Have you pulled the refrigerator plug out of the socket, and after a few seconds there was a loud click? Or did the device spontaneously disconnect from the network with a characteristic sound? Such situations frighten many users - it seems that the equipment is about to break. In fact, clicks after switching off can be either a variant of the norm or the first symptom of a malfunction.
In this article we will analyze in detail all the possible causes of clicks - from harmless features of the compressor to serious breakdowns requiring repair. You will learn how to distinguish normal sound from an alarm signal, which models of refrigerators (Indesit, Samsung, Atlant, LG) most often “click” after turning off, and what to do if the sounds are accompanied by other problems (for example, the motor does not start or the light is blinking).
Spoiler: in 60% of cases the clicks are not dangerous, but there are 3 critical situations when the refrigerator needs to be urgently disconnected from the network and call a technician. In order not to miss them, read the article to the end - there awaits you checklist for self-diagnosis and the answers to the question. frequently asked questions.
1. Why the refrigerator clicks after it is turned off: the physics of the process
The click is mechanical soundwhich occurs when there is a sudden change in the state of the parts. In the refrigerator, three key parts are responsible for it. node:
- 🔌 Start-protective relay —a compressor “switch” that opens the contacts when the power is turned off.
- ⚙️ Compressor —its internal valves and piston can make sounds when stopped.
- 🌡️ Thermostat —in some models it clicks when activated (for example, Danfoss KP).
When you pull the plug from the socket or occurs emergency shutdown (for example, during a power surge), all these nodes stop instantly. Due to the inertia of moving parts and the discharge of capacitors, a characteristic click occurs in the relay. This is normal if:
- 🔊 Sound single (not repeated many times).
- ⚡ Refrigerator does not try to turn on again (no click-buzz-click cycles).
- ❄️ Temperature in the chambers saved (no sharp warming).
Critical point: if clicks are accompanied by a burning smell or smoke from the rear panel, immediately unplug the refrigerator and do not turn it on until examined by a technician.
2. clicks vs. dangerous: how to distinguish
In order not to panic in vain, compare the behavior of your refrigerator with the table below. Pay attention to frequency of clicks, sounds and reaction of equipment after shutdown.
| Symptom | Normal | Potential malfunction |
|---|---|---|
| Number of clicks | 1–2 times (when turned off and stopping the fan, if any) | Multiple clicks in a row (3+) |
| Accompanying sounds | Silence or slight hissing (bleeding pressure in the system) | Humming, crackling, grinding, gurgling |
| Behavior after switching on | Starts on the first try, works stably | Does not turn on, or starts and immediately turns off |
| Smell | Absent | Burn, plastic, ozone |
| Temperature in the chambers | Lasts 6–12 hours (depending on the model) | Grows quickly (in 1–2 hours) |
If your the refrigerator falls into the “Potential malfunction” column, go to diagnostics section. If everything is within the normal range, read on why even working refrigerators can make clicking noises.
⚠️ Attention: In refrigerators with a system No Frost there may be clicking sounds louder due to the fan stopping. This is not a breakdown, but if the sound has become unnaturally loud, check whether frost or a foreign object has gotten into the blades.
3. TOP 5 reasons for clicks after turning off (and what to do about them)
Let's look at the most common ones. common causes in decreasing frequency. Let's start with those that can be eliminated independently and end with cases that require the intervention of a specialist.
🔌 Reason 1: Triggering of the start-up relay
The relay is the “brain” of the compressor When the power is turned off, it opens the contacts with a characteristic click. in modern refrigerators (Samsung RL-34, LG GA-B489), the relay is often combined with a posistor (thermistor), which can also make sounds when cooling.
What to do: If there is a single click and the refrigerator turns on normally, nothing. If the relay clicks repeatedly when trying. start, it needs to be replaced (cost of the part: 800–2500 ₽).
⚡ Reason 2: Power surge
During a sudden power outage (for example, during an accident at a substation), the compressor and relay may make clicks due to reverse current. This is especially true for houses with old wiring.
