The thin tube of the air conditioner has just been turned on and frosted, why does the thin tube of

Generally speaking, the causes of frosting in the thin tube of the air conditioner may be as follows:

1. Normal frosting

When the air conditioner starts to operate, due to the low condensing temperature and condensing pressure, the liquid supply of the capillary tube is lower than the normal value, so that the evaporation pressure is reduced, so that the frosting phenomenon occurs in the low-pressure liquid supply pipe. However, this frosting to melting is only a short process, generally frosting begins after the compressor runs, and the entire frosting and melting process is over within 5 minutes, and the air conditioner enters normal operation.

2. Fluoride deficiency and frosting

When the air conditioner lacks refrigerant, frost will form in the low-pressure liquid supply pipe, which is a typical fault phenomenon. This phenomenon is manifested in the fact that frost begins to form in the low-pressure liquid supply pipe when the air conditioner starts to run, and it does not disappear after more than 10 minutes of compressor operation. The cause of fluorine deficiency may be normal for air conditioners that have been used for many years, as long as the refrigerant is added.

3. The refrigeration system is partially blocked

Blockages are usually found at the filter outlet or capillary inlet. Due to the throttling effect caused by local blockage in the system, the pressure after throttling is lower than the normal value of the air conditioner, causing frosting in the liquid supply pipe. Lack of fluorine and blockage will make the liquid supply pipe frost, return pressure, operating current, and exhaust air temperature of the condenser lower than the normal value, the fault phenomenon of the two is very similar, and it is easy to cause misjudgment in the maintenance process.

Maintenance of the air conditioner before it is turned on:

Usually, household air conditioners are shut down and deactivated in September, and they are not turned on until May and June of the following year, and they are out of service for more than half a year. Therefore, before the air conditioner is turned on, a comprehensive "diagnosis" must be done to check whether there is a "problem" with the air conditioning equipment.

According to the results of the inventory, under the guidance of professional and technical personnel, do a good job of maintenance and cleaning, this maintenance and cleaning should be in place, including the shell, body, and filter of the outdoor unit and the indoor unit, and then start the trial operation to observe the refrigeration speed and effect.

The frosting of the high-pressure pipe is due to the low condensation pressure of the system, the press circulates the refrigerant to the condenser, uses the fan to dissipate heat and condense, and then throttles through the capillary tube and transports it to the internal evaporator for refrigeration.

If the system refrigerant is lacking, the refrigerant will evaporate at the end of the condenser and reach the capillary, due to the lack of refrigerant, and then throttle through the capillary, the evaporation point will be lower when the capillary frost reaches the connecting pipe of the inner and outer machine, and the high-pressure pipe will frost.

Solutions for the freezing of the thin pipes of the air conditioner:

1. 98% of the failures are due to insufficient refrigerant. For this reason, 99% of the reason is caused by installation problems, check whether the connecting pipe is tightened.

If there is an extended pipe during the installation process, the weld should be checked for trachoma.

If the length of the connecting pipe is reduced during the installation process, it is important to check whether the bell mouth of the self-expansion is qualified.

2: There is a system leakage caused by the quality problem of the machine itself, which requires professional maintenance workers to check and repair.

3: It is caused by the blockage of the capillary tube of the machine, and the fault is manifested as frosting of the high-pressure pipe of the air conditioner, and frosting of the capillary tube in the machine, and the current has risen all the way from the beginning of the start-up. Until the compressor overheats and shuts down, the capillary tube can be replaced after the refrigerant is discharged.

If you use an electronic expansion valve, check whether the electronic expansion valve is faulty.

If there is no problem, it is recommended to replace the tube temperature thermistor of the internal unit, as it will affect the opening and closing degree of the electronic expansion valve.

The thin tube frost just started up, because the pressure of the thin tube is low, so the frost is frosted, and the frost melts after a long time of booting, and this phenomenon is also frequent. Based on what you said, your air conditioner is working normally. As for feeling that the effect is not as good as in previous years, you can clean the filter to see if the heat sink of the external unit is dirty and blocked.

If that's all right, that's your mind.

It's best to get a professional to check it out.

It is found that frost is formed on the thin pipe of the air conditioner, because when most air conditioners are running, the temperature and pressure of refrigeration are relatively low, and the temperature will generally be lower than the normal value, resulting in low evaporation pressure, and frost will occur at this time.

The outdoor unit of the air conditioner hangs outdoors for a long time, and is exposed to the sun and rain, wind and dust erosion, and is very easy to rust and dust blockage, which seriously affects the normal service life of the air conditioner. If the protection is poor, dust will also enter, and the aluminum sheet inside the exhaust or the motor and the external unit, the aluminum sheet behind it will also cause poor heat dissipation, and the shell is easy to corrode. Potatoes are empty.

