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Lennox G61MPV-60C-090 Furnace Door Switch
The furnace door switch is a safety switch which stops initial fan and ignition sequence being triggered to start so as to avoid injuries. Do not try to fix it, just have it substituted for a new part as soon as possible if you find it to be faulty.
Major clues of a weak furnace door switch
- The furnace will not engage with the door closed
- The switch is worn down
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