Doheny's Discovery (by Maytronics/Dolphin) will not move.

LisaDLu

Well-known member
Nov 14, 2014
120
Palm Desert, CA
I have a 4 year old Doheny's Discovery that will not move when I turn it on. More specifically, it will not perform the normal self-test cycle at the beginning of its operation. When I turn on the unit, it moves about a foot in reverse, but it will not move the same foot forward in order to complete the self-test cycle. It then seems to shut itself off. I have taken it apart to make sure there are no pieces of palm tree or anything else that would tangle the impeller, wheels, etc. Any ideas as to what might be the cause of this problem would be appreciated. Thank you!
 

JoyfulNoise

TFP Expert
Platinum Supporter
May 23, 2015
16,219
Tucson, AZ
Bad motor is the most likely culprit. You’ll have to get it serviced. They will just replace the old motor with a new one. Costs a couple hundred bucks plus shipping (if you don’t have a local shop).
 

JoyfulNoise

TFP Expert
Platinum Supporter
May 23, 2015
16,219
Tucson, AZ
Ok, thank you - that's what I was hoping against … LOL! Oh well, will look and see if there is a local shop that can do it. Thank you again!
Yep. The three biggest ticket repair items for these robots are the power supply, cord, and motor. When they fail, there’s no repairing them, they simply get replaced. An authorized repair shop can diagnose exactly which part is bad and do the repair. Motors run about $300-$400, power supplies are $200-$300, and a new cord is about $150-$200. Everything else on the robot are wear & tear type items that generally are easy enough to DIY fix them. Spare parts and replacements can be ordered from Marina’s Pool & Spa. You can DIY a motor replacement but it does take a fair bit of disassembly and care when doing that so if you’re not confident about doing it and/or you want a guarantee on the repair work, best to let an authorized shop handle it and you pay the extra for labor.