The refrigerator clicks during operation: when is this the norm, and when is it a signal of breakdown

Have you noticed that your refrigerator periodically makes clicking noises during operation? This sound can be disturbing - especially if it hasn't happened before. In most cases, clicks are a normal phenomenonrelated to the operation of the compressor and thermostat. However, in some situations they can signal malfunctions that require attention.

In this article we will analyze in detail all the possible causes of clicks - from harmless design features to serious breakdowns. You will learn how to distinguish working sounds from alarm signalswhen it is worth contacting a specialist, and when you can get by with self-diagnosis. We will also give practical recommendations for reducing noise levels and extending the service life of equipment.

If your refrigerator clicks with enviable regularity, but at the same time it freezes normally and does not overheat, most likely, there is no reason to panic. But let's look at it in order.

1. Normal clicks: how a refrigerator works

Modern refrigerators are equipped with several mechanical and electrical components that produce characteristic sounds during operation. Clicks are one of the most common acoustic effects, and in 80% of cases they are not associated with breakdowns.

The main sources of “healthy” clicks:

• 🔄 Compressor start relay —when you turn the motor on/off, a distinct click is heard. This is normal, since the relay contacts physically close and open.
• ❄️ Thermostat - when the set temperature is reached, a click is heard to turn off the compressor (similar to the operation of an iron or kettle).
• 🧊 No Frost system - in models with automatic defrosting, the fan and heater periodically turn on, which is accompanied by clicks of the relay.
• 🔌 Start-protective relay - protects the compressor from overloads, making clicks when activated.

The frequency of clicks depends from operating mode refrigerator. For example, in hot weather or when first turned on after defrosting, the compressor will turn on more often - accordingly, there will be more clicks. This is not a cause for concern if:

• 📏 The interval between clicks is at least 10-15 minutes (standard compressor operating cycle time).
• 🌡️ The temperature in the chambers is maintained at the specified level.
• ⚡ There are no flashing error indicators on the control panel.

2. When clicks are a sign of malfunction

If the refrigerator starts to click more often than usual, accompanied by other strange sounds (humming, crackling, vibration) or has stopped cooling normally, this is a reason to check it for malfunctions. Let's look at the most common breakdowns in which clicks appear.

Typical "emergency" clicks:

• 🔧 Faulty start-up relay —the clicks become frequent and rhythmic (every 1-3 seconds), but the compressor does not start. This means that the relay is “jammed” and cannot keep the contacts in the closed state.
• ⚡ Problems with the compressor —if after a click you hear a hum, but the motor does not start, the piston may have turn-to-turn breakdown of the windings or jammed.
• 🔥 Overheating of the compressor - clicks are accompanied by strong heating of the back wall the refrigerator and the activation of thermal protection.
• 🧲 Thermostat malfunction —if the clicks are chaotic, and the temperature in the chambers is unstable (either too low or too high), the temperature sensor is to blame.

Situations are especially dangerous when clicks are accompanied by:

• 🚨 Blinking indicators on the control panel (error codes like E1, F2 etc.).
• 🔥 Smell of burning - this may indicate a short circuit in the compressor windings.
• ❄️ Lack of cold in the chambers with the motor running.

3. How to diagnose the problem yourself

Before calling a specialist, you can do primary diagnosis at home. This will help save time and money if the problem turns out to be not serious.

Step-by-step test plan:

1. Listen to the clicking pattern:
   • 🔊 Rhythmic clicks every 1-3 seconds → problem with the start-up relay or compressor.
   • 🔊 Single clicks with an interval of 10-30 minutes → normal thermostat operation.
   • 🔊 Clicks + hum, but the motor does not start → compressor or relay malfunction.
2. Check the temperature in the chambers:
   • 🌡️ If the refrigerator no coolsbut clicks, the problem is in the thermostat or compressor.
   • 🌡️ If freezes products - the temperature sensor or control board is faulty.
3. Inspect the back wall:
   • 🔥 Strong heating in the compressor area → overload or interturn short circuit.
   • 💧 Puddles of water under the refrigerator → problem with the defrosting system (for models No Frost).

For more accurate diagnostics, you can use with a tester (multimeter). For example, to check the start-up relay:

1. Disconnect the refrigerator from the network.
2. Remove the relay cover (usually located next to the compressor).
3. Ring the relay contacts in the resistance test mode.
4. If the resistance tends to infinity, the relay is faulty.

Are the clicks rhythmic or chaotic?|Temperature in the refrigerator and freezer compartments|Heating of the back wall and compressor|Error codes on the display (if any)|Socket status and power cord -->

If you are not confident in your abilities, it is better not to take risks and call a specialist. Independent repair of the compressor or electrical circuits without experience can lead to a short circuit or leak of freon.

4. clicks

Let us examine in more detail the most common malfunctions in which the refrigerator begins to click abnormally often or loudly.

Please note: repair prices can vary greatly depending on refrigerator brand (for example, spare parts for Liebherr or Samsung more expensive than for Atlant or Biryusa), region and complexity of work.

What to do if the clicks are accompanied by a burning smell?

