While you wait for answers, we may have found some information which could help you.
Click here for Ferroli Hot CentralReplace a diverter valve?
Hi how to increase the water pressure on ferroli optimax 25C?
ferroli plus 31c has a code b2 any ideas?
Ferroli DOMIcompact F 30 D?
Parts for ferroli optimax he 31c ?
How can i repair a noCN fault on my boiler?