The refrigerator does not start - we analyze the 10 main reasons and solutions

Have you opened the refrigerator door, and there is warmth and silence inside? Or did the unit suddenly stop humming, although it previously worked like a clock? A situation when the refrigerator does not start always causes panic: food spoils, and calling a technician is expensive. But don’t rush to get upset - in 30% of cases the problem can be fixed on your own in 10-15 minutes.

In this article we will analyze all the possible reasons why the refrigerator refuses to turn on: from a banal lack of power to serious compressor breakdowns. You will learn how to check the socket, thermostat and start relay without special tools, and also when exactly it’s time to call a specialist. We will pay special attention to models with electronic control —their diagnostics differ from classic refrigerators with a mechanical thermostat.

Important: if your refrigerator Indesit, Samsung or LG with the display showing an error code (for example, E1, F2), immediately go to the section about electronic faults - there is a decoding of popular codes for different brands.

1. Checking the power: why the refrigerator may not turn on due to the socket

The first thing to do is to make sure that the problem is not in the power supply. This is the simplest and most common reason, but many people overlook it. Start with a visual inspection:

• 🔌 Check to see if the indicator on the refrigerator panel is on (if there is one). The absence of light is a sure sign of a lack of power.
• 🔍 Inspect the cord for damage: frayed insulation, traces of melting or breaks at the plug.
• 🔌 Plug another device into the outlet (for example, a phone charger) - if it does not work, the problem is in the outlet or machine.

If the socket is working, but the refrigerator still does not respond, try reboot it through a complete shutdown: remove the plug from the socket for 5-10 minutes, then turn it on again. This will reset possible freezes of the electronic module (relevant for models Bosch, Siemens, Liebherr with a display).

⚠️ Attention: if after shutting down the refrigerator turned on, but after a few hours it turned off again, this may indicate data-i="64">or compressor overheating. Do not ignore repeated failures! faulty start relay or compressor overheating. Don't ignore repeated crashes!

For refrigerators with No Frost check to see if the overload circuit breaker (usually located on the compressor or at the bottom of the rear wall) has tripped. It looks like a small red button - press it if it is extended.

2. Thermostat and thermostat: why the refrigerator does not start after defrosting

If there is power, but the refrigerator does not cool or make sounds, the culprit may be thermostat (in mechanical models) or temperature sensor (in electronic ones). These elements are responsible for turning on the compressor when the temperature inside the chamber rises.

How to check the thermostat:

1. Disconnect the refrigerator from the mains.
2. Remove the thermostat protective cover (usually located inside the refrigerator compartment, under the plastic panel).
3. Find two wires going to the thermostat and short them together (for example, with a screwdriver with an insulated handle).
4. Plug in the refrigerator. If the compressor works, the thermostat is faulty and requires replacement.

For electronic models (Samsung RL-60, LG GA-B489) the process is more complicated: you need to check the resistance of the sensor with a multimeter. Normal values ​​are usually indicated in the technical data sheet (for example, 5-7 kOhm at +20°C). If the resistance is 0 or infinity, the sensor has burned out.

⚠️ Attention: in refrigerators with a system No Frost two sensors are often installed - for the refrigerator and freezer compartments. If only one is faulty, the second chamber may continue to work, but the compressor will turn on less often.

If the thermostat is working, but the refrigerator still does not start, check temperature settings. The control may have been accidentally turned to the "Off" position. or "Min". In electronic models, settings may fail after a power surge - try resetting them to factory settings (Settings → Reset).

3. relay: why the refrigerator hums, but does not start

If, when turned on, the refrigerator makes a hum, but does not start to cool, the problem is most likely in start relay. This element is responsible for starting the compressor and protecting against overloads. If the relay malfunctions, the compressor either does not turn on at all, or tries to start, but immediately turns off.

Signs of a faulty relay:

• 🔊 The refrigerator hums for 5-10 seconds, then clicks and turns off.
• 🔥 The relay body is hot to the touch (indicates a short short circuit).
• 🔄 The compressor turns on only after repeated attempts (sometimes tapping on the relay helps).

How to check the relay:

1. Turn off the refrigerator and remove the protective casing from the compressor.
2. The relay is usually located next to the compressor and is a small plastic box with wires.
3. Remove the relay and shake it - if knocking or rattling is heard inside, this is a sign of mechanical wear.
4. Test the contacts with a multimeter: the resistance between the terminals should be 20-40 Ohms (for exact values, see documentation).

If the relay is faulty, it needs to be replaced. For most models (Atlant, Beko, Stinol), universal relays like DANFOSS 103N0022 or RBM-1are suitable. Cost - from 500 to 1500 rubles.

What will happen if you do not change the faulty relay?

Prolonged work with a faulty relay leads to overheating of the compressor and its failure. In the worst case, the motor winding may burn out, and then the repair will cost 70-80% of the cost of a new refrigerator.

