Thank you! That did the trick! I already had a replacement hotend just in case, I just didn't know how to know when to change it out.

I have an Entina 2S which has wished great for a couple of months. This morning, I have been receiving a "Nozzle temp Error S1". It will heat up enough to change filaments, and will start a print, but then that error occurs and the print fails. What can I do? Basic instructions of you have them, please. I'm a novice.