While you wait for answers, we may have found some information which could help you.
Click here for Central Heating Timer Ferroli
ferroli plus 31c has a code b2 any ideas?
Replace a diverter valve?
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 Optimax HE31c a26 problem?
F40 fault?