How To Take Care of Your Dolphin Robotic Pool Cleaner | Common Problems & How to Prevent Them

How To Take Care of Your Dolphin Robotic Pool Cleaner | Common Problems & How to Prevent Them
In this video I break down the most important tips I have gathered over my time as a repair tech of robotic pool cleaners. We will break down to to take care of your best dolphin pool cleaner and what to avoid doing in order for you to get the longest life possible for your Dolphin Pool vacuum. Actions such as leaving it in the pool or taking it out, How to avoid a tangled cord, the topic of spring cleaning, and many more.
Also check this video breaking down each model of dolphin that can be used in an average sized in ground pool: • Best Dolphin Pool Clea...
Be sure to check out the other videos like the Dolphin M400 vs the Dolphin Premier HERE: • Dolphin Premier VS Dol...
The Dolphin M400 vs the Dolphin Sigma HERE: • Dolphin Sigma VS Dolph...
And The Dolphin Nautilus CC Plus vs the Dolphin S200 HERE: • Dolphin Nautilus CC Pl...

[@christrites4251]

Great video. I bought a house with a pool and Dolphin robotic vacuum and had no idea about checking the impeller, Thx!

[@mtcook111]

I have a Dolphin Oasis Z5 that is 10 yrs old and I have taken it out after each cycle. Never had any plastic degradation issue. Plus, why would I want to keep it in the pool when not in use?? My biggest issue has been the vacuum getting stuck on the two main drain covers in the deep end. Drives me crazy!! (I turn the pump off when running the vacuum). Great video!

[@sgoen5]

One of the rubber tracks came off the edge so we took apart our Dolphin Nautilus CC plus and were able to pop it back in place. I cleaned out the impeller and looked over both sides of tracks and didn't see any debris. We put everything back together and then after placing in the pool to test it, it would only move forward a few inches to climb up the wall then fall down again and did this repeatedly for 5 minutes. I then took it out of the pool again to run the self test where I placed the Dolphin upside down and powered it on. I heard the motor from the impeller run, then the tracks moved freely to go forward, backward, then forward again. I tried taking out the cartridges and put it in the pool again then power it on and see it is not moving at all. I take it out of the pool again and put the cartridges back in and run the self-test again this time with Dolphin upright on the concrete and nothing happens, no movement. I wiggle the power cord a little bit then the impeller starts and then it goes through the self test to move forward and backward again. Do you think I have an old cord that needs to get replaced or something else is the issue? My Dolphin is about 6 years old and has been running well pretty much the whole time until now.

[@papsco03]

Love it man, well spoken and great advice. My power supply/caddy on my M600 is always undercover while the Dolphin is doing its job. Always stored away from the sun/elements when not in use. Keep up the great work, an Australian fan……

[@thedolphindoctor]

thank you! Glad to hear it

[@bacakszvelet1227]

I just purchased Nautilus Plus. I wanted to know whether I should leave it in the pool or take it out every time. The video was beneficial. Thank you.

[@rhuggard2011]

If you can’t leave it in the pool, Maytronics should remove the timer feature that encourages leaving it in the pool.

[@thedolphindoctor]

Its not so much that as the issue, a lot of people come from a suction side cleaner which was always set to run whenever the pump was running (on a schedule) and that it always has been a feature since a long time ago across all brands. Its fine if you do it and its obviously capable of doing so but its a double edged sword as mentioned. some people are fine with replacing it more often but if you want to get the most life then I would take it out. The scheduling is good for when you will not be around like vacation or so on. Or a middle ground would be use the schedule 5 days a week but plan on 2 days of being out while you shock the pool and let that chlorine level drop. Its not so much leaving it in being the issue its what its in chemically...

[@thedolphindoctor]

I think they should put more obvious warnings on what high level chlorine will do over time. I find that most people will do all their maintenance work on 1 day. they shock the pool and then throw the cleaner in.... Thats the worst thing you can do. Its in the instruction about the being in below 4ppm recommended range in terms of chlorine but its overlooked often. I think the feature should always be offered because its often sought after but people just dont know the consequences. If dolphin axed the feature it would put them at a disadvantage in terms of other brands. although better it will be viewed as a negative.

