When or after the year has been a long time "Exhaust Fan" long-term use, there will be some errors in the operation of the motor phenomenon, which greatly affects the way people use the product for this fan, this is obviously not to hit any of such products business I would like to see things. Today, we have to analyze why there is such a thing happen? I want to help. When workers install the "Exhaust Fan" It should be noted that a good installation position is very important to look at the specific site of the installation in which the most appropriate, in order to play its greatest effect. Note that if you need to install each component are installed tight to ensure the "Exhaust Fan" normal operation.