error-1 Troubleshooting

Bumper / cliff sensor error on the dreame L40 Ultra AE Saugroboter

Source: Dreame support — robot vacuum troubleshooting Confidence: 90% Verified Aug 9, 2026

The robot reports a sensor fault and stops or moves erratically. The bumper or cliff sensors may be blocked by dirt or damaged.

How to fix Bumper / cliff sensor error

Clean the LDS

Check for dust, hair, or obstructions around the laser sensor. Gently clean it and restart the robot.

Source: Dreame support — robot vacuum troubleshooting Confidence: 90% Verified Aug 9, 2026
Difficulty: ★ Est. 5 min

Restart the robot

Turn the robot off and on to reset the sensor.

Source: Dreame support — robot vacuum troubleshooting Confidence: 90% Verified Aug 9, 2026
Difficulty: ★ Est. 2 min

Replacement parts for the dreame L40 Ultra AE Saugroboter

Dreame L40 Ultra AE Saugroboter Replacement Battery Dreame L40 Ultra AE Saugroboter HEPA Filter Dreame L40 Ultra AE Saugroboter Side Brush Dreame L40 Ultra AE Saugroboter Main Brush Roller Dreame L40 Ultra AE Saugroboter Mop Pad Dreame L40 Ultra AE Saugroboter Dust Bag Dreame L40 Ultra AE Saugroboter Water Tank Filter Dreame L40 Ultra AE Saugroboter Floor Cleaning Solution Dreame L40 Ultra AE Saugroboter Dock Filter

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