Suction exchanger Compressor (evaporator) Heat Liquid exchanger pipe (condenser) side Valve Strainer Electron Strainer expansion valve COOLING HEATING Connection pipe specification: Liquid pipe: 1/4"...

  • Page 14: Electrical Part

    5. Electrical Part 5.1 Wiring Diagram ● Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name White Green Jumper cap Yellow Brown COMP Compressor Blue Grounding wire YEGN Yellow/Green Black Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal louver for this model. ●...
  • Page 15 30/36K (OPTIONAL) (OPTIONAL) RECEIVER AND ROOM TEMP. TUBE TEMP. WIRED DISPLAY BOARD SENSOR SENSOR CONTROLLER SENSOR TERMINAL BLOCK ROOM TUBE DISP1 DISP2 COM-MANUAL WH(BU) N(1) N1(N) COM-OUT AP1 PRINTED CIRCUIT BOARD RD(BN) JUMP AC-L GN(YEGN) DC-MOTOR SWING-UD1 SWING-UD2 DOOR-C ELECTRIC BOX (OPTIONAL) UP-DOWN UP-DOWN...
  • Page 16 ● Outdoor Unit OPTIONAL OPTIONAL OPTIONAL WARNING Bottom 4-WAY OUTROOM EXHAUST ELECTRONIC OUTTUBE Please don't touch any terminal when the EXPANSION Band VALVE TEMP. TEMP. TEMP. machine is running ,stopping or has been VALVE Heater SENSOR SENSOR SENSOR powered off for less than 30 minutes to prevent the risk of electric shock ! (YE) VT(YE)

  • Page 17: Pcb Printed Diagram

    5.2 PCB Printed Diagram Indoor Unit 12/30/36K Name Name Interface of gate control DC water pump Wired controller New wind valve Display interface AC pump Jumper cap Interface of cold plasma Interface of left&right swing motor 2 Communication interface Interface of up&down swing motor 2 Interface of netural wire Interface of left&right swing motor 1 Interface of netural wire cold plasma...
  • Page 18 Outdoor Unit Name Earthing wire Neutral wire, live wire and communication cable 4-way valve Electric heating belt of chassis Outdoor fan Electronic expansion valve Temperature sensor Three-phase terminal of compressor Technical Information...
  • Page 19 30/36K GRJW936-A Name Name Neutral wire Terminal of high pressure protection Earthing wire Temperature sensor Live wire 10 Overload Communication wire Terminal of electronic expansion valve 4-way valve 12 Terminal of DRED Electric heating belt of chassis 13 E disk (Reserved) DC fan 14 Terminal of compressor Technical Information...

