Table of Contents
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Change for Life
Service Manual
Model: GWC30LB-D3DNA3G
GWC30LB-D3DNA3H
GWH30LB-D3DNA3G
GWC36LB-D3DNA3G
GWC30LB-D3DNA5G
GWH30LB-D3DNA5G
GWH36LB-D3DNA3G
GWC36LB-D3DNA5G
GWH36LB-D3DNA5G
GWC30LB-D3DNB2G
GWH30LB-D3DNB2G
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
GWC36LB-D3DNB2G
GWH36LB-D3DNB2G
(Refrigerant R410A)
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Table of Contents
Troubleshooting
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Summary of Contents for Gree GWC30LB-D3DNA3H
- Page 1 Change for Life Service Manual Model: GWC30LB-D3DNA3G GWC36LB-D3DNB2G GWC30LB-D3DNA3H GWH36LB-D3DNB2G GWH30LB-D3DNA3G (Refrigerant R410A) GWC36LB-D3DNA3G GWC30LB-D3DNA5G GWH30LB-D3DNA5G GWH36LB-D3DNA3G GWC36LB-D3DNA5G GWH36LB-D3DNA5G GWC30LB-D3DNB2G GWH30LB-D3DNB2G GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...
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Page 2: Table Of Contents
Service Manual Table of Contents Part Ⅰ : Technical Information ...............1 1. Summary ........................1 2. Specifications ......................2 2.1 Specification Sheet ......................2 2.2 Operation Characteristic Curve ..................8 2.3 Capacity Variation Ratio According to Temperature ............8 2.4 Noise Curve ........................9 2.5 Cooling and Heating Data Sheet in Rated Frequency .............9 3. - Page 3 Service Manual 9. Troubleshooting ....................43 9.1 Flashing LED of Indoor/Outdoor Unit and Primary Judgement ........43 9.2 How to Check Simply the Main Part ................52 9.3 Troubleshooting for Normal Malfunction .................68 10. Exploded View and Parts List ..............70 10.1 Indoor Unit ........................70 10.2 Outdoor Unit .........................76 11.
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Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: GWC30LB-D3DNA3G/I GWC30LB-D3DNA3H/I GWH30LB-D3DNA3G/I GWC36LB-D3DNA3G/I GWH36LB-D3DNA3G/I GWH30LB-D3DNA5G/I GWC36LB-D3DNA5G/I GWH36LB-D3DNA5G/I GWC30LB-D3DNB2G/I GWH30LB-D3DNB2G/I GWC36LB-D3DNB2G/I GWH36LB-D3DNB2G/I Outdoor Unit: GWC30LB-D3DNA3G/O GWC30LB-D3DNA3H/O GWH30LB-D3DNA3G/O GWC36LB-D3DNA3G/O GWH36LB-D3DNA3G/O Remote Controller: YAN1F1F Technical Information... -
Page 5: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet GWC30LB-D3DNA3G GWH30LB-D3DNA3G Model GWC30LB-D3DNA5G GWH30LB-D3DNA5G GWC30LB-D3DNB2G GWH30LB-D3DNB2G CB171010700 CB171010600 Product Code CB169001200 CB169001100 CB433000100 CB433000200 Rated Voltage 208/230 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Outdoor Cooling Capacity(Min~Max) Btu/h 28000(9485~30026) 28000(9485~30026) Heating Capacity(Min~Max) Btu/h... - Page 6 Service Manual Model of Outdoor Unit GWC30LB-D3DNA3G/O GWH30LB-D3DNA3G/O Outdoor Unit Product Code CB171W10700 CB171W10600 ZHUHAI LANDA COMPERSSOR ZHUHAI LANDA COMPERSSOR Compressor Manufacturer/Trademark CO.LTD. CO.LTD. Compressor Model QXAS-D23zX090 QXAS-D23zX090 Compressor Oil RB68EP RB68EP Compressor Type Rotary Rotary Compressor Locked Rotor Amp (L.R.A) Compressor RLA 13.45 13.45...
