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Lennox G40DF-48C-090X Furnace Door Switch
The furnace door switch prevents the fan and ignitor from activating so as to stop a potential explosion. You should have the switch be substituted for a new part as soon as you can if it is defective in some way or another.
What are the indications that my safety switch on the furnace door is crapping out?
- The switch looks as if it has been damaged
- The furnace will not operate whether the door is off or on
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Before you decide on buying or ordering a replacement furnace door switch for your Lennox G40DF-48C-090X, do your due diligence and make sure of the model number as well as make a visual inspection so that you are positive that the right furnace door switch is being ordered. There is no rule that says you have to install it yourself. Locate a pro in your community to do the job for you.
Feel free to download your manual for help.
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