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International Comfort Products T8MPN150J20B1 Furnace Door Switch
The furnace door switch is a safety switch which stops the draft inducer and gas ignition from turning on in order to prevent injury and fire. It is extremely important that the device is exchanged for a new one ASAP if you find it to be faulty.
Major red flags your safety switch on the furnace door has little life left
- The furnace door switch seems chipped
- The furnace does not fire up whether the door is open or closed
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