- Page 7 Service Manual Model GWC30LB-D3DNA3H Product Code CB171011800 Rated Voltage 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Cooling Capacity(Min~Max) Btu/h 28000(9485~30026) Heating Capacity(Min~Max) Btu/h Cooling Power Input(Min~Max) 2700(350~3900) Heating Power Input(Min~Max) Cooling Power Current 11.5 Heating Power Current...
- Page 8 Service Manual Model of Outdoor Unit GWC30LB-D3DNA3H/O Outdoor Unit Product Code CB171W11800 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPERSSOR CO.LTD. Compressor Model QXAS-D23zX090 Compressor Oil RB68EP Compressor Type Rotary Compressor Locked Rotor Amp (L.R.A) Compressor RLA 13.45 Compressor Power Input 2450 Overload Protector...
- Page 9 Service Manual GWC36LB-D3DNA3G GWH36LB-D3DNA3G Model GWC36LB-D3DNA5G GWH36LB-D3DNA5G GWC36LB-D3DNB2G GWH36LB-D3DNB2G CB171010900 CB171010800 Product Code CB169000900 CB169001000 CB433000300 CB433000400 Rated Voltage 208/230 208/230 Power Supply Rated Frequency Phases Power Supply Mode Outdoor Outdoor Cooling Capacity(Min~Max) Btu/h 33600(7404~35997) 33600(7404~35997) Heating Capacity(Min~Max) Btu/h 34600(14979~35997) Cooling Power Input(Min~Max) 4100 4100(450~4300)
- Page 10 Service Manual Model of Outdoor Unit GWC36LB-D3DNA3G/O(LC) GWH36LB-D3DNA3G/O(LCLH) Outdoor Unit Product Code CB171W10900 CB171W10800 MITSUBISHI ELECTRIC MITSUBISHI ELECTRIC Compressor Manufacturer/Trademark (GUANGZHOU)COMPRESSOR (GUANGZHOU)COMPRESSOR CO. LTD CO. LTD Compressor Model TNB306FPGMC TNB306FPGMC Compressor Oil FV50S FV50S Compressor Type Rotary Rotary Compressor Locked Rotor Amp (L.R.A) 67.00 67.00 Compressor RLA...
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Page 11: Operation Characteristic Curve
Service Manual 2.2 Operation Characteristic Curve Cooling Heating Condition Condition Indoor:DB 70°F Indoor:DB 80°F WB66°F Indoor air flow: Super High Indoor air flow: Super High Pipe length:24 39/64ft Pipe length:24 39/64ft Compressor Frequency(Hz) Compressor Frequency(Hz) 2.3 Capacity Variation Ratio According to Temperature Cooling Heating Conditions... -
Page 12: Noise Curve
Service Manual 2.4 Noise Curve Indoor side noise Outdoor side noise Compressor frequency(Hz) Indoor fan motor rating speed 2.5 Cooling and Heating Data Sheet in Rated Frequency Cooling: Pressure of gas pipe Inlet and outlet pipe Rated cooling Compressor connecting indoor and temperature of heat Fan speed of Fan speed of... -
Page 13: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 53 9/64 13 25/32 29 3/8 Φ2 3/4 Φ2 3/4 11 19/32 3 1/2 Unit:inch 3.2 Outdoor Unit 36 2/9 14 37/64 39 1/2 16 13/16 Unit:inch Technical Information... -
Page 14: Refrigerant System Diagram
Service Manual 4. Refrigerant System Diagram 30K: Cooling only model Outdoor unit Indoor unit Gas pipe side Valve Di s charge Heat exchanger (evaporator) Suction Accumlator Compressor Heat exchanger Liquid pipe (condenser) side Valve Electron Capillary Strainer expansion valve COOLING Cooling and heating model Outdoor unit Indoor unit... - Page 15 Service Manual 36K: Cooling only model Indoor unit Outdoor unit Gas pipe side Valve Di s charge Heat exchanger (evaporator) Suction Accumlator Compressor Heat exchanger Liquid pipe (condenser) side Valve Electron Strainer expansion valve COOLING Cooling and heating model Indoor unit Outdoor unit Gas pipe side...
