The air conditioner has a noise buzzing, the air conditioner is loud and buzzing what s going on

1.The air conditioner compressor has poor performance and produces low-frequency vibration and humming sound when working. The compressor can be adjusted and replaced.

2.When the air conditioner is started or stopped, it is normal for the plastic parts of the internal machine to expand and contract due to the temperature change.

3.The outdoor unit of the air conditioner is too dirty, or there are foreign objects in the case, and the friction fan makes noise; Just clean up the foreign object.

4. Caused by spare parts, the common ones are compressor cylinder stuck or compressor starting capacitor is damaged, and the damaged spare parts can be replaced.

5.When the fan is running, it rubs against the outer wall. Adjust the distance between the fan and the exterior wall in time. Alternatively, it's possible that the fan is stuck. Add some lubricating oil to the fan shaft of the air conditioner to ensure that the fan rotates smoothly.

Why is the air conditioner noisy?

2.Why is there noise in air conditioners – design and installation of outdoor units?

1.Improper installation of the outdoor unit of the air conditioner.

If the outdoor unit of the air conditioner is not installed properly, first figure out the wall structure, such as precast concrete, and the indoor side is mostly office space, bedroom, study, etc. , which is more hollowed, will produce surround sound indoors, which is caused by the architectural structure and the interior decoration effect of the house. This phenomenon is an objective factor.

2.The screws of the outdoor unit of the air conditioner are loose.

The screws at the bottom of the outdoor unit of the air conditioner are unevenly stressed, and the fastening screws of the bottom plate are loose. When the compressor is running, it should vibrate and cause the chassis to jump and produce noise. Tighten the anchor screws with a wrench while tightening evenly and firmly.

It is forbidden to tighten one of the screws in place first, as this will cause uneven fixing force.

1. The main reason for the buzzing sound of the air conditioner is the loosening of the air conditioner shell.

First of all, exclude the influence of the power supply (the left zero and right fire in the socket come to the neutral grounding wire, because the reverse connection of the power zero fire wire will affect the filtering effect of the air conditioning filter circuit); Then, the resonance echo caused by the loosening and displacement of the transformer, the gap of the chassis buckle, etc., is eliminated. Finally, it is the current sound caused by the poor quality of the transformer. Another point that is easy to overlook is that in some places, the installation position of the internal machine will reversely amplify the noise of the machine.

The specific reason also needs to be inspected by an experienced master on site.

2. The installation of the indoor unit and the connection of the outdoor unit will also affect the use time and noise of the air conditioner.

If the installation of the indoor unit is not stable enough, when the outdoor unit is running, the copper pipe is connected to the indoor unit, if the indoor unit is not stable enough, it will be affected by the compressor, which will cause the resonance of the indoor unit. The noise caused by non-standard installation is commonly found in loose foundations, unstable fixed parts of brackets, and poor installation of external units. The noise caused by such factors is generally fixed on the external machine, and the noise can be discharged after leveling.

3. The reason of the machine itself.

Specific reasons: caused by the deviation of the center of gravity of the cross-flow fan; cracked inner fan; Caused by defective motor bearings, there is AC sound; Transformer AC sound. The external reason may be a problem with the wall structure, and if it is installed on a hollow wall, there will also be abnormal noise.

Related Notes:

Although the biggest advantage of switching power supply is quiet, high efficiency and low cost. But the only disadvantage is that the long-term live 100 work, the life is obviously worse than the transformer, and the stability is also worse than the transformer.

In order to reduce the failure rate, all air conditioning manufacturers use transformers with more stable performance, and the external power supply of inverter air conditioners is switched power supply.

The reason why the air conditioner is loud and humming is that the air conditioner blades are damaged, the air punch tone compressor is faulty, the air conditioning pipeline is not smooth, the air conditioner vibrates too much, and the air conditioner circuit fails.

1. The air conditioner blade is damaged.

Air conditioning blades are very important components in air conditioners, and their quality and condition will directly affect the use effect and noise level of air conditioners. If the air conditioner's blades are damaged or deformed, the air circulation will be poor, and it will also make a humming sound.

2. Air conditioning compressor failure.

The air conditioner compressor is the core component of the air conditioner operation, and if it fails, it will lead to increased air conditioning noise. For example, when the mechanical parts inside an air conditioning compressor are worn out or deformed, there will be a humming sound.

3. The air conditioning pipeline is not smooth.

The air conditioning pipeline is the air conditioner that plays the role of transporting refrigerant, if the pipeline is not smooth, it will lead to poor refrigeration effect, and it will also make a buzzing sound. This is usually caused by the presence of dirt or foreign objects in the pipeline.

4. The air conditioner vibrates too much.

Air conditioners vibrate when they are running, and if the vibrations are too loud, they will make a buzzing sound. This situation is generally caused by the installation of the air conditioner is not firm or the ground is uneven.

