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Carrier FV4BNF005000 Defrost Sensor Board
The defrost sensor board instructs the outdoor unit to begin the defrosting phase which may be necessary to rid your unit of frost that can build up. The control board is influenced by a sensor located somewhere by the condenser to decide when to initiate the defrosting cycle.
Major symptoms of an unhealthy defrost board
- Air conditioning may cease to operate for the fact of too much frost
- Self defrost sequence never begins even though there is a lot of frost on the external unit
- The main circuit board might issue an error signal referring to a failing defrost control board
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Before you decide on buying or ordering a new Carrier FV4BNF005000 replacement part do your best and make sure of the model number and also make a visual inspection so that you are positive that the correct replacement defrost sensor board is the one being purchased. There is no rule that says you have to replace the part all by yourself. Hire someone with experience in your area to hire and install the part for you.
Feel free to download your manual for help.
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