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Having problems with my dolphin diagnostic explorer robotic pool

When i put the unit in the pool it shuts off within 30 seconds, what should i do?

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Your motor unit was covered for up to 3 year under warranty. Confirm your warranty status at and perhaps the repairs are still covered.

Posted on Jun 12, 2009


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Aug 08, 2015 | Dolphin Maytronics Diagnostic Robot...


Your Dolphin pool cleaner wont start up...

A common problem, especially with 'newer' Maytronics Dolphin brand pool cleaners is that you put the unit in the pool, or even try to turn it on after a cleaning cycle while it is still in the pool, and to that point it has worked fine. You turn the power supply on and nothing happens. You turn it off and back on and still nothing. You leave it, even over night, same thing. What do you do?

While I cannot tell you why it does this (we have a theory but can not confirm it) what usually works is to follow these steps...

1) Unplug everything. Unplug the power supply from the outlet and the Dolphin from the power supply.

2) Let the whole thing sit a couple of minutes (we want to allow any capacitors to discharge).

3) Be sure the Dolphin is out of the water and sitting upside-down on a level surface (Tracks pointing skyward).

4) Reconnect the Dolphin to the power supply and the power supply to the outlet.

5) With the Dolphin still out of the water, perform a self-test. Simply turn on the Dolphin. Within about 15 seconds it should begin to move. The tracks will spin in both directions with and without the impeller motor running at the same time. It is not unusual for the tracks to rotate at different speeds during this test. The test will last for 30 - 45 seconds or so. If it goes on indefinitely, turn it off and contact us for further direction.

6) Assuming the unit has now worked to this point, you should be able to put it back in the water and it will return to normal operation from this point on.

If it still won't run; it runs a few moments and quits the self-test; or runs continuously, contact us thru the Dolphin service form along the bottom of our home page at


on Dec 16, 2009 | Dolphin Maytronics Diagnostic Robot...

1 Answer

Turn unit on,light stays on for 5 seconds and shuts off,robot doesnt move

If the power supply switch is popping off after a couple of seconds the most likely cause is a failing rectifier. You may want to ship it to a service center to confirm that is the issue and that the switch, which is also the circuit breaker, and the PCB inside are OK. For help finding a service center contact Matronics directly at or 1-888-DOLPHIN.


Jul 23, 2011 | Dolphin Maytronics Diagnostic Robot...

1 Answer

The light goes on and nothing happens. no sound at all. it was working fine two days ago. thanks

Try a self test...flip the unit upside down on your deck and plug everything in a turn it on. Within 15 seconds it should start moving the tracks and the progress thru several track direction changes with and without the impeller motor turning on. After 30-45 seconds of these motions it will shut off and at that point I would put it back in the water and it should work.

If it will not perform the self test or will not operate after the self test it needs service.

For a list of service centers or further troubleshooting assistance please contact Maytronics directly at or 888-DOLPHIN.


May 19, 2011 | Dolphin Maytronics Diagnostic Robot...

2 Answers

Stops running after about 2 minutes

Question the manufacture about a new circuit board.

The Pool Tech

Jul 10, 2010 | Dolphin Maytronics Diagnostic Robot...

1 Answer

Robot not climbing walls, is vinyl pool too slippery?

Yes...a set of climbing rings will probably need to be installed. To have it done under 'warranty' for a newly purchased unit contact Maytronics directly or use our dolphin serice button found at

May 29, 2010 | Smart Pool Inc Dolphin Diagnostic...

1 Answer

The unit (6 years old) stops after a 30 sec. After rearming I can start again, and again, and again. Because the unit is no longer under guaranty, I disconnected the motor unit. By testing it (beside the...

Running it next to the pool is not very telling as it will shut itself off in that time anyway. Do you have access to another power supply to try with it? It is possible, though unlikely, it is the problem. It is more likely the motor pack and a new one is costly. If you would like parts or a quote on a motor replacement, use the dolphin contact portion of our website at

Sep 01, 2009 | Dolphin Maytronics Diagnostic Robot...

1 Answer

Stopped working

Try a self test...Flip the unit upside down on the ground, tracks 'up towards the sky' and trun it on. It should run for about 30 seconds during which it will cycle through various track and impeller motions.

If it completes the test, try it in the water again.

If not, contact us at for service arrangements or parts. You can also try Maytronics direct at

Jun 01, 2009 | Dolphin Maytronics Diagnostic Robot...

1 Answer

Transformer turns on but robot in water don't turn on no movemen t or water flow

I had same problem unplug unit wait for 30 seconds and try it again I had to do this 3 times this a.m. I am having problems with it only going 2 or 3 feet.

May 25, 2009 | Smartpool Dolphin Robo - Kleen Above...

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