While you wait for answers, we may have found some information which could help you.
Click here for Combi Boiler Not Workingerror code e02 wont work when pressurised?
Why does my boiler remain ON - even when switch is moved to OFF?
ariston boiler slow to ignite?
Ariston Microgenus 23 MFFI PCB Defect?
gas boiler keeps going to reset?
No display on Ariston e-combi approx3yrs old?