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Carrier 58MTA100 Furnace Door Switch
The furnace door switch is a safety switch which blocks initial fan and other risky devices from starting in order to prevent injury and fire. You should have the switch be traded for new one quickly especially if you suspect it is not working properly.
Key symptoms poorly operating furnace door switch
- The HVAC system will not start whether the door is open or closed
- The furnace door switch looks like it is breaking off
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