What are the reasons why the air conditioner is not cooling?

What are the reasons why the air conditioner is not cooling? In summer, people turn on the air conditioner mainly to get a cool feeling, but they did not find that the air conditioner has not been cold for a long time. The air conditioner is not cooling. What are the reasons why the air conditioner is not cooling? Many air conditioners are not cooling, because it is faulty Problem, so it is necessary to repair it, what are the ways to repair the air conditioner? 1. What are the reasons for air conditioning not cooling 　　 1. Refrigerant Freon The most important reason for the cooling of air conditioners is freon. When the air conditioner motor is turned on, it will turn on the transport function of freon. Freon is not enough. This may cause coldness. Generally speaking, the air conditioner is normal after three to four years of use. Situation, some people find that the air conditioning in the home is not as good as before, which is also the reason for this. 　　Solution: Freon is usually included with the purchase of air conditioners. At this time, you can add it yourself. If not, then it is better to find a professional master to help you. But don’t overuse Freon as this will have a counter-productive effect. If it is the old-fashioned air conditioner, Freon is generally used as the refrigerant, and Freon will evaporate after long-term use. So you only need to add Freon to use it again. In addition, it is not ruled out that the leakage of freon caused by improper installation of the air conditioner during installation. 　　 2. No cleaning for a long time Sometimes the air conditioner is not cleaned for a long time, it may also lead to cooling effect, and the air conditioner also needs cleaning and maintenance. We know that the air conditioner outdoor unit is exposed to the outdoor for a long time, and it is easy to absorb dust and debris. If it is not cleaned for a long time, this way It will also affect the heat dissipation performance of the machine, leading to the cooling effect of the air conditioner. Indoor unit is related to human health. If it is not cleaned for a long time, it is easy to breed bacteria to pollute the air and make people sick. The filter of the indoor unit will be clogged with dust if it is not cleaned for a long time, resulting in the air conditioner not cooling. 　　 3. Voltage instability Sometimes the voltage instability also brings uncooling effect to your air conditioner. The normal starting voltage of the air conditioner is 220V, while in our power supply system with phase voltage 220V and line voltage 380V, almost all compressors above 200V are Can start. When it is above 180V, 70-80% can be started. When it is above 160V, only some can be started. 　　 4. Air conditioning frequency is not enough The reason why the air conditioner is not cooling may be that the frequency of the air conditioner is not enough. Generally, the use area of ​​1 horse air conditioner is within 10 square meters. For a house of 10-18 square meters, you can consider choosing a 1.5 horse air conditioner. To choose a large frequency air conditioner. Sometimes the outside temperature is too high will also cause the cooling effect of the air conditioner. 　Second, what are the ways to repair the air conditioner 1. When the air conditioner can run, you can first check whether there is a problem with the connection head of the indoor unit and outdoor unit of the air conditioner. At the same time, watch the air conditioner condenser fins for dust, and then observe the indoor unit and outdoor of the air conditioner. Whether the fan of the machine is running normally. 2. After that, check whether the suction pipe of the compressor is dew condensation, whether the filter is frosted, whether the capillaries are blocked, etc. At the same time, you can also watch the air conditioning fault code displayed on the air conditioner display screen, and judge it according to the air conditioner fault code Air conditioning malfunction. 　　 3. In addition to watching the failure of the air conditioner, you can also check it by listening. First of all, we can listen to whether the sound of the fan of the outdoor unit and the indoor unit of the air conditioner is running smoothly. Is there any friction noise or abnormal noise caused by resonance during the operation of the compressor? Then listen to the sound of the condensate flowing as it flows. 4. After listening and watching, you can also check it by touch. The touch is mainly to detect whether the temperature of each component during the operation of the air conditioner is the normal temperature generated during operation, and you can judge the fault of the air conditioner according to this. It is not caused by too high a temperature. 5. After watching, listening, and touching, you can also use the way of smelling. The smelling is mainly to smell whether the inner and outer coils of the air conditioner compressor have a burning smell due to the temperature rise of the compressor. At the same time, ask the relay, circuit board, power Is there any burning smell in the module? The way of smelling is also to confirm whether a certain part of the air conditioner is burnt due to high temperature during the use of the air conditioner. 6. When the air conditioner is not cooling, the air conditioner lacks refrigerant or the air conditioner has not been cleaned for a long time, and the heat dissipation effect of the air conditioner's heat sink is poor. At this time, we can first check that the air conditioner refrigerant is not enough because the air conditioner The use time is too long or the refrigerant is insufficient due to refrigerant leakage. 　　What are the reasons why the air conditioner is not cooling? When determining that the air conditioner is not cooling, you should carefully find the reason for it and see what the specific reasons are. What are the ways to repair the air conditioner? There are many ways to repair the air conditioner. For ordinary people, it is the most important thing to find a professional master to repair.