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International Comfort Products H9MPV075F12A1 Furnace Door Switch
The furnace door switch is a safety switch which blocks the blower and ignition sequence from activating so as to stop a potential explosion. It is crucial to have this part replaced swiftly especially if you think it is defective.
Key symptoms of a weak safety furnace door switch
- The whole system will not fire up whether the door is open or closed
- The switch seems to be broken badly
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