Corsair 750d rear case fan not working

[Allen_]

I recently built a pc using a corsair 750d as my case. After using it, I realized the rear fan does not work. I have tried to turn it on using the msi bios, and msi control panel. I checked the motherboard and the fan is wired securely to sysfan3. My 2 front case fans are wired to sysfan1 and sysfan2 and they work fine. How do I get the rear case fan to work?

 

[Vic 40]

Does it work at sysfan1 or 2? If not is it probably the fan itself.

 

[Allen_]

Does it work at sysfan1 or 2? If not is it probably the fan itself.

it works on sysfan1 and sysfan2

 

[Vic 40]

The other fans also don't work on sysfan-3?

 

[Allen_]

The other fans also don't work on sysfan-3?

Yeah it's most likely the fan. Is a rear case fan necessary? My temperatures are pretty cool

 

[Vic 40]

Yeah it's most likely the fan.

Fan or fanheader?

Is a rear case fan necessary? My temperatures are pretty cool

Not necessary,but wanted to suck the hot air out. Since temps are good should you be fine without it.