I'm OK with electronics and general plumbing stuff. Is changing a early diverter valve somthing that I can do myself or does it have to be done by a corgi registered guy.
weareleeds - yes the central heating pipe does get warmer with preheat off and like i mentioned the HW is stone cold when preheat is off.
pannierstan - was the "Oh dear" comment just a general vote of sympathy or do you know if point 2 means something very bad? :?
Thanks a lot for that, will try it later tonight. 2 important things to mention.
1. I made a mistake on the model and it is a Vaillant Turbomax Plus.
2. I forgot to mention that when I switch off the "warm start" which I'm guessing is preheat we get No HW at all.
Hi
I have a Vaillant ThermoCompact(model is either 615E, 620E, 624E, 628E) . I think its about 4 years old. The pressure in the system is set to around 1.5bars.
I have 2 issues with this little blighter:
1. The CH works fine just by itself and the hot water works(more or less see...