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International Comfort Products H9MPT050F12B1 Defrost Sensor Board
The defrost control board controls if and when to commence an important defrosting cycle which may be necessary to rid your unit of frost that can build up. The board relies on a temperature sensor located in the outdoor unit to make the decision on when the defrost cycle should begin.
Clues of an ineffective defrost board
- Defrost session will not kick in despite the fact that there is quite a bit frost built up
- The control board might issue a specific error code produced when the defrost control board fails to receive a signal
- Air conditioning may stop operating at all because of the frost issue
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