problem with case and system fans

[Martx]

i connected two fans from h80 to my mother board sys1,2 or 3 header but it looks like its not controlling the fan speeds,same with the case fan ,sometimes it doesnt even spin. motherboard is gigabyte z87-d3h, if I connect h80 to cpu header then it spins at full speed.no speed control at all. fans are with 4 pins.

 

[Martx]

Did you try setting fan control to voltage in the BIOS for CPU fan headers

no, does it have to be manual settings?

 

[Martx]

Ive tried to set values for pwm on fans,but it doesnt make any difference,they still spinning at full speed.