The refrigerator is cracking: what does it mean and how to eliminate the noise - a detailed analysis

Have you noticed that your refrigerator has started making strange sounds - clicking, crackling, or even a loud cracking sound? Do not rush to panic: in 80% of cases this is a normal phenomenon associated with the operation of the compressor or thermoregulation. But sometimes a cracking noise signals serious malfunctions that can lead to equipment failure. In this article we will analyze all the possible reasons why refrigerator is cracking- from harmless to critical, and also give step-by-step instructions on how to eliminate the noise yourself or when you should call a specialist.

Modern models of refrigerators (Samsung No Frost, LG Inverter, Indesit, Atlant) often work quieter than old Soviet ones units, but even they are not free from extraneous sounds. It is important to learn to distinguish normal crackling (for example, when the compressor is turned on) from pathological crackling (creaking parts, fan hitting ice). We have collected the experience of specialists with 10 years of experience and user reviews to help you diagnose the problem as accurately as possible.

1. Normal refrigerator sounds: when the crackling sound is not dangerous

The first thing you need to understand: any refrigerator makes sounds is part of its work. Even the quietest models (Bosch KIN86VF30R, Liebherr CN 4015) cannot operate absolutely silently. Let's consider what sounds are considered normal and why they occur:

• 🔄 Relay clicks -short metallic sounds when the compressor is turned on/off (every 10-20 minutes). This triggers the start-protection relay, which starts the motor.
• ❄️ Plastic cracking - when the temperature changes, the body parts are slightly deformed (especially in new refrigerators for the first 2-3 weeks).
• 💨 Fan noise - in models with No Frost The fan turns on periodically to distribute the cold evenly (the sound is similar to a faint hum).
• 🔥 Gurgling of freon - when the refrigerant moves through the pipes, sounds similar to liquid pouring may occur.

How to distinguish a normal crack from a breakdown? Pay attention to regularity and volume sounds:

• ✅ Normal: sounds are repeated at equal intervals, do not increase over time, are not accompanied vibration.
• ❌ Pathology: the crackling becomes louder, creaking, knocking appears, the refrigerator begins to “twitch” or freeze poorly.

2. TOP 5 reasons why the refrigerator is cracking abnormally

If the sounds become too loud, irregular, or are accompanied by other symptoms (poor freezing, puddles under the refrigerator), it’s time to sound the alarm. Here are the main reasons pathological crackling:

Critical symptom: if the cracking sound is accompanied by the smell of burning or smoke, immediately unplug the refrigerator! This may indicate a short circuit in the compressor winding.

⚠️ Attention: In refrigerators with a No Frost system (for example, Samsung RB37J5230SA, LG GA-B489YGQZ), the crackling sound is often associated with icing of the fan. If the problem is not corrected in time, this may lead to damage to the fan motor (replacement cost starts from 3,500 rubles).

3. How to diagnose the problem yourself

Before calling a technician, try to carry out an initial diagnosis. Here is a step-by-step algorithm:

1. Disconnect the refrigerator from the mains for 10-15 minutes, then turn it on again. If the cracking noise disappears, the problem was a temporary failure of the relay.
2. Check the back wall:
   • 🔍 Inspect the compressor (black cylinder at the bottom) - it should not be loose.
   • 🧊 Make sure there is no ice on the tubes (especially in models No Frost).
3. Listen to the sounds:
   • 🎧 Place your ear on the body (or use a glass as a stethoscope). Clicks on the right/left are a thermostat, below is a compressor.
   • 🔊 Record the sound on your phone and compare with examples on the Internet (for example, “the sound of a faulty refrigerator compressor”).
4. Check the temperature:
   • ❄️ If the freezer is working, but the refrigerator is not, the problem is in the thermostat.
   • 🌡️ Use a thermometer: the norm for the refrigerator compartment is +4°C, for the freezer -18°C.

