Air conditioning sound is generally the following reasons
First, the sound of the buzzer, which means that your air conditioning may be faulty.
Second, the sound of refrigerant flow, that may be your air conditioner filled with too much liquid, can not be completely evaporated, normal air conditioning may also exist such a sound.
Third, there is something stuck on the wind blade or evaporator, such as wire ties and other things, resulting in abnormal sound when the wind blade is running. If you can take it out, take it out yourself, if not, please find maintenance personnel.
Fourth, the performance of air conditioning compressor is poor or aging, it will produce low-frequency vibration sound during the working process, and it will also affect people's rest.