1. First, record the specific reasons for not turning on the air conditioner, such as improper temperature setting of the air conditioner and damage to the air conditioner equipment.

2. Then call the complaint number to explain to the librarian why the air conditioner is not turned on, and ask the librarian to deal with it in time.

Secondly, if the librarian fails to deal with it in time, he can complain to the higher authorities, such as the education department and the cultural department.

Finally, if the superior department still can't solve it, you can complain to the consumer association and the market supervision department for help.