Related Manuals for Gree GWH18MC-K3NNA2K/I
Summary of Contents for Gree GWH18MC-K3NNA2K/I
- Page 1 Change for Life Service Manual Model: GWH18MC-K3NNA2K GWH24MD-K3NNA2K (Refrigerant R410A) GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...
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Page 2: Table Of Contents
Service Manual Table of Contents Part : Technical Information ................. 1 1. Summary ........................1 ......................2 ......................2 2.2 Capacity Curve in Different Outdoor Temperature ............. 4 2.3 Operation Data ........................4 3. Outline Dimension Diagram ................5 3.1 Indoor Unit.......................... 5 3.2 Outdoor Unit ........................ - Page 3 Service Manual 9. Maintenance ......................... 31 9.1 Error Code........................... 31 ..................... 32 ..............37 10. Exploded View and Parts’ List ..............39 10.1 Indoor Unit......................... 39 10.2 Outdoor Unit ........................43 11. Removal Procedure .................... 47 11.1 Removal Procedure of Indoor Unit ..................47 11.2 Removal Procedure of Outdoor Unit .................
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Page 4: Part : Technical Information
Service Manual Part : Technical Information 1. Summary Indoor Unit: GWH18MC-K3NNA2K/I GWH24MD-K3NNA2K/I Outdoor Unit: GWH18MC-K3NNA2K/O GWH24MD-K3NNA2K/O Remote Controller: YB1FA(XFAN) - Page 5 Air Flow Volume(SH/H/M/L/SL) 850/820/790/730/- 1000/800/700/600/- 3.02 3.04 3.45 3.23 SEER HSPF Application Area 23-34 27-42 Model of indoor unit GWH18MC-K3NNA2K/I GWH24MD-K3NNA2K/I Indoor Unit Product Code CA181N12100 CA181N12000 Fan Type Fan Motor Cooling Speed(SH/H/M/L/SL) r/min 1350/1200/1050/900/- 1350/1150/1000/850/- Fan Motor Heating Speed(SH/H/M/L/SL) r/min 1420/1250/1150/1050/-...
- Page 6 Service Manual Model of Outdoor Unit GWH18MC-K3NNA2K/O GWH24MD-K3NNA2K/O Outdoor Unit Product Code CA181W12100 CA181W12000 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR CO., LTD. CO., LTD. Compressor Model QXA-F20F050 QXA-F265N030 Compressor Oil RB 68EP RB68EP Compressor Type Rotary Rotary L.R.A. 42.00 49.50 Compressor RLA 7.70 10.60...
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Page 7: Capacity Curve In Different Outdoor Temperature
Service Manual 2.2 Capacity Curve in Different Outdoor Temperature Cooling Heatling Conditions Condition Heating Indoor:DB27°C/WB19°C Indoor:DB20 °C WB15°C Indoor air flow:Super High Indoor air flow: Super High Pipe length:5m Pipe length: -7 -5 Outdoor temp.( ) Outdoor Temp.(°C) 2.3 Operation Data Cooling Pressure of gas pipe Rated cooling condition(... -
Page 8: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit Φ55X2 Φ70X2 Unit:mm Models 1007... -
Page 9: Outdoor Unit
Service Manual 3.2 Outdoor Unit GWH18MC-K3NNA2K/O GWH24MD-K3NNA2K/O Unit:mm... -
Page 10: Refrigerant System Diagram
Service Manual 4. Refrigerant System Diagram 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 Capillary Strainer Strainer COOLING HEATING Refrigerant pipe diameter Liquid :1/4"... -
Page 11: Electrical Part
Service Manual 5. Electrical Part 5.1 Wiring Diagram Symbol Symbol Color Symbol Symbol Color Symbol Name Green Jumper cap Yellow Brown COMP Compressor Blue Grounding wire YEGN Yellow/Green Violet Orange GWH18MC-K3NNA2K/I... - Page 12 Service Manual GWH24MD-K3NNA2K/I I I I...
- Page 13 Service Manual Outdoor Unit: GWH18MC-K3NNA2K/O GWH24MD-K3NNA2K/O...
