Medion Navigation / Gyro or Wheel Encoder Misread

Robot vacuum keeps circling in one spot or moving in tight loops instead of covering the room.

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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

Faulty wheel encoder on one drive wheel, Gyroscope drift, Debris affecting wheel rotation, Mainboard navigation logic fault

How to Fix / Troubleshooting

Safety first: Turn OFF the robot before inspecting wheels.

  • Step 1 – Clean wheels: Remove hair and debris from both drive wheels and ensure they rotate freely.
  • Step 2 – Level surface test: Run the robot on a flat, open area and observe its pattern. If it still loops, one wheel may be underpowered.
  • Step 3 – Swap wheel modules (advanced): If possible, swap left and right Medion wheel modules to see if the behavior changes sides. This helps identify a bad wheel encoder.
  • Step 4 – Replace faulty wheel module: Replace the drive wheel module that causes looping.
  • Step 5 – Mainboard replacement: If both wheels are good, the gyro or navigation IC on the mainboard may be faulty and require board replacement.
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Repair Difficulty

Hard 4/5

Required Part

Drive Wheel Motor Module
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