What is the reason why the air conditioner buzzes every few moments?

There was a fan turning outside the air conditioner. If the air conditioner has been used for a long time, the reason for the buzzing of the external unit is mostly caused by lack of oil or wear of the fan blades.

It is very difficult for the average individual to fix the situation. Nowadays, many houses do not reserve air-conditioned rooms, and air-conditioners can only be hung on the wall. Only professional maintenance personnel can be asked to repair it. This can be solved by replacing the fan or adding some lubricating oil.

Second, the motor aging.

The exterior air conditioner has a built-in DC brushless motor. If the air conditioner is used frequently or has a long lifespan, it may be caused by severe wear and tear inside the motor. Due to the internal structure of the motor, it is equally difficult for individual users to repair.

The safest solution is to change to a new brushless motor, and the resonance of the external machine will be reduced a lot.

In addition, it should be noted that sometimes the hum of the external air conditioner is not necessarily a problem with the motor, but because the fixing screws or motor screws of the external air conditioner are loose, and centrifugal force will be generated during the rotation of the air conditioner, resulting in vibration. If this is the case, just tighten the screws.

Three. Other reasons.

Generally speaking, the hum of an outdoor air conditioner is the above two causes, but there are some other reasons as well. Based on personal experience, let's talk about the reason why the outside air conditioner is humming.

If the upstairs outdoor air conditioner is not permanently installed directly above your own outdoor air conditioner, you may not usually feel anything, but if the air conditioner is used upstairs or downstairs at the same time, it will resonate.

The reason why the air conditioner outside unit buzzes every once in a while is that the air conditioner outlet is louder, and the louder the air conditioner wind speed, the louder the noise; Air conditioning panelsThe loosening will lead to friction during operation; If the indoor unit of the air conditioner is not installed properly, it will cause sound to be emitted.

The solution to the noise of the air conditioner:

1. The noise caused by non-standard installation is common such as loose feet, unstable fixing parts of the bracket and uneven installation of the external machine. The noise caused by such factors is generally tightened to the external unit, and the noise can be discharged by leveling.

2. The outer casing is loose and causes the joint to collide with each other and vibrate during work to produce noise, and the fault part is judged first and then fastened.

3. The vibration of the press during work causes the collision noise between the external machine pipelines, and the fault can be eliminated by adjusting the mutual protection distance between the external machine pipelines or installing shock-absorbing cement. Noise when the press is working: one is caused by parts.

It is common to see a press jam or a damaged starting capacitor of the press. Damaged spare parts can be replaced.

The other is that the performance of the press is poor, and it produces a low-frequency vibration hum when working. It can be used to adjust and replace the press foot shock-absorbing rubber pad to wrap the soundproof cotton.

and other methods to be excluded.

If the air conditioner is used for a long time, the reason why the external unit is buzzing is mostly the fan blades.

Caused by lack of oil or abrasion.

In general, this situation occurs, it is difficult for individuals to repair, and now many houses will not reserve an air-conditioning room, and the air conditioner can only be suspended on the wall, and can only be repaired by professional maintenance personnel, replacing the fan or adding some lubricating oil.

Second, the motor aging.

The air conditioner has a built-in brushless DC motor.

If the air conditioner is used more frequently or for a long time, it may be caused by serious wear and tear in the motor, based on the internal structure of the motor, it is also difficult for individual users to repair, the most secure solution is to replace a new brushless motor, and the resonance of the external unit will be reduced a lot.

In addition, there is a situation that must be noted that sometimes the buzzing of the air conditioner is not necessarily the problem of the motor, but because the fixing screws or motor screws of the air conditioner are loose, and the air conditioner will produce centrifugal force in the process of rotation.

This creates a vibration. If this is the case, simply tighten the screws.

3. Other reasons.

In general, the buzzing of the air conditioner is the above two reasons, but there are some other reasons, based on personal experience, and then there is an additional cause that causes the air conditioner to hum.

If the air conditioner upstairs is not fixed and is installed directly above your own air conditioner, you may not usually feel anything, but if the air conditioner is used upstairs or downstairs at the same time, there will be a resonance situation. Hope mine helps you! Hope.

