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Old gravity Heater kicks off to early

I'm a novice at this, but I check the system over pretty well. I can't seem to find anything wrong except its about 60 years old. Its a Lennox GS42-60S Gravity Heater. It burns natural gas, not oil.
I opened up the fan controller box. When I twist the dial counter clockwise the unit lights up properly. The off is set at 100 - the on at 150 - th elimit at 200
Any ideas?
Is my unit running way to hot or is my fan controll dial burnt
Fixya didn;t have the manufacturer as an option or heaters for that matter, I choose AC as I'm hoping the HVAC guys are answering

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  • Ken Bledsoe May 11, 2010

    So let me get this straight. you manually turn the fan control to engage the fan to start other wise it will not come on.. Right?

    And you was right in putting this problem in the a/c category



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I recommend that you begin by calling your supplier of natural gas. They offer a free service whereby they will come to your home and check out your heater. They will also show you exactly how it operates. good luck.

Posted on Feb 14, 2009

  • Joe Hogan Feb 14, 2009

    I recommend that you begin by calling your supplier of natural gas. They offer a free service whereby they will come to your home and check out your heater. They will also show you exactly how it operates. good luck.



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