error-1 Troubleshooting

Bumper / cliff sensor error on the eufy 11S Max

Source: Goods Scene — Roborock error codes list 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 bumper and cliff sensors

Turn the robot over and wipe the bumper and all cliff sensors on the underside with a dry cloth. Restart and retry.

Source: ProductDB robot-vacuum seed Confidence: 80% Verified Aug 8, 2026
Difficulty: ★ Est. 5 min

Inspect the bumper assembly

Check that the bumper is not stuck against the chassis. Gently press it to confirm it moves freely.

Source: ProductDB robot-vacuum seed Confidence: 80% Verified Aug 8, 2026
Difficulty: ★★ Est. 10 min

Clean the LDS

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

Source: Goods Scene — Roborock error codes list Confidence: 90% Verified Aug 9, 2026
Difficulty: ★ Est. 5 min

Restart the robot

Turn the robot off and on to reset the sensor.

Source: Goods Scene — Roborock error codes list Confidence: 90% Verified Aug 9, 2026
Difficulty: ★ Est. 2 min

Replacement parts for the eufy 11S Max

eufy L60 Filter eufy L60 Left side brush eufy L60 Right side brush eufy L60 Side brush set eufy L60 Main Brush Roller eufy L60 SES Filter eufy L60 SES Left side brush eufy L60 SES Right side brush eufy L60 SES Side brush set eufy L70 Filter eufy L70 Left side brush eufy L70 Right side brush eufy L70 Side brush set eufy G10 Filter eufy G10 Left side brush eufy G10 Right side brush eufy G10 Side brush set eufy L60 SES Main Brush Roller eufy L70 Main Brush Roller eufy G10 Main Brush Roller eufy G10 Pro Filter eufy G10 Pro Left side brush eufy G10 Pro Right side brush eufy G10 Pro Side brush set eufy G20 Filter eufy G20 Left side brush eufy G20 Right side brush eufy G20 Side brush set eufy G40 Filter eufy G40 Left side brush eufy G40 Right side brush eufy G10 Pro Main Brush Roller eufy G20 Main Brush Roller eufy G40 Main Brush Roller eufy G40 Side brush set eufy G30 Filter eufy G30 Left side brush eufy G30 Right side brush eufy G30 Side brush set eufy 15C Filter eufy 15C Left side brush eufy 15C Right side brush eufy 15C Side brush set eufy 15C Max Filter eufy 15C Max Left side brush eufy 15C Max Right side brush eufy 15C Max Side brush set eufy G30 Main Brush Roller eufy T2251 Main Brush Roller eufy T2252 Main Brush Roller eufy 30C Filter eufy 30C Left side brush eufy 30C Right side brush eufy 30C Side brush set eufy 30C Pro Filter eufy 30C Pro Left side brush eufy 30C Pro Right side brush eufy 30C Pro Side brush set eufy 35C Filter eufy 35C Left side brush eufy 35C Right side brush eufy 35C Side brush set eufy T2190 Main Brush Roller eufy T2290 Main Brush Roller eufy 11S Filter eufy 11S Left side brush eufy 11S Right side brush eufy 11S Side brush set eufy 11S Max Filter eufy 11S Max Left side brush eufy 11S Max Right side brush eufy 11S Max Brush guard eufy 11S Max Side brush set eufy 11S Max Cable organizer eufy 11S Max Cleaning tool eufy 11S Max Charging cable eufy 11S Max Remote control eufy T2107 Main Brush Roller eufy T2118 Main Brush Roller eufy T2118 Floor Cleaning Solution eufy T2191 Main Brush Roller eufy T2118 Replacement Battery eufy T2118 HEPA Filter eufy T2118 Side Brush eufy T2118 Mop Pad eufy T2118 Dust Bag eufy T2118 Water Tank Filter eufy T2118 Dock Filter

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