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International Comfort Products C9MPD125L20C1 Furnace Door Switch
The furnace door switch is a safety switch which blocks the fan and gas ignition from switching on so as to stop a potential explosion. Do not try to fix it, just have it traded for new one as soon as possible if it is defective.
Major signs your furnace door switch is dying
- The furnace does not fire up whether the door is open or closed
- The switch looks as if it has been wrong
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