For further information, please contact RIVA After Sales & Service Department.
| Problem | Cause | Corrective action |
| 1. The system does not react to the controls | Flat battery | Verify that the battery of the sender is loaded or correctly inserted | Verify that the self learning of the sender code has been carried out |
| Possible presence of a short circuit; check the cables | Check that the hydraulic control unit is correctly supplied; check for the integrity of the fuse | |
| 2. The gangway does not move smoothly | The hydraulic power unit has a thermal protection | Wait until hydraulic power unit is disconnected (about 5 minutes) and retry handling on the adjusting trimmer (shift few degrees each time), if the problem continues, also with trimmer at bottom scale (clockwise) address to service department |