While you wait for answers, we may have found some information which could help you.
Click here for Ariston Combi BoilerI have an Ariston Clas He system with an error code of 1P2?
gas boiler keeps going to reset?
error code e02 wont work when pressurised?
Ariston Microgenus 23 MFFI PCB Defect?
What is the problem?
No display on Ariston e-combi approx3yrs old?