E4
AEG
Bumper Stuck or Collision Sensor Fault
Robot vacuum shows E4 and refuses to start cleaning, often after being moved manually.
Advertisements
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.
Advertisements
Possible Causes
Front bumper jammed by debris, Bumper springs misaligned, Infrared collision sensors blocked, Bumper switch failure
How to Fix / Troubleshooting
Safety: Power OFF the robot.
- Check bumper movement: Gently press the front bumper in and release. It should move freely and spring back evenly across its width.
- Remove debris: Inspect the gap between the bumper and the body. Use a soft brush or compressed air to remove dust, crumbs, or small objects.
- Clean IR windows: Wipe the transparent windows on the front bumper with a soft, dry cloth to clear any smudges blocking the collision sensors.
- Reset robot: Turn the robot back ON and perform a system reset if available in the AEG app or via button combination (refer to user manual).
- If E4 continues: The bumper switch assembly or collision sensor board may be defective and require replacement. This involves disassembling the front housing; seek professional service.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Front Bumper Switch Assembly
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements