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Summary of Contents for Gree GWH18RC-K3DNA3G
- Page 1 Change for Life Service Manual Models: GWH18RC-K3DNA3G GWH24RD-K3DNA3G (Refrigerant:R410A) 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 ..................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 ......................38 9.1 Malfunction Display of Indoor Unit ..................38 9.2 Procedure of Troubleshooting ..................40 9.3 Troubleshooting for Normal Malfunction .................57 10. Exploded View and Parts List ..............59 10.1 Indoor Unit ........................59 10.2 Outdoor Unit .........................61 11. Removal Procedure ..................65 11.1 Removal Procedure of Indoor Unit ................65 11.2 Removal Procedure of Outdoor Unit ................70...
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Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit GWH18RC-K3DNA3G/I GWH24RD-K3DNA3G/I Outdoor Unit GWH18MC-K3DNE3G/O GWH24MD-K3DNE3G/O Remote Controller YAA1FB Technical Information... -
Page 5: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet Model GWH18RC-K3DNA3G Product Code CB302002902 Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode outdoor Cooling Capacity 5275(1260~6600) Heating Capacity 5800(1120~6800) Cooling Power Input 1625(380~2650) Heating Power Input 1760(350~2650) Cooling Power Current... - Page 6 Service Manual Model of Outdoor Unit GWH18MC-K3DNE3G/O Outdoor Unit Product Code CB404W03401 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model QXA-B141zF030A Compressor Oil 68EP Compressor Type Rotary L.R.A. Compressor RLA Compressor Power Input 1440 Overload Protector 1NT11L-6233 or KSD115 C or HPC115/95U1 Throttling Method Capillary Operation Temp...
- Page 7 Service Manual Model GWH24RD-K3DNA3G GWH24RD-K3DNA3G Product Code CB302003000 CB302003001 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode outdoor outdoor Cooling Capacity 6450(2530~6800) 6450(2530~6800) Heating Capacity 7000(2530~7600) 7000(2530~7600) Cooling Power Input 2180(600~2650) 2180(600~2650) Heating Power Input 2220(600~2800) 2220(600~2800) Cooling Power Current Heating Power Current...
- Page 8 Service Manual Model of Outdoor Unit GWH24MD-K3DNE3G/O GWH24MD-K3DNE3G/O Outdoor Unit Product Code CB404W03800 CB404W03801 ZHUHAI LANDA ZHUHAI LANDA Compressor Manufacturer/Trademark COMPRESSOR CO.,LTD COMPRESSOR CO.,LTD Compressor Model QXA-B141zF030A QXA-B141zF030A Compressor Oil 68EP 68EP Compressor Type Rotary Rotary L.R.A. 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( 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 Φ55 Φ55 Φ70 Φ70 Models 1018 Unit:mm Technical Information... -
Page 12: Outdoor Unit
Service Manual 3.2 Outdoor 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 Capillary Strainer COOLING HEATING Connection pipe specification: Liquid pipe:1/4"... -
Page 14: Electrical Part
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. ● Indoor Unit Model:GWH18RC-K3DNA3G/I TUBE TEMP. ROOM TEMP. SENSOR SENSOR FAN MOTOR TERMINAL TUBE... - Page 15 Service Manual Model:GWH24RD-K3DNA3G/I ● Outdoor Unit Models:GWH18MC-K3DNE3G/O GWH24MD-K3DNE3G/O(CB404W03801) 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...
- Page 16 Service Manual Model:GWH24MD-K3DNE3G/O(CB404W03800) 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 YEGN TERMINAL...
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Page 17: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram Indoor Unit ● Top view Name Interface of live wire Interface of live wire for outdoor control Fuse Interface of neutral wire Interface of neutral wire for health function Control interface of PG motor Interface of live wire for health function Interface of indoor... - 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 compressor electric 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 ON/OFF button - button - button + button + button MODE button MODE button H O U R ONOFF FAN button H O U R ONOFF FAN button SWING button... - Page 20 Service Manual Press this button to turn on the unit. Press this button again to turn off the unit. 2. - Button Press this button to decrease set temperature. Holding it down above 2 seconds rapidly decreases set temperature. In AUTO mode, set temperature is not adjustable.
