vaillant

Hi All, I was wondering if someone can explain to me how you wire up a Vaillant AroTherm Plus with a SensoNET 921 and sensoComfort 720F/2. I just purchased an accessory for the SensoNET 921 that is used instead of a mains plug adapter. (See image below) As referred to in the SensoNet manual...

Hi My TurboMax 828 is 23 yrs old and the diverter valve has been replaced three times in the last three years. So now thinking of replacing the boiler with another Vaillant. Would prefer to keep existing flue, if it is still in good condition. Would anyone know if the ecoTEC plus or ecoFIT...

I'd like some advice on what I should connect to my new boiler please I'm getting a Vaillant EcoTec Plus 940 installed and I don't think my plumber would mind me saying that he's a great plumber and corgi engineer but he hates all that smart boll-ox. I currently have a Nest connected to the...

Hi Everyone, I was wondering if anyone knows of a way to shorten a flexible stainless steel flex hose for a Vaillant ASHP? I have previously purchased flex connection hoses from Vaillant that could be shortened using a circlip, but it would appear that they have changed their manufacturing...

I have the 2023 release Vaillant Ecotec Plus 832 installed (touch screen display at front). It was installed with a Wolseley Centre wireless controller however the radiators were taking 50 minutes to 1 hour to come up to the target flow rate of 60 degrees and after much misdirection by Vaillant...

Hi there. We have a Vaillant system boiler which has recently had a new expansion vessel and PRV. However, we still have some kind of pressure issue. The pressure remains pretty constant with daily checks and similar usage patterns (typically 1.4 or 1.5 bar) for about 4 weeks, but then suddenly...

Hi Everyone, Does anyone know if there is a difference between the Vaillant AroTherm Plus 7k sold in the U.K. vs the EU model? I can see that there’s a huge price difference with items such as the VRC 720 F wireless controller and that generally speaking the AroTherm Plus is sold separately to...

Hi All, I am considering installing a Vaillant Arotherm Plus 7kw heatpump in my house. Does anyone know if the Arotherm Plus 7Kw includes a controller unit (wiring center)? I previously lived in Denmark and Vaillant supplied a seperate VWZ AI Controller and this could be paired with a Vaillant...

I recently had a new 2023 Vaillant ecoTec plus 630 (30kW) system boiler installed along with a Low Loss Header (LLH) in my house. I have 21 rads in the house and a room with UFH. The LLH was introduced as I was finding (before the LLH was fitted) that my old boiler (Vaillant heat-only boiler)...

Hi all I noticed water dripping from the bottom of my Vaillant combi boiler and found the source to be the base of the flue where it connects to the boiler (as in the photo below). I've sent pictures to the boiler installer but he's ghosting me. Is this something I can fix? Tighten up the...

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I have have a Vailant EcoTec Plus 937 boiler that is about 10 years old. During it's first few years, I had the VRC700f control with the wireless outdoor temperature sensor, that modulates the flow temperature based on the outside temperature. Unfortunately the outside weather temperature...

I’ve just had a full central heating setup installed into my ‘older’ property. Mostly, everything feels fine (and warm). The one adverse symptom is that one (high capacity) radiator in the living room occasionally but regularly ‘tinkles’. I’ve repeatedly bled the system but this doesn’t alter...

Evening all, I'm looking to have my 50 year old conventional boiler replaced with a combi, and may have a HWC added in a new location at a much later date. The current boiler is a Potterton Netaheat Electric 16/22. The teeth on the knob on the front have gone so the actual setting is somewhere...

So a couple of weeks ago we noticed the boiler making this noise (see vid), its much louder than we've known it to be, and there seems to be condensation or steam coming out of the hole in the top. Strange thing is that it only makes this noise if we run the bath, the sink taps or heating do...

Hi All Vaillant ecotech system installation (+ tank for Domestic Hot Water), single zone. Current thermostat is a wireless salus, with a drayton programmer. Myvaillant connect will be installed to program heating times via phone app, directly on ebus connection so no wiring headache for this...

Hi, I had a Vaillant ecofit pure 830 combi installed at the beginning of the year. Flushed and new protection kit fitted, etc. Came back from a 2 week holiday and now I'm getting a horrible loud pulsing noise that vibrates through the house. Happens with both ch and hw. Have attached a short vid...

I’ve just wired up a hive thermostat to my Vaillant ecotec plus 824 boiler. The hub, thermostat and receiver are all paired. The receiver clicks on when turning thermostat up or using via app on iPhone but the heating itself isn’t turning on. It’s like it’s not getting the signal from the...

Hello Folks and Especially those that are averse to Vaillant prooblems I have an Ecotec plus 637 systems boiler not sure if its S or Y plan but will poost pictures. Theres a wireless room stat in same room and a Valliant control center too. All has been running fine for absolutely ages until...

Had a short power cut earlier and when the power came back on, it looks like my Vaillant Ecotec 937 plus boiler died. My educated guess is either when the power went out or when the power came back on, the PCB on my boiler died, as now it is completely unresponsive (LCD dead, no heating or hot...