1. The threaded connection between the fan blade and the suspension body of the suspended electric fan is not tightened. Check the tightness and make repairs.
2. The rotating shaft of the ceiling fan hanging body rusts or the friction force becomes larger. Drop liquid lubricating oil along the boom. Wuxi Lilian Electronic Technology Co., Ltd. is a controller manufacturer, mainly engaged in the research, development, production and sales of various electrical controllers, industrial controllers and intelligent controllers.