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Carrier FY4ANF042000 Furnace Door Switch
The furnace door switch blocks initial fan and burner being triggered to start so as to avoid injuries. You should have the switch be traded for new one as soon as possible especially if you suspect it is not working properly.
Clues of a poorly working safety door switch
- The furnace door switch looks as if it has been eroded
- The furnace will not even begin to start even when you close the door
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If you decide on picking up or purchasing any Carrier FY4ANF042000 part, do your due diligence and make sure of the model number and also make a visual comparison so that you are positive that the right furnace door switch is the one being purchased. You do not need to install the replacement part alone. Hire someone with experience in your town or city to replace the part.
Feel free to download your manual for help.
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