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International Comfort Products T8DNL075F16A1 Furnace Door Switch
The furnace door switch is a safety switch which blocks the vent fan and other risky devices from turning on so as to avoid injuries. Do not waste time and have it changed immediately if you can, if you see that it is broken.
What are the clues to watch out for to know my safety furnace door switch is about to go out?
- The door mechanism appears to be worn
- The HVAC system will not engage whether the door is off or on
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