Part cooler always on

[singtoeil]

Hey,
Im pretty new to 3d printing and i got a radial fan to cool the parts, but it alwas runs as soon as i turn on the printer (geeetech prusa i3 pro b with gt2560 board) https://nox.tips/ https://xender.vip/.
I tried turning it off in repetier and on the lcd, but nothing worked.
I plugged the fan into the pwm fan slot, but i also tried the other fan plugs