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Carrier FE4ANB006000AAAA Furnace Door Switch
The furnace door switch stops the blower and ignition sequence from switching on so as to avoid injuries. You should have the switch be changed promptly if it is causing you problems.
Key indicators that my safety door switch is crapping out?
- The HVAC system does not fire up whether the door is open or closed
- The furnace door switch appears to be bent
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