Summary of Contents for GREE ELECTRIC GDN20AQ-E4EBA1A
- Page 1 Service Manual Change for Life Service Manual Model: GDN20AQ-E4EBA1A GDN24AQ-E4EBA1A (Refrigerant R134a) 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 3.Outline Dimension Diagram .............. 3 4.Refrigerant System Diagram ............4 5.Electrical Part .................... 5 5.1 Wiring Diagram ................... 5 5.2 PCB Printed Diagram .................. 6 6.Function and Control ................ -
Page 3: Part Ⅰ : Technical Information
Service Manual Part : Technical Information Ⅰ 1.Summary Technical Information... -
Page 4: Specifications
Service Manual 2.Specifications Model GDN20AQ-E4EBA1A GDN24AQ-E4EBA1A Product Code CK051021100 CK051021200 Rated Voltage 220-240 220-240 Power Supply Rated Frequency Phases Rated Dehumidification Capacity 0.48 0.52 Power Input Current Input Set Humidity Range 35~80 35~80 Air Flow Volume(H/M/L) 185/165/145 185/165/145 Fan Motor Speed(H/M/L) -
Page 5: Outline Dimension Diagram
Service Manual 3.Outline Dimension Diagram unit:mm Technical Information... -
Page 6: Refrigerant System Diagram
Service Manual 4.Refrigerant System Diagram evaporator air in capillary air out condenser fan motor compressor Dehumidifying principle of dehumidifier: When temperature is decreased to the temperature point of dew, water vapor in humid air will condensate. Dehumidifier is dehumidifying the air by using this principle. During operation of the system, air will pass through evaporator and condenser in turn and then be discharged due to centrifugal blade. -
Page 7: Electrical Part
Service Manual 5.Electrical Part 5.1 Wiring Diagram ●Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name White Green COMP Compressor Yellow Brown Grounding wire Blue YEGN Yellow/Green Black Violet Orange LIQUID LEVEL SWITCH HUMIDITY SENSOR MOTOR YEGN AC-L TUBE COMP-L YEGN POWER YEGN... -
Page 8: Pcb Printed Diagram
Service Manual 5.2 PCB Printed Diagram Silk Screen on Main Board ● Top view No. Name Name Interface of water level switch of watertank Interface of fan motor Interface of display board Interface of neutral wire Fuse Compressor relay ● Bottom view Technical Information... - Page 9 Service Manual Silk Screen on Display Board1 Top view 1 Buzzer 2 Needle stand of pipe temperature sensor 3 Dual-8 digital display tube Connection wire of breathing Needle stand of humidity and 5 Connection wire of board light board ambient temperature sensor 7 Power supply indicator 8 On/off button 9 Continuous button...
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Page 10: Function And Control
Service Manual 6.Function and Control 6.1 Control Panel Instruction sleeping Bucket full light space indicates bucket mode on living space needs to be emptied power on high, mid lock on mode on indicator clean the filter or it is not in the indicator and low fan indicator... - Page 11 Service Manual ● Set Timer On: When unit is off, press this button and the Timer Indicator will be on while display window will show the timing figure. Pressing + or - button each time will increase or decrease the time by 0.5h or 1h (When figure varies within 10h, pressing +/- button will increase/ decrease the time by 0.5h;...
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Page 12: Introduction Of Basic Mode Function
Service Manual 6.2 Introduction of Basic Mode Function 1. Basic Function (1) Free drying a. When set humidity ≤ ambient humidity -5%, compressor starts working and fan motor works at set fan speed. b. When set humidity ≥ ambient humidity +5%, compressor stops and fan motor stops in 3 min’s delay at set fan speed. c. -
Page 13: Part Ⅱ : Maintenance
Service Manual Part Ⅱ : Maintenance Refrigerant Safety Precautions: 1. Avoid contact between refrigerant and fire as it generates 7.Notes Maintenance poisonous gas. Recycle the refrigerant inside the unit completely before welding pipes. Safety Precautions: 2. Apply specified refrigerant only. Never have it mixed with any other refrigerant. - Page 14 Service Manual Installation of caster whell 1. Nip the groove at both sides of bucket and pull the bucket out by the arrow shown direction.(As shown in Fig.a) 2.Take out accessory box. (There are 4 castors,As shown in Fig.b) 3.Refit the bucket by the arrow shown direction, then the unit is ready to be electrified and turned on. (As shown in Fig.c) accessory box Bucket Fig.a...
