While you wait for answers, we may have found some information which could help you.
Success
Message
changing a FP 2000 Programmer?
Radiators?
identifying the flow and return pipe?
Potter powermax HE won't refill?
Potterton performa 24 boiler?
How to get hot water?
threeway valve?
We are not getting hot water Whymight that be?
No heating or hot water?
no fault code ?
suprima 50?
dhw working fine but chw switsh off after 10 second?