While you wait for answers, we may have found some information which could help you.
Click here for Heat Hot Water TapAriston Microgenus 23 MFFI PCB Defect?
gas boiler keeps going to reset?
I have an Ariston Genus boiler. Fault showing 30 40 50, I can't find manual?
No display on Ariston e-combi approx3yrs old?
I have an Ariston Clas He system with an error code of 1P2?
Why does my boiler remain ON - even when switch is moved to OFF?