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Fujitsu AOU12RL2 Furnace Door Switch
This switch blocks the blower and ignitor being triggered to start so as to avoid injuries. It is imperative that the switch be switched out as soon as you can especially if you think it is defective.
Major signs the safety door switch is in dire straights
- The whole system does not function even when you close the door
- The furnace door switch looks as if it has been broken badly
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