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Carrier 48XPN024040300 Limit Switch
A normal limit switch has a sensor in the air handler that decides if and when the air is actually warm enough for the blower to be activated. This is important due to the fact that if the air never warms up inside the exchanger then the house will never get warm enough.
Red flags critical limit switch will not live much longer
- The heating and cooling system will not even start or run well for any significant length if time
- The Carrier system is starting to become unpredictable often
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