While you wait for answers, we may have found some information which could help you.
Click here for Boiler Refuses Lightariston boiler slow to ignite?
Ariston Microgenus 23 MFFI PCB Defect?
I have an Ariston Clas He system with an error code of 1P2?
gas boiler keeps going to reset?
error code e02 wont work when pressurised?
I have an Ariston Genus boiler. Fault showing 30 40 50, I can't find manual?