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Lennox G40UH-24A-045X Limit Switch
The limit switch is a type of sensor switch in the heating area that determines when the heated air is warmed to a point for the main blower to kick in and circulate the air. A limit switch was crafted because if the air never warms up the you will lose heat in the ducts and the vents will just blow cool air.
Some warnings of an ineffective main limit switch
- System will not start or run well even though the desired temperature has not been attained
- The system is starting to initiate and then stops repeatedly
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If you decide on picking up or ordering any Lennox G40UH-24A-045X replacement part, do your due diligence and cross-check the model number and also make a visual comparison in order to be sure the correct replacement limit switch is being ordered. The installing of a new limit switch is a piece of cake provided you possess the knowledge and have the proper tools to get it done.
Feel free to download your manual for help.
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