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International Comfort Products NAC224AKA1 Furnace Door Switch
This switch blocks the blower and ignition sequence from activating so as to stop a potential explosion. Do not waste time and have it replaced promptly if it is damaged so as to prevent something bad happening.
Key signs of an ineffective safety door switch
- The furnace will not operate even when you close the door
- The switch appears as though it has been breaking off
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