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