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International Comfort Products NAC042GKA1 Furnace Door Switch
A furnace door switch is a safety feature that stops the draft inducer and ignition sequence from switching on so as to stop a potential explosion. It is important to get the part traded for new one promptly if it is defective.
Major indications of a declining safety switch on the furnace door
- The HVAC system does not even thing about starting with the door closed
- The door mechanism seems broken
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