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Fujitsu ASU36CLX Furnace Door Switch
The furnace door switch is a safety switch which inhibits the fan and other risky devices from activating so as to avoid injuries. It is vital that this part be exchanged for a new one as quick as you can especially if you think it is defective.
Important red flags of a laboring furnace door switch
- The switch looks eroded
- The HVAC system does not even thing about starting whether the door is open or closed
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