Introduction to the causes and solutions of the sudden non cooling of the air conditioner

1. The voltage of the power supply is not enough.

Solution: Maintain a normal supply voltage.

2. The power of the air conditioner is not enough.

Solution: Make the power space of the air conditioner and the cooling capacity required to match it.

3. The external ambient temperature is too high.

Solution: Change the environment in which the outdoor unit is used (move away from the high temperature environment or make the surrounding air of the outdoor unit more easily circulated).

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

Solution: Minimize the length of the copper tube between the outdoor unit and the indoor unit of the air conditioner.

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

Solution: Clean and maintain the air conditioner to make the clean outdoor unit more tolerant of heat dissipation.

6. Freon is not enough (commonly known as not enough refrigerant).

Solution: Supplementing freon can solve the problem of air conditioning not cooling.

For details, please call us or make an appointment for maintenance.

Freon is not enough (commonly known as "refrigerant" is not enough).

When the ambient temperature is about 35 degrees Celsius, 1, low pressure and high pressure 3, static pressure. This is a normal situation, usually in the case of an old air conditioner that has been used for three to four years. The air conditioner did not completely stop cooling, but the effect of cooling decreased.

This is because old air conditioners use freon as a 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, it is not excluded that improper installation can cause freon leakage and problems with the machine itself.

Do not wash and maintain for a long time.

If you want the air conditioner to operate normally and not affect human health, but also to prolong the life as much as possible, obviously, it is impossible to leave it alone as soon as you buy it and install it. Because the outdoor unit is exposed to the outdoors, it is easy to absorb dust and debris, and 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 unit is related to the health of the human body, and if it is not cleaned for a long time, it will breed bacteria, pollute the air, and make people sick.

The supply voltage is not enough.

The normal starting voltage of the air conditioner is 220 volts plus or minus 10%. In China's power supply system with a phase voltage of 220 volts and a line voltage of 380 volts, almost all compressors above 200 volts can be started. At 180 volts or more, 70-80 can be started, and above 160 volts, only a few can be activated.

I've done it myself. Below 160 volts it is almost impossible to start. As a rule of thumb, the compressor starting voltage is more reliable above 190 volts.

The air conditioning was not powerful enough.

The selection principle of general air conditioning is: 150-250 watts square meters for cooling, 250-350 watts for heating, in addition to comprehensive consideration of space height, level orientation, sealing performance and residential population and other factors. Any one of these factors will have a certain impact on its cooling effect.

The ambient temperature is too high.

There is a common saying: when the outdoor unit is in an environment above 43°, most air conditioners are difficult to transfer the heat from the indoor to the outside, resulting in no refrigeration.

The copper tube connecting the indoor unit and the outdoor unit is too long.

The allowable length of the connecting pipe of the air conditioner shall not exceed 8 meters for one horse, 10 meters for horses, and 15 meters for more than 2 horses. The height difference between indoor and outdoor units shall not exceed 5 meters.

In the hot summer, we will use air conditioning to improve the indoor temperature, so that we are in a more comfortable environment, but when using air conditioning, there will be a variety of problems and failures, which will make us very headaches, for example, the air conditioner suddenly appears not refrigerated, so when this fault appears, how should we solve it? The following is a detailed introduction to the reasons why the air conditioner does not refrigerate and the specific solutions.

Reasons why the air conditioner is not cooling.

First, the household voltage is not enough, the power supply voltage is abnormal, sometimes high and sometimes low

In some large factories or companies, ** air conditioning is generally used for refrigeration, and then refrigeration in different areas is realized through ventilation fans, which will occur here; When the voltage is insufficient, the air conditioner will stop suddenly and will not refrigerate at all; Or the cold air of the air conditioner is hot and cold. Many friends can't find out the reason for this kind of non-refrigeration, and the maintenance master also dismantles and installs the air conditioner, but it still doesn't work. This situation should be considered to be caused by voltage instability.

Solution: Ensure that the voltage at home is stable, especially during the peak period of electricity consumption, buy a higher resistor and voltmeter to monitor the voltage situation at all times.

Reasons why the air conditioner is not cooling.

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

Some users think that the noise of the outdoor unit is too loud, so when installing, the outdoor unit is placed far away, which increases the distance of cooling transmission, resulting in the air conditioner due to the demand of the device or the unreasonable installation, so that the ventilation pipe passes, and the heat transfer efficiency is low, resulting in poor air conditioning refrigeration effect. In addition, the copper pipe transition also increases the cost of installation, which is not cost-effective.

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

Reasons why the air conditioner is not cooling.

3. Refrigerant (freon) is not enough

Air conditioners consume freon in the refrigeration process, generally after three or four years of use, freon will be consumed, if you find that the refrigeration effect of air conditioning in your home is not obvious or not as good as before, it is most likely caused by this reason.

Solution: When buying an air conditioner, freon will generally be given, if you will, you can add it yourself, if not, it is best to call ** please intercooler HVAC after-sales technician to add. Be careful not to overuse freon during the addition process, as it may backfire.

If you are using the air conditioner, there is a sudden phenomenon of not refrigerating, then you can follow the method that has become the introduction of you to investigate and solve one by one, if you can personally repair it is the best, but if you don't know how to operate, you must not be too demanding, otherwise it will bring more serious damage to the air conditioner because of some improper operation, at this time we can ask professional maintenance personnel to repair.

You can get it for free

1. It may be that the remote control of the air conditioner is not adjusted to the right temperature.

2. It may be that the air conditioner has not been cleaned for too long, resulting in dust accumulation on the filter screen, which will block the cold air of the air conditioner and not blow out.

3. It may be that the freon leakage in the air conditioner causes too little freon and the air conditioner is not refrigerated.

4. Energy saving is the unstable voltage, resulting in the air conditioner not being refrigerated.

5. It may be that the number of air conditioners is not enough, and the small number of horses is not refrigerated when used in a large area of the house.

1. Insufficient refrigerant. Insufficient refrigerant is a more common reason for the air conditioner not to produce residual sales, you can check whether the air conditioner is running normally when the air conditioner is running, and after a few minutes of air conditioner operation, touch the copper pipe in the air conditioner with your hands, if the copper pipe does not appear to heat up, it means that the air conditioner refrigerant is insufficient.

2. The voltage is unstable. When the voltage is unstable or the voltage is too low, the normal operation of the air conditioner will be greatly affected. Especially during the peak period of electricity consumption in the summer evening, there is often a phenomenon of insufficient voltage, and the normal refrigeration cannot be carried out by the air pulse sensitive regulation.

3. The radiator is not cleaned. The principle of air conditioning refrigeration is to transfer the indoor hot air to the outside through the radiator, if the radiator is not cleaned regularly, a large amount of dust or other garbage is stored on the upper area, which will cause the radiator to be unable to dissipate heat normally, and the effect of air conditioning and refrigeration will be greatly reduced or even not refrigerated.