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International Comfort Products NHP024AKA1 Furnace Door Switch
A furnace door switch is a safety feature that stops the draft inducer and ignition sequence from starting so as to avoid injuries. You should have the switch be traded for new one as soon as you can especially if you suspect it is not working properly.
Some clues the safety door switch is dying
- The whole system cannot run whether the door is off or on
- The safety door switch is chipped
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