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.
If our community has helped you, please consider making a contribution to support this website. Thanks!

L8148A Doesn't Break When Setpoint Is Reached

Options
Alan (California Radiant) Forbes
Alan (California Radiant) Forbes Member Posts: 4,677
edited 9:09PM in THE MAIN WALL

Brand new aquastat relay. Setpoint is 150F and water temperature continues to climb past 200F.

I've seen these stuck open, not closed.

0-11.jpg
8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

Two btu per sq ft for degree difference for a slab

Comments

  • HydronicMike
    HydronicMike Member Posts: 317

    Did you try checking the bulb? Better yet, why a mechanical aquastat?

  • Larry Weingarten
    Larry Weingarten Member Posts: 4,061

    Hi, Are there contactor points you can get to? Any chance they got fused together? I still have a point file in my tools somewhere if you need it 🤠

    Yours, Larry

Categories