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Carrier 50XP024300 Furnace Door Switch
A furnace door switch is a safety feature that blocks the draft inducer and other risky devices from turning on so as to stop a potential explosion. You should really have it substituted for a new part quickly especially if you think it is defective.
Major indications of a defective safety switch on the furnace door
- The door switch seems to be eroded
- The furnace cannot run whether the door is off or on
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