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International Comfort Products H8DNL050B12B1 Furnace Door Switch
A furnace door switch is a switch that blocks initial fan and other risky devices being triggered to start so as to stop a potential explosion. You should really have it exchanged for a new one promptly if it is defective in some way or another.
What to see if the safety switch on the furnace door is about to go out?
- The system will not operate whether the door is open or closed
- The door switch is messed up
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