This error can show up during the active leveling process. It means that there is a problem with the capacitive sensor in the print head that is used for the active leveling.
Simply power cycling the printer and restarting the active leveling process can help to resolve the issue. To do this, follow these steps:
- Restart the Ultimaker S5 using the on/off switch
- Perform active leveling again and check if the Ultimaker S5 completes the process without showing the error message. Make sure to not touch the Ultimaker S5 during the active leveling process
If the problem still persists, please contact support by raising a support request above.