Roborock robot vacuum (mopping models) reports “Error 22” / “Water pump error” and will not dispense water.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety first: Turn off the robot and remove the water tank. Do not run the pump dry for extended periods.
Step-by-step:
- Refill tank: Fill the water tank with clean water up to the indicated level. Avoid using thick cleaning solutions that can clog the pump.
- Check filter and outlets: Inspect any small filters or mesh screens in the tank for debris. Rinse them under water.
- Reinstall tank and test: Reattach the tank securely and start a mopping task. Check if the mop pad becomes damp after a few minutes.
If no water flows and the error persists: The internal pump in the tank or robot may be defective. Replacing the water tank (if pump is integrated) or the pump module is required.
Repair Difficulty
Required Part
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