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International Comfort Products PGS042K080F Furnace Door Switch
The furnace door switch is a safety switch which inhibits the fan and burner from turning on in order to prevent injury and fire. It is important to get the part swapped out immediately if you can, if it is defective.
Important clues to watch for in a failing switch on the furnace door
- The door switch looks fallen off
- The whole system will not fire up even when you close the door
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