Is this when running the Motor Setup test for thruster 1, or are you getting the error while running Automatic Motor Direction Detection? If it’s during direction detection, can you try just the single thruster test and see if the expected one rotates when you tell it to?
Feel free to include a photo if that’s helpful. Also if there’s any chance the motor could have been manually reassigned to a different servo output then it’s likely worth checking the
- While the ROV is off, can you spin that thruster freely by hand, or is there some resistance? It’s possible there’s something caught in it (e.g. fishing line, large particles) that’s causing it to stall
- If you’re using a non-standard thruster configuration then it’s also worth checking the Frame tab and making sure the correct frame is selected for the vehicle