We may have found other answers which could help you.
Click here for Boiler Heating Temperature
how can I have just hot water from my Protherm 40 - 50 CI boiler?
problem with protherm 80e?
Protherm 80e - Fault F1?
protherm 80e combi boiler?
my protherm 100ec combi keeps giving the fault f1?
protherm 80E keeps cutting out?