Robot vacuum does not dispense any water during mopping, but no error code is shown.

Safety first: Turn OFF the robot and remove the water tank.

• Fill tank: Fill with clean water to the indicated level.
• Clean tank filter: If your tank has a small mesh filter at the outlet, remove and rinse it to clear mineral buildup.
• Prime system: Reinstall the tank and start mopping mode for several minutes. Check if the pad becomes damp.
• Replace tank: If no water flows despite these steps, replace the water tank module (which includes the pump on some models).