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Page 14: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram GWH18MC-K3NNA2K/I Top view Part Name Control connector COMP of outdoor AC contactor and control relay K2 Interface of neutral wire Control interface of indoor fan Drive capacitor of indoor fan Auto button Signal feedback interface of indoor fan... - Page 15 Service Manual GWH24MD-K3NNA2K/I ● Top view 14 15 1 Transformer output interface Interface of tube temperature sensor Interface of ambient temperature sensor 4 Fuse 5 Interface of health function live wire 6 Live wire interface 7 Interface of PG feedback 8 Compressor interface 9 Neutral wire interface 10 PG control interface...
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Page 16: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on Remote Controller ON/OFF Button MODE Button +/- Button FAN Button Button CLOCK Button TIMER ON/TIMER-OFF Button X-FAN Button TEMP Button TURBO Button LIGHT Button SLEEP Button Introduction for Icons on Display Screen Operation mode Operation mode Set fan speed... - Page 17 Service Manual " on indoor unit is ON. Press "+" or "-" button " on indoor unit is ON. Under dry " on indoor unit is ON. Press “+” or “-“ Note: indoor ambient temperature). 3. “+” or“-” Button .Holding "+" or "-" button, 2s later, set temperature on remote buttons) 4.
- Page 18 Service Manual " icon resumes displaying. " icon resumes Note: 8. X-FAN Button button again to cancel x-fan function, and " "icon will disappear. Note: 9. TEMP Button no display Note: indoor set temperature. 10. TURBO Button " icon is displayed on remote "...
- Page 19 Service Manual Operation Guide 2. Press "MODE" button to select your required mode:AUTO,COOL,DRY,FAN,HEAT. 3. Press “+” or “-“ button to set your required temperature. (Temperature can’t be 5. Press " " button to select fan blowing angle. Replacement of Batteries in Remote Controller Note: Signal sender Battery...
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Page 20: Brief Description Of Modes And Functions
Service Manual 6.2 Brief Description of Modes and Functions 1. Summary (1) Buzzer buzzer will give out a beep. (2) Display After energization, all icons will be displayed once. Operation icon Display Receiver Operation icon Cooling icon window Dual-8 nixie Heating icon Drying icon drying). - Page 21 Service Manual Freeze protection period 3 min Compressor Outdoor fan motor Indoor fan motor Set fan speed If overcurrent protection occurs for 6 times consecutively, and resume operation time won’t exceed 6min every time, overcurrent protec- (3) Drying mode Operation condition and process for drying mode IDU fan motor operates at low speed.
- Page 22 Service Manual Operation condition and process for fan mode (4-way valve is not available for cooling only unit). Temperature setting range is 16~30 Display: Operation icon, set temperature. Protection function under cooling mode for details. (5) Heating mode(no heating mode is not available for cooling only unit) conditioner won’t blow out cold wind.
- Page 23 Service Manual 3. Other Control Function Introduction (1)Timer function function of controller can be activated. 30-minute increments. (2) Emergency operation switch Emergency Press OFF status ON status(Auto mode) operation switch Press (3) Sleep function range to operate. operate. (4) Turbo function fan speed.
- Page 24 Service Manual (8) Dual-8 nixie tube display same. Indoor ambient temperature sensor is open/ Indoor evaporator temperature sensor is Zero-crossing inspection circuit malfunction Overcurrent protection some models) (9) Memory function General timer can be memorized. Time of timer is calculated again from energization. General timer can be memorized.
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Page 25: Part : Installation And Maintenance
Service Manual Part : 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 26 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 27: Installation
Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 15cm At least 15cm The dimensions of the space necessary for proper installation of the unit include the minimum permissible distances to adjacent parts. Drainage pipe Installation and Maintenance... - Page 28 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 29: Selection Of Installation Location
Service Manual 8.2 Installation Parts-checking 8.4 Electric Connection Requirement 1. Safety precaution Name Name Indoor unit Sealing gum Outdoor unit Wrapping tape Support of outdoor Connection pipe unit Drainage pipe Fixing screw of air conditioner. Unstable power supply or incorrect wiring Wall-mounting Drainage plug(cooling frame... - Page 30 Service Manual 5. Connect the Pipe of Indoor Unit in Fig.5) 3. Install Wall-mounting Frame Wall Wall Level meter Mark in the middle of it Space Space to the to the Open-end wrench wall wall above above Union nut 150mm 150mm Pipe Pipe joint...
