E18
Ultenic
Obstacle Sensor / Anti-Collision Error
Robot vacuum displays E18 and stops near carpets or thresholds.
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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
Dirty front IR sensors, Faulty obstacle sensor board, Loose sensor cable, Strong sunlight or reflective surfaces
How to Fix / Troubleshooting
Safety first: Turn OFF the robot.
- Clean front sensors: Wipe all front-facing IR sensor windows and camera lenses with a microfiber cloth.
- Check environment: Avoid using the robot in direct sunlight or on highly reflective floors that can confuse IR sensors.
- Inspect for damage: Ensure the front sensor housing is not cracked or pushed in from impacts.
- Reboot and test: Power the robot ON and run it in an open, non-reflective area.
- If E18 continues: The front obstacle sensor board or its harness may be defective and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Front Obstacle Sensor Board
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