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Carrier 58CTA09010014 Furnace Door Switch
The furnace door switch is a safety switch which stops the blower and ignition sequence from starting so as to avoid injuries. It is imperative that the switch be substituted for a new part as soon as you can if it is defective.
Major symptoms your furnace door switch will have to be replaced
- The door mechanism looks like it is fallen off
- The furnace does not run whether the door is open or closed
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