While you wait for answers, we may have found some information which could help you.
Click here for Heating Leak Pressure
FF360 Reset Button Problem?
i have a ferroli combi boiler i have 1/2 the radiators working and 1/2 not ?
Ferroli DOMIcompact F 30 D?
How can i repair a noCN fault on my boiler?
F40 fault?
Ferolli Optimax HE 31C expansion vessel change?