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ecotec

  1. B

    Vaillant ecotec pro high fire

    For gas ratings does anyone know why when I put some ecotec pro's into high fire (p1) the temp goes sky high and shuts off? Had it in a newer one other day so it's not rubber hoses Method I turn the time switch to on, room stat up, select p1 and open hot tap. My thinking is: Blocked plate...
    • Burger
    • Thread
    • ecotec fire high vaillant
    • Replies: 14
    • Forum: UK Plumbers Forums
  2. Christopher buzzard

    Vaillant ecotec plus 624

    Hi all. Got called to the above boiler with fault code F61. Checked wiring harness from gas valve and all was ok. Reset the boiler and it worked fine. Left it running for 20 mins coming switching it on and off, it worked every time. The only thing i did notice was the display was acting up...
  3. G

    Vaillant Ecotec 630 - Flow Temp

    Ok so am looking for a bit of guidance. Last year I had a Vaillant ECOTEC 630 Plus (System Boiler Version) installed to upgrade an old Keston something or other. According to the manual (and if I am reading it right) I should be able to set a target flow temp for the when the water Cylinder is...
  4. M

    Vaillant EcoTec Plus boiler whines until hot water is turned on and then stops

    So for a while, our boiler a Vaillant EcoTec Plus has made a whining noise, usually in the morning when it first comes on but can happen any time of the day (when on). The first time it happened I turned on a hot tap and it stopped. I have been doing this ever since, but actually, it is annoying...
  5. A

    Vaillant Ecotec 937+ problem

    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...
  6. A

    Vaillant 937 Ecotec Plus problem

    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...
  7. G

    Vaillant Ecotec plus

    Hello friends! I'm experiencing problems with my Vaillant heating system, I got an f22 error (low water pressure) and I cannot find the filling loop since there are no valves attached to it. I'll appreciate if you could help me out:)
  8. J

    Language Setting Problem - Vaillant Ecotec Plus 824

    Dear All Help! My boilers settings are in Polish and the manual online has a different settings box to mine (cf picture). I have tried google translating the options that come up but none of the words translate to 'language' in English. Help greatly appreciated. Best Joan
  9. apprentisorcier

    Erratic hot water on new Vaillant EcoTec Green IQ 843, can a TMV or S.40 state be the issue?

    I had a new Combi boiler (a Vaillant EcoTec exclusive green IQ 843) installed a few days ago replacing a previous system one. My flat has 2 bathrooms on two floors with 2 showers and 1 bath. Heating works, and hot water mostly works as well but there's something that kicks in when we shower...
  10. S

    Vaillant ecotec plus 637

    Afternoon all, against my will... I’ve been forced to install these for a builder at a customers house. All’s gone well, but how the hell do you get into the installer level? I can’t seem to find it in the manual Help
    • Sharp Point
    • Thread
    • ecotec plus vaillant
    • Replies: 5
    • Forum: UK Plumbers Forums
  11. P

    Random rumbling noise on new Vaillant Ecotec Plus 615 VU

    Hi all. I've recently been getting regular complaints from customers about their new ecotec plus 615 vus regarding an intermittent loud rumbling noise. Checked high and low co2 ratios, gas inlet pressure etc but never find a cause? I've had Vaillant go back to a few but they dont give me any...
  12. uniQ

    Vaillant Ecotec Pro 28 + WiFi Thermostat

    Hi, I purchased the following thermostat: BHT-002 because the heating timer on the front of the boiler stopped working: https://www.krieger-therm.ch/downloads/bht-002-with-wifi.pdf My boiler connections look like this: Do I connect the dry contact (1+2) from the thermostat to RT? Thanks
  13. V

    Vaillant Ecotec pro Low working gas pressure

    I would like some opinions on this situation. Vaillant Ecotec pro 28 Installed 2 years ago, Commissioned Gas pressure reading 16.5mb at max rate. 1st annual service passed.(2018) Just has second Service all combustion tests passed, and issued a Warning Advice notice of Immediately...
  14. P

    Cost for replacing condensate trap vaillant ecotec

    What would be the rough cost I would pay for a new condensate trap in a vaillant ecotec 28 boiler, the hose is split inside. Is it a big job to do? How many hours should it take. i have got someone coming to have a look at it. thanks
  15. A

    Vaillant ecotec 837 hot water problems

    Hi guys, currently at the above boiler with no hot water. Plate gets hot so preheat is working but when I open a hot tap nothing happens, no tap symbol or anything. The customer did say that when they was having some ground works done and the mains was accidentally cut and a fair bit of sand...
    • Aire
    • Thread
    • ecotec hot water vaillant water
    • Replies: 13
    • Forum: Bathroom Advice
  16. N

    Vaillant boiler issues F28 on ecotec 430 not the normal culprit

    Hi there, I’m hoping someone can help the last 9 months of intermittent issues we’re having. We live in a large house which is heated by 2 Vaillant ecotec plus 430 system boilers. They’re wired up together so will work at the same time. They are used to supply underfloor heating downstairs...
  17. Bettyboo

    Water luke warm - Megaflo and Valliant ecoTec Plus

    Hi Guys Please would you be able to give your thoughts on this... Last week had boiler serviced (its 4 years old) all ok afterwards until this morning, water was luke warm. Still luke warm after boiler has been on this evening. Temp reading 48 degree on boiler (target set at 68 degrees)Water...
  18. M

    Vaillant ecoTEC settings for use with vSmart and VR66 wiring centre?

    We have a new Vaillant ecoTEC 624 boiler (installed in November), operating as a system boiler. It wasn't getting on well with our Honeywell thermostat, so we decided to get the vSmart thermostat and VR66 wiring control centre, which should work better with it. One thing that seems to be...
  19. S

    Vaillant Ecotec Plus 430 - fan starts up briefly in middle of the night

    Hi, I wonder if anyone can help solve a mystery. I've a Vaillant Ecotec Plus 430 boiler (installed as an unvented system) that's about 3 years old and apparently working well. However, in recent months I've occasionally been woken by the boiler fan suddenly starting up in middle of the night...
  20. W

    Vaillant ecotec f61fault ,

    Any heads up on this fault f61 , it's on a 831 ecotec, got to go tomorrow ,so any advice , much appreciated

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