  • Page 20: Function And Control

    6. Function and Control 6.1 Wired Controller for XE72-44/E 1 Symbols on LCD 1.1 Outside View of the Wired Controller 1.2 LCD of the Wired Controller Fig.1 Outside View of the Wired Controller Fig.2 LCD of the Wired Controller Table 1 Display Instruction of Display Display...
  • Page 21 2 Buttons 2.1 Buttons on the Wired Controller Fig. 3 Buttons on the Wired Controller 2.2 Function of the Buttons Table 2 Name Function 1. Function selection and cancellation. SWING/ENTER 2. Setting of the up and down swing function. ▲ 1.
  • Page 22 3 Operation Instructions In the Cooling, Dry, Fan or Heating mode, the temperature setting range is 16°C~30°C(61°F~86°F). 3.1 ON/OFF In the Auto mode, the setting temperature is unadjustable. Press ON/OFF to turn on the unit and turn it off by another press. NOTE: If the wired controller receives the signals of remote NOTE: The state shown in Fig.4 indicates the “OFF”...
  • Page 23 3.5 Timer Setting Under the "ON" / "OFF" state of the unit, press Timer to set timer off / on. ● Timer on setting: press Timer, and then LCD will display "xx.x hour", with "hour" blinking. In this case press ▲ or ▼ to adjust the timing value.
  • Page 24 3.7 Left & Right Swing Setting ● Swing On: Press FUNCTION under on state of the unit to activate the swing function. In this case, will blink. After that, press SWING/ ENTER to make a confirmation. ● Swing Off: When the Swing function is on, press FUNCTION to enter the Swing setting interface, with blinking.
  • Page 25 3.8 Fresh Air Valve Function Setting ● Turn on fresh air valve function: Under unit on status, press FUNCTION button on the panel to select "Fresh air valve" function option. When icon flashes, it enters fresh air valve setting mode. Previous temperature display position will display the level of fresh air valve. Press ▲ or ▼ button to adjust the level of fresh air valve within the range from 1 to 10.
  • Page 26 3.9 Sleep Setting ● Sleep on: Press FUNCTION under on state of the unit till the unit enters the Sleep setting interface. Press SWING/ENTER to confirm the setting. ● Sleep off: When the Sleep function is activated, press FUNCTION to enter the Sleep setting interface. After that, press SWING/ENTER to can this function.
  • Page 27 3.10 Turbo Setting Turbo function: The unit at the high fan speed can realize quick cooling or heating so that the room temperature can quickly approach the setting value. In the Cooling or Heating mode, press FUNCTION till the unit enters the Turbo setting interface and then press SWING/ENTER to confirm the setting.
  • Page 28 3.11 Energy Saving Function Setting ● Turn on energy saving function: 1. Energy Saving Setting for Cooling When the unit runs under the COOL or DRY mode, press FUNCTION button to select "SAVE" function option, with "SAVE" flashing, and then press ▲ or ▼ to adjust the lower limit, after that, press the SWING/ENTER button to activate this function. 2.
  • Page 29 3.12 E-heater Setting E-heater (auxiliary electric heating function): In the Heating mode, E-heater is allowed to be turned on for improvement of efficiency. Once the wired controller or the remote controller enters the Heating mode, this function will be turned on automatically. Press FUNCTION in the Heating mode to enter the E-heater setting interface and then press SWING/ENTER to cancel this function.
  • Page 30 3.13 X-fan Setting X-fan function: After the unit is turned off, the water in evaporator of indoor unit will be automatically evaporated to avoid mildew. In the Cooling or Dry mode, press FUNCTION till the unit enters the X-fan setting interface and then press SWING/ENTER to active this function.
  • Page 31 3.14 Quiet Function Setting ● Turn on quiet function: Under unit on status, press FUNCTION button on the panel to select "Quiet" function option. When "Quiet" or "Auto quiet" flashes, it enters quiet function setting mode. Press ▲ or ▼ button to switch between "Quiet" and "Auto quiet" function. Then press SWING/ ENTER button to activate this function.
  • Page 32 3.15 Health Setting ● Health on: Press FUNCTION under on state of the unit till the unit enters the Health setting interface. Press SWING/ENTER to confirm the setting. ● Health off: When the Health function is activated, press FUNCTION to enter the Health setting interface. After that, press SWING/ ENTER to cancel this function.
  • Page 33 3.16 Absent Setting ● Absent on: Press FUNCTION under on state of the unit till the unit enters the Absent setting interface. Press SWING/ENTER to confirm the setting. ● Absent off: When the Absent function is activated, press FUNCTION to enter the Absent setting interface. After that, press SWING/ ENTER to cancel this function.
  • Page 34 3.17 I-Demand Setting ● I-Demand on: Press FUNCTION under on state of the unit till the unit enters the I-Demand setting interface. Press SWING/ENTER to confirm the setting. ● I-Demand off: When the I-Demand function is activated, press FUNCTION to enter the I-Demand setting interface. After that, press SWING/ENTER to cancel this function.
  • Page 35 3.18 WiFi Function Setting "Gree+" APP can be used to control it. Please scan the QR code to download it. APP can only set some common functions of WiFi wired controller: ON/OFF, mode, set temperature, FAN speed, etc. When using the APP for the first time, please reset the WiFi function of wired controller (reset WiFi to exfactory setting): Under off status, press "FUNCTION"...
  • Page 36 3.20 Two-way Ventilation Function Setting Under the "On/Off" state of the unit, press FUNCTION button on the panel to select "Two-way Ventilation" function option. Then press SWING/ENTER button to start up or turn off two-way ventilation function. When two-way ventilation function is started up, will be shown on wired controller.
  • Page 37 3.21 Other Functions state without memorizing the current data. 1. Lock NOTE: Upon startup of the unit without malfunction or under the "OFF" After connected with indoor unit, if the type of ambient temperature state of the unit, press and at the same time for 5 seconds till sensor has not been manually set, the wired controller will select the wired controller enters the Lock function.
  • Page 38 3.20 Other Functions state without memorizing the current data. 1. Lock NOTE: Upon startup of the unit without malfunction or under the "OFF" After connected with indoor unit, if the type of ambient temperature state of the unit, press and at the same time for 5 seconds till sensor has not been manually set, the wired controller will select the wired controller enters the Lock function.

