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International Comfort Products HAC224AKA1 Defrost Sensor Board
The defrost sensor control board instructs the outdoor unit to begin the defrost cycle which may be necessary to rid your unit of frost that can build up. The defrost board depends on a sensor which is near the condenser somewhere, in order to agree when to initiate the defrosting cycle.
Signs your defrost board will soon need to be replaced
- The defrost sequence never kicks in even though there is quite a bit frost that makes the unit run like crap
- The control board could throw an error signal referring to the failed defrost sequence
- The system will stop working for the fact of too much frost
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