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Carrier 40QAC060 Defrost Sensor Board
The defrost control board will begin the defrost sequence which assists to continue normal heating and cooling operations. The defrost board is relayed information from a sensor that can be found near the condenser, in order to ascertain when the defrost cycle should begin.
General warnings of a poorly working AC defrost sensor board
- Unit defrost session never kicks in especially when there is a rather large amount of frost in the way
- The main board may show an error of some type if the defrost board fails
- The AC may stop working due to the amount of frost on the outdoor unit
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