The situation when Indesit refrigerator starts to work louder than usual is familiar to many owners of this equipment. A hum, crackling or periodic humming can not only irritate the ear, but also signal serious problems inside the unit. The Italian brand is famous for its reliability, but over time, even proven mechanisms require attention and maintenance.
The first thing to do when extraneous sounds appear is not to panic, but to listen carefully to the nature of the noise. Compressor, fan or refrigerant - each element makes unique sounds when breakdown. In this article we will analyze in detail all possible causes, from simple installation errors to complex technical failures that require the intervention of a specialist.
A timely response to changes in the acoustic background of the device will help extend its service life. Often the problem can be solved on your own, spending a minimum of time and money. However, it is important to understand where self-diagnosis and the need for professional repair begins.
Normal noise level and operating features of equipment
Before sounding the alarm, it is worth determining whether the noise is a pathology. Modern refrigerators, including models Indesit, are equipped with powerful compressors that cannot operate absolutely silently. A smooth, monotonous hum, which is heard only in complete silence in the room, is considered normal.
The sound pressure level is usually from 36 to 42 decibels. If you are at a distance of 1-2 meters from the device and the sound does not interfere with the conversation, most likely the unit is working. However, sudden changes in the nature of the sound are a sure sign that technical condition has deteriorated.
Particular attention should be paid to the operating mode No Frost. In such systems, air circulation is provided by special fans, which create an additional acoustic background. If you hear an intermittent howling or whistling noise, this may be normal defrost system operation, but if the sounds increase in intensity, there is a problem.
Installation errors and initial diagnostics
Often the reason that Indesit refrigerator is very noisy lies not in a breakdown, but in incorrect installation. Vibration is the main enemy of silence. If the body of the device touches the walls, furniture or floor unevenly, the hum is transmitted to building structures and intensifies many times over.
Check the horizontal installation. The legs of the refrigerator must be adjusted so that the body is stable, without distortion. In this case, the door should open freely and even rise slightly at the beginning of movement due to the correct tilt angle.
It is also critically important to maintain clearances. Air should circulate freely around the heat exchanger located on the rear wall. If the refrigerator is moved close to the wall, the compressor overheats and works with increased load, producing louder sounds.
☑️ Checking the installation
Don't forget to check the shipping bolts if they were not removed after purchase. Although this is rare for older models, in new units forgotten latches can cause severe vibration of the entire body when the motor is running.
Problems with the compressor and motor
The heart of any refrigerator is compressor. It is this that ensures the circulation of refrigerant throughout the system. If you hear a loud knocking, clanging or metallic grinding sound coming from the rear below, the problem is most likely in this unit.
Over time, the motor shaft bearings wear out, which leads to play and a characteristic hum. A “water hammer” situation may also occur when liquid freon enters the compressor cylinder, causing a dull thud upon startup.
⚠️ Attention: If the compressor makes an intermittent knocking noise and immediately turns off, do not try to start it repeatedly. This can lead to permanent failure of the motor windings.
Another common cause of noise is a faulty start relay. This small element is responsible for starting the engine. If the relay contacts are burnt or the mechanism is stuck, the compressor may hum, but not start, or start with a loud click.
Compressor life
The average service life of a modern compressor is 10-15 years. However, intensive use, voltage surges and poor ventilation can reduce this period by half.
Motor diagnostics require special skills and tools. You can only visually inspect the unit yourself for damage or torn pipes, but it is better to entrust deep repairs to a specialist.
Fan noise in the No Frost system
In models with the system No Frost the fan is responsible for the circulation of cold air. Over time, ice can build up on the blades, or dust can get into the fan motor bearings, causing imbalance and noise.
If you hear a cracking noise that sounds like a propeller hitting branches, the fan blades are likely touching ice. This often happens if the defrost cycle is broken or the drainage hole is clogged.
To fix the problem, sometimes it is enough to defrost the refrigerator. A complete defrost for 24 hours will allow the ice to melt and the fan to run quietly again. If the noise returns immediately after switching on, the fan motor will need to be replaced.
| Sound type | Probable cause | Difficulty of repair |
|---|---|---|
| Monotonous hum | Normal operation or wear bearings | Medium |
| Crackling/Knocking | Ice on the fan or compressor malfunction | High |
| Whistling | Freon leakage or turbine operation | Medium |
| Clicks | Start relay malfunction | Low |
Vibration pipelines and fastening elements
Sometimes the source of annoying rattling is not the main units, but secondary elements. The tubes through which it moves refrigerantcan touch each other or the housing when vibrating, creating a metallic ringing.
It is also worth checking the fastening of the compressor itself. It is mounted on shock-absorbing rubber pads. If the rubber has dried out or burst, the vibration of the motor is transmitted to the metal frame of the refrigerator.
To eliminate noise, you can carefully (with the appliance unplugged!) try to bend the tubes so that they do not touch. However, this must be done with extreme caution, as thin-walled tubes can easily be damaged, which will lead to freon leakage.
Pay attention to the plastic tray located above the motor. Water flows into it when defrosting. If it is loose, it will vibrate in time with the compressor. Place a piece of foam rubber or rubber under it to eliminate the gap.
When you need to call a technician
There are a number of symptoms in which self-repair is not only ineffective, but also dangerous. If you notice that Indesit refrigerator not only is noisy, but also has stopped freezing, or a “coat” of ice has appeared on the back wall, professional diagnostics are required.
Interference with the refrigerant circulation system requires a license and special equipment. An attempt to solder the tube yourself or replace the filter without evacuation of the system will lead to damage to the compressor.
⚠️ Attention: Freon used in modern refrigerators can be dangerous if it comes into contact with an open fire, and incorrect refilling will permanently damage the equipment.
A technician is also necessary if the noise is accompanied by a burning smell or electrical sparks. These are direct signs of a short circuit in the wiring or overheating of the motor windings, which creates a risk of fire.
Diagnostic cost
Calling a technician for diagnostics usually costs less than subsequent repairs. In many service centers, the cost of diagnostics is deducted from the price of repairs if you agree to have it carried out.
Noise prevention and care of equipment
In order refrigerator to serve for a long time and quietly, it must be properly cared for. Regular defrosting (for drip systems) and cleaning the drainage holes will prevent the formation of excess ice, which loads the fan and compressor.
Keep the condenser clean - the black grille on the back. Dust and animal hair clogged between the fins impair heat transfer. The compressor has to work longer and harder to maintain temperature, which increases wear and noise.
Use surge protectors to protect against power surges. Unstable power supply is one of the hidden reasons for the early failure of electronics and motor starting devices.
Frequently asked questions (FAQ)
Why does the new Indesit refrigerator work loudly in the first days?
The new unit may work louder due to worn-in compressor parts. Also check that all shipping locks have been removed and that the feet are aligned correctly. If the noise does not subside after a week, contact service.
Is it possible to lubricate a compressor if it starts to hum?
Modern compressors are made in a sealed housing and do not require lubrication at home. Attempting to drill through the housing for lubrication will result in freon leakage and failure. The unit needs to be replaced.
Is it normal for the refrigerator to gurgle after it is turned off?
Yes, this is absolutely normal. The sound of gurgling or flowing liquid is produced by the refrigerant, which continues to circulate in the tubes even after the engine has stopped. This is not a sign of a malfunction.
How to reduce vibration if the floor is uneven?
Use anti-vibration stands under the legs of the refrigerator. They compensate for floor unevenness and dampen vibration, preventing the transmission of hum to the building structure.