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Carrier 48XZN030060300 Defrost Sensor Board
The defrost control board will begin the defrosting phase in order to get rid of the frost that collects on the outdoor unit. The defrost board looks to a sensor located in the outdoor unit to ascertain when to begin.
Main clues your Carrier defrost sensor board will die soon
- The main control board may show an error code when a defrost board fails to initialize
- The whole system may not run for the fact of way too much frost build-up
- Defrost mode will not initiate despite the fact that there is a lot of frost on the external unit
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