vaillant

I've got one of these boilers - it's about 20 years old. It's got a time switch thingy on the front panel which ticks quite loudly - a bit annoying because it sits in the corner of my lounge (albeit behind a small door). I don't use the time switch - I've got a separate programmable thermostat...

I am hoping someone here can help - have looked through this very helpful forum and couldn't find a similar issue discussed. I have a Vaillant Turbomax plus 828E which works intermittently for both hot water and heating - it comes on sometimes and at other times it doesn't. From what I can tell...

Hi… I have an old Vaillant Ecomax 824/2e that is making some very hot water! The water temp gauge is set to 50 degrees Celsius (on the lcd display on the boiler - the dial is about half way between coldest and hottest). However, when I turn on the top tap fully, the reading on the same gauge...

Hi my boiler lost pressure due to a leaking radiator. Does anyone know how I can repressurise please ? I don't have the manual from when I moved in. I have identified the loop but there is only 1 valve that I can turn. Any guidance would be appreciated it. Complete novice here !

I have a Vaillant ECO Plus, remote hot water cylinder, wired Honeywell S Plan with a Lifestyle LP722. This time of year I have CH set to OFF and HW set to twice per day. For the past day or two, the HW signal calling for heat doesn’t light the boiler. E.g., the boiler water was 19 C this...

Replacement ecoTech boiler & flue Oct 2020. During strong wind, flue terminal admits rain water, which runs into boiler. Rain also seen leaking from flue joints. Have confirmed water ingress is via Air Intake, using garden sprinkler. Accredited, established installer has checked and re-checked...

Hi, We need to presurise our Vaillant Ecotec 24, but for some reason there doesn't seem to be a handle on the valve? Any tips on how we can presurise? I've posted a picture for reference.

Hi. I'm looking for a PCB for my Vaillant Ecotec Plus 424, GC 41 044 74. I don't want to get it wrong! Vaillant Part No: 0020237689 is listed as correct but suppliers are saying, NOW USE 0020273087. But this new one does not seem to list my boiler on supplier websites. Can anyone advise me...

I’ll try to keep this as short as possible! Basically the timer has died on my Ecotec plus 831 combi and rather than just replace it with similar I was thinking now maybe the time to go smart and get something that can help my heating system run more economically as we’re off grid so run off...

My Vaillant ecoTEC plus 618 display is always illuminated - previously it would go dark until I turned one of the temperature setting knobs. Not only that but now the temperature shown is flickering irregularly around the preset temperature (70°) and also flashing back to the outgoing...

We continue to have problems with our Vaillant boiler which was installed last July; the company who installed it have still not managed to get our heating controls working. We had months with uncontrollable heating, and for the last few weeks have not been able to turn it off at all! Yesterday...

Considering a refurbished pcb from a company named Adlink (wembley) - £40 12 month warranty. What are fellow members views & experiences on using refurbished pcb's? Looking to open the topic up & explore it in discussion - to learn something new. I'm hoping to educate myself. It will be a bg...

I have mounted a VR66 wiring centre in dual zone (switch in position 0) with two VRT350 thermostats. The heater is an Vaillant Ecotec Plus with combiboiler from october 2020. And I must say it works very well when one or both thermostats ask for heat. When there is no demand for heat the boiler...

Just had my boiler serviced, two hours after the engineer left, the boiler suddenly started making a very very loud humming/buzzing noise. The vibration went through the house and through me. It sounded like a truck was about to come in the patio doors. The experience lasted 2 minutes and then...

Hi all, I have read through as many similar posts as I can in regards to my dilemma, I couldn't see anything that was similar to mine. I have a Vaillant ecotec plus 837 with a Honeywell BDR91 and CM927. The vaillant is connected by a UK mains plug as opposed to it being hardwired with a 3amp...

We're looking at replacing our ageing combi boiler and are weighing up whether it's worth getting a storage combi versus a conventional combi. (We've considered a system boiler and cylinder, but we don't think we can make it work from a space perspective; in any event, a combi should be...

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

New Vaillant Ecotec pro 30 boiler installed in August, worked OK for two months then the pressure suddenly dropped. Tried to raise it but it shot right up and made a very loud constant noise that we could only stop by turning water completely off. So no heating or water at all for a few days...

Hi I have a Vaillant vcw 242 eh, the hot water is working well on it and is getting up to a good temperature to flow rate. The problem i am having is with the central heating. When the thermostat is clicked on it fires up, but if you click it down and then click it back on again the boiler...

i have a SALUS RT500RF hand held controller and a VAILLANT combi-boiler. i recently had to change the batteries in the hand held unit and since then it doesn't actually control the boiler. both red and green lights are on on the receiver unit but even if the flame is showing on the controller...