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Carrier 50SX042300 Furnace Door Switch
The furnace door switch is a safety switch which inhibits initial fan and other risky devices from activating so as to avoid injuries. It is extremely important that the device is swapped out as quick as you can if it is defective in some way or another.
Easy warnings to watch for in a bad safety switch on the furnace door
- The HVAC system will not operate with the door closed
- The switch appears as though it has been bent badly
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