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Friedrich MW30C3G Furnace Door Switch
The furnace door switch is a safety switch which blocks initial fan and other risky devices from switching on in order to prevent injury and fire. It is crucial to have this part traded for new one immediately if you can, if it is causing you problems.
Major clues your furnace door switch is dead
- The safety door switch is broken completely
- The whole system does not operate with the door closed
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