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Carrier FB4CNF060 Defrost Sensor Board
The defrost sensor board commences an important defrosting cycle which aids to defrost your outdoor unit. The defrost board looks to a defrost sensor located somewhere by the condenser to decide when to begin.
Elements of a bad Carrier defrost sensor board
- Most systems will end up not running at all because of too much frost
- Self defrost sequence refuses to initiate despite that there is a large amount frost on the external unit
- The main circuit board may issue an error code when the defrost board fails
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