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Page 15: Maintenance
Service Manual 8.Maintenance 8.1 Error Code Malfunction Nixie tube display Unit status Possible Causes Name 1. The wiring terminal between ambient temperature sensor and main board is loosened or poorly contacted; 2. There’s short circuit due to trip-over of the parts on Malfunction of controller;... -
Page 16: Malfunction Detection Flowchart
Service Manual 8.2 Malfunction Detection Flowchart 1. Malfunction of temperature sensor F1, F2 9.3.1 F1/F2 Malfunction Start Is the wiring terminal between temperature sensor and the controller loosened or poor ly contacted? Insert the temperature sensor tightly M alfunction is eliminated. - Page 17 Service Manual 2.Malfunction of humidity sensor L1 Trouble shooting for malfunction of humidity sensor Humidity sensor is not connected well with mainboard check the connection Is malfunction eliminated? The foot of humidity sensor is short-circuit or the display board is short circuit Eliminate short circuit phenomenon Is malfunction...
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Page 18: Maintenance Method For Common Malfunction
Service Manual 8.3 Maintenance Method for Common Malfunction 1.The Unit Can’t Start Up Possible causes Discriminating method (dehumidifier 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 19 Service Manual 4. Compressor Can't Operate Possible causes Discriminating method (dehumidifier 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 Compressor relay on the...
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Page 20: Exploded View And Parts List
Service Manual 9.Exploded View and Parts List Maintenance... - Page 21 Service Manual Part Code Description GDN20AQ-E4EBA1A GDN24AQ-E4EBA1A Product code CK051021100 CK051021200 Water Tank assy 20186546 20186546 Water Tank Bar 20196046 20196046 Water Tank 20186266 20186266 Water Tank Cover 22226100 22226100 Handle(Water Tank) 2623601006 2623601006 Float meter sub-assy 26116210 26116210 Cover of waterspout...
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Page 22: Removal Procedure
Service Manual 10.Removal Procedure Warning: disconnect power supply before removal; discharge the refrigerant completely before unsoldering the pipes. Step Procedure 1.Remove water tank assembly Pull the water tank onwards to remove the water tank assembly. water tank assembly 2.Remove filter Press the 2 clasps of filter to make the groove loosened, then pull the filter outwards to remove it. - Page 23 Service Manual Step Procedure 4.Remove electric box cover Twist off the 2 screws ate the box cover and then remove the electric box cover. screws electric box cover 5.Remove top cover humidity sensor Disassemble the wires connected to the main board/capacitor,take out the ambient sensor screw humidity sensor and ambient sensor,...
- Page 24 Service Manual Step Procedure 6.Remove front case sub-assy Twist off the 7 screws and 3 clasps used screws tor fixing the front case sub-assy and then pull out the front case sub-assy. screws front case sub-assy clasps 7.Remove cover plate cover plate Twist off the 5 screws and 3 clasps used for tightening the cover plate and then...
- Page 25 Service Manual Step Procedure 8.Remove the handle handle Twist off the screws, remove the cover and move the handle along the horizontal direction and then remove it. screws 9.Remove evaporator and condenser sub-assy condenser and evaporator assembly spots weld screw Twist off the screw behind the condenser, unsolder the soldering joint connected to the condenser and evaporator respectively...
- Page 26 Service Manual Step Procedure 12.Remove water tray Push the 4 clasps on the chassis, pull up the water tray to remove it. water tray clasps 13.Remove the power cord Twist off the screws and then remove the power cord power cord screws 14.Remove suction pipe and discharge pipe discharge pipe...
- Page 27 Service Manual Step Procedure 16.Remove castor Pull the castor then remove it, Remove the other three castors by the same method. castors 17.Remove moot handle moot handle Twist off the 6 screws used for fixing the air ductand then remove the moot handle. screws 18.Remove the fan blade Twist off the nut for fixing the fan blade...
