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Carrier FF1DNA018075AAAA Furnace Door Switch
The furnace door switch is a safety switch which inhibits the blower and ignition sequence from starting so as to stop a potential explosion. It is extremely important that the device is traded for new one immediately if you can, if you suspect that it is not working.
Easy warnings the switch on your furnace door is dying
- The HVAC system does not function even with the door closed
- The door mechanism has been wrong
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