Table of Contents
Troubleshooting
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Summary of Contents for Gree GWH18KG-K3DNA5G
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Page 1: Service Manual
Change for Life Service Manual Models: GWH18KG-K3DNA5G GWH18KG-K3DNA6G GWH18KG-K3DNA9G GWH18KG-K3DNB2G GWH24KG-K3DNA5G GWH24KG-K3DNA6G GWH24KG-K3DNA9G GWH24KG-K3DNB2G (Refrigerant R410A) GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI... -
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 ..................6 2.3 Capacity Variation Ratio According to Temperature ............6 2.4 Cooling and Heating Data Sheet in Rated Frequency .............7 2.5 Noise Curve ........................7 3. - Page 3 Service Manual 9. Maintenance ......................35 9.1 Malfunction Display of Indoor Unit ..................35 9.2 Procedure of Troubleshooting ..................37 9.3 Troubleshooting for Normal Malfunction .................54 10. Exploded View and Parts List ..............56 10.1 Indoor Unit ........................56 10.2 Outdoor Unit .........................62 11. Removal Procedure ..................66 11.1 Removal Procedure of Intdoor Unit ................66 11.2 Removal Procedure of Outdoor Unit ................72...
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Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit GWH18KG-K3DNA5G/I GWH24KG-K3DNA5G/I GWH18KG-K3DNA6G/I GWH24KG-K3DNA6G/I GWH18KG-K3DNB2G/I GWH24KG-K3DNB2G/I GWH18KG-K3DNA9G/I GWH24KG-K3DNA9G/I ON/OFF Outdoor Unit GWH18KG-K3DNA6G/O GWH24KG-K3DNA6G/O Remote Controller YB1F2(XFAN) AUTO HEALTH X-FAN HUMIDITY FILTER TURBO HOUR ON/OFF ON/OFF MODE X-FAN TEMP TIMER... -
Page 5: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet Parameter Unit Value Value 1.GWH18KG-K3DNA5G 1.GWH18KG-K3DNA6G Model 2.GWH18KG-K3DNA6G 2.GWH18KG-K3DNA9G 3.GWH18KG-K3DNB2G 1.CB146037401 1.CB146036000 Product Code 2.CB146036001 2.CB146037300 3.CB409002501 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity(Min~Max) - Page 6 Service Manual Outdoor Unit Model GWH18KG-K3DNA6G/O GWH18KG-K3DNA6G/O Outdoor Unit Product Code CB146W36000 CB146W36001 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer CO.,LTD CO.,LTD Compressor Model QXA-B141zF030A QXA-B141zF030A Compressor Oil 68EP 68EP Compressor Type Rotary Rotary Compressor LRA. Compressor RLA Compressor Power Input 1440 1440 1NT11L-6233 or KSD115...
- Page 7 Service Manual Parameter Unit Value Value 1.GWH24KG-K3DNA5G 1.GWH24KG-K3DNA6G Model 2.GWH24KG-K3DNA6G 2.GWH24KG-K3DNA9G 3.GWH24KG-K3DNB2G 1.CB146037701 1.CB146035900 Product Code 2.CB146035901 2.CB146037200 3.CB409002601 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity(Min~Max) 6450(2530~6550) 6450(2530~6550) Heating Capacity(Min~Max) 7000(2530~7600) 7000(2530~7600) Cooling Power Input(Min~Max) 2180(600~2650)
- Page 8 Service Manual Outdoor Unit Model GWH24KG-K3DNA6G/O GWH24KG-K3DNA6G/O Outdoor Unit Product Code CB146W35900 CB146W35901 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer CO.,LTD CO.,LTD Compressor Model QXA-B141zF030A QXA-B141zF030A Compressor Oil 68EP 68EP Compressor Type Rotary Rotary Compressor LRA. Compressor RLA Compressor Power Input 1440 1440 1NT11L-6233 or KSD115...
