Topics created by therealawyt

@therealawyt said in cooling fan under-volt:

it seems that adding the f3 doesn't do anything as when I turn on what is supposed to be the tool fan nothing happens. but when I turn up the slider for that specific fan it turns on

You need to make the corresponding tool active M563 F parameter to work, because different tools can use different print cooling fans. So if you have defined your tool using M563 P0 H1 D0 F3, send command T0 to activate that tool, then a M106 command with no P parameter should control fan 3.