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Haier HPD10XCM Defrost Sensor Board
The defrost control board commences an important defrosting cycle if necessary, to continue normal heating and cooling operations. It looks to a temperature sensor located in the outdoor unit to determine when to initiate the defrosting cycle.
General warnings of a poorly working Haier defrost sensor board
- The HVAC system control board could signify an error code if the defrost board goes out
- AC and heating system could cease to operate at all because of the frost blocking the flow of air
- The defrost feature does not begin despite the fact that there is a lot of frost built up
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