homeburrero wrote:It would not explain ' 3) pressure drops quickly '. That is often due to a leaking anti-vac valve. Listen closely for a faint hiss there, or an occasional hiss like the sound of a water droplet on a hot stove. You can sometimes detect a leak with the help of an inspection mirror, looking for places where the steam fogs the mirror. But if you do this be sure to unplug the machine before getting in there with the mirror.
It doesn't seem to be leaking. But when I switch on the machine, while the pressure is still at 0 and it starts heating up, the breaker valve does let out some steam for about 5 seconds. I don't know why, but it happens each and every time I turn the machine on.
A sticking pressurestat switch or mechanism is often the cause of both 1 and 2. But in your case I think you saw the same issue in both the old and in a new pressurestat, which makes that a less likely culprit.
Yes, exactly the same symptoms with both pressurestats.
Just to be clear, when you say it sometimes goes to 1.6+, are you are saying that it's increasing and you play it safe at that point and turn off the machine. This would be indicative of either 1) the pressurestat failing to open (clog in pipe or sticky mechanism) or 2) a relay in the controller failing to open (a bad relay, or failing to properly sense and react to the pressurestat circuit).
That's what I mean, yes. At 2 bar, the breaker valve starts screaming.