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International Comfort Products T9MPT125L20A1 Defrost Sensor Board
The defrost sensor control board determines when or if to start the defrosting phase which assists to continue normal heating and cooling operations. The defrost board depends on a temperature sensor located near the condenser to make the decision on when to initiate the defrosting cycle.
Elements of a worsening defrost sensor board
- The HVAC system control board may throw an error of some type when the defrost board fails
- Self defrost sequence has not run for a while despite that there is a large amount frost in the way
- The system may not work at all because of the frost issue
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