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Page 16: Electrical Part
Service Manual 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 lover for this model. ●... - Page 17 Service Manual ● Outdoor Unit GWC30LB-D3DNA3G/O GWC30LB-D3DNA3H/O GWC36LB-D3DNA3G/O 63610000470 GWH30LB-D3DNA3G/O GWH36LB-D3DNA3G/O 6361000047001 The above data is subject to change without notice. Please refer to the nameplate of the unit. Technical Information...
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Page 18: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram Indoor Unit ● Top view Name 2 2 2 Power supply live wire Fuse Interface of neutral wire for health function Power supply neutral wire Interface of communication Power switch High-frequency transformer Interface of fan motor Buzzer Interface of display Interface of display... - Page 19 Service Manual Outdoor Unit ● Top view Name Name Name 1 High-frequency transformer T1 6 High pressure protection terminal HPP1 11 Terminal of neutral wire Overload protection terminal of 7 Terminal of 4-way valve 12 Protective tube FU101 compressor OVC-COMP 3 Terminal of temp sensor CN2 8 Electric heater band of chassis HEAT2-L 13 Terminal of ground wire...
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Page 20: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction ON/OFF button MODE button FAN button SWING button TURBO button ▲/ button SLEEP button TEMP button I FEEL button LIGHT button CLOCK button TIMER ON / TIMER OFF button Introduction for icons on display screen Set fan speed I feel Send signal... - Page 21 Service Manual 1. ON/OFF button Press this button can turn on or turn off the air conditioner. After turning on the air conditioner, operation indicator " "on indoor unit’s display is ON (green indicator. The colour is different for different models), and indoor unit will give out a sound. 2.
- 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 Function introduction for combination buttons 1. Energy-saving function Under cooling mode, press "TEMP" and " CLOCK" buttons simultaneously to start up or turn off energy-saving function. When energy-saving function is started up, "SE" will be shown on remote controller, and air conditioner will adjust the set temperature automatically according to ex-factory setting to reach to the best energy-saving effect.
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Page 24: Brief Description Of Modes And Functions
Service Manual 6.2 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 functionis available, for the first energization, if the compressor is at stop before de-energization, the compressor will be started withouta 3-minute lag;... - Page 25 Service Manual When duration of successive heating operation is more than 45 minutes, or accumulated heating time more than 90 minutes, andone of the following conditions is reached, the unit will enter the defrost mode after 3 minutes. a. Toutdoor amb. ≥ 41°F, Toutdoor pipe ≤ 28.4°F; b.
- Page 26 Service Manual c. If Ttube ≥ 136°F, the compressor will run at reduced frequency. d. If Ttube ≥ 144°F, the compressor will stop and the indoor fan will run at preset speed. 2) Heating overload a. If Ttube ≤ 126°F, the unit will return to its original operation state. b.
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Page 27: 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 28 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 29: Installation
Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 5 7/8 inch At least 5 7/8 inch Drainage pipe Installation and Maintenance... - Page 30 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...
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Page 31: Installation Parts-Checking
Service Manual 8.2 Installation Parts-checking 8.4 Electric Connection Requirement Name Name 1. Safety Precaution Indoor unit Sealing gum (1) Must follow the electric safety regulations when installing Outdoor unit Wrapping tape the unit. Support of outdoor (2) According to the local safety regulations, use qualified Connection pipe unit power supply circuit and air switch. - Page 32 Service Manual in the holes. 5. Connect the Pipe of Indoor Unit (3) Fix the wall-mounting frame on the wall with tapping screws (1) Aim the pipe joint at the corresponding bellmouth.(As show (ST4.2X25TA) and then check if the frame is firmly installed by in Fig.5) pulling the frame.
- Page 33 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 Screw...
