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Lennox XC21 Limit Switch
The limit switch has a sensor located in the furnace that can determine when the air is warmed to a point so that it may be pushed through the ducts and out the vents. The main reason limit switches are made is because if the air never warms up the you will lose heat in the ducts and the vents will just blow cool air.
What are some hints that my chief limit switch is almost dead?
- The heating and AC system will not begin or run even though max temp has not been reached
- The Lennox system is beginning to stop suddenly on a regular basis
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If you are going to be buying or purchasing a new Lennox XC21 replacement part do your best and make sure of the correct model and also make a visual comparison in order to be sure the proper replacement limit switch is the one being purchased. You do not have to replace the part all by yourself. Hire a pro in your community to pay to install it for you.
Feel free to download your manual for help.
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