We may have found other answers which could help you.
Click here for Water Ferroli Optimaxferroli plus 31c has a code b2 any ideas?
How can i repair a noCN fault on my boiler?
Ferroli Optimax HE31c a26 problem?
I have a Ferroli FF 77 the pilot light has gone out will not stay on ?
Replace a diverter valve?
Ferroli DOMIcompact F 30 D?