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Vaillant eco tec plus 831

Discussion in 'Central Heating Forum' started by Chris w, Dec 2, 2018.

Discuss Vaillant eco tec plus 831 in the Central Heating Forum area at UKPlumbersForums.co.uk.

Top Posters
  1. Chris w

    Chris w New Member

    hi any ideas would be greatly received

    leave stat set on timer - when boiler comes on rads only Luke warm - turn off power to boiler then turn back on again rads get hot - showering and washing up makes no difference rads stay hot.

    When timer comes back on same thing -when boiler comes on rads only Luke warm - turn off power to boiler then turn back on again rads get hot - showering and washing up makes no difference rads stay hot.

    Also left boiler turned off for 4 hours with no power yesterday - no difference.
     
    Chris w, Dec 2, 2018
    #1
  3. sammathias

    sammathias Plumber GSR

    What timer do you have? Built in?
     
    sammathias, Dec 2, 2018
    #2
  4. Chris w

    Chris w New Member

    Hi it’s Wired timer (new fitted just in case wireless one was causing issue) which it wasn’t.
     
    Chris w, Dec 2, 2018
    #3
  5. Chris w

    Chris w New Member

    883F83A5-6AB6-4333-B3E5-B49D1F13AAB6.jpeg
     
    Chris w, Dec 2, 2018
    #4
  7. Chris w

    Chris w New Member

    Hi also fitter fitted heating thermistor sensor assemblies at the same time but made no difference.
     
    Chris w, Dec 2, 2018
    #5
  8. chris watkins

    chris watkins Plumber

    If rads (heating) are still on when you are running the hot water then it is diverter letting by.

    Heating engineer required.
    What area are you in?
     
    chris watkins, Dec 2, 2018
    #6
  9. Chris w

    Chris w New Member

    Hi thank you CT5 Kent
     
    Chris w, Dec 2, 2018
    #7
  10. chris watkins

    chris watkins Plumber

    Whitstable is too far for us am afraid.
     
    chris watkins, Dec 2, 2018
    #8
  11. Chris w

    Chris w New Member

    No problem - have you a rough idea of what it should cost please
     
    Chris w, Dec 2, 2018
    #9
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