I’ve been having some trouble with thermal runaway lately on my MP3DP. It’s using a generic MK8 extruder and whatever heater and thermistor that came with it. It used to run fine before I swapped in a bunch of new parts. RAMPS with DRV8825s to SKR 1.4 Turbo with TMC2209s, 39 oz/in steppers to 84 oz/in steppers. But no changes on the heat side of things. I’ve run the auto PID multiple times and saved and verified. But say I print something, then remove the new part, a little time goes by while I load up another model or whatever and the hotend is slowly dropping in temp. When I go to run the next print job the hotend will start heating, but it seems to take a little longer than the thermal runaway threshold likes and I get halt error.
I guess my questions are… Is my heater failing? Should I run the auto PID a couple more times? Is there a way to adjust the thermal runaway threshold without a firmware recompile? TIA