While you wait for answers, we may have found some information which could help you.
Click here for Hot Intermittent BoilerI have error code 108 on my Ariston Combi boiler what do I do to fix it?
Ariston Microgenus 23 MFFI PCB Defect?
gas boiler keeps going to reset?
error code e02 wont work when pressurised?
Why does my boiler remain ON - even when switch is moved to OFF?
boiler keeps going out?