  • Page 39: Brief Description Of Models And Functions

    6.2 Brief Description of Models and Functions ●Indoor Unit General timer and clock timer functions are compatible by equipping remote controller with different functions. 1.Basic function of system (1)Cooling mode (6) Memory function memorize compensation temperature, off-peak energization value. (1) Under this mode, fan and swing operates at setting status. Memory content: mode, up&down swing, light, set temperature, set Temperature setting range is 16~30 fan speed, general timer (clock timer cant be memorized).

  • Page 40: Outdoor Unit

    power recovery, compressor can only be started up after 180+T s 3. Special Functions at least. Defrosting Control ① Conditions for starting defrosting (13) SE control mode The unit operates at SE status. After the time for defrosting is judged to be satisfied, if the temperature for defrosting is satisfied after detections for (14) X-fan mode When X-fan function is turned on, after turn off the unit, indoor fan...
  • Page 41 (1) 4-way valve power control under heating mode 3. Reducing frequency at normal speed and power turn-off: a. Starts the machine under heating mode, the 4-way valve will get If [T ] ≤T <[T frequency reducing temperature at normal speed of module Module frequency reducing power immediately.
  • Page 42 allowed to operate. If it still can't run automatically when the out-of- (b) Open-Circuit Detection: the compressor should be detected on step protection for compressor happens to stop working for 6 times open-circuit when it runs 3min (it needn’t 30s in succession, it needs to press ON/OFF to operate.

  • Page 43: 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 44: Ewpe Smart App Operation Manual

    6.4 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 Download and installation...

  • Page 45: Notes For Installation And Maintenance

    7. Notes for Installation and Maintenance Safety Precautions: Important! by yourself. Please read the safety precautions carefully before installation 11. For the air conditioner without plug, an air switch must be installed in the circuit. The air switch should be all-pole and maintenance.

  • Page 46: Safety Precautions For Installing And Relocating The Unit

    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 If compressor starts running when stop valve is open and refrigerant circuit free from air or substances other than the connection pipe is not yet connected, air will be sucked in and specified refrigerant.

  • Page 47: Safety Operation Of Flammable Refrigerant

    Safety operation of flammable refrigerant Qualification of workers R32 refrigerant warning ● To realize the function of the air conditioner unit, a special Qualification of the working personnel for refrigerant circulates in the system. The used refrigerant is maintenance, service and repair operations the fluoride R32, which is specially cleaned.

  • Page 48: Safety Instructions For Transportation And Storage

    ● For appliances using FLAMMABLE REFRIGERANTS, Maintenance notes al l joints made in the installation betwe en parts of the ● Check whether the maintenance area or the room REFRIGERATING SYSTEM, with at least one part charged, shall area meet the requirement of the nameplate. be made in accordance with the following: - It’s only allowed to be operated in the rooms that meet the -A brazed, welded, or mechanical connection shall be made before...
  • Page 49 please open the window for ventilation to reduce the concentration any associated parts, appropriate fire extinguishing equipment shall of the refrigerant, and there can be no ignition source nearby. Once be available to hand. Have a dry powder or CO2 fire extinguisher you reach the safe area, contact the aftersales service team to adjacent to the charging area.
  • Page 50 This shall be reported to the owner of the equipment so all parties However, for flammable refrigerants it is important that best are advised. practice be followed, since flammability is a consideration. Initial safety checks shall include: The following procedure shall be adhered to: –...

