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International Comfort Products VNK125N20A1 Limit Switch
A normal limit switch has a sensor in the heat exchanger that makes the determination when the air is warmed to a point for the air to begin normal home circulation. Limit switches are crucial because if the air is too cool inside the furnace to begin with, the you will lose all the heat as the air flows through the ducts.
How do you know when your chief limit switch is about to go out?
- The International Comfort Products system begins to become inconsistent time after time
- System will not begin the ignition sequence or run for any length of time
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