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International Comfort Products NAC030AKA1 Defrost Sensor Board
The defrost control board controls if and when to commence the defrost cycle which may be needed in order to rid your unit of frost that can build up. The board looks to a defrost sensor which is near the condenser somewhere, in order to agree when to initiate the defrosting cycle.
Some clues your outdoor defrost sensor board will soon need to be replaced
- Defrost session never runs even when there is a large quantity of frost on the outdoor unit
- Most systems will stop functioning for the simple fact of way too much frost build-up
- The main board might give out an error of some type if the defrost board fails
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