Turn off the refrigerator for 15 minutes and turn it on again|

Check the compressor fastening (whether it is loose)|

Inspect back wall for ice|

Record the sound and compare with standards|

Check the temperature in the chambers with a thermometer -->

If after these steps the cracking does not disappear, proceed to the next section with instructions for elimination.

4. Step-by-step instructions: how to fix the cracking noise yourself

Many problems can be solved without calling a specialist. Below are detailed instructions for the most common cases.

4.1. Icing of the fan (for No Frost models)

Symptoms: crackling, grinding, periodic knocks, poor circulation. air.

Reason: ice on the fan blades prevents it from rotating.

1. Unplug the refrigerator.
2. Remove all food from the freezer.
3. Open the back panel of the freezer (usually secured with latches or screws).
4. Carefully remove the ice from the fan blades with a plastic spatula (do not use metal objects!).
5. Check whether the fan rotates freely by hand. If not, replacement may be required.
6. Turn on the refrigerator and check if the cracking noise has disappeared.

4.2. Wear of compressor shock absorbers

Symptoms: rattling, knocking when the motor is running, the refrigerator “walks” on the floor.

Cause: rubber gaskets under the compressor have lost their elasticity.

Solution:

1. Unplug the refrigerator and move it away from the wall.
2. Remove the bottom protective panel (usually secured with 2-4 screws).
3. Check the condition of the rubber feet of the compressor. If they are cracked, this is required. replacement.
4. Buy new shock absorbers (universal for your model or original, for example, for Atlant MXM 1705-80 - art. 2401000013).
5. Install new gaskets, secure the compressor and check if the knocking noise disappears.

⚠️ Attention: If the compressor does not just rattle, but “beats” against the housing, this can lead to damage to the freon tubes. In this case, it is better not to risk it and call a specialist - repairs will cost less than replacing the compressor (from 8,000 rubles).

4.3. Malfunction of the thermostat

Symptoms: frequent clicks (every 1-2 minutes), the compressor works without stopping or, conversely, does not turn on.

Cause: the thermostat or temperature sensor is broken.

Solution for refrigerators with a mechanical thermostat (for example, Biryusa 130, Stinol 102):

1. Turn off the refrigerator.
2. Remove the thermostat knob (usually it is simply removed or unscrewed).
3. Under it you will see a plastic box with wires - this is the thermostat.
4. Disconnect the wires (take a photo of their location!) and check the contacts with a multimeter in continuity mode.
5. If the contacts do not close/open when turning the knob, the thermostat is faulty.
6. Buy a new thermostat (for example, K59-L1938 for Stinola or WDF19 for Atlant) and install it in the reverse order.

For models with electronic control (Samsung RL38NCSW, LG GB-B459SLQZ), you will need to diagnose the control board - here it is better to contact a specialist.

5 When to call a specialist: 3 critical cases

Some breakdowns cannot be repaired on your own without special tools and skills. Here are situations when professional help is definitely needed:

• 🔧 Freon leakage: if you notice oily spots on the floor or pipes, and the refrigerator has stopped freezing, this is a sign of depressurization of the system. Independent soldering of tubes without evacuation of the system will lead to a repeated leak within 1-2 months.
• ⚡ Problems with the compressor: if the motor hums but does not start, or vice versa - it works without stopping and overheats, the compressor will need to be replaced or repaired (cost from 5,000 to 15,000 rubles depending on the model).
• 🔌 Electronic malfunction. boards: in refrigerators with a display (for example, Liebherr CBP 4066) malfunctions can be associated with microcircuits. Self-repair of the board without a circuit and soldering equipment is almost impossible.

How to choose a good specialist?

• 🔍 Check reviews on Yandex.Services or Profi.ru (rating above 4.7 and at least 50 reviews).
• 💰 Compare prices: the average cost of diagnostics is 1,000–1,500 rubles, repairs - from 2,000 rubles.
• 📄 Check if they provide guarantee for the work (minimum 6 months).
• 🚗 Does the technician come with spare parts or will you need to pay separately for the parts?

