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Whirlpool ATE1255RPP0 Defrost Sensor Board
The defrost control board instructs the outdoor unit to begin the defrosting phase which helps to continue normal heating and cooling operations. The board is relayed information from a temperature sensor located near the condenser to make the decision on when to begin.
Clues to watch for to know the defrost sensor board is in dire straights
- Defrost mode does not begin even when there is a large quantity of frost in the way
- Air conditioning may end up not running at all because of the amount of frost on the outdoor unit
- The HVAC system control board may issue an error code when a defrost board fails to initialize
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