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International Comfort Products NAC230GKA1 Defrost Sensor Board
The defrost sensor control board controls when to launch the defrost sequence if necessary, to keep the outdoor unit free from frost build-up. The defrost board depends on a temperature sensor located near the condenser to agree when the defrost cycle should begin.
Simple indications of an unhealthy defrost board
- The primary control board could display a specific error code when encountering a problem
- The whole system may not operate because of way too much frost build-up
- Unit defrost session never runs even though there is a lot of frost on the outdoor unit
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