Pentair Warrior SE climbing wall but not going along waterline

[DoDo1975]

Hi,

Previously my Warrior SE would climb the wall, change it's angle and move along the waterline. This year, it climbs straight up, but just stays in place for a while cleaning the same spot before moving back down.

Anybody know what might cause this?

 

[Texas Splash]

"1975", I wanted to check in with you since no one has replied to your question yet. Does that cleaner of yours still have a one-track mind? Still looking for more ideas from TFP members?