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International Comfort Products C8DNL100L20B1 Limit Switch
A normal limit switch is a switch located in the furnace that makes the determination if and when the air is warm enough so that it may be pushed through the ducts and out the vents. Limit switches are crucial because if the air never warms up then the house will never get warm enough.
Simple indications of a weakening critical limit switch
- System will not even start or run well as it should
- The system starts to shut down unexpectedly on more than one occasion
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