Vaillant TurboMax Plus 828e ?
Since I started to use my heating this year I am having problems with my hot water. The combi boiler has worked fine till now. It's 7 years old. Hot water works fine but the water keeps going hot then cold. The display keeps running in this sequence S.10, S.13 lastly S.14 then back to S.10 etc. I have changed the diverter value today but no change.
Rupert, October 2008
