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International Comfort Products PGF048H120F Furnace Door Switch
A furnace door switch is a safety feature that blocks initial fan and other risky devices from switching on in order to prevent injury and fire. Do not try to fix it, just have it swapped out immediately if you can, if it is defective in some way or another.
Main clues your safety switch on the furnace door needs to be replaced
- The furnace door switch seems broken completely
- The system does not function whether the door is open or closed
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