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Whirlpool ATR0952BPP0 Defrost Sensor Board
The defrost control board determines when or if to start the defrosting phase which aids to remove frost build-up that may accumulate. The control board looks to a sensor located in the outdoor unit to make the decision on when the defrost cycle should begin.
Key signs to watch for in a failing defrost board
- The main circuit board may show a specific error code produced by too much frost
- The whole system may stop functioning for the simple fact of frost blocking the fins on the outside unit
- Defrosting never kicks in despite the fact that there is quite a bit frost that has built up
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