- Page 21 Service Manual ● When selecting " " by remote controller or no display, temperature indicator on indoor unit displays set temperature. ● When selecting " " by remote controller, temperature indicator on indoor unit displays indoor ambient temperature. ● When selecting " "...
- Page 22 Service Manual Replacement of Batteries in Remote Controller 1.Press the back side of remote controller marked with“ ”as shown in the fig, and then push out the cover of battery box along the arrow direction. 2. Replace two 7# (AAA 1.5V) dry batteries, and make sure the position of “+” polar and “-“ polar are correct. 3.
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Page 23: Brief Description Of Modes And Functions
Service Manual 6.2 Brief Description of Modes and Functions Indoor Unit 1.Basic function of system (1)Cooling mode 1.Under this mode, fan motor, swing will work under setting status, the temp. range is 16-30ºC(61-86 Fahrenheit scale) 2.Outdoor unit malfunction or unit stop running, indoor unit will keep original running status, malfunction displayed. 3.When0 (Tset-Tamb.), if indoor fan motor is high speed, that the fanmotorist running in middle speed, the middle speed or low speed will be maintained;(this condition should be executed when compressor ressor statr up);... - Page 24 Service Manual ●Display of operation patterns and mode patterns When the unit is powered on, all patterns will be displayed and the standby operation indicator will become red. When the unit is turned on through a remote controller, the operation indicator is light. At the same time, operating mode patterns (mode indicators include cooling, heating and dehumidification modes) set currently are displayed, and dynamic display patterns of wind speed are displayed.
- Page 25 Service Manual (4) Sleep function In this mode, the unit will automatically select appropriate sleep curve to operate according to different set temperature. 1. If sleep function is set in cooling, the system will increase set temperature automatically for operation in a certain degree. 2.
- Page 26 Service Manual 3. Protecting Treatments of Thermo-bulb: When the thermobulb is detected to be short-circuited continuously for 5 seconds: It is regarded that the temperature detected by the thermo-bulb is over-high (or unlimited), then the whole machine will exert corresponding safety stops according to the over-high temperature sensed by the thermo-bulb, and display corresponding temperature safety stops and faults of the thermo-bulb simultaneously.
- Page 27 Service Manual 2. Temperature setting range (1) If T ≥ [T ], the temperature can be set at: 16~30ºC (Cooling at room temperature); outdoor ambient temperature low-temperature cooling temperature (2) If T < [T ], the temperature can be set at: 25~30ºC (Cooling at low temperature), that is, the outdoor ambient temperature low-temperature cooling temperature minimum setting temperature for outer units judgment is 25ºC .
- Page 28 Service Manual extend 1 minute, the outer fans will stop (During the period in the 1 minute, the air flow of outer fans can be changed according to the outdoor ambient temperature changes); When running with force, the outdoor fans shall run in the highest air flow. (3) 4-way valve control 1.
- Page 29 Service Manual 4. Reducing frequency at high speed and stop machine: If [T ]≤T ], you should adjust the compressor frequency Cooling overload frequency reducing temperature at high speed outer pipe Cooling overload power turn-off temperature by reducing 30Hz/90s till the lower limit; After it was running 90s at the lower limit, if [T ] ≤[T Cooling overload frequency reducing temperature at normal speed , then Cooling overload protects machine stopping;...
- Page 30 Service Manual 4. Reducing frequency at high speed and power turn-off: If [T ]≤T <[T ] you should adjust the compressor frequency by reducing 30Hz/90s frequency reducing temperature at high speed of module Module Power turn-off temperature of module till the lower limit; After it was running 90s at the lower limit, if [T ] ≤T , you should stop the machine frequency reducing temperature at normal speed of module...
- Page 31 Service Manual 3.To detect voltage abnormity protect for DC bus when getting electricity: If it found the DC bus voltage U >[U ], turn off the relay at once, and shows voltage abnormity failure for DC Bus. And the DC-Over-High Voltage failure can’t recover except to break off and get the electricity.
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Page 32: 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 33 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 34: 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 35 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 36: 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 37 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 38 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 39: Installation Of Outdoor Unit
Service Manual Refer to the following table for wrench moment of force: 8.6 Installation of Outdoor Unit Tightening torque(N . m) Hex nut diameter(mm) 1. Fix the Support of Outdoor Unit(Select it according to Φ6 15~20 the actual installation situation) Φ9.52 30~40 Φ12... -
Page 40: 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 41: 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 42 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 43: Procedure Of Troubleshooting
Service Manual 9.2 Procedure of Troubleshooting Indoot 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 44 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 45 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 46 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? Check flow chart: Start Turn power off for 1minute,the turn...
