Carrier Furnace 58GS100-BA

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  • Posted by dhlavaty on Dec 21st, 2008 at 2:08pm

    Main Burner Gas Valve Shutsoff & Reopens Intermittently
    The furnace usually will fire up OK, but after a few mins. the Main Gas valve closes, then reopens after a few seconds, then will sporadically close & reopen, while the Pilot stays on and the fan continues to run the entire time. If it's not too cold out, the furnace will continue to run until it satisfies the thermostat setting. But when it gets colder at night, requiring the furnace to run longer than say 15 mins, the valve will open & close until it eventually shuts down and will not restart until I reset it with the On/Off switch. I don't have a manual and can't find any info on this particular model. It's about 20 years old. I suspect the problem is with the 3 wire safety switch module (?). Any help would be appreciated.

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  • Posted by josephws1959 on Apr 10th, 2010 at 3:06pm

    furnace burners will not stay on
    I have a Carrier furnace, Mod #58GS100-BA. When the thermostat calls for heat, the ignitor sparks, the pilot lights, and the burners come on like normal. But after the burners are on for a few seconds, they go out. After a few more seconds, the burners come on , then die out again. This on-again, off-again cycle continues for as long as there is a call for heat on the thermostat, with the pilot staying on the whole time. There's no wiring diagram, so any help anyone could offer would be appreciated.

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