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International Comfort Products C9MPT125L20A1 Furnace Door Switch
A furnace door switch is a safety feature that prevents the fan and ignition sequence from activating so as to avoid injuries. Do not try to fix it, just have it exchanged for a new one swiftly if it is not working in order to prevent injuries.
Clues the safety door switch is dead
- The HVAC system does not operate even with the door closed
- The door mechanism appears to be eroded
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