Why does the home air conditioner feel as cold as it used to be?

1. During refrigeration, the external condensate is reduced or frosted, and the temperature of the air outlet of the internal machine cannot be lowered, which is a symptom of insufficient refrigerant.

2. The air-conditioning compressor burns out and is caused by the continuous use of the air-conditioner for too long, wear or quality problems of the machine itself.

3. The air conditioner has not been maintained for a long time. If the air conditioner is not cleaned and maintained for a long time, the long-term ignorance of the air conditioner maintenance will make the room air unhygienic, the air outlet will be blocked, and the cold air will not be able to be played; It is also susceptible to air conditioning disease, increased power consumption, shortening the service life of air conditioners, etc.

4. Other parts are damaged, which will also cause the air conditioner to not be refrigerated, and the vulnerable parts include capacitors, temperature sensing heads, circuit boards, etc., which need to be tested by professional technicians.

It may be time to change the Buddha, the air conditioner is the same as the refrigerator, and there may be a loss of Buddha after a long time, find a professional to take a look!

The biggest possibility is that the outdoor unit has not been cleaned for a long time, resulting in poor heat dissipation of the outdoor unit; The second is that the fluorine is not enough, and then the main engine (outdoor unit) compressor is used for too long and is slightly worn, resulting in insufficient pressure difference between high and low pressure. In addition, check whether your indoor unit air network is dirty and blocked the air, whether the indoor fan fan blades are too dirty, and whether the indoor unit evaporation pipe is too dirty, resulting in poor heat exchange. These can be done by yourself and do not need to be repaired by professionals.

The reasons why the air conditioner is not cool are: not enough freon, not enough power, etc.

1. If the service life of the air conditioner is relatively long, the freon in the air conditioner has been consumed, and it can no longer support the refrigeration work of the air conditioner, and the air conditioner will suddenly appear not cool when it is used, so you need to contact the air conditioning after-sales service or professional personnel as soon as possible to add the freon.

2. The power is not enough to air conditioner is not cool, the area of the room corresponding to the number of air conditioners is more appropriate, if in summer, a horse air conditioner is used in our 100 square living room, then, the air conditioner will definitely not be cold.

This is because an air conditioner like a horse can only be used for 15 to 25 square rooms, and if the room is too large, it will not be cool if you use a low-power air conditioner for cooling. Therefore, it is necessary to choose the right power air conditioner products to work according to the specific room area.

Refrigeration settings: From the perspective of the summer air conditioner start-up index, 30-33 belongs to level 4, and 70% of people need to turn it on; 33-35 is class 5, 90% of people need to turn it on. After turning on the air conditioner, pay attention to adjust the indoor and outdoor temperature difference, the room temperature should be set at about 24 -18, and the indoor and outdoor temperature difference should not exceed 7.

When the air conditioner is cooling, the temperature is set to about 26-28, in this case, not only the human body feels more comfortable, but also conducive to energy saving. When the air conditioner is cooling, do not set too low temperature, when the room temperature is adjusted to 26-27 degrees, the cooling load can be reduced by more than 8%.

The room temperature is kept at 28-29 degrees, the humidity is kept at 50-60%, and people do not feel stuffy and do not sweat, which belongs to the comfort range. When people are sleeping, the metabolic amount is reduced by 30-50%, and the air conditioner can be set in the sleep switch and set the temperature 1 degree higher, which can save 10% of electricity.

First of all, check the air conditioner settings, whether the air conditioner temperature is set high, and whether the operation mode is refrigeration mode.

When the air conditioner is cooling, the cooling mode should be set, the icon is a snowflake icon, and the temperature should be set a few degrees lower than the room temperature.

Secondly, check whether the internal and external units of the air conditioner are dirty and blocked, and clean them if they are dirty.

Test again whether the refrigerant is sufficient, and if it is insufficient, make up the amount.

If you don't understand anything, you can also consult us.

It may be that the indoor insulation is not good. The temperature can't go down.

First, the freon is not enough (also known as "refrigerant" is not enough).

This is a normal situation, generally appears in the use of three to four years of old air conditioners, air conditioning is not completely not refrigerated, but the effect of refrigeration is not good enough, this is because the old air conditioners are used as freon refrigerant, long-term use will volatilize, in addition to improper installation caused by freon leakage and the machine itself problems.

