1. The thermostat is normal. The water temperature of the water pipes is the same, but the fan doesn't turn. Maybe the water temperature sensor is broken.
The fan itself is broken.
3. The fan power cord is not in good contact.
4. Water tank is short of water
5. Under normal circumstances, when the water temperature reaches a given temperature, the thermostat opens and the water in the water tank circulates. When the temperature of the engine reaches a certain temperature, the electronic fan of the water tank will rotate through the sensor.
6. When the temperature is low, the fan is rarely started when the vehicle is driving.
7. If you don't feel normal, you can try it within 2500 rpm. Generally, the fan will rotate in about 10 minutes.
8. It is basically judged that the vehicle is equipped with a thermostat, and there should be no problem if the water temperature is not high or the pot does not boil.
9. It is best to check at the service station, and then the detector will measure the water temperature.