Error 7
Xiaomi Drive Wheel Obstruction or Encoder Fault

Robot vacuum reports 'Error 7' / voice prompt 'Error 7: Wheel stuck' and cannot move or turns in circles.

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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

Foreign object jammed in wheel well, Hair wrapped around wheel axle, Faulty wheel encoder sensor, Damaged wheel motor gearbox

How to Fix / Troubleshooting

Safety first: Turn off the robot and place it upside down on a soft cloth.

  • 1. Clear obstructions:
    • Inspect both drive wheels for trapped objects (cables, toys, rug fringe).
    • Remove any obstructions by hand or with tweezers.
  • 2. Remove hair from axles:
    • Use tweezers or a small pick to pull hair from around the wheel axles.
  • 3. Check wheel travel:
    • Press each wheel up and down; it should move smoothly.
    • Rotate each wheel; it should turn without grinding.
  • 4. Test after cleaning:
    • Power on the robot and start a short cleaning run.
    • If the robot still reports a wheel error or spins in place, the encoder or motor may be faulty.
  • 5. Advanced repair:
    • Remove the bottom cover and disconnect the suspect wheel module.
    • Inspect the encoder disc and sensor; clean gently with compressed air.
    • If damage is visible or the motor is seized, replace the wheel module.
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Repair Difficulty

Medium 3/5

Required Part

Drive Wheel Module
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