Carrier FX4CNF024000 Limit Switch

The limit switch is a type of sensor switch in the heat exchanger that can determine when the air is warmed to a point so that it may be pushed through the ducts and out the vents. Limit switches are crucial because if the air never warms up the you will lose heat in the ducts and the vents will just blow cool air.

Signs of an unhealthy main limit switch

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Before buying or purchasing any Carrier FX4CNF024000 replacement part, do your due diligence and double check the correct model as well as make a visual inspection in order to be sure the correct replacement limit switch is being ordered. There is no need to replace the part all by yourself. Hire someone with experience in your area to do it for you.
Feel free to download your manual for help.
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