Four seas network: with the deepening of summer, the hot temperature is approaching gradually. The dog days are coming. Generally speaking, because the temperature in the south is much higher than that in the north, almost every family must have air conditioning. Air conditioning can make people have a comfortable environment in this hot weather. But frequent use of air conditioning for a long time will find that the air conditioning is not cooling slowly. So what are the reasons why the air conditioner doesn't cool? Let's take a look at it with Xiaobian~
What is a good air conditioner? Only its cooling effect, good air conditioner is a good air conditioner. If its effect is not good, aunt can't provide it for you after buying it home. The feeling of cold makes you unable to spend the hot summer. And the price of air conditioning is not low. If, let you calculate, you will find an air conditioner, and you can almost buy a room fan. Many people, buy home air conditioning, will appear, not refrigeration, often to this time people do not know what caused.
The reason why the air conditioner doesn't cool
One of the reasons why the air conditioner doesn't cool: insufficient Freon (commonly known as "insufficient snow")
When the ambient temperature is about 35 ℃, 1. Low pressure 0.45mp2, high pressure 2.5MP and above 3. Static pressure 1.1-1.2mp
This is a normal situation, usually in the use of three to four years of old air conditioning. The air conditioning does not completely not refrigerate, but the refrigeration effect has declined. This is because the old air conditioners use freon as refrigerant, which will evaporate after a long time. So users just need to add a little to the regular air conditioning maintenance point. In addition, the problem of Freon leakage and machine itself caused by improper installation is not ruled out.
The second reason why the air conditioner doesn't cool: the power supply voltage is not enough
The normal starting voltage of air conditioner is 220V + - 10%. In the power supply system with phase voltage of 220V and line voltage of 380V, almost all compressors above 200V can be started. When the voltage is above 180V, 70-80% can be started. When the voltage is above 160V, only a few can be started. I did the experiment myself. Less than 160V is almost impossible to start. According to experience, when the voltage is above 190V, the starting voltage of compressor is reliable.
The third reason why the air conditioner doesn't cool: the power of the air conditioner is not enough
The general selection principles are: 150-250w / m2 for refrigeration and 250-350w / m2 for heating. In addition, factors such as space height, level orientation, sealing performance and residential population need to be considered comprehensively.
The fourth reason why the air conditioner doesn't cool: the external environment temperature is too high
There is a common saying: when the outdoor unit is in the environment of 43 & deg; or above, most air conditioners are difficult to transfer the indoor heat to the outdoor, resulting in no refrigeration.
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The fifth reason why the air conditioner doesn't cool: the air conditioner doesn't clean and maintain for a long time
If you want the air conditioner to operate normally without affecting human health, you need to extend its service life as much as possible. Obviously, it is impossible to ignore it as soon as you buy it and install it. Because the outdoor unit is exposed outdoors, it is easy to absorb dust and sundries. If it is not cleaned for a long time, it will affect the heat dissipation performance of the machine, resulting in the reduction of the cooling effect of the air conditioner. The indoor machine is related to human health. If it is not clean for a long time, it will breed bacteria, pollute the air and make people sick.
The sixth reason why the air conditioner doesn't cool: the copper pipe connecting the indoor unit and the outdoor unit is too long
The maximum allowable length of the connecting pipeline of air conditioner shall not exceed 8m, 10m and 15m for 1.5-2. The height difference between indoor and outdoor units shall not exceed 5m.
Although air conditioning can help people to spend the hot summer when they are at home, they will not feel very hot, but it must be remembered that when using air conditioning, the air-conditioning should not be too low, not in order to pursue cool, but the temperature drop is very low, so it is easy to catch a cold and continue. When you are in a cool house, it is usually very hot outside. This kind of transportation The temperature of the fork is easy to catch a cold. Moreover, it's easy to get some diseases by blowing the air conditioner for a long time, so although the air conditioner has many advantages, it must be used in an appropriate amount, not to overdo it, not to mention turning on the air conditioner every day throughout the summer.