Recent content by back2thefuture

Thanks guys, so the best thing would be to get an engineer out to change this rectangle looking part?

What does that mean exactly and is this a problem?

Hi all, We have a vaillant 438 boiler. Are these rust stains normal? Many thanks

Hey all I hope you can help. We have an eco etc plus 438 boiler with a evocyl water tank upstairs. We have two vaillant thermostats, the vr720 and vr92 with weather compensation. There are two heating zones. With 8 rads upstairs 5 downstairs. Lately the boiler seems to drop to 50 and go up to...