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Nordyne M1BC086 Limit Switch
Limit switches are crucial because if the air is too cool inside the furnace to begin with, the you will lose heat in the ducts and the vents will just blow cool air. A normal limit switch contains a sensor in the heat exchanger that senses, or governs, when the air is warmed to a point for the blower to be activated.
What symptoms are present when the chief limit switch is on its last leg?
- The system starts to runs uneven time after time
- System will not initiate or continue to run longer than a minute
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