1. It is a normal phenomenon. The Xiaomi Smart Air Fryer 5.5L adopts infrared tube heating, which serves both heating and lighting functions. The infrared tube cannot be manually turned on or off, so it is automatically controlled by the program. It turns on during the heating process and turns off after the temperature reaches the set value;
2. If the light-wave tube does not light continuously, please check whether the food has been heated, otherwise, it means that the tube is damaged or other components are faulty. Please contact the after-sales for inspection.