MaytronicsUS Service Center

I am the Lead Service Technician at the Maytronics US Factory Certified Service Center in Norcross, GA. I am open to any Questions you may have about the service or repair of your Dolphin Pool Cleaner.


i have linked this email to my computer at work, this is not my work email as to keep my inbox free from general questions. I do work for MaytronicsUS during the day, if your questions are not asked in a reasonable amount of time please call 1-888-DOLPHIN (18883657446) with your questions, this is a small company, wait times might be longer than normal.

ATTN: Aquaquality Pools and Spas, Inc in Westbury, NY is now selling and servicing Dolphin Pool Cleaners. I believe they are a "best bet" for resolving your Maytronics repair issues or need for parts. 1-866-876-8643
Aquaquality Pools and Spas, Inc

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Mar 06, 2015
What do the buttons to the right of on mean? NEW
by: Anonymous

1. is it ok to leave the robot hooked to his blue tubing in the pool one or 2 days turned off?

2. the blue tube likes to crimp and get tangled, have you come out with a better one that does not do that?

3. My husband became disabled so I have to do the pool. I have been a good sport about this task and Herman (our Pool Man Robot) helps by doing a fantastic job! Wish we had this years ago!!! But are there any easier or new ways to clean the bag or new type bags, I struggle putting in back on.

4. I can't find my file right now and want you to tell me what the reset and other buttons to the righ of the on button mean and do. If you call me
I can go to it and you can explain over the phone
please, if not please send me the info
805 544-3977
Thank you, Donna and Paul Gallagher San Luis Obispo CA 93401

Feb 01, 2015
Owner's robot worked 1 minute at a time, fixed

This comment just came in from an owner in Israel.

"My Dolphin robot was working for one minute and then stopping. The robot was just fine. The problem was with the power supply. One the four wires connected to the PCB on right inside the power supply was burnt due to heavy current load. It was barely connected and this was the reason for the problem. Once I replaced it, the robot started working again."

Jan 25, 2015
by: kip

dolphin runs for 30 minutes and stops what could this be

Jan 25, 2015
Flipping over at waterline
by: Anonymous

Hi I have a dolphin x5 supreme. It goes up the wall then pushes itself out the pool a bit and pushes itself backwards It does this repeatedly then goes back to the pool floor and goes to the next wall just to do the same thing. How to I fix this problem?

Jan 08, 2015
Dolphin Orion
by: Anonymous

I put my Orion vaccum in the pool (upside down) and it sinks to bottom sometimes. Right now part of it is on botton and the other half of it is
floating in the air. ?? thank u

Dec 15, 2014

The purpose... this thread was to be maintained by a Maytronics technician.

This site is to help YOU repair your robot. This site is not affiliated with any pool robot manufacturer. The answer to anybody's question is most likely on the web site, but you must invest a little time and search.

Dec 11, 2014
no response
by: Peter

i am not too sure what the purpose of this site is if one does not get a response!!

Nov 25, 2014
Dolphin Diagnostic
by: Peter

Hi, I have a Dolphin Diagnostic. When I turn it on, it will run for about 1 second, moves about 6" and then stop. The fan at the top does not spin during this time. If I turn the electrical box off and then back on, it will just do the same thing again. Unit is just 2 years old.

Oct 20, 2014
Dolphin dx5
by: Anonymous

Just got new dolphin. it climbs the walls of my pool shelves but does not go over ledge to clean the top of shelf (or stairs). My previous pool cleaner did this when I put extra floats that came with the model in cleaner. Is the dolphin suppose to do this?

Sep 22, 2014
Broken part
by: Admin

You have a broken part, either wheel or bearing. Can't say what it is unless I see it.

Sep 22, 2014
Roller Problem
by: Anonymous

front roller comes off after cleaning for an hour or so. can't keep it on. Help! I think it is DX5 but book says robotic pool cleaner Basic 4-UNI

Sep 04, 2014
power supply blinks
by: Anonymousrj

when i try and turn on my dolphin dx4 the box(power supply) just blinks and doesnt come on completely, what is or can be the cause of this?

Sep 03, 2014

Instructions are on the site

Sep 03, 2014
Floating Cable
by: Anonymous

My son ran over the floating cable with a lawnmower. Where and how do I replace the 60 foot cable?

Sep 01, 2014
Dolphin Diagnostic
by: Bob

Starts in usual routine; fwd a couple feet then back a couple feet, then continues, but only goes a few feet, then goes the other way for a minute or so and stops.

Aug 30, 2014
wiring diagram
by: Admin

There is a photo of Dolphin plug wiring on this site

Aug 30, 2014
by: Zoe

The wires on the cord separated from the prongs, I know all I need to do is put the wires back in but I am not sure where each one go.

Aug 25, 2014
Dolphin goes 5 feet and stops
by: Anonymous

I have check the filter screens and the impeller. It will come on * go 5 feet and stop.

