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International Comfort Products GDJ050M12B1 Furnace Door Switch
A furnace door switch is a safety feature that blocks initial fan and ignition sequence from turning on so as to stop a potential explosion. You should really have it switched out as quick as you can if you suspect that it is not working.
Symptoms poorly operating switch on the furnace door
- The furnace will not engage even when you close the door
- The furnace door switch has been broken
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