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Carrier FC4B Furnace Door Switch
The job of the furnace door switch blocks the blower and ignition sequence from switching on so as to stop a potential explosion. You must have the device substituted for a new part at once if it is causing you problems.
Red flags of an unhealthy safety switch on the furnace door
- The system does not run with the door closed
- The door switch looks damaged
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Before buying or purchasing a replacement furnace door switch for your Carrier FC4B, do your due diligence and make sure of the correct model and also make a visual inspection so that you are positive that the right furnace door switch is the one being purchased. Installation of the furnace door switch is a breeze if you know what you are doing and have the tools to do it right.
Feel free to download your manual for help.
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