While you wait for answers, we may have found some information which could help you.
Click here for Power Boiler HelpError light blinking (orange colour) on Ariston e-combi boiler?
ariston boiler slow to ignite?
boiler keeps going out?
error code e02 wont work when pressurised?
What is the problem?
Ariston Microgenus 23 MFFI PCB Defect?