Paolo_Cortese My machine had this issue of water returning to the deposit. I changed not just the one way valve but the whole water distributor. That is solved now.
My machine does not overshoot without steam under 120º. Never. @kautivo ’s machine neither overshooted without steam pressure when arrived home, exactly as mine.
I don’t think it’s a good idea to change pid settings to go for a flat or variable profile as every (or almost every) Vesuvius owner will use, at least, a two stages profile, pre + plain. Anybody here using a one step profile with his Vesuvius? Whats the point of looking for an exclusive plain profile pid setting?
And yes, we can be fine with a plain 9 bar profile and steam at 130º tweaking pid settings but, for the moment, we can’t do the same with a “normal” vesuvius pressure profile. I hope this is just a step to get to the problem and solve it but it’s still far to be fine.
Why is not possible to have the machine working properly with factory pump settings?