We may have found other answers which could help you.
Click here for Ferroli F30b BoilerI have a Ferroli FF 77 the pilot light has gone out will not stay on ?
F40 fault?
Replace a diverter valve?
Connections on Ferroli F24 Gas Valve?
Ferroli domicondens he26 C fires up but doesn't appear to rectify ?
i have a ferroli combi boiler i have 1/2 the radiators working and 1/2 not ?