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Lennox CB30U-21 Limit Switch
Limit switches are crucial because if the air is not warm enough then you will never get hot air through the ducts. A normal limit switch has a sensor in the heat exchanger that senses, or governs, when the air is warm enough for the blower to be activated.
Major indications limit switch should need replacing
- The system is beginning to behave erratically from time to time
- The heating and cooling system will not initiate or continue to run like it should
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Before you decide on buying or purchasing, do your due diligence and make sure of the correct model and also make a visual inspection in order to be sure the correct replacement limit switch is the one being purchased. Once you have the part to replace the part all by yourself. Hire a pro in your town or city to do the job for you.
Feel free to download your manual for help.
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