Stays in the deep end

by Mike G
(Raleigh NC)

I have an older model Dolphin Pro. The vacuum works really well, but it heads to the deep end of the pool and seems to just move back and forth in the same section. I will not work on the shallow end of the pool. Any hints or tips on how to get the logic reprogrammed to see/clean the whole pool?
ADMIN REPLY: Change the handle position and try a new bag.