⚠️ Attention: Be careful with “masters” who offer to fill the refrigerator with freon without vacuuming the system. This is a temporary solution that will lead to a repeated leak in 3-6 months. Correct. refilling includes: evacuation, leak testing, refrigerant charging and test run.

6. Prevention: how to prevent cracking in the future

To keep your refrigerator running quietly and for a long time, follow these recommendations:

• 🧊 Defrost regularly:
  • For No Frost: once every 6 months (even if the manufacturer claims that it is not necessary).
  • For drip models (Atlant MX 2824, Indesit DF 4180): once every 3 months.
• 📏 Keep the gaps:
  • The distance to the wall is at least 5 cm (for ventilation of the compressor).
  • Do not place the refrigerator next to the stove or radiator.
• ⚖️ Control the load:
  • Do not overload door (maximum 5 kg per door shelf).
  • Distribute food evenly so as not to upset the balance.
• 🔌 Monitor the power supply:
  • Use a surge protector to protect against power surges.
  • Do not connect the refrigerator through an extension cord - only directly into the outlet.

For models with an inverter compressor. (LG GA-B489YGQZ, Samsung RB37J5230SA) it is especially important to follow the operating rules:

• Do not set the temperature below -20°C in the freezer - this increases the load on the compressor.
• Avoid frequent opening of the door in hot weather.
• Vacuum the rear grille 1 time in 3 months (accumulation of dust impairs heat transfer).

7. Frequently asked questions about refrigerator cracking

🔹 Why does a new refrigerator crack in the first days?

This is a normal phenomenon! In new refrigerators, plastic parts of the case adapt to temperature changes. The cracking should disappear after 1-2 weeks. If the sounds do not go away for more than a month, check the compressor mount and shock absorbers.

🔹 Is it possible to use a refrigerator if it is cracking but freezing?

It is possible, but with reservations:

• If the cracking is not accompanied by other symptoms (poor freezing, puddles, vibration) - observe for 2-3 days.
• If the sounds intensify or new problems appear, turn off the refrigerator and call a technician.

Remember: ignoring the crackling sound can lead to costly repairs. For example, icing of the fan will damage the motor in 1-2 months. (replacement price - from 3,500 rubles). No Frost in 1-2 months the motor will fail (replacement price - from 3,500 rubles).

🔹 How to distinguish the crackling of a compressor from the crackling of a fan?

Simple test:

1. Open the refrigerator door.
2. If the crackling stops, the problem is in the fan (it turns off when the door is open).
3. If the crackling continues, the source is in the compressor or thermostat.

Also pay attention to the localization of the sound:

• 🔽 Below - compressor or shock absorbers.
• 🔽 Rear in the top part is a fan.
• 🔽 On the right/left is a thermostat or relay.

🔹 How much does it cost to repair if a refrigerator is cracking?

The cost depends on the cause:

Problem	Repair cost (RUB)	Cost of spare parts (RUB)
Replacement of compressor shock absorbers	1 500–2 500	300–800
Cleaning or replacement of fan	2 000–3 500	1 500–3 000
Replacement of thermostat	1 800–2 500	800–1 500
Compressor repair	5 000–10 000	4 000–8 000
Freon leak elimination + refilling	4 000–7 000	2 000–4 000

Prices are relevant for Moscow and the Moscow region. In the regions, the cost may differ by 15-20%.

🔹 Why does the refrigerator crack at night, but not during the day?

This is due to two factors:

1. Temperature fluctuations: at night the temperature in the room drops, and the plastic parts of the case compress, making a cracking noise.
2. Compressor operating mode: in the quiet at night, sounds are heard that are drowned out by household appliances during the day. Perhaps the compressor turns on less often. during the day due to less door opening.

Solution:

• Check whether the refrigerator is located next to a radiator or window (temperature differences increase the crackling sound).
• Set the night mode, if your model has it (for example, Samsung RB37J5230SA has the function Good Night).