Does the refrigerator make noise like a cricket: normal or a signal of breakdown?

Modern refrigerators operate almost silently, but sometimes they begin to make strange sounds - crackling, squeaking, clicking or even chirpingresembling a cricket. If your unit suddenly starts singing a “serenade” in the middle of the night, do not rush to panic: in 80% of cases this is not a breakdown, but a feature of the system. But how to distinguish a harmless noise from a symptom of a malfunction?

Cricket sound is most often associated with thermal expansion of materials, work compressor, fans or No Frost systems. However, in rare cases, it can signal problems with starting relay, capacitor or even a refrigerant leak. In this article, we will analyze all possible causes - from harmless to critical - and provide a checklist for self-diagnosis.

It is important to consider refrigerator model and its age. For example, in LG Inverter Linear or Samsung Twin Cooling Plus cricket noise may be a consequence of the operation of an inverter compressor, and in older Atlantakh s - a sign of relay wear. If the sound appears after defrosting, moving or voltage surge, this is also a hint for finding the cause.

Do not ignore sounds if they are accompanied by:

• 🔥 Overheating of the case (especially from the side or back)
• ❄️ Insufficient cooling (products spoil faster)
• ⚡ Frequent shutdowns compressor
• 💧 Puddles under the refrigerator (leakage or condensation)

1. Thermal expansion: why the refrigerator “sings” like a cricket

The most harmless reason is temperature change inside and outside the refrigerator. Plastic parts, tubes, seals and even metal elements slightly change size when heated or cooled, which leads to crackling, clicks or quiet chirping. This process is called thermal extension and is absolutely normal for any equipment.

Most often such sounds occur:

• 🌡️ When first turn on after purchase or defrosting
• 🌞 In hot weather (if the refrigerator is located next to the stove or window)
• 🍧 When loading a large number of warm products (for example, after shopping)
• 🌙 At night, when the room is quiet and sounds become more noticeable

Critical moment: if the chattering noise is accompanied by vibration of the case or repeats cyclically (every 5-10 minutes), this may indicate a problem with the compressor or fan. In other cases, it is enough to move the refrigerator away from heat sources and make sure that it stands level (the adjustable legs should touch floor).

2. Compressor operation: inverter vs classic motor

The compressor is the “heart” of the refrigerator, and its operation is never completely silent. Depending on the type of motor, sounds may vary:

Classic (linear) compressor:

• 🔊 Emits dull humming when turned on
• 🛑 Sharply clicks when turned off (start relay is activated)
• 🔄 Work/rest cycles are clearly separated (pauses can be heard)

Inverter compressor (installed in LG, Samsung, Bosch latest generations):

• 🔇 It works almost silently, but can emit high-frequency squeak or cricket crackling change in speed
• 📉 The sound becomes quieter/louder smoothly (without sharp clicks)
• ⚡ Consumes less electricity, but is sensitive to changes voltage

If your refrigerator with an inverter began to “crackle” after power surge or lights out, the control board settings may have gone wrong. In this case, completely disconnecting from the network for 10–15 minutes will help (to reset errors).

How to check the type of compressor in your refrigerator?

1. Look at the technical data sheet (section "Compressor type").

2. In models LG the inverter is designated as Linear Inverter or Smart Inverter.

3. In refrigerators Samsung — Digital Inverter.

4. If there is no documentation, listen: a classic compressor works in cycles (hums for 10–20 minutes, then turns off), an inverter works continuously, with smooth noise control.

3. No Frost system: why you hear crackling and rustling

Refrigerators with No Frost (or Frost Free) are equipped with fans and heaters for automatic defrosting. These elements can create additional sounds:

Sources of noise in No Frost:

If sounds from the No Frost system become louder than usual, check:

• 🧊 Ice on the back wall (may block the fan)
• 🍂 Foreign objects in the air ducts (pieces of food, packaging)
• 🔧 Curvation of the fan blades (if the refrigerator was transported lying down)

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Attention! If after defrosting the refrigerator with No Frost began to make more noise, and ice appeared in the freezer - this is a sign defrost system malfunctions. In this case, replacement of the sensor, heater or control board is required.

4. Start relay and capacitor: clicks like a cricket

If the refrigerator makes noises rhythmic clicking (as if a cricket is “chirping” at regular intervals), the problem may lie in start relay or capacitor. These elements are responsible for starting the compressor, and their malfunction leads to the following symptoms:

Signs of relay/capacitor failure:

• 🔁 Compressor turns on for 1-2 seconds and turns off (repeated clicks are heard)
• 🔥 The refrigerator body gets very hot in the area of the motor
• ❄️ Temperature in the chambers rising, food defrosting
• ⚡ An error (for example, E1, F2 or a flashing light)

🛠️ How to check it yourself:

1. Disconnect the refrigerator from the mains.
2. Remove the back cover (in most models it is secured with latches or screws).
3. Inspect the relay (usually the black box next to the compressor) for evidence melting, cracks or gargaric smell.
4. Shake the capacitor (cylindrical part) - if you hear noise of rolling ballsit faulty.

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Attention! Replacing a relay or capacitor requires knowledge in electrical engineering. If you are not confident in your abilities, call a specialist. Incorrect installation can lead to a short circuit or failure of the compressor!

