vaillant ecotec

Hi guys, Hoping for a bit of advice as boiler has gone down with a 3 month baby in the house! Have a Vaillant Ecotec 418 has worked pretty solidly for 5 years. In Oct 2020 we had a sealed system fitted to improve water pressure and get rid of header tank in loft. Boiler copes absolutely...

Hi guys, Have a small problem. The stick on the hot water knob has broken off and part of it is still on the circuit board. It seems that it won't go back through and it doesn't look like i can pull it all the way through. I didn't want to force it, since it's still attached to the circuit...

Rads getting warm when CH system is off vaillant eco tec. Brief vid on how to change DV Valve https://www.youtube.com/watch?v=_F7AZHepZM0

Hello, I have a Combi Boiler (Vaillant Ecotec Plus 428) and an Unvented Cylinder (Vaillant uniSTOR VIH GB 180s). Since yesterday we have no more hot water in the house, it comes out cold or luke warm. But the heating works fine. When a hot water tap is fully opened, the boiler reads S.30 (no...

Hi, 1st post and I'm a bit of an amatuer (can do basic wiring) so be gentle... Basically I need to wire a 3rd generation Nest Heatlink to a Vaillant EcoTEC 937. Could someone please relate the Nest instructions to the boiler wiring diagram for me? I'm not sure which Nest instructions I should...

hi My boiler works fine for hearing water, but I'm having some problems with heating. The water flow through temp is set @ 60c but when I change the thermostat to a higher temperature it will only ever go to about 40c or so the n go less than this. My radiators get warm but the temperature...