- Page 47 Service Manual (5) 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 48 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 49 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 50 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 51 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 52 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 53 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 54 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 55 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 56 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 57 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 58 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? Check flow chart: 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 (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 60: 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 61 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 62: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit Installation and Maintenance... - Page 63 Service Manual Part Code Description GWH18RC-K3DNA3G/I GWH24RD-K3DNA3G/I Product Code CB302N02902 CB302N03000 Front Panel Sub-Assy 20012760 20012871 Filter Sub-Assy 1112208901 11122091 Screw Cover 24252016 24252016 Front Case Sub-assy 20012667 2001297402 Air Louver 1 1051211602 1051215901 Helicoid Tongue 2611223802 2611218702 Left Axile Bush...
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Page 64: Outdoor Unit
Service Manual 10.2 Outdoor Unit GWH18MC-K3DNE3G/O 10 11 12 13 Installation and Maintenance... - Page 65 Service Manual Part Code Description GWH18MC-K3DNE3G/O Product Code CB404W03401 Front Grill 22413025 Front Panel 01535013P Electrical Heater (Chassis) 765100045 Drainage Connecter 06123401 Chassis Sub-assy 02803270P Drainage hole Cap 06813401 Compressor and fittings 00105249G Magnet Coil 4300040045 4-Way Valve Assy 03073203 Cut off Valve Assy 1/2 07133774 Cut off Valve Sub-Assy...
- Page 66 Service Manual GWH24MD-K3DNE3G/O 9 10 11 12 13 14 15 Installation and Maintenance...
- Page 67 Service Manual Part Code Description GWH24MD-K3DNE3G/O Product Code CB404W03801 Front Grill 22413026 Cabinet 01435004P Left Handle 26233053 Front Side Plate 01305086P Drainage Connecter 06123401 Chassis Sub-assy 0280325501P Drainage hole Cap 06813401 Gas-liquid Separator Assy 07225017 Compressor and Fittings 00105249G Magnet Coil 4300040045 4-Way Valve Assy 03073144...
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Page 68: 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 Indoor Unit Steps Procedure 1. Remove filter panel Open the panel. - Page 69 Service Manual Steps Procedure Separate the panel rotation shaft from the groove fixing the front panel and then removes the front panel. panel rotation groove 3. Remove horizontal louver Push out the axile bush on horizontal louver. Bend the horizontal louver with hand and then separate the horizontal louver from the horizontal louver crankshaft of step motor to remove it.
- Page 70 Service Manual Steps Procedure right clasp middle clasp left clasp Loosen the clasps at left, middle and right sides of front case. Life the front case sub-assy upwards to remove it. front case sub-assy 6. Remove vertical louver bottom Loosen the connection clasps between vertical case louver and bottom case to remove vertical louver.
- Page 71 Service Manual Steps Procedure electric box Remove the screw fixing electric box assy and then remove the electric box assy. 8. Remove evaporator assy pipe clamp At the back of the unit, remove the screw fixing connection pipe clamp and then remove the connection pipe clamp.
- Page 72 Service Manual Steps Procedure 9. Remove stepping motor Remove the screw fixing step motor and then remove the step motor. screws 10. Remove motor and cross flow blade motor clamp Remove the screws fixing motor clamp and then remove the motor clamp. cross flow screws Remove the screws at the connection place of...
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Page 73: Removal Procedure Of Outdoor Unit
Service Manual 11.2 Removal Procedure of Outdoor Unit Model:GWH18MC-K3DNE3G/O 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. handle valve top panel... - Page 74 Service Manual 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 75 Service Manual 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 76 Service Manual 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 77 Service Manual 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 78 Service Manual Model:GWH24MD-K3DNE3G/O Steps Procedure 1. Remove top panel handle 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 79 Service Manual 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 80 Service Manual 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 81 Service Manual 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 82 Service Manual 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 83 Service Manual 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 84: 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 85: 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 86: 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 87 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 88 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 89 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...