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International Comfort Products PAF048K000A Defrost Sensor Board
The defrost control board determines when or if to start the defrosting phase which actually helps to keep the outdoor unit free from frost build-up. The board depends on a specific sensor located in the outdoor unit to decide when to initiate the defrosting cycle.
Some warnings of an inadequate defrost board
- Self defrost sequence has not run for quite some time despite that there is a large amount frost built up
- The HVAC system control board may signify a specific error code referring to a failing defrost control board
- AC and heating system could cease to operate due in part to lack of airflow through the outdoor unit
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