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Carrier 38HDR060 Defrost Sensor Board
The defrost sensor board determines when or if to start the defrost cycle which may be necessary to get rid of the frost that collects on the outdoor unit. The defrost board is relayed information from a defrost sensor located near the condenser to agree when to initiate the defrosting cycle.
Clues your defrost board is in dire straights
- Defrosting refuses to initiate especially when there is a rather large amount of frost that has built up
- The primary control board may issue an error code when the defrost board fails
- Most systems will stop running at all because of the amount of frost on the outdoor unit
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