Immediately unplug the refrigerator! A burning smell may indicate a short circuit in the compressor windings or overheating of the start-up relay. In this case, further operation of the device is dangerous - there is a risk of fire or electric shock. Do not attempt to repair it yourself if you do not have experience working with electrical equipment.

5. How to reduce the noise of a refrigerator

If clicks are not associated with breakdowns, but are still annoying, you can try reduce the noise level in the following ways:

Practical tips:

• 🏠 Install the refrigerator on a flat surface — Vibration from uneven floors can increase the clicking noise. Use a building level to check.
• 🔌 Check the socket —if it is loose, the contacts may spark, adding extraneous sounds. It is better to connect the refrigerator directly, without extension cords.
• 🧲 Adjust the legs —if the refrigerator is not level, the compressor may vibrate more strongly, increasing the clicks of the relay.
• 🔇 Install a noise-insulating substrate —special pads under the legs will absorb part of the vibrations.
• 🌡️ Do not place the refrigerator close to the wall —leave a gap of 5-10 cm for better ventilation (overheating increases noise).

For models with No Frost system additional recommendations:

• ❄️ Defrost the refrigerator regularly (even if it has auto defrost) - ice on the fan can cause extraneous sounds.
• 🧊 Check the rubber seals - if they worn out, the compressor runs longer, which increases the number of clicks.

6. When to call a specialist: criteria

Not all problems can be solved on your own. Contact a specialistif:

Alarm signals:

• ⚡ Refrigerator clicks every 1-3 seconds, but the compressor does not start for more than 10 minutes.
• 🌡️ Temperature in the chambers rises above +8°C (in the refrigerator compartment) or -12°C (in freezer).
• 🔥 Rear wall heats up to 60°C and above (normally up to 45°C).
• 🚨 The display lights error code (for example, E1, F5, ALARM).
• 💦 Under the refrigerator appeared puddle of water, although the drainage system is clean.

When choosing a technician, pay attention to:

• 🛠️ Experience in working with your brand (for example, LG, Indesit, Bosch have different design features).
• 📋 Availability of certificates refrigerator repair equipment.
• 🔧 Warranty for work and spare parts (minimum 6 months).
• 💬 Reviews clients (especially pay attention to cases with similar breakdowns).

The cost of diagnostics is usually included in the price of the repair, but check this point in advance. On average, a technician’s visit to your home costs $2. data-i="230">(free if you agree to repair). 1,000–2,000 rubles (free if you agree to repair).

7. Prevention: how to prevent breakdowns

To ensure that the refrigerator operates quietly and without failures, follow simple operating rules:

Prevention checklist:

• 🔌 Stable voltage —use stabilizer voltage or surge filterif your network has frequent surges.
• 🧹 Regular cleaning —every 6 months, clean the capacitor (grid on the back wall) from dust and dirt.
• ❄️ Proper defrosting -even for No Frost once a year turn off the refrigerator for 12 hours to completely defrost.
• 🌡️ Optimal loading —do not overload the chambers (especially the freezer), leave gaps for air circulation.
• 🚪 Careful handling of doors —do not slam them, check the seals for wear.

For models with electronic control (for example, Samsung RB30J3000WW or LG GA-B489YDQZ) additionally:

• 📱 Update the firmware (if there is such a function) - manufacturers release patches to optimize operation.
• 🔋 Monitor the condition of the batteries in the display (if there is one) - discharged elements can cause malfunctions.

Compliance with these rules will extend the life of the refrigerator by 30-50% and reduce the risk of breakdowns accompanied by clicks.

8. Frequently asked questions about clicks in the refrigerator

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

Modern models are equipped with more sensitive relays and electronic control boards, which can produce more distinct clicks. In addition, in refrigerators with inverter compressors (for example, Samsung or LG) the motor operates almost continuously, but with variable power, which is accompanied by frequent clicks of the relay. This is normal and does not indicate a breakdown.

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

Theoretically, yes, if you have experience working with electronics. The relay is inexpensive (from 500 rubles), and replacing it does not require special tools. However the risk of error is high — if you connect the contacts incorrectly, you can burn the compressor. If you are not sure, it is better to call a specialist.

❓ The refrigerator clicks and does not turn on - what to do?

Check first:

1. Is there voltage in the socket (connect another device).
2. Has the circuit breaker in the electrical panel tripped.
3. The integrity of the power cord and plug.

If everything is in order, but the refrigerator does not start, most likely the problem is start-protection relay or compressor. Diagnostics needed.

❓ Why does the refrigerator click louder at night than during the day?

At night, the house is usually quieter, so any sounds seem louder. In addition, if you often open the door during the day, the compressor works more actively, and at night - less often, but with sharper clicks (which is accompanied by clicks). Also, at night, the voltage in the network may drop, which affects the operation of the relay.

❓ Are clicks dangerous for the refrigerator?

The clicks themselves do not harm the refrigerator - it is just the sound of the mechanisms. The danger is caused by reasonsFor example, if the clicks are caused by a faulty relay, then ignoring the problem can lead to failure of the compressor.

If your refrigerator clicks, but freezes normally and shows no errors, there is most likely no reason to worry. However, if the clicks are accompanied by other symptoms (heating, lack of cold, errors on the display), it is better not to delay diagnostics. Timely repair will be cheaper than replacing a burnt-out compressor or control board.