4. Compressor: when the refrigerator does not start due to a breakdown. motor

If all previous checks did not produce results, the problem may be in compressor the “heart” of the refrigerator. Its breakdown is the most serious and expensive malfunction. Let's consider the signs by which you can determine a compressor malfunction:

To diagnose the compressor you will need a multimeter. Turn off the refrigerator, remove the housing from the compressor and disconnect the wires. Ring the terminals:

• Resistance between C (common) and S (start winding) — 20-30 Ohms.
• Resistance between C and R (working winding) — 15-20 Ohms.
• Resistance between S and R —the sum of the two previous values (35-50 Ohms).

If the values are different or equal to 0/infinity, the compressor is faulty. In 90% of cases, replacing the compressor is not economically feasible for refrigerators older than 7-10 years - it’s cheaper to buy a new unit.

5. Electronic control module: why modern refrigerators “glitch”

Refrigerators with electronic control (Samsung RB-30, LG GC-B247, Bosch KGE39) often refuse to turn on due to failures in control board. This is the “brain” of the unit, which controls all processes. Signs of a module malfunction:

• 📛 An error appears on the display (for example, E1, F5, ER DH).
• 🔄 The refrigerator turns on and off spontaneously.
• 🔌 The display does not respond to pressing buttons.
• 🔊 Fans and compressor work chaotically.

Deciphering popular error codes:

What to do if the electronic module fails:

1. Disconnect the refrigerator from the network for 15-20 minutes (full reset).
2. Check all connectors on the board - they must be tightly connected.
3. Inspect the board for swollen capacitors or burnt tracks.
4. If the error remains, contact the service center. Repairing the board costs 3000-8000 rubles.

⚠️ Attention: do not try to solder the board yourself without experience. Incorrect repair can lead to a short circuit and complete failure of the refrigerator! building.

6. Additional reasons: from freon leakage to blockages in the system

If all the main components are working, but the refrigerator still does not start or is not working correctly, check:

• ❄️ Freon leak: signs - the compressor is working, but does not cool, oil stains are visible on the back wall. This can only be eliminated by service. (cost - from 2500 rubles).
• 🔧 Clogged capillary tube: the refrigerator does not freeze well, the compressor overheats. The tube needs to be cleaned or replaced.
• 🔌 Fan malfunction (for models c No Frost): if the fan does not spin, the cold is not distributed throughout the chamber. Check whether it is blocked by ice or foreign objects.
• 🔋 Voltage problems: refrigerators are sensitive to power surges If there are frequent fluctuations in your network, install a stabilizer (recommended power - from 1). kW).

To diagnose freon leaks or blockages, you will need special equipment (pressure gauge manifold, leak detector). It is difficult to fix these problems yourself - it is better to contact a specialist.

7. When to call a technician: 5 signs of a serious breakdown

Contact a specialist if:

• 🔧 The refrigerator does not turn on, and all previous checks (socket, thermostat, relay) did not reveal any problems.
• ❄️ Oil stains or a trace of a freon leak appeared on the back wall.
• 🔥 The compressor gets very hot (the body temperature is higher 70°C).
• 📛 The display shows an error that cannot be reset (ER FF, F7 etc.).
• 🔊 The refrigerator makes uncharacteristic sounds: grinding, knocking or vibration.

The cost of repair depends on the type of breakdown:

If the refrigerator is older than 10 years, before repairing, evaluate the feasibility. For example, replacing a compressor in Atlant MXM-1808 2012 will cost 8,000-10,000 rubles, while a new unit of similar power costs 18,000-22,000 rubles.

FAQ: Frequently asked questions about a non-working refrigerator

The refrigerator does not turn on after defrosting - what to do?

First check if the overload protection has tripped (red button on the compressor). data-i="213">, make sure that the fan is not blocked by ice. Also check the thermostat - after defrosting it could have failed due to condensation. No Frost, make sure the fan is not blocked by ice. Also check the thermostat - after defrosting it could fail due to condensation.

The refrigerator hums, but does not freeze - what is the reason?

This is a sign of a malfunction of the start relay or compressor. If the hum lasts 5-10 seconds and then sounds. click - the relay is to blame. If the compressor operates continuously, but does not cool, there may be a freon leak or a clogged capillary tube.

Is it possible to replace the compressor yourself?

Technically, yes, but this is a complex procedure that requires evacuation of the system and refilling with freon. Without experience, there is a high risk of damaging the pipes or connecting the compressor incorrectly, which will result. to its rapid failure. It is better to entrust this to a specialist.

The refrigerator turns on for 1 second and turns off - what is this?

A typical sign of a malfunction start relay or interturn short circuit in the compressorThe relay can be replaced independently (cost - 500-1500 rubles), but the compressor will require professional diagnostics.

How much does it cost to diagnose a refrigerator at home?

In most service centers diagnostics cost 500-1500 rubles. If you agree to repair, this amount is usually deducted from the total cost. In some workshops, diagnostics are free when ordering repairs.