While you wait for answers, we may have found some information which could help you.
Click here for Ariston Combi Boilerariston boiler slow to ignite?
Why does my boiler remain ON - even when switch is moved to OFF?
No display on Ariston e-combi approx3yrs old?
Ariston Microgenus 23 MFFI PCB Defect?
boiler keeps going out?
I have an Ariston Genus boiler. Fault showing 30 40 50, I can't find manual?