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International Comfort Products GNE050B12A1 Defrost Sensor Board
The defrost control board initiates the defrost sequence which may be needed in order to remove frost build-up that may accumulate. It depends on a temperature sensor located in the outdoor unit to make the decision on when to begin.
Major warnings of a poorly working defrost board
- Self defrost sequence never begins especially when there is a rather large amount of frost on the external unit
- Your HVAC system will stop running at all because of the amount of frost on the outdoor unit
- The main board might issue an error code produced by a bad defrost control board
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