Question about Smart Pool Inc Dolphin Diagnostic Automatic Pool Cleaner Ne250

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Robot not climbing walls, is vinyl pool too slippery?

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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

Posted on May 29, 2010


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Problem with the Aquabot Robotic Pool Cleaner Just

The service center is stonewalling you; contact them again and demand they look at it. The unit should run consistently regardless of water balance. Water balance will affect the lifespan for a product like a pool cleaner but not whether or not it works at all. As for climbing, water temp plays a roll but 65 should be enough...what material are the pool walls? Fiberglass or some lines are too slippery for the standard brushes to climb efficiently. The service center should be able to recommend any changes that may be required due to certain pool materials you may have. Discuss that issue further with them or the manufacturer.


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The dolphin maytronics does not climb the wall

Thank you for posting your question here on

Several possibilities to consider...

How old is the filter bag and is it clean?
Older bags or bags not thoroughly cleaned can resist water passing thru them to the point there is not enough downward pressure to allow the unit to 'bite' the pool surface and climb.

How worn are the brushes and tracks?
Worn brushes and tracks will slip once worn enough. Replacing them could fix the problem.

Is it trying to climb or does the unit start up the wall and immediately reverse?
If your motor has been replaced new style motors spend far less time climbing assuming most debris will instead be found on the pool floor. If it has not been recently replaced the program within the motor may be failing.

What is the condition of the pool?
Low water temperatures and/or algae can cause the unit to slip in place and as a result it will not climb. Eventually it will scrub enough to gain traction and will slowly progress up the wall. For temperatures below 70 degrees the unit will find in more and more difficult to climb the lower the temperature.

What material is the pool surface?
Some linered pools and fiberglass pools require climbing rings in the brushes. Do you have those? If so, what condition are they in? Worn rings or missing rings will prevent climbing those and other smooth pool finishes.

For more troubleshooting tips try our site at Select the FAQ button then from the drop-down select Dolphin. You can also check the manufacturer's site at

If this answer does not fix your problem, please comment with additional details prior to rating the answer. Positive feedback is appreciated once your problem is solved!

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My cleaner works for a few minutes, climbs a wall and rolls over onto it's head.

If the problem always occurs when the pool cleaner starts to climb walls, there are a few things that you will want to check. First of all, if your pool has a vinyl liner, this pool cleaner has limited climbing ability. You need to check the flow of water through the cleaner with your flow gauge. It might be low. If it is, increase the water flow. Also, make sure that your hose weight positioning is correct. The cleaner should sit at a 45 degree angle at the bottom of the pool when resting when the weights are right.

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What is the difference between the red light and green light?

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