Aug 17, 2014
Dolphin Wave will not turn and only travels 15 ft back and forth
by: Frank

I bought a Dolphin Wave 65 last year and it worked flawlessly out of the box. This year it seems to stay in whatever part of the pool I put it in and only go back and forth for about 15 feet. It literally stays on the same line with no turns. The remote control turning controls won't turn it either. If I push right arrow it still goes straight.

It vacuums leaves and dirt just fine...I just have to constantly reposition it and this is not the reason I bought the unit.

I followed many instructions:
1. Moving the handle to opposite diagonal directions
2. SELF TEST by turning power off, turn dolphin upside down and turning it on. The treads move back and forth about 45 seconds and then it stops.
3. Filters are clean and everything seems to be in order physically. Again it is only a year old.

Thanks for your help.

Aug 09, 2014
Check for obstruction
by: Admin

Check for obstructions stuck in the drive track.

Aug 09, 2014
Dolphin Nautilus stopped working
by: Cindy

I have had the Dolphin Nautilus for 1 week. Today I put it in the pool, it started normally, tracked up the side of the pool and stopped.

I unplugged it, took it out of the pool - the filters were OK, plugged it in again, put it in the pool and turned it on. It processes water, but does not move.

What to do next?

Aug 07, 2014
Authorized Repair/Service in Massachusetts
by: Anonymous

I live in Georgetown, MA 01833 near the New Hampshire border. Is there an authorized service center in our area?

Aug 03, 2014
dolphin nautilus stops
by: Anonymous

My new (1 week) Dolphin stops periodically - especially at a wall. Nothing moves including the belts. I pull the cord and it sometimes restarts, sometimes it doesn't. I unplug, replug and it starts again. Don't want to damage this unit. Suggestions?

Aug 03, 2014
dolphin nautilus stops
by: Anonymous

My new (1 week) Dolphin stops periodically - especially at a wall. Nothing moves including the belts. I pull the cord and it sometimes restarts, sometimes it doesn't. I unplug, replug and it starts again. Don't want to damage this unit. Suggestions?

Jul 22, 2014
Dolphin Premier flips upside down.
by: Texas User

The fifth time I used my dolphin. It goes straight to the walls and tries to climb out of the pool. I reset it and it does the same thing. Most often the unit starts sucking in air, flips upside down and then float on the top of the pool eventually shutting down. I'm using the big refuse bag for the filter as I get leaves in the pool. What do I do?

Jul 21, 2014
cord twisting

Has been mentioned in several place on this site that you must re-coil the cable starting from the robot working out the twisting to the plug end.

Jul 21, 2014
power cord twists
by: Anonymous

The power cord on my dx3 twist up. Looks like the swivel is working,ie it will twist in my hand. Any suggestions? It gets so bad and in so may places, the dauphin can not pull it out under its own power.

Jul 20, 2014
Power supply
by: Darren actonAnonymous

Last year I purchased a dolphin cleaner, I used it about 6 times, this year I've used it twice, now the power supply will not switch on, I've noticed a lot of comments on here for the same reason are these products sub standard? Is there a flaw in the design? What can be done about it now? This product is not cheap, I checked on your troubleshooting page and it says I may need to get a new power supply, please help with this very bad situation

Jul 19, 2014
service quote sc1404122
by: Robert F. Reed

have you mailed my dolphin yet?- can't seem to track it.
serial number: 393666JB28
part number : 9999301

Jul 19, 2014
service auote sc1404122
by: Anonymous

have you mailed my dolphin yet?- can't seem to track it.
serial number: 393666JB28
part number : 9999301

Jul 17, 2014
Help it climbs!
by: Anonymous

My dx4 climbs constantly and doesn't clean floor. When on floor it pops a wheelie and turns left and climbs again! Help!!!

Jul 06, 2014
Dolphin not working
by: Carol

When I turn the cleaner on, all the lights come on for a few seconds and then go off. The unit is not working. Any suggestions?

Jun 25, 2014
by: Mike K

My Dolphin Diagnostic is not turning on How do yoiu remove fuse for testing?

Jun 20, 2014
Dolphin Premier 5M Robotic Pool Cleaner
by: Anonymous

Just received Dolphin Premier 5M Robotic Pool Cleaner and caddy today. Put caddy together and put cleaner in the pool. Turned it on and off it went! Only thing is one set of rubber tracks worked where the other set of rubber tracks was dead! I tried everything to correct it and even took plate off to check the rollers. It seems stiff and hard to rotate where the side that works seems more supple. Why do you think one side won't work? I'm so frustrated and disappointed.

Jun 14, 2014
Dolphin has no power
by: Anonymous

I used my dolphin 1x this year and after that no power? Could it be the motor?

Jun 11, 2014
Safe to swim
by: Anonymous

The robot voltage is too low to hurt you but the cord is a hazard

Jun 11, 2014
by: Budd

I have a GFI outlet near the pool (installed in 2014) . Is it safe to swim while my Dolphin DX5 is vacuuming the pool ?
I love that little robot. It does a fantastic job cleaning up and the filter is easy to clean.

