Why does the air conditioning sometimes not cool?

[JuniperMarie]

Here are the reasons and solutions for the air conditioning not cooling: 1. Insufficient Freon (commonly known as lack of refrigerant): This reason for not cooling mostly occurs in air conditioners that have been used for three or four years. It is mostly a normal phenomenon, caused by the normal consumption of refrigerant due to prolonged use. However, this only manifests as the air conditioning not cooling as effectively as it did before, rather than completely failing to cool, because the pressure is just insufficient and not too far from the normal value. In this case, simply adding more refrigerant will solve the problem. 2. Insufficient power supply voltage: This phenomenon is relatively easy to occur. The manifestation of this problem is that the air conditioning cools normally when the voltage is stable, but when the voltage is unstable, it sometimes affects the cooling of the air conditioning.