Troubleshooting guide
Dolphin power supply compatibility guide
Double-check before purchasing
- PSU part numbers and compatibility data change with each Dolphin model generation. Always verify with Maytronics support or the official parts database for your specific model year.
The Problem
Dolphin power supplies are not universal — each PSU is designed for a specific model family with matched voltage, current, and connector specifications. Using the wrong PSU can deliver incorrect power to the robot's control board, causing immediate or gradual damage. This guide explains how to identify the correct PSU for your Dolphin robot.
Steps
- 1
Locate the model number on a sticker on the underside of your Dolphin robot. Note the full model name including any suffix (e.g., E10, M400, M600, Nautilus CC Plus).
- 2
Find the part number on your current PSU sticker (if it still works). Match this part number when ordering a replacement.
💡 The PSU part number is the most reliable compatibility reference — more reliable than matching by robot model name alone.
- 3
If your PSU sticker is unreadable, contact Maytronics support with your robot model number. They can confirm the correct PSU part number.
- 4
When comparing PSUs, verify: output voltage (V), maximum current (A), and connector type. All three must match your robot's requirements.
- 5
If using an OEM replacement, ensure it is genuine Maytronics — not a rebranded or counterfeit unit. Purchase from Maytronics directly or an authorised dealer.
Possible Causes & Solutions
Purchased a replacement PSU without verifying model compatibility
Always cross-reference your Dolphin model number against the PSU part number before purchasing. The model number is on a sticker on the robot underside.
Using a PSU from a different Dolphin robot in the household
Dolphin PSUs look similar externally but have different output specifications. Do not swap PSUs between different robot models even if the connector appears to fit.
Third-party PSU with incorrect output specifications
Third-party PSUs may list approximate specifications that do not match Maytronics requirements precisely. An incorrect current profile can cause error codes or damage over time.
When to Replace
PSU compatibility does not degrade over time — this is a one-time selection process when purchasing a replacement. Always verify compatibility before ordering.
Where to Buy
Find compatible replacement parts from these retailers:
Compatible Parts
Maytronics Dolphin PSU — E Series (E10, E20, E30)
Confirm exact part number — E-series PSUs vary between model years.
Maytronics Dolphin PSU — M Series (M400, M500, M600)
M400 and M600 use different PSUs despite similar connector appearance.
Maytronics Dolphin PSU — Nautilus CC / CC Plus
Nautilus CC and Nautilus CC Plus may use different PSU specifications.
Frequently Asked Questions
Can I use my M400 PSU on my E10 if the connector fits?
No. Even if the connector fits physically, the output voltage and current specifications differ between M-series and E-series robots. Using the wrong PSU risks damaging the control board.
How do I find my Dolphin model number?
The model number is on a label on the underside of the robot body. It may also be in the original user manual or on the original purchase receipt. Look for a format like "Dolphin E10" or "Dolphin M400".
Are older Dolphin PSUs compatible with newer robots?
Not necessarily. Maytronics updates PSU specifications with new robot generations. An older PSU may not deliver the correct power profile for a newer robot, even if the connector looks identical.
Still not working?
See our complete troubleshooting guide for all common issues:
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