Overview 

Any Nero with a controller button flashing red/blue or red/teal is an indication of a stall error.  This could mean the unit is overheating, or the motor/impeller is being obstructed.  To troubleshoot this error, follow the steps below.

Steps:

1. Disconnect the power cable from your Nero controller
2. Disassemble the Nero motor and soak in a 50/50 hot water/vinegar solution for 1 hour
3. Rinse and clean motor components
4. Re-install the Nero motor in your aquarium
5. With power still disconnected, press and hold the controller button.
6. Reconnect power, continue holding the controller button.
7. Release button once indicator begins flashing red.
8. Open the myAI app and locate your Nero
9. Add/Firmware update as directed by myAI 

For more assistance with disassembling and cleaning your Nero motor, please see the following instructional video.

Nero Cleaning Procedure

Important note: The Nero is a submersible powerhead and should never be run "dry" or outside of the aquarium.  This will inevitably cause damage to your motor and impeller which is not covered under warranty.