Refrigerator owners Samsung often encounter unexpected sound effects: crackling, clicking or loud pops. These sounds can appear both during active operation of the compressor and at rest. But how to distinguish a normal “conversation” of equipment from an alarm signal about a malfunction? In this article, we will analyze all the possible causes of the crackling sound - from harmless design features to serious breakdowns that require the intervention of a technician.
It is important to understand that modern refrigerators Samsung (especially models with the system No Frost and inverter compressors) are more complex than their predecessors. There is a lot to “click” here: from thermostats to electronic control boards. At the same time, some sounds are indeed within the scope of factory standards - they can even be found in the manufacturer’s official instructions.
But if the cracking is accompanied by other symptoms - for example unstable temperature, constant operation of the compressor or appearance of ice in the wrong places - this is a cause for concern. Next, we will analyze each case in detail so that you can accurately determine whether it is worth calling a service engineer or you can sleep peacefully.
1. Normal sounds: when the cracking sound is not dangerous
The manufacturer Samsung openly admits that their refrigerators can make various sounds during operation. The technical documentation for models RB37J5230SA, RF23A9671SG and others states that crackling noises are considered “normal operating noises.” Here are the main sources of harmless crackling:
- 🔄 Thermoregulator (thermostat): when the contacts are activated, a characteristic click is heard. This happens when the compressor is turned on/off to maintain the set temperature.
- ❄️ No Frost System: during automatic defrosting, ice breaks off from the evaporator, which may be accompanied by a cracking sound or the noise of falling pieces.
- 🧊 Plastic body parts: when the temperature changes, the plastic slightly deforms, producing a crackling sound (especially noticeable in new refrigerators during the first 1-2 weeks).
- 🔌 Relay compressor: when the motor starts, the starting relay is activated, which is accompanied by a loud click.
As a rule, such sounds short-term, irregular are not repeated with alarming frequency. They may intensify in the first days after connecting the refrigerator or after a long period of inactivity (for example, after a vacation). If there are no other signs of malfunction besides the crackling sound, there is nothing to worry about.
2. Cracking due to malfunctions: when to sound the alarm
If the sounds become cyclical, loud or are accompanied by other symptoms, this may indicate a breakdown. Pay attention to the following signs:
- ⚡ Crackling noise + constant operation of the compressor: the refrigerator may be broken temperature sensor or thermostat, and the refrigerator is unsuccessfully trying to cool the chamber.
- 🔥 Loud popping noises when turned on: may indicate problems with the starting relay or turn-to-turn short circuit in the compressor.
- ❄️ Crackling + ice on the rear wall: sign malfunction of the defrosting system (heating element burnt out, timer or defrost sensor broken).
- 💥 Sharp metallic sounds: may indicate breakage fan (in models with No Frost) or loose compressor fastenings.
Critical moment: if the crackling sound is accompanied by a burning smell or smoke, immediately unplug the refrigerator! This may be a short circuit in the electrical circuit.
⚠️ Attention: In refrigerators Samsung with a display (models Family Hub, Bespoke), a cracking noise may come from electronic control board. If the sounds are accompanied by blinking indicators or malfunctions of the display, diagnostics of the board is required.
| Symptom | Probable cause | What to do |
|---|---|---|
| Crackling noise when turned on + the compressor does not start | Faulty starting relay | Replace the relay (the part costs ~800-1500 ₽) |
| Cyclic crackling every 10-15 minutes | Problems with the temperature sensor | Check the sensor with a multimeter, replace if necessary |
| Crackling noise + ice on the back wall of the freezer | The system does not work defrosting (heating element or timer) | Diagnose the defrosting circuit, replace burnt elements |
| Loud popping noises when the compressor stops | Weak compressor shock absorbers | Tighten the fasteners or replace the rubber ones dampers |
3. Cracking in Samsung refrigerators with No Frost: system features
Models with technology No Frost (for example, Samsung RB30J3000WW, RF24FSEDBSR) have additional components that can become a source of extraneous sounds. Unlike drip refrigerators, there is:
- 🌀 Blowing fan —the blades can touch ice or foreign objects.
- 🔥 Defrost heating element —when heated/cooled, it produces a crackling sound (especially if covered with a layer of dust).
- ⏱️ Defrost timer - a mechanical relay that clicks when switching modes.
A common problem in systems No Frost — fan icing. If ice accumulates on the blades, they begin to touch the body, producing a rhythmic cracking sound. In this case, defrosting the refrigerator for 12-24 hours will help. If the problem recurs, you need to check the defrosting system.
How to check the No Frost fan without disassembling?
Open the freezer and listen: if the cracking stops when the door is open, but resumes after 1-2 minutes, the problem is in the fan. This is due to the fact that when the door is open, the fan automatically turns off.
4. Cracking in Samsung inverter refrigerators: why does this happen
Inverter compressors (installed in models Samsung RT-43K6030SL, RB38T602CSR etc.) operate on a different principle than conventional ones. They do not turn on/off, but smoothly regulate power. However, extraneous sounds are also possible here:
- 🔄 Inverter clicks when the frequency changes - a normal phenomenon associated with the operation of power electronics.
- ⚡ Crackling noise during a sudden change in load - may indicate unstable voltage in the network (inverters are sensitive to changes).
- 🛠️ Metal knocking - sometimes appears when the compressor bearings are worn out (requires replacement of the unit).
Feature of inverter models: they sensitive to the quality of the power supply. If your network experiences frequent power surges, the crackling noise may be due to the compressor protection tripping. In this case, installing voltage stabilizer will help..
