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Summary of Contents for Gree GWH18QD-K3DNA6C
- Page 1 Change for Life Service Manual Model: GWH18QD-K3DNA6C (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 ..................4 2.3 Capacity Variation Ratio According to Temperature ............4 2.4 Cooling and Heating Data Sheet in Rated Frequency .............5 2.5 Noise Curve ........................5 3. - Page 3 Service Manual 9. Maintenance ......................31 9.1 Error Code List .......................31 9.2 Troubleshooting for Main Malfunction ................42 9.3 Troubleshooting for Normal Malfunction .................52 10. Exploded View and Parts List ..............54 10.1 Indoor Unit ........................54 10.2 Outdoor Unit .........................56 11. Removal Procedure ..................58 11.1 Removal Procedure of Indoor Unit ................58 11.2 Removal Procedure of Outdoor Unit ................63...
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Page 4: Part Ⅰ : Technical Information
Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit GWH18QD-K3DNA6C/I Outdoor Unit GWH18QD-K3DNA6C/O Remote Controller YX1F T-ON T-OFF AUTO SWING COOL SLEEP LOCK SPEED HEAT ON/OFF MODE SWING SLEEP TIMER Technical Information... -
Page 5: Specifications
Service Manual 2. Specifications 2.1 Specification Sheet Model GWH18QD-K3DNA6C CB427004100 Product Code Rated Voltage 220-240 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity(Min~Max) 4600 (650~5200) Heating Capacity(Min~Max) 5000 (700~5275) Cooling Power Input(Min~Max) 1430 (150~1860) Heating Power Input(Min~Max) - Page 6 Service Manual Model of Outdoor Unit GWH18QD-K3DNA6C/O Product Code of Outdoor Unit CB427W04100 Compressor Manufacturer/Trademark ZHUHAI GREE DAIKIN DEVICE CO., LTD Compressor Model 1GDY23AXD Compressor Oil FVC50K Compressor Type Swing L.R.A. Compressor RLA Compressor Power Input Overload Protector KSD115/HPC115/95 Throttling Method...
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Page 7: 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 8: 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 condition( connecting indoor and temperature of heat Fan speed of Fan speed of Model (DB/WB) outdoor unit exchanger indoor unit outdoor unit Indoor... -
Page 9: Outline Dimension Diagram
Service Manual 3. Outline Dimension Diagram 3.1 Indoor Unit 168.5 159.5 Φ55 Φ55 168.5 159.5 Φ55 Φ55 Φ55 Φ55 Unit:mm Models 3.2 Outdoor Unit Φ55 Φ55 Unit:mm Technical Information... -
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 Accumlator Suction exchanger Compressor (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Capillary Strainer COOLING HEATING Connection pipe specification: Liquid pipe:1/4"... -
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 WARNING Please don't touch any OUTROOM EXHAUST TUBE 4-WAY terminal when the machine is TEMP. TEMP. TEMP. running ,stopping or has been VALVE REACTOR SENSOR SENSOR SENSOR powered off for less than 30 minutes to prevent the risk of electric shock ! MAGNETIC TERMINAL...
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Page 13: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram Indoor Unit ● Top view Name Neutral wire interface of cold plasma Neutral wire interface of power supply Interface of PG motor Live wire interface of cold plasma Interface of up & down swing motor Interface of indoor fan feedback Interface of temperature sensor Interface of display... - Page 14 Service Manual Outdoor Unit ● Top view Name Reactor wiring terminal Compressor wiring terminal Terminal of outdoor unit temperature sensor Compressor overload protection terminal Terminal with indoor unit communication wire Terminal of power supply live wire terminal Terminal of power supply neutral wire Interface of earthing wire Terminal of outdoor fan 10 Interface of 4-way valve...
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Page 15: Function And Control
Service Manual 6. Function and Control 6.1 Remote Controller Introduction Buttons on Remote Controller ON/OFF button T-ON T-OFF MODE button AUTO SWING COOL SLEEP LOCK SPEED HEAT +/- botton MODE ON/OFF FAN button SWING SWING button SLEEP TIMER SLEEP button TIMER button Icon Display on Remote Controller Timer on Timer off... - Page 16 Service Manual When selecting auto mode, air conditioner will operate automatically according to ex-factory setting. Set temperature can't be adjusted and won't be displayed either. Press FAN button to adjust fan speed. (This function is not available in this air conditioner.) When selecting cool mode, air conditioner will operate under cool mode.
