@dc42 Just for the information,
I restarted the printer that gave over voltage error, secured the piece on the bed and continued printing. It's been 13 hours and still printing. Most of the time I printed in between 105% to 110% and no errors what so ever.
Result of actual M122 :
Supply voltage: min 24.0, current 24.1, max 24.4, under voltage events: 0, over voltage events: 1, power good: yes
So it is very hard to find the source of these kind of errors that don't persist and are very random.
Is there anything that comes into your mind ?
Thank you so much.