ecotec | Page 7

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ecotec

Recent contents Top users
  1. 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...
  2. 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...
  3. 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
  4. 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...
  5. 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
  6. 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...
  7. 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...
  8. 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??
  9. 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...
    • hugh4g
    • Thread
    • boiler ecotec plus vaillant
    • Replies: 5
    • Forum: Boilers
  10. 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...
  11. 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...
  12. 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.
  13. 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...
  14. 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...
  15. Y

    Vaillant ecoTEC plus 837 R1 with persisting F75 fault

    Can someone help diagnose Vaillant ecoTEC plus 837 with persisting F75 fault please? We already replaced the pressure sensor, installed F75 kit, replaced the main heat exchanger, and the pump, and the PCB, and flushed the system and installed a filter on the return, but still sometimes we get...
  16. L

    Vaillant Ecotec F32 Fan Fault

    I have Vaillant ecotec 838 with F32 fault. I have had the fan and PCB changed but still get the fault. When the fault comes up the fan is still running!! Any ideas?
  17. W

    Vaillant Ecotec Pro 28 pressuring dropping - due to Magnaclean?

    In January 2018 we had a new diverter valve fitted to our Vaillant Ecotec Pro 28 by an official Vaillant repairman. After this we had a Magnaclean 2 fitted by our gas installer. I had checked the water pressure on the Vaillant and it appeared to be OK, around 1.1 after the installer fitted the...
  18. M

    Vaillant EcoTec 831 - no heating but hot water

    Hi I have an issue with our central heating. The hot water works fine but we have no heat coming from the radiators and yet strangely we do from the towel rails. Any ideas? So far I've tried reducing the boiler pressure by bleeding the radiator as it had gone into the red zone. It is now in...
  19. Bettyboo

    Help with repressurising Ecotec plus please

    Hi Please can you help? I have a Vaillant Ectotec plus.(4 years old) and a megaflo. For some reason it has just stopped working . The screen is flashing F22 and stating the pressure is O bar. So I have tried to repressurise it between 1 and 2 bar but I can only get it go up to 0.3. I opened up...
  20. Hobo128

    Vaillant ecotec pro 28 f28

    Been out to this boiler tonight. Open hot or ch demand boiler fires up for about 2 - 3 seconds and then goes off, repeats its self about 4 more times the locks out with f28. Ive checked the gas valve for resistance. Checked continuity of gas valve leads. Check earth to boiler. Took out spark...
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