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Whirlpool ATR1255BPP0 Defrost Sensor Board
The defrost sensor control board determines when or if to start an important defrosting cycle in order to keep the outdoor unit free from frost build-up. The defrost board is relayed information from a defrost sensor that can be found near the condenser, in order to determine when to initiate the defrosting cycle.
Indications of a bad outdoor defrost sensor board
- AC and heating system could not run due in part to way too much frost build-up
- The main control board may issue a particular error code produced by too much frost
- Defrost session never kicks in especially when there is a rather large amount of frost on the outdoor unit
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