At first I noticed while steaming milk, the temperature ready light would turn off before I was done. To get around it I just turned off the steam, waited for it to get up to temperature again, and then resume.
This issue got worse over time.
Now when I brew shots the ready light turns off before the shots are even finished. I had stopped using this unit for years as a result.
Working on a different issue today I either broke and lost or suddenly discovered that the L-spring is missing from the portafilter.
Before I order a replacement spring I was hoping to have a plan for the temperature issue.