We may have found other answers which could help you.
Click here for Combi Ferroli 77ffHi how to increase the water pressure on ferroli optimax 25C?
Ferroli DOMIcompact F 30 D?
F40 fault?
ferroli plus 31c has a code b2 any ideas?
i have a ferroli combi boiler i have 1/2 the radiators working and 1/2 not ?
How can i repair a noCN fault on my boiler?