While you wait for answers, we may have found some information which could help you.
Click here for Boiler Taps Central HeatingReplace a diverter valve?
ferroli plus 31c has a code b2 any ideas?
Parts for ferroli optimax he 31c ?
F40 fault?
Hi how to increase the water pressure on ferroli optimax 25C?
Connections on Ferroli F24 Gas Valve?