Carrier furnace problem

Old 10-02-11, 09:37 AM
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Carrier furnace problem

I have an older Carrier furnace that seems to backfire a bit when it starts up (flames come out toward gas valve). Everything seems to work okay except when the furnace starts up. It seems as though maybe the gas valve may be sticking but I can't see how that much gas can accumulate to make it so this. I tried to adjust the regulator to decrease the gas flow but this did not seem to help. Any advance is appreciated. Thanks.
Old 10-02-11, 09:58 AM
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call a professional you are messing with gas.... It needs to fine tuned by a Pro with a combustion analyzer.
Old 10-02-11, 03:21 PM
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If there is a delay when the gas turns on before the burners light, it's probably delayed ignition. The usual cause of that are burners that need to be taken out and cleaned, especially the carryover ports that light neighboring burners.

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