- Page 17 Service Manual Replacement of Batteries in Remote Controller battery 1. Press the back side of remote controller on the spot marked with , and then push out the cover of battery box along the arrow direction. 2. Replace two No.7 (AAA 1.5V) dry batteries and make sure the positions of + and -- polar are correct.
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Page 18: Brief Description Of Modes And Functions
Service Manual 6.2 Brief Description of Modes and Functions 1 General introduction (1) Buzzer When the controller is energized or receives any command or signal from the buttons or the remote controller, the buzzer will give out a beep. (2) Display A6 display After energizing, the unit will display all icons. - Page 19 Service Manual Start cooling Tamb. Tpreset -0.5 ˚C Original operating status Tpreset –2 ˚C Stop cooling 7 min. 3 min. 7 min. Graphic instruction: (Same as below) Compressor Indicates operation Outdoor fan motor Indicates stop Indoor fan motor Set fan speed ②...
- Page 20 Service Manual fan motor blows residual heat for a while at set speed to prevent high temperature inside the unit. ◆ When Tset+3.5℃＜ Tamb. ＜ Tset+5℃ , the unit will maintain its previous operation status. ◆ When the unit stops due to malfunction or protection, the compressor, IDU fan motor and ODU fan motor stop operation. ◆...
- Page 21 Service Manual ◆ Timer ON: If timer ON is set during operation of the unit, the unit will continue to operate. If timer ON is set at unit OFF, upon ON time reaches the unit will start to run according to previous setting status. ◆...
- Page 22 Service Manual ④ Swing function is available only when swing function is set and IDU fan motor is operating. (8) Display of nixie tube on indoor unit ◆ When energized & started for the first time, the nixie tube defaults to displaying current set temperature. ◆...
- Page 23 Service Manual 5 Main system protection (more details please refer to maintenance section) (1) Indoor fan motor does not operate (indoor unit displays H6 in cooling, heating, dry or fan mode) If the controller detects that the rotation speed of indoor fan motor is below 300round/min or the indoor fan motor stops operation, it judges that the motor operation is abnormal.
- Page 24 Service Manual (10) Overcurrent protection (indoor unit displays E5 in cooling, heating or dry mode) If overcurrent is detected for 3s continuously, the system will stop for overcurrent protection; when the protection is eliminated and the compressor has stopped for 3min, the unit will resume running. (11) Temperature sensor malfunction detection (indoor unit displays F1, F2, F3, F4, F5 in cooling, heating, dry or fan mode) ①...
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Page 25: 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 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 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: 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 30 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 31 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 32: 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 the Φ6 15~20 actual installation situation) Φ9.52 30~40 Φ12... -
Page 33: 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 34: Maintenance
Service Manual 9. Maintenance 9.1 Error Code List Display Method of Outdoor Unit (Indicator has 3 kinds of Display Method of Indoor Unit display status and they will be displayed circularly Malfunction A/C Status Possible Causes Countermeasures every 5s.) Name Indicator Display Display □OFF... - Page 35 Service Manual During cooling and drying operation, See 9.3 High discharge compressor and (diagnosis of Flash temperature outdoor fan stop overheating Refer to maintenance 4 times ■ □ ■ ☆ protection of while indoor prevention flowchart every 3s compressor fan operates. and overload During heating protection)
- Page 36 Service Manual Connection terminal between indoor ambient temperature sensor and main board is loose or The unit will poor connection. stop operation as it reaches There’s short the temperature circuit due to trip- point. During over of the parts cooling and on main board;...
- Page 37 Service Manual Feedback terminal of PG motor hasn't been inserted tightly. Indoor fan, Control terminal outdoor fan, of PG motor compressor is not inserted Blockage Flash and electric Refer to maintenance tightly. protection of 11 times heating tube all flowchart indoor unit every 3s stop operation;...