⚠️ Attention: If the inverter refrigerator Samsung started to crack after power outages or voltage surges, do not rush to turn it on again! Allow the compressor to cool for 10-15 minutes - this will protect the electronics from damage.
5. Diagnosis of cracking: step-by-step instructions
To accurately determine the cause of the cracking, carry out self-diagnosis. You will need: a flashlight, a screwdriver (for some tests) and a multimeter (optional). Follow this algorithm:
Determine the localization of the sound (front/rear, top/bottom)
Check whether the cracking depends on the operation of the compressor
Inspect the back wall for the presence of ice (for No Frost)
Listen to the fan with the freezer door open
Check the compressor mounts (with the refrigerator turned off)-->
Step 1. Sound localization
Put your ear to different parts of the refrigerator (or use a glass as a stethoscope):
- Top —most likely, the problem is in fan or No Frost system.
- Bottom rear —check compressor and start relay.
- Side —may crack plastic housing or refrigerant pipes.
Step 2. Checking the dependence on the operation of the compressor
If a crackling noise appears only when starting/stopping the compressor — The relay or the motor itself is to blame. If the sound not related to the operation of the compressor - look for a problem in No Frost system or electronics.
Step 3. Visual inspection
Unplug the refrigerator and inspect:
- The rear wall of the freezer for the presence of ice (for No Frost).
- Compressor mounts - if they are loose, the motor will vibrate and knock on the housing.
- Fan (in models with No Frost) - check whether it touches ice or wires.
6. How to fix cracking yourself
Some problems can be solved without calling a specialist. Here's what you can do yourself:
- 🔧 Tighten the compressor fastenings: loose bolts cause vibration and knocking. Use a 10 or 12 mm wrench (depending on the type). model).
- ❄️ Defreeze the refrigerator: if the cracking sound is associated with ice in the system No Frost, complete defrosting for 24 hours often solves the problem.
- 🔌 Check the mains voltage: if socket less than 200V or more than 240V, install a stabilizer.
- 🧹 Clean fan: in models with No Frost dust and ice on the blades can cause cracking. Carefully remove obstacles with a cotton swab.
For more complex problems (replacing relays, sensors, defrosting heating elements) you will need spare parts and electrical skills. If you are not sure, it is better to call a service engineer. The cost of diagnostics at official service centers Samsung starts from 1500 ₽, repairs - from 2500. ₽ (depending on the breakdown).
7. call a technician: signs of serious damage
There are situations where independent repair is unacceptable or simply dangerous. Contact the service center if:
- ⚡ A cracking sound is accompanied by sparking or burning smell —this is a sign of a short circuit.
- ❄️ Refrigerator not freezesbut is constantly cracking - a freon leak or compressor breakdown is likely.
- 🔄 Error codes appear on the display 💥 There was a crackling noise (for example,
5E,8Efor models Family Hub). - 💥 The crackling began louder after an impact or fall refrigerator - the refrigerant tubes could be damaged.
In official service centers Samsung diagnosis takes 1-2 days Average prices for repairs (in Moscow and regions for 2026. year):
| Breakage | Repair cost (₽) | Completion time |
|---|---|---|
| Replacement of starting relay | 1 800 — 3 500 | 1 day |
| Repair No Frost systems (heating element + timer) | 4 000 — 7 000 | 2-3 days |
| Replacement of the compressor | 8 000 — 15 000 | 3-5 days |
| Diagnostics of the electronic board | 2 500 — 5 000 | 2 days |
⚠️ Attention: If your refrigerator Samsung is under warranty (usually 1-2 years), do not disassemble. do it yourselfThis will void the warranty. Contact an authorized service center with a receipt and warranty card.
Frequently asked questions
My Samsung refrigerator only cracks at night. Is this normal?
Yes, this may be normal. At night the room is quieter, and sounds that are drowned out by household noises during the day become more noticeable. If the cracking is not accompanied by other symptoms (ice, ice, etc.). poor cooling), there is no need to worry. Try moving the refrigerator away from the sleeping place or using soundproofing pads under the legs.
After defrosting, the cracking disappeared, but after a week it returned. What should I do?
This is typical. sign malfunction of the defrosting system in refrigerators No Frost. Most likely, it does not work defrosting heating element or timer. Diagnostics and replacement of burnt elements is required. A temporary solution is to defrost the refrigerator once every 1-2 months, but this will not eliminate it. reason.
Crackling appeared after the move. Could this be related to transportation?
Yes, the most likely. reasons:
- Loose compressor mounts (bolts need to be tightened).
- Damaged refrigerant pipes (check for leakage required).
- Displaced electronic board (in models with a display).
We recommend calling a technician to check - transportation without following the rules (for example, in a lying position) often leads to to hidden breakdowns.
Is it possible to replace the start relay in a Samsung refrigerator yourself?
Yes, this is one of the simplest procedures for you. you will need:
- Disconnect the refrigerator from the network.
- Remove the back cover (usually secured with 4-6 screws).
- Disconnect the contacts from the old relay (take a photo of the connection diagram!).
- Install a new relay (for example, Samsung DA97-08323A for most models).
- Check the operation of the compressor.
How much does it cost to diagnose a cracking sound in a service center Samsung?
The cost of diagnostics in official service centers:
- 1 500 — 2 500 ₽ — basic check (without disassembly).
- 3 000 — 5 000 ₽ — deep diagnostics with disassembly and testing of electronics.
If you agree to repair, the cost of diagnostics is usually included in the final price. Check with the operator for details when making an appointment.