AC Repair Expert – Why Is My Air Conditioner Not Cooling?

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Analysis of several major causes of non-refrigeration of air conditioners and maintenance methods

There are many reasons why the air conditioner does not work. There are reasons for the air conditioner itself and also for the house. When I hear guests complain about the phrase “the air conditioner is not cooling”, I will know what they actually mean: “the air conditioner is turned on but the room is not cool”.

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Let’s take a look at what conditions can cause “the air conditioner is turned on but the room is not cool

There are many reasons why the air conditioner is not cooling and the cooling effect is not good, and the performance of the failure phenomenon is not the same. In the analysis, we must first distinguish between the cooling system failure and the electrical system failure. This article briefly introduces the knowledge about air conditioners not cooling.

Before analyzing the reasons why the air conditioner is not refrigerated, I think it is necessary for us to briefly understand the principle of air conditioner refrigeration. Here is just a simple and popular explanation of the principle of air conditioner refrigeration: The principle of air conditioner system — the compressor compresses a kind of low-pressure repair steam The refrigerant becomes a high-pressure and high-temperature vapor, and it becomes a high-pressure and low-temperature liquid after cooling through the cooling pipe of the condenser of the outdoor unit, and then flows to the indoor evaporator at a relatively stable pressure and flow rate through the control of certain devices repair.

And the high-pressure and low-temperature liquid refrigerant evaporates into vapor when it encounters the low-pressure environment in the evaporator, and this evaporation process will absorb a large amount of heat energy (commonly known as refrigeration), and the low-pressure vapor refrigerant will repair flow into the outdoor compression The machine is cooled in this way. In fact, this is what we describe in our books: The principle of air conditioner refrigeration is to use the compressor to make physical changes between the refrigerants to lead indoor hot air to the outside to reduce the indoor temperature.

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Air conditioners are popular household appliances in modern homes. Users seem to be very familiar with the use of air conditioners, but they are a bit at a loss when faced with air conditioner malfunctions. One of the most common problems with air conditioners is that they are not cooling. In the hot summer, if the air conditioner just rumblingly makes a cooling sound without cooling, do you feel annoyed? Today, we will talk about the repair reasons why the air conditioner is not cooling from the perspective of users.

There are many reasons why the air conditioner is not cooling. As a home appliance enthusiast and an air conditioner user, I have seen and heard various reasons why the air conditioner is not cooling. Below I will list a few from the perspective of use. This is the most common air conditioner uncooling situation that I have encountered. It is for the reference of users who have encountered this uncomfortable repair experience. Maybe you can still check in here and quickly find the real reason for the air conditioner uncooling and solve it!

Reason 1.  Not enough Freon

Reason 2.  The power supply voltage is not enough

Reason 3.  The power of the air conditioner is not enough to be not cooling

Reason 4.  The outside environment temperature is too high, which causes the air conditioner to be uncooled

Reason 5.  The air conditioner is not cleaned and maintained for a long time

Reason 6.  The copper pipe between the outdoor unit and the indoor unit is too long

The following is a detailed description of various common air conditioner reasons for non-refrigeration:

One of the reasons why the air conditioner is not cooling

Reason 1.  Not enough Freon

Solution: Add refrigerant to solve the repair problem of uncooled air conditioner

The reason for this non-refrigeration is mostly air conditioners that have been used for three or four years, and most of them are also a normal phenomenon, which is caused by the normal consumption of air conditioner refrigerants (that is, Freon or refrigerant we often call) after long-term use. , But this only shows that the air conditioner is not cooled enough compared with the normal situation before repair, and it will not be completely uncooled, because the pressure is not enough, and it will not be too far related to the normal value.

At this time, you only need to find a regular maintenance outlet to add That’s fine; of course, there are some types of snow leakage due to installation reasons or the machine itself. This is a common and relatively easy to find the cause, and it is easier to deal with this kind of repair problem. Check the pressure with a pressure gauge, and add it if it is not enough.

