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Comfort Glow Vent-free Gas Heater CGN18B

I have a Comfort Glow Vent-free Gas Heater model number CGN18B. The pilot light will come on when i set the dial to "pilot". However when i turn it "high" the pilot light will go off. Any ideas?

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  • Anonymous Jan 11, 2009

    where in the sam hill can u buy the right one for these heaters, u only solve part of the problem,
    i have searched an searched, aside from buying a new heater, for which i 2 in my garage now that nee thermocouples

    cheeeeeeeeeeeeeeeeeeeeeeee

  • sarah ahearn
    sarah ahearn Jan 15, 2009

    The unit goes on the pilot light lights but when I turn it on it stay on weather it be on high or low it shuts down

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Check with Ebay seller s.a.w.inc for available thermocouples. If that doesn't solve the problem the valve unit will likely need replaced.

Posted on Feb 13, 2009

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The pilot light is operated off a millivolt generator. that is the small tube directly in the pilot flame. its purpose is to generate a small dc current which is connected to the pilot valve inside the main valve. setting the control to pilot opens just the pilot gas supply. when operating normally the millivolt generator keeps a small electromagnet pulled in that keeps the pilot gas supply open. if it don't work the pilot gas supply valve closes. replace the thermocouple.

Posted on Dec 07, 2007

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1 Answer

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Comfort Glow Vent-free Gas Heater


I have a comfort glow gas heater that the pilot lights and when I start the heater it works for about 30 seconds then the whole thing shuts down.

Jan 02, 2009 | Heating & Cooling

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