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Carrier 58MCA Defrost Sensor Board
The defrost sensor control board instructs the outdoor unit to begin the defrost cycle which may be necessary to get rid of the frost that collects on the outdoor unit. The board is influenced by a defrost sensor located somewhere by the condenser to decide when to begin.
What warnings are present when my Carrier defrost sensor board is dying?
- Defrosting never initiates even when there is a large quantity of frost that makes the unit run like crap
- Your system could stop operating due to the fact of the safety issue that the frost poses
- The primary control board could throw an error number referring to a failing defrost control board
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