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ecotec

  1. 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...
  2. 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
  3. 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...
  4. 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
  5. 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
  6. 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...
  7. 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...
  8. 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...
  9. 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
  10. D

    Ideal Logic 30 kW or Vaillant ecoTEC plus 430?

    Hi all I am getting my central heating system revamped as per of a house renovation project. 3 bedroom house with zonal heating system, including underfloor heating in new extension, with radiators elsewhere. I'll be putting a 30 kW, gas fired, heat only boiler in (without solar thermal), and...
  11. B

    Valiant ecotec pro base thermostat broken

    Hi pictures say it all really.. The knob to turn to adjust the temp of heating,(and hot water) just free wheels, and pulls off. Can I just stick a screw driver or something in and twist? Is there a way to work out what it's set at? Is there an easy perm fix? Thanks
  12. C

    F22 error on Vaillant Ecotec Plus Boiler

    Hi all, I have a Vaillant Ecotec Plus 418 boiler (standard boiler, not combi), but as of this morning my heating and hot water has stopped working, and I get the error message F22. I believe this means the pressure is low and I've looked online, and it suggest I must use valves under the...
  13. O

    Ecotec PLus 825 & UFH

    Hello Guys, I just recently installed a ecotec plus 825 which is working fine. The customer is complaining about their only heat source which is ufh rehau. The problem they experiencing is no heating. I have been out and investigated the works again. I have made sure the boiler is functioning...
  14. R

    Repressure a Valiant Ecotec pro 29

    Hi all have some issue with my boiler, a couple weeks ago someone bled my tower rail and I have now got a low pressure fault on my boiler? Was told to open 2 valves to repressure the system but no sure which two??
  15. hugh4g

    Boiler Response time Vaillant Ecotec Plus

    I wonder if anyone can offer a simple answer. I have a fairly newly installed EcotecPlus and a pressurised cylinder. After using some hot water for a bath, for instance, the boiler takes at least twenty minutes before waking up to replenish the hot water supply. Is there a way to make the...
  16. RoryD

    vaillant ecotec 831 S53 !!

    Boiler banging and crashing;Was able to easily stop the pump; found plenty of sludge residue in secondary Heat Exchanger. Fitted magnaclean, Magnacleansed system, replaced pump & 2ndary h/ exchanger. All fires well, heat circulates well. On DHW the water is luke warm 35ish degrees. Boiler...
  17. D

    Vaillant Ecotec 630 wiring to Nest 3rd Gen

    Hi, I hope someone can answer the question or point me to an appropriate thread please. Currently the system is wired as per the S Plan from Nest and is fully operational for both Hot Water and the Central Heating, however the issue is that the boiler switches off when HW and CH demands have...
    • Deleted member 99491
    • Thread
    • ecotec vaillant wiring
    • Replies: 10
    • Forum: UK Plumbers Forums
  18. Inverness

    Valiant ecotec plus 831 high/low fire settings

    hi guys, came across my first valiant combi. I couldn't figure out how to get high fire and low fire to check my ratios and co2. There wasn't a manual. Any advice? I'm used to Worcester boilers.
  19. P

    Screeching Grundfos ERP 2015 pump in Vaillant Ecotec Pro 24

    Friend has a Vaillant Ecotec Pro 24 VUW 246/5-3 R4 boiler that was installed just over 2 years ago (now out of warranty as not installed by Advance engineer). The pump makes a screeching noise when the hot water is running or when the pump is operating at a high rate for CH. Before I go and...
  20. Deleted member 32524

    Vaillant EcoTec 831 intermittant noise

    Hello, Thanks for looking. Got called to above to a report of it making a noise, intermittently, no fault codes. Checked CO2 levels and it was at 8.5%, put it to 9.0% as per MI. Thought that would cure it, but no. Had a call today to say its back. I have not heard a peep? Runs smoothly when I...

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