Jun 11, 2014
power cord
by: Anonymous

Wave 100 cord end that goes to power pack. It has 4 pins 1,2,3,and a symbol and i have 3 wires red white black what wire goes to what pin

Jun 06, 2014
Dolphin Deluxe 4 Power switch
by: Kennedy

We have a deluxe 4 that we purchased through Leslies Pool Supply. It has the basic power supply. Despite only being three years old, the power switch on the power pack has worn to the point you are lucky if you can get it to turn on or off. Is it possible to replace the switch with a toggle switch? And if so, any recommendations? Besides that the only other problem we have with our Dolphin is cord tangling. I am considering purchasing a replacement DX4 cord and ignoring the third post in the amphemol plug, or is there a swivel cable designed specifically for the Deluxe 4?

Jun 04, 2014
Do i need a new dolphin pool cleaner
by: Anonymous

My dolphin diagnostic stop working, Each time I turn on the toggle switch it stays on for a few seconds then I see a spark as it shut off. Any suggestions.

Jun 02, 2014
Dolphin Premier.
by: Fran S.

We have just purchased and using the Dolphin Premier. It wants to stay in the deep end. And also, what are the two black long plastic pieces for? About 12" long and long slim oval in shape with round ends. Also, we didn't receive the piece that attaches the remote to the machine.

Jun 01, 2014
by: Anonymous

Is there a way to test a DOLPHIN DIAGNOSTIC Pool Cleaner if it is not in water??? Say if buying used and no water to see it run in.


Jun 01, 2014
Climbing Ring
by: Anonymous

You have to remove the side plate and drop the wheels

Jun 01, 2014
Climbing Rings
by: Sharon

How do you change the climbing rings on the Dolphin supreme M3? There is nothing in the instructions nor can I find anything on line on how to do it.

May 31, 2014
Dolphin issue
by: Anonymous

The dolphin runs for about 10 mins and then stops in the pool. I checked the ac and dc voltage in the transformer. I am getting 20.7 on the ac coming in to the board and 29.4 VDC going out. My understanding is it should be around 38 VDC. Any help will be appreciated.


May 30, 2014
by: Anonymous

I just bought the dolphin mp3 last year and went to use it this year and when I go to hit the power button it comes on turns blue then goes right off.

May 24, 2014
orange blinking light
by: Anonymous

What does the orange blinking light mean?

May 23, 2014
Replacement Dolphin Diagnostic PCB
by: Wayne

I have a Dolphin Diagnostic pool cleaner and the printed circuit board in the power supply is bad. The power supply is part # 9995655 and the PCB is 9995141, The PCB is no longer available however the PCB part #9995453 for the Dolphin Diagnostic Advantage is available. Are they interchangeable?

May 18, 2014
Dolphin Deluxe 4
by: Ken

Bought our Dolphin just 3 years ago, it has JUST run out of warranty, and it has JUST stopped working. The unit was working fine, then just stopped. I took the whole thing apart. Tested the power supply and it's outputting correctly. Tested the input at the motor, and it seems to be correct, but when I tested the circuit board in the motor, it seems power is coming to the board, but not going out to the motors. Is it possible to buy JUST the circuit board? If not, what's the next step. I do NOT want to have to buy a whole new motor. After only 3 years of use.

May 17, 2014
Power Cord
by: Anonymous

Hi Rebecca, try AquaQuality Pools at:

May 16, 2014
Power Cord
by: Rebecca

We recently had a house fire that ate through our Dolphin Power cord among other things. We are in need of a new power cord. Where can I get one?

May 06, 2014
Shallow End
by: Richard

My Dolphin does a very adequate job in the deep end of my pool but will not go into the shallow end. My pool is 20 x 40 and I boulght the largest model Matronics available. Any Ideas?
ADMIN REPLY: If you have handle floats, use them. Otherwise, experiment with different handle positions. A bag full with heavy debris will keep the machine in deep water. Check for debris jammed behind the sideplates too!

Apr 18, 2014
R43 resistor help
by: Anonymous

It would be help full if you could just get info for the R43 resistor on the timer/motor board...Buying a new cleaner for $800+ for a 50 cent resistor is ridicules.

Apr 01, 2014
SparePArts Number
by: Tom from Germany

I need a description from a part of the controll board. Perhaps you can help me. What is the correct description for S1? It seems like a photoelectric switch.
With best regards from Magdeburg

Mar 29, 2014
Circuit board
by: Allen

Due to a rigging of the power cord, my dolphin 4 was plugged directly into a wall outlet. I am guessing this fried the circuit board. Now, the powere supply is still delivering voltage to the motor, but I get no movement.
Can I get a replacement circuit board?

ADMIN REPLY: Sorry, but NO to the replacement ECB.

Mar 21, 2014
Possible damaged or corroded plug
by: Anonymous

Maybe the plug between cable and power supply is broken or corroded.