[@clewis128]

Thanks!

[@thedolphindoctor]

thank you! anytime!

[@alecsutherland]

Great video, thanks. I just bought a m550, the first time in the pool today and it did well. The fans stopped working at the end (so i had trouble retrieving the bot from the pool), I'll try again tomorrow after checking the impeller.

[@thedolphindoctor]

just gently pull on the cord if needed. where are you from as M550 isn't supposed to be available in US yet?

[@alecsutherland]

​@@thedolphindoctorI'm in the UK. Not known for in ground outdoor pools for obvious reasons! 🥶 . I checked impeller (clear) so I'll try again at the weekend. When I first put the dolphin in the fans worked very well so hoping it's just teething problems.

[@maverickthemutt]

Nice video man, nicely detailed and informational. My nautulis has recently started the 10 minutes and quit thing. Unfortunately it's not the impeller or dirty filters. I'm thinking it's the cable because sometimes it will just continue moving again after sitting there for 30 minutes. Super weird

[@thedolphindoctor]

could be the motor then. you can try unscrewing the anti swivel on the cable from the fatter end. If its the cable thats where the issue will be. If not that its probably the motor.

[@deataol]

Currently shopping for a new dolphin, current Neutilus CC lasted 4 years. It was in the pool nonstop year around as I leave the pool open year round. (South Texas). Only took it out when we were swimming. Cord started to peel and it’s faded. Only problem I ever had before it finally gave out was the rubber tracks would come off and the cord would tangle sometime. Other than that I was very pleased. Based on the video, I will not be leaving the new one in the pool nonstop. Also had no idea about the impeller fan. 😭 Thanks for an informative video.

[@thedolphindoctor]

of course. Glad it helped! Good luck with the new one!

[@Cocora22]

Thanks for thge info. I put the cleaner in the pool with the fabric bag to collect the big stuff. Took out twice because it said it was full. Second one was not real full at all. This morning put the cleaner bacl in with mesh filters. Did one cycle and it said it was full, but it really wasn't. Anyway I cleaned them out and reinserted the cleaner. Again after an hour it saiid it was full. I took it out and there was hardly anything in there. What troubleshooting can I do. Cleaner was purchased last Summer, so really only worked 4 months last Summer. Just opening pool now and it's not green or full of algea . Would appreciate your thoughts.

[@thedolphindoctor]

what model do you have?

[@FahadSyed]

Thank you so much for your videos! I do have an issue still. My Pentair Prowler/Dolphin Warrior Si moves forward as you hear and see the left (big wheel part) track jump a bit, then it moves backwards stops as it starts doing the same again and finally moves forward a couple inches stops and light turns off. My impeller has nothing stuck in it. I also replaced the brush assembly for the large wheel part and still the same. Any ideas?

[@thedolphindoctor]

its most likely the servo within the motor compartment. Usually that isnt a replaceable part on its own and would just require a whole new motor box. it is a fairly easy replacement but the cost of the motor box can be between $400- $500. The moving forward both ways then stops symptom is usually impeller clog or this.

[@TheBryanF]

Is there an improvement with commercial Dolphins compared to the residential models; I.e. the Wave 60? What are the differences? Thank you for your help! Your videos have really helped me!

[@thedolphindoctor]

The commercial units have brushless motors which are rated to last longer. They cost a lot more and dont have wifi. Wave 60 is the most afforable commercia unit. Definitley worth it but people often think its "over priced" since its less features but those motors are more expensive by a decent amount which brings it to that price point

[@jarheadcharlie2315]

I'm just changing over to a CC Pro as soon as it gets delivered, (replacing a 7 year old Pentair Kreepy Krauly) it will be my first electric cleaner. In your experience, would wiping the cable down with some silicone every couple of weeks prolong its life?

[@thedolphindoctor]

I've never tried that idea. Could possibly help. I can't strain enough how important keeping out of high chlorine is and keeping it rolled up neat like how it came in box will also greatly prevent tangling.

