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Carrier FB4CNF030 Defrost Sensor Board
The defrost control board will begin the defrost sequence which aids to get rid of the frost that collects on the outdoor unit. It looks to a defrost sensor located in the outdoor unit to make the decision on when to begin.
What red flags are there that my AC defrost sensor board is dying?
- Air conditioning may not operate for the simple fact of the frost blocking the flow of air
- The defrost feature never begins even though there is quite a bit frost on the unit
- The main board might issue an error signal produced when the defrost control board fails to receive a signal
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Before buying or purchasing any Carrier FB4CNF030 part, do your due diligence and cross-check the correct model as well as make a visual inspection in order to be sure the correct defrost sensor board is being ordered. Installation of a new defrost sensor board can be quite easy if you have the know-how and have the proper tools to get it done.
Feel free to download your manual for help.
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