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International Comfort Products NAC248GKA1 Defrost Sensor Board
The defrost control board determines when to initiate an important defrosting cycle which may be needed in order to remove frost build-up that may accumulate. The defrost board looks to a sensor located near the condenser to determine when to begin.
Subtle cues of a weak AC defrost sensor board
- The system may not work due to the fact of the amount of frost on the outdoor unit
- The defrost sequence refuses to initiate especially when there is a rather large amount of frost on the external unit
- The primary control board may show an error code produced by a failing defrost board
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