Troubleshooting · Troubleshooting

My Liberty doesn't climb the walls

From Maytronics support, updated 2026-04-29, rewritten for clarity. Parts that fix it are below.

The fix

Step by step.

If you notice that your Dolphin Liberty has difficulty climbing the walls, try the following troubleshooting steps:

  1. Check that the filters are not dirty or clogged (although the filters may look clean, small particles may dry on the material and clog it). It is recommended to clean the filter cartridges after each use, but a deeper cleaning may be required.
How to clean the filter basket

Ensure that the filter panels in the basket are properly installed, tightly fitted, with no visible gaps, and that the filter panels are properly clipped to the bracket.

  1. If the Dolphin still does not climb the walls, please remove the filter basket and run the robot for 10-15 minutes for testing purposes only.

Caution: Make sure there isn't any hard and/or sharp debris in the pool that can damage the robot impeller (which will no longer have the filter during the test).

If the Dolphin climbs without the filters, then the filters are due to be replaced.

  1. Verify that the chemicals are balanced, this is essential for the best results from your Dolphin. Make sure that the water in your pool is balanced and free of algae.

If your Dolphin tries to climb but slips on the wall, try brushing the wall with a broom until the biofilm is removed. If necessary, rebalance your pool water. to shop our pool chemicals

  1. It is important to ensure that the pool temperature levels are within our recommended usage range: 43°–95°F. Low temperatures can make it difficult for the robot to climb.

Source: Maytronics support. Rewritten for clarity with the same steps; the videos and illustrations are Maytronics' own.

Replacement parts

Parts that fix this.

This answer comes down to brushes & climbing rings. The exact part depends on the model: choose your robot and we open its parts list, or browse the category for every model.

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