Why does the Xiaomi Robot Vacuum sometimes fall off cliffs?
If your Xiaomi Robot Vacuum occasionally falls from elevated surfaces such as stairs or platforms, it is due to incorrect detection by the ground sensor. The main causes are dark or highly reflective floor edges, sensor contamination, or a delayed response of the infrared module.
For your reference, please follow these troubleshooting steps:
1. Observe whether the robot vacuum falls while moving forward or backward, as the travel direction affects the sensor’s reaction time.
2. Check the floor edge: dark carpets, metallic finishes, or glossy materials can confuse the infrared beam, making the surface appear flat. Avoid using the device near such areas.
3. Inspect and clean the cliff sensors at the bottom of the robot vacuum with a soft, dry cloth to remove dust or moisture that could distort readings.
If the robot vacuum continues to fall or shows repeated detection errors, contact Xiaomi after-sales service for professional inspection or replacement of the ground detection sensor.
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