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Carrier 48HJD014 Limit Switch
The limit switch has a sensor in the heating area that can determine if and when the air is warmed to a point that it can be circulated throughout the house. This is important because if the warmed air is too cool then the house will never get warm enough.
Major symptoms of an ineffective limit switch
- The heating and AC system will not initiate or run even though max temp has not been reached
- The system starts to runs spotty occasionally
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