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Lennox G20 Limit Switch
A normal limit switch contains a sensor located in the furnace that can determine if and when the air is warmed to a point to activate the main blower. Limit switches were created due to the fact that if the air never warms up inside the exchanger then the house will never get warm enough.
Main clues limit switch is dead
- Your Lennox system refuses to kick in or run as it should
- The whole system begins to erratically frequently
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If you are going to be buying or purchasing, do your due diligence and make sure of the model number and also make a visual inspection so that you are positive that the proper replacement limit switch is being ordered. Replacing a new limit switch is not difficult provided you energy and have the proper tools to get it done.
Feel free to download your manual for help.
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