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Carrier 45-4SI Defrost Sensor Board
The defrost control board controls when to launch the defrost sequence which may be needed in order to rid your unit of frost that can build up. It looks to a defrost sensor that can be found near the condenser, in order to ascertain when the defrost cycle should begin.
Symptoms the defrost sensor board is failing
- The main circuit board may signify a particular error code referring to a failing defrost control board
- Defrost mode never initiates even though there is a lot of frost that makes the unit run like crap
- The whole system may cease to operate for the simple fact of the frost blocking the flow of air
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Before you decide on buying or purchasing any Carrier 45-4SI part do your best and make sure of the correct model and also make a visual inspection so that you are positive that the right defrost sensor board is the one being purchased. If you are unsure about the correct way of installing the defrost sensor board on your own then it would be in your best interest to contact a professional to do the work for you.
Feel free to download your manual for help.
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