- Page 38 Service Manual During cooling and drying operation, Malfunction of compressor and outdoor ambient outdoor fan stop □ □ ☆ ■ temperature while indoor sensor fan operates. During heating operation, all loads stop. During cooling and drying 1.T-SENSOR operation, 1. After de- Malfunction terminal hasn’t compressor and...
- Page 39 Service Manual Overload; ambient All loads 1. Reduce load; temperature is operates Decrease too high; normally, while frequency due Refrigerant is not operation 2. Add refrigerant ■ ■ □ □ to high air enough frequency of Malfunction 3. Replace electronic discharge compressor of electronic...
- Page 40 Service Manual During cooling See 9.3 and drying (diagnosis of operation, IPM protection, compressor and Overcurrent desynchronizing outdoor fan stop Refer to maintenance protection of malfunction, □ ☆ □ □ while indoor flowchart phase current overcurrent fan operates. protection of During heating phase current of operation, all...
- Page 41 Service Manual During cooling and drying operation, compressor and Flash See 9.3 outdoor fan stop Refer to maintenance 25 PFC protection 6 times (diagnosis of PFC □ ■ ☆ ☆ while indoor flowchart every 3s protection) fan operates. During heating operation, all loads stop.
- Page 42 Service Manual 1. Check whether the Wrong match capacity of indoor unit between indoor During cooling and outdoor unit is unit and outdoor and drying matching with each unit; operation, other; compressor and Hardware Flash 2. Replace indoor malfunction of outdoor fan stop malfunction of 15 times...
- Page 43 Service Manual During cooling and drying operation, Drop compressor and Flash Power voltage 1. Check whether malfunction outdoor fan stop 20 times is unstable, big power supply network □ ■ ■ ■ of DC busbar while indoor every 3s fluctuation. is abnormal;...
- Page 44 Service Manual During cooling and drying operation, compressor and Hardware Zero-crossing 1. Replace outdoor outdoor fan stop malfunction of malfunction of unit's main board ■ ■ ☆ □ while indoor outdoor unit's outdoor unit AP1; fan operates. main board; During heating operation, all loads stop.
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Page 45: Troubleshooting For Main Malfunction
Service Manual 9.2 Troubleshooting for Main Malfunction 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 46 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Main detection points: ● Is the control terminal of PG motor connected tightly? ● Is the feedback interface of PG motor connected tightly? ● The fan motor can't operate ？ ●...
- Page 47 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? ● Detectioncircuit of the mainboard isdefined abnormal? Malfunction diagnosis process: Troubleshooting for C5 malfunction...
- Page 48 Service Manual 4. Malfunction of Overcurrent Protection E5 5. Malfunction of Overcurrent Protection Main detection points: Main detection points: ● Is the supply voltage unstable with big fluctuation? Is the supply voltage too low with overload? ● Is the supply voltage too low with overload? Hardware trouble? ●...
- Page 49 Service Manual 5. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8 Main detection points: ● Instant energization afte de-energization while the capacitordischarges slowly? 4. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor ● The zero-cross detectioncircuit of the mainboard isdefined abnormal? Main detection points: Malfunction diagnosis process: Instant energization afte de-energization while the capacitordischarges slowly?
- Page 50 Service Manual 6. Capacity charging malfunction (outdoor unit malfunction) (AP1 below means control board of outdoor unit) Main detection points: ● Detect if the voltage of L and N terminal of XT wiring board is between 210VAC-240VAC by alternating voltage meter; ●...
- Page 51 Service Manual 7. IPM protection(H5), desynchronizing malfunction(H7), overcurrent of compressor phase current (P5) (AP1 below means control board of outdoor unit) Main detection points: ● Is voltage input within the normal range ● If the control board AP1 is well connected with compressor COMP? If they are loosened? If the connection sequence is correct? ●...
- Page 52 Service Manual 8. High temperature and overload protection (E8)(AP1 below means control board of outdoor unit) Main detection points: ● If the outdoor ambient temperature is in normal range; ● If the indoor and outdoor fan are running normally; ● If the radiating environment of indoor and outdoor unit is good. Malfunction diagnosis process: E8 is displayed Normal protection, please...
