Wp redirection when a visitor comes from google

I have the http://www.energiakoi.com/climaline wp site.

When i am trying to enter from google (search climaline.gr) it redirects me either to google home page or to http://www.online-one.com (blocked for malware site, do not hit).

I have check .htaccess files and there is not seems to be a problem. I also have scan it in sucuri.net and there is no found malware.
Sucuri give me the alert:

Suspicious conditional redirect.
Details: http://sucuri.net/malware/entry/MW:HTA:7
Redirects users to:http://178.162.129.223/

Please help me if you can.