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Haier CPN08XC9 Defrost Sensor Board
The defrost control board is jobbed with determining when to begin an important defrosting cycle which assists to remove frost build-up that may accumulate. The control board is relayed information from a specific sensor located in the outdoor unit to verify when the defrost cycle should begin.
Simple signals the defrost sensor board needs a replacement ASAP
- Self defrost sequence has not run for a while despite the fact that there is a lot of frost that needs to be removed
- The HVAC system control board could signify a specific error code produced when the defrost board is bad
- The whole system may stop running due to the fact of frost blocking the fins on the outside unit
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