There is a battery fault.
If you are charging the battery without a wall mounting, pull the charging plug out of the charging socket on the rear of the PowerUnit.
Remove the vacuum cleaner from the wall bracket if you are charging the battery in the wall bracket.
Wait approx. 5 minutes before continuing to charge the battery.
It is essential to take prescribed ambient temperatures into account when charging and using the battery.
Ambient temperature when charging: 10 °C to 40 °C
Ambient temperature during use: 0 °C to 45 °C
If the fault persists, please contact us or book a repair appointment online.