Solution: Replenishing refrigerant can solve the problem of air conditioning not cooling.

Second, the voltage of the power supply is not enough.

The power supply voltage is unstable, and it often fails to reach the normal voltage, especially during the peak of electricity consumption. , the problem must be solved by providing a stable voltage.

Solution: Maintain the normal power supply voltage or choose an inverter air conditioner.

Third, the power of the air conditioner is not enough.

This is also one of the common reasons for not refrigerating, but there are many reasons for this kind of non-refrigeration, such as: small power air conditioning pipes in a large area of the room, and some although the air conditioning power and the room area seem to match, but because the room is relatively unsealed (such as doors and windows are wide open, etc.), or there is a heat source in the room (such as a lot of computers) of course, the glass room is also one of the heat sources, and so on.

Solution: Make the power of the air conditioner and the refrigeration capacity required by the space want to match; change the conditions of the environment in which it will be used; Increase the airtightness of the use environment; Reduce the heating source in the environment where the air conditioner is used to solve the problem of non-cooling.

Fourth, the external environment temperature is too high.

This kind of non-refrigeration situation is common in our outdoor unit installed in a relatively closed space or the temperature around the outdoor unit is too high, so it is extremely easy to cause the heat emitted by the radiator to flow away due to the lack of air circulation in the small space where the outdoor unit is located, so that the air conditioner is not refrigerated; There is also a common saying that when the outdoor temperature exceeds 43 degrees, it is difficult for most air conditioners to transfer indoor heat to the outside through the radiator of the outdoor unit, which will also cause the air conditioner not to refrigerate.

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), and pay attention to choosing the correct and reasonable location when installing the air conditioner.

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

Because the outdoor unit is installed outdoors, after a long time of use, the radiator will absorb a lot of dust, garbage and other dirt, so that the heat dissipation effect of the radiator is poor and the air conditioner is not cooled.

Solution: Clean and maintain the air conditioner frequently.

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

Some air conditioners are too long due to the need for installation or unreasonable installation, so that the heat transfer efficiency is low and will also cause the air conditioner not to refrigerate.

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

It may be that there is an air leak in the cold circulation system.

To check whether the air conditioner can operate normally, including the indoor unit and the outdoor unit, especially to check the compressor of the outdoor unit, if it is impossible to judge the cause of its failure, it is recommended to find a professional maintenance personnel to check and repair the air conditioner in time.

If it works properly, it may be due to serious dust accumulation in parts such as the filter, disassemble the filter and clean it with clean water and a soft brush. Use a special cleaning solvent to clean the surface of the evaporator.

It may also be caused by insufficient refrigerant, if it has not been added for more than 3 years, you need to ask the maintenance personnel to check the replenishment hall friend charge, and check whether there is any air leakage by the way.

Precautions for the use of air conditioners:

1. Too much dust accumulation on the outdoor radiator of the air conditioner will reduce the efficiency, and the outdoor radiator should be checked and cleaned regularly (after the power failure, it can be blown with compressed air).

2. The outdoor unit of the split air conditioner should not be inserted with sticks and other objects, otherwise the fan will be stuck or damaged.

3. When you feel that the use of the air conditioner is not ideal, you should consult the instruction manual, analyze whether it is caused by improper use, and correct it after finding out the cause.

4. When the fault is found and cannot be dealt with by itself, you can find a professional maintenance technician in the original installation department to solve the blind decision, grind the ear or contact the local service personnel of the brand company, and do not repair it by yourself or find non-professional overhaul.

1.The air filter is clogged, causing cooling to be too slow. Clean the filter in time.

2.The temperature of the temperature adjustment switch is not appropriate.

3.There is an obstacle in front of the outdoor unit, which affects the normal operation of the air conditioner. Clean it out or install the air conditioner in an unobstructed open area.

4.The doors and windows of the room were not closed, and the interior was not closed. Do not open and close doors and windows frequently, and keep the air-conditioned room tightly closed.

5.There is strong direct sunlight coming in, or shining on the air conditioner. It is advisable to install curtains in the room and close the curtains when the sun is shining.

6.The air volume is set at the "low wind" position, and the air conditioner runs at low speed. To achieve the cooling effect, try to increase the air volume as much as possible.

7.There are too many people in the house, resulting in too much heat and it is impossible to adjust the temperature quickly for a while. It's common sense not to have too many people in an air-conditioned room.

