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Carrier 48GP060090300 Limit Switch
Limit switches are crucial due to the fact that if the air never warms up inside the exchanger then you will never get hot air through the ducts. A normal limit switch contains a sensor located in the furnace that determines when the heated air is warmed to a point so that it may be pushed through the ducts and out the vents.
Major warnings of a faulty main limit switch
- Your Carrier system will not begin the ignition sequence or run well longer than 10 minutes
- The whole system begins to run inconsistently on a regular basis
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