After you connected the receiver, did you go through the "Satellite Setup" process? This is where you need to tell the receiver what type of dish you have. The Trav'ler should have the information in the manual for the screens that are shown. You may have to repeat this process occasionally.
If you don't have the manual, Winegard has the manuals available online. The Trav'ler manual is at
http://www.winegard.com/kbase/uploads/2452282.pdf.