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Carrier 48XZ042090300 Limit Switch
A normal limit switch has a sensor located in the furnace that can determine when the heated air is warm enough for the blower to be activated. Limit switches are built due to the fact that if the air inside the furnace is too cool then the house will never get warm enough.
Hints of a faulty limit switch
- The Carrier system is starting to become unpredictable repeatedly
- The HVAC system will not start or run well like it ought to
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