Roborock Water Tank or Valve Leakage

Robot vacuum leaves wet streaks, puddles, or drips water when not in mopping mode.

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Possible Causes

Water tank overfilled, Tank seal or gasket damaged, Water valve stuck open, Mop pad holder not installed correctly

How to Fix / Troubleshooting

Safety first: Turn off the robot and remove the water tank. Keep water away from electrical contacts.

Step-by-step:

  • Inspect tank exterior: Check for cracks or visible leaks by filling the tank and holding it over a sink.
  • Check seals and caps: Inspect rubber gaskets and caps on the tank. Replace the tank if seals are damaged and not serviceable.
  • Remove mop pad when docking: To reduce drips, remove the mop pad before long docking periods or use a waterproof mat under the dock.

If water continues to leak from the robot body itself, stop using the mop function and seek service; internal water damage can affect electronics.

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Repair Difficulty

Easy 2/5

Required Part

Mop Water Tank Assembly
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