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Reason 2.  The power supply voltage is not enough

Solution: Keep the normal power supply voltage.

I have seen a user who always said that the air conditioner was not cool enough at home, but they checked it and found it normal. After checking it several times, no problem was found. Later, during an inspection, it was finally discovered that the power supply voltage there was unstable and often did not repair the normal voltage, especially during peak power consumption. This kind of problem is manifested as: when the voltage is normal, the air conditioner is also normal. When the voltage is unstable, it will affect the air conditioner sometimes not to cool. Of course, this kind of problem obviously cannot be solved by a skilled air conditioner repair expert. We must start with providing stable voltage to solve the problem.

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Reason 3.  The power of the air conditioner is not enough to be not cooling

Solution: Repair the cooling capacity required by the power space of the air conditioner

This is also one of the common repair reasons for non-refrigeration, but there are many reasons for such non-refrigeration, such as small-power air conditioner pipes in large-area rooms, and some although air conditioner power and room area seem to be the same It matches, because the room is relatively unclosed (such as wide-open doors and windows, etc.), or there are heat sources in the room (such as computers), of course, the glass room is also one of the heat sources, and so on.

This kind of situation is usually easy to overlook. If we can find the reason and repair it well, it will not only make the air conditioner cooler but also save electricity and extend the service life of the air conditioner. To solve this kind of problem, generally only can increase the number of air conditioners (to match the actual cooling area required to match the cooling area that the air conditioner power can manage); repair the conditions of the use environment; increase the airtightness of the use environment; repair the air conditioner Use the heating source in the environment and so on to solve the problem of uncooling.

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Reason 4.  The outside environment temperature is too high, which causes the air conditioner to be uncooled

Solution: Change the use environment of the outdoor unit (move away from the high-temperature environment or make the surrounding air of the outdoor unit easier to circulate)

This kind of non-cooling situation is common when our outdoor unit is installed in a relatively closed space or the temperature around the outdoor unit is too high. For example, in order to have a beautiful appearance, the outdoor unit is installed in a small hidden space or even multiple outdoor units are placed in a small space. It is extremely easy to cause the radiator to dissipate due to the lack of air circulation in the small space where the outdoor unit is located. The heat cannot flow away and the air conditioner is not cooling.

There is a common saying that when the outdoor temperature exceeds 43 degrees, it is difficult for most air conditioners to transfer the indoor heat through the radiator of the outdoor unit to the outdoor. The air conditioner is not cooling and you have to repair the unit.

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Reason 5.  The air conditioner is not cleaned and maintained for a long time

Solution: Clean and maintain the air conditioner so that the clean outdoor unit can dissipate heat later.

After buying an air conditioner, everyone thinks that you can enjoy it without any worries. In fact, we have to maintain the air conditioner frequently. There is one of them. Since the outdoor unit is installed outdoors, it is easy for everyone to ignore it. After a long time of use, the outdoor unit will attract a lot of dust, garbage, and other dirt on the radiator, so the heat dissipation effect of the radiator is poor and you must repair the AC.

The air conditioner is not cooling. In addition, long-term inattention to air conditioner maintenance will make the room air unsanitary, more likely to suffer from air conditioner diseases, increase power consumption, and shorten the service life of the air conditioner.

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Reason 6.  The copper pipe between the outdoor unit and the indoor unit is too long

Solution: Try to shorten the length of the copper pipe between the outdoor unit and the indoor unit of the air conditioner.

Some air conditioners need to be installed or installed improperly, which makes the ventilation pipe too long so that the low heat transfer efficiency will also cause the air conditioner to be uncooled.

Of course, there are many reasons why the air conditioner is not cooling, and there are other reasons such as the aging of the air conditioner compressor. We will cite the above common situations here, and I will not cite the others one by one for your reference. Just call us today to repair your air conditioner at the best price.