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Carrier 52F Defrost Sensor Board
The defrost sensor board controls if and when to commence the defrost sequence which may be needed in order to keep your outdoor unit from plugging up. The defrost sensor board relies on a defrost sensor which is near the condenser somewhere, in order to decide when to begin.
Clues to watch for to know your Carrier defrost sensor board has very little life left
- The defrost feature refuses to initiate even though there is a lot of frost that needs to be removed
- AC and heating system could stop running due to the fact of the amount of frost on the outdoor unit
- The primary control board may issue an error signal referring to a bad defrost board
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