We may have found other answers which could help you.
Click here for Boiler Water Pressure FerroliReplace a diverter valve?
Ferroli Optimax HE31c a26 problem?
ferroli plus 31c has a code b2 any ideas?
F40 fault?
FF360 Reset Button Problem?
i have a ferroli combi boiler i have 1/2 the radiators working and 1/2 not ?