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International Comfort Products NHP024AKA1 Defrost Sensor Board
The defrost sensor control board determines when to initiate the defrost cycle if necessary, to get rid of the frost that collects on the outdoor unit. The defrost sensor board looks to a specific sensor located somewhere by the condenser to verify when the defrost cycle should begin.
Hints your defrost board is dead
- Defrost mode has not run for quite some time even though there is a lot of frost on the unit
- The HVAC system could stop operating because of the frost blocking the flow of air
- The HVAC system control board may show an error signal if the defrost control board fails
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