8.The indoor area is too large, and the refrigeration capacity of the Changhuai device before the air conditioner is too small and the fast liquid cannot meet the actual use needs. This problem should be paid attention to when purchasing, and you must choose the right air conditioner according to the room area. For example, 1 hp air conditioner corresponds to 12 15 square meters.

9.Electric heating appliances and other heating elements are being used in the house, which causes the power of the air conditioner to be insufficient to cause the air conditioner to not cool or the cooling effect is reduced. Try not to use high-power appliances at the same time.

10.The voltage supplied is insufficient, and if the voltage is constantly unstable, it is recommended to install a voltage regulator.

There are many reasons why an air conditioner doesn't feel cold after two or three years of use, and here are some of the common ones:

Insufficient freon: The cooling effect of an air conditioner is related to the quantity and quality of freon. If the freon inside the air conditioner is not enough, it will lead to a decrease in the cooling effect, or even no refrigeration.

Aging of air conditioner: The service life of the air conditioner is generally 10 to 15 years, if the air conditioner is used for too long, the internal components may be aged or damaged, resulting in a decrease in the cooling effect.

Air filter refers to the dust accumulation of the air filter: too much dust on the air Xinxiao filter of the air conditioner will also affect the refrigeration effect, because the air filter is used to filter indoor air, if there is too much dust, it will lead to poor ventilation, which will affect the refrigeration effect of the air conditioner.

Poor heat dissipation of the outdoor unit: The outdoor unit of the air conditioner is exposed to the outdoor environment for a long time, and after a long period of use, a large amount of dust and dirt may accumulate on the radiator, resulting in poor heat dissipation, which will affect the cooling effect of the air conditioner.

Unstable voltage or insufficient power: If the voltage of the air conditioner is unstable or the power is insufficient, it will cause the compressor to run abnormally, which will affect the refrigeration effect.

The above are some common reasons, if the air conditioner is not cooling, it is recommended to find a professional maintenance personnel for inspection and repair.

Answer: The subject's air conditioner has been used for two or three years, and the refrigeration effect is not good, and usually this situation is accompanied by errors**. I have encountered many of these situations due to the following reasons.

1. Abnormal refrigerant. Generally, it is the lack of pressure of the refrigerant, that is, we often say that the freon is not enough; It is usually leaking, and as for the leakage, many times it is the leakage of the copper pipe at the outer unit connection and in the middle. We can observe the phenomenon of the connection between the external machine and the copper pipe.

For example, if there is severe frost (freezing) in the place where there is a thin pipe (liquid pipe) valve, it means that the fluoride deficiency is very serious.

Second, the air inlet of the internal machine is very dirty and the evaporator is dirty. Usually the air inlet filter is very dirty, and if you haven't cleaned it for two or three years, then the problem is basically certain. In addition, the evaporator of the internal machine can be observed at the air outlet, and if there is a lot of dirt between the fins of the evaporator, it should also be cleaned.

3. Check whether there are any obstructions around the outside unit that affect the heat dissipation of the air conditioner. A lot of times, we like to pile things up there at home, thinking it's a nice corner. If the heat dissipation of the external unit is affected, the cooling effect of the indoor unit will also be reduced.

Summary: If the air conditioner at home has poor cooling effect after two or three years, it is necessary to check it according to the situation. Usually, after using the air conditioner, you must have the habit of cleaning the filter; Then pay attention to the fact that debris must not be stacked around the outdoor unit. Of course, if you have seen all of these for yourself and the problem exists, then you can see if there is a lack of freon.

There are also symptoms of freon deficiency in the system, and there is also a standard for fluoride, so pay attention to do your homework in advance and don't be misled by some people.

Air conditioning refrigeration The heating effect is related to the air output, so as long as the air outlet of the air conditioner is not affected, the air conditioning effect can be improved, and the way is to clean the air conditioning filter. Open the panel of the indoor unit, you will often find that a thick layer of dust or flocculent has accumulated on the filter screen, which blocks the air from being sucked into the indoor unit from the air inlet for heat exchange like a quilt, and the air intake volume is less, and the cold air volume naturally sent out is also less. In this way, it takes a long time to reach the set temperature, and the use effect is poor.

We only need to remove the filter and clean it, dry it and reinstall it in the indoor unit, and the operation effect will be as satisfactory as if we bought it newly.