We may have found other answers which could help you.
Click here for Boiler Combi Hot Water
Why does my boiler remain ON - even when switch is moved to OFF?
No display on Ariston e-combi approx3yrs old?
What is the problem?
Ariston Microgenus 23 MFFI PCB Defect?
I have an Ariston Clas He system with an error code of 1P2?
error code e02 wont work when pressurised?