- Page 31 Cable-cross hole Liquid Fig.14 Power connection pipe Band wire Fig.12 Drain hose Drain hose Connection pipe Band Fig.15 Indoor power cord GWH24MD-K3NNA2K/I GWH18MC-K3NNA2K/I Note: N(1) N(1) winding. yellow- blue black brown violet orange blue black brown violet orange green yellow-...
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Page 32: Installation Of Outdoor Unit
Service Manual 8.6 Installation of Outdoor Unit 1. Fix the support of outdoor unit(select it according to the Hex nut diameter(mm) actual installation situation) 15~20 30~40 45~55 expansion screws. 60~65 70~75 Note: 5. Connect Outdoor Electric Wire outdoor unit. GWH24MD-K3NNA2K/O GWH18MC-K3NNA2K/O N(1) N(1) - Page 33 Service Manual 8.8 Check after Installation and Test Operation 1. Check after Installation installation. The drain hose can't be fluctuant Possible malfunction The water outlet emit noise. can't be placed The drain hose in water can't be fluctuant The water outlet can't be Fig.27 fluctuant...
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Page 34: Maintenance
Service Manual 9. Maintenance 9.1 Error Code Indicator lamp (Only for Malfunction Error A/C Status Name Code 0.5S and OFF for 0.5S) Operation COOL HEAT Lamp Lamp Lamp temperature sensor and main board is loosened Indoor ambient or poorly contacted; point. - Page 35 Service Manual 9.2 Procedure of Troubleshooting 1. Malfunction of Temperature Sensor F1, F2 Troubleshooting for F1,F2 malfunction the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? Insert the temperature sensor tightly Is malfunction eliminated Is there short circuit due to trip - over of the parts? Make the parts upright Is malfunction...
- Page 36 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Troubleshooting for H6 malfunction Stir the blade with a tool to see whether the blade rotates smoothly Tighten the screw; reassemble the blade, motor and shaft bearing rubber base sub-assy to make sure there is no foreign object between them Is malfunction eliminated...
- Page 37 Service Manual 3. Malfunction of Protection of Jumper Cap C5 Troubleshooting for C5 malfunction Appearance of Is there jumper cap on the the jumper cap mainboard ? Assemble the jumper cap with the same model Is malfunction eliminated the jumper cap inserted correctly and tightly ? Insert the...
- Page 38 Service Manual 4. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8 Troubleshooting for U8 malfunction Re-energize1 minute after de-erergization The unit returns to normal. Conclusion:U8 is displayed due U8 is still to instant energization afte de- displayed energization while the capacitor discharges slowly.
- Page 39 Service Manual 5. Malfunction of Overcurrent Protection E5 Troubleshooting for E5 malfunction Is the supply voltage unstable Normal fluctuation is within 10 % of the rated Malfunction is with big fluctuation? voltage on the nameplate eliminated Is the supply voltage too low Malfunction is Adjust the supply voltage to maintain it within Malfunction is...
- Page 40 Service Manual 9.3 Maintenance Method for Normal Malfunction 1. Air Conditioner Can't be Started Up Possible Causes No power supply, or poor connection for power plug connected well. Wrong wire connection between indoor unit and outdoor unit, Under normal power supply circumstances, or poor connection for wiring terminals reliably...
- Page 41 Service Manual 4. ODU fan Motor Can't Operate Possible causes Connect wires according to wiring diagram to Wrong wire connection, or poor connection diagram damaged fan capacitor. Power voltage is a little low or Motor of outdoor unit is damaged is bad and ODU compressor generates a lot of 5.