As long as the air conditioner is working properly and the humming sound is relatively smooth, it is normal. During the use of the air conditioner, the fan motor of the outdoor unit will make a loud wind sound, and the compressor will also emit a large operating noise. The press hit the S-tube fan offset position during start-up, causing it to rotate irregularly when start-up.

This is the sound emitted by the outdoor compressor when it works, and if there is an abnormal noise, it means that there is dust collection or a problem, etc.

The outside unit of the air conditioner is buzzing and does not turn, and it may be a contactor.

If there is damage, the indoor unit and the outdoor unit cannot be connected, and the power supply cannot be transmitted to the external unit. The bracket installation level of the external unit is unstable or the fixing screws of the combined bracket are not tightened and deformed, which will cause the uneven placement of the air conditioner outdoor unit, and the noise will occur during the operation of the air conditioning outdoor unit.

After the air conditioner is turned off, the external unit is still humming, indicating that the fan of the external unit of the air conditioner is still rotating, and it needs to dissipate heat for a while before stopping. If the wall is not firm or the installation position is on the top, causing the wall resonance, the outdoor unit should be installed on the outer wall at the concrete beam from the floor as far as possible, so that the installation is the most firm, the noise is also the smallest, and the wall resonance will not be caused. It can be that the installation of the air conditioner is not standardized, the feet and brackets are not fixed firmly enough when the air conditioner is installed, the installation of the external unit is not stable enough, and the external unit vibrates when it is working, and some noise will be emitted.

First find the host with a sound, and then disassemble the outer cover, boot the sound from there, the general compressor 3 anti-vibration rubber pads aging, loose will also have a sound, it is best to replace it, if the cover is installed and there is a sound, then use foam paper pad to solve it. You can use your hand to press the shell of the air conditioner to see if it resonates with that place. If the hand pressure does not improve, then it is necessary to see if it is an inverter air conditioner.

Finish. Inverter air conditioners will run at low frequency after the indoor temperature reaches the surface. If the air conditioner is running upstairs, then this is normal.

However, if the noise continues to increase, there may be a problem with the air conditioner's fan. Repairs are required. Or maybe the air conditioner has entered something.

It needs to be cleaned up.

This may be because the air conditioner does not have enough refrigerant, or the air outlet of the air conditioner is blocked, the higher the wind speed is turned on, the quieter the sound will be, or because the panel of the air conditioner is partially loose, there will be a humming sound.

The main reason is that the air conditioner is constantly running, and the running engine will drive some sound in the process of vibration.

It's that the air conditioner has been used for a long time and there are some faults, you should call ** to find a maintenance worker and ask them to help you see what the problem is.

Summary. What is the reason why the air conditioner buzzes every few moments? Hello, dear. The answer to your question is as follows: The intermittent humming of the outdoor unit of the air conditioner may be caused by the stalling of the outdoor unit's fan.

What is the reason why the air conditioner buzzes every once in a while? Hello, dear. The answer to your question is as follows: The intermittent humming of the air conditioner outside the air conditioner may be caused by the outdoor unit fan stopping.

The fan didn't stop.

Hello, dear. The answer to your question is as follows: the external unit is buzzing for a while, and the reason for this is that it may be caused by the outdoor unit working or stopping working.

When the indoor temperature is high, the refrigeration system needs to be turned on, and the outdoor unit needs to be started, and there will be a sound at this time; When the outdoor unit stops working, the compressor and fan also stop working, and the noise of the outdoor unit is gone.

The intermittent humming of the outdoor unit of the air conditioner may be caused by the outdoor unit fan stalling. When the outdoor unit of the air conditioner starts the cold machine, there will be refrigeration, and soon the temperature of the condenser of the outdoor unit rises, and the refrigeration effect becomes worse, because the heat can not be dissipated, the refrigerant pressure is too high, the load of the compressor increases, the temperature rises and makes a humming sound, until the heat protector acts, the compressor stops running, and the compressor has no sound.