While you wait for answers, we may have found some information which could help you.
Click here for Starts Minutes StartFerroli Optimax HE31c a26 problem?
Ferolli Optimax HE 31C expansion vessel change?
FF360 Reset Button Problem?
Hi how to increase the water pressure on ferroli optimax 25C?
F40 fault?
i have a ferroli combi boiler i have 1/2 the radiators working and 1/2 not ?