What are the reasons for the flash and suspected explosion sound at the air inlet of Xiaomi Compact Hair Dryer H101?

H101 twofold protection:
1. The thermostat overheating jumped off, and the heating wire stopped working (not heating). The machine starts blowing cold air, the machine cools down and then heats up again to work;
(1). From the outlet blower inside the red after the flash phenomenon: Trigger the thermostat closure moment produces a tiny bright light, belongs to the normal thermostat work produced by the phenomenon;
(2). Strange sound: Sound for the thermostat works to disconnect the click sound, which belongs to the normal work phenomenon.

2. The fuse is blown.

Reasons for trigger protection:

1. Air inlet network blockage of accumulated ash: Wipe clean with a suitable toothbrush or towel, invalid normal after-sales treatment;
2. Suction hair: Winding fan blades or motors leads to stalling or speed reduction, and the wind volume is reduced resulting in triggering the thermostat. You can apply for after-sales treatment.