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Samsung APC3240C Furnace Door Switch
This switch blocks initial fan and ignition sequence from starting in order to prevent injury and fire. It is imperative that the switch be substituted for a new part swiftly if you suspect that it is not working.
Clues to watch for to know your safety switch on the furnace door has little life left
- The door mechanism looks like it is beat up
- The HVAC system does not operate whether the door is off or on
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