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International Comfort Products C8DNL100F14B1 Furnace Door Switch
The furnace door switch is a safety switch which prevents the draft inducer and ignitor from turning on so as to stop a potential explosion. It is extremely important that the device is substituted for a new part ASAP if you find it to be faulty.
Subtle cues of a weak furnace door switch
- The furnace will not start with the door closed
- The door switch appears to be breaking apart
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