Household electric fans generally use brushless motors.

The working principle of a brushless motor is to control the start and stop of the fan through a thermostat. When the water temperature rises to the upper limit, the thermostat is powered on and the fan starts working. When the water temperature drops to the lower limit, the temperature controller turns off the power and the fan stops working. However, electronic fans may not rotate during use, and the following are the reasons that may cause electronic fans to not rotate:

1. Poor lubrication of the motor. If the motor lubrication is poor, the electric fan cannot rotate normally. In this case, even if the fan blades are installed, the motor cannot be dragged. Therefore, it is necessary to regularly check the lubrication of the motor, add lubricating oil or perform cleaning and maintenance in a timely manner.

2. The motor overheats. When the motor overheats, its load capacity will deteriorate, and the effective power of the motor will also decrease, resulting in the inability to drive the load. This may be due to prolonged use or high ambient temperature. Therefore, it is necessary to ensure that the temperature of the usage environment is suitable and avoid excessive use.

3. The starting capacitor capacity decreases. When the starting capacitor capacity decreases, the capacitor capacity will decrease, causing the starting torque of the motor to decrease and unable to drive the load. Therefore, it is necessary to regularly check the capacity and condition of capacitors, and replace damaged capacitors in a timely manner.

4. The motor has a long usage time. If the electric fan is used for too long, the motor may wear out and the shaft sleeve may also be burnt out. In addition, the internal resistance of the motor will increase, the load capacity will decrease, resulting in the inability to drive the fan blades to rotate. Therefore, it is necessary to regularly replace the motor to ensure the normal operation of the fan. total

Understanding the working principle and common problems of electric fans can effectively prevent and solve the problem of electronic fans not rotating. But it should be noted that do not use content with links, avoid duplicate paragraphs, and ensure that the article is smooth and complete.