What to do if the Xiaomi Robot Vacuum E5 produces unusual noises during cleaning?

The reasons for unusual noises during cleaning with the Xiaomi Robot Vacuum E5 are as follows:
1. To ensure effective cleaning, the main unit is equipped with a larger suction fan, resulting in slightly louder noise. You can select the silent mode during cleaning for reduced noise levels;
2. When the main unit is operating on smooth tile floors or wooden surfaces, there will be a slight "hissing" sound caused by friction between the bottom scraper and the floor. Such sounds do not affect the normal operation of the device;
3. The side brush becomes entangled with hair or foreign objects.
Please check the solution for unusual noises during cleaning with the Xiaomi Robot Vacuum E5:
Please check if the side brush is entangled with any foreign objects. If so, please clean it.