While you wait for answers, we may have found some information which could help you.
Click here for Ariston Microgenus 24 BoilerI have an Ariston Clas He system with an error code of 1P2?
boiler keeps going out?
What is the problem?
gas boiler keeps going to reset?
error code e02 wont work when pressurised?
Ariston Microgenus 23 MFFI PCB Defect?