For further information, please contact RIVA After Sales & Service Department.
| Problem | Cause | Corrective action |
| 1. The electric motor does not turn and the warning light on the control panel is OFF | No electric power supply | Check that the main magneto-thermal switch has been activated |
| Check the status of the fuses of the control and main current; if necessary, replace them | ||
| Possible presence of a short circuit; check the cables | ||
| 2. The electric motor does not turn and the warning light on the control panel is ON | Presence of a foreign body in the tunnel, which blocks the thruster | Check and eliminate the cause of the block |
| 3. The motor turns too slowly | The battery is insufficiently charged | Adequately charge the batteries |
| Poor brush contact | Replace the blades | |
| Presence of seaweeds or fishing line stuck in the thruster | Proceed to clean | |
| 4. The motor turns (too) quickly but there is no propulsion | The safety pin has broken due to the presence of an object in the tunnel | Replace the safety pin and eliminate the cause of the block of the thruster |