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International Comfort Products NDN6100KFA1 Furnace Door Switch
A furnace door switch is a safety feature that prevents the vent fan and ignitor being triggered to start so as to stop a potential explosion. It is extremely important that the device is substituted for a new part quickly if it is defective.
Signs your safety switch on the furnace door will need to be replaced
- The furnace will not even begin to start whether the door is open or closed
- The switch looks messed up
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