What's wrong with the air conditioner? How to solve

Air conditioning is not cool, which is often closely related to factors such as freon and power supply voltage. It is also possible that the snow water of the air conditioner is used up, or there is something wrong with the refrigeration mode of the air conditioner. Let's take a look at the common causes and solutions of cold air conditioning.

Air conditioning is not cool, which is often closely related to factors such as freon and power supply voltage. It is also possible that the snow water of the air conditioner is used up, or there is something wrong with the refrigeration mode of the air conditioner. Let's take a look at the common causes and solutions of cold air conditioning.

What's wrong with the air conditioner?

1. The reason is that freon is not enough (commonly known as "snow seed" is not enough)

When the ambient temperature is about 35 degrees Celsius, the low pressure of the air conditioner is 0.45MP, the high pressure is above 2.5MP, and the static pressure is1.1-1.2mp. This situation usually occurs in old air conditioners that have been used for three to four years. The air conditioner is not completely uncooled, but the cooling effect is reduced. This is because old air conditioners use freon as refrigerant, which will volatilize after long-term use. Therefore, users only need to add a little to the regular air conditioning maintenance point. In addition, the problems of freon leakage and the machine itself caused by improper installation are not ruled out.

2, the power supply voltage is not enough.

The normal starting voltage of air conditioner is 220V+- 10%. In China's power supply system with phase voltage of 220V and line voltage of 380V, almost all compressors above 200V can be started. Above 180V, 70-80% can be started, and above 160V, only some can be started. It is almost impossible to start the compressor below160V. According to experience, it is reliable to start the compressor above190V.

3. The air conditioning power is not enough.

The general selection principles are: refrigeration 150-250W/m2, heating 250-350W/m2. In addition, factors such as space height, horizontal orientation, sealing performance and resident population should be considered comprehensively.

4, the external environment temperature is too high.

There is a common saying that when the outdoor unit is above 43℃, it is difficult for most air conditioners to transfer indoor heat to the outside, resulting in no refrigeration.

5. The reason is that the air conditioner is not cleaned and maintained for a long time.

As 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 and lead to the reduction of the refrigeration effect of the air conditioner. Indoor machines are related to human health. If it is not cleaned for a long time, it will breed bacteria, pollute the air and make people sick.

6. The reason is that the copper pipe connecting the indoor unit and the outdoor unit is too long.

The maximum allowable length of air conditioning connecting pipes for 1 unit, 1.5-2 unit and 10m, and two or more units 15m shall not exceed 8m. The height difference between indoor unit and outdoor unit shall not exceed 5m.