Fault F4 appears on the robot vacuum cleaner display.
Switch the robot vacuum cleaner off. The switch is located on the side of the robot vacuum cleaner. Depending on the model, press the I/0 switch to switch position 0 or the ON/OFF switch to switch position OFF.
Clean the drive wheels:
Place the robot vacuum cleaner upside down on a level, clean surface.
Remove any dirt or hairs from both drive wheels.
Then check that the wheels are able to move up and down freely.
If the robot vacuum cleaner gets stuck, the robot vacuum cleaner will shut down due to overload.
The robot vacuum cleaner can get stuck in a deep-pile carpet or get caught in a cable, for example. Another possible cause can be lack of space for the robot vacuum cleaner to pass underneath furniture.
Remove all objects obstructing the surface to be cleaned and restart the robot vacuum cleaner.
If the fault keeps reoccurring in the same place, move the robot vacuum cleaner’s charging station 5 cm to the left or right to modify the cleaning routes taken by the robot vacuum cleaner.
Remove these objects and clean the roller brush as follows:
Clean the roller brush as required. For this, you will require the cleaning tool which is located at the top of the dust box lid.
Place the robot vacuum cleaner upside down on a level, clean surface.
Using both hands take hold of 2 opposite elastic Corner Brush holders and pull them upwards to remove them.
Release the roller brush cover and remove the cover.
Remove the roller brush.
With a pair of scissors, cut any threads or hairs that have become entangled on the roller brush. To guide the scissors, move along the guide track in the roller.
Depending on the model, remove threads and hair using the wiper which is located on the bottom of the cleaning tool.
Refit the roller brush. Make sure you position it carefully.
Lock the cover, making sure it clicks into position. Make sure you position it carefully.
Press the two side brushes carefully onto their pins until they audibly engage. Take care to comply with the markings L and R.
In order to continue to achieve the best possible cleaning results, replace the roller brush with a new one after approx. 1 year.
If the door elements of the sliding door are held in place by magnets, the magnets will block the robot vacuum cleaner so that it cannot pass through the door.
Use the magnetic strip supplied to isolate this area or lock this area for cleaning in the app.
RX2 and RX3 – after troubleshooting, the fault message can be reset in the following ways:
Switch the robot vacuum cleaner off and on again (I/0 switch).
Press the Power button on the remote control.
Press the sensor control in the control field of the robot vacuum cleaner for at least 3 seconds.
If the fault persists, please contact us or book a repair appointment online.
