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International Comfort Products PHF024K000A Defrost Sensor Board
The defrost sensor board instructs the outdoor unit to begin the defrost cycle which aids to remove frost build-up that may accumulate. The control board is influenced by a sensor which is near the condenser somewhere, in order to agree when the defrost cycle should begin.
Major warnings of a weak AC defrost sensor board
- Defrost mode has not run for quite some time especially when there is frost that needs to be removed
- The main control board might give out an error signal when the defrost control board refuses to initialize properly
- The system may stop functioning due in part to frost blocking the airflow outside
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