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International Comfort Products HAC430AKA1 Defrost Sensor Board
The defrost sensor board determines when to initiate the defrosting phase in order to keep your outdoor unit from plugging up. The board looks to a temperature sensor located in the outdoor unit to decide when the defrost cycle should begin.
Indications your outdoor defrost sensor board is going to die
- The system will end up not running at all because of frost blocking the fins on the outside unit
- Unit defrost session never begins especially when there is frost in the way
- The control board could display an error code if the defrost board goes out
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