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Lennox G40DF Limit Switch
The main reason limit switches are made is because if the warmed air is too cool then you will never get hot air through the ducts. The limit switch contains a sensor located in the furnace that senses, or governs, when the air is actually warm enough for the air to begin normal home circulation.
What are the indications that my limit switch is not working properly?
- The HVAC system refuses to kick in or run well for any significant length if time
- Your system is beginning to become unpredictable from time to time
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If you are going to be buying or purchasing a new Lennox G40DF replacement part do your best and make sure of the correct model and also make a visual inspection in order to be sure the proper replacement limit switch is being ordered. You do not have to install it yourself. Consult with a professional in your town or city to hire and install the part for you.
Feel free to download your manual for help.
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