I’ve been noticing recently that my hot end (e3dv6) on my taz 4 is having a really hard time keeping the temp up. Things like fast extrusion and fan turning on literally sap the heat away, and while printing I’ll watch the temp slowly drop down.
This is strange because it will heat up to target temps, and if I slow things down or turn off fan it starts climbing back up to target temp.
It’s almost like the heater is not strong enough to overcome heat dissipation in normal use…
The funny thing is, when I run PID autotune the reported temp shoots up 2-3 times faster, just like it did when I first installed it. However once I set PID and try a normal warmup, it’s back to it’s slow, lethargic warm up speeds and performance.
It CAN heat up fast enough, but something seems to be limiting it during normal use? Any ideas?
Things I’ve tried:
- Setting PID to various things, running autotune
- setting thermistor to 5 in firmware
- setting max PID to 255 in firmware for higher current
I’m using this thermistor:
and the hotend heating cartridge is 24v