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International Comfort Products PGS048L120F Defrost Sensor Board
The defrost sensor control board initiates an important defrosting cycle which actually helps to keep the outdoor unit free from frost build-up. It looks to a specific sensor located in the outdoor unit to decide when to initiate the defrosting cycle.
Subtle hints your outdoor defrost sensor board is in dire need of a replacement
- The main control board might give out a particular error code if the defrost board fails
- The defrost feature never initiates even though there is a large amount of frost built up
- Most systems will not operate at all because of frost blocking the airflow outside
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