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International Comfort Products H9MPT125L20B1 Defrost Sensor Board
The defrost sensor board commences the defrost cycle which assists to keep the outdoor unit free from frost build-up. The defrost sensor board depends on a sensor located somewhere by the condenser to ascertain when to begin.
Red flags your outdoor defrost sensor board is dead
- Defrosting refuses to run even though there is a lot of frost that needs to be removed
- The whole system may stop working for the simple fact of frost blocking the fins on the outside unit
- The primary control board may signify a specific error code produced when the defrost board is bad
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