[@christopherbarth6501]

Hello, great video, thank you. Our M400 that we purchased from Pelican is working great, we are very happy that we purchased it! I just e-mailed Pelican this message, but I thought it would be good to ask you as well (you might be the same person answering :) ) The robot is in Guatemala where we live 8-9 months a year. I'm in the states right now, and I would like to purchase some spare parts that are recommended for preventative maintenance and typical wear and/or failure parts. Can you list all of the parts that you recommend? Thank you

[@BelleHosking]

Hi, loved the video. We have had our dolphin explode in the water with a bang! Did keep it in the pool all time, but it was only 4mths old. Can’t find any other story of this happening??

[@thedolphindoctor]

that's insane! I have never heard of this happening. Was it running? did you just power it on when it happened? did you use extension cords? did you pull the unit out from the cord roughly? The only way I can see this happening is if you managed to pull the cord out of the motor to cause a shock/ bang noise. which is impossible to do without some sort of outside cause

[@stevenohnsat7535]

Left my M400 in the pool perpetually. Through two pools both salt and bleach chlorinated. Lasted 6 years before the cord wasted away right above the motor housing and let water into the housing. New motor and cable was 600 smackies. Just gonna replace the cable every 4 years.

[@thedolphindoctor]

yup the chlorine really is what causes 90% of the issues. Im suprised it lasted 6 years! from what I see here in the North east usually they only last 2-3 years if left in constantly.

[@zaneparker3098]

Thanks for putting this video together. Good advice for sure. My Nautilus CC had a full tear down and cleaning today. (Needed to clean out the propeller) She runs about an hour but then stops. Sometimes shorter if I restart after she initially stops. She used to run for 3 at least! Any ideas on what it could be?

[@thedolphindoctor]

which Nautilus is it? the cc plus has a standard 2 hour cycle time. none of the current models have a 3 hour cycle time

[@zaneparker3098]

@@thedolphindoctor Dolphin Nautilus CC Plus. If it’s standard 2 hours it’s only running for about half its max time.

[@thedolphindoctor]

@@zaneparker3098 odd it's so consistent at 1 hour. Filters are not insanely dirty, right? Are you certain it's only 1 hour? timed it and everything? I get people who say that and we run it here and they run the full 2 hours. I would contact wherever you bought it from or dolphin directly and try to get it warrantied if it's under 2.5 years old

[@zaneparker3098]

​@@thedolphindoctor let me check it again to be sure. I bought it in May of 2021 so it's getting close to the end of the warranty period. Good to know the cut-off is 2.5. Thanks for your help.

[@zaneparker3098]

Ugh!!! Started her up and she spun the propellers really well. Nice and strong. But then just didn't move anywhere. Then the props stopped or slowed down.

[@vg8687]

I have a dolphin escape and the power light doesn’t come on. I was able to deduce the Amphenol Plug is not working. However, there are no videos on how to remove/replace this. Do you have any other suggestions on troubleshooting and or replacing this plug? Thank you!

[@thedolphindoctor]

What light? The robot or the power supply light?

[@christopheranthony7644]

Thank you for your informative videos....! I have a Brand New Nautilus CC. Turned it on, ONE push of the button...... It is supposed to run for 3 hours, but only runs for 2........ Any help would be greatly appreciated. Thank you.

[@thedolphindoctor]

2 hours is what it’s supposed to do. Any other info is wrong. Sometimes people’s listings are wrong. Go to dolphins official site and make sure it is the ‘CC’ and not just nautilus.

[@christopheranthony7644]

@@thedolphindoctor Yes sir. The manual says 3 hours. But it’s kinda sketchy. If you say it’s supposed to be 2, I’ll live with it 👍🏻. If you find different, please let me know. And thank you so much for your time.

[@thedolphindoctor]

@@christopheranthony7644 strange. I just checked dolphins listing and it confirmed 2. I would bring that to their attention. Their manuals tend to be generic in some aspects but that should of course be accurate.