Mar 21, 2014
Delay start on dolphin diagnostic
by: Beverly

When I turn on the power supply, the power light comes on but the Dolphin cleaner does not start right away. I will leave the power on and sometimes the cleaner starts later on that day or sometimes it doesn't. Any clues?

Mar 03, 2014
by: Dennis

Worked fine on Sunday March 2, Today Monday March 3 it tries to start for a second then stops, Impeller on top that is. Green LED on Power Supply is solid green after flashing green for the beginning.

Jan 08, 2014
Full bag light
by: Anonymous

The full bag light indicator comes on and stays on even after cleaning

Oct 14, 2013
My m4 is one week old and it no longer moves
by: Anonymous

I ran the m4 for two hours last week. Now I put it in the pool and the water just churns the machine just stays in the same spot

Oct 09, 2013
Diagnostic test for Dolphin Triton
by: GHawk

Please give a discription on the out of water test that can be ran on this unit. How would you know if the tests were passed or failed.
The tracks move forward and backward but the fan does not turn at all? Is this bad?

Thanks for any help, GHawk

Sep 29, 2013
Dolphin 4000
by: Anonymous

Is this model Dolphin similar to a Diagnostic?

Sep 27, 2013
Dolphin 4000 replacement part needed
by: Anonymous

Looking for the green side panels of the dolphin 4000; these are the panels that the axle mounts to these panels and they are cracked and now not working.

I can't find the replacement parts anywhere??
I should replace both sides. Only the outer green panel is cracked not the pink panel.

Thank you

Aug 24, 2013
Power supply not comming on
by: Jeff

I have a power supply DYNAMIC DC for a Dolphin dx4 and the power supply won't come on when powered on.
The lights blinks for just a second then go off. it has a power button with blue lights around it. is there anything i can do to fix it?

Aug 08, 2013
Tangled cable
by: Love my dolphin

I had my dolphin for 4 years
No matter what I do the blue cable knots
Up any thing I can do

Jul 30, 2013
Dolphin back flip
by: Anonymous

After a number of years without ever having had this problem, my dolphin has started to "flip over " on its back. Any idea of how to correct this?

Jul 28, 2013
Pulley May be Broken
by: Anonymous

Check the pulley. Is the motor shaft turning but the pulley is not? If you can't see the shaft then remove the side plate and the pulley and turn on the robot.

Jul 27, 2013
RE: Track will not turn
by: Anonymous

Your dolphin has most likely a problem inside the motor unit; either the electronic circuit board has a error or the track motor(s) are defectiv; corroded, or cole connections. Without opening the motor or with a special service unit it is not possible to find out. Regards vette

Jul 26, 2013
Track will not turn
by: Jimm Hinson

I have a Dolphin Diagnostic Advantage. The impeller is pushing water up out of the top but the tracks will not turn. I have looked to see if something is stuck in the track but I cannot find a problem.
Anyone have any suggestions?

Jul 26, 2013
What type of remote control for a Dynamic 2002?
by: Vette

I got my hand on a used remote control (RC91752, black and. Green T-Type, says Maytronics 2002, Ver 65, ID. No. 03, after switch on). I tried to use it on my Dynamics 2002 (which has a 6H Dynamic DC motor unit installed). I can't get the Dolphin controlled trough the Joystick, it looks like the two devices aren't communicating to each other.
Questions 1: Are these two devices compatible, meaning should the work together?
Question 2: Do I have to configure the 2 devices, that they are able to communicate to together? (Matching ID's or somethng?)
Question 3: How can I do this? What are the steps to achive this?
Any answers more that welcome.
Thanks vette

Jul 25, 2013
back to back
by: Anonymous

I run back to back cycles all the time with my Turbo and Bravo without problem.

Jul 24, 2013
dolphin pro
by: Anonymous

i have an older model dolphin cleaner .i have a 2 hr cycle. can i start another cycle right after the first one in finished?

Jul 17, 2013
Dolphin Diagnostics Swivel Cable Issue
by: wh

I decided to replace both ends with these:

Jul 17, 2013
Dolphin Diagnostics Swivel Cable Issue
by: wh diagram%20dolphin%20heavy%20duty.jpg
part 24 diagram%20dolphin%20heavy%20duty.jpg

Correction, The distance between the inner center and outermost ring is 3/8 inch.
I tried to prop it up with some glue. I was thinking of cutting it between the smooth part & the threads, about 3/4 inch down the shaft.

This caused the pool cleaner to lose all power, as you can see, the outer connection is worn down.

Jul 17, 2013
Dolphin Diagnostics Swivel Cable Issue
by: Anonymous

I too found the problem with my. The Swivel Cable right next to the unit is ground down and lost its springiness. I was thinking of cutting it apart. I can pull it out, but think it will retreat as soon as I put it together.
What is the name of it?
Here is a picture of it:
The distance between the inside ring and outer one is .9 cm or 3/8 inch.

Jul 17, 2013
pool green
by: Anonymous

get some algeacide (for all types green, yellow and black) and put it in.
This will kill the growth.

