- Jan 21, 2014
- 1,069
- Pool Size
- 20000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Just like Divin Dave said, they just don't do well with steps. And no, you really can't make them do steps with a remote. Mine never gets stuck on them, but they just haven't figured this out yet. I don't have a sun shelf, but my buddy with the Z5 has one. I'll get him to weigh in on how it does, but I just can't remember.
Best thing to do, is brush your steps before he runs. With all the work a Robot saves you, this is hardly even a drawback.
My Z5 makes it up the bottom and second step of my pool...basically it will climb until the top of the unit breaches the water surface. so it cleans my bottom two (of three) steps with about 50% effectiveness.
My Z5 also finds my little "deep end bench" as my wife calls it...it's at the same height as the second step. so it will drive right up there and cleans it fairly well. The rounded shape of the deck means the robot doesn't get it all...just most.
When I brush my pool, the only things I hit are the steps, the shelf/bench/deck thing, and the insides of the skimmer mouths.
Here's a pic of my Z5. this is as high as it's able to get.

Here it is trying to leave the pool...This is on my deck thing.

I'd say it depends on your build as to where the robot can get....I can make mine climb the stairs with the remote...but it's faster to just hit them with a brush.