Heater over and undershoots
I recently have had issue with my hot end thermistor.
I have replaced the thermistor and the wild temperature readings have been fixed. But…
After tuning i get more fluctuation in temperature than prior to the problems. Any tips to calm down the sign wave temperature over and undershooting?
If the temperature oscillates above and below the target temperature, increase the D parameter in the M307 command. Try a 50% increase.
If the temperature doesn't oscillate but it overshoots the target temperature during initial heating, increase the A parameter. If it undershoots during initial heating, reduce the A parameter.
Thanks. After PID Tuning a second time and setting a larger D value, the fluctuation has been fixed.