Jul 16, 2013
Help, my pool is turning green!
by: JT

I purchased my 2nd dolphin cleaner last year. The first one lasted 10 years with no problems. The new one stopped working last week. I called Maytronics and was directed to a two page troubleshooting guide(worthless). When I turn the cleaner on the fan will run for 3 seconds, off for 3 seconds. After 3or 4 times the brushes will turn about 6 inches and that's it. Any suggestions? Is there an authorized repair company in the Maryland area? I took it to Leslie's Pool's where I purchased it but they don't service this cleaner.


Jul 14, 2013
dolphin advantage
by: Anonymous

My dolphin advantage runs a few seconds and quits what is the problem?

Jul 12, 2013
Coupler, cloth bag, Plug answer
by: Anonymous

The plug with the prongs is called an Amphenol Plug and Amphenol socket.

The cloth bag is a standard size. Aquabot bags will fit Dolphin, tiger shark, Blue Diamond Etc.
Nothing fits Smartpool except smartpool

The "coupler" is a Retrofit for Cable Connector -3 pin

Jul 12, 2013
by: Anonymous

What is the name of this part
part 18

Optimus connector??
Kwik Repair connector??

Jul 12, 2013
cloth bag
by: Anonymous

Does anyone know thae size of the cloth bag which fits over this and holds the debris?

Jul 12, 2013
by: Anonymous

What is the name of the 4 prong 1/2 inch in diameter cylinderical coupler?
Where can I get one that is an exact replacement for the one that is used here?
I see one at

Rugged bayonet lock electrical circular connector

Jul 12, 2013
Loose tracks and wiring scheme.
by: Anonymous

To tighten slack replace the treads.

To check the wiring scheme, remove the socket from the power supply and see what wire goes where.
Many sockets are held i place with 2 screws and pull out. Make certain the unit is not plugged in.

Jul 11, 2013
by: Anonymous

My wires came loose on the attachment cord. I have a red, black, and´╗┐ white lead. Which numeric (1,2,3,4) value do these connect to?

Jul 11, 2013
loose track
by: Anonymous

How do you tighten or relace the tracks.

Jul 11, 2013
Dolphin Service
by: Spear Corporation

Dolphin Service
by: Spear Corporation

Hello, I work in Dolphin Service for a company distributor of maytronics commercial dolphins, the company is called spear corporation and if anyone has questions about a commercial dolphin, feel free to email me questions or if you wish to get a quote on servicing the vac, I can easily get you one for free. We are based out of Roachdale Indiana and we service maytronics specifically and work with them to distribute their dolphins. their customer service is not worth the time, our company has serviced their dolphins for 10 years and know the ins and outs

Jun 17, 2013
dolphin does not turn
by: Anonymous

My dolphin diagnostic goes only back and forth and covers the same track over and over again.
Whats wrong?

Jun 12, 2013
Warranty done correctly?
by: GaryG

My deluxe 4 was serviced under warranty by our dealer by replacing motor and power pack. The unit is now making a loud whin/whistle sound. The dealer say this is OK. What are your thoughts?

Jun 05, 2013
Replace your belts
by: Anonymous

Replace your belts if they are falling off. They stretch over time.

Jun 05, 2013
Belt Problems
by: MikeDave

Our Diagnostic Dolphin automated pool cleaner is having problems with the belt drive. Repeatedly, the belt falls off the track and then we find small pieces of the yellow track fragments due to the grinding and continual motion of the gear. We are unsure what to do to fix this problem. Any help is appreciated.

May 28, 2013
dolphin won't start
by: Anonymous

My dolphin wont start. The light goes on but nothing else. Help....

May 28, 2013
Dolphins have many ball bearings

The Maytronics Rep was overwhelmed.
YES, Dolphins have ball bearings in the track rollers, pulley or wheel bearings that can be replaced. The side plates must be removed to check. Call Aqua Quality Pools and Spas for the parts or go to the website

May 26, 2013
Rip off
by: John Connecticut

my dolphin runs about 30 seconds. they send you to this website to post questions, never an answer. i called them the customer service person was going to send me and email with service location, it never came. RIPP OFF RIPP OFF!!!!!

May 26, 2013
Question on drive .motor
by: Phil

Does the dolphin have bearings of any type that may fall out and can it be fixed? The reason for my question is this, a friend of mine found bearings in the bottom of her pool,

Ty, Phil

May 25, 2013
by: Anonymous

will not run, no matter WHAT I check or try.

May 20, 2013
by: Anonymous

Maytronics rips off consumers buy not providing all parts specifically the circuit boards to its dealers.

May 18, 2013
3 seconds and off
by: Anonymous

I have blown out the graphite in circuit board area, but my DX3 will still only run for 3 seconds then nothing. What next? Dan

May 18, 2013
by: Mark

Anyone have a idea on this issue- When I plug the dolpin power supply unit into a outdoor ground fult outlet , the outlet trips and no power to the dolphonpower supply. When I take the power supply to a non ground faulted outlet the Pwr Supply lights up but no movement on the dolphon itself.. Power supply mdl Diagnostic DC pn 9995670

Dolphin unit- advantage..

