SERVICE MANUAL
Model: HB21FC45N*
39
Issue 2010-07-05
Rev. Ref1007S019V0
9-4. The error code
9-4-1.When the refrigerator sensor (R SNR) is in malfunction, it shows F1 on cabinet
display panel.
How to check:
1. Check whether the connector of main control PCB is in right position.
2.Test the resistance between two white wire(CON1), the normal resistance should be 1～6K ohm
approximately, if the ohm number is infinite or zero, it means the sensor or the connecting wire is
defective.
9-4-2. When the ambient temperature sensor (RT SNR) is in malfunction, it shows F3 on
cabinet display board.
How to check:
1. Check whether the connector of main control PCB is in right position;
2. Test the resistance between two white wires(CON5), the normal resistance should be 1～6K ohm
approximately, if the ohm number is infinite or zero, it means the sensor or the connecting wire is
defective.
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