What is the reason why the air conditioner always has abnormal noise, and what is the reason for the

There is an abnormal sound in the air conditioner:1. The wall-mounted installation fixed wallboard is not firm and loose or the wall surface is uneven.

2. The assembly of the wall-mounted indoor fan motor, the cross-flow wind wheel and the fan bearing is not in place, resulting in friction noise, resulting in a loud sound of the indoor unit of the air conditioner.

3. The assembly of the indoor fan motor and the cross-flow wind wheel is poor.

4. The air flow is very loud.

5. The air duct system is blocked.

6. The noise of the fan in the air conditioner is particularly large.

Abnormal noise solved:1. Clean the air outlet of the air conditioner in time.

2. Remove the fan blades, add lubricating oil and remove foreign matter.

3. Replace the blower with a new one.

4. Replace the air conditioner filter.

5. Rearrange the bracket of the air conditioner unit, adjust the position of the air conditioner unit to ensure that it is placed horizontally, and tighten the screws of the air conditioner fixing bracket.

1. The sound of the buzzer, it means that your air conditioner may be faulty.

2. The sound of refrigerant flowing, it may be that your air conditioner is overfilled and cannot completely evaporate, and there may also be such a sound when the normal air conditioner is started.

3. There are things stuck on the fan blade or evaporator, such as wire tie and the like, which causes abnormal noise when the fan blade is running. If you can take it out yourself, you can take it out yourself, if not, please find a maintenance person, or find a sales company theory (if it is a new machine).

4. The fan blade screw is loose or falls off, causing the fan blade to not rotate normally.

There are many reasons why the car air conditioner has abnormal noise, mainly including the compressor damage of the car air conditioner, the blockage of the air outlet of the air conditioner, the wear of the fan blades, the abnormal engine noise, etc

1. The compressor of the automobile air conditioner is damaged, due to lack of lubrication, shaft wear, normal compressed air or air leakage. When there is a problem with the air conditioning compressor, the air conditioning system in the car will have symptoms of abnormal noise or no cooling.

2. Blockage of air conditioning outlet: The solution to the abnormal noise of air conditioning caused by the blockage of air conditioning outlet is very simple, only need to clean the air outlet of air conditioning in time. It should be noted that the car air conditioning filter should also be cleaned and replaced on time, generally speaking, the car should be cleaned once after 5000 kilometers.

3. Wear of fan blades: If the fan blades are worn, the fan bearings lose lubrication, and the fan blades are stuck by foreign objects, the car air conditioner will also make a clattering sound. This situation requires the fan blades to be removed for a detailed inspection.

4. Abnormal engine noise: If the belt of the engine is loose or due to other reasons, abnormal noise is generated.

5. Abnormal noise of the blower or air conditioner copy motor: abnormal noise occurs due to foreign body obstruction or damage itself.

The abnormal noise of the air conditioner may be caused by the unconstant airflow organization, hitting each other, or because the screws that fix the gland of the motor are loose.

Solution: 1. Clean the filter screen regularly (should be cleaned once every half a month), if the filter screen is too dirty, the air inlet will not only make the internal machine noisy, vibrate, the wind sound is low, and the wind speed can not be raised, and when the outdoor ambient temperature is not too low, it will make the indoor unit evaporator overheating protection and frequent standby, generally about 10 minutes;

2. Check whether the inner cover is tightly covered, sometimes the inner cover is not tightly covered after cleaning the filter screen or after cleaning, resulting in the vibration and sound of the air conditioner when working;

3. In order to make the room heat up (cool down) quickly when the air conditioner is just turned on, use the high-efficiency key, the indoor unit runs at high speed, and the noise may be a little louder.

4. When the air conditioner is running or after the shutdown, due to the sudden change in temperature, it may lead to the thermal expansion and contraction of the plastic shell and the internal plastic parts, and thus make a "click" sound, which is a normal situation.

5. During the operation of the air conditioner, it will emit sounds similar to running water, gas (the sound of the reversing valve reversing instantaneously when the machine defrosts in winter), and the sound of boiling the pot (the sound of freon entering the indoor evaporator), which can be interpreted as the sound of refrigerant flowing in the machine and the sound of freon reflux in the machine, which are normal sounds and not noise.

6. If the air conditioner is noisy, after eliminating the above reasons, the fault is still there, you should find a professional maintenance personnel for maintenance.

There are two possible reasons for the abnormal vibration and noise of the air conditionerThe details are as follows:

1. Air conditioner foam plastic pads, etc., can make the vibration of the air conditioner intensify and the noise becomes louder during operation. This is especially true at the beginning of start-up and shutdown.

2. When the chassis of the air conditioner collides, the axis of the fan moves, and the blades lose their balance and make an impact sound; If there is a foreign object in the fan, the blades will also make a crashing sound when they collide with it.

