While you wait for answers, we may have found some information which could help you.
Click here for Ferroli Boiler Problem
Replace a diverter valve?
i have a ferroli combi boiler i have 1/2 the radiators working and 1/2 not ?
F40 fault?
FF360 Reset Button Problem?
Hi how to increase the water pressure on ferroli optimax 25C?
How turn off heating in Ferolli Optimax 31c?