After you asked me to look at the settings, I decided to look in CURA. In the cura settings (Cooling Fan Number) it was 2. I changed it to 0 and now the code sent is just "M106 P255" and the 2 fans are turning on.

@phaedrux said in Print wtih 2 Colling fans:

@mangelli said in Print wtih 2 Colling fans:

M106 S255 P2

Your slicer probably has a setting to tell it which fan to target. If you have it leave off the P value, the duet will just use the fans assigned to the tool.

Yes, the problem was the Slicer`s settings. Thank you so much for your help.
I was looking in the wrong place all the time.

After you asked me to look at the settings, I decided to look in CURA. In the cura settings (Cooling Fan Number) it was 2. I changed it to 0 and now the code sent is just "M106 P255" and the 2 fans are turning on.

@phaedrux said in Print wtih 2 Colling fans:

What fan commands does your slicer send to start the fans?

Hello,
Sorry for the Delay.

Follow the g-code.
M106 S255 P2

I don`t know why it is like this.

@phaedrux said in Print wtih 2 Colling fans:

Can you try swapping the wire plugs for fan 0 and 2 and see if it's the port that isn't working or the fan.

Hey, both Fans is working. They just don`t start together. If I move the Tool fan, both fans move together.

Hello,

I have a Duet Maestro and configure my Fans on Pin0, Pin1 and Pin2.
I have 2 colling fans(0 and 2) and one hotend fan(1). When I start to print, just the PIN 2 and PIN 1 start.
I looked a lot and try some configs but none seems to work.

The Tool move both fans at same time but just start one.

Follow the config.

; Fans
M950 F0 C"fan0" Q500 ; create fan 0 on pin fan0 and set its frequency
M106 P0 S0 H-1 ; set fan 0 name and value. Thermostatic control is turned off
M950 F1 C"fan1" Q500 ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45 ; set fan 1 name and value. Thermostatic control is turned on
M950 F2 C"fan2" Q500 ; create fan 2 on pin fan2 and set its frequency
M106 P2 S0 H-1 ; set fan 0 name and value. Thermostatic control is turned off

; Tools
M563 P0 S"Hotend" D0 H1 F0:2 ; define tool 0
G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C