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SPT WA-1420E Furnace Door Switch
This switch blocks the fan and burner being triggered to start in order to prevent injury and fire. It is quite important to have it traded for new one as soon as possible especially if you think it is defective.
Key clues of a laboring safety switch on the furnace door
- The door switch looks like it is bent
- The furnace will not run even with the door closed
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