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Carrier 50JZ-A Furnace Door Switch
A furnace door switch is a switch that inhibits the vent fan and ignitor from switching on in order to prevent injury and fire. It is extremely important that the device is changed ASAP if you suspect that it is not working.
Key clues of a faulty switch on the furnace door
- The furnace will not begin even with the door closed
- The door mechanism looks messed up
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