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Service Manual Change for Life Service Manual Models: GDN12AJ-K4EBC1A GDN12AJ-K4EBC1B GDN16AJ-K4EBC1A (Refrigerant R134a) GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...
Service Manual 2.Specifications 1.GDN12AJ-K4EBC1A Model GDN16AJ-K4EBC1A 2.GDN12AJ-K4EBC1B 1.CK051012901/CK051012902 CK051013001 Product Code 2.CK051019102 CK051013003 Rated Voltage 220-240 220-240 Power Supply Rated Frequency Phases Rated Dehumidifying Volume 0.23 Power Input Power Current Set Humidity Range 35~80 35~80 Air Flow Volume(H/M/L) 115/-/100 115/-/100...
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.
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 TUBE TEMP.SENSOR FAN MOTOR TUBE YEGN BN(BK) AC-L BU(WH) POWER COMP YEGN(GN) HUMIDITY...
Service Manual 5.2 PCB Printed Diagram Silk Screen on Main Board ● Top view No. Name Description Name Description Needle stand of board Connect to neutral wire Connect to display board Interface of neutral wire connection wire of commercial wire Needle stand of fan Connect to fan Interface of compressor Connect to compressor...
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Service Manual Silk Screen on Display Board ● Top view 1 Timer button 8 Indicator of dehumidifying continuously 15 Indicator of high fan speed Connection between humidity sensor 2 Buzzer 16 Button for setting humidity (+) (needle stand) 3 Fan speed button 10 Power indicator Indicator of mid fan speed Needle stand for tube...
Service Manual 6.Function and Control 6.1 Control Panel Instruction High and Low fan indicator lights Bucket full light indicates bucket needs to be emptied or it is not in the proper place 4 hour or 2 hour Continuous operation on delay on/off indicator light indicator lights...
Service Manual 6.2 Introduction of Basic Mode Function 1. Basic functions of system (1) Drying mode ① Dry conditions and process: under operation status a. When set humifity≤ambient humidity-5%, compressor and fan will operate. b. When set humidity≥ambient humidity+5%, compressor stop operation and fan will stop operation after 3min. c.
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Service Manual FILTER button and then this indicator is off. BUCKET FULL indicator: the indicator blinks if bucket full protection is occurred or the water tank hasn’t been installed well. (3) Timer OFF control 2h or 4h timer OFF can be set. Timer off can be set under on status. Timer setting is recorded every 30min by memory function. (4) Display of nixie tube (green) Under on status, the nixie tube displays current humidity.
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.
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;...
Service Manual 8.2 Malfunction Detection Flowchart 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. Is there short circuit due to trip over of the par ts? Make the parts upright...
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.
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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...
Service Manual Warning: disconnect power supply before 10.Removal Procedure removal; discharge the refrigerant completely before unsoldering the pipes. GDN12AJ-K4EBC1A GDN16AJ-K4EBC1A GDN12AJ-K4EBC1B Take GDN12AJ-K4EBC1A GDN16AJ-K4EBC1A for example. Steps Procedure Before disassembly Remove tank Draw the tank outwards to remove the tank.
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Service Manual Steps Procedure rear case Remove rear case Loosen 2 clasps on the filter and then remove filter the filter. Remove 6 connection screws fixing rear case. Remove 2 wire clamps and then remove rear case. wire clamps screws top cover Remove top cover Remove connection screws fixing top cover...
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Service Manual Steps Procedure Remove air duct Remove 2 connection screws between air duct and water tray. Lift the air duct up to remove it. a. Remove cover plate ( air duct) Remove 2 connection screws and then remove the cover plate. b.
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Service Manual Steps Procedure evaporator condenser Remove condenser and evaporator Unsolder pipe connecting to aspiration/ discharge pipe. Then remove condenser and evaporator. (Note: before unsoldering, discharge refrigerant completely. Remove electric box cover and electric box Loosen 5 clasps between electric box cover electric box cover and electric box.
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Service Manual Steps Procedure discharge pipe Remove aspiration and discharge pipes Unsolder pipe connecting to compressor. aspiration pipe Then remove aspiration and discharge pipes. compressor Remove compressor Remove 3 hold-down nuts of compressor nuts and then remove compressor. Remove power cord Remove 2 screws showing in the picture then remove wire clamp.
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 (℉)...