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International Comfort Products NTC7125BKA1 Furnace Door Switch
The furnace door switch is a safety switch which inhibits the draft inducer and other risky devices from turning on so as to stop a potential explosion. You should really have it switched out immediately if you can, if it is not working in order to prevent injuries.
Major signs the switch on your furnace door has little life left
- The door mechanism is eroded
- The whole system does not function even with the door closed
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