Note: Turn on the powered air conditioner and listen carefully to whether the sound of the compressor of the air conditioner is normal, whether there is any abnormal sound, whether there is any noise when the fan is running, and whether the noise is too loud. In the operation of the air conditioner, the vibration is slight and the noise is small under normal circumstances, generally below 50db.

There are many causes of squeaky noises. For example, the compressor electromagnetic clutch is damaged, or the internal wear of the compressor is serious, etc., can produce abnormal noise. It is recommended that you overhaul the following aspects, the compressor electromagnetic clutch is a common part of abnormal noise.

Compressors often run from low speed to high speed under high load, so the requirements for electromagnetic clutches are high, and the mounting position of electromagnetic clutches.

Reasons and solutions for the air conditioner to always click plastic: 1. If the air conditioner rattles from time to time, and the sound is not very loud, and the refrigeration condition is normal, it is the sound of the relay, don't worry too much. Because when the air conditioner reaches the set room temperature, the outdoor unit will shut down, and then the room temperature rises, and the outdoor unit starts to run again, and the relay will run again and again, resulting in a rattling sound.

2. Thermal expansion and cold contraction. If the air conditioner is newly bought, then the sound of plastic cracking is relatively normal. Because the plastic of the air conditioner is relatively new, with the change of room temperature, there will be thermal expansion and contraction, and there is no sound after a month of use, so there is no need to worry too much.

3. The fan shaft deviates from the position. If the fan shaft inside the air conditioner is out of position, it will also cause the air conditioner to have the sound of plastic cracking, and over time, this sound will get louder and louder, and finally form a serious noise, and the internal structure will also be damaged. Therefore, when the fan shaft deviates from the position, it is necessary to find a professional to come to the door for repair.

4. The pressure of the high-pressure pipe of the air-conditioning system is too high. If the pressure of the high-pressure pipe of the air conditioning system is too high, it will cause the internal thermal expansion and contraction, resulting in the sound of plastic cracking. Observe whether there are cracks, damages, frost and condensation in each pipeline of the refrigeration system, so as to judge whether there is a correlation between abnormal noise and high pressure pipe pressure.

Didn't find it at the time?? This is still recommended to go back to the 4S store. Let them find you a problem. Don't tear it up yourself, they won't admit it.

Diagnosis process: Because it is the abnormal sound that occurs when the air conditioner is turned on and off, it is necessary to check the air conditioning system first, and determine what the sound is according to the abnormal sound, because there are three main reasons for the abnormal noise of the air conditioner: First, the pressure of the high-pressure pipe of the air conditioning system is too high.

Second, the condenser is too dirty and the heat dissipation is not good. 3. The expansion valve is blocked, and the pipeline generates high pressure. The above three reasons are that the pressure at the expansion valve is too high when the air conditioner is turned off, the refrigerant flow rate is too slow, and the compressor does not work after the air conditioner is turned off, and the refrigerant in the pipeline is blocked at the expansion valve, which produces a humming sound under the action of high pressure.

Analysis 1: The pressure of the high-pressure pipe in the air-conditioning system is too high. First of all, connect the CA375 refrigerant filling machine, start the engine, turn on the air conditioner to check whether the pressure of the high-pressure gauge is normal, if it exceeds the specified pressure, it proves that the refrigerant is overfilled, and the refrigerant R134A must be re-vacuumed after the refueling, and the specified filling amount is 600 grams.

Analysis 2: The condenser is too dirty and the heat dissipation is not good. When the radiator is too dirty, it can not dissipate heat for the refrigerant circulating to the condenser, and the overheating in the pipeline produces high-pressure and high-temperature gas, which naturally becomes foam-like gas after mixing with the refrigerant.

The cleaning of the water tank and condenser, if the cleaning is not clean, it will affect the refrigeration effect. Analysis 3: There is a slight blockage at the expansion valve.

When the air conditioner is turned on for a period of time, when the pressure of the high-pressure pipeline rises to the specified value, the high-speed gear of the electronic fan starts to work, and as the pressure in the pipeline rises, if the expansion valve is slightly blocked, the refrigerant flowing to the expansion valve will also produce high pressure, and it will make a buzzing sound when the air conditioner is turned off. Replace the expansion valve, if the expansion valve is seriously blocked, there will be severe frosting on the low-pressure pipe.

The abnormal noise of the air conditioner is generally vibration or resonance or mechanical failure. This situation should be stopped in time to prevent long-term abnormal noise and reduce the life of the air conditioner. The cause of abnormal noise can be identified and the problem can be solved.

It should be the sound of the compressor, and there is generally a sound when the machine is turned on. Look at what model you have, the large sound is a bit loud, and it may also be the sound of the flow of refrigerant, as long as it is not a metal collision, there is generally no problem.

