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International Comfort Products NBF100J20A1 Furnace Door Switch
A furnace door switch is a safety feature that stops the vent fan and other risky devices from activating so as to stop a potential explosion. It is imperative that the switch be substituted for a new part as soon as possible if it is damaged so as to prevent something bad happening.
Red flags the switch on your furnace door will have to be replaced
- The furnace door switch looks broken
- The furnace cannot run with the door closed
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