While you wait for answers, we may have found some information which could help you.
Click here for Boiler Up Aristonerror code e02 wont work when pressurised?
No display on Ariston e-combi approx3yrs old?
ariston boiler slow to ignite?
I have an Ariston Clas He system with an error code of 1P2?
What is the problem?
Error light blinking (orange colour) on Ariston e-combi boiler?