[@christopheranthony7644]

@@thedolphindoctor Oh man. Thank you so so much. Strong work 👍🏻

[@nabchanabcha]

Hi Doctor. I have an M600, running for approx 3 years with no problem. Now , on start it shows a red led (the robot, not the power supply), any idea ? Thanks for your videos..

[@thedolphindoctor]

have you checked the impeller? Unfortunately the red light could mean a lot of things. its either impeller blocked, out of water error, or a motor failure. If impeller is clear and it truly has been 3 years on the dot try to call dolphin or where you bought it and have a warranty claim done. dolphin will usually honor it if its within a few weeks of being out of warranty

[@ozzielara2337]

I’m in the market for a new cleaner and am seriously considering the Dolphin Cayman. I currently have a Pentair Rebel suction cleaner that has been in my pool since 2017. However even after the most recent tuneup it’s just not working properly. That being said, the fact that I would have to take out the robotic cleaner every time I use it is a bit annoying. I’m not kidding when I say the Pentair Rebel has lived inside my pool since 2017. I guess I have to figure out what do I value more…the fact that I would be able to use the skimmer with a robot or a suction pool cleaner that has been trouble free for a very long time but no skimming abilities. The thought of the robot is very intriguing to me though. The initial price difference is not that big of a deal ($399 for the Rebel vs $779 for the Cayman) but the maintenance cost of the robot vs the suction cleaner is concerning to me. I guess I have some more research to do before I decide to buy my next cleaner….

[@thedolphindoctor]

I would say its a trade off. the more its in the more convenient it is but maintenance cost would be up due to the degradation of parts being quicker. its a tough switch coming from a suction side as I did myself back in the day HOWEVER usually the maintenance cost of the suction side with either sometime of repair happening annually or bi-annually is why those suction sides "last long". The robots introduce brushing and better vacuuming filtration that I find worth it. Not sure what you mean by skimming as they wont skim the top of the pool. they will brush the top of the wall which is the "waterline" cleaning. Its worth the switch and if you take it out you should not have tons of maintenance compared to suction side. In the store I work at we sell dolphin but still have a good 30% of repairs be just yearly suction side maintenance which can add up to be $100-150 every year which is insane. Robots should not have that maintenance IF TAKEN OUT of the high chlorine. suction side goes for dirt, leaves etc. Robot goes for dirt, leaves, stuff you cant see with the ultra fine filters, scrubbing which is good to dismiss algae growth, and they dont need to run nearly as long which is less cost compared to running the pump to have the suction side work.

[@joseph9210]

Dolphin nautilus works then it just stops so I take out the tray on the bottom and been tapping the motor and then it worked just fine again but now stops working after 5 to 20 mins it just stops I was thinking of taking the screws out of the motor and seeing if there’s any debris in there. My worst case. Is that I have to buy a new motor the impeller is clean. Any thoughts?

[@thedolphindoctor]

yeah sounds like a motor issue. if you bought it within 2.5 years there is a warranty if you bought from a certified dealer

[@alexibonnet2634]

Thank you for this wealth of information I just purchased the Sigma by MayTronics this information will and come handy. I also subscribed subscribe to your channel. Thank you.

[@fireball2745]

I have a dolphin cc pro. Just bought in May. When I put it in the pool it starts normal. Goes forward for 5 seconds and stops for a few seconds then moves forward 5 more seconds and stops again. It’s still cleaning fine. It will just only go straight. Doesn’t turn or go up walls or go backwards. I have taken the impeller completely apart. There are no leaves or debris anywhere. The filters in the basket are completely clean. From what I can see nothing in the tracks and the back flap looks fine. At this point I have no idea what else to do. Any idea what my next step should be?

[@thedolphindoctor]

I would contact Maytronics and get it sent in for warranty. It only runs for a few seconds or it just goes the whole cycle forward? Sounds like a motor issue for sure but get it warrantied

[@sheadrasser6577]

Mine is not scrubbing, thinking i might need to replace the bruses? It sucks up debris but leaves most sand, silt, and fine debris on the floor of the pool. With clear marks from the wheels/tracks and most debris left behind.

