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International Comfort Products T9MPT050F12A1 Defrost Sensor Board
The defrost sensor board controls when to launch the defrost cycle which may be needed in order to keep your outdoor unit from plugging up. The defrost sensor board is relayed information from a temperature sensor located near the condenser to make the decision on when to begin.
Main clues the defrost sensor board is in dire need of a replacement
- The defrost sequence does not begin even though there is quite a bit frost on the external unit
- The main circuit board may show an error signal referring to a bad defrost board
- Air conditioning may not work for the fact of the frost blocking the flow of air
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