While you wait for answers, we may have found some information which could help you.
Success
Message
my protherm 100ec combi keeps giving the fault f1?
protherm 80e combi boiler?
protherm combi?
my protherm 40-50ci boiler blows fuse?
No hot water?
Protherm 80e - Fault F1?
protherm 80E keeps cutting out?
Protherm 100ec Boiler won't light?
problem with protherm 80e?
can i repair a diverter valve for a protherm 80e?
Protherm 100ec overheat trip problem?
how can I have just hot water from my Protherm 40 - 50 CI boiler?