[@thedolphindoctor]

do you have ultra fine filters in or are you using just the fine filters?

[@obiwansattic35]

Hi there- hoping you had some advice for me. I bought my dolphin E10 in 2021. It’s been running great until recently. After cleaning cycle The basket is filled with water and very little debris. Any suggestions what might be the problem? Thank you in advance

[@thedolphindoctor]

have you checked to see if the impeller is clean? if its filled with stuff it can effect suction power.

[@obiwansattic35]

⁠yes impeller zcomplete clean and free. Also My vacuum runs the full cleaning cycle no problem and I did the out of water test which it passed. Not sure if related but when I pull debris basket out often it becomes stuck and pulling harder causes debris door to release, dumping debris all over inside vacuum. Obviously not the design or how it first worked. Maybe something with springs inside on bottom? Also does this with another basket so not basket related.

[@thedolphindoctor]

@@obiwansattic35 not sure. The basket definitely seems off. Sometimes silty sand or the very small debris can act like a "glue" and makes it hard to take out but usually once it's out hosing the inside out and the basket to clean off that stuff fixes the issue. Not sure what it can be. It could be the fine filters aren't enough for this debris. You might need the ultra fine filters if you don't have them already

[@kimberromans8701]

How cold of water can you put nautilus cc plus in .

[@thedolphindoctor]

down to 43F degrees

[@jaycharles9548]

Question…… I have a new pool and of course it came with the modified pool drain cover that meets all safety requirements. I recently bought a nice cordless pool vacuum cleaner but unfortunately it would get stuck on the drain cover. I want to try another cordless pool vacuum but I’m afraid it will do the same thing and get stuck on the pool drain cover. Do the pool vacuums that come with the cord have more power than the cordless pool vacuums?

[@thedolphindoctor]

may I ask what cordless model or brand? some fair better then others I can try to point you in the right direction

[@cravenmorpus]

Idk if it works for all cleaners. But i know maytronics(dolphin cleaners ) have a slip in their box when you purchase their cleaner that states if you call them after your purchase, inform them of your drain covers and they will mail you the attachments for the drain, completely free this prevents the cleaner from getting stuck. Polaris has one, i believe it works for any cleaner but it's several 100$ . And you can also look up aftermarket or generic cover clips that you can install to the covers to prevent this

[@thedolphindoctor]

@@cravenmorpus Ive heard mixed things on this. Not sure if they cover the cost or not.

[@cravenmorpus]

@@thedolphindoctor maybe they no longer put the paper in there then. I never knew that until a customer who took care of his things along with keeping things ñ, he left his cleaner at my store as trash. He had a dx4 that was made and sold at least 8-9 years ago I j believe

[@thedolphindoctor]

@@cravenmorpus lol gotta love when people think a repair shop is a storage facility.. I know they recommend once but I don't think they cover the cost anymore.

[@user-my2ob8nn5t]

You people have talked me out of a new cleaner for now. Ill stick with my 1998 vintage Dolphin with the bag.

[@williamwilliamsii5290]

My Dolphin goes through the self test (moves forward, moves backward, and runs the fan. After that, it does not move. The basket is clean and the impeller is spotless. Any suggestions.

[@thedolphindoctor]

you can check the tracks to see if they are blocked by anything by the wheels. if not it sounds like a servo issue within the motor. which would require a motor replacement. you can see if the unit is still under warranty and have it fixed. if not look up a video on ("models name insert here" motor replacement) to see if you can do the repair on your own to save some cost.

[@hpdantzr]

‘Problems’ spelled wrong in video title. Thx for vid tho

[@tritonh5683]

This is facts. My robot just broke after three years being in the pool. Cord destroyed. Robot plastic cracked. The worse part is the plastic that hold the wheel are completely destroyed. This brought me here.

