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International Comfort Products GPFM36S100F Defrost Sensor Board
The defrost sensor control board determines when to initiate the defrost sequence which actually helps to remove frost build-up that may accumulate. It looks to a defrost sensor located in the outdoor unit to agree when to initiate the defrosting cycle.
Major signs of a failing defrost board
- Your HVAC system will stop working for the simple fact of the frost blocking the flow of air
- The defrost sequence has not run for a while even though there is a lot of frost that needs to be removed
- The main circuit board might issue an error code produced by a bad defrost control board
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