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Carrier 50GL042300 Defrost Sensor Board
The defrost sensor board is jobbed with determining when to begin an important defrosting cycle if necessary, to keep your outdoor unit from plugging up. The defrost sensor board is influenced by a sensor which is near the condenser somewhere, in order to decide when to initiate the defrosting cycle.
Major symptoms of an inadequate defrost sensor board
- Self defrost sequence never kicks in despite the fact that there is a lot of frost on the outdoor unit
- The AC may not work at all because of the safety features installed
- The main control board may throw an error number if the defrost board goes out
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