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Carrier KFCEH1501F15 Limit Switch
The limit switch has a sensor located in the furnace that makes the determination when the air is warmed to a point for the main blower to kick in and circulate the air. Limit switches are built because if the warmed air is too cool then you will never get hot air through the ducts.
Major indications main limit switch should need replacing
- The system is beginning to act weird more often than not
- Your Carrier system is unable to start or continue to run for any significant length if time
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