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Carrier 24ABR360A0032010 Furnace Door Switch
The furnace door switch blocks the vent fan and burner from activating in order to prevent injury and fire. You should have the switch be changed at once if it is defective in some way or another.
Important red flags of an inadequate safety door switch
- The switch has been breaking apart
- The HVAC system does not begin to work whether the door is open or closed
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