  • Page 51: Marking Of Equipment Using Signs

    use of recovered refrigerant. It is essential that electrical power is set of instructions concerning the equipment that is at hand and available before the task is commenced. shall be suitable for the recovery of the flammable refrigerant. lf in a) Become familiar with the equipment and its operation.
  • Page 52 not cause a leak of the REFRIGERANT CHARGE. The maximum number of pieces of equipment permitted to be stored together will be determined by local regulations. Installation and Maintenance...

  • Page 53: Main Tools For Installation And Maintenance

    Main Tools for Installation and Maintenance Measuring tape Level meter Screw driver Impact drill Universal meter Drill head Electric drill Electroprobe Inner hexagon Torque wrench Electronic Open-end wrench spanner leakage detector Pressure meter Pipe pliers Pipe pliers Vacuum pump Soldering appliance Pipe cutter Pipe expander Pipe bender...

  • Page 54: Product Introduction

    8. Product introduction 8.1 Outline of the Unit and Main Parts Duct Type 1.Wired controller 2.Wireless controller 3.Front board 4.Liquid pipe 5.Gas pipe 6.Drain pipe 7.Binding tape 8.Air outlet 9.Air inlet 10. Electric box 11. Hanger Note: ● The connection pipe, drain pipe, power cord for this unit should be prepared by the user. ●...

  • Page 55: Standard Accessories

    8.2 Standard Accessories Usage Name Appearance Quantity Duct Type Accessories Wired Controller To control the indoor unit. Nut with Washer To fix the hook on the cabinet of the unit. To be used together with the hanger bolt for installing the unit. Washer To be used together with the hanger bolt for installing the unit.

  • Page 56: Installation

    9. Installation 9.1 Installation Preparation location before installation. (8) Indoor unit, power cord, connecting wires should be at 1. Notice on Installation least 1m from television and radio. This is to prevent image (1) When installing an outdoor unit with single or double fans, interference or noise (Even at a distance of 1m, a very hold the handle and then lift it up slowly (Do not touch the strong electric wave may still generate noise).
  • Page 57 3) When outdoor units are installed in rows. (mm) — — ≥100 — — — A,B,C — ≥300 ≥100 ≥100 — — — — ≥100 — — ≥1000 A,B,C,E — ≥300 ≥150 ≥150 — ≥1000 — — — — ≥1000 —...

  • Page 58: Unit Installation

    ● Duct Type: figure. 9.2 Unit Installation (2) Leveling 1. Installation for Duct Type After installing the indoor unit, level detection of the unit shall be conducted. Place the unit horizontally and leave the left and right (1) Preparation for Installing the Indoor Unit side with a downward slope of at least 1/100~1/50 in drainage NOTES! direction, as shown below.
  • Page 59 pipe wall should be able to withstand 6.0MPa. The longer 1) Cut the connection pipe with a pipe cutter. the connection pipe is, the worse cooling and heating 2) The mouth of connection pipe should face downward. performance it has. Remove burrs with the cut surface so that the chips do not ●...
  • Page 60 ● Confirm the tightening torque by referring to the following table (If the screw nut is over-twisted, it may be damaged and cause leakage). ● Check whether gas leakage occurs to the connection pipe and then apply thermal insulation, as shown below. ●...

  • Page 61: Installation Of Drain Pipe

    NOTES! Wait for 10min to see if the system pressure can remain unchanged. If the pressure increase, there may be leakage. ● Before and during operation, use an appropriate refrigerant Slightly open the liquid valve and let some refrigerant go leak detector to monitor the operation area and make sure to the connection pipe to balance the pressure inside and the technicians can be well aware of any potential or actual...
  • Page 62 should be supported and fixed onto the wall. ● Wind the insulating tape from bottom to top. ● The whole pipeline should be wound with insulating tape Unit: mm and fixed onto the wall with saddles. (4) Always use the drain hose which has been insulated properly.
  • Page 63 As shown in the figure, add approximately 1liter of water slowly into the drain pan and check drainage flow during COOL running. The vertical height of the drain hose should be 75mm or less so that it is unnecessary for the drain port to withstand additional force.
  • Page 64 Installation method shall be selected by entirely considering the conditions of buildings, maintenance, etc., as is shown in the following figure. Please refer to below table for the rated ex-factory static pressure of unit. Item External Static Pressure (Pa) Model Supply Air Outlet Return Air Inlet NOTES!