If you learn about a situation like this through the car quality network, it is recommended to check whether there is a problem with the compressor and blower, because you can't see the actual car and can't make a specific judgment, in order to avoid affecting the use, it is recommended that you contact the after-sales service as soon as possible.

There are two types of abnormal noise of air conditioning, external abnormal noise and internal abnormal noise.

1.The latter is due to the presence of air or moisture in the refrigerant of the system, which produces abnormal noise when the refrigerant evaporates and expands.

2.The former is what you call a phenomenon, and this kind of abnormal noise is generally because the refrigerant components contain air and moisture, but if you add 3If there is still abnormal noise after refrigerant, it is most likely due to damage to the internal mechanical structure of the compressor.

4.If it is after a period of time** and the location is inside the center console, there is a high possibility that the efficiency of the dryer will be reduced.

Answer: If you use it for a long time, first check whether the lower fan is damaged, especially the root of the leading edge of the blade. The fragile black plastic of the old product has now been improved and strengthened. The vibrations caused by a broken fan cause the whole machine to resonate, and the compressor and copper pipes all make noise and shake with it.

It is common for cracks to appear at the root of the blade, which causes the blade to deform when it rotates, and the fan vibrates due to eccentric rotation, which can develop into a serious resonance of the whole machine after a few minutes of operation, and the compressor and copper pipe shake and emit abnormal noise, which looks very much like a compressor failure. It's OK to get a new fan, but please note that the fixed nut of the fan is reversed, and it will be tightened more and more in the usual direction.

There may be several reasons why the air conditioner may have abnormal noise:

1.Insufficient refrigerant: Air conditioners use refrigerant to compress the refrigeration cycle, and if the refrigerant is insufficient, it will cause the air conditioner to reduce its cooling effect while emitting a dull humming sound.

2.Clogged drains: Clogged drains can cause poor draining of the air conditioner, which affects the cooling effect, accompanied by a humming sound.

3.Air conditioner fan failure: The air conditioner fan can help the air conditioner to cool, if the fan failure is poor, it will lead to a decrease in the cooling effect of the air conditioner, accompanied by a humming sound of the air conditioner.

4.Cracked or leaking aircon ducts: Ruptured or leaking aircon ducts can cause refrigerant leakage, which affects the cooling effect, accompanied by a humming sound.

5.Dust and dirt inside the air conditioner: Dust and dirt can cause the efficiency of the air segment or conditioning to decrease, accompanied by a humming sound.

The reason why the air conditioner always has abnormal noise:

1. Thermal expansion and cold contraction of plastic parts.

When the household air conditioner is running or after shutting down, due to the sudden change in temperature, it may lead to the thermal expansion and contraction of the plastic shell and the internal plastic parts, and therefore make a "click" sound, which is a normal situation.

When the machine stops running, it will make a rattle sound due to the temperature difference, which is likely to happen to all household air conditioners, so you don't have to worry. During the operation of the household air conditioner, it will emit sounds similar to running water, gas, and boiling (the sound of freon entering the indoor evaporator), which can be interpreted as the sound of refrigerant flowing in the machine and the sound of freon reflux in the machine, which are normal sounds and not noise.

2. Whether the filter is cleaned regularly.

The filter screen should be cleaned once every half a month, if the filter screen is too dirty, the air inlet is blocked, not only will the internal machine be noisy, there is vibration, the wind sound is low, and the wind speed can not be raised, and when the outdoor ambient temperature is not too low, it will make the indoor unit evaporator overheat protection and frequent standby, generally about 10 minutes apart; Whether the inner unit is tightly covered, sometimes the user does not cover the inner unit tightly after cleaning the filter screen or after cleaning, resulting in the vibration and sound of the household air conditioner when it is working.

When the household air conditioner is just turned on, in order to make the room heat up (cool down) quickly, use the high-efficiency key, the indoor unit runs at high speed, and the noise may be a little louder. In general, the high-efficiency function will automatically stop after 15 minutes of operation.

Household air conditioner has a solution to abnormal noise:

1. Do a good job of noise control.

To do a good job in noise control of household air conditioning, architects and HVAC household air conditioning engineers also need to pay special attention to noise household air conditioning, which coincides with the design concept of Chongqing household air conditioning, the designer initially took the noise control into account, and then comprehensively considered the sound environment and indoor microclimate environment, indoor air quality and other factors for the overall design, to ensure that the later use of household air conditioning has a good application effect and comfort.

2. Inspection by professional maintenance personnel.

When the household air conditioner is noisy, you can ask the maintenance personnel to check the overall condition of the household air conditioner, strengthen the vibration damping foundation of the fan, replace the failed shock absorber, check the impeller, bearing, and balance of the fan, and repair or replace it in time if there is damage. Reduce the air supply speed when using and avoid excessive wind speed adjustment, which will effectively solve the noise problem of household air conditioners.