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Carrier 38YXA060 Defrost Sensor Board
The defrost control board will determine when to initiate the defrosting phase which assists to keep the outdoor unit free from frost build-up. The control board depends on a defrost sensor located somewhere by the condenser to agree when the defrost cycle should begin.
Warnings the AC defrost sensor board is in need of replacing
- Defrost session has not run for a while even though there is a lot of frost on the external unit
- The control board might issue an error of some type referring to the failed defrost sequence
- The whole system may stop running at all because of frost blocking the airflow outside
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