If the Xiaomi Smart Standing Air Circulation Fan button fails, please refer to the following steps:
1. First, check whether the device is powered on normally;
2. Check whether the Child lock function is turned on;
3. Make sure the fan's power cord is firmly connected and not loose from the socket;
4. Reconnect the power after the power is turned off;
5. Check whether the accumulation of dust, oil, or moisture causes the buttons to have poor contact and not work properly;
6. Gently wipe the button area to remove dust and dirt;
7. Check if the buttons are stuck by foreign objects or physically damaged;
8. Try using the Mi Home/Xiaomi Home APP to control the fan;
9. If the problem still exists, please apply for after-sales inspection.