- Page 53 Service Manual 9. Start-up failure (LC) (AP1 below means control board of outdoor unit) Main detection points: ● If the compressor wiring is correct? ● If the stop time of compressor is sufficient? ● If the compressor is damaged? ● If the refrigerant charging amount is too much? Malfunction diagnosis process: Turn on the unit The stop time is not sufficient and...
- Page 54 Service Manual 10. Overload and high discharge temperature malfunction Main detection points: ● If the electronic expansion valve is connected well? Is the electronic expansion valve damaged? ● If the refrigerant is leaked? ● The compressor overload protection terminal is not connected well with the mainboard? ●...
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Page 55: 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 56 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 57: Exploded View And Parts List
Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit GWH18QD-K3DNA6C/I T-ON T-OFF AUTO SWING COOL SLEEP LOCK SPEED HEAT ON/OFF MODE SWING SLEEP TIMER Installation and Maintenance... - Page 58 Service Manual Part Code Description GWH18QD-K3DNA6C/I Product Code CB427N04100 Front Panel 2002269501S Display Board 30565264 Filter Sub-Assy 11122089 Decorative Board 2019267001 Front Case 2002248401 Guide Louver 1051276501 Axile Bush 10542036 Air Louver(Manual) 10512732 Helicoid tongue 26112512 Left Axile Bush 10512037...
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Page 59: Outdoor Unit
Service Manual 10.2 Outdoor Unit 23 24 Installation and Maintenance... - Page 60 Service Manual Part Code Description GWH18QD-K3DNA6C/O Product Code CB427W04100 Left Side Plate 01303200P Fan Motor 15013085 Motor Support 01703136 Condenser Assy 01100200506 Top Cover Sub-Assy 01253081 Rear Grill 01475014 Clapboard Sub-Assy 01233180 Compressor and Fittings 00103892 Compressor Gasket 76713027 4-Way Valve Assy...
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Page 61: 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 1. Remove filter as s y F ront panel Open the front panel. - Page 62 Service Manual Loosen the connection clasps between front case sub-assy and bottom case. Lift up the front case sub-assy and take it out. S wing motor Screw off the screws that are locking the swing motor and take the motor off. Installation and Maintenance...
- Page 63 Service Manual Indoor tube temperature s ensor Cut off the wire binder and pull out the indoor tube temperature sensor. Screw off one grounding screw. Main Remove the wiring terminals of motor and board stepping motor. Remove the electric box assy. G rounding Screw off the screws that are locking each s c rew...
- Page 64 Service Manual G roove R ear case ass y First remove the left side of evaporator from the groove on the rear case assy. Then remove the right side from the clasp on the C lasp rear case assy. Installation and Maintenance...
- Page 65 Service Manual Installation and Maintenance...
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Page 66: Removal Procedure Of Outdoor Unit
Service Manual 11.2 Removal Procedure of Outdoor Unit GWH18QD-K3DNA6C/O Steps Procedure 1. Before disassembly 2. Remove big handle big handle Remove the connection screw fixing the big handle. 3. Remove top cover top cover Remove connection screws connecting the top panel with the front panel and the right side plate, and then remove the top panel. - Page 67 Service Manual Steps Procedure 4. Remove grille Remove connection screws between the front grille and the front panel. Then remove the grille. grille 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 68 Service Manual Steps Procedure 8. Remove motor and motor support motor support Remove the tapping screws fixing the motor and disconnect the leading wire insert of the motor. Then remove the motor. Remove the tapping screws fixing the motor motor support and lift the motor support to remove it.
- Page 69 Service Manual Steps Procedure Remove the 2 screws fixing the gas valve and unsolder the welding joint between the gas valve and the air-return pipe to remove the gas valve. (NOTE: Discharge the refrigerant completely before unsoldering; when unsoldering, wrap the gas valve with a wet cloth completely to avoid damage to the valve caused by high 4-way valve...
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Page 70: 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 71: 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 72: 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 73 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 74 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 75 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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