Roborock Error Codes Explained: What They Mean and How to Fix Them

Step-by-step fix guide | Roborock robot vacuums

Try this first — Read the notification in the Roborock app first: it tells you what has gone wrong.

In Roborock’s manuals for the Saros 20, Saros 20 Neo, Saros 10, Qrevo Curv, Qrevo Edge 2, Qrevo 2 Pro, Qrevo S Pro, Qrevo S5V, QV 35S, Q10 and Q7, errors show as a red light, a notification in the Roborock app and a voice alert, without numbered codes (apart from one dock alert on the Saros 10). Older Roborock robots such as the S7 use numbered error codes. This guide covers both.

What This Problem Means

An error means the robot has stopped because of a problem it can’t sort out by itself, such as a jammed brush, a dirty sensor, a blocked dock or a low battery.

Common Symptoms

  • The robot stops and its power light flashes red
  • A notification appears in the Roborock app
  • You hear a voice alert, on older robots with an error number
  • The dock’s status light is red

Safe Checks You Can Try

1. Read the app notification

On the current models, Roborock’s manuals say that if an error occurs, the power light flashes red or the dock’s status light turns steady red, a notification appears in the app and a voice alert may sound. The notification tells you what to fix.

2. Fix the cause, then restart

For abnormal behaviour, the manuals say to restart the robot. The S7 manual adds: after fixing an error, move the robot and restart cleaning, and after a sensor error, clean the sensor and try again.

3. Clean the sensors and brushes

Many errors come from a dirty sensor or a jammed brush. Roborock says to wipe all the sensors with a soft, dry cloth, and to turn the robot off and clean the main brushes, side brush and main wheels if they are jammed.

4. Don’t leave it in an error

Roborock says the robot goes to sleep by itself if it is left with an error for more than 10 minutes.

5. Try a system reset

The S7 manual notes that a system reset may resolve some problems. See our guide to resetting a Roborock for the steps on each model.

Roborock error codes (S7 manual)

Error Meaning and fix (Roborock S7 manual)
1 LiDAR turret or laser blocked. Check for obstruction and retry.
2 Bumper stuck. Clean it and lightly tap to release it.
3 Wheels suspended. Move robot and restart.
4 Cliff sensor error. Clean cliff sensors, move robot away from drops and restart.
5 Main brush jammed. Clean main brush and bearings.
6 Side brush jammed. Remove and clean side brush.
7 Wheels jammed. Move the robot and restart.
8 Robot trapped. Clear obstacles surrounding robot.
9 No dustbin. Install dustbin and filter.
12 Low battery. Recharge and retry.
13 Charging error. Clean charging contacts and retry.
14 Battery error.
15 Wall sensor dirty. Clean wall sensor.
16 Robot tilted. Move to level ground and restart.
17 Side brush error. Reset robot.
18 Fan error. Reset robot.
21 Vertical bumper pressed. Move robot and retry.
22 Dock locator error. Clean and retry.
23 Could not return to dock. Clean dock location beacon and retry.
27 VibraRise system jammed. Check for obstructions.
28 Robot on carpet. Move robot to floor and retry.
No number Filter blocked or wet. Clean, dry, and retry.
No number No-go zone or Invisible Wall detected. Move robot from this area.
No number Cannot cross carpet. Move robot across carpet and restart.
No number Internal error. Reset the robot.

These are the codes listed in the Roborock S7 manual. If you have another older Roborock, check the error list in its own manual.

Error 42 on the Saros 10

The Saros 10 manual lists one numbered alert. If the robot says “Error 42” and the maintenance brush stops at one side of the cleaning sink: at the left side it may be jammed, so remove anything jamming it; at the right side the water filter may be blocked or not fitted, so clean it and fit it in place.

A red light on the dock

A steady red light on a Roborock dock has its own causes, such as a water tank that needs filling or emptying. See our guide to the Roborock dock red light.

When To Contact Support

If none of these checks fix it, contact Roborock through its UK contact page, with your robot’s model and the serial number from the sticker underneath it.