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Summary of Contents for Gree GWH18AAC-K3NNA1A
- Page 1 Change for Life Service Manual Models: GWH18AAC-K3NNA1A GWH18AAC-K3NNA2A GWH24AAD-K3NNA1A GWH24AAD-K3NNA2A (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 Capacity Curve in Different Outdoor Temperature ............. 4 2.3 Cooling and Heating Data Sheet in Rated Frequency ............4 3. - Page 3 Service Manual 9. Maintenance ......................... 30 9.1 Error code ..........................30 9.2 Procedure of Troubleshooting ..................... 32 9.3 Maintenance method for normal malfunction ..............37 10. Exploded View and Parts List ..............39 10.1 Indoor Unit ......................... 39 10.2 Outdoor Unit ........................43 11.
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Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1.Summary Indoor Unit: GWH18AAC-K3NNA1A/I GWH24AAD-K3NNA1A/I GWH18AAC-K3NNA2A/I GWH24AAD-K3NNA2A/I Outdoor Unit: GWH18AAC-K3NNA1A/O GWH24AAD-K3NNA1A/O Remote Controller: YAW1F Technical Information... -
Page 5: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet GWH18AAC-K3NNA1A GWH24AAD-K3NNA1A Model GWH18AAC-K3NNA2A GWH24AAD-K3NNA2A CA115014200 CA115014300 Product Code CA115014500 CA115014600 Rated Voltage 220-240 220-240 Power Rated Frequency Supply Phases Power Supply Mode Indoor Indoor Cooling Capacity 4800 6150 Heating Capacity 5000 6700... - Page 6 Service Manual Model of Outdoor Unit GWH18AAC-K3NNA1A/O GWH24AAD-K3NNA1A/O Product Code of Outdoor Unit CA115W14200 CA115W14300 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO.,LTD CO., LTD Compressor Model QXA-D19F030 QXA-F232F050 Compressor Oil ATMOS-RB68EP or equivalent RB68EP Compressor Type Rotary Rotary L.R.A.
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Page 7: Capacity Curve In Different Outdoor Temperature
Service Manual 2.2 Capacity Curve in Different Outdoor Temperature Cooling Heating Condition Condition Heating °C °C Indoor:DB27 WB19 Indoor:DB20 °C Indoor air flow: Super High Indoor air flow: Super High Pipe length:5m Pipe length:5m -7 -5 32 33 34 35 36 37 38 39 40 41 42 43 44 45 Outdoor temp.( ) Outdoor temp.( ) °C... -
Page 8: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit Ф55 Ф55 Φ55 Φ55 Unit:mm MODEL Technical Information... -
Page 9: Outdoor Unit
Service Manual 3.2 Outdoor Unit GWH18AAC-K3NNA1A/O Unit:mm GWH24AAD-K3NNA1A/O Unit:mm Technical Information... -
Page 10: Refrigerant System Diagram
side Valve Capillary Strainer Service Manual 4. Refrigerant System Diagram COOLING Cooling and heating model 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... -
Page 11: 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 12 Service Manual ● Outdoor Unit 61413350 Technical Information...
- Page 13 Service Manual These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit. Technical Information...
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Page 14: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram ● Top view Name Compressor interface Interface of power cord live wire Interface of power cord neutral wire Interface of cold plasma neutral wire PG motor interface Outdoor fan interface 4-way valve interface Interface of cold plasma live wire Up&down swing interface PG motor feedback interface Left&right swing interface... -
Page 15: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on Remote Controller On/Off button Mode button Fan button ▲/ button Swing button Sleep button Temp button Turbo button I Feel button Timer button X-Fan button Light button Icon Display on Remote Controller Temp. - Page 16 Service Manual 1. ON/OFF button Press this button to turn on the unit. Press this button again to turn off the unit. 2. MODE button Each time you press this button,a mode is selected in a sequence that goes from AUTO, COOL, DRY, FAN, and HEAT *, as the following: * Note: Only for models with heating function.
