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Carrier FY4ANF048000 Defrost Sensor Board
The defrost control board determines when to initiate an important defrosting cycle if necessary, to remove frost build-up that may accumulate. The defrost board relies on a sensor located somewhere by the condenser to ascertain when to begin.
Clues of a weak Carrier defrost sensor board
- The main circuit board could display an error number produced when the defrost board is bad
- The defrost sequence has not run for quite some time even though there is quite a bit frost built up
- The system will not work for the simple fact of frost blocking the airflow outside
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