vaillant

Hi All, I have got question on installation Nest Heat link to boiler. I have got Vaillant Ecotec Pro28. I currently have Honeywell thermostat and receiver (wiring) has been shown on picture attached. Should I do exactly the same as on the picture above ie: N to N L to L With yellow/ green cable...

Hello, Recently moved to a new rental place. The Vaillant EcoTec Pro 24 boiler was empty (I think for quite a while), refilled it via the loop to 1.5 bar & bled the radiators to remove any air. One of the valves (the smaller handle) in the filling loops leaks very slightly but I don't think...

I will try give as much info as possible to help. Vaillant ecotec 24. Problem started a few weeks ago with F75 error code and having to keep resetting the system to get hot water to work. I changed the pressure sensor and sorted out the F75 error and the pressure now rises as it should when the...

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+...

I’ve recently had a nest 3rd gen thermostat installed into this boiler, seemed nifty at the time however, this replaced no previous thermostat (we used to manually switch it on and off and there’s a panel at the front with a analog timer). So the nest 3rd gen replaced this. It’s been a few...

Hi All, Just to say I am a end user not plumber. Have a problem with the hot water. It intermitantly runs tepid. About 3 months ago I had the Diverter valve changed as I had no hot water at all. Since then I have had tepid water intermittently. I happens mostley first thing in the morning. The...

Hi All, I've tried to look for this question in the forums and some are close but don't seem to be exactly what I have. I am trying to wire a bh3000 thermostat to an 831 vaillant boiler. I have two wires from the wall (brown and blue) + earth. I have connected the two wires from the...

So I have a F.75 error code on my Vaillant ecotech plus and my pressure gauge is low. I watch the you tubes videos of what to do and it seems straightforward. Except I have no taps to turn under my boiler. They are just not there. Any advice on how I get heat tonight? What can I use to open...

Hi Guys, New to these forums and new to the Vaillant VRC470 weather compensator! I've seen many other threads on people trying to get there heads around how this system works. I was wondering if anyone could help with the following: 1) How do I know whether I have two heating zones, I have...

Hi - I know there are multiple post regarding Next setup and connection however I'm unable to find any information on my specific issue. I this has been covered, please point me in the right direction. I have a y plan system with a Vaillant ecotec boiler set up with a 3rd gen Nest. When turning...

Hello, I have a vaillant boiler plus a hot water tank. I changed diverter valve 3 years ago because it did not move correctly. For a month now I have had a new problem with this diverter valve but slightly different and I can not find the cause. The valve works perfectly for central heating /...

Hi, We have a problem with our bath mixer tap. When you run the hot tap it does get hot for a bit but then goes lukewarm.. eventually hot again but due to the constant cycling between hot and lukewarm you can't run a hot bath. The central heating is off, the combi boiler is a Vaillant 835/2 E...

Hi all, After some help with my AquaPlus boiler. The boiler seems to be rising pressure on the gauge with the cold water service valve open as normal. I’ve closed the valve currently without use of the boiler as I’m getting a constant trickle of water through the outlet pipe to my driveway...

Hi All, I would like to replace a Honeywell room thermostat with a Drayton Wiser (I'll also be replacing the radiator valves later). Can I just confirm that: N & L stay the same 2nd L to A loop in the Honeywell should now be L to 1 in the Drayton 2 in the Drayton stays empty B in the Honeywell...

Hi All, I'm looking to wire up our Ecotec 937 plus with Opentherm and Evohome. So far I can source the VR33 module and have located the X31 interface on the PCB where this should be plugged in. Unfortunately it appears to have another connection already plugged into this serving the shift load...

Hi guys, I am thinking of getting my heating control a little bit smarter. Currently, I have "old" Salus RF thermostat with touch ring, but not connected to any hub, so I can't control it outside of my house. I was thinking about getting micro usb powered d1mini development board with relay...

hi all, I am thinking about replacing My Vailant VRC470 with a Vaillant vSmart controller but I am concerned that the WC I have at the moment using a sensor on the north face of my property is far more accurate than the general weather data derived from the internet that the vSmart uses. Am I...

Hi all, I'm wondering if someone can validate my wiring plan for my Nest + Vaillant Ecotec Plus boiler. It's an early Gen1 nest so only does the heating. The boiler is new and the installers were confused by the older Nest so at the moment the Heating and Hot Water both have to be on all the...

Evening, Having some trouble with my Vaillant Ecotec Plus 418, which is showing a F22 error code - low water pressure. Sadly there isn't a filling loop that allows me to repressurise it. Does anyone know how I might get around this? When I reset it, it starts up but then winds down quite...

Hi. Got a Vaillant ecoTEC pro 28 combi boiler which is about 10 years old. I had a plumber come today as our boiler continually turns off with a F.62 warning and red light, have to press the flame button with a cross on it to reset and get hot water back. The pressure also continually rises to...