- Page 17 Service Manual TEMP button Press this button, you can see indoor set temperature, indoor ambient temperature on indoor unit’s display. The setting on remote controller is selected circularly as below: no display TURBO button Press this button to activate / deactivate the Turbo function. 9.
- Page 18 controller is locked, is displayed. In this case, Press " " and " ▲ " buttons simultaneously 3s to lock or unlock the keypad. If the remote pressing any button, blinks three times. Service Manual Combination of "MODE" and " " buttons: About switch between Fahrenheit and centigrade At unit OFF, press "MODE"...
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Page 19: Brief Description Of Modes And Functions
Service Manual 6.2 Brief Description of Modes and Functions Display Receiver Operation icon Cooling icon window Dual-8 nixie Heating icon Drying icon tube display (Display content or position may be different from above graphics, please refer to actual products) Start cooling Tamb. - Page 20 Service Manual Freeze protection period 3 min Compressor Outdoor fan motor Indoor fan motor Set fan speed amb. Cooling preset Drying preset- Stop 6 min 6min. 4min. 4min. Compressor Outdoor fan motor Indoor fan motor Low speed Technical Information...
- Page 21 Service Manual Stop heating preset Original operating status preset Start heating min. Compressor Outdoor unit Intdoor unit Set fan speed Set fan speed min. min. Reversing valve or 56℃ Technical Information...
- Page 22 Service Manual Emergency Press OFF status ON status(Auto mode) operation switch Press O(0°) Technical Information...
- Page 23 Service Manual Indoor ambient temperature sensor is open/short-circuited Indoor evaporator temperature sensor is open/short-circuited Blocked protection of IDU fan motor Malfunction protection of jumper cap Zero-crossing inspection circuit malfunction of the IDU fan motor Lack of refrigerant or block protection for the system(not applicable to residential air conditioner) Overload malfunction No display for some models...
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Page 24: 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 25 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 26: Installation
Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall At least 15cm At least 15cm Space to the wall Drainage pipe Installation and Maintenance... - Page 27 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 28: Installation Parts-Checking
Service Manual 8.2 Installation Parts-Checking 8.4 Electric Connection Requirement 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 Connection pipe power supply circuit and air switch. - Page 29 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 30 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 for installation when binding them.
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Page 31: Installation Of Outdoor Unit
Service Manual 8.6 Installation of Outdoor unit Refer to the following table for wrench moment of force: Tightening torque(N . m) 1. Fix the Support of Outdoor Unit(Select it according to Hex nut diameter(mm) the actual installation situation) Φ6 15~20 Φ9.52 30~40 (1) Select installation location according to the house structure. -
Page 32: Vacuum Pumping And Leak Detection
Service Manual (3) The water outlet cant 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 33: Maintenance
Service Manual 9. Maintenance 9.1 Error code Display Method Possible Causes(For specific maintenance Malfunction of Indoor Unit A/C Status method, please refer to the following procedure of Name troubleshooting) (Error Code) 1.The wiring terminal between indoor ambient temperature The unit will stop operation as it sensor and main board is loosened or poorly contacted;... - Page 34 Service Manual Zero-crossing 1.Quick de-energization and energization. Wrong inspection judgement by the controller because the electric- circuit Operation of remote controller or control discharging of capacitor is slow. malfunction panel is available, but the unit won’t act. 2.Zero-crossing inspection circuit of main board for of the IDU fan controller is abnormal.
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Page 35: 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 36 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 37 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 38 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 39 Service Manual 5. High Temperature and Overload Protection (AP1 below means control board of outdoor unit) E8 Start Normal protection, please use it Unit restarts If the outdoor ambient temperature is after improving the outdoor ambient normally higher than 53°C? temperature Improve the radiating environment of Unit restarts...
