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Carrier 38YCC048 Limit Switch
A normal limit switch contains a sensor located in the furnace that can determine if and when the air is actually warm enough for the air to begin normal home circulation. One big reason why limit switches are designed that way is because if the air is too cool inside the furnace to begin with, then you will never get hot air through the ducts.
Key symptoms of a bad limit type switch
- The heating and AC system will not start or run well longer than a minute
- Your system starts to become inconsistent on more than one occasion
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