Is it still cold when the air conditioning temperature reaches 29 degrees and 30 degrees in summer? What happened?

Usually this is normal, because it should be compared according to the outdoor temperature. If the weather is very hot, it should be appropriate to adjust it to 28 degrees. If the outdoor temperature is very low, it may be very cold. Maybe the air conditioner was moved once recently and refrigerant was added. If refrigerant is added, the refrigeration effect of air conditioner is obviously better than before.

Specifically, it depends on whether the outdoor compressor works when the hot air is transferred out. If it doesn't work, it is mostly the compressor thermal protection shutdown. If the compressor works, the fault is mostly a four-way valve. You should contact the after-sales department for maintenance in time.

Extended data:

How much is the air conditioner suitable? ISO recommended values are 23℃~26℃ in summer and 20℃~24℃ in winter. However, in different countries, there are different regulations or recognized standards, although it is not mandatory.

The air-conditioning temperature in the United States and China is relatively low, and the adjustment of air-conditioning temperature is relatively random. It is also expressly stipulated in the Mainland of China that the requirement of "the State Council's Decision on Strengthening Energy Conservation" is that the indoor air-conditioning temperature should not be lower than 26℃ in summer and the indoor air-conditioning heating temperature should not be higher than 20℃ in winter.

Since 2005, Japan's Ministry of Environment has proposed that setting the air conditioner at 28℃ in summer is not only comfortable, but also energy saving and emission reduction. So the air conditioning temperature in most offices is fixed at 28℃. However, some scientific studies have pointed out that air conditioning at 28℃ can save energy and reduce emissions, but it makes people feel uncomfortable, because 25℃ is the temperature that human beings feel comfortable.