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Carrier 50JZ Limit Switch
Limit switches exist because if the warmed air is too cool the you will lose all the heat as the air flows through the ducts. The limit switch has a sensor in the heating area that senses, or governs, when the air is warm enough for the blower to be activated.
Symptoms critical limit switch should need replacing
- The HVAC system starts to act weird more than once
- System will not begin or continue to run longer than 30 seconds
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