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Page 34: Installation Of Outdoor Unit
Service Manual 8.6 Installation of Outdoor Unit Refer to the following table for wrench moment of force: 1. Fix the Support of Outdoor Unit(Select it according to Hex nut diameter(inch) Tightening torque(ft·Ibf) the actual installation situation) Φ1/4 11.10~14.75 Φ3/8 20.12~29.50 (1) Select installation location according to the house structure. -
Page 35: 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 36: Wired Controller
Service Manual 8.9 Wired Controller If the product you bought is equipped with wired controller, please refer to the following introductions of wired controller. 1.Displaying Part Fig1.1.1 Outline of wired controller 1.1 LCD Display of Wired Controller Fig.1.1.2 LCD display 1.2 Instruction to LCD Display Description Symbols... - Page 37 Service Manual Lock function Shield functions (Button operation, temperature setting, On/Off operation,Mode setting are SHIELD disabled by the remote monitoring system.) TURBO Turbo function state Memory function (The indoor unit resumes the original setting state after power failure and MEMORY then power recovery) It blinks under on state of the unit without operation of any button SAVE...
- Page 38 Service Manual 3 Operation Instructions 3.1 On/Off Press On/Off to turn on the unit and turn it off by another press. Note: The state shown in Fig.3.1.1 indicates the “Off” state of the unit after power on. The state shown in Fig.3.1.2 indicates the “On” state of the unit after power on.
- Page 39 Service Manual • Timer off setting: Under on-state of the unit without timer setting, if Timer button is pressed, LCD will display xx. Hour,with OFF blinking. In this case, press▲ or ▼ button to adjust timer on and then press Timer to confirm. •...
- Page 40 Service Manual Timer range: 0.5-24hr. Every press of ▲or ▼ will make the set time increased or decreased by 0.5hr. If either of them is pressed continuously, the set time will increase/ decrease by 0.5hr every 0.5s. 3.6 Swing Setting Swing On: Press Function under on state of the unit to activate the swing function.
- Page 41 Service Manual Turn off the unit,without Sleep Press Function repeatedly unitll Press Enter/Cancel to activated the Sleep function activated go to the Sleep setting status function Press Enter/Cancel to cancel this Press Function repeatedly unitll go to the Fig.3.7.1. Sleep Setting setting Sleep function again 3.8 Turbo Setting...
- Page 42 Service Manual 3.9 E-heater Setting E-heater (auxiliary electric heating function): In the Heating mode, E-heater is allowed to be turned on for improvement of effciency. 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 Enter/Cancel to cancel this function.
- Page 43 Service Manual Notes: (1)When the Blow function is activated, if turning off the unit by pressing On/Off or by the remote controller, the indoor fan will run at the low fan speed for 2 min, with “BLOW” displayed on the LCD. While, if the Blow function is deactivated, the indoor fan will be turned off directly.
- Page 44 Service Manual Fig.4.2 Fig.4.2 Fig.4.2 shows the installation steps of the wired controller, but there are some issues that need your attention. (1) Prior to the installation, please firstly cut off the power supply of the wire buried in the installation hole, that is, no operation is allowed with electricity during the whole installation.
- Page 45 Service Manual 5 Errors Display If there is an error occurring during the operation of the system, the error code will be displayed on the LCD, as show in Fig.5.1. If multi errors occur at the same time, their codes will be displayed circularly. Note: In event of any error, please turn off the unit and contact the professionally skilled personnel.
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Page 46: Troubleshooting
Service Manual 9. Troubleshooting 9.1 Flashing LED of Indoor/Outdoor Unit and Primary Judgement 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... - Page 47 Service Manual 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...
- Page 48 Service Manual 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...
- Page 49 Service Manual 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...
- Page 50 Service Manual 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...
- Page 51 Service Manual 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...
- Page 52 Service Manual 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 53 Service Manual Installation and Maintenance...
- Page 54 Service Manual Analysis or processing of some of the malfunction display: 1. Compressor discharge protection Possible reasons: 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 55: How To Check Simply The Main Part
Service Manual 9.2 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 56 Service Manual 2.Malfunction of Blocked Protection of IDU Fan Motor H6 Start Turn the fan blades by hand under power-off condition Adjust the motor and blade Whether the fan blades assembly so that rotor can run can run smoothly? smoothly. Turn unit on to check whether the malfunction is...
