While you wait for answers, we may have found some information which could help you.
Success
Message
Ferroli Optimax HE31c a26 problem?
F40 fault?
Parts for ferroli optimax he 31c ?
Ferroli DOMIcompact F 30 D?
Replace a diverter valve?
i have a ferroli combi boiler i have 1/2 the radiators working and 1/2 not ?
FF360 Reset Button Problem?
ferroli plus 31c has a code b2 any ideas?
Ferolli Optimax HE 31C expansion vessel change?
Hi how to increase the water pressure on ferroli optimax 25C?
How turn off heating in Ferolli Optimax 31c?
How can i repair a noCN fault on my boiler?