We may have found other answers which could help you.
Click here for Heating Hot Working RedConnections on Ferroli F24 Gas Valve?
Ferroli Optimax HE31c a26 problem?
Parts for ferroli optimax he 31c ?
i have a ferroli combi boiler i have 1/2 the radiators working and 1/2 not ?
Replace a diverter valve?
Ferroli DOMIcompact F 30 D?