Dear Jürgstauber
That is difficult to answer.
As explained (for example) here https://community.thermaltake.com/index.php?/topic/210798-error-code-h_0x0001/
it depends on many things (mainboard / operating system / controller etc).
I myself have never had a problem with it
Unfortunately, no, I have installed all three. I have also installed 5 of the 12s, and one had a defective fan after a short time. So I thought about buying a new one. I then decided on a 5-pack. because the consideration was if another one has a defect, I still have a replacement, because five are cheaper than buying one.
Mit der Riing Plus Software die du beim Hersteller laden musst.
Hier: http://www.thermaltake.com/Cooler/Case_Fan_/Riing/C_00003057/Riing_Plus_14_RGB_Radiator_Fan_TT_Premium_Edition_3_Fan_Pack_/Support.htm
You can adjust these at any time via software http://www.thermaltake.com/MICROSITE/Riing12RGBRadiatorFanTTPremiumEdition/index.html#3rd .
If you are asking if you need the controller to change the LED colour etc., yes: Yes, the controller is a must.