Precautions for air conditioner cleaning.

When cleaning, first scrub the air conditioning panel, and then gently scrub the dust on the panel with a rag, and pay more attention to the details and connections to prevent the residual dust on the dead corner.

In addition, users need to pay attention to the left and right sides of the air conditioner as well as the top position. The key position to clean is the air outlet of the air conditioner, in long-term use, because it is the air outlet of the air conditioner, so it is easy to accumulate dust on the surface.

The above content refers to Encyclopedia - Air Conditioning.

Frosting of high-pressure pipes is due to low condensation pressure in the system.

The press limb circulates the refrigerant to the condenser.

Use a fan to dissipate heat and condense.

After throttling through the capillary.

Conveyed to the internal machine evaporator for refrigeration.

If the system is deficient in refrigerant.

The refrigerant is at the end of the condenser.

It evaporates when it reaches the capillary tube of the stocking.

Due to the lack of refrigerant.

The flow is then throttled through the capillary.

Capillary frosting.

When the connecting pipe of the inner and outer machine is reached, the evaporation point will be lower.

The high-pressure pipe will be frosty.

Buy some books on refrigeration.

There are explanations.

If you know that there is frost on the thin pipe of the air conditioner, it is a normal phenomenon of Liyou, most of the air conditioners are running, the refrigeration temperature and pressure are low, and the temperature is generally lower than the normal value, then there will be frost, the so-called frost refers to the general fault situation, which can be roughly expressed as frost on the thin pipe after the air conditioner starts to run. Solution: 1. Normal phenomenon Generally speaking, if you know that there is frost on the thin pipe of the air conditioner, it is a normal phenomenon, most of the air conditioners are running, the refrigeration temperature and pressure are low, and the temperature is generally lower than the normal limb wax locust value, so the evaporation pressure is low, and the phenomenon of frost will occur.

2. Refrigeration system failure Air conditioning has a refrigeration system for a long time, and some situations will inevitably occur, for example, there is a problem of local blockage, at this time, the outlet of the general filter is blocked, and the system produces a throttling effect, and when the pressure after throttling is lower than the usual working system, the thin pipe will frost. 3. Fluorine is not enough Lack of fluorine in air conditioning refers to the lack of refrigerant, at this time the pressure drops, frosting is a very common failure, roughly, after the air conditioner starts to run, it can be manifested as a thin tube ending frost, and basically you will not disappear for a long time. 4. Note:

When the air conditioner does not have refrigerant, the low-pressure liquid supply pipe may frost, which is a typical fault phenomenon. This phenomenon is manifested in the air conditioner starts to run, the low-pressure air supply pipe is frosty, and the compressor will not disappear after 10 minutes of operation, it is recommended to find a professional maintenance master for diagnosis.

Summary. Dear, hello, the air conditioner has just started to frost the thin tube, and the solution is as follows: the frosting of the thin tube is a lack of fluorine, and it is good to make up some fluoride.

After repeated start-up a few times, it will return to normal, and the phenomenon of dirty blockage is suspected, and mild dirty blockage is the same as the manifestation of fluoride deficiency, that is, frosting of the thin tube. Solution: 1. Flush with nitrogen, 2. Replace the filter, 3. Replace the capillary, and the specific method depends on the specific situation.

Supplementary reply: The temperature hits 28, the external machine does not stop, this problem is related to the height of the internal machine installation, the error of the temperature sensor, you can appropriately increase the set temperature. Dear, <>

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The air conditioner just started to frost in the tubes, and after a while it was normal.

Dear, hello, the air conditioner just started the frosting of the thin tube, and after a while, the solution is as follows: the frosting of the thin tube, that is, the lack of fluorine, just make up some fluorine. After repeated start-up a few times, it will return to normal, It is suspected that there is a phenomenon of dirty blockage in the rock, and the mild dirty blockage is the same as the manifestation of fluoride deficiency, which is the frosting of the fine tube.

Solution: 1. Flush with nitrogen, 2. Replace the filter with more deficiency, 3. Replace the capillary, and the specific method to use depends on the specific situation. Additional Reply:

The temperature hits 28, the external unit does not stop, this problem is related to the height of the internal machine installation, the error of the temperature sensor, you can appropriately increase the set temperature. Dear, <>

The above is the answer I summarized for you, I am very happy to serve you, please give me a thumbs up, thank you very much for <>

I hope mine is helpful to you, and then I hope you are happy every day and have a good life<>

Good luck always comes with you, oh <>

It's just a little bit at first, and it's not normal for a while.

