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Mitsubishi MSZ-09UN Furnace Door Switch
The furnace door switch is a safety switch which stops the draft inducer and ignitor from switching on so as to avoid injuries. It is vital that this part be changed quickly if you see that it is broken.
What happens when my safety door switch is almost going bad?
- The door mechanism looks like it is removed
- The furnace does not begin to work even with the door closed
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