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Carrier 48GP060130300 Furnace Door Switch
The furnace door switch is a safety switch which prevents the vent fan and burner being triggered to start so as to stop a potential explosion. Do not try to fix it, just have it traded for new one at once if it is defective in some way or another.
Red flags of a bad safety switch on the furnace door
- The switch is beat up
- The furnace does not turn on whether the door is open or closed
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