To get email notification when someone adds to a thread you're following, click on the star in the thread's header and it will turn yellow; click again to turn it off. To edit your profile, click on the gear.
The Wall has a powerful search engine that will go all the way back to 2002. Use "quotation marks" around multiple-word searches. RIGHT-CLICK on the results and choose Open Link In New Window so you'll be able to get back to your results. Happy searching!
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Need to contact us? Visit

zone valve problems

The system in question has 3 erie zone valves 2 work normal the middle valve opens when the t-stat calls for heat and starts to open the motorized damper and starts the burner for maybe 2 seconds. Then the gas boiler shuts down but the zone valve stays open.I'm confused if the valve was bad why does it start the cycle everytime then shut down?


  • hot rodhot rod Member Posts: 5,836
    could be the end switch

    inside the valve is bad. The boiler will go off when it reaches temperature, of course.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • [Deleted User][Deleted User] Member Posts: 4
    zone valve issues

    Thanks Hotrod
  • EmpireEmpire Member Posts: 2,343
    End switch is probably bad.

    There is a micro switch on the valve and they do become corroded and sometimes will not even start the boiler at all.  Change out the power head.  Valve body can stay in place.


    Mike T.
  • [Deleted User][Deleted User] Member Posts: 4
    end switch

    Thanks Mike T.
This discussion has been closed.


It looks like you're new here. If you want to get involved, click one of these buttons!