Why does the Xiaomi Smart Air Fryer 4.5L has a malfunction when it is turned on?

If the device has a malfunction when it is turned on, please refer to the following troubleshooting steps:
1. Confirm whether the power cord plug of the air fryer is fully inserted into the grounded electrical outlet;
2. After turning on the power, confirm whether the product has a beep sound and whether there is a display on the LCD screen. If there is a beep sound but no display, it indicates that the product LCD screen is faulty. If there is no beep or display, it indicates that the product is faulty. If it operates automatically but the display screen shows nothing, it indicates an internal wiring fault in the product. 
If the above faults exist, please contact the after-sales for inspection.