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International Comfort Products H9MPD100J20B1 Defrost Sensor Board
The defrost sensor control board will begin the defrost cycle in order to keep your outdoor unit from plugging up. The control board is relayed information from a specific sensor which is near the condenser somewhere, in order to agree when to begin.
Warnings to watch for in a bad AC defrost sensor board
- Your main control board may signify an error of some type referring to a bad defrost board
- The defrost feature refuses to initiate even though there is a large amount of frost on the external unit
- The system will not run due in part to the safety features installed
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