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International Comfort Products C9MPT100J16B1 Furnace Door Switch
A furnace door switch is a safety feature that inhibits the blower and burner from starting in order to prevent injury and fire. Do not try to fix it, just have it changed immediately if you can, especially if you think it is defective.
Some clues of a poorly working safety furnace door switch
- The furnace does not function whether the door is open or closed
- The door switch looks as if it has been breaking off
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