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Friedrich P-09 Furnace Door Switch
The furnace door switch is a safety switch which inhibits the vent fan and other risky devices from turning on so as to avoid injuries. It is important to get the part swapped out as quick as you can especially if you think it is defective.
What are some hints that my safety furnace door switch is almost dead?
- The switch has been removed
- The HVAC system does not begin to work even with the door closed
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