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Lennox G40DF-48C-090 Limit Switch
The limit switch has a sensor in the air handler that can determine if and when the air is warmed to a point for the blower to be activated. One big reason why limit switches are designed that way is because if the warmed air is too cool then you will never get hot air through the ducts.
Simple signals limit switch is in need of replacing
- Your Lennox system is unable to start or run longer than 30 seconds
- The system begins to go through the startup sequence but stops quickly more than once
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Before you decide on buying or ordering a new Lennox G40DF-48C-090 replacement part, do your due diligence and make sure of the model number and also make a visual comparison in order to be sure the proper replacement limit switch is the one being purchased. There is no need to install the replacement part alone. Consult with a professional in your area to pay to install it for you.
Feel free to download your manual for help.
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