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vaillant

  1. M

    Vaillant ecotec 24 not responding

    Vaillant ecotec went off this evening, just noticed, no response, not turning on and no error code. tried replacing fuse in plug, turns on for less than a minute then dead again. have repeated with new fuse and does the same. Any ideas?? Plumber says maybe pcb, he can check in the morning...
  2. S

    Vaillant Ecotec 832 pressure rise with CH on

    Hi Guys, Needed bit of help on a Vaillant Ecotec 832 which has a pressure issue. The boiler pressure is rising when the CH was running. I have checked the expansion vessle static and charge is showing 1bar on my pump, which I believe means the vessle is good or best to still recharge again...
  3. J

    Recommendations for Vaillant combi heating controls...

    Hi all, I could do with recommendations for heating controls. The customer is a small church/church hall - with a fairly new 30kw Vaillant Ecotec Pure. No heating controls (other than the inbuilt time clock) were fitted by the original installer. They've got two heating zones (currently...
  4. I

    Vaillant EcoTec 831 - How to configure for economy

    Apologies at start for long post but trying to give as much info as possible, Home - detached bungalow build 1989, cavity wall insulation, loft had extra in 2008, doubled glazed, 2 bedroom, 1 bathroom. Size is Width 35 feet, length 32 feet, room height 8ft. 7 Radiators installed 1995 plus 1...
  5. N

    Vaillant F23 fault Christchurch, Dorset

    My boiler has tripped out showing F23, British Gas came out two weeks ago cleaned out the pump and it worked but now has tripped out again. I need someone who can give the system a power flush. It is an open system with a hot water tank. Many Thanks in Christchurch BH23 4ER
  6. L

    Vaillant boiler - what do the buttons do, controlling the boiler, and opentherm

    Hi, I've got a "Vaillant ecotec pro 28 VUW GB 286/3-3", I think it's around 10+ years old or so. I don't have a user manual, and I can't find one for this model online on any of the "manual websites" on the internet. The control panel looks like this - see the attached picture. What do those...
  7. 5

    VAILLANT ECO TEC PLUS 835

    Installed the above boiler today. They quote 14 ltrs per min hot water. Looking at the heat exchanger, it does not look any different in size to the 832 (well I know, its only 3kw more!), but comparing this to the 838, that heat exchanger is nearly double the size? and the flow rate on that is...
  8. S

    Viessmann/Worcester/vaillant

    I have done a extensive research and watched hours of videos about all of them and looking for the most suitable boiler for our house. The house is 5 bed, 4 bathrooms, 20 radiators and maybe in future underfloor heating, 5 people living here and very rarely we use more than one bathroom. Flow...
  9. D

    Vaillant TRV to Wiser TRV Adapter

    Hi Just purchased a Wiser 2 starter kit and all is good for those newer/replacement radiators that have Drayton 4 TRV's, but most of the house has the original Vaillant TRVs and the adapters supplied don't allow for this conversion. Does anyone know where I can purchase some adapters please...
  10. R

    Vaillant Eco Tec Purge

    Hi. Our Vaillant Eco Tec Pro 28 (13 Years Old) stopped working two days ago. The boiler was trying to fire up but the start up sequence never got all the way through so no heating or hot water. No error code but an S.97 code when I hit the 'I' button. After an engineer fitted a new pressure...
  11. R

    Vaillant ecoTec Plus 831 Filling Loop End Caps

    Good morning all Vaillant ecoTec Plus 831 Filling Loop Can anyone recommend a pair of suitable end caps for the above? An Amazon or eBay link would be good. Thanks
  12. J

    vaillant ecotec pro 28 buzzing noise issue

    Hi, it sounds like a bee, happens intermittently with rads on only, goes off when you open hw tap Video - https://drive.google.com/file/d/1eGBfQHfTCeM7s8z51rV2yhXCyRC2AppK/view?usp=sharing Thanks
  13. E

    Vaillant eloblock board

    Hello, I need a clear picture of the electronic board of Vaillant eloBlock, so that I can read the electronic components of the board, the board to be photographed up close in order to read the electronic components, thank you for your help
  14. C

    Vaillant EcoTec Pro comes on randomly

    Hello, I hope one of you good people can help. We have a Vaillant ecoTec Pro boiler, it's about six years old. Today, for the first time, it's started acting up. By that I mean it's heating the radiators even though the portable thermostat thing that sits down here shows that the temperature...
  15. T

    Vaillant EcoTec Pro 30 - Loud clicking noises every few mins after heating starts

    Our Vaillant EcoTec Pro 30 makes a loud clicking noise every few mins after the heating comes on. Eventually, after about 10-15mins it stops, but the weird thing is it also happens the same (clicks every 2-3 mins for 15 mins) after the heating is switched off. Here is an edited clip of the clip...
  16. G

    Connect HeatMiser UH8 to Vaillant system boiler.

    Hello everyone, Could do with some advice please This is my current setup: Vaillant ecotec plus 637 system boiler Unistor unvented cylinder Vr66 wiring centre Vrc 470f S plan system Now I have just had underfloor heating installed and a HeatMiser UH8 wiring centre, a new motorised valve...
  17. D

    Vaillant ThermoCompact F22

    Hello dear people of plumbersforum, I am coming to you in a dire situation as winter is setting in in Scotland and my Boiler just decided to be annoying. About 2 days ago, I woke up freezing, with my radiators ice cold even though my boiler was still perfectly fine the night before. The...
  18. E

    Vaillant EcoTec Pro not reaching set temperature

    Hello! We have 3 years old Vaillant boiler and recently we noticed that it's not reaching set temperature. I set the temp to 50 deg C, and then when we open the water, it starts burning and burns about 4-5 sec. then it stops. around 46 deg C. Water cools down a bit, then it starts burning again...
  19. B

    Vaillant EcoTec 630 - will only partially fire and won't heads the rads

    Morning all, I'm new and shiny here and seem to have developed a heating problem this morning. Any pointers for a quick resolution would be appreciated as my ears are now hurting! :rolleyes: I have a Vaillant Ecotec Plus 630 driving rads, hot water and underfloor heating in some of the house...
  20. Audronius

    New Home Struggle - Vaillant Ecotec + Drayton Digistat

    Hello, Recently moved into a new rental place, struggling with the heating equipment. I'm not a plumber or heating expert, did the troubleshoot I could think of with no success so seeking help from more knowledgeable people here. Equipment: Vaillant EcoTec Pro 24 boiler plus Drayton Digistat+...

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