Best frequency for E3D 24v Heatsink fan at lower power %?

[dintid]

From my previous printers I've always run the heatsink fan on E3D at between 50-75% but try as I might, I can not get it to run at under S0.98 power setting

I am hopefull this range of adjustment can be increased using a non-default frequency, but maybe someone has gone through this, so I don't have to start from nothing?

My current config is as follows:

• FAN1

• Power 98%

• Turned on/off by Heater 1 at 50c

[[language]]
M106 P1 S0.98 H1 T50 ; Set fan 1 - HS

```Relevant Gcode: [https://duet3d.com/wiki/G-code#M106:_Fan_On](https://duet3d.com/wiki/G-code#M106:_Fan_On)

Found I can get it down to S0.97 by running at F400\. Running at lower than 250 makes it stop… I would like it to get much lower though.

[dc42]

See https://www.duet3d.com/forum/thread.php?pid=11148#p11148 for what I found.