- Page 57 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? ● The motor is broken? ●...
- Page 58 Service Manual 4. Malfunction of Overcurrent Protection E5 Main detection points: ● Is the supply voltage unstable with big fluctuation? ● Is the supply voltage too low with overload? ● Hardware trouble? Malfunction diagnosis process: Start Normal fluctuation should be within 10 % Is malfunction Is the supply voltage unstable of the rated voltage on the nameplate...
- Page 59 Service Manual 5. 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? ● The zero-cross detectioncircuit of the mainboard is defined abnormal? Malfunction diagnosis process: Start Turn power off for 1minute,the turn...
- Page 60 Service Manual 6.Malfunction of communication E6 Main detection points: ● Check if the connection wire and the built-in wiring of indoor and outdoor unit are connected well and without damage; ● If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged? Malfunction diagnosis process: Start...
- Page 61 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. 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...
- Page 62 Service Manual (2) IPM Protection, Out-of-step Fault, Compressor Phase Overcurrent (AP1 below refers to the outdoor control panel) Main check points: If the connection between control panel AP1 and compressor COMP is secure? If loose? If the connection is in correct order? If the voltage input of the machine is within normal range? (Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT) If the compressor coil resistance is normal? If the insulation of compressor coil against the copper tube is in good condition?
- Page 63 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 is good? Fault diagnosis process: Overheat and high temperature protection...
- Page 64 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 65 Service Manual (5) Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: Whether the system pressure is too high? Whether the input voltage is too low? Fault diagnosis process: Out of step occurs in Out of step occurs once the operation...
- Page 66 Service Manual (6)Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board) Mainly detect: Wether the PMV is 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 67 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 68 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 69 Service Manual (9) 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 70 Service Manual (10) High-pressure Protection High-pressure protection Use pressure gauge to Measure if the pressure switch Replace the mainboard of measure if the pressure is is normal outdoor unit really high? Check if the operation mode of Set the correct operation Replace the pressure switch indoor unit is set properly? mode...
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Page 71: Troubleshooting For Normal Malfunction
Service Manual 9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner Can't be Started up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether it's due to power failure. If yes, No power supply, or poor After energization, operation indicator isn’t bright wait for power recovery. - Page 72 Service Manual 4. ODU Fan Motor Can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Connect wires according to wiring diagram to Wrong wire connection, or poor Check the wiring status according to circuit make sure all wiring terminals are connected connection diagram firmly...
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Page 73: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit Installation and Maintenance... - Page 74 Service Manual Part Code Description GWC30LB-D3DNA3G/I GWC30LB-D3DNA3H/I GWH30LB-D3DNA3G/I Product Code CB171N10700 CB171N11800 CB171N10600 Receiver Window 22432164 22432164 22432164 Front Panel 20012490S 20012490S 20012490S Stand bar 24212120 24212120 24212120 Filter Sub-Assy 11122106 11122106 11122106 Front Case Sub-Assy 20022159 20022159 20022159 Upper Guide Louver...
- Page 75 Service Manual Part Code Description GWC36LB-D3DNA3G/I GWH36LB-D3DNA3G/I Product Code CB171N10700 CB171N10600 Receiver Window 22432164 22432164 Front Panel 20012490S 20012490S Stand bar 24212120 24212120 Filter Sub-Assy 11122106 11122106 Front Case Sub-Assy 20022159 20022159 Upper Guide Louver 10512166 10512166 Lower guide louver 10512167 10512167 Axile Bush...
- Page 76 Service Manual Part Code Description GWC36LB-D3DNA5G/I GWH36LB-D3DNA5G/I Product Code CB169N00900 CB169N01000 Receiver Window 22432164 22432164 Front Panel 20012712 20012712 Stand bar 24212120 24212120 Filter Sub-Assy 11122106 11122106 Front Case Sub-Assy 20022159 20022159 Upper Guide Louver 10512166 10512166 Lower guide louver 10512167 10512167 Axile Bush...
