Yorkstar 20 locking out intermittently

Discussion in 'Plumbing and Central Heating' started by ratrsed, 10 Oct 2016.

  1. ratrsed

    ratrsed

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    Hello

    I have a Yorkstar 20 boiler that has been functioning well for many years. Recently it has started locking out intermittently. Sometimes it will run for half a day after resetting. Other times only for a few minutes.

    Any ideas what to try testing/replacing first?

    Thanks.
     
  2. oilhead

    oilhead

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    Full service to include a full clean out, oil filters cleaned including the fuel pump. New nozzle, check and reset oil pressure, check and set up with a flue gas analyser.
     
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  4. ratrsed

    ratrsed

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    It's recently had a full service and our local oil boiler man has checked all the obvious things. He's now at a loss as to what is happening. I was wondering if anyone had any experience with these boilers and knew of any common faults that would cause these symptoms. I read somewhere else on here about the ignition electrodes being unreliable. Is this a likely cause?

    Thanks.
     
  5. oilhead

    oilhead

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    Which burner do you have?
    Has he checked the flue integrity for contamination of combustion air?
    If electrodes are clean and not cracked then I doubt they would give a problem. The motor capacitor could be a problem in intermittent lock outs.
     
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