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International Comfort Products NAC218GKA1 Furnace Door Switch
A furnace door switch is a safety feature that stops the draft inducer and other risky devices from switching on so as to avoid injuries. You should really have it switched out immediately if you can, if you find it to be faulty.
How do you know if your safety door switch is failing?
- The whole system does not turn on whether the door is open or closed
- The switch appears as though it has been breaking apart
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