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Page 40: Maintenance Method For Normal Malfunction
Service Manual 9.3 Maintenance method for normal malfunction 1. Air Conditioner Cant be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether its due to power failure. If yes, No power supply, or poor After energization, operation indicator isnt bright wait for power recovery. - Page 41 Service Manual 4. ODU Fan Motor Cant 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 42: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit Installation and Maintenance... - Page 43 Service Manual Part Code Description GWH18AAC-K3NNA1A/I GWH18AAC-K3NNA2A/I Product Code CA115N14200 CA115N14500 Front Panel 20000300003801T 20000300008001T Display Board 300001000037 300001000037 Front Case 20000200000901 20000200000901 Helicoid Tongue 26112436 26112436 Left Axile Bush 10512037 10512037 Rear Case assy 000001000010 000001000010 Drainage Hose 05230014...
- Page 44 Service Manual The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
- Page 45 Service Manual Part Code Description GWH24AAD-K3NNA1A/I GWH24AAD-K3NNA2A/I Product Code CA115N14300 CA115N14600 Front Panel 20000300003101T 20000300008101T Display Board 300001000037 300001000037 Filter Sub-Assy 11122089 11122089 Front Case 20000200000801 20000200000801 Guide Louver 20000400000401 20000400000401 Axile Bush 10542036 10542036 Air Louver 10512732 10512732 Helicoid Tongue 26112512 26112512 Left Axile Bush...
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Page 46: Outdoor Unit
Service Manual 10.2 Outdoor Unit The component picture is only for reference; please refer to the actual product. Installation and Maintenance... - Page 47 Service Manual Part Code Description GWH18AAC-K3NNA1A/O Product Code CA115W14200 Front Grill 22413008 Front Panel 0153303204P Chassis Sub-assy 017000000042P Drainage Connecter 06123401 Magnet Coil 4300040047 Compressor and Fttings 009001000074 4-way Valve 430004032 4-way Valve Assy 030152000185 StrainerA 07210022 Capillary Sub-Assy 030006000254...
- Page 48 Service Manual The component picture is only for reference; please refer to the actual product. Technical Information...
- Page 49 Service Manual Part Code Description GWH24AAD-K3NNA1A/O Product Code CA115W14300 Front Grill 22415001 Left Handle Cabinet 01435001P Axial Flow Fan 10335261 Fan Motor 15015057 Chassis Sub-assy 02803108P Motor Support Sub-Assy 0170305901 Coping 01255001 Condenser Assy 01163524 Rear Grill 01473069 Electric Box Assy 100002000839 AC Contactor 44010245...
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Page 50: Removal Procedure
Service Manual 11. Removal Procedure Caution: discharge the refrigerant 11.1 Removal Procedure of Indoor Unit completely before removal. Step Procedure 1. Remove filter Panel Open the panel. Loosen the clasp shown in the fig and then pull the left filter and right filer outwards to remove them. - Page 51 Service Manual Step Procedure 3. Remove panel Panel Display Open the front panel; separate the panel rotation shaft from the groove fixing the front panel and then removes the front panel. Note: The display of some models is fixed on Screws the panel;...
- Page 52 Service Manual Step Procedure 6. Remove electric box assy Screws Loosen the connection clasps between Clasps Cold plasma generator and electric box, and then remove the cold plasma generator. Shield cover of Electric box Electric box Step motor ① Cut off the wire binder and pull out the Indoor tube Grounding indoor tube temperature sensor.
- Page 53 Service Manual Step Procedure 7. Remove evaporator assy Remove 3 screws fixing evaporator assy. Screws Connection pipe clamp At the back of the unit, Loosen the clasp,connection pipe clamp and then remove the connection pipe clamp. Clasp Groove Rear Case assy First remove the left side of evaporator from Clasp the groove of bottom shell and then remove...
- Page 54 Service Manual Step Procedure 8. Remove motor and cross flow blade Remove 3 screws fixing motor clamp and then remove the motor clamp. Motor clasp Screws Cross flow Remove the at the connection place of Motor cross flow blade and motor; lift the motor and cross flow blade upwards to remove them.
