The situation when Ariston refrigerator begins to make unusually loud sounds often takes owners by surprise. Just yesterday the equipment worked almost silently, but today it makes a hum, knocking or whistling noise that interferes with rest. Understanding the nature of these sounds is the first step to solving the problem, be it a simple adjustment or calling a technician.
Many users mistakenly believe that any noise indicates a breakdown, however modern models they have their own operating characteristics. In some cases, extraneous sounds are normal, but sudden changes in the acoustic background should not be ignored. Let's figure out what exactly is happening inside your unit.
In this article we will analyze in detail the main sources of noise, from motor operation to defrosting problems. You will learn to distinguish between alarm signals and normal sounds, and also learn what measures you can take yourself to reduce the noise level in the room.
Features of the compressor in Ariston refrigerators
The main source of sound in any refrigerator is the compressor. Models Ariston, especially older lines, often had single-compressor systems installed, which can be quite noisy. Inverter compressorif it is installed in your model, it is usually quieter, but can also make a characteristic clicking or hum when starting or stopping.
If you hear a hum that either increases or decreases, this is most likely the normal operating mode of the engine. However, if the sound becomes similar to roaring or rattling, you should pay attention to the fastening of the unit itself. Sometimes the vibration is transmitted to the body, increasing the effect.
⚠️ Attention: If the compressor hums continuously without turning off, and the refrigerator does not freeze well, this may indicate a loss of refrigerant or a malfunction of the thermostat.
It is also worth considering the age of the equipment. Over time, the motor bearings wear out, which leads to an increase in noise levels. Motor-compressor is the heart of the refrigerator, and its operation directly affects the acoustic comfort in your kitchen.
The influence of the No Frost system and fan operation
If your Ariston refrigerator equipped with a system No Frostthen the presence of a fan in the design is inevitable. It is this that ensures the circulation of cold air through the chambers. Over time, ice can build up on the blades, which leads to imbalance and the appearance of a hum or crackling sound.
Often users notice that the noise intensifies precisely at the moment the defrost is turned on or immediately after it. This is due to the fact that the fan may touch ice. In such cases, it is often necessary to completely defrost the unit within 24 hours.
Foreign objects can also get into the rotation zone of the blades. Even a small piece of food or ice chips can cause an unpleasant rattling sound. Checking the free movement of the fan is an important part of the diagnosis.
How to check the fan without disassembling?
Remove the back plastic panel in the freezer (if the design allows) and carefully twist the blade by hand. It should rotate freely, without jamming or extraneous squeaking. If resistance is felt, the mechanism requires maintenance.
Why does the refrigerator gurgle and make sounds of overflowing water
One of the most common questions from owners is why something is constantly gurgling inside. The sound of overflowing liquid is caused by the movement of refrigerant (freon) through the system pipes. This is an absolutely normal physical process, especially noticeable in models with drip system defrosting.
When the compressor is turned off, the pressure in the system equalizes, and the gas continues to move, creating a characteristic “churning” or “gurgling” sound. If the refrigerator is new, these sounds may be heard more clearly until the system returns to operating mode.
However, if a hissing or whistling sound is added to the gurgling noise, this may indicate a freon leak. Where the tube is damaged, gas escapes under pressure, creating an acoustic effect. In such a situation you must immediately disconnect the device from the network and call a specialist to find a leak.
| Sound type | Probable cause | Do you need a technician |
|---|---|---|
| Quiet gurgling | Freon movement | No |
| Loud whistle | Refrigerant leak | Yes |
| Periodic clicking | Thermostat operation | No |
| Constant hum | Compressor wear | Yes |
Case vibration and installation problems
Often the reason for loud operation lies not inside, but outside. If Ariston refrigerator is installed unevenly, the vibration from the running motor is transmitted to the floor and walls, increasing many times over. This creates a resonance effect, which can be very annoying.
Check the adjustable feet. They should fit snugly to the floor, ensuring a stable position. It is also important that the case does not touch walls, furniture or other objects. The minimum gap should be 5–7 cm on all sides.
☑️ Vibration diagnostics
Sometimes rattling is caused by the rear grille itself (condenser) or other attached elements that have become loose during operation. Gently press the various parts of the case from behind with your hand - if the sound disappears, then you have found the source of vibration.
The influence of ice and the need for defrosting
Ice freezing is the enemy of quiet operation. A “fur coat” may form in the freezer or on the evaporator (which is hidden behind the panel). When the fan turns on or defrosts occur, pieces of ice may break off and fall, creating a knocking sound, or interfere with the rotation of the mechanisms.
If you have not defrosted the refrigerator for a long time, do so. Complete defrosting for 24 hours (with doors open) will help remove ice build-up in the drainage system and on the evaporator. This often solves the problem of loud fan humming.
⚠️ Warning: Do not use sharp objects or a hair dryer to speed up the defrosting of ice. Damage to the evaporator will result in costly repairs and loss of warranty.
Be sure to clean the drainage hole after defrosting. Its clogging leads to the fact that the water does not drain, freezes and creates additional noise when the system operates.
When it is necessary to call a technician for repairs
There are a number of symptoms that indicate that you will not be able to cope on your own. If compressor tries to start, it clicks and immediately stalls - this is a sign of a malfunction of the starting relay or the motor itself.
Also an alarming signal is the appearance of a burning smell in combination with loud operation. This may indicate overheating of the motor windings or problems with the wiring. In such cases, operating the device is dangerous.
A technician will be needed if:
- 🔴 The refrigerator hums louder than usual and does not turn off for days.
- 🔴 There is a metallic clanging or knocking sound inside the case.
- 🔴 There is a noticeable oil or refrigerant leak (greasy stains, smell).
- 🔴 The temperature in the chambers no longer corresponds to the established values.
Frequently asked questions (FAQ)
Is it normal for a new Ariston refrigerator to be loud?
In the first weeks of operation, the new unit may be noisier due to grinding in of compressor parts and lack of lubrication in moving parts. However, strong knocking or vibration is not the norm.
Why does the refrigerator hum loudly only at night?
During the day, extraneous noise can be masked by the household background. At night, in silence, you can hear the normal operation of the compressor or vibration transmitted to the floor. Check the installation and the distance to the walls.
Is it possible to lubricate the compressor to make it run quieter?
No, the compressor is a sealed unit that cannot be serviced at home. Lubricating the external tubes will not have an effect, and interfering inside will lead to breakdown.
What to do if after defrosting the noise does not go away?
If defrosting and checking the installation did not help, the problem lies in technical components: wear of the fan bearings, a compressor malfunction, or a violation of the refrigerant circulation. Diagnostics by a technician is required.