What to do: Connect the refrigerator via voltage stabilizer (for example, Resanta ASN-1000If clicks are accompanied by blinking lights in the house, call). electrician to check the network.
❄️ Reason 3: Freezing of the fan (in No Frost models)
If the fan is frozen, its blades may block when stopped, making a clicking sound. A common problem for refrigerators Atlant XM-4621 i Indesit DF 5200.
What to do: Defrost the refrigerator for 12-24 hours. check defrost heater (heating element) and defrost sensor.
🔥 Reason 4: Compressor overheating
If the refrigerator was operating in mode intensive freezing or in a hot room, the compressor could overheat. When you turn it off thermal relay it triggers with a loud click.
What to do: Give allow the refrigerator to “rest” for 1-2 hours before turning it on again. Make sure that the rear grill is not clogged with dust (clean it once every 6 months).
⚠️ Reason 5: Interturn short circuit in the compressor winding
The most dangerous reason. If the compressor winding is damaged, when the power is turned off, a loud click may occur. discharge of the capacitor with a loud click. Often accompanied by a burning smell.
What to do: Immediately disconnect the refrigerator from the power supply. The compressor must be replaced. (cost: 5000–15000 ₽ depending on the model).
Single click when turning off|Multiple clicks in a row
No burning smell|There is a burning smell or smoke
The refrigerator turns on on the first try|The refrigerator does not turn on or turns off after 1-2 seconds
The temperature in the chambers remains the same|The temperature rises quickly-->
4. Refrigerator models that click most often (and why)
Some brands and series of refrigerators are prone to clicking due to design features. Here are the most “noisy” models, according to reviews from users and craftsmen:
- 🏆 Samsung RL-34, RL-38, RB-30 — the start-up protection relay clicks Dongbu (Korean production). The sound is loud, but usually not dangerous.
- 🥈 Indesit DF 5200, DF 4180 - a problem with the fan No Frost, which is blocked by ice.
- 🥉 Atlant XM-4621, XM-6025 - a weak relay RTK-1, which clicks at the slightest power surge.
- ⚡ LG GA-B489, GA-B459 —a feature of inverter compressors (they click when switching modes).
- ❄️ Beko CNK 335220 —frequent thermostat clicks K59 when disconnected.
If your model is on this list, don’t panic. Manufacturers are aware of the features and consider them acceptable. For example, Samsung even indicated in the instructions for the series RLthat “relay clicks when turning on/off are the norm.”
⚠️ Attention: In refrigerators with inverter compressors (for example, LG Inverter Linear) clicks may be more frequent due to smooth power control. This is not a breakdown, but if the sound becomes louder than usual, check the voltage.
5. Step-by-step diagnostics: when to call a specialist
If you are not sure whether the click is dangerous, perform this test. It will take 10–15 minutes and will help you avoid expensive repairs.
- Step 1. Count the clicks.
A single click when turning off is normal. 3 or more clicks in a row is a sign of a faulty relay or compressor.
- Step 2. Check the smell.
Put your hand to the back wall of the refrigerator. The smell of burning or plastic is a signal of overheating of the winding.
- Step 3. Try turning on the refrigerator again.
If it:
- 🔹 Starts on the first try - everything is fine.
- 🔹 Clicks and immediately turns off - faulty relay or compressor.
- 🔹 Does not respond to switching on - problem with thermostat or control board.
If after shutdown the temperature has risen by more than 5°C in an hour, it is possible freon leak.
If you find problems in step 2 or 3 - do not turn on the refrigerator before inspection by a specialist. Further operation may lead to fire or complete failure of the compressor.
6. How to reduce clicks: prevention and adjustment
Even if the clicks are harmless, they can be made quieter. Here's what helps:
- 🔌 Use a surge protector. It smooths out voltage surges, reducing the load on the relay. A filter for household appliances is suitable (for example, Pilot S).
- 🧊 Defreeze the refrigerator. Ice on the fan and evaporator increases the clicking sound when stopped. Defrost the appliance every 6 months (even if you have No Frost).