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Page 42: Exploded View And Parts' List
Service Manual 10. Exploded View and Parts’ List 10.1 Indoor Unit GWH18MC-K3NNA2K/I Installation and Maintenance... - Page 43 Service Manual Part Code Description GWH18MC-K3NNA2K/I Product Code CA181N12100 Front Panel Assy 20012283 Filter Sub-Assy 1112208901 Screw Cover 24252016 Front Case Sub-Assy 20022172 Guide Louver 10512115 Air Louver 1 10512116 Helicoid tongue 26112238 10512037 Rear Case assy 12312214 Rubber Plug (Water Tray)
- Page 44 Service Manual GWH24MD-K3NNA2K/I Installation and Maintenance...
- Page 45 Service Manual Part Code Description GWH24MD-K3NNA2K/I Product Code CA181N12000 Front Panel Assy 20012369 Filter Sub-Assy 11122091 Screw Cover 24252016 Front Case 20012295 Air Louver 1 10512159 Helicoid tongue 26112187 10512037 Rear Case assy 2220226301 Rubber Plug (Water Tray) 76712012 Ring of Bearing 26152025 76512203 Cross Flow Fan...
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Page 46: Outdoor Unit
Service Manual 10.2 Outdoor Unit GWH18MC-K3NNA2K/O Installation and Maintenance... - Page 47 Service Manual Part Code Description GWH18MC-K3NNA2K/O Product Code CA181W12100 Front grill 22415001 26235401 Cabinet 01305015 Axial Flow Fan 10335261 Fan Motor 15015057 Motor Support Sub-Assy 01703098 Top Cover 01255001 Clapboard Sub-Assy 01233035 Electric Box Assy 02613633 Condenser Assy 01103000303 Rear grill 014730371 Capacitor CBB61 33010026...
- Page 48 Service Manual GWH24MD-K3NNA2K/O Installation and Maintenance...
- Page 49 Service Manual Part Code Description GWH24MD-K3NNA2K/O Product Code CA181W12000 Front grill 22415002 Front Panel 01535013P Drainage Plug 06813401 Drainage Connecter 06123401 02803371P 00103315 Overload Protector 76711043 4-way Valve Assy 03015200002 01305094P Valve Support Sub-Assy 01713098P Cut-off valve Sub-Assy 07133170 Cut-off Valve 07133157 Handle 26233053...
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Page 50: Removal Procedure
Service Manual 11. Removal Procedure Caution: discharge the refrigerant completely before removal. 11.1 Removal Procedure of Indoor Unit Steps Procedure Panel Clasp to remove it. Horizontal louver Location of step motor Installation and Maintenance... - Page 51 Service Manual Steps Procedure 3. Remove panel Panel Front panel panel. Note: Panel rotation panel. Groove 4. Remove electric box cover Screws Electric box cover 5. Remove front case sub-assy Screws Note: Front case sub-assy Screw caps case sub-assy is different for different models.
- Page 52 Service Manual Steps Procedure 6. Remove vertical louver vertical louver and bottom case to remove vertical louver. Bottom case Vertical louver Clasps 7. Remove electric box assy cover of electric box sub-assy. Electric box Clasps box sub-assy temperature sensor and grounding wire evaporator.
- Page 53 Service Manual Steps Procedure Note: Display Screws panel. Screws 8. Remove evaporator assy Connection pipe clamp Screws screw fixing connection pipe clamp clamp. Evaporator assy Screws Connection pipe evaporator upwards to remove it. Installation and Maintenance...
- Page 54 Service Manual Steps Procedure 9. Remove stepping motor Step motor Screws Motor clamp place of cross flow blade and motor; lift Motor Screws Bottom case Holder sub-assy Installation and Maintenance...
- Page 55 Service Manual Steps 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. clasp left filter and right filer 2. Remove panel panel Open the front panel;...
- Page 56 Service Manual Steps Procedure 3. Remove horizontal louver Push out the axile bush on horizontal louver. Bend the horizontal louver with hand and then horizontal louver separate the horizontal louver from the crankshaft of step motor to remove it. location of step motor axile bush 4.
