The refrigerator clicks: when is this the norm, and when is it a signal of distress?

You are standing in the kitchen at night, and suddenly there is a loud noise. click from the refrigerator. My heart skips a beat - what is this? Breaking? Or does the unit just “talk”? In fact, clicks can be either a completely normal phenomenon or the first sign of a serious malfunction. In this article we will analyze all possible reasonsfrom harmless to critical, learn to distinguish them by the nature of the sound and tell you when you can sleep peacefully and when to urgently call the repairman.

Immediately Let's reassure: most clicks (up to 80% of cases) are associated with the operation of a thermostat, relay or compressor - these are normal sounds that do not require intervention. But there are also exceptions. For example, if clicks are accompanied by cooling failure, motor overheating or flashing indicators , this is already a cause for concern. Next is a detailed analysis with examples from the practice of service centers.

1. Normal clicks: what does a “healthy” refrigerator sound like

Any refrigerator is a complex system with electromechanical components. Many of them make characteristic sounds when operating. This is what is considered the norm:

• 🔊 Click when turning the compressor on/off. This works start-up protection relay - it completes the circuit to start the motor. The sound is short, single, repeated at intervals of 10–20 minutes (depending on the cooling mode).
• ⚡ Quiet clacking of the thermostat. When the temperature in the chamber reaches the set value, the thermostat opens the circuit and a soft click is heard. The frequency depends on the load (for example, after loading warm products, the sound becomes more frequent).
• ❄️ Clicks during auto defrost (in models with No Frost). This triggers the defrost timer - it turns on the evaporator heater. The sound can be repeated every 6–12 hours.

How to distinguish a normal click from a problem one? Pay attention to rhythmicity and associated symptoms:

• ✅ Normal: a single sound, after which the compressor begins to hum (or, conversely, subsides).
• ❌ Problem: frequent clicks (every 1-2 seconds), the compressor does not start, or the refrigerator does not cool.

If your refrigerator falls into the first category, you can exhale. But let's figure out what to do if the clicks seem suspicious.

2. Clicks + compressor does not start: top 3 reasons

The most alarming situation is when the refrigerator clicks, but does not freeze. This means that the electrical circuit opens, preventing the engine from starting. There are three culprits here:

1. Faulty start-up relay. The relay “sticks” or its contacts are burnt. At the same time, you can hear multiple clicks in a row (the engine tries to start, but the chain breaks). Often the problem is accompanied by a burning smell.
2. Burnt compressor. If the motor is stuck, the relay clicks, trying to start it, but to no avail. In this case, the compressor housing may be hot.
3. Problems with the thermostat. If the thermostat gives incorrect signals, the relay may operate chaotically. For example, the refrigerator clicks every 5 seconds, but there is no cooling.

How to diagnose? Carry out a simple test:

Unplug the refrigerator for 5 minutes, then turn it on again|Count the number of clicks in 1 minute (norm - 1-2, problem - 5+)|Check if the compressor heats up (touch its body with your hand)|See if the light inside the chamber is on (if not, there is a power problem)-->

If the compressor does not start at all, and the clicks repeat as if in a cycle, the relay is most likely to blame. Replacing it will cost 1,500–3,000 rubles (depending on the model). If the motor hums, but does not start, or the body is hot, this is clinical case, and you cannot do without a specialist.

⚠️ Attention: Do not try to disassemble the start-protection relay yourself, if you have no experience! In some models (for example LG Inverter Linear or Samsung Digital Inverter) the relay is integrated into the control board - careless intervention can damage all electronics.

3. Clicking noises during operation: when this is a sign of wear

Sometimes the refrigerator clicks during compressor operationand not when it is turned on/off. This may indicate:

• 🔧 Wear of the motor bearings. If the clicks are rhythmic, like a metronome, and are accompanied by vibration, the compressor shaft bearings may be worn out. Over time, this will lead to jamming.
• ⚡ Problems with the compressor winding. When there is an interturn short circuit, the motor “stumbles” and the relay is activated for protection. The sound is similar to a series of short clicks with pauses.
• 🧊 No Frost fan malfunctions. In models with the system No Frost clicks may come from the fan blades touching the ice or body. This is usually accompanied increased noise when the door is opened.

How to check? Open the refrigerator door and listen:

• If clicks increased the problem is in the fan or evaporator freezing.
• If clicks have not changed the compressor is to blame or relays.

In the case of a fan, you can try defrost the refrigerator for 12-24 hours. If after turning on the clicks disappear, the problem was in the ice. If not, you will need to replace the fan (from 2,000 rubles) or compressor (from 5,000 rubles).

What will happen if you ignore the clicks of the compressor?

If you ignore bearing wear or interturn short circuits, the compressor may jam. In this case, a complete replacement of the motor will be required, and the cost of repairs will be close to the price of a new refrigerator (especially for premium models, for example, Liebherr or Bosh Serie 8).

4. Clicks + blinking light: problems with electronics

If the refrigerator not only clicks, but also the indicator flashes. data-i="142">Symptom (or an error appears on the display), the problem is in the electronics:

In modern refrigerators (for example, Samsung Family Hub or LG ThinQ) electronics may fail due to power surges. If clicking and blinking started after lights out or thunderstorm, try resetting the settings:

1. Unplug the refrigerator for 5-10 minutes.
2. Plug it back in and wait 1-2 hours (the system should reboot).
3. If the error persists, contact service.