5. Air conditioning circuit failure.

The air conditioner circuit is a very important part of the air conditioner, and if it fails, it will also lead to increased air conditioner noise. For example, when a capacitor or inductor in an air conditioning circuit fails, it makes a buzzing sound.

1. Air conditioning outlet

The main noise of the air conditioner is the air outlet of the air conditioner, when the air conditioner is turned on, the greater the wind speed, the noise value of the air conditioner will gradually increase, which is one of the main noise values of the air conditioner.

2. Loosening of the air conditioning panel.

Loosening of the air conditioning panels. When the air conditioner is used for a long time, the panel of the air conditioner is easy to loosen due to various reasons, so that the vibration generated by the air conditioner during operation will make the panels rub against each other, resulting in noise.

3. Installation of air conditioning indoor unit.

The installation of the indoor unit of the air conditioner and the connection of the outdoor unit also affect the timing, use and noise of the air conditioner. If the installation of the indoor unit is not stable enough, when the outdoor unit is running, the copper pipe is connected to the indoor unit, and the indoor unit is not stable enough, it will be affected by the compressor, resulting in the resonance of the indoor unit.

4. Air conditioning compressor.

Air conditioning compressor This is also one of the most important air conditioning noise, the noise value of the compressor is too large, which will also affect the use and rest of our normal users.

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.

If there is a large difference between the set temperature and the indoor temperature, the air conditioner will let the indoor unit run at high speed in order to reduce the indoor temperature to the set value as soon as possible, and the air dryness will become relatively large, and there will be a humming sound. However, when the air conditioner has been working for a while, it will turn into normal operation, and the sound will become much quieter.

It is also possible that the panel of the air conditioner is loose, especially after the air conditioner has been used for a long time, this phenomenon will easily occur, resulting in mechanical noise, and the problem of loud sound can be solved by fixing the panel back firmly.

There is also a situation that the installation of the indoor unit is not stable enough, when the outdoor unit is running, the copper pipe is connected to the indoor unit, which will cause the indoor unit to vibrate, and it will also emit uncomfortable noise.

The last situation is that there is a problem or failure of the compressor in the external unit of the air conditioner, which will also cause the air conditioner to make unpleasant noises when working; When the copper pipe of the air conditioner is squeezed, it will cause the flow of freon to be not smooth, which will lead to an increase in the power of the compressor, produce violent movement, and also make a lot of noise.

When the air conditioner makes a lot of noise, we need to find the corresponding cause and find a professional to help repair it when necessary.

The reasons for the loud buzzing of the air conditioner are: high wind speed, loose air conditioning panel, improper installation of indoor unit, high-speed operation of the compressor, and power supply.

2. Loose air conditioning panel: After the air conditioner has been used for a long time, its panel is easy to loosen, so it will cause resonance during operation, which will make the panels rub against each other and produce large noise. Just re-fasten the panel screws securely.

3. Improper installation of the indoor unit: The installation of the indoor unit of the air conditioner and the connection of the outdoor machine will also cause noise. If the installation of the indoor unit is not stable enough, and the copper pipe is connected to the indoor unit, when the outdoor unit is running, the indoor unit will be affected by the compressor, resulting in the resonance of the indoor unit causing noise.

Common ones include loose foundation, unstable fixed parts of the bracket, poor installation of external units, etc. Noise caused by such factors can be discharged as long as it is leveled.

4. The high-speed transportation of the compressor will also cause noise in the air conditioner, which will affect the use and rest of the user.

5. Power supply influence: the gap between the loosening of the transformer and the displacement will cause resonance echo. The sound of the current is caused by the poor quality of the transformer. The installation position of the internal machine will reverse amplify the noise of the machine, and the void needs to be inspected by an experienced master on site.

1. There is air leakage in the connecting pipe between the indoor unit and the outdoor unit, resulting in the leakage of refrigerant, which is emitted"Whew"The ringing sound.

2. The copper pipe between indoor and outdoor units is too long or there are oil stains on the inner wall of the copper pipe, which will cause the flow of refrigerant to be blocked, and sound will also be generated.

3. When the air conditioner is used, the leakage room is longer, and there is more dust on the surface of the filter screen and evaporator inside, which affects the heat dissipation effect.

4. If the air conditioner is not cleaned and maintained for a long time, there will be too much dust inside, and it will be emitted"Squeak, squeak, squeak"sounds.

5. If the installation is improper, such as the inner and outer machines are too close to each other, or they are not fixed firmly, it will cause abnormal noise caused by mutual friction.

6. If the room area is large and the space is closed, then even if you open the small gear, you will hear a loud sound.

7. If it is a newly installed air conditioner, you may hear a sound similar to an electric drill when you first turn it on.