Morning all,

Been having some issues with my 220v Astoria Jun (branded Mr. Espresso).

I currently have the unit plumbed in, I have city water. The resting pressure on the machine reads a tick under 4 bar.

When I go to pull a shot, the pressure goes to 8 then ramps up to 9-10. The next shot I pull, same technique, grind, beans, the pressure ramps up to 10-12 with the needle bouncing a bit. I shut the pump off, wait a few seconds, and try again. Usually I can get readings all over the place, till it settles back to the reading of 9-10.

After pulling a shot, I would turn the unit back on to clean the portafilter, and noticed the pressure would jump all over the place, not staying at around 9-10 but going higher, and I could get the pressure reading to change simply by turning the unit on/off/on/off. It's not consistent.

I'm at a loss here as the unit's been running for a year straight with no issue in my house. I descaled the unit a few month's back. I'm wondering if I need to put a pressure regulator on my hard water line, or if something's gotten into the system through the city water and has gummed up the system/pump?

Any ideas or suggestions would be greatly appreciated!

Thank you for the insight. I've broken the machine down and cleaned everything out and it's back up on it's feet again!