Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Triangle Tube Prestige - b 26 LWCO error - psi 2 - need help!

robhutson
robhutson Member Posts: 5
in Gas Heating

Would truly appreciate any help for a diy troubleshooting. It is 19 degrees out here in Massachusetts! Thanks, Rob

Resized_20250111_193147_1736641913946.jpeg

Comments

  • Ironman
    Ironman Member Posts: 7,622

    Is the shut off valve on the boiler fill line open? If it is and the pressure still doesn’t rise to at least 12 psi, then the fill valve may be bad or clogged.

    In that scenario, find a boiler drain near the boiler on the hydronic piping, connect a washing machine hose to that and the other end to a potable connection and slowly manually fill the boiler until you have 12-15 psi on the gauge. It should operate fine if there’s no major leak on the system, but the issue of the fill valve will need to be addressed soon.

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • robhutson
    robhutson Member Posts: 5

    thanks so much!

    Apologies for the dumb question but where is the shut off valve on the fill line located? 🙈

  • Ironman
    Ironman Member Posts: 7,622
    edited January 12

    I’m sorry, but I can’t see into your house from mine.

    If you post more comprehensive pics from further back, I may be able to locate it.

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • robhutson
    robhutson Member Posts: 5

    haha sorry!

    Maybe this helps?


    image.jpeg

  • robhutson
    robhutson Member Posts: 5
    image.jpeg

  • worldclasshvac
    worldclasshvac Member Posts: 31

    The fill line valve has a blue handle and is open in the first pic way to the right. Your water feed is bad but you may have a leak as well. Look into the bottom of the boiler inside and see if the copper pipe in the middle going to the bottom has a leak or corrosion there that's where the LWCO is located and they go bad I've replaced a few kind of common on these. For now fill it with a double ended hose from anywhere with portable water to 15psi

  • 109A_5
    109A_5 Member Posts: 1,940
    edited January 12

    Hello robhutson,

    Looks like a leak to me. You can put a cap on it to temporally seal it.

    image.png
    image.png

    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System
  • Ironman
    Ironman Member Posts: 7,622
    IMG_0849.jpeg

    This is the fill valve. If you raise the lever straight up, it should flow water to the boiler while it’s up, unless the valve is clogged. Close the lever once the boiler reaches 15 psi.

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • 109A_5
    109A_5 Member Posts: 1,940
    edited January 12

    The pressure regulator may be plugged up lifting up the handle briefly may help.

    image.png

    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System
  • robhutson
    robhutson Member Posts: 5

    Thank you so much everyone for your help! I believe I located a leak upstream at a garden hose spigot that was left on. It's off now, PSI is at 25, boiler is back, and the heat is on!

    Thank you all SO MUCH for your help! I LOVE HEATINGHELP.COM !!! 🙏

    Ironman
  • Ironman
    Ironman Member Posts: 7,622

    Is that 25 psi with the boiler hot or cold?

    If it’s 25 psi cold, you need to let some water out until you get back down to 12-15 psi.

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.

Categories