- Page 77 Service Manual Part Code Description GWC30LB-D3DNB2G/I GWH30LB-D3DNB2G/I GWH30LB-D3DNA5G/I Product Code CB433N00100 CB433N00200 CB169N01100 Receiver Window 22432187 Front Panel 20000300022S 20000300022S 20012661S Stand bar 2421212001 2421212001 24212120 Filter Sub-Assy 11122106 11122106 11122106 Front Case Sub-Assy 2002215801 2002215801 20022159 Upper Guide Louver 1051216601 1051216601 10512166...
- Page 78 Service Manual Part Code Description GWC30LB-D3DNA5G/I GWC36LB-D3DNB2G/I GWH36LB-D3DNB2G/I Product Code CB169N01200 CB433N00300 CB433N00400 Receiver Window 22432187 Front Panel 20012661S 20000300022S 20000300022S Stand bar 24212120 2421212001 2421212001 Filter Sub-Assy 11122106 11122106 11122106 Front Case Sub-Assy 20022159 2002215801 2002215801 Upper Guide Louver 10512166 1051216601 1051216601...
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Page 79: Outdoor Unit
Service Manual 10.2 Outdoor Unit GWC30LB-D3DNA3G/O GWC30LB-D3DNA3H/O GWC36LB-D3DNA3G/O 10 11 12 Installation and Maintenance... - Page 80 Service Manual Product Code Description GWC30LB-D3DNA3G/O GWC30LB-D3DNA3H/O GWC36LB-D3DNA3G/O Product Code CB171W10700 CB171W11800 CB171W10900 Front Grill 01473050 01473050 01473050 Cabinet 0143500401P 0143500401P 0143500401P Front Side Plate 01303249P 01303249P 01303249P Axial Flow Fan 10335014 10335014 10335014 Chassis Sub-assy 0280310101P 0280310101P 0280302601P Compressor Gasket...
- Page 81 Service Manual GWH30LB-D3DNA3G/O GWH36LB-D3DNA3G/O 11 12 13 14 15 Installation and Maintenance...
- Page 82 Service Manual Part Code Description GWH30LB-D3DNA3G/O GWH36LB-D3DNA3G/O Product Code CB171W10600 CB171W10800 Front Grill 01473050 01473050 Cabinet 0143500401P 0143500401P Front Side Plate 01303249P 01303249P Axial Flow Fan 10335014 10335014 Drainage Plug 06813401 06813401 Chassis Sub-assy 02803101P 02803026P Drainage Connecter 06123401 06123401 Compressor Gasket 76715022 76710207...
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Page 83: Removal Procedure
Service Manual 11. Removal Procedure Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the refrigerant 11.1 Removal Procedure of Indoor Unit completely before removal. Steps Procedure 1.Before disassembly of the unit Axonometric drawing for the complete unit. - Page 84 Service Manual Steps Procedure B2 panel 3.Remove display A3/A5 panel display Remove screws fixing display, and then remove the display. 4.Remove panel clasps Pull the clasps at both sides slightly, and then remove the panel. panel 5.Remove horizontal louver Remove the axial bush on the horizontal louver, and then remove the horizontal louver.
- Page 85 Service Manual Steps Procedure 6.Remove top cover of electric box Remove screws fixing the top cover of electric box. screw Remove the top cover of electric box. top cover of electric box screw cap 7.Remove front case Remove the screw caps on front case. screw Remove screws connecting the front case.
- Page 86 Service Manual Steps Procedure 8.Remove earthing wire screw Remove earthing screws, and then remove the earthing wire. 9.Remove electric box cover clasp Loosen clasps at the left side of electric box. Loosen clasps on the right side of electric box. clasp electric box cover Remove electric box cover.
