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International Comfort Products T9MPD075F12C1 Defrost Sensor Board
The defrost control board determines when to initiate an important defrosting cycle which helps to keep the outdoor unit free from frost build-up. The defrost board relies on a sensor located near the condenser to ascertain when the defrost cycle should begin.
Chief elements of a poorly working AC defrost sensor board
- The primary control board may show an error signal produced by a bad defrost control board
- The system will not operate for the simple fact of the frost blocking the flow of air
- The defrost sequence does not begin especially when there is a rather large amount of frost built up
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