My Dolphin won't run for more than 30-60 seconds!

by Gordon
(Belmont, CA)

This seems to be a common problem, judging by other comments posted here. I have a Dolphin Dynamic pool cleaner (about $1800 at Leslie's Pool Supply). When I turn it on at the power supply, it starts up normally, does its little pivoting pirouette and then sets off in one direction with the impeller spinning and driving the exhaust water out the top. Within about 30 seconds it begins to slow down to a crawl, then the impeller stops turning, the water stops flowing so it loses the ability to suck debris in through the intake doors on the bottom and then it comes to a complete stop. All within about 60 seconds. If I shut it off for a minute and then turn it on again, it starts up again just as normal but repeats the process, coming to a halt in less than a minute. The bag is clean, I have checked for debris or foreign objects in the drive belt. I have not removed the motor housing but that is not owner serviceable anyway. Has anybody found a solution to this problem? Seems crazy that these units should fail so quickly!

Comments for My Dolphin won't run for more than 30-60 seconds!

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Sep 21, 2018
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Hair was the problem
by: Tom

Tiny piece of hair was indeed the problem,
Thanks ;-)

Sep 09, 2018
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Mine too.
by: Anonymous

I am at wits end, mind does the same thing. I took it apart and check for weeds or hair around the motor blade, Everything is clean. But it starts out find then just shuts off. I just don't know what to do. It's always worked fine.

Aug 08, 2018
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Dolphin Nautilus CC Stops After 5 Seconds
by: Anonymous

New Dolphin Nautilus CC (purchased 5/18) stops after 5 seconds. Cleaned impeller and everything else. Must be electrical or board issue. Any possible troubleshoots/solutions.

Jul 16, 2018
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Hexagon adapter adjustment
by: Sean

My Deluxe 4 kept shutting off after a few seconds or a minute at most. I cleaned it all out, including the impeller. Ran it for a bit out of the water so I could see what was going on and it was the hexagon adapter slipping. I took it out, gave a slight hit with a hammer to tighten up the gap space and it's working perfectly.

Jun 17, 2018
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Problem solved
by: Anonymous

Hair was stuck in the impeller. Quite easy to fix. I appreciate the websites comments leading me to check for that. Robot is operational again and my wife is off my back.

Thanks to all

Jun 15, 2018
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Disappointed
by: Anonymous

30 sec and stops!

Jun 05, 2018
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ME TOO
by: Pat OB

Turns on, three lights...turns off.

Mar 17, 2018
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No affiliation with Dolphin Maytronics
by: ADMIN

This is an independent website. This site has no affiliation with any pool robot manufacturer. That is the reason for no response from them.

Feb 18, 2018
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Dolphin Company is MIA
by: Anonymous

Why doesn't the Dolphin company respond here. We google, this comes up first thing. The Dolphin company is MIA....

Jul 03, 2014
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Same thing
by: Anonymous

Mine was doing the same thing and removing the screw and taking the small amount of hair off made it work. Thanks f or the suggestion.

Sep 06, 2013
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Dolphin Diagnostics - I found a solution!
by: Kimmi

Mine was doing the same thing. Was really disappointed because they are so expensive. For a while turning off and then turning back on after a minute would work but would stop running after a minute or so. I first checked impeller and didn't see anything. I took the whole thing apart and did notice that the tread was off track a little so i fixed that. I was encouraged because I thought that must've been the problem. But low and behold it stopped after running for a minute AGAIN! So as a last resort I checked the impeller again. At first glance there was nothing in there. But i opened impeller area and removed the impeller and there was a tight circle of hair wound around the metal part that you slide the impeller onto before attaching with screw. I removed the hair and it ran the entire cycle! Seems like it's stopped a few times since I did that and there is usually some hair in the impeller compartment. If i take impeller out by removing screw and remove the hair it seems to work fine again!!! thought i would share. hope this helps someone else as it was a very easy fix.

Sep 11, 2012
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Dolphin pool cleaner
by: Steve

I have the same problem too. The dolphin runs fine for 2 minutes and then stops for no reason. Tried all that you can without pulling it apart.emailed manufacturer but no reply as yet.Will upload reply when I find out what they think.

Jul 02, 2012
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Nothing to lose
by: Anonymous

You have nothing to lose trying the bypass

Jul 01, 2012
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problem
by: Anonymous

I thought I read some where that it could possibly be the timer in the transformer unit, and that you might be able to by pass the timer????

Jul 01, 2012
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one of two things
by: Anonymous

If nothing is stuck in the tread behind the sideplate, then it's the electronic control board in the motor housing that can't be replaced separately

Jun 30, 2012
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Same problem
by: Anonymous

I have the same problem. Does anyone have any information on what the problem is> if So please respond

Thanks

Jun 09, 2012
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Dolphin won't run over 10 seconds but will restart after a few seconds
by: Anonymous

I have the same problem but mine only runs about 10 seconds then shuts off. When it starts to shut down a green light on the circuit board begins to flash. If I turn off the power the green light goes off in a couple of seconds. If I try to start it before the light goes out it won't run. Is the board bad or is it something else?

Jun 08, 2012
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Mine is doing the same thing
by: Anonymous

Have you found a solution to your pool cleaner? If so, how? Mine is doing the same thing.

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