- 🔧 Check the compressor fastening. Sometimes clicks occur due to loose bolts. Tighten them carefully (do not overdo it!).
- 🌡️ Adjust the thermostat. If the refrigerator is operating at maximum mode, the compressor and relay are under increased load. Set the temperature to
+4°Cfor. refrigerator compartment and-18°Cfor the freezer.
For refrigerators with inverter compressors (LG, Samsung), clicks can be reduced by turning on the Eco or Vacation (if your model has it). This will reduce the load on the system.
⚠️ Attention: Do not place the refrigerator close to the wall - this impairs the ventilation of the compressor and causes overheating. Optimal distance: 5–10 cm.
7. When clicks are a sign of a serious breakdown
There are 3 situations when clicks after turning off signal a critical malfunction:
- The refrigerator does not turn on after click.
Causes: the relay, compressor or control board has burned out. Part replacement is required.
- Clicks are accompanied by sparks or smoke.
Causes: short circuit in the winding of the compressor or relay. Danger to life! Immediately disconnect the equipment from the network.
- The refrigerator turns on, but does not freeze.
Causes: freon leak, compressor jamming or thermostat failure.
In these cases do not try to repair the refrigerator yourself. Contact the service center. Average repair cost:
- 🔧 Replacement of the start-up relay: 1500–3500 ₽.
- ⚙️ Replacement compressor: 6000–18000 ₽ (depending on the model).
- 💻 Repair of the control board: 2000–8000 ₽.
- ❄️ Elimination of freon leakage + refilling: 3000–10000 ₽.
If your refrigerator is more than 10 years old, consider buying a new one. 50–70% of the cost of new equipment.
What happens if you ignore the clicks?
If the problem is in the relay or compressor, ignoring the clicks can lead to:
- Fire (with a short circuit in the winding).
- Complete failure of the compressor (repair will cost 10-15 thousand rubles).
- Damage products (if the refrigerator does not freeze).
- Freon leakagethat is harmful to health (if inhaled in large quantities).
Frequently asked questions about refrigerator clicks
❓ The refrigerator clicks when turned off, but it works fine. dangerous?
No, if there is a single click and there are no other symptoms (smell, overheating, failures when turning on). This is normal operation of the start-up relay or compressor. Only clicks with a burning smell are dangerous. multiple clicks or clicking sounds with a burning smell.
❓ Why does the refrigerator click and not turn on?
The reasons can be different:
- 🔌 The start-up protection relay burned out (the most common reason).
- ⚙️ The compressor is jammed.
- 💻 The control board has failed.
- 🌡️ The thermostat is broken.
To accurately determine the problem, you need diagnostics with a multimeter. You can only check the relay yourself (ring the contacts).
❓ Refrigerator. clicks and immediately turns off. What to do?
This is a typical symptom of faulty relay or turn-to-turn short circuit compressoraction algorithm:
- Disconnect the refrigerator from the network.
- Wait 30 minutes (if the reason is overheating, it may start).
- Try to turn it on again. If the “click-buzz-click” cycle repeats, call a technician.
Do not turn on the refrigerator repeatedly in a row - this can burn the compressor.
❓ Why does the new refrigerator click louder than the old one?
Modern refrigerators (especially those with No Frost and inverter compressors) often click louder due to:
- 🔊 More sensitive relays (for example, Dongbu v Samsung).
- ⚡ Fast-acting thermostats (for example, Danfoss KP).
- ❄️ Active ventilation system (the fan clicks when it stops).
This is not a breakdown, but a design feature. If the refrigerator works stably, there is nothing to worry about.
❓ Is it possible to replace the relay yourself if it clicks?
Yes, if you have experience working with electrics. Procedure:
- Disconnect the refrigerator. from the network.
- Remove the back cover (usually it is secured with 4-6 bolts).
- Find the relay (black box on the compressor).
- Disconnect the contacts, remembering their location (better take a photo).
- Install a new relay (suitable for your compressor model).
⚠️ Attention: Do not touch the compressor tubes - they may be hot. If you are not confident in your abilities, trust the replacement to a specialist.