Troubleshooting · Use & Maintenance
Why doesn't my cordless robot respond to the app while underwater?
Short answer: Your cordless robot disconnects from Wi-Fi and Bluetooth underwater, so select its cleaning program in the app before placing it in the pool.
Take the robot out of the pool and reconnect over Wi-Fi. Set its program in the Maytronics One app before putting it back in the water.
Based on Maytronics support, updated 2026-04-16, rewritten by Poolbots' pool experts. Applies to 5 models.
The fix
Step by step.
Cordless EON™ and Liberty 400/600 robots do not maintain a Wi-Fi or Bluetooth connection while submerged and cleaning. Once underwater, the robot follows its selected program on its own, without an active app connection.
Set the program before putting the robot in the pool
These Maytronics One app instructions apply to Dolphin EON 100, Dolphin Nautilus EON 100, Dolphin EON 120d, Dolphin Nautilus EON 120d, and Dolphin Liberty 600.
- With the robot out of the water, connect to it over Wi-Fi in the Maytronics One app.
- Choose your cleaning mode or weekly schedule (UltraRun™ Mode/Eco Mode).
- Put the robot in the pool to start the cycle. It will carry out the program you selected independently.
Reconnecting after cleaning
If the robot was previously connected, its Wi-Fi connection to the app returns automatically after you take it out of the water.
Other connection types
Corded robots can stay connected to Wi-Fi throughout cleaning because their connection runs through the power supply, which stays outside the pool.
Liberty 400 uses Bluetooth only and pairs with the MyDolphin Plus app, not the Maytronics One app.
Source: Maytronics support. Same steps and facts, rewritten for clarity; the videos and illustrations are Maytronics' own.
By model
This fix on your robot.
Every model below has its own troubleshooting guide that repeats this fix with the exact parts that fit it. The link opens the guide on this fix.
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