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80%furnace only two burners lighting

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chrisf462
chrisf462 Member Posts: 1
in Gas Heating
Ran into an Air Temp gas furnace, 80%, about five years old. Sequence of operation is normal until the burners ignite. Only two of the five ignite, the other three just spill gas (customer called gas cumpany and they shut it down). Didn’t have a manometer but guessing gas pressure inlet or outlet might be issue? Or what else??

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  • ratio
    ratio Member Posts: 3,627
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    Spiders/cobwebs on the little slots that pass the flame from burner to burner. Misalignment of the burners can have the same effect.
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,540
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    What @ratio said

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