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International Comfort Products APFM Defrost Sensor Board
The defrost sensor control board commences the defrost cycle if necessary, to defrost your outdoor unit. The board is relayed information from a sensor located near the condenser to agree when to initiate the defrosting cycle.
Important clues of a barely functioning AC defrost sensor board
- Defrosting never begins even though there is a large amount of frost built up
- The whole system may stop running because of the safety features installed
- The main board may signify a particular error code if the defrost board goes out
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