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Payne PG8JAA048070 Furnace Door Switch
A furnace door switch is a safety feature that inhibits initial fan and gas ignition from activating so as to stop a potential explosion. You should really have it changed immediately if you can, if it is damaged so as to prevent something bad happening.
Simple signals your safety switch on the furnace door will die soon
- The system cannot run whether the door is off or on
- The safety door switch seems to be not there
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