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International Comfort Products GPCM42K100F Defrost Sensor Board
The defrost sensor board determines when to initiate the defrost cycle which assists to continue normal heating and cooling operations. The board is influenced by a specific sensor located somewhere by the condenser to make the decision on when the defrost cycle should begin.
Major signs of a declining AC defrost sensor board
- The defrost feature has not run for quite some time even when there is a large quantity of frost built up
- AC and heating system could not work at all because of lack of airflow through the outdoor unit
- The main circuit board may issue an error of some type when a defrost board fails to initialize
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