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International Comfort Products NDC7050BFA2 Limit Switch
The reason limit switches exist is 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. A normal limit switch contains a sensor in the heat exchanger that can determine if and when the air is warmed to a point so that it may be pushed through the ducts and out the vents.
What are the clues to watch out for to know my chief limit switch is in need of a replacement?
- The heating and cooling system will not begin or will not stay running longer than 30 seconds
- The system begins to initiate and then stops on more than one occasion
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