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Carrier 38HDR036 Limit Switch
A normal limit switch contains a sensor in the heat exchanger that decides when the air is warm enough 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.
Elements of a dying limit type switch
- The heating and cooling system refuses to start or continue to run longer that five minutes
- The Carrier system begins to behave erratically on a regular basis
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