Why is the Magotan's air conditioning not cooling?

[Milton]

Here are the specific reasons why the Magotan's air conditioning is not cooling: 1. Insufficient or low refrigerant: This may be caused by a minor refrigerant leak. You can observe this from the sight glass on the dryer. When the air conditioning is operating normally, if there are continuous bubbles in the sight glass, it indicates insufficient refrigerant. If obvious bubble flipping occurs, it indicates a severe shortage of refrigerant, and adding refrigerant will solve the problem. 2. Loose drive belt of the car's air conditioning compressor: If the drive belt is loose, the compressor will slip during operation, leading to reduced transmission efficiency and a decrease in compressor speed. This results in reduced delivery of compressed refrigerant, causing the car's air conditioning to not cool. If the compressor drive belt is too loose, it should be tightened. If it cannot be turned by hand, it means the drive belt is too tight and should be slightly loosened. If tightening is ineffective or the drive belt has cracks, aging, or other damage, a new drive belt should be replaced.