May 17, 2013
Starts and then stops
by: John Connecticut

When I turn on my Dolphin Diagnostic 2001it moves about 1 ft, then back about 1 ft, then back about 4 ft and turns off. Can anyone please help me?

May 15, 2013
Bag stuck in track
by: Anonymous

I found part of the bag ripped off an stuck in the tracks, stopping the unit. Got the rag out but unit still won't move. I have checked voltage to drive motor and I have the correct amount. What now ? I can find zero pictures showing how to get to the pc board or drive mech.

May 05, 2013
Dolphin diagnostic ECB
by: Grant Cooley

I have a 2004 maytronics diagnostic which I purchased when my 2001 died. My 2004 quit working so I started trouble shooting both units. Power supplies on both are good, power cable on both are good, impeller motors on both are good, drive motors on both are good. When I opened the sealed unit on the 2004 unit I found R15 burned. If I jumper around it the drive motor will run, the impeller motor will run intermittent, the LED is blinking. The resistor appears to be a 6.51 ohm. Can I buys resistor or just send in the ECB?
On the older unit there is one large resistor which appears burnt, not sure of the value. Any way to get the ECB repaired or get a set of schematics?
After spending over $2,000 for the two of these, I really do not want to spend another thousand dollars when the total cost of repair parts would be less than five dollars

May 05, 2013
automatic feature not working
by: Anonymous

We followed the instructions to have the robot clean automatically for the week but it won't work. It starts right up cleaning and shuts off automatically but it doesn't do it again the following day. Can you help us? Thanks!Laurie

May 01, 2013
See my earlier comment
by: Anonymous

If your Dolphin moves a little bit and the impeller spins, but then stops after about 15 seconds it could be the graphite powder used on the motor getting onto the control circuit board.

Open up the unit and vacuum the circuit board to remove the graphite from the board. I had the same problem as you reported and when I did this the rover works and I have not had an issue since.

May 01, 2013
What is the problem
by: Anonymous

My Dolphin Diagnostic makes a little move forward then a little move back and stops and the impeller is not spinning. What is the problem?

Apr 03, 2013
Need help
by: George Bradford

I've had my Dolphen for several years. It has always performed up to standard. There have been a few really minor issues that were quickly resolved by my son or me.

The other day it would not start. After inspecting the power cord, I discovered that the power cable had pulled away from the the cart. This is the end that does not go in the water, but screws into the cart.

There is a black receptical to which the cord is or should be attached. This receptical screws on to another terminal that is affixed to the cart, thus providing power to the Dolphen when switched on.

The electrical wires have come a loose and to reattach them seems a simple task. However, there is no code or diagram indicating to which of the little posts the Red, Black, and White wires should be be connected.

Can you provide me a diagram or explanation regarding the correct connection?

Greatly appreciate whatever help you can provide.

Mar 11, 2013
wont run
by: Scott

My Dolphin Comander runs 5-7 minutes then shuts off. Not sure what to do

Feb 05, 2013
by: Anonymous

We have a Dolphin 3002 pro, it has taken to starting in the normal way but one side only starts slowly in one direction then stops. The other side works fine until the safety kicks in and the whole machine stops. I have taken off the side plate to check for debris, there is none. I found the bearings in one guide wheel had come apart so I replaced this from my stock. I then put everything back together to test but this has not cured the problem.

Any ideas?

Dec 02, 2012
Dolphin design flaw
by: Justindm1

I had an issue with the impeller spinning for 10 seconds and then never turning again until the unit was power cycled.

I think I have worked out the issue that caused this,which is that the carbon powder that they use on the motor gets out of the motor and onto the circuit board after a year or so. Every time you take the rover out and invert it to clean the bag you are shaking the powder around inside the unit.

When I opened the watertight box inside the cleaner I noticed a lot of the carbon powder on the circuit board. As carbon is a conductor I wondered if it was shorting the sensor circuit and so blew hard on the circuit board. When I power cycled the cleaner this time it started working normally.

If you have issues with your pool cleaner and have tried everything else then open up the watertight box and use a vacuum cleaner to such up any carbon on the circuit board and see if this fixes the problem.

Dolphin suggestion when the cleaner is being assembled when the wires to the circuit board have been attached a quick spray of polyurethane on the circuit board would stop this issue.

Sep 26, 2012
by: Warren Kiyabu

Please post your response to the individual questions online. I know you are answering the original person who asked it, but what about the new people with the exact same problem as a previous post. Same issue as this post.

I have a Dolphin Diagnostics Cleaner that has the Swivel Cable. Inside the swivel part of the cable there are three spring loaded pins that make the connection and allow the cable to swivel. The center pin on mine has lost its spring tension and every couple of weeks the unit stops moving and I have to open the swivel assembly and pull the pin out a little so that it makes a good connection. Is there somewhere that I can get replacement pins for the cable swivel assembly. It appears that they are easily replaceable if they were available.

