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Friedrich P-12 Furnace Door Switch
This switch prevents the blower and ignitor from activating so as to stop a potential explosion. Do not try to fix it, just have it changed swiftly if it is defective in some way or another.
Major warnings the switch on your furnace door has very little life left
- The furnace does not turn on whether the door is open or closed
- The switch looks like it is not there
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Before buying or ordering any Friedrich P-12 replacement part, do your due diligence and cross-check the model number and also make a visual comparison so that you are positive that the proper replacement furnace door switch is the one being purchased. There is no need to install it yourself. Find a professional locally to replace the part.
Feel free to download your manual for help.
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