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Page 9: Operation Characteristic Curve
Service Manual 2.2 Operation Characteristic Curve Cooling Heating 220V Conditions 220V Indoor: DB27°C/WB19°C Outdoor: DB35°C/WB24°C Indoor air flow: High Pipe length: 5m 230V 230V 240V Conditions Indoor: DB20°C/WB15°C 240V Outdoor: DB7°C/WB6°C Indoor air flow: High Pipe length: 5m 10 20 30 40 50 60 70 80 90 100 Compressor speed (rps) Compressor speed (rps) 2.3 Capacity Variation Ratio According to Temperature... -
Page 10: Cooling And Heating Data Sheet In Rated Frequency
Service Manual 2.4 Cooling and Heating Data Sheet in Rated Frequency Cooling: Rated cooling Pressure of gas pipe Inlet and outlet pipe Compressor condition(°C) connecting indoor and temperature of heat Fan speed of Fan speed of Model frequency (DB/WB) outdoor unit exchanger indoor unit outdoor unit... -
Page 11: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 120.5 548.5 Φ55 Φ55 41.3 41.3 54.5 120.5 548.5 18K Unit Φ55 Φ55 Φ55 Φ55 41.3 41.3 54.5 24K Unit Φ70 Φ70 Φ55 Φ55 unit:mm Models 1008 Φ70 Φ70 Technical Information... -
Page 12: Outdoor Unit
Service Manual 3.2 Outdoor Unit 18K Unit 24K Unit 1000 Unit:mm Technical Information... -
Page 13: Refrigerant System Diagram
Service Manual 4. Refrigerant System Diagram Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Suction Accumlator exchanger Compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Electric Capillary Strainer expand valve COOLING HEATING Connection pipe specification: Liquid pipe:1/4"... -
Page 14: Electrical Part
Yellow/Green Black Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ● Indoor Unit GWH18KG-K3DNA5G/I GWH18KG-K3DNA6G/I GWH18KG-K3DNB2G/I GWH24KG-K3DNA5G/I GWH24KG-K3DNA6G/I GWH24KG-K3DNB2G/I TUBE TEMP. ROOM TEMP. SENSOR SENSOR FAN MOTOR... -
Page 15: Outdoor Unit
Service Manual GWH18KG-K3DNA9G/I GWH24KG-K3DNA9G/I ● Outdoor Unit GWH18KG-K3DNA6G/O(CB146W36000) GWH24KG-K3DNA6G/O(CB146W35900) OVERLOAD PROTECTOR WARNING Please don't touch any terminal COMP. when the voltage of terminal YEGN P(DC+) and N(DC-) at AP1 is WH WH COMP higher than 30V to prevent the MAGNETIC risk of electric shock ! RING BU YE... - Page 16 Service Manual GWH18KG-K3DNA6G/O(CB146W36001) GWH24KG-K3DNA6G/O(CB146W35901) OVERLOAD PROTECTOR WARNING Please don't touch any terminal COMP. when the voltage of terminal YEGN P(DC+) and N(DC-) at AP1 is COMP higher than 30V to prevent the MAGNETIC risk of electric shock ! RT1 RT2 RT3 RING L3 L3 YEGN...
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Page 17: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram Indoor Unit ● Top view Name Interface of health function neutral wire Interface of live wire Interface of neutral wire Capacitor of fan motor Fuse Interface of PG motor Interface of health function live wire Auto button Up &... - Page 18 Service Manual Outdoor Unit ● Top view Name Terminal of compressor overload protection Terminal of temperature sensor Terminal of electronic expansion valve 4 Terminal of outdoor fan 5 Terminal of 4-way valve Terminal of compressorelectric heating Terminal of chassis electric heating Terminal of indoor unit and outdoor unit communication...
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Page 19: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on remote controller ON/OFF Button AUTO HEALTH X-FAN MODE Button HUMIDITY FILTER +/- Button TURBO HOUR FAN Button ON/OFF Button Button ON/OFF MODE HEALTH SAVE Button X-FAN Button TEMP Button TIMER Button X-FAN TEMP... - Page 20 Service Manual 1.ON/OFF button Press this button can turn on or turn off the air conditioner. After turning on the unit,operation indicator " " on indoor unit is ON (green indicator. Color may be differ-ent for different models)and indoor unit gives out a sound. 2.MODE button Press this button can select your required operation mode.