Sep 26, 2012
by: Warren Kiyabu

Please post your response to the individual questions online. I know you are answering the original person who asked it, but what about the new people with the exact same problem as a previous post.

Sep 03, 2012
Inclination sensor
by: Ricardo

Hi, I have a Dolphin easykleen, and I have problems with the inclination sensor it's broken (due the rust) it's a plastic square box with an small ball inside and it has an infrared emisor and photoresistor to detect the inclination.
Where can I find the characterictics of this ir led and photoresistor or replace the complete sensor?
Please it's very important because the robot only have this problem to start to work!

Thanks on advance

Sep 03, 2012
Cable Plug into Power Supply Burnt Out
by: Anonymous

Hi, Thanks for your help. One of the male pins on the plug attached to the long cable has burnt out and broke off in the female plug on the power supply. It is the pin that connects to the white wire. I realize that only two of the pins are used and I've swapped the bad pins for the good pins. This doesn't seem possible on the male plug. Can you make any suggestions. Awesome product by the way. Hey, while we're at it, is there a way to make my old cable "tangle-proof" like the newer models?

Thanks again.

Aug 26, 2012
Please help me find parts
by: Brian

Looking to replace the two soft rubber blue pads that have 7 little pegs on one side and four rectangle molds sticking out on the other side. They fit on the pink plastic bracket around the bottom insides like a brush guard or something. They are a little under 8.5 inches long and 2 inches wide. Both fell off and will not stay in anymore. Email me at

Aug 22, 2012
by: Anonymous

one thing to note, if the unit stop running and the power supply is on, usually the motor is the culprit, if the power supply is off then the power supply is usually bad. if both shut off then there is a short somewhere in the system.

Aug 18, 2012
Dolphin explorer
by: Anonymous

I bought new power supply for dolphin explorer and it is doing same as the one I thought was broken. It will run as if fine for about 5-10 minutes then stop. I thought it was the power supply but apparently not. What might I try next?

Aug 07, 2012
stopped working
by: Maggie

I have just purchased the new power supply for the Dolphin diagnostic as my previous one stopped working. the new model has 4 small blue lights in the 4 corners of the power switch. The bottom right blue light is no longer lit when the unit is powered on plus the dolphin diagnostic is no longer working at all although it was working with the new power supply for about a month. Please let me know what to do and what may be wrong now. Thanks,

Aug 02, 2012
broken pool cleaner
by: sjohnson

I have a dolphin diognostic pool cleaner that wont work. My wiring has come loose from the end of the plug and i dont feel good about trying to repair it. Can you tell me where there is a service center to service this machine for me. It hasn"t worked in two weeks. thank you

Jul 16, 2012
My Dolphin Is Sick
by: Randy z

Hi, I have a Dolphin Diagnostic. it has been working fine but recently stopped working. When I power it up it moves a little bit reverses then stops. I have been told that it may be the board inside the robot. can you tell me if this is the problem? Or where can I bring it in my area for repair? and is this an expensive repair, as the unit was costly to begin with, I don't want to be shocked by a large repair bill.
i am in the 07827 New Jersey area.
Thank You
Randy Z

Jul 03, 2012
Location of fuse on dolphin
by: Anonymous

Where is the fuse located on the dolphin robot unit? Thanks

Jul 01, 2012
by: Anonymous

Most credit card will double the original manufacturer's warranty. If this applies to you, be sure to tell the credit card company that the machine broke outside the original warranty period

Jun 30, 2012
Need some help
by: Anonymous

The comments made by Gordon on May 8,2012, our the same problems that I am having with my Dolphin pool Cleaner. It starts up, runs for a minute and then slows down and stops. If I turn it back on it does the same thing again.Can anyone help

Jun 28, 2012
New plug repair
by: Anonymous

How do i connect wire to amphernol plug?

Jun 24, 2012
need circut board
by: Claude

I would like to know where I can purchase a circut board for the motor (not power supply unit)

Jun 23, 2012
Dolphin Naut
by: Anonymous

i just purchased a dolphin naut
my question is, it came with 4 screen filters, do i need a filter bag also, and is it better

Jun 10, 2012
Dolphin Deluxe 4
by: Anonymous

With the new module on the Dolphin Deluxe 4, with its programming for up to a week at a time--Does this mean u can leave the unit outside for long periods of time? If not, what its the point of the programmable module?

May 29, 2012
Nobody Knows
by: Anonymous

Is recommended to remove the robot from the water when idle. Nobody knows if you remove the robot from the pool or not unless you say so.

May 29, 2012
time limit in water?
by: Anonymous

Is there any maximum amount of time that a Dolphin pool cleaner can be left in a pool? Do i need to remove it every so many hours to let it dry out? Someone told me that the warranty would not be any good if I left the dolphin in the pool for too many hours, but I can't find any information about this. Thank you for your advice.

