Posting a message to the forum will remove the above advertisement
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. Checkout our Plumbers Insurance area - heavily discounted Public Liability Insurance and Van Insurance specifically designed for plumbers.

Discuss Vaillant 937 Ecotec Plus problem in the New Member Introductions area at UKPlumbersForums.co.uk.

Thread Status:
Not open for further replies.
  1. Alansmithers

    Alansmithers New Member

    Hi all,

    Hoping someone can help...
    We have a 937plus about 8 years old.
    Some weeks ago we noticed radiators were hot but no hot water when demanded. Quick fix was to switch boiler off the back on.
    Our regular heating guy has diagnosed faulty diverter valve which seems logical to my very uneducated mind!
    However, today we've had radiators on permanently even though: thermostat is set way below ambient temp, controller is in the OFF setting and the storage tanks have been turned off (temp dial on boiler all the way to left so the 'C' symbol is off - we did that a few weeks back so as to prevent any demand for storage tank heating). The diverter valve is due to be replaced in a couple of weeks.
    Can anyone tell me what could cause the boiler to fire when there is no demand from hot water, room thermostat or pre- charge tanks?
    I'm now worried it might be more than a duff valve!
    Thanks in advance :)
    Alan


    Hmmm... Seems that someone had turned the pre-charge back on so hopefully that's mystery solved and a new diverter will sort it!
     
    Last edited: May 26, 2019
  2. Riley

    Riley S. Mod Trusted Plumber GSR Top Contributor!!

    Alan although you decided to claim that I was scared to tell you last time, I will say it again for avoidance of doubt. We will NOT give information relating to the repair of boilers. You may claim that you aren’t carrying out the work but a. How do we know that? and b. You may not but the next person might. Your thread was closed last time for this reason. As is this one. Please just trust your engineer to sort it
     
    • Winner Winner x 2
Loading...
Similar Threads - Vaillant Ecotec Plus Forum Date
Vaillant EcoTec Plus boiler whines until hot water is turned on and then stops Central Heating Forum Tuesday at 1:56 PM
Vaillant Ecotec plus Plumbing Forum May 19, 2019
Thread Status:
Not open for further replies.