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Error code 55 on Noritz Combi

danitheplumber
danitheplumber Member Posts: 87
in THE MAIN WALL
Anyone ever seen an error code 55 on Noritz Combi boiler?

Comments

  • Amodedude1
    Amodedude1 Member Posts: 20
    Yes, that means the inlet pressure to the boiler "auto-feed" is low. Two scenarios, either you have a closed valve on the inlet to the boiler auto feed OR maybe you have a pressure reducing valve on the auto feed inlet. Also, maybe it's possible the auto-feed valve has failed. Also possible that you have a leak in your hydronic heating circuit so its never getting up to full pressure.
  • Putuju
    Putuju Member Posts: 1

    my noritz tankless water heater no hot water, leaking water under, and show error 55

  • Jamie Hall
    Jamie Hall Member Posts: 25,182
    https://forum.heatinghelp.com/discussion/comment/1802056#Comment_1802056

    Read the thread — it tells you what the error message means.

    However, in this case since you have water leaking under… you need to find the source of the leak. Your boiler might be done.

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England

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