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Any Buderus GB techs out here, problem not clear in service manual

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tim smith
tim smith Member Posts: 2,886
in THE MAIN WALL
Looking for some info on a 9U error. Of course no tech support on weekend!

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  • Steve Minnich
    Steve Minnich Member Posts: 2,868
    Same thing you're reading?
    Steve Minnich
  • tim smith
    tim smith Member Posts: 2,886
    Stephen, thanks for reply, went through all ladder diagrams for check out. Still getting the dang code. New uba tried but no go. It may be in the pull out drawer but no good checkout procedure that I could find for that.

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