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Fujitsu AOU24RLXFZ Furnace Door Switch
A furnace door switch is a safety feature that stops the blower and ignition sequence from activating so as to stop a potential explosion. It is extremely important that the device is exchanged for a new one quickly if it is defective.
Some clues the safety door switch is failing
- The safety door switch looks chipped
- The whole system will not start with the door closed
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