3.0 Heater/Fan configuration

[dc42]

@zemlin said in 3.0 Heater/Fan configuration:

I'm not exactly sure what triggers the change, but when I went to run a part, the hot-end fan doesn't start up - but in the Dashboard Fan2 appears, and the slider appears to override the thermostatic control and the fan doesn't run.

By "run a part", do you mean run a print job from SD card? If so, then perhaps something in the print job is reconfiguring the fan - in which case, please share the print file.

[zemlin]

I really appreciate all the help.
I changed the can lines per @DIY-O-Sphere to

M950 F1 C"fan2" Q500 ; create fan 2 on pin fan2 and set its frequency
M106 P1 S1 H1 T40 ; set fan 2 value. Thermostatic control is turned on

Functioning properly and not showing up on the dashboard slider.
The Z-Probe on this machine is accelerometer-based and that's a little flaky, but doesn't seem to be software related.

Up and running now, so 'til next time ...