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Lennox 10ACE-024 Furnace Door Switch
The furnace door switch is a safety switch which prevents initial fan and burner being triggered to start so as to stop a potential explosion. You must have the device swapped out promptly if it is defective.
Signals the switch on your furnace door needs a replacement ASAP
- The furnace does not function even with the door closed
- The door switch appears to be messed up
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