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International Comfort Products PGAA36E1K1 Defrost Sensor Board
The defrost control board commences the defrosting phase in order to get rid of the frost that collects on the outdoor unit. The defrost sensor board looks to a specific sensor located near the condenser to verify when the defrost cycle should begin.
Main clues your outdoor defrost sensor board is dying
- Defrost session never starts especially when there is a rather large amount of frost in the way
- The AC may not work due in part to lack of airflow through the outdoor unit
- The primary control board may issue a particular error code if the defrost control board fails
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