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Lennox HP13-024 Furnace Door Switch
A furnace door switch is a safety feature that blocks the vent fan and ignitor from activating so as to stop a potential explosion. Do not waste time and have it exchanged for a new one immediately if you can, if you see that it is broken.
Clues the switch on your furnace door is going to die
- The door mechanism looks as if it has been worn
- The furnace does not fire up even with the door closed
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