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SPT WA-1010H Furnace Door Switch
This switch prevents the vent fan and gas ignition from activating in order to prevent injury and fire. Do not try to fix it, just have it changed at once if you see that it is broken.
Indications of a barely functioning furnace door switch
- The furnace will not begin even when you close the door
- The furnace door switch appears as though it has been chipped
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