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Samsung AVMDH072CA0 Furnace Door Switch
The furnace door switch is a safety switch which prevents the blower and ignition sequence from starting so as to avoid injuries. You should really have it switched out ASAP if you suspect that it is not working.
Major symptoms the switch on your furnace door is not going to last much longer
- The furnace will not even begin to start whether the door is open or closed
- The door mechanism appears as though it has been bent
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