- Page 21 Service Manual If the unit is turned off during swing operation,the louver will stop at present position. When selecting " " with remote controller, it is the fixed position swing. Horizontal louver of air conditioner will stop at that position as shown by the icon to swing. When selecting "( )"...
- Page 22 Service Manual Function introduction for combination buttons Child lock function Press "+" and "-" buttons simultaneously can turn on or turn off child lock function. When child lock function is started up, " " icon will be displayed on remote controller. If operate remote controller " " icon will flash three times, while remote controller won’t send signal. Switchover function for temperature display After turning off the unit by remote controller, press "-"...
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Page 23: Brief Description Of Modes And Functions
Service Manual 6.2 Brief Description of Modes and Functions Indoor Part Temperature Parameter ◆ Room setting temperature (Tpreset) ◆ Room ambient temperature (Tamb.) (temperature sensor :15K, partial pressure resistance:15K) ◆ Surface temperature of copper pipe for indoor heat exchanger (Tindoor tube) (temperature sensor: 20K, partial pressure resistance: 20K) 1. - Page 24 Service Manual remote controller. ② Only when the remote control signal is switched to indoor ambient temperature display status from other display status, controller will display the indoor ambient temperature for 3s and then turn back to display the setting temperature. ③...
- Page 25 Service Manual Timer OFF If timer OFF is set at unit OFF, the system will keep standby status. If timer OFF is set at unit ON, upon OFF time reaches the unit will stop operation. (6) Blow Function Blow function can be set in cooling and dry mode. (7) Indoor Fan Control Indoor fan can be set at super-high, high, medium or low.
- Page 26 Service Manual Outdoor Part 1. Input Parameter Compensation and Calibration ① Check the input parameter compensation function As the instruction feature of split unit, concerning the comfortable, in heating mode, the indoor ambient temperature of compressor stopping time is higher than preset temperature. ②...
- Page 27 Service Manual ① The frequency of compressor will be controlled with the relationship of ambient temperature and preset temperature and changing speed of ambient temperature; ② Start the compressor after starting cooling, heating, dry operations, and the outdoor fan start for 5s; ③...
- Page 28 Service Manual operation automatically and error code will be displayed successively. Only press ON/OFF button can resume the operation. During operation process, if compressor operates for more than 10min, times of stop operation due to discharge protection will be cleared. Malfunction and malfunction times will be cleared immediately when turning off the unit, or switching to fan mode.
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Page 29: 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 30 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 31: Installation
Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 15cm At least 15cm Drainage pipe Installation and Maintenance... - Page 32 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 33: Installation Parts-Checking
Service Manual 8.4 Electric Connection Requirement 8.2 Installation Parts-checking 1. Safety Precaution Name Name (1) Must follow the electric safety regulations when installing Indoor unit Sealing gum the unit. Outdoor unit Wrapping tape (2) According to the local safety regulations, use qualified Support of outdoor power supply circuit and air switch. - Page 34 Service Manual in the holes. Left Right (3) Fix the wall-mounting frame on the wall with tapping screws (ST4.2X25TA) and then check if the frame is firmly installed by pulling the frame. If the plastic expansion particle is loose, Wall Wall Mark in the middle of it Level meter...
- Page 35 Service Manual Note: Note: (1) All wires of indoor unit and outdoor unit should be (1) Add insulating pipe in the indoor drain hose in order to connected by a professional. prevent condensation. (2) If the length of power connection wire is insufficient, please (2) The plastic expansion particles are not provided.
