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My lennox heating system will not kick on when the temp drops and I have to manually set it every time....what to do?? Im freezing

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  • polarcub Dec 28, 2008

    Thanks skeeter140 for that info. However, I found out that I hadn't programmed correctly to set for the right temp throughout the day and night. Thank goodness that was the problem.

  • belltoo Jan 26, 2009

    we have battled the Lenox furnace for years. Several pro's have came out and tightened cleaned and one even changed the thermostat. It work ok for a week may be two and then it want come on. At first fault switching it on and off or running the thermostat setting below and above the extremes made it come on, after a while you get nothing. A few years ago I the same problem and I changed out the spark plug wire and it fixed it. Last year I have the pro come out and he was suppose to have done that same thing and hopefully avoid the hassle during the winter, don't remember last winter but this winter the same old junk. I guess Lenox pulse high efficient units do save me money??? But it a cold cost.



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Sounds like your t-stat is failing you. Here is a test you can do. Take the front cover off. Locate the R terminal and the W terminal. Get your self a short piece of wire small diameter say 18 gauge. Now take your wire and jump across the two terminals hold them there and if you hear your furnace kick on then the t-stat is bad. let me know what you find out. ken

Posted on Dec 28, 2008

  • Ken Bledsoe Dec 28, 2008

    Well at least it was the t-stat can you pull your rating as it down grades my overall ratings. You don't have to put any rating on me as you found the problem on your own. thanks ken

  • Ken Bledsoe Jun 01, 2009

    I guess you don't read your post much.



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