While you wait for answers, we may have found some information which could help you.
Click here for Service Combi Boilerboiler keeps going out?
Why does my boiler remain ON - even when switch is moved to OFF?
I have an Ariston Genus boiler. Fault showing 30 40 50, I can't find manual?
What is the problem?
error code e02 wont work when pressurised?
Ariston Microgenus 23 MFFI PCB Defect?