  • Page 65: Electrical Installation

    If ● The design and construction of air duct shall meet related you want to change the power cables, please contact Gree's nationalengineering specifications and requirements. local service center.
  • Page 66 ● Before working, please check whether the indoor and outdoor 3. Connection of Power Cord and Communication units are powered on. Cord (1) For solid wires (as shown below): ● Match the terminal numbers and wire colors with the colors indicated in the indoor unit.

  • Page 67: Check After Installation

    ● The units should comply with applicable local and national ● If you use remote controller to turn off the unit and then rules and regulations on power consumption. immediately turn the unit on again, compressor will need 3min to restart. Even if you press “ON/OFF” button on the remote ●...

  • Page 68: Maintenance

    10. Maintenance 10.1 Error Code List Error Malfunction name AC status Possible causes code 1. Jumper cap is not installed in control panel; 2. Poor contact of jumper cap; Malfunction of jumper cap The complete unit stops operation 3. Jumper cap is damaged; 4.
  • Page 69 Error AC status Possible causes Malfunction name code 1. Temperature sensor is not well connected or damaged; Liquid valve temperature 2. The wire of temperature sensor is damaged, causing short sensor is ON / short- circuit to copper pipe or outer casing; circuited 3.
  • Page 70 Error AC status Possible causes Malfunction name code Cool/Dry: compressor and outdoor 1. Temperature sensor is not connected well or damaged; Outdoor condenser fan stop operation, while indoor fan 2. Temperature sensor wire of outdoor unit is damaged; short temperature sensor is operates;...
  • Page 71 Error AC status Possible causes Malfunction name code Undefined outdoor unit Cool: compressor and outdoor 1. Outdoor ambient temperature exceeds the operation range of unit (eg: less than-20 C or more than 60 C for cooling; more error fan stops operation, while indoor than 30 C for heating);...
  • Page 72 Error AC status Possible causes Malfunction name code DC bus voltage drop Cool/Dry: compressor stops The power voltage is unstable. malfunction operation, while indoor fan operates; Heat: all loads stops operation. Current detection Cool: compressor and outdoor 1. Is the complete unit lacking of refrigerant? malfunction of unit fan stops operation, while indoor 2.

  • Page 73: Procedure Of Troubleshooting

    10.2 Procedure of Troubleshooting 1. Troubleshooting for jumper cap Main check points: (1) jumper cap (2) control board of indoor unit Display shows “C5” Check whether the main Insert the equipped board of controller is inserted with jumper cap jumper cap. Eliminate malfunction Check whether the...

