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Nordyne MS3BC060KA Furnace Door Switch
The job of the furnace door switch inhibits initial fan and ignition sequence from starting so as to avoid injuries. You should have the switch be replaced at once if it is defective.
Major signs the safety door switch needs replacing ASAP
- The HVAC system will not even begin to start whether the door is open or closed
- The switch looks as if it has been bent badly
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