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Carrier 58MTB100F10116 Furnace Door Switch
The furnace door switch is a safety switch which stops the fan and other risky devices from starting in order to prevent injury and fire. It is quite important to have it switched out at once especially if you think it is defective.
Major signs to watch for in a failing safety furnace door switch
- The door mechanism appears to be worn down
- The whole system does not turn on whether the door is open or closed
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