Public maintenance funds can only be used to maintain the safety of public equipment and facilities. Although the blinds of your air-conditioned seat were pre-installed by the developer, they still belong to your private property. It's like the doors and windows of your home. They are all provided by developers, but they are not public facilities. Therefore, it is impossible to repair blinds with public maintenance funds. Products delivered to the owner and belonging to the owner's own use have a warranty period. Generally speaking, the warranty period will not exceed 1 year. The service life of your shutter is 1 year and 2 months ago, which has exceeded the warranty period. It is normal that the property is no longer responsible for maintenance.

You can propose a solution to this problem to the property management company: if the property management company doesn't send someone to repair it, you might as well take down this shutter. Avoid future dangers.