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International Comfort Products NNE125J20A1 Furnace Door Switch
This switch prevents the vent fan and gas ignition from starting in order to prevent injury and fire. Do not try to fix it, just have it replaced as soon as you can if it is defective.
Major signs your safety switch on the furnace door is in dire need of a replacement
- The switch looks as if it has been breaking off
- The furnace does not function whether the door is open or closed
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