⚠️ Attention: Do not try to “reflash” the control board yourself! In refrigerators with inverter compressors (for example Hitachi Inverter), incorrect firmware can damage the motor. This will lead to repairs at 15,000–25,000 rubles.

5. Clicking noises in new refrigerators: when it’s not a breakdown

If your refrigerator new (up to 1-2 months of operation) clicks, this may be a feature of the model. For example:

• 🆕 Inverter compressors (LG, Samsung, Haier) work almost silently, but when switching modes they can make clicks. This is normal - this is how the system of smooth power control works.
• ❄️ Systems Total No Frost (for example, in Bosch KAN92VI30R) have additional valves and dampers that click when redistributing cold air.
• 🔋 Energy saving modes. Some models (for example, Liebherr Premium) click when switching to Eco or Holiday.

How can you tell that this is not a breakdown? Take a look at instructions for the model - manufacturers usually indicate “permissible noise”. Also pay attention:

• Are the clicks rhythmic and repeated at the same interval? This is the work of electronics.
• Does the sound appear when temperature change in the camera? This triggers the thermostat or dampers.

If the refrigerator is new, but the clicks seem too loud, check if it is correct installed. Vibration from an uneven floor or close to a wall can amplify sounds. Use rubber gaskets under the legs or adjust the level.

6. Clicks + other strange sounds: what do they mean

Sometimes clicks are accompanied by additional noise creaking, humming, crackling or gurgling. Let's figure out what this means:

Sound	Probable cause	Do I need to worry?
Click + humming	Compressor starts (normal)	✅ No
Click + creaking	Fan bearings worn out or compressor	❌ Yes, requires diagnostics
Clicking + gurgling	Refrigerant circulation (normal for models with linear compressor)	✅ No
Click + crackling	Evaporator freezing or broken plastic parts	❌ Yes, defrost the refrigerator
Click + squeak	Alarm has tripped (for example, the door is open)	✅ Check the door and seal

Especially dangerous creaks and crackles —they often indicate mechanical wear. For example, in refrigerators Indesit or Ariston over the years, the compressor mount may become loose and it begins to vibrate, touching the housing. In this case, replacing the shock absorbers will help. tightening the fasteners or replacing shock absorbers.

If clicks are accompanied by burning smell immediately unplug the refrigerator. This may be a sign of overheating of the compressor winding or short circuit c! relay. Further operation is dangerous!

7. How to reduce the noise of the refrigerator: 5 practical tips

If the clicking is not related to a breakdown, but is still annoying, try these methods:

1. Adjust the legs. Uneven installation increases vibration and noise. Use a level and rubber gaskets.
2. Check the door sealIf it is worn out, the compressor runs longer and clicks. become more frequent. Wipe the seal with silicone grease or replace it.
3. Do not place the refrigerator close to the wall. The minimum gap is 5 cm. This will improve air circulation and reduce the load on the door. compressor.
4. Defrost the refrigerator. In models with No Frost ice on the evaporator can cause extraneous sounds.
5. Use a voltage stabilizer. the relay operates more often. This is important for houses with old wiring.

If clicks appear after moving or transportationlet the refrigerator stand 4–6 hours before turning it on. it is necessary that the oil in the compressor flows downwards (otherwise the motor may malfunction).

Frequently asked questions about clicking noises in the refrigerator

The refrigerator clicks every 5 seconds - what is it?

This is a sign a faulty start-up relay. data-i="271">jammed compressor or jammed compressor. The relay tries to start the motor, but the circuit opens due to overheating or mechanical blocking. Immediately disconnect the refrigerator from the network and call a technician - further operation in this mode may lead to fire.

Why does the new Samsung refrigerator click louder than the old one?

In modern models Samsung (especially with Digital Inverter) the clicks are associated with operation electronic control unit i linear. compressor. They are optimized for energy saving, but when switching modes they can make more noticeable sounds than older refrigerators with a mechanical thermostat. This is normal and does not require repair.

The refrigerator clicks and does not turn on after the light is turned off. What should I do?

Most likely it worked. Try: power surge protection. Try:

1. Disconnect the refrigerator from the network for 10 minutes.
2. Plug it back in - if the clicking continues, but the motor does not start, check surge filter or stabilizer.
3. If the problem persists, the relay or control board may have burned out. Diagnostics is required.

In the future, use surge protector to protect against voltage surges.

Is it possible to replace the start-up protector yourself? relay?

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

• Disconnect the refrigerator and discharge the capacitor (to avoid electric shock!).
• Remove the relay cover (usually secured with latches or screws).
• Disconnect the wires, remembering their location (it’s better to take a photo!).
• Install a new relay (for example, RBM-1 for Atlant or 393A001256 for Indesit).

⚠️ Caution: In inverter refrigerators, the relay is often integrated into the board - replacing it may require soldering.

The clicks are stronger at night - why?

At night the house is quieter, so any sounds seem louder. But there are also objective reasons:

• The temperature in the room drops → the compressor turns on less often, but the relay clicks become more noticeable.
• Humidity rises → plastic parts may be slightly deformed, producing a cracking noise.
• If the refrigerator is standing nearby with heating battery, night cooling of the radiators can cause clicks in the case.

Solution: move the refrigerator away from heat sources and check the door seal.