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International Comfort Products PGAD Furnace Door Switch
A furnace door switch is a safety feature that stops the fan and ignition sequence from turning on so as to stop a potential explosion. You should really have it substituted for a new part immediately if you can, especially if you suspect it is not working properly.
Important red flags of a poorly working safety door switch
- The system does not function whether the door is off or on
- The door mechanism looks damaged
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