@mpirringer I just got the printer 2 days ago so a loose wire or bad thermistor would be disappointing. I did re-run the PID tune again and now the printer seems to be holding the correct temperature. That's for the help.

@mpirringer I just ran the PID tune again for a temp of 240 and now my nozzle temp is stable. Go figure.

@mpirringer I followed the directions for the PID tune and now I get an error:

@mpirringer The temp fluctuates +- 5 degrees from 245. It will range up and down like this: 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 248, 247, 246, 245, 244, 243, 242, 241, 242, 243, etc...

The fan being on or off doesn't seem to make any difference.

I have a brand new Pulse XE E-422. I've been running test prints with the RYNO filament with the nozzle temp set to 245. While printing the temp is fluctuating between 240 and 249. I've not see this on other printers I own. Support suggested I check the silicone sock. It appears to be in the proper place.

It's probably not related but when I received the printer, one of the ribbon cables to the display wasn't attached. I connected it and everything fired up fine.

Suggestions?