We may have found other answers which could help you.
Click here for Boiler Fault OpeningHow can i repair a noCN fault on my boiler?
Hi how to increase the water pressure on ferroli optimax 25C?
Ferroli DOMIcompact F 30 D?
Parts for ferroli optimax he 31c ?
ferroli plus 31c has a code b2 any ideas?
Replace a diverter valve?