Disconnect the refrigerator from the mains

Remove the back cover (if necessary)

Inspect the relay for melting/cracks

Turn the compressor manually (should rotate freely)

Check the capacitor for swelling or noise when shaking

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5. Refrigerant leak: when cricket noise is dangerous

One ​​of the most serious symptoms is hissing or whistlingaccompanied by a cricket crackling sound. This may indicate freon leak (refrigerant), which leads to the following consequences:

Signs of a leak:

• 🧊 Refrigerator does not freeze well, but the compressor works without stopping
• 🔊 You can hear hissing in the area of the tubes (usually behind or below)
• 💨 An oily coating appears on the tubes or in the chamber oily coating (traces of refrigerant)
• 📉 Energy consumption increased sharply (the counter is spinning faster)

Leakage most often occurs in places pipe soldering or because circuit corrosion. In old refrigerators (Atlant, Stinol, Biryusa manufactured before 2010), the risk is higher due to natural wear and tear of the metal.

🔧 What to do:

• 🛑 Immediately turn off the refrigerator (freon is non-toxic, but its leakage impairs the operation of the system).
• 📞 Call a technician to detect the leak location (use a leak detector or soap solution).
• 🔄 After eliminating the leak, you will need recharging the refrigerant and evacuation of the system.

Critical information: if a leak occurs in the freezer, the products may be contaminated with oily freon vapors. Their use is not recommended!

6. External factors: why the refrigerator makes noise without breakdowns

Sometimes the reasons for the cricket noise lie not in the refrigerator itself, but in its surroundings. Check the following points:

Checklist of external causes:

• 🪑 Uneven floor: if the refrigerator is crooked, the vibration increases and the sounds become louder.
• 🔌 Poor contact of the plug: a loose connection in the socket can cause a cracking sound (especially if the wires old).
• 🧲 Magnetic interference: if there is a microwave, induction cooker or speakers nearby, they can affect the operation of the electronics.
• 🐭 Rodents or insects: mice often nest behind the refrigerator, and their rustling can be confused with a cricket sound.

🔹 How to eliminate:

1. Use rubber gaskets under the legs of the refrigerator to dampen vibration.
2. Connect the refrigerator through surge filter (especially if there are frequent power surges in the house).
3. Move the refrigerator 5-10 cm from the walls for better ventilation.
4. Check the back wall for the presence of debris or cobwebs (they can block ventilation).

7. When to call a specialist: 5 warning signs

Not all sounds require professional intervention, but there are symptoms that warrant Independent repair is dangerous. Contact the service center if:

Alarming signs:

• 🔥 The compressor heats up to a temperature that burns your hand (normal: slightly warm).
• ⚡ The refrigerator is electrocuted through the housing (a sign of insulation breakdown).
• 💧 There is a puddle of oil under the refrigerator (leakage from the compressor).
• 📛 The display shows an errorthat cannot be reset (E5, F1, ALARM).
• 🔊 The noise became louder after an impact or fall (the tubes may be damaged).

📌 How to choose a technician:

• Check whether the service center works with your refrigerator brand (some brands, for example Liebherr, require proprietary service).
• Check whether repair warranty (minimum 6 months).
• Ask if they use original spare parts (cheap services may use low-quality analogues).

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Attention! If the refrigerator is under warranty, do not open it yourself —this will void the warranty. Contact an authorized service center of the brand.

FAQ: Frequently asked questions about the noise of the refrigerator

❓ The refrigerator began to make noise like a cricket after moving. Is this normal?

Yes, if the sound appeared in the first 1-2 days after transportation. Reason - oil movement in the compressor or displacement of parts inside. Let the refrigerator stand for 12-24 hours in the off state, then turn it on. If the noise does not disappear after 3-4 days, check the fastening of the compressor and fan (the bolts may be loose).

❓ Why does a new refrigerator Samsung with No Frost crackle like a cricket?

In models Samsung RB or RF cricket noise may be associated with operation inverter compressor or fan No Frost. This is normal if:

• The sound is not louder than 40 dB (like a quiet conversation)
• No vibration of the case
• The temperature in the chambers is maintained stably

To check the noise level, use a sound meter application (for example, Decibel X).

❓ Is it possible to replace the start relay yourself if the refrigerator does it click?

Theoretically, yes, but only if you have experience working with electrical engineering. To replace you will need:

1. Disconnect the refrigerator and discharge the capacitor (to avoid electric shock).
2. Remove the old relay and install a new one (it is important to choose a model with identical parameters).
3. Check the circuit with a multimeter (the resistance of the compressor windings should be 15–40 Ohms).

⚠️ Danger! Incorrect installation can lead to compressor burnout (replacing it will cost 50–70% of the cost of a new refrigerator).

❓ The refrigerator Atlant is noisy and does not freeze. What's the matter?

In the old ones models Atlant (for example, MHM-1708 or MX-2824) cricket noise with cooling failure most often indicates:

• Freon leak (refilling required)
• Clogged capillary tube (needs cleaning or replacement)
• Thermostat malfunction (checked with a multimeter)

These refrigerators are not equipped with self-diagnosis, therefore the exact cause can only be determined by a technician with a pressure gauge and leak detector.

❓ How to reduce the noise of a refrigerator at night?

If sounds interfere with sleep, try:

• 🔕 Rearrange the refrigerator in non-residential premises (pantry, corridor).
• 🛏️ Use white noise (fan, noise generator) for masking.
• 🔧 Place under the legs shock-absorbing pads (sold in hardware stores).
• 🌡️ Install night mode (if it is in the settings, for example, in Liebherr or Bosch).

⚠️ Do not turn off the refrigerator at night - this will lead to defrosting of food and the risk of poisoning!