It's normal pro.

The air conditioner just started to frost the thin tube, and after a while, it was normal, hello, dear, normal phenomenon. At this time, the compressor absorbs a large amount of gaseous refrigerant from the low-pressure side, and the pressure of the original normal temperature liquid refrigerant on the high-pressure side is very low, and the corresponding temperature is very low, and the part of the thin pipe close to the shut-off valve will be frosted. When the refrigeration system is in equilibrium, the frost melts away on its own.

1. Normal phenomenon. Generally speaking, if you notice frost on the thin pipe of the air conditioner, it is most likely normal. Because most air conditioners are running, the temperature and pressure of refrigeration are relatively low, and the temperature will be generally lower than the normal value, resulting in low evaporation pressure, and frost will appear at this time.

2. Refrigeration system failure. Air conditioners will have a key to the refrigeration system, after a long time of use, there are some situations that are difficult to avoid, such as the problem of local blockage, at this time it is generally the filter outlet and other positions are blocked, at this time the system will produce a throttling effect, the pressure after throttling is lower than the normal working system, and the thin pipe will frost.

3. Lack of fluoride. The lack of fluoride in the air conditioner is the lack of refrigerant, and the pressure will be reduced at this time, resulting in frosting, which is a very common fault situation, which can be roughly manifested as long as the air conditioner starts to run, the thin pipe will be frosted, and basically you will not disappear for a long time.

The causes of frosting in the thin tubes of air conditioners are: clogged air filter, low evaporator temperature, insufficient refrigerant, improper maintenance of air conditioner, and low indoor temperature.

1. The air filter is blocked.

The air filter is an important component in the air conditioner, which can filter dust, bacteria, soot and other harmful substances in the air. If the air filter is not cleaned for a long time, it will lead to poor air circulation, which will make the temperature of the evaporator attached to the air conditioner tube too low, resulting in frost formation of the tube.

2. The temperature of the evaporator is too low.

The evaporator is an important component in the air conditioner, which can evaporate the moisture in the air, thus making the indoor air cool. However, if the evaporator temperature is too low, it will cause the moisture in the air to condense into dew, which will cause frost in the thin tubes of the air conditioner.

3. Insufficient refrigerant.

Refrigerant is an important component in an air conditioner that removes heat from the room, thus cooling the indoor air. However, if the refrigerant is insufficient, the temperature of the evaporator to which the thin tube of the air conditioner is attached will be too low, which will lead to frosting of the thin tube.

4. Improper modification and maintenance of air conditioners.

If the air conditioner is used for a long time, it needs to be maintained to a certain extent. If the air conditioner is not properly maintained, it will cause dust, dirt, and other substances on the surface area of the evaporator attached to the thin tube of the air conditioner, which will lead to frosting of the thin tube.

5. The indoor temperature is too low.

The low indoor temperature is an important cause of frosting in the thin tube of the empty yard car. If the indoor temperature is too low, the temperature of the evaporator to which the thin tube of the air conditioner is attached will be too low, which will cause frost to form in the thin tube.

1. It may be because of the lack of fluoride in the air conditioner, the pressure will be reduced at this time, and then the frost will be caused in the thin tube of the air conditioner. 2. Air conditioners will have refrigeration systems, general air conditioners will inevitably have problems if they are used for too long, if the filter outlet and other positions are blocked, the refrigeration system will have a throttling effect, and if the pressure after throttling is lower than the normal working value, it will frost. 3. When the air conditioner is in use, the temperature of the refrigeration is lower than that of the hypothesis, and the temperature will generally be lower than the normal value, resulting in the evaporation pressure becoming lower, and the phenomenon of frost will appear at this time.

Suggested treatment methods: 1. When the air conditioner starts to run, because the condensation temperature and condensation pressure are low, the liquid supply volume of the capillary tube is lower than the normal value, so that the evaporation pressure is reduced, so that the frost difference scattering occurs in the low-pressure liquid supply pipe. But this kind of frosting to melting is actually only a short process, generally after the compressor runs will start to frost, within five minutes the entire frost melting process will be over, at this time, the air conditioner will enter normal operation.

2. If it's because of the freon of the air conditioner.

If the air conditioner tube frost is caused by insufficiency, you can contact a professional air conditioner maintenance person to add it, and the air conditioner that has been purchased for many years generally needs to be added. 3. If it is because of the problem of the refrigeration system, then at this time, it is necessary to contact professional maintenance personnel to come to the door for maintenance and inspection.