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Lennox G40UH Limit Switch
The limit switch is a type of sensor switch in the heating area that makes the determination if and when the air is warmed to a point for the air to begin normal home circulation. The reason limit switches exist is due to the fact that if the air inside the furnace is too cool then the house will never get warm enough.
General indicators that your critical limit switch is going out
- Your Lennox system will not start or continue to run like it is supposed to
- The Lennox system begins to runs spotty occasionally
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Before buying or ordering, do your due diligence and double check the correct model and also make a visual inspection in order to be sure the proper replacement limit switch is being ordered. Take safety precautions when replacing parts in an HVAC environment. If you are unsure about the installation then you should call a pro. Stay safe.
Feel free to download your manual for help.
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