Why do I get a message to check the filter?

Articles in this section

• Why do I get a message to check the filter?
• The path to a zone is blocked (2013)
• My vacuum cleaner robot is displayed as offline. What could be the reason?
• The Base light on my VR300 robot vacuum cleaner comes on, but the Base button is greyed out in the Kobold Robot app. How do I send the VR300 back to the base station using the app?
• The display on the VR300 robot vacuum cleaner is flashing red and the device won't clean any more. Why is this?
• Why is the Wi-Fi light on my VR300 robot vacuum flashing?
• I've unpacked the VR300 robot vacuum cleaner and now it won't switch on. Is it broken?
• The Kobold Robot app is showing the error “clear path” but there is nothing in the way. What does that mean?
• Why does the error message "Software does not fit the model" appear when updating my robot?
• The robot won't go into hot-spot mode. How can I integrate it with the app?