I have been printing with my Lulzbot for a couple of years without issue; recently the lulzbot has started to go into a “thermal” runaway.
I have tried swapping out to a secondary hotend to no avail; what happens is I set a temp on the screen and the hotend just keeps going without stopping and then kicks the error.
I have not updated the firmware or made any other changes; to the unit. I can purchase another hotend but I wanted to be sure it was hardware prior to purchase.
The hotend IS heating up and the temp IS correct; it just doesn;t stop. Thank you for any feedback or help.