Robot vacuum leaves fine dust on the floor even though the bin fills with larger debris.

Safety first: Turn the robot OFF and remove the dust bin.

• Inspect HEPA filter: Ensure it is present, undamaged, and installed in the correct orientation.
• Check bin for cracks: Look for damage that could allow unfiltered air to bypass the filter.
• Inspect gaskets: Check rubber seals around the filter frame and bin; replace if deformed or torn.

Solution: Replace the HEPA filter and, if necessary, the dust bin assembly.