EZ Mode and Advanced Mode - different cha_fan readings...

[disnemar]

I've got one case fan connected to CHA_FAN3 on the motherboard(m5a97 EVO R2.0). HWMonitor doesn't see it at all but SpeedFan and FanExpert detect its speed:
http://i.imgur.com/wXipzfc.png
http://i.imgur.com/JU5PD8C.png

But the weirdest thing is that EZMode shows that FAN1 not FAN3 is actve.On the other hand, Advanced Mode shows everything correctly : FAN3 is active

http://i.imgur.com/pEpT8U2.jpg

What's wrong??