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