Robot vacuum reports E16; loud fan noise followed by shutdown.

Safety first: Turn the robot OFF and allow it to cool for at least 20 minutes before touching the motor area.

• 1. Clean filters and bin: Empty the dust bin and clean or replace the filter as described in the filter maintenance steps.
• 2. Clear vents: Inspect all air intake and exhaust vents on the robot. Use a soft brush or vacuum to remove dust buildup.
• 3. Check for obstructions: Remove the main brush and inspect the suction channel for blockages.
• 4. Test after cooling: Once the robot is cool and cleaned, start a short cleaning cycle and listen for abnormal grinding or squealing from the fan.
• 5. Persistent E16 or loud mechanical noise: The suction motor bearings may be worn, causing overheating. Motor replacement should be performed by a qualified technician.