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Explosion sound Carlin 99FRD, Suntec a2va-7116

Ed. W.Ed. W. Posts: 17Member
Client hearing explosion sound, intermittent at start up. My guess oil is dripping in fire box after shut down. My diagnoses, put in a oil shut off solenoid. Any Ideas?


  • STEVEusaPASTEVEusaPA Posts: 2,912Member
    edited April 7
    Probably not it at all.
    Why guess and sell the customer a part (wrong part), when you can go over there and properly test the proper components with the proper skills and tools like a professional?
  • SteamheadSteamhead Posts: 12,982Member
    First thing I'd look for is delayed ignition. But for the record, IMHO every burner should have at least a delay-on oil valve.
    All Steamed Up, Inc.
    "Reducing our country's energy consumption, one system at a time"
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Baltimore, MD (USA) and consulting anywhere.
  • STEVEusaPASTEVEusaPA Posts: 2,912Member
    Oh I agree with pre/post purge.
    What if the unit hadn't been cleaned in years, or there's a turd ball on the end of the nozzle, bad pump cut-off, loose wire, bad know, the list goes on and on.
  • EBEBRATT-EdEBEBRATT-Ed Posts: 5,795Member
    lack of oil flow, plugged filter, nozzle etc
  • Ed. W.Ed. W. Posts: 17Member
    Filter changed, Nozzle changed, Boiler cleaned.
  • JellisJellis Posts: 116Member
    draft checked? combustion analysis done? There is a reason for loud start, a oil delay valve is only a band aid, it may make the loud start go away but is not "the problem". did you test the fuel pump? whats the pump pressure and cutout?
  • HVACNUTHVACNUT Posts: 2,175Member
    You say "your client", but are you his/her heating contractor? I only ask because you needed 2 sentences for a guess and a diagnosis. A real pro could've done it in one.
  • STEVEusaPASTEVEusaPA Posts: 2,912Member
    I can’t tell if his last post means that’s what he did initially, or that’s what he did and the problem is solved.
    But I do have all I need to know by his first post.
  • HotanCoolHotanCool Posts: 48Member
    They all can't be Beckett AFGs. Need to learn them all!
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