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Lennox G40DF-36B-090 Furnace Door Switch
The furnace door switch blocks the fan and gas ignition being triggered to start so as to stop a potential explosion. You should have the switch be replaced as soon as possible if it is defective in some way or another.
Key clues of an ineffective safety door switch
- The furnace does not fire up whether the door is off or on
- The switch appears to be not there
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Before you decide on buying or ordering a replacement furnace door switch for your Lennox G40DF-36B-090, do your due diligence and double check the model number as well as make a visual inspection in order to be sure the correct furnace door switch is being ordered. It is easy to replace a furnace door switch on your Lennox G40DF-36B-090 as long as you know how to and have the time and tools to replace it.
Feel free to download your manual for help.
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