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Page 36: Installation Of Outdoor Unit
Service Manual 4. Connect Indoor and Outdoor Pipes Outdoor Indoor (1) Remove the screw on the handle and valve cover of outdoor Fig.17 Wall pipe Sealing gum unit and then remove the handle and valve cover.(As show in Fig.21) Upper hook (2) Remove the screw cap of valve and aim the pipe joint at the bellmouth of pipe.(As show in Fig.22) Liquid pipe... -
Page 37: Vacuum Pumping And Leak Detection
Service Manual 2. Leakage Detection The drain hos (1) With leakage detector: can't raise upwards Check if there is leakage with leakage detector. (2) With soap water: Wall If leakage detector is not available, please use soap water for leakage detection. Apply soap water at the suspected position Fig.25 and keep the soap water for more than 3min. -
Page 38: Maintenance
Service Manual 9. Maintenance 9.1 Malfunction Display of Indoor Unit 1. Malfunction display requirement When there are several malfunctions, they will be displayed circularly. 2. Malfunction display method (1) Hardware malfunction: immediate display; refer to “malfunction display table”; (2) Operation state: immediate display; refer to “malfunction display table”; (3) Other malfunctions: it is displayed after the compressor stops for 200s;... - Page 39 Service Manual ●Discharging method (1) remove the inverter cover(Outdoor Unit) Inverter cover P.C.board (Soldered surface) (2)As shown below,connect the discharge resistance(approx.100Ω20W)or plug of the sold ering iron to voltage between + - terminals of the electrolytic capacitor on PC Board for 30s, and then peformedischarging. NOTE: A large-capacity electrolytic capacitor is used in the outdoor unit controller(inverter).Therefore,if the power supply is turned off,charge(charging voltage DC280V to 380V)remains and disc harging takes a lot of time..
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Page 40: Procedure Of Troubleshooting
Service Manual 9.2 Procedure of Troubleshooting (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 41 Service Manual (2) Malfunction of Blocked Protection of IDU Fan Motor (H6) Main detection points: ● SmoothlyIs the control terminal of PG motor connected tightly? ● SmoothlyIs the feedback interface of PG motor connected tightly? ● The fan motor can't operate? ●...
- Page 42 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 43 Service Manual (4) 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 44 Service Manual (4) Communication malfunction (E6) Troubleshooting for E6 malfunction Disconnect power and check if the connection wire of indoor and outdoor units and the built-in wire of electric box are correctly connected. Connect the wire properly according Is malfunction Correct connection? to the wiring eliminated?
- Page 45 Service Manual Outdoot Unit (1) Malfunction of Desynchronizing of Compressor (H7) Main check point: Whether the system pressure is too high? Whether the electronic expansion valve can work normally? Whether the radiation for the unit is in good condition? Check flow chart: Desynchronizing malfunction occurs after de-energizing and turning on the unit...
- Page 46 Service Manual Desynchronizing malfunction occurs during operation process Check whether Whether the outdoor fan can Replace fan capacitor the fan terminal is operate normally? connected well Improve the radiation circumstances for the Whether the radiation for the unit (such as clean heat unit is in good condition? Replace outdoor fan exchanger, improve...
- Page 47 Service Manual (2) Malfunction of Temperature Sensor (F3/F4/F5) Main check point: Whether the temperature sensor is damaged? Whether the terminal of temperature sensor is loose or not connected? Whether the main board is damaged? Check flow chart: Start the troubleshooting for temperature sensor Check the connection between temperature sensor and wiring...
- Page 48 Service Manual (3) Malfunction of Overload Protection of Compressor (H3) and Discharge High-temperature Protection of Compressor (E4) Main check point: Whether the electronic expansion valve is connected well and whether it’s damaged? Whether the refrigerant is leaking? Whether the overload protector is damaged? Start Check flow chart: Whether the overload protector is...
- Page 49 Service Manual (4) Charging Malfunction of Capacitor (PU) Main check point: Whether input power is normal? Main board is damaged. Check flow chart: Energize and turn on the unit; wait for 1 min Measure the voltage at both ends of big electrolytic capacitor with the DC notch of universal meter There is malfunction for the...
- Page 50 Service Manual (5) Malfunction of Overload Protection (E8) Main check point: Whether the tube temperature sensor is normal? Whether the outdoor ambient temperature is within the normal range? Whether indoor fan and outdoor fan can operate normally? Whether radiation environment inside or outside the unit is good? Check flow chart: Start Replace the tube temperature...
