Troubleshooting · Troubleshooting

My Dolphin Liberty doesn't complete the cycle, with red LED on the power unit

From Maytronics support, updated 2026-04-26, rewritten for clarity.

Read the fix
The fix

Step by step.

The Liberty 200 & 300 manufactured from 2024 onwards, have a 120 minute cycle time. The Liberty 200 & 300 manufactured before 2024 have a 90 minute cycle time.

Try the following troubleshooting steps:

  1. Clean the filter cartridges.
How to clean the filters
  1. Check the tracks to see if any debris is stuck there.
How to clean the tracks

Make sure the robot is unplugged, turn the robot upside down, and check the tracks and brushes for any obstructions or visible damage.

  1. Check the impeller.

  2. Charge the robot for a full charging cycle, until the power unit LED shows 3 steady LEDs.

  3. For the Liberty 300/400/600, verify that the Eco Mode is not set. To cancel the Eco Mode, take the robot out of the pool and connect it to the charger.

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

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