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Fujitsu ASU30CLX Furnace Door Switch
The furnace door switch is a safety switch which prevents the vent fan and ignition sequence being triggered to start in order to prevent injury and fire. You should really have it substituted for a new part swiftly if it is defective in some way or another.
Known indicators the your safety switch on the furnace door is in need of a replacement?
- The system does not operate with the door closed
- The door switch appears as though it has been eroded
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