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Nordyne MS3BA036KA Furnace Door Switch
The job of the furnace door switch stops the vent fan and burner from starting so as to avoid injuries. You should have the switch be changed immediately if you can, if it is damaged so as to prevent something bad happening.
Main clues your furnace door switch should be replaced
- The system does not even thing about starting even with the door closed
- The door mechanism looks like it is breaking off
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