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International Comfort Products NTC7100BHA1 Defrost Sensor Board
The defrost sensor control board will determine when to initiate the defrost cycle which may be necessary to remove frost build-up that may accumulate. The control board relies on a specific sensor located in the outdoor unit to agree when to initiate the defrosting cycle.
Simple indications to watch for in a bad defrost sensor board
- Most systems will not run due to the fact of the frost blocking the flow of air
- The main control board could display an alphanumeric error code when the defrost control board refuses to initialize properly
- The defrost sequence does not begin even though there is excessive frost on the unit
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