- Page 57 Service Manual Steps Procedure 6. Remove vertical louver Loosen the connection clasps between vertical bottom louver and bottom case to remove vertical case louver. vertical louver clasps electric box 7. Remove electric box assy Loosen the connection clasps between shield cover of electric box sub-assy and electric box, and then remove the shield cover of electric box sub-assy.
- Page 58 Service Manual Steps Procedure Remove two screws fixing display. Note: The display of some models is fixed on the panel; unscrew the screws fixing the display on the panel before removing the panel. screws display electric box Remove the screw fixing electric box assy and then remove the electric box assy.
- Page 59 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 60: Removal Procedure Of Outdoor Unit
Service Manual 11.2 Removal Procedure of Outdoor Unit GWH18MC-K3NNA2K/O Steps Procedure 1. Before disassembly 2. Remove handle handle Remove the screw fixing the handle and then remove the handle. screw 3. Remove top panel and grille top panel Remove screws fixing the top panel and the grille respectively, and then remove the top panel and the grille. - Page 61 Service Manual Steps Procedure 4. Remove front panel and rear guard grille rear guard grille screw panel Remove screws fixing the front panel and the rear guard grille respectively, and then remove the front panel and the rear guard grille. screw screw 5.
- Page 62 Service Manual Steps Procedure 7. Remove motor and motor support motor support Remove screws on the motor and the motor motor support, and then remove the motor and the motor support. screw 8. Remove electric box electric box assy Remove the 2 screws fixing the electric box;...
- Page 63 Service Manual Steps Procedure 10. Remove solenoid coil Remove the screw on the solenoid coil, and then remove the solenoid coil. solenoid coil screw 11. Remove compressor 4-way valve assy compressor Unsolder the pipes (including the soldering joint among 4-way valve, compressor, the condenser, the gas valve and the liquid valve) connected to the...
- Page 64 Service Manual GWH24MD-K3NNA2K/O 1. Remove top panel Before disassembly. top panel Remove the screws connecting the top panel with the front panel and the right side plate, and then remove the top panel. 2.Remove grille and panel Remove the screws connecting the grille and the panel, and then remove the grille.
- Page 65 Service Manual Remove the screws connecting the panel with the chassis and the motor support, and then remove the panel. panel 3.Remove left side plate and right side plate Remove the screws connecting the right side plate with the chassis, the valve support and the electric box, and then remove the right side plate assy.
- Page 66 Service Manual 4. Remove fan motor Remove the nut fixing the blade and then remove the axial flow blade. axial flow blade motor support Remove the 4 tapping screws fixing the motor; disconnect the leading wire insert of the motor and then remove the motor.
- Page 67 Service Manual 6.Remove 4-way valve assy 4-way valve assy Discharge the refrigerant completely; unsolder the pipelines connecting the compressor and the condenser assy, and then remove the 4-way valve assy.(Recover the refrigerant before unsoldering) 7.Remove compressor compressor Discharge the refrigerant completely; unsolder the pipelines connecting the compressor and the condenser assy, and then remove the 4-way valve assy.
- Page 68 Service Manual support Remove the screws connecting the support (condenser) and condenser assy,and then remove the support (condenser). condenser sub-assy Dissemble the chassis sub-assy and condenser sub-assy. chassis sub-assy Installation and Maintenance...
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Page 69: 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 display display display Celsius Celsius Celsius temperature temperature temperature 60.8 69/70 69.8 78/79 78.8 62/63 62.6 71/72 71.6 80/81 80.6 64/65... -
Page 70: Appendix 3: Pipe Expanding M
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 Pipe Shaper Downwards C:Put on suitable insulating pipe Union pipe Pipe Hard... -
Page 71: Appendix 4: List Of Resistance For Ambient Temperature Sensor
Service Manual Appendix 4: List of Resistance for Ambient Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp( Temp( Temp( Temp( 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009 16.39 3.454 0.98 108.7 15.68... - Page 72 Service Manual Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(20K) Temp( Temp( Temp( Temp( 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 4.289 1.233 129.9 19.14 4.14 1.198...
- Page 73 Service Manual Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(50K) Temp( Temp( Temp( Temp( 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 4.08 580.6 73.83 14.62 3.96...
- Page 74 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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