Troubleshooting · Power & Connectivity
Why isn't my Dolphin power supply working properly?
Short answer: Check the outlet and cables, then test the power supply with the blue cable disconnected to help identify a power supply, cable, or motor issue.
Try a different GFCI outlet you know works. Plug the power supply directly into the outlet without an extension cord.
Based on Maytronics support, updated 2026-04-26, rewritten by Poolbots' pool experts. Parts that fix it are below.
The fix
Step by step.
Use Maytronics' self-service troubleshooting tool to check your Dolphin and start a warranty claim for a repair or replacement power supply.
For repair help, including robots purchased from a local dealer, chat with Poolbots' pool experts. For warranty repairs, Poolbots will point you to Maytronics' service process.

Follow these steps if your power supply stops working, trips the GFCI outlet, or will not turn on.
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Step 1Check the power source
Try a different GFCI outlet that you have confirmed works. If you are using an extension cord, remove it and plug the power supply directly into the outlet.
If the power supply still will not turn on, continue to Step 2.
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Step 2Inspect the blue and black cables
Unplug the power supply. Look over the blue cable and the black power supply cord for cuts, kinks, fraying, or other visible damage.
If you find damage, stop and arrange a cable replacement. Start a warranty claim or chat with Poolbots' pool experts for help.
If both cables appear undamaged, continue to Step 3.
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Step 3Isolate the source of the problem
This test helps determine whether the problem is with the power supply, the cables, or the Dolphin's motor unit.
- With the power supply unplugged, disconnect the blue cable from it.
- Plug the power supply into a working GFCI outlet.
- Turn on the power supply, leaving the blue cable disconnected.
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Step 4Check the test result
The power supply turns on and stays on
This result points away from the power supply. The Dolphin's cable or motor unit may be causing the problem.
An authorized Dolphin technician should diagnose and repair the robot. Submit a repair request or chat with Poolbots' pool experts. For warranty repairs, Poolbots will point you to Maytronics' service process.
The power supply will not turn on or shuts off immediately
If it will not turn on, shuts off right away, or has stopped working altogether, the power supply appears to be the problem. Use Maytronics' self-service tool to start a warranty claim for a replacement power supply.
You can also chat with Poolbots' pool experts about replacement options, including if you purchased the robot from a local dealer.
Maytronics does not repair power supply units.
A specific power supply feature is not working
Check your robot's user manual to confirm which features your model includes.
The power supply will not connect to Wi-Fi
Source: Maytronics support. Same steps and facts, rewritten for clarity; the videos and illustrations are Maytronics' own.
Replacement parts
Parts that fix this.
This answer comes down to power supplies & chargers. The exact part depends on the model: choose your robot and we open its parts list, or browse the category for every model.
Browse by category:Power Supplies & Chargers All genuine Dolphin parts →
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