E4
Eureka Drive Wheel Motor Stall / Overload

Robot stops and announces E4; wheels may not move or robot spins in place briefly before stopping.

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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

Debris jammed in left or right wheel, Wheel height adjustment mechanism clogged, Drive wheel motor gearbox worn or seized, Drive wheel motor encoder blocked

How to Fix / Troubleshooting

Safety first: Power off the robot and remove it from the dock.

  • Inspect wheels: Turn the robot over. Spin each drive wheel by hand. They should rotate smoothly and spring up and down.
  • Clear debris: Remove hair, threads, or carpet fibers wrapped around the wheel axles or stuck in the wheel wells.
  • Check suspension: Press each wheel up and down to ensure it moves freely. Clean any dust or debris from the suspension cavity.
  • Test movement: Power on the robot and start a cleaning cycle on a flat surface. Observe if one wheel fails to move.
  • If E4 continues: The affected Drive Wheel Motor Assembly may have a damaged gearbox or encoder. Replace the left or right drive wheel module as needed. This typically requires removing the bottom cover, disconnecting the motor harness, and swapping the module.
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Repair Difficulty

Medium 3/5

Required Part

Left or Right Drive Wheel Motor Assembly
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