  • Page 74: Communication Malfunction

    2. Communication malfunction Main check points: (1) Connection wire between indoor unit and outdoor unit (2) Wiring inside the unit (3) Communication circuit of control board of indoor unit (4) Communication circuit of control board of outdoor unit Start Check whether the unit has operated normally before the malfunction occurs.
  • Page 75 , over-phase current of compressor 3. IPM protection Main check points: (1) compressor COMP terminal (2) power supply voltage (3) compressor (4) charging amount of refrigerant (5) air inlet and air outlet of indoor/outdoor unit NOTE:The control board as below means the control board of outdoor unit. Put through the power and turn on the unit...
  • Page 76 4. Overload protection of compressor , high discharge temperature, protection of compressor Main check points: (1) electronic expansion valve (2) expansion valve terminal (3) charging amount of refrigerant (4) overload protector NOTE:The control board as below means the control board of outdoor unit. After the unit has been cut off the power for more than 20mins...
  • Page 77 5.Troubleshooting for temperature sensor , , , , Main check points: (1) connection terminal (2) temperature sensor (3) main board Start Check whether the connection terminal between the temperature sensor and the control board is loose or not connected well. Insert the temperature sensor well Eliminate...
  • Page 78 6.High temperature prevention protection ; high power ; system is abnormal Main check points: (1) outdoor temperature (2) fan (3)air inlet and air outlet of indoor/outdoor unit NOTE:The control board as below means the control board of outdoor unit. Overload protection, high temperature prevention protection Normal protection.
  • Page 79 7.Desynchronization diagnosis for compressor Main check point: (1) system pressure (2) power supply voltage NOTE:The control board as below means the control board of outdoor unit. Desynchronization occurs Desynchronization occurs during operation after turning on the unit Check whether the fan Replace the fan Does the outdoor fan operate terminal OFAN is...
  • Page 80 8.Malfunction diagnosis for failure startup Main check points: (1) compressor wire (2) compressor (3) charging amount of refrigerant NOTE:The control board as below means the control board of outdoor unit. Put through the power and turn on the unit The time for stop operation is not enough and the system's high pressure and low pressure is Check whether the compressor unbalanced.
  • Page 81 9. Charging malfunction of capacitor Main check points: (1) wiring board XT (2) reactor NOTE:The control board as below means the control board of outdoor unit. Put through the power to turn on the unit and then wait for 1min Measure the voltage at both ends of electrolytic capacitor with DC voltmeter.
  • Page 82 10. Troubleshooting-motor(indoor fan) doesn't operate Main check points: (1) connection terminal (2) motor (3) control board AP1 of indoor unit (4) blade 10.1 DC motor Display shows "H6" Pull the blade with hand under de-energization status Check whether the Adjust the motor and the blade blade operates smoothly to make the motor operate smoothly.
  • Page 83 10.2 PG motor Display shows "H6" Pull the blade with hand under de- energization status Adjust the motor and Check whether the blade to make the the blade operates blade operate smoothly smoothly. Eliminate malfunction Check whether Insert the feedback the feedback terminal of terminal again indoor fan's motor...
  • Page 84 11. AC overcurrent protection Start The normal fluctuation is about 10% of rated Eliminate malfunction The power voltage is unstable. voltage on the nameplate. The power voltage is too low and the Adjust the power voltage to make it normal. Eliminate malfunction load is too high.

  • Page 85: Troubleshooting For Normal Malfunction

    10.3 Troubleshooting for Normal Malfunction 1. Air Conditioner can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether its due to power failure. If yes, No power supply, or poor connection After energization, operation indicator isnt bright wait for power recovery.
  • Page 86 4. ODU Fan Motor can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Wrong wire connection, or poor Check the wiring status according to circuit Connect wires according to wiring diagram to make connection diagram sure all wiring terminals are connected firmly Measure the capacity of fan capacitor with an Capacity of the ODU fan motor is universal meter and find that the capacity is out of...

  • Page 87: Removal Procedure

    11. Removal Procedure Caution: discharge the refrigerant 11.1 Removal Procedure of Indoor Unit completely before removal. Motor and fan Precondition: The power supply has been disconnected. Step Diagram Operation Procedure ●Use a screwdriver to unscrew the electric box cover. 1.Remove the line ●Remove from the master board the line Main Board connecting to the motor.
  • Page 88 30/36K Step Procedure 1.Remove the cover of electric box ●Turn off the power supply of indoor unit. Use a screwdriver to remove the cover of electric box. Disconnect the motor wire inside the electric box. 2.Remove air return plate, the longitudinal component and air return frame.
  • Page 89 Step Procedure 6.Replace the motor ●Remove the motor from the motor support. ●Use a hex wrench to loosen the screws of fan. ●Remove the fan from the motor. ●Replace with a new motor. 7.Re-install the device in a reverse order of the removal procedure ●Re-install the device in a reverse order of the removal procedure.
  • Page 90 Step Procedure 11.Remove the cover plate. ●Loosen the screws of cover plate and then remove the cover plate. (As shown in the picture, the circle indicates 6 screws of the cover plate). 12.Remove the water tray ●Loosen the screws of water trap. Pull it up and remove it.

