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Whirlpool ATR1252CPP0 Defrost Sensor Board
The defrost control board instructs the outdoor unit to begin the defrost cycle which may be needed in order to defrost your outdoor unit. The board depends on a temperature sensor which is near the condenser somewhere, in order to agree when to initiate the defrosting cycle.
Easy warnings of a poorly working defrost sensor board
- Unit defrost session never kicks in especially when there is a rather large amount of frost built up
- The main control board may show an error of some type produced by too much frost
- The system will not run because of the frost blocking the flow of air
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