May 08, 2012
My dolphin has stopped working
by: Gordon

I have a Dolphin Dynamic. I don't remember precisely when I bought it but I would estimate it to be about 3-4 years old. In the past year it has started to operate poorly. Currently, when I turn it on at the caddy, it goes through its normal start up routine (pivoting then setting off in a straight line) and runs for about 30 seconds, making perhaps two passes. Then it slows down, the impeller stops turning, it keeps crawling along at a slower and slower speed and then stops. If I turn it off for a minute then turn it back on, it does the same thing -- runs for less than a minute then stops. I have cleaned the bag and washed it in the washing machine as recommended by Dolphin USA Customer Service. I have checked the tracks and interior for any blockages or foreign objects. Everything looks clean. What could the problem be? I only use this machine for a few months of the year, and not very often at that. I have a weekly pool service that vacuums and cleans my pool. The unit is stored in its caddy under a roofed pool cabana and we live in California where it is not subjected to freezing winter weather. Total hours of use on the system aren't that many. Surely your product should last longer than this? Can you please help me with this?

Apr 26, 2012
Dolphin impeller not moving
by: whitesbj

I have a 4 year old Dolphin Diagnostic, starting last year it would start to move and the impeller would start sucking water, but after a few minutes it would stop sucking water and try to climb the side wall over and over for hours but could not because there was no suction from the impeller. It is now basically useless.

Apr 25, 2012
Power Supply won't come on
by: Anonymous

I have a Dolphin 4 Deluxe cleaner. It is last years model and has been in use for approx. 3 mos. The power supply unit will not turn on. Any suggestions?

Apr 18, 2012
Pin configuration
by: Anonymous

What is your pin configuration on the conector that goes into the transformer? IE black wire goes to 1,2,or 3 and white wire goes to 1,2,or 3 on the male conector.

Apr 12, 2012
New Treads
by: Anonymous

I have just changed the treads on my Dolphin but they seem too wide and now it will not move. Has Maytronics changed the spec?

Apr 07, 2012
NO Answer
by: Bob

Why are we all taking the time to write our problems here if NO one is going to answer them.I put one in on March 13th and NO one has answered,

Apr 07, 2012

Hi My Dolphin pool robot does a good job in cleaning the pool and I have had it for 3 years now but lately it has decided to only clean about half the pool, on the deep end. I can not see anything that is stuck in the cleaner. What would cause my robot to loose it's way?

Signed, A wayward robot owner.

Apr 07, 2012
Impeller not clogged but not turning
by: Anonymous

My Dolphin Diagnostic Advantage would make a little move forwards then a little move back and stop. I checked the drive train and it was basically clean. Now it runs longer 6-8 feet and stops. I noticed the impeller is not spinning. I don't know if it was originally, but isn't now and isn't clogged.

Is this a repairable problem?

Apr 02, 2012
No power?
by: Dawn M.

i have a dolphin Pro that suddenly quit workimg. the light on the power supply will not come on and i tried changing the fuse, still nothing. Any idea where i can purchase a new power supply?


Apr 02, 2012
by: Anonymous

The older power supplies, may or may not have a fuse housing depending on what circuit card is inside the unit. Most of them have a fuse, which is accessible on the outside rear housing of the power supply.

Apr 02, 2012
sorry about that
by: Anonymous

ok since i am unable to regularly check the alternate email i have posted, please send all questions to INFO@MAYTRONICSUS.COM
this is the general information email which all employees at maytronicsus have access to, including me, the season for pools is about to start and wait times may be longer than usual.

for technical questions you may send emails to

Mar 24, 2012
Finding fuse in power supply
by: Heidi

Hi, I live in Minnesota, and there are no service centers nearby, so we are trying to solve this ourselves. We are trying to replace the fuse in the power supply. We have the unit apart, but cannot find the fuse. Could you tell us where it is located?
Thank You

Mar 13, 2012
by: Bob

I have a 3h Diagnostic DC drive unit that will go into what I think is a start up test and runs for about a min. When I turn it on I hear the relay click then the fan runs for about 2 sec then the fan and the drive moter turns on going one way then the other.This goes on for about a minute then I see that the drive motor slowes down a bit on its turning but turns for about 30 sec and then stops. I have 38 volts on the main wires going to the control board.The motores are running about 25 volts on them. When the drive motorstates out on it run the voltage dropes to 11.5 volts.where do you think the voltage drop is comming from. What do you think i should do?

Feb 24, 2012
Dolphin Diagnostics Swivel Cable Issue
by: Anonymous

I have a Dolphin Diagnostics Cleaner that has the Swivel Cable. Inside the swivel part of the cable there are three spring loaded pins that make the connection and allow the cable to swivel. The center pin on mine has lost its spring tension and every couple of weeks the unit stops moving and I have to open the swivel assembly and pull the pin out a little so that it makes a good connection. Is there somewhere that I can get replacement pins for the cable swivel assembly. It appears that they are easily replaceable if they were available.
Thanks for your help,

Feb 01, 2012
Thank You
by: Curt

Thank you for taking time to answer questions users may have about the robots!

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