- Page 51 Service Manual (6) Malfunction of IPM Protection (H5) Main check point: Whether input voltage is within the normal range? Whether wires of compressor are connected reliably, tightly or correctly? Whether the resistance of compressor coil is normal? Whether the insulation between compressor coil and copper pipe is in good condition? Whether the unit is overloading? Whether the radiation for the unit is in good condition? Whether the volume of charged refrigerant is proper?
- Page 52 Service Manual (7) Malfunction of PFC Protection (HC) Main check point: Whether power supply is normal? Check flow chart: Start Check whether power supply is normal Turn on the unit again after the power is Is power abnormal? resumed Replace main board of outdoor unit Installation and Maintenance...
- Page 53 Service Manual (8) Malfunction of Communication (E6) Main check point: Check whether connection wires between indoor unit and outdoor unit and wiring inside the unit are connected well? Check the main board of indoor unit or main board of outdoor unit is damaged? Check flow chart: Communication malfunction De-energize the unit and then...
- Page 54 Service Manual (9) Malfunction of Failure Start-up of Compressor (LC) Main check point: Whether the compressor wires are connected correctly? Whether the stop time for compressor is enough? Whether compressor is damaged? Whether the refrigerant-charging volume is superfluous? Check flow chart: Energize and turn on the unit Whether the stop time for...
- Page 55 Service Manual (10) 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 56 Service Manual (9) Other Malfunction 1.IPM module temperature sensor is open-circuited(P7) Hardware of main board is damaged. Please replace main board. 2.Overheating protection of IPM module(P8) ① Poor radiation because the module radiator is dirty; ② IPM module is damaged; ③...
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Page 57: 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 58 Service Manual 4. Air Conditioner is Leaking Possible causes Discriminating method (air conditioner status) Troubleshooting Eliminate the foreign objects inside the drain Drain pipe is blocked Water leaking from indoor unit pipe Drain pipe is broken Water leaking from drain pipe Replace drain pipe Water leaking from the pipe connection place of Wrapping is not tight...
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Page 59: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit GWH18KG-K3DNA5G/I GWH18KG-K3DNA6G/I GWH18KG-K3DNB2G/I GWH18KG-K3DNA9G/I AUTO HEALTH X-FAN HUMIDITY FILTER TURBO HOUR ON/OFF ON/OFF MODE X-FAN TEMP TIMER TURBO SLEEP LIGHT Installation and Maintenance... - Page 60 Service Manual Part Code Description GWH18KG-K3DNA6G/I GWH18KG-K3DNB2G/I (Cold Plasma) (Cold Plasma) Product Code CB146N36000 CB409N02500 Front Panel 20012495S 20012731P Filter Sub-Assy 11122104 11122104 Screw Cover 242520041 242520041 Front Case Assy 20012497 20012497 Guide Louver 10512140 10512140 Air Louver 10512160 10512160 Helicoid tongue 26112232 26112232...
- Page 61 Service Manual Part Code Description GWH18KG-K3DNA5G/I GWH18KG-K3DNA9G/I (Cold Plasma) Product Code CB146N37300 CB146N37400 Front Panel 20012553S 20012473S Filter Sub-Assy 11122104 11122104 Screw Cover 242520041 242520041 Front Case Assy 20012497 20012497 Guide Louver 10512140 10512140 Air Louver 10512160 10512160 Helicoid tongue...
- Page 62 Service Manual GWH24KG-K3DNA5G/I GWH24KG-K3DNA6G/I GWH24KG-K3DNA9G/I GWH24KG-K3DNB2G/I AUTO HEALTH X-FAN HUMIDITY FILTER TURBO HOUR ON/OFF ON/OFF MODE X-FAN TEMP TIMER TURBO SLEEP LIGHT Installation and Maintenance...
- Page 63 Service Manual Part Code Description GWH24KG-K3DNA6G/I GWH24KG-K3DNB2G/I (Cold Plasma) (Cold Plasma) Product Code CB146N35900 CB409N02600 Front Panel 20012502S 20012739S Filter Sub-Assy 11122091 11122091 Screw Cover 24252016 24252016 Front Case Assy 20012514 20012514 Air Louver 10512139 10512139 Helicoid tongue 26112229 26112229 Left Axile Bush 10512037 10512037...
