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Lennox CB30U-31 Limit Switch
A normal limit switch has a sensor in the heating area that senses, or governs, when the heated air is actually warm enough for the air to begin normal home circulation. Limit switches were created because if the air never warms up the you will lose heat in the ducts and the vents will just blow cool air.
Important hints critical limit switch is on its last leg
- The Lennox system begins to behave erratically time after time
- The heating and AC system will not initiate or continue to run for any length of time
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If you are going to be buying or ordering a replacement limit switch for your Lennox CB30U-31, do your due diligence and double check the correct model and also make a visual comparison in order to be sure the right limit switch is the one being purchased. There is no rule that says you have to install the part by yourself. Pay a professional locally to hire and install the part for you.
Feel free to download your manual for help.
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