If the cooling suit fan is broken, check that the power cable is tightly connected. If the power cable is not faulty, open the fan and check whether any blade is worn or damaged.
If there is no problem with the blade, you can check whether the fan motor is running normally and the motor needs to be replaced.
If there is no problem with the fan motor and blades, you can check whether the controller is damaged and needs to be replaced. During maintenance, it is necessary to pay attention to power off to avoid safety accidents. It is recommended to find a professional for maintenance to ensure safety and maintenance quality.