This can occur if the clean water tank is not installed or if the water level is low.
To solve the issue, please refer to the following steps:
1. Remove the clean water tank and check if the floater and filter at the bottom are in place. If missing, please contact the local after-sales service center;
2. If the water level is insufficient to complete the task, you will receive an error. Add enough water to make the robot vacuum continue to work;
3. Ensure the clean water tank is properly seated and gently press it down;
4. If the water tank is full and the error persists, unplug the omni station, wait for 1 minute, and then plug it back in before trying again.
If the problem continues, please contact the local after-sales service center for further assistance.