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Whirlpool ATR1553RPP0 Defrost Sensor Board
The defrost sensor control board will begin the defrosting phase which aids to rid your unit of frost that can build up. It is influenced by a defrost sensor which is near the condenser somewhere, in order to verify when to begin.
Signals the AC defrost sensor board is in need of replacing
- The main circuit board may issue an error number when a defrost board fails to initialize
- Defrost mode never starts especially when there is a rather large amount of frost that has built up
- Most systems will not run at all because of lack of airflow through the outdoor unit
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