We may have found other answers which could help you.
Click here for Combi Boiler SwitchFerroli domicondens he26 C fires up but doesn't appear to rectify ?
Replace a diverter valve?
I have a Ferroli FF 77 the pilot light has gone out will not stay on ?
Connections on Ferroli F24 Gas Valve?
Parts for ferroli optimax he 31c ?
Hi how to increase the water pressure on ferroli optimax 25C?