vaillant

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...

Hello Everyone, Has anyone had any experience with vaillant System boiler in s plan, sensocomfort vrc720f with ambisense TRVs as i was using an old WB combi boiler with Tado at my house but my builder said he wont be able to make tado work with the viesmann 100 in s plan so I am really looking...

Hi I have moved to a different home which has Vaillant Echo tech plus 418 boiler installed with open vented cylinder and a central heating system. The thermostat on the cylinder is set to 60C and the boiler has two radial dials in front to control the flow temperature, both of which are set to...

Hi, I have a Vaillant heating system at home (Ecotec Plus, VRC470f, VR61) and because I've been repletely facing issues with the VR21 wireless outside sensor (dies every 2 - 4 years) I installed a wired VRC DCF (9535) to replace the VR21 sensor. The new sensor is properly installed and detected...

Hi all, Preface; checked and can't find this exact issue on here, but similar to this one where someone suggested 'plate heat exchanger needs cleaned /replaced'. Unlike them, however, the boiler was looked at pretty recently. Setup: -Vaillant Ecofit Pure 825 -Radiators all bled and flow...

Vaillant VCW 282 A recent problem with this boiler is the flame not modulating to full both in CH and DHW modes, which is causing the radiators to warm up slowly and the DHW to not get hot enough. The hydraulic control system is seemingly working fine, the Differential Valve opens the Gas Valve...

I have same problem that has been posted on this youtube video: If the boiler has the heating running and you turn on hot water anywhere in the house you can hear this sound. If the heating is off and you turn on hot water, no sound. I also had regular service in November, so 3, 3.5 months...

I have a Vaillant EcoTec 831 (2013 so '2nd generation). I see online that this model has a bad reputation for PCBs, and mine had to be replaced. As it was out of warranty, I found a local plumbing engineering to do this. I don't know where he bought the replacement - and since issues, I've...

Hi all, I have an ecotec plus 832 and less than 2 weeks ago I installed a Vsmart thermostat by myself. The graph under information in the app doesn't look quite right to me and it looks like the boiler turn on/off instead of doing modulation. Am I missing something? Thank you.

Hello, Firstly please excuse my lack of knowledge with heating systems, ill Try and explain what I’m Trying to achieve the best I can. As per the description I have a 428 heat only boiler recently converted from open vent to a sealed system. This is operated by a Yplan and Hive controls. The...

Hi, I would like to upgrade my heating system (ecotec plus VMW 346/5-5 with a VRT370f thermostat) to be able to remotely control it. I was looking at installing a VRC720f thermostat with a VR921 box and several VR50 TRVs to be controlled with the Vaillant app. Before embarking in the full...

I have a Vaillant ecotec plus VMW 346/5-5 with a VRT370f thermostat. I had set the thermostat to a low temperature before going on holiday, when I returned the heating was on, date and time in the thermostat were wrong. There had been an interruption in the mains and the thermostat had...

Hi! I have a VRC700 coupled with VR71 at the moment, but all schemas I can find contain mixing circuits, but all circuits i have are just straight radiators. Is there a way to change them in VRC700 settings, or do I have to use different schema? Do you know where i could get a complete list of...

My Vaillant ecotec (unvented system, not combi) does not show the tap symbol, which normally would mean there is not hot water.. however it does seem to be heating the water. I installed hive 3 today, maybe this is related.. however it may have been doing this before, i never looked. Im not...