E12
OKP Water Tank / Mopping Module Detection Error

Robot vacuum shows E12 and stops when mopping kit is attached

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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.

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Possible Causes

Mop water tank not fully inserted, Mop detection switch dirty or stuck, Electrical contacts between tank and robot corroded, Mopping module internal fault

How to Fix / Troubleshooting

Safety first: Turn OFF the robot and remove the water tank. Do not work on the robot while water is leaking.

  • Step 1 – Inspect tank: Check that the tank is not cracked and that its latch is intact.
  • Step 2 – Clean contacts: Wipe the metal contacts on both the tank and the robot with a dry cloth. Ensure they are dry and free of corrosion.
  • Step 3 – Check detection switch: Look for a small plunger or switch where the tank slides in. Press it gently to ensure it moves freely.
  • Step 4 – Reinstall tank: Slide the tank in firmly until it clicks. Avoid forcing it at an angle.
  • Step 5 – Test mopping mode: Turn ON the robot and start a mopping cycle. If E12 recurs, the mopping module or detection circuit may need replacement.
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Repair Difficulty

Medium 3/5

Required Part

Mopping Module / Water Tank Assembly
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