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International Comfort Products TCA024AKA5 Furnace Door Switch
The job of the furnace door switch prevents initial fan and burner from activating so as to stop a potential explosion. You should have the switch be replaced at once especially if you think it is defective.
Clues to watch for to know the switch on your furnace door has little life left
- The furnace does not fire up whether the door is off or on
- The safety door switch looks as if it has been chipped
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