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E20 purge running constantly

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hyper1also
hyper1also Member Posts: 2
I awoke to boiler purge running constantly. Only way to stop it was turning power off. I noticed pilot light was off and tried to get pilot lit while power off . No good. Changed out thermocoupler hoping to get lucky. No good. What have I got going on and what do I need to do. I have had a 14 year run on this burner. Thanks

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  • Steamhead
    Steamhead Member Posts: 17,008
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    @hyper1also , first thing I'd check is the thermostat circuit. A short in this circuit will make the burner run continuously. Disconnect one of the thermostat wires- if the burner stops, that's your problem.

    What boiler is this E20 installed in?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Tim McElwain
    Tim McElwain Member Posts: 4,629
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    The relay contacts on the burner tray may be stuck. Contact R.L. Gourley, 80 Felton St. Waltham. Ma.
    781-894-9500 Do you have the manual for the burner if so the part number will be listed in the parts section. If you have further questions Call Tim McElwain 401-437-0557