Haier AFD631GW Service Manual

Also see for AFD631GB: Instructions for use

Haier AFD631GW Service Manual Manual pdf 25 page image

25SERVICE MANUALModel:AFD631GW/GB/GR25Issue 201003Rev. Ref11003S006V07-2. Main control PCB diagramThere are 4 connectors on the main control panel of CFE/AFL/AFD refrigerators.CN1 is the connector for the sensors and the door switch. Its pins from the left to right are:1: GND2: +12V3: Door switch signal. When the door is opened, GND and the signal wires are switch to conduction.When the door is open, the wires are disconnected;4-6: Null7-8: Connected to the fridge storage temperature sensor. We can test the sensor with these two wires.Its resistance in normal operation is between 6.35 and 3.88kΩ (correspond to 010 ). Theresistance at normal temperature is between 2.45 and 1.58kΩ (correspond to 2030);7-9: Connected to defrosting temperature sensor. We can test the sensor with these two wires. Itsresistance in normal operation is between 10.9 and 25.19kΩ (correspond to -10-25 ). Theresistance at normal temperature is between 2.49 and 1.61kΩ (correspond to 2030);10-11: Connected to the freezer storage temperature sensor. Resistance test is the same as thedefrosting temperature sensor;12: NullCN2 is the connector for the LED lamps and display panel:1: GND2: +5V3: Com4: Com5-6: Null7: +12V8: GNDCN3 is the connector for the power cables1: Zero line2: Live line3: Compressor (between it and the zero line)4: Null5: Heating tube for defrosting. The resistance between it and the zero is 345Ω±10%6: NullCN4 is the connector for the air door and fan:1: Feedback signal from the fan2: GND of the fan3: +12V of the fan4: fan +12V5-6: Null7-9: Motor of the refrigeration air door