[@thedolphindoctor]

yup! this will do it. the plastics on the wheels can also get grinded down by sand or sand like silt over time. Once in a while try to shoot the wheels and brushes and behind / underneath the hard to reach spots with a hose to get that sand build up out. Cord will start to deteriorate and get sticky. Chlorine and ph- is corrosive. unfortunately nothing can really withstand those levels over time, even liners fade etc. I would try to encourage any fellow owners that this is really what kills these things early. if you avoid when you shock the pool and using the robot at the same time you should avoid a those really corrosive levels though. just give it two days to go back down then throw the robot in for the other 5 days. But of course its better to take out when you are not using it all together

[@tomlund4951]

Cool man… next I think I’ll get a pool….

[@thedolphindoctor]

Lol!

[@slater1182]

Why are your other videos private 🤷🏻‍♂️

[@thedolphindoctor]

Some big wig stores complained it was disparaging. So I took them down to keep the peace. Basically waiting on the all clear from KZbin.

[@TheMowpow]

Have you heard of anyone complaining about the E70 locking up after 3 or 4 days of running that requires the power to be cycled on the main unit? It's done this since I've had it 6 months. Works great for 4 or 5 days then I notice it stops cleaning and power cycling the controller is the only way to fix it.

[@thedolphindoctor]

is the filter clogged? Im assuming its left in the pool during this time?

[@TheMowpow]

@@thedolphindoctor yep left in the pool. Even if I take it out, clean the filter and put it back in the pool it won't run again until I power cycle the control unit. Since it's a tricky thing to reproduce I'm afraid to take it to service in fear I will get "tested fine".

[@thedolphindoctor]

@@TheMowpow I believe after the week on the weekly timer passes it does need to be reset. every week you need to set up the schedule.

[@karleenpetersen7473]

Accidently pressed the power on button twice in a row,, now the cleaner will not start up again. Tried unplugging it and restarting it with no luck..?

[@thedolphindoctor]

Leave it unplugged for a minute then try again. That shouldn't effect anything.... It's gotta be something else. You simply hit the power on and off

[@Post_Oak_]

how to keep it from getting stuck on the main drain? It gets stuck every single day

[@thedolphindoctor]

try running when pool pump is off and see if that helps as there will be no additional suction pulling it onto the main drain. also keep in mind if it gets stuck it usually will work to get itself unstuck within 5-10 minutes.

[@Post_Oak_]

@@thedolphindoctor I tried turning the pump off and it didn’t work. I did tape about 3” of pool noodle to the power chord and it worked

[@mjd716]

I took my Dolphin Nautilis out of my pool faithfully after each cleaning. Hosed it down each time and stored out of the elements. It only lasted three years and then the motor died. Maytronics would not just sell me a motor. They wanted me to mail the entire unit to them. How is this logical when you need the unit to work and clean your pool? Had to find an outside distributor to sell it to me. After replacing the motor, we are up and running again but now I would like to have the original motor repaired and I am unable to find someone/some place to do that. Maytronics will not repair it. They require me to send the entire unit in in order to replace the motor. Such a racket and so frustrating!!

[@thedolphindoctor]

unfortunately, they don't sell directly with any of their products. They want you to go to a store or online seller (like Amazon) to buy the part. For the future just ask them for the part number (unless it's under warranty which at that point have them do it for free).

[@mjd716]

@@thedolphindoctor yes, I found that out. I did contact Maytronics for the part number and then was able to find a business online who ordered the motor directly from Maytronics and had it sent to me.

[@thedolphindoctor]

@@mjd716 yeah unfortunately they do it like that

[@angiemonahan7839]

My dolphin is turning on but not moving what do I need to do??

[@thedolphindoctor]

Ok. When you mean turns on... Does the robot itself move AT ALL? Any lights? Or is the power supply the only thing working... What model do you have? Try to give me as much info as you can otherwise it's to generic it could be many things.

[@angiemonahan7839]

@@thedolphindoctor the power supply is working the propeller is working but the tracs are not moving at all. It is a dolphin nautilus cc plus iot cb. I bought it a year ago.

[@thedolphindoctor]

The pin might be loose that attaches to the tracks. Turn it on outside. Upside down. You should hear the drive motor turn on first and then a few seconds late the humm of the fan. At this point we can assure that the drive motor is working. At that point we know it's either the pin or something to do with the tracks causing the issue. The pin I'm talking about is what connects the motor and the track wheels.

