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International Comfort Products H8MPN050B12A1 Defrost Sensor Board
The defrost sensor board is jobbed with determining when to begin an important defrosting cycle which aids to keep the outdoor unit free from frost build-up. The defrost board depends on a specific sensor located somewhere by the condenser to make the decision on when to initiate the defrosting cycle.
Important clues of a faulty outdoor defrost sensor board
- The HVAC system could stop working because of lack of airflow through the outdoor unit
- The defrost feature does not begin even though there is quite a bit frost in the way
- The primary control board may throw an error of some type referring to a bad defrost board
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