vaillant

Am considering fitting the Vaillant weather compensator, the logic behind it makes sense to me but not sure if we have the right setup for it to work properly. Existing system is: 637 Plus system boiler UniStor cylinder Zone 1 - Radiators (upstairs & downstairs) with Honeywell room stat Zone 2...

Sorry to put another Hive install thread here, but although it's obvious where the live and neutral go, I'm having difficulty identifying where the other two need to be connected. I've Googled the hell out of it, but I think the 825 being fairly new doesn't help things. Help would be extremely...

hey all, I have a Vaillant setup in my home comprising of an EcoTec System Boiler (637) and a UniStor cylinder (310 litres) as well as a VRC 470 Weather Compensator. When the system was installed we were not able to get a high pressure output from the system as the pipes coming into the house...

Hey all, Apologies if this is a really silly question but I have has the VRC 470 installed with a Vaillant system boiler & Vaillant cylinder. Everything is working fine and I have learnt a lot about using the VRC 470 controller (which you need a master's degree in). However I am missing the...

Just sent this to their customer service dept: -- I've just had the unfortunate experience of becoming one of your service plan customers, and it's been all bad so far. Zero points for customer service. What happened? The inlet pipe on the heat exchanger of my Vaillant ecoTEC plus 624 boiler...

Hi All My 831 looks like it's given up. All working fine after 1:30hrs of use today, now all of a sudden it's completely dead, nothing on the display and no sign of life at all even after a power cycle. Power getting to the board ok, fuse ok on the board. Anything else I can check or is this...

Dear everyone, I have a Vaillant ecoTec Boiler in my bedroom and it is making really loud and disturbing noises throughout the day again and again. Sometimes it is relatively quiet, then it is really loud again. These episodes last from a couple of minutes to over an hour and happen any time...

Hi hoping someone can help, I have the Vaillant Turbomax VUW 242/282 combi boiler. I had to remove 2 radiators for decorating, I turned the mains water off, drained the system from a downstairs radiator, (without turning boiler off! It was in taps only not CH) removed the two radiators, capped...

I am in need for some help on my Vaillant 837 EcoTec Plus combi boiler (installed in Dec 2009) that is making noise. Same noise as in this video. While I was decorating the house I had taken off the radiators from wall and left the thermostatic valves on closed position. After many weeks (6...

Hi I've just had a new boiler installed in my home. The boiler I have replaced is a Vaillant VCW Sine 18 T3 WF H. It's in working condition, was just a little temperamental and I couldn't be bothered with the chew of potentially being without hot water etc. during the winter. My question is...

Hello, I have a bit of a problem. I have a Vaillant boiler, which is great. The Timerswitch130 inside the boiler is terrible. I want to know if I can remove it completely [leaving the fascia exposed] and not replace it, and have the Honeywell control the boiler on its own. The reason I...