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Riello Post-Purge Problem

Maine Ken
Maine Ken Member Posts: 531
in THE MAIN WALL
If by new you mean two days, then yes it was new. First time I have EVER had any problems with Riello burner parts.

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Comments

  • Rodney Summers
    Rodney Summers Member Posts: 748
    Riello Post-Purge Problem

    I have just installed a Buderus boiler with a Riello BF3 oil burner. It worked fine for a few weeks, but now the flame stays lit during post-purge, which effectivly cancels out post purge. Since I am direct venting, I get a nice blast of smoke and smell each time the burner shuts off.

    I checked all the wiring and it looks okay. I can hear the relay click, like it wants to kill the oil valve, but apparently oil keeps coming. The problem is somewhat intermittant, every once in a while the oil stops and the flame goes out. But mostly the flame stays lit, although it's not a strong as the normal flame, it flutters somewhat. Also, there is a whining noise when the burner wants to go into post purge.

    I suspect the problem is a stuck oil valve or a bad relay in the AL1009 module. But I am not an oil tech. Has anyone seen this problem before?
  • Empire_2
    Empire_2 Member Posts: 2,340
    Have you performed comb. tests?

    While it's nice to think that every gun is set up to run hastle free, combustion test's are critical. Do you have an oil cumb. test kit? Your problems may have started from day1....
  • Maine Ken
    Maine Ken Member Posts: 531


    Exact same problem last month. Solution was new AL1009 (the one with the resistor) and a new oil valve. It was sticking partially open during post purge. It coated the chamber with oil. Made for a mess in the dv application it was in. New board, new valve no more problem.

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  • Rodney Summers
    Rodney Summers Member Posts: 748


    Thanks for the info. Was it a newer unit? It's hard to believe that a 2-month old boiler/burner would have this problem. Although on the other hand I need to replace the mixing unit due to a crack in the three way valve housing. Maybe Buderus/Riello have quality control problems.
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