part fan always on

dc42

@jay_s_uk is fan 0 the part fan? i thought that was fan 1?

We strongly recommend that you choose fan 0 to be the part cooling fan and fan 1 to be the hot end cooling fan.

jay_s_uk

@jtm fan0 is typically the part cooling fan, fan1 is the heatbreak cooling fan (the one blowing on the hotend).
That's how your config is setup.
Any fan that is thermostatically controlled can't be controlled using DWC.

JTM

@jay_s_uk ok so ive got the fan plugged into the wrong pin, its in Fan 1 , so i need to change to pin fan0?

jay_s_uk

@jtm you can either swap it physically on the board, so the part cooling fan is plugged into fan0 and the heatbreak fan is plugged into fan1 or you can swap the pin assignments in your config.g. i.e.

M950 F0 C"fan1" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1 ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan0" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45 ; set fan 1 value. Thermostatic control is turned on

JTM

@jay_s_uk i can change the plug easy, ill swith to fan0 and i have to change S0 to S1?

jay_s_uk

@jtm nope, your config is setup perfectly.
Just swap the fan over

JTM

@jay_s_uk i have a print running right now, if i swap to pin Fan0 will that create any problems whilst its printing?

jay_s_uk

@jtm golden rule is don't unplug anything while powered up

JTM

@jay_s_uk ok lol ill wait till its finished, but that will be tommrow. Ive tried it before but never has it run whilst printing

JTM

@jay_s_uk I powered down as you suggested, changed the plug to pin Fan0 and now it all works ! i have a controllable part fan thanks so much for your help, it was driving me crazy ! turns out i was changing things with power on.