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Trane TCP036F300AC Furnace Door Switch
The job of the furnace door switch prevents the draft inducer and gas ignition from turning on in order to prevent injury and fire. Do not try to fix it, just have it exchanged for a new one as quick as you can if you see that it is broken.
Major clues poorly operating safety door switch
- The system cannot run whether the door is open or closed
- The switch looks like it is stuck
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