Mopping Not Working
Roborock Robot Vacuum
Severity: MinorWhat Does This Error Mean?
A Roborock mop that is not dispensing water usually has an empty water tank, a blocked water outlet nozzle, or the mop cloth is not correctly attached. Refill the tank and check the cloth alignment.
Affected Models
- Roborock S5 Max
- Roborock S6 MaxV
- Roborock S7
- Roborock S7 MaxV
- Roborock Q7 Max
- Roborock S8
Common Causes
- Water tank empty or not properly seated on the robot
- Water outlet nozzle blocked by mineral deposits
- Mop cloth not attached correctly to the bracket
- Water flow set to Off in the app settings
- Robot in vacuum-only mode with mopping disabled
How to Fix It
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Remove the water tank, refill it, and reattach it firmly until it clicks.
The water tank must be full and fully clicked into place. A tank that is not seated correctly will not feed the mop outlet.
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Check the water outlet nozzle at the bottom of the tank for blockages.
Mineral deposits from hard water can clog the small outlet nozzle over time. Rinse the nozzle under warm water and use a toothpick to gently clear the opening.
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In the Roborock app, confirm the water flow level is not set to Off.
Go to the mopping settings in the app and ensure water flow is set to Low, Medium, or High. If set to Off, the pump will not activate and no water will be dispensed.
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Remove and reattach the mop cloth to the mopping bracket, ensuring all corners are tucked in.
A mop cloth that is not fully attached may not make even contact with the floor. Stretch the cloth evenly over the velcro bracket and press all edges down firmly.
Frequently Asked Questions
How much water should the Roborock mop use per clean?
At the Medium setting, a Roborock S7 with a full 300 ml tank can mop approximately 200-250 square metres. If the tank is empty after a small area, the flow setting may be too high.
Can I use cleaning solution in the Roborock water tank?
Roborock recommends using only clean water to avoid damaging the pump and seals. Only use cleaning solutions specifically approved for robotic mops. Never use bleach, strong detergents, or essential oils — they damage internal components.