The rolling shutter automatically slides down after being pulled up, which may be due to a malfunction in the braking device. First, check the brake components at the top of the roller blind to see if they are loose, worn, or damaged. If the brake components are loose, you can tighten the relevant screws or adjust the position of the components.

If the brake components are worn or damaged, it may be necessary to replace them with new ones.

In addition, it is also possible that the spring tension of the roller blind is insufficient to effectively support the weight of the roller blind, and in this case, the spring may need to be replaced. Another possibility is that the installation of the roller blind is unbalanced, causing one side to experience greater force and slide down. It is necessary to readjust the installation position of the roller blind to maintain horizontal balance.