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International Comfort Products PYMC Furnace Door Switch
A furnace door switch is a safety feature that stops the vent fan and ignition sequence from switching on so as to avoid injuries. You should have the switch be substituted for a new part as quick as you can if you see that it is broken.
Important hints the safety door switch is dead
- The door mechanism has been worn down
- The furnace cannot run even when you close the door
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