- Page 64 Service Manual Part Code Description GWH24KG-K3DNA5G/I GWH24KG-K3DNA9G/I (Cold Plasma) Product Code CB146N37200 CB146N37700 Front Panel 20012546S 20012461S Filter Sub-Assy 11122091 11122091 Screw Cover 24252016 24252016 Front Case Assy 20012514 20012514 Air Louver 10512139 10512139 Helicoid tongue 26112229 26112229 Left Axile Bush 10512037 10512037 Rear Case assy...
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Page 65: Outdoor Unit
Service Manual 10.2 Outdoor Unit GWH18KG-K3DNA6G/O Installation and Maintenance... - Page 66 Service Manual Part Code Description GWH18KG-K3DNA6G/O GWH18KG-K3DNA6G/O Product Code CB146W36000 CB146W36001 Front Grill 22413025 22413025 Front Panel 01535013P 01535013P Chassis Sub-assy 02803207P 02803323P Drainage Connecter 06123401 06123401 Compressor and Fittings 00105249G 00105249G 4-Way Valve Assy 03073158 03073158 Capillary Sub-assy 03163307 03163307 Right Side Plate 0130509402P...
- Page 67 Service Manual GWH24KG-K3DNA6G/O 9 10 11 12 13 14 15 Installation and Maintenance...
- Page 68 Service Manual Part Code Description GWH24KG-K3DNA6G/O GWH24KG-K3DNA6G/O Product Code CB146W35900 CB146W35901 Front Grill 22413026 22413026 Cabinet 01435004P 01435004P Left Handle 26233053 26233053 Front Side Plate 01305086P 01305086P Drainage Connecter 06123401 06123401 Chassis Sub-assy 02803255P 0280325501P Drainage hole Cap 06813401 06813401 Gas-liquid Separator Assy 07225017 07225017...
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Page 69: 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 completely before removal. 11.1 Removal Procedure of Intdoor Unit Points Procedure Steps 1. External features If ON/OFF button is kept pushing ■... - Page 70 Service Manual Points Procedure Steps 3. Opening and shutting front panel Draw out the axial bush. Bend the horizontal louver slightly and then remove it. Support the front panel by one ■ hand, while remove the rotation axis at the upper center by the other hand.
- Page 71 Service Manual Points Steps Procedure 4. Opening and closing of service cover Remove a service cover mounting screw. Open service cover upward. A switch for field setting is ■ not provided in particular. screws 5. Removal of front grille assembly Remove the 5 screws, in the right and the left, ■...
- Page 72 Service Manual Points Procedure Steps 6. Remove electrical box Disconnect the cable Pay attention to the direction ■ clamp of the retainer of the thermistor so that the retainer will not touch the harness (same as the existing models.) Remove Temperature Heat exchanger thermistor Sensor;...
- Page 73 Service Manual Points Procedure Steps 7. Remove piping fixture. Remove Pipe Clamp Auxiliary piping Piping fixture Auxiliary piping Adjust the pipeline slightly Loosen the screws, Heat exchanger in the right and the left, which fix the Evaporator Assy. Remove Evaporator Assy Installation and Maintenance...
- Page 74 Service Manual Points Procedure Steps 8. Remove the pressure plate of motor Pressure plate of motor Remove screws of motor press plate and then remove the motor press plate. 9. Remove shaft cushion rubber base Shaft cushion rubber base Remove motor, blade and shaft cushion rubber base.
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Page 75: Removal Procedure Of Outdoor Unit
Service Manual 11.2 Removal Procedure of Outdoor Unit Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the refrigerant GWH18KG-K3DNA6G/O completely before removal. Steps Procedure 1. Remove top panel Twist off the screws used for fixing the handle and v alve cover , pull the handle and v alve cover up ward to remove it. - Page 76 Service Manual Steps Procedure Remove the 5 screws connecting the panel with the chassis and the motor support, and then remove the panel. Remove the 6 screws connecing the left side plate and right side plate and then remove rear grill rear grill panel 3.