- Page 87 Service Manual Steps Procedure 10.Remove temperature sensor Pull out the indoor temperature sensor. temperature sensor 11.Remove electric box Pull out 6 sockets on PCB board. Pull out two screws on electric box. screw electric box Remove the electric box. Installation and Maintenance...
- Page 88 Service Manual Steps Procedure 12.Remove water tray water tray Pull the water tray upwards, and then remove the water tray. 13.Remove connection pipe between indoor and outdoor units Separate the connection pipe between indoor and outdoor units. connection position for indoor and outdoor units' connection pipe 14.Remove pipe-stopping plate Remove two screws on pipe-stopping plate for indoor unit, and then remove the pipe-stopping...
- Page 89 Service Manual Steps Procedure 16.Remove evaporator screw Remove screws between evaporator and bottom case. Turn over the indoor unit and adjust the pipe line to the position as shown by the broken line. Lift up the evaporator, and then remove the evaporator.
- Page 90 Service Manual Steps Procedure 18.Remove cross flow blade and motor blade motor Remove screws fixing cross flow blade and motor. Remove the motor sub-assy. Separate two cross flow blade. Installation and Maintenance...
- Page 91 Service Manual Steps Procedure 19.Remove cushion rubber Remove the cushion rubber on cross flow blade. cushion rubber Remove the cushion rubber from the base. Installation and Maintenance...
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Page 92: Removal Procedure Of Outdoor Unit
Service Manual 11.2 Removal Procedure of Outdoor Unit Note: Take heat pump unit for example. Steps Procedure 1. Remove big handle,valve cover and top cover Remove the screw connecting the big handle and right side plate, and then remove the big handle. Remove the screw connecting the valve cover and right side plate, and then remove the valve cover. - Page 93 Service Manual Steps Procedure 4.Remove grille and panel Twist off the screws connecting the grille and panel, and then remove the grille. Twist off the screws connecting the panel, chassis and motor support with screwd-river, and then remove the panel. grille panel 5.Remove right side plate...
- Page 94 Service Manual Steps Procedure 7.Remove electric box electric box Twist off the screws on electric box, cut off the tieline with scissors or pliers, pull out the wiring terminal, pull it upwards to remove the electric box. Twist off the screws on electric box (fireproofing) electric box with screwdriver, and then remove the electric (fireproofing)
- Page 95 Service Manual Steps Procedure 9.Remove motor support Twist off the tapping screws fixingthe motor support, pull it upwardsand then remove the motor support. motor support 10.Remove isolation sheet Twist off the screws connecting isolation sheet and end plate of condenser and chassis, and then remove the isolation sheet.
- Page 96 Service Manual Steps Procedure 12.Remove gas valve and liquid valve Twist off the 2 bolts fixing the valve sub-assy. Unsolder the soldering joint between gas valve and air-return pipe and then remove the gas valve.(note: when unsoldering the soldering joint, wrap the gas valve with wet cloth completely to gas valve avoid the damage to valve, and release all...
- Page 97 Service Manual Steps Procedure 15.Remove left side plate Twist off the screws connecting the left side plate and chassis with screwdriver, and then remove the left side plate. left side plate 16.Remove chassis and condenser Pull it upwards to separate the chassis and condenser.
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Page 98: 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 99: 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 100: 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.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -2.2 138.1 18.75 138.2 3.848 208.4 1.071 -0.4 128.6 69.8 17.93 3.711 210.2 1.039... - Page 101 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -2.2 181.4 25.01 138.2 5.13 208.4 1.427 -0.4 171.4 69.8 23.9 4.948 210.2 1.386 162.1 71.6 22.85 141.8 4.773 1.346 153.3 73.4...
- Page 102 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor(50K) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) Temp.( Resistance(kΩ) -20.2 853.5 120.2 18.34 190.4 4.754 -18.4 799.8 51.8 93.42 17.65 192.2 4.609 -16.6 53.6 89.07 123.8 16.99 4.469 -14.8 703.8 55.4 84.95 125.6 16.36...
- Page 103 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 For product improvement, specifications and appearance in this manual are subject to change without prior notice.
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