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Whirlpool ATR1552CPP0 Defrost Sensor Board
The defrost control board commences an important defrosting cycle in order to keep the outdoor unit free from frost build-up. The control board looks to a sensor that can be found near the condenser, in order to determine when to initiate the defrosting cycle.
Cues of an ineffective defrost sensor board
- Air conditioning may end up not running at all because of lack of airflow through the outdoor unit
- Defrost mode never kicks in despite the fact that there is a lot of frost built up
- The main board may signify an alphanumeric error code if the defrost board goes out
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