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Carrier 25HPA318A0030010 Defrost Sensor Board
The defrost control board is jobbed with determining when to begin the defrost cycle if necessary, to defrost your outdoor unit. The control board depends on a defrost sensor that can be found near the condenser, in order to decide when to begin.
What warnings should I watch out for to know if my defrost sensor board is about to go out?
- Unit defrost session has not run for quite some time especially when there is frost that has built up
- The system may stop running at all because of frost blocking the fins on the outside unit
- The primary control board may issue a particular error code produced when the defrost board is bad
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