Extraneous sounds when operating the air conditioner: hum, crack, compressor noise

The content of the article:

Sources of hum
What does it mean: does the air conditioner work loudly?
Crackle from air conditioner

Extraneous sounds during the operation of the air conditioner may be regular or indicate a malfunction. All climate equipment operates with a certain noise level. However, the noise of the air conditioning compressor may be different.

Sources of hum

Extraneous sounds when operating the air conditioner: hum, crack, compressor noise The intensity of the hum from the air conditioner depends on the following factors:

power;
mode of operation;
technical parameters of the equipment.

So, inverter systems are quieter and there is no extraneous noise, the hum from the air conditioner, they practically do not emit cod. The more powerful the model, the stronger the noise.

When operating in fast cooling mode, the air conditioner will hum more strongly than in sleep mode.

Air moving through the radiator creates the very hum that can be more intense or weaker. This is a uniform sound, the power of which is determined in laboratories. Its value is indicated in the annotation to the air conditioner.

Against this background noise of the air conditioning compressor, others arise. It is they who disturb the owners and sometimes signal a malfunction. These are clicks, hissing, crackling, buzzing. The reasons for such sounds are varied:

The clicks are characteristic for the operation of the relay turning the compressor off, on and off, fans and other components;
Cracking in the air conditioner happens when heating or cooling the plastic parts of the indoor unit. Plastic is deformed and makes a quiet crack;
Hissing can be heard during compressor start-up or shutdown. When Freon changes direction, a hiss is heard;
The sound of pouring liquid is heard during thawing of the heat exchanger or equipment shutdown. It indicates the movement of the refrigerant through the pipes.

As a rule, a rumble from an air conditioner of this kind does not indicate a malfunction and accompanies normal operation.

What does it mean: does the air conditioner work loudly?

You can talk about the fact that the air conditioner is working loudly if the noise level of the indoor unit exceeds 35 decibels. This is the level of conversation in an undertone and such a loudness of the air conditioner can already interfere with sleep.

Crackle from air conditioner

Cracking in the air conditioner is an occasion to urgently diagnose and clean the equipment.

If crack is detected in the outdoor unit, a specialist will need to check the condition of the compressor. This is the most difficult and costly breakdown. Maybe the problem is the garbage that prevents the fan of the outdoor unit from rotating. You can clean the outdoor unit yourself if it is located in an accessible place.

But better professionals can handle the procedure.

If the crack in the air conditioner (indoor unit) is bothering, you should clean or the fan wheel. The blades could clog up with dust. If the impeller is broken, it is changed.

Comments

Fedorych

All that is written here from advice is a type from a joke; “And pounded on wheels?” and wiped the headlights? ” All extraneous noise is determined by a simple peasant at the moment: “deny something in the tubes” and never confuses it with the clicks of a relay, the creaking of bearings, etc. crap. 90% of complaints - gurgling, hissing, clicks - inside the pipes! (I have x-SAMSUNG from the first day so noisy, bought, did not believe the reviews on the Web - but in vain). Here? split ELENBERG 07, after another service grunted, hissed, began to click like a cockatoo. I wanted to find out the reason on the network, but on all sites the same crap about relays, bearings, wind noise and other electro-mechanics - the sites were copied from the same source - some kind of textbook or abstract and are far from life: they say that 2x2 = 4 but do not dig deeper. Around continuous amateurism!

To answer
- Valery Shumanov
  
  Hello, Fedoritch!
  Do you understand that in each case you need to call the wizard? Not a single source will reveal to you all the problems and universal solutions. We tried to give answers to the most common problems and questions, methods for solving them. If this does not help you, then you need to contact the masters of their craft.
  Sincerely, Valery.
  
  To answer
Svetlana

Hello. Answer the question: I have an air conditioner with a heating function, it worked quietly in the summer and now it’s getting colder and turning on no heat. For the first 4 days I worked quietly, and then it started to buzz at work. What is the reason?

To answer
- Valery Shumanov
  
  Hello Svetlana!
  Tell me, what kind of hum is it?
  Perhaps your air conditioner is simply not able to equalize the temperature difference, it is not designed for operation in this mode. First of all, check the documentation.
  If the reason is not clear, we can only advise you to call the master, because These problems can only be dealt with locally.
  In our catalog you can find a list of companies in your city and address them with this question.
  Sincerely, Valery.
  
  To answer
Svetlana

The air conditioner is designed to heat up to -5 degrees. On the street +11 and at home +16. buzzing as if something was stopping him from working at all installed capacity. Thank.

To answer
- Valery Shumanov
  
  Call the wizard, there may be a problem with the filters and it is not possible to take the required amount of air, or maybe there is a problem on the technical side.
  Always happy to help!
  
  To answer
Seryoga

Please tell me why there is a crack (as if something “shoots”) in the outdoor unit of the split system in heating mode (30 degrees, average speed)? Split system of the Panasonic CS / CU-YW12MKD brand.

To answer
- Valery Shumanov
  
  Hello Sergey!
  The most likely causes are as follows:
  - clogging with dust and dirt if it has been operated without cleaning for a long time;
  - Damage to the fan and it hurts something;
  - an electrical problem that causes a circuit.
  In any case, it is recommended to call a specialist, as Using a faulty air conditioner can be dangerous. If in the first two cases it can simply break, then in the case of electronics and a short circuit there can be ill consequences.
  Regards, Valery!
  
