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International Comfort Products PGS Defrost Sensor Board
The defrost sensor control board determines when or if to start the defrost sequence which aids to keep the outdoor unit free from frost build-up. The board looks to a defrost sensor located somewhere by the condenser to agree when the defrost cycle should begin.
Major indications the defrost sensor board will soon need to be replaced
- The defrost sequence refuses to initiate despite the fact that there is a lot of frost in the way
- The primary control board could display a type of error code when encountering a problem
- Most systems will end up not running due to lack of airflow through the outdoor unit
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