  • Page 91: Removal Procedure Of Outdoor Unit

    11.2 Removal Procedure of Outdoor Unit Warning: Before disassembly, please disconnect the power supply. Before disconnection the pipeline, please discharge all the refrigerant according to the local laws and regulations. Step Procedure 1. Before disassembly 2. Remove Cover of Pass Wire and valve cover Cover of Pass Wire Remove the screws fixing Cover of Pass Wire, valve cover and then remove them.
  • Page 92 Step Procedure 4. Remove front panel assy and Rear Grill Remove connection screws connecting the front panel assy and Rear Grill, and then remove the front panel assy and Rear Grill. Rear Grill Front panel 5. Remove right side plate assy and left side plate Rescrew the ground screws, remove the ground wires, loosen the screws fixing terminal board, remove the terminal board, rescrew the screws fixing the right side...
  • Page 93 Step Procedure 7. Remove electric box assy Remove the terminals, lift up and rotate the electrical box assy to the right so that the snaps on the clapboard are removed and the electrical box assy are removed. 8. Remove motor Remove the screws fixing the motor and then remove the motor.
  • Page 94 Step Procedure 10. Remove gas valve and liquid valve Remove the valve support bolck, remove the screws fixing the gas valve and the liquid valve,unsolder the welding joint connecting the gas valve and the liquid valve, remove them. Note: welding joint Discharge the refrigerant completely befor unsoldering;...
  • Page 95 Step Procedure 13. Remove electronic expansion electric expand valve Unsolder the welding joints connecting electronic fitting expansion valve assy then remove the electronic electric expansion expansion valve assy. valve sub-Assy welding joint 14. Remove clapboard assy clapboard assy Remove the screws fixing the clapboard assy and then remove the clapboard assy.

  • Page 96: Before Disassembly

    Step Procedure 1. Before disassembly 2. Remove big handle and valve cover Big handle Remove the screws fixing big handle, valve cover and then remove them. Valve cover 3. Remove top cover Top cover Remove the screws fixing top panel and then remove the top panel.
  • Page 97 Step Procedure 4. Remove front panel assy Remove connection screws connecting the front panel assy with the chassis and the motor support, and then remove the front panel assy. Front panel assy 5. Remove right side plate assy Right side plate assy Rescrew the ground screws, remove the ground wires, loosen the screws fixing terminal board, remove the terminal board, rescrew the screws fixing the right...
  • Page 98 Step Procedure 7. Remove motor support and motor Motor support Remove the screws fixing the motor support and lift the Motor motor support to remove it. Remove the screws fixing the motor and then remove the motor. 8. Remove electric box assy Electric box assy Remove the terminals, lift up and rotate the electrical box assy to the right so that the snaps on the clapboard...
  • Page 99 Step Procedure 10. Remove gas valve and liquid valve Remove the valve support bolck, remove the screws fixing the gas valve and the liquid valve,unsolder the welding joint connecting the gas valve and the liquid valve, remove them. Note: Liquid valve Discharge the refrigerant completely befor unsoldering;...

  • Page 100: Appendix

    Appendix Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit display Fahrenheit Celsius Fahrenheit display Fahrenheit Celsius Fahrenheit display Fahrenheit Celsius temperature（ temperature（ temperature（ F） （ F） （ C） F）...

  • Page 101: Appendix 2: Pipe Expanding Method

    Appendix 2: Pipe Expanding Method Pipe Note: Improper pipe expanding is the main cause of refrigerant leakage.Please expand Pipe cutter the pipe according to the following steps: A:Cut the pip Leaning Uneven Burr ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●...

  • Page 102: Appendix 3: List Of Resistance For Temperature Sensor

    Appendix 3: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 138.10 49.02 18.75 7.97 128.60 44.31 17.14 7.35 115.00 40.09 15.68 6.79 102.90 36.32 14.36 6.28...
  • Page 103 JF00305728 GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070 Tel: (+86-756) 8522219 Fax: (+86-756) 8669426 E-mail: global@cn.gree.com For product improvement, specifications and appearance in this manual are subject to change without prior notice.

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