  To answer
Ivan

Hello. Please tell me what can be. Split system works for 1 minute and does not respond to control. At the same time, the outdoor unit is very buzzing, it seems that the compressor works immediately with both windings of the working and starting ones. System Panasonic Nine. Thank.

To answer
- Valery Shumanov
  
  Hello, Ivan. In order to avoid damage and risk, we recommend contacting your local air conditioning installation and maintenance company. You can find these using our contractor selection service on the map. Most likely this is really a compressor, but you can only establish a breakdown on the spot.
  
  To answer
Ivan

Thank you so much.

To answer
Love

A buzz is not always a specialist called out said the voltage is not enough but on the stabilizer shows 220 and still buzzing explain what the stabilizer can buy more powerful

To answer
- Valery Shumanov
  
  There are several options:
  -the stabilizer is lying;
  - the master is lying;
  - you don’t catch a specific moment of voltage drawdown or you get at the moment when the input to the stabilizer 220, but at the output there is already a shortage.
  
  To answer
Arina

Hello, my air conditioner is cracking, as if the engine was hitting something, the sound of a helicopter. What is the reason? Maybe you need to clean it? Because of this, the lid loosened and it also knocks.

To answer
- Valery Shumanov
  
  Most likely, the impeller simply clogged with dust, a standard problem of any electrical engineering. Try cleaning or blowing with a vacuum cleaner. If the buzz remains, we recommend that you call a specialist.
  
  To answer
Olga

Hello, please tell me whether it is necessary to cover the outdoor unit of the air conditioner with a dust cover and poplar fluff or is this rubbish?

To answer
- Valery Shumanov
  
  They are equipped with filters that must be cleaned periodically. If you cover with a cover on top, you will need to clean it in any case. It may also interfere with drawing in enough air. Therefore, it is not recommended to do this.
  
  To answer
Tatyana

set the air conditioner, in bad weather a beeping sound, unbearable! the company that set it, they say that this is not a warranty case, wave it off. what to do? the head hurts from these sounds.

To answer
Alexander

Hello, such a problem, at the moment the air conditioner fan (indoor unit) is turned on, a strong hum is heard, then with a set of revolutions it disappears, the encoder is completely cleaned, but the hum did not disappear

To answer
Victor

Hello. Tell me what to see. Inverter Zanussi, an external unit, vibrates very strongly when working on “heat”. Work on the "cold" is perfect!

To answer
Vladimir

Good evening, tell me the reason for the cod, a new split system, the first day of work, LG smart inverter, I turn on any mode, it works perfectly for the first 3 minutes, and then a crack appears, not loud, but like a rattle it’s quiet, annoying annoyingly, and so each times, annoyingly, tell me if anyone has encountered such a problem.
I will add that this crack is in cooling mode, in fan and heating mode it does not exist.

To answer
Nikita

Hello. Air conditioner Fuji electronic model with a cover rising up. The essence of the problem is that for auto modes the air conditioner cooled the room and when I switched to the normal mode of operation (quiet), I heard a sound as if a butterfly were beating wings on glass, a very irritating sound. As I understand it, the impeller does not work well. In general, can an air conditioner work with such an impeller, since Fujitsu is expensive kondey, but I don’t want to suffer with a guarantee, because the condo is located in this foreign country.

To answer
George

Hello.
We have a Toyotomi Hiro Inverter air conditioner. The outdoor unit began to make the sound of “cricket”. Sound may appear and disappear on its own, but it remains for a long time and especially at night very annoying. If you just touch the casing with a lodge, the sound disappears, but returns very quickly. The masters had already called, he came, turned on, there was no sound ... he shrugged and left.
What to do, the situation is deadlock.

To answer
Tatyana

Good afternoon, I have a split system Electrolux07. It is operated 2-3 months. In cooling mode, everything is super Noisy the outdoor unit, but when the window is closed it can not be heard. But when heated, the outdoor unit is very noisy, and a crack is heard. This is normal?

To answer
Nikolay

I hear a crack every 20-25 seconds and the shutter stops moving (when turned on, it opens and closes) for exactly a year split KRAFT-12

To answer
Nargiz

Good afternoon. I turned on the air conditioning for heating. I worked a little, then the fan turned off and clicked. 3-5 times. After 2-3 minutes I earned it. I worked for 5 minutes and again, again. What is it for? Moreover, the sound is the same as in the iron when it cools down

To answer
Vadim

Hello. The air conditioner is off. In the splitsystem block, a gurgling sound with increasing frequency. True, the street is a strong wind. Maybe the reason is that the wind spins the fan and it drives the coolant?

To answer
Oleg

What to put and how rubber gaskets on the cover of the external unit so that it does not rattle. When removing the cover, the external unit works perfectly, almost silently.

To answer
Dmitry

Tell me please. The Samsung air conditioner turned on, clicks went on in the compressor. The Conder itself does not cool. There is no condensate. It works for 5 minutes and turns itself off. What could it be?

To answer

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