- Page 77 Service Manual Steps Procedure 4. Remove fan motor axial flow blade Remove the nuts fixing the blade and then remove the axial flow blade. motor support Remove the 4 tappin g screw s fixing the motor; disconnect the leading wire insert of the motor and then remove the moto r.
- Page 78 Service Manual Steps Procedure 6.Remove soundproof sponge Since the piping ports on the soundproof sponge are torn easily, remove the soundproof sponge carefully soundproof sponge 7. Remove Isolation sheet Remove the 3 screws fixing the isolation sheet and then remove the Isolation sheet. Isolation sheet 8.
- Page 79 Service Manual Steps Procedure 9. Remov e compressor Remove the 3 foot nuts fixing the compressor and then remove the compressor. compressor 10.Remove condenser sub-assy capillary sub-assy support Remove the screws connecting the support (condenser) and condenser assy,and then remove the support(condenser). condenser sub-assy Remove the chassis sub-assy and condenser sub-assy.
- Page 80 Service Manual Steps Procedure condenser sub-assy Dissemble the chassis sub-assy and condenser sub-assy. chassis sub-assy Installation and Maintenance...
- Page 81 Service Manual GWH24KG-K3DNA6G/O Steps Procedure 1. Remove top panel handle and Twist off the screws used for fixing the handle and v alve cover , pull the handle and v alve cover up ward to remove it. valve cover top panel Remove the 3 screws connecting the top panel with the front panel and the right side plate, and then remove the top panel.
- Page 82 Service Manual Steps Procedure Remove the 5 screws connecting the panel with the chassis and the motor support, and then remove the panel. panel 3. Remove right side plate and left side plate right side plate Remove the scre ws connecting the right side plate with the chassis, the valve support and the electric box, and then remove the right side plate assy .
- Page 83 Service Manual Steps Procedure 4. Remove fan motor and axial flow blade axial flow blade Remove the nuts fixing the blade and then remove the axial flow blade. fan motor fixing frame Remove the 4 tapping screws fixing the motor; disconnect the leading wire insert of the motor and then remove the motor.
- Page 84 Service Manual Steps Procedure 4-way valv e assy 6.Remove soundproof sponge and Since the piping ports on the soundproof sponge are torn easily, remove the soundproof sponge carefully 4-way valv e assy Discharge the refrigerant completely;unsolder the pipelines connecting the compressor and the condenser assy,and then remove the 4-way valve assy.
- Page 85 Service Manual Steps Procedure 8. Remov e Cut off Valve and Valve Support Remove the 2 bolts fixing the valve subassemblies. Unsolder the welding joint connecting the gas valve and the return air pipe. Remove the gas valve. (Note: When unsoldering the soldering joint, wrap the gas valve with wet cloth completely to avoid damage to the valve caused by high temperature.) Unsolder the welding joint connecting the liquid valve...
- Page 86 Service Manual Steps Procedure condenser sub-assy 11.Remove condenser sub-assy Remove the chassis sub-assy and condenser sub-assy. chassis sub-assy Installation and Maintenance...
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Page 87: 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 60.8 69/70 69.8 78/79 78.8 62/63... -
Page 88: 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 89: 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 (15K) Temp( C) Resistance(kΩ) Temp( C) 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... - Page 90 Service Manual Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K) Temp( C) Resistance(kΩ) Temp( C) 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...
- Page 91 Service Manual Resistance Table of Discharge Temperature Sensor for Outdoor (50K) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) 853.5 18.34 4.75 799.8 93.42 17.65 4.61 89.07 16.99 4.47 703.8 84.95 16.36 4.33 660.8 81.05 15.75 4.20 620.8 77.35 15.17 4.08...
- Page 92 GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 Email: gree@gree.com.cn Http://www.gree.com HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED Add: Unit 2612,26/F.,Miramar Tower 132 Nathan Road,TST,Kowloon,HK Tel: (852) 31658898 Fax: (852) 31651029...
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