We may have found other answers which could help you.
Click here for Combi Boiler Overheating Red Light
Ariston Microgenus 23 MFFI PCB Defect?
error code e02 wont work when pressurised?
boiler keeps going out?
ariston boiler slow to ignite?
I have an Ariston Genus boiler. Fault showing 30 40 50, I can't find manual?
What is the problem?