turbomax plus

I am hoping someone here can help - have looked through this very helpful forum and couldn't find a similar issue discussed. I have a Vaillant Turbomax plus 828E which works intermittently for both hot water and heating - it comes on sometimes and at other times it doesn't. From what I can tell...

I have a Vaillant TurboMax with a slow leak inside the combustion box at the union of the right hand side of the main heat exchanger. The leak is small as the pressure drops very, very slowly (I only found out about it by seeing water marks). There is evidence of limescale on the flood of the...

Dear whoever can help.... I installed a full (18 feed, 4 story) radiator system into my own house 14 years ago. It’s a 1860 building ... I used the Vaillant turbomax 828e...Over the years I have replaced the pressure switch once, the fan assembly once and the PCB once due to a intruding slug...