1. Check whether the power supply is normal, and whether there is power failure, line fuse blown, plug not plugged in or loose during the use of the hair dryer.
2. Check whether the line voltage at home is too low (below 187V). Low voltage may cause the hair dryer to stop running.
3. Turn off the machine and unplug it to check whether there are foreign bodies in the air inlet and outlet. Foreign bodies may cause the hair dryer to fail to operate.
4. If there is no working phenomenon in the working process, the hair dryer may be overheated due to the blockage of the air inlet or outlet of the hair dryer. When the hair dryer is overheated, it will automatically stop for protection.