While you wait for answers, we may have found some information which could help you.
Click here for Boiler Pressure Heating LoopI have an Ariston Clas He system with an error code of 1P2?
gas boiler keeps going to reset?
No display on Ariston e-combi approx3yrs old?
What is the problem?
ariston boiler slow to ignite?
I have error code 108 on my Ariston Combi boiler what do I do to fix it?