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Page 55: Removal Procedure Of Outdoor Unit
Service Manual 11.2 Removal Procedure of Outdoor Unit Steps 1. Before disassembly 2. Remove big handle Remove the connection screw fixing the big big handle handle and then remove the handle. 3. Remove top cover plate top panel Remove connection screws connecting the top panel with the front panel and the right side plate, and then remove the top panel. - Page 56 Service Manual Steps 4. Remove front grille Remove connection screws between the front grille and the front panel. Then remove the front grille. front grill 5. Remove front panel Remove connection screws connecting the front panel with the chassis and the motor support and then remove the front panel.
- Page 57 Service Manual Steps 7. Remove axial flow blade Remove the nut on the blade and then remove the axial flow blade axial flow blade. 8. Remove motor and motor support Remove the 4 tapping screws fixing the motor and motor support disconnect the leading wire insert of the motor.
- Page 58 Service Manual Steps 10. Remove isolation sheet isolation sheet Remove the 3 screws fixing the isolation sheet and then remove the isolation sheet. 11. Remove soundproof sponge Remove the soundproof sponge wrapping the compressor. soundproof sponge 12. Remove magnet coil Remove the screw fixing the magnet coil and then remove the coil.
- Page 59 Service Manual Steps 13. Remove liquid valve and gas valve Unsolder the welding joint connecting the capillary, valves and the outlet pipe of condenser to remove the capillary. Do not block the capillary with welding slag during unsoldering. Remove the 2 screws fixing the gas valve and unsolder the welding joint between the gas valve liquid valve and the air-return pipe to remove the gas valve.
- Page 60 Service Manual Step Procedure 1. Remove valve cover Remove the 2 screws fixing valve cover and then remove the valve cover. Screws. Valve cover 2..Remove.handle Remove.the.screw. .handle;.slide.out.the. handle.upwards.to.make.the.clasp.of.handle. separate.from.the.groove.of.right.side.plate,. and.then.remove.the.handle. Handle Screw Right.side.plate 3..Remove.top.panel Top.panel Remove.the.screws. .top.panel.and. then.remove.the.top.panel. Screws Installation and Maintenance...
- Page 61 Service Manual Step Procedure 4. Remove front grille Remove the screws of grille and then remove the front grille. Screws Front grille 5. Remove cabinet Cabinet Remove the cabinet by screwing off the locking screws on cabinet. Screws Screws 6. Remove right side plate Remove the screws xing right side plate and Right side plate then remove the right side plate.
- Page 62 Service Manual Step Procedure 7. Remove protective grille Cut off the wire binder fixing the protective grille and then remove the protective grille. Protective grille Screw1 8. Remove electric box assy Electric box assy Remove the wiring terminals on electric box. assy and then remove the electric box assy.
- Page 63 Service Manual Step Procedure 10..Remove.motor Remove.the.screws. .motor.and.then. remove.the.motor. Motor Screws 11..Remove.motor.support Remove.the.screws. xing.motor.support. and.then.remove.the.motor.support. Motor.support Screws 12..Remove.4-way.valve.assy.and.capillary.sub-assy Unsolder.the.spot.weld.of.4-way.valve.assy,. Spot.weld capillary,.compressor.and.condenser,.and. then.remove.the.4-way.valve.assy.and. capillary.sub-assy. Capillary.sub-assy Note: When.unsoldering.the.spot.weld,.wrap. the.4-way.valve.with.wet.cloth.completely. to.avoid.damaging.the.valve.due.to.high. Spot.weld temperature. 4-way.valve.assy Installation and Maintenance...
- Page 64 Service Manual Step Procedure 13. Remove gas valve and liquid valve Remove two screws xing the gas valve, then remove the gas valve. Remove two screws the liquid valve, then remove the liquid valve. Screw off the screws and then remove the valve support. Screws Liquid valve Gas valve...
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Page 65: 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 66: Appendix 2: 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 67: 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 68 Service Manual Resistance Table of Tube Temperature Sensors for Outdoor and Indoor (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 69 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 70 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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