[@cbc067]

was working great, but now it always gets stuck on the side of the steps. I've checked everything. So frustrating.

[@thedolphindoctor]

im assuming your talking about the cc plus. are both floats still on the cable. Is water level high enough? Those floats are very important when it comes to that particular unit getting stuck.

[@cbc067]

Sorry yes the CC plus. Water level is fine, and both floats are on the cable. It worked great for the first few months but now it gets stuck on the same step every time it runs. I've only had it maybe 5 months. @@thedolphindoctor

[@sergeolchowec905]

Don't know about 7 years. Got 3 Years out of one, & a year& a half out of the second one.

[@thedolphindoctor]

was it always left in the pool? used right after you shocked the pool? this is what causes them to last only that long. Chlorine is corrosive, especially at high levels. just because it's made to be in the water does not mean it's made to withstand a corrosive agent. nothing is. I've seen cleaners last 11 years and I've seen cleaners last 2 years. always correlates to chlorine exposure OR being misused during spring cleaning. all covered in this video on things to watch out for.

[@BenSanders76]

I've had Dolphin for almost a decade and a salt water pool. The Dolphin is just poorly engineered, cheap platics and parts at an exhorbinate prices. They are failing just like iRobot is. The cord has never swiveled, the cord rots in the sun not the chlorine. If the cleaner isn't meant to be left in the pool, then what is the use of daily timer cleaning. Dolphin admited the Tritan PS + which is the status design and it just poorly made.

[@thedolphindoctor]

The chlorine is most definitely what causes the rot. Usually the part of the cord outside the pool closest to the power box is fine. I would like to see where dolphin admitted they have a poor design if you can post the link that would be helpful. dolphin states what a good chlorine level is to use the robot in. I find that most people ignore this and that is what leads to 85% of failures. Use the schedule when the chlorine level is fine, then, when you shock the pool, use pH- chemicals, super-chlorinate with a salt generator take the cleaner out for 24-48 ours until the levels go back to normal. No plastic or brand for that matter will take insane amounts of chlorine or very concentrated pH reducer ACID without breaking down over time.

[@ilpostino88]

Seriously- who is leaving a robot permanently in a chlorinated environment? Or permanently exposed to UV rays ? We really live in a non scientific age

[@thedolphindoctor]

From being in the industry id say more then half of the people do. The argument is I've spent this money it's made for the pool it should be in the pool. It's a horrific statement. Then people go and complain all over social media complaining it's not working. Just imagine dealing with that sort of mindset.......

[@maverickthemutt]

I think it's the manufactures fault really. One of the biggest selling points for a vacuum is that it has a schedule computability. What's the point in setting it to clean every 2 days if you have to take it out after every cleaning

[@thedolphindoctor]

@@maverickthemutt it's one of those things, it's a double-edged sword. Instructions say to take it out during any chemical work but most people don't do that. It's more like a trade off. of course you can use the scheduler but it's up to you, would you rather do that or get 4 or 5 years more out of it by taking it out. It's up to the consumer. Almost every brand has it but NOTHING no matter what will always be subject to corrosive chlorine.

[@unknown9634]

I understand the PSU isnt waterproof. But it sits next to a pool, it should have some good water resistance at the least. We use one at work and the damn thing doesnt pick anything up anymore, does a very poor job. We have it in over night, it did get rained on a couple of times. Clean filters after every use and remove hair regularly from the impeller. Do you think its a PSU issue?

[@thedolphindoctor]

it's not the psu if there was water damage it wouldnt work. The impeller isn't broken right? It has all the blades? are the filters actually clean? Make sure to look at each tiny seam of the ultra-fine filters and make sure nothing is caked up in there. Ive had people tell me they are spotless yet have them come in 2x the weight they should be from stuff locked up in there. Other than that it might be a motor issue which at that point try contacting your seller or Maytronics directly to possibly get warrantied. how hold is the robot