- Page 28 Service Manual Step Procedure 20.Remove the main board Pull out the main board box then remove the main board. main board 21.Remove the capacitor capacitor Twist off the screws used for fixing the capacitor. screws Maintenance...
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Page 29: 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 30: Appendix 2: Resistance Table Of Ambient Temperature Sensor
Service Manual Appendix 2: Resistance Table of Ambient Temperature Sensor Resistance table of ambient temperature sensor (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 16.39 3.454 0.98 108.7... - Page 31 Service Manual Resistance table of ambient temperature sensor(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 4.289 1.233 129.9 19.14 4.14...
- Page 32 Service Manual Resistance table of ambient temperature sensor (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 4.08 580.6 73.83...
- Page 33 Service Manual Resistance Table of Ambient Temperature Sensor (100K) Temp( C) Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 925.998 136.845 28.638 7.918 876.141 130.752 27.600 7.676 829.261 124.961 26.606 7.443 785.155 119.456 25.652 7.218 743.636 114.221 24.737 7.000 704.532 109.242 23.858 6.790...
- Page 34 Service Manual Temp( C) Resistance(kΩ) Temp( C) Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 2.678 1.312 0.705 0.384 2.610 1.284 0.691 0.376 2.543 1.256 0.677 0.369 2.479 1.229 0.664 0.362 2.417 1.203 0.650 0.355 2.357 1.178 0.637 0.348 2.229 1.153 0.625 0.341 2.242 1.129 0.612...
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Page 35: Appendix 3: Resistance Value Table Of Humidity Sensor
Service Manual Appendix 3: Resistance Value Table of Humidity Sensor HIS-06 temperature and humidity characteristic 5 C ~ 14 Unit:KΩ Relative Temperature( humidity 5.35 4.92 4.55 4.23 3.95 3.70 3.47 3.25 3.05 2.87 5.80 5.33 4.93 4.58 4.27 4.00 3.74 3.51 3.29 3.09... - Page 36 Service Manual 1128.50 1033.61 953.39 883.90 822.61 767.78 704.83 647.37 594.51 545.56 1325.87 1213.40 1118.31 1035.94 963.29 898.30 823.48 755.17 692.34 634.16 1563.51 1430.14 1317.38 1219.71 1133.55 1056.48 967.04 885.39 810.28 740.74 1855.67 1695.83 1560.69 1443.63 1340.37 1248.00 1140.34 1042.06 951.64 867.93 2213.60...
- Page 37 Service Manual 50.20 46.55 43.12 39.89 36.83 33.93 31.76 29.69 27.71 25.82 56.00 51.92 48.08 44.47 41.05 37.80 35.35 33.02 30.79 28.65 62.80 58.20 53.88 49.80 45.95 42.29 39.51 36.87 34.34 31.92 70.00 64.95 60.21 55.74 51.51 47.50 44.33 41.31 38.42 35.65 78.80...
- Page 38 Service Manual 5.49 5.21 4.94 4.68 4.43 4.19 3.97 3.75 3.54 3.34 5.93 5.62 5.33 5.04 4.77 4.50 4.26 4.02 3.80 3.57 6.49 6.13 5.79 5.46 5.14 4.84 4.57 4.32 4.07 3.83 7.00 6.61 6.24 5.88 5.53 5.20 4.91 4.63 4.35 4.09 7.59...
- Page 39 Service Manual HIS-06 Characteristic of temperature and humidity 35 C ~ 45 Unit:KΩ Relative Temperature( humidity 1.20 1.17 1.14 1.11 1.08 1.05 1.02 1.00 0.98 0.95 0.93 1.27 1.23 1.20 1.16 1.13 1.10 1.07 1.05 1.02 1.00 0.97 1.34 1.30 1.26 1.22 1.19...
- Page 40 Service Manual 43.60 40.77 38.02 35.35 32.74 30.20 28.45 26.73 25.06 23.43 21.83 48.20 45.06 42.00 39.02 36.13 33.30 31.40 29.55 27.74 25.97 24.25 54.00 50.43 46.97 43.59 40.30 37.10 34.98 32.92 30.90 28.93 27.00 60.60 56.63 52.78 49.02 45.36 41.80 39.36 36.98...
- Page 41 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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