Hard Disk Almost Full

Hi, 

I use SEP 12.1 RU6, all of a sudden hard disk under RED color, I think almost 500gb utilized for hidden temp files, where can I look the huge hidden files of SEP.

I have 1Tb hard disk with win7, msoffice and then the SEP. All the data folders of office is located on different drive.

C:\Program Files\Symantec - is empty

C:\Program Files(x86)\Symantec\Symantec Endpoint Protection Manager - amost 21Gb

Ridnacs screen attached

Thanks for your time.