The refrigerator does not freeze: 12 reasons and step-by-step diagnostics

Have you opened the refrigerator, but the food is warm, there is no frost on the back wall, and the motor is either silent or hums without stopping? The situation when the refrigerator does not freeze, but the light inside is onis one of the most common malfunctions. The reasons can be either trivial (a door not tightly closed) or serious (freon leakage or compressor failure).

In this article we will analyze all possible reasonswhy the refrigerator stopped freezing, as well as let's step-by-step instructions for self-diagnosis. You will learn when a problem can be fixed on your own, and when you need to call a professional. We will pay special attention to models with the No Frost system two-compressor refrigerators - they have their own “weak points.”

If your refrigerator Samsung, LG, Indesit, Atlant or another brand has stopped freezing, do not rush to call service. In 30% of cases, the malfunction is fixed in 10 minutes without tools. But it is important to correctly determine the source of the problem - this determines whether repairs or replacement of parts will be required.

1. Why the refrigerator does not freeze: the main reasons

When the refrigerator stopped freezing, but at the same time the light inside is on, this signals problems in one of the key systems: the compressor, thermostat, evaporator or refrigerant circulation. Let's consider all possible scenarios:

• 🔌 Lack of power to the compressor —the motor does not start due to a faulty start-up relay, broken winding or problems with electrical wiring.
• ❄️ Freon leak —the refrigerant has leaked through microcracks in the tubes, and the system cannot cool.
• 🌡️ Failure of the thermostat or temperature sensor —the control unit does not receive a signal about the need for cooling.
• 🚪 Tightness violation —seal the doors are worn out, and warm air penetrates inside.
• ⚙️ Clogged capillary tube —freon does not circulate, and the refrigerator does not freeze, although the compressor is working.
• ❄️🔥 No Frost system failure —the fan is frozen or burned out, and the cold is not distributed throughout the chamber.

In two-compressor refrigerators (for example, Liebherr CNef 4815 or Bosch KGE39XW2AR) the problem can affect only one chamber - the freezer or refrigerator compartment. In this case the culprit is often a separate compressor or switching valve.

The first thing to do check whether the compressor is working. Place your hand on the back wall of the refrigerator:

• 🔊 If the motor hums, but does not turn off - there may be a freon leak or a blockage in the system.
• 🔇 If compressor silent —an electrical problem (relay, thermostat, motor winding).
• 🔄 If the motor turns on immediately turns off —the start-protection relay is faulty.

2. The refrigerator does not freeze, but the light is on: diagnosis by symptoms

To more accurately determine the cause, analyze the “behavior” of the refrigerator using the table below:

If your refrigerator Atlant or Indesit with mechanical control, most often the thermostat is to blame. In models with an electronic unit (Samsung RL-60, LG GA-B489), the problem may lie in the sensors or control board.

How to check the thermostat?

1. Disconnect the refrigerator from network.
2. Remove the protective casing from the thermostat (usually located next to the temperature control knob).
3. Close the two wires going to the thermostat together (take a photo of the connection diagram first!).
4. Turn on the refrigerator. If the compressor works, the thermostat is faulty.

What will happen if you do not replace the faulty thermostat?

If you leave a broken thermostat, the compressor will work without stopping, which will lead to its overheating and failure. In the best case, your electricity bill will increase 2-3 times. In the worst case, you will need to replace the motor (from 8,000 ₽).

3. A refrigerator with No Frost does not freeze: repair features

Systems No Frost (or Frost Free) are vulnerable to freezing of the fan and evaporator. If your refrigerator (Samsung RB-30 J3200, LG GA-B429) has stopped freezing, but the light is on, the first thing to do is defrost it for 24 hours..

Signs of a No Frost malfunction:

• ❄️ There is ice in the freezer, and ice in the refrigerator the chamber is warm.
• 🔊 The fan does not make noise (normally it works with pauses).
• 🌡️ The temperature in the chambers rises, although the compressor is running.

Step-by-step diagnostics:

1. Unplug the refrigerator.
2. Take out all the food and shelves.
3. If there is a thick layer of ice on the back wall of the freezer, defrost the refrigerator at least 12 hours (in severe cases - up to a day).
4. After defrosting, turn on the refrigerator. If after 2-3 hours it began to freeze, the problem was freezing.
5. If it does not freeze, check the fan (it is located behind the back panel of the freezer).

In models No Frost often fails defrost timer or evaporator heater. These parts are responsible for automatic defrosting. If they break, ice builds up on the evaporator, blocks the fan, and the cold stops flowing into the chambers.

Disconnect the refrigerator from the mains|Defreeze for at least 12 hours|Check the operation of the fan after defrosting|Inspect evaporator to ice|Ring the defrost heater (if you have a multimeter)-->

4. Freon leak: how to determine and what to do

Freon is a refrigerant that circulates through the system and provides cooling. If it leaks, the refrigerator stops freezing, although the compressor works without stopping. Signs of a leak:

• 🔊 The compressor hums constantly, but there is no cold.
• 🧊 Condenser (grid on back wall) cold (normally it should heat up).
• 🛠️ Oil stains are visible on the tubes or in the soldering areas (freon comes out along with the oil).

Where does a leak most often occur?

• 🔧 In the places where the tubes are soldered (especially after transportation refrigerator).
• 🧊 In the evaporator (if it was damaged when defrosting with a knife).
• 🔄 In the compressor (rarely, but it happens when worn out).

Fix the leak yourself impossible —special equipment is required for soldering and refilling freon. Repair cost:

• Leak diagnostics - from 1,500 ₽.
• Soldering and refilling freon - from 3,500 to 6,000 ₽ (depending on the model).
• Replacement of the evaporator (if there is a leak in it) - from 8,000 ₽.

5. The refrigerator does not freeze because of the compressor: how to check

The compressor is the “heart” of the refrigerator. If it does not work, there will be no cooling. Causes of compressor malfunction:

• 🔌 Failure of the start-up relay.
• 🔥 Motor winding burnout (often due to power surges).
• 🛠️ Mechanical wear (in old refrigerators).

How to check the compressor?

1. Disconnect the refrigerator from the mains.
2. Remove the protective cover from the compressor (it is located on the back wall at the bottom).
3. Test the windings with a multimeter:
   • The resistance between the terminals should be 20–40 Ohm (exact values depend on the model).
   • If the device shows 0 (short circuit) or ∞ (break) - the compressor is faulty.

Check the start-up relay - it often “sticks” and prevents the engine from starting.

If the compressor hums, but does not start, try lightly tapping it with the wooden handle of a screwdriver. Sometimes this helps to “move” a jammed rotor. If the motor still does not start, a replacement will be required.

Cost of compressor repair:

• Replacement of the start-protection relay - from 1,500 ₽.
• Winding repair (rewinding) - from 4,000 ₽ (not always advisable).
• Replacement of the compressor - from 7,000 to 12,000 ₽ (including work and refilling freon).

6. The refrigerator door does not close tightly: what to do

If the door seal is worn out or deformed warm air penetrates insideand the refrigerator cannot maintain the desired temperature. Symptoms of the problem:

• 🚪 The door closes with a click, but then opens slightly.
• ❄️ Ice forms on the back wall (due to condensation).
• 🌡️ The temperature in the chamber is higher than the set one, although the compressor is running.

How to check the tightness?

1. Take a sheet of paper (for example, a banknote).
2. Close the door, holding the sheet between the seal and the body.
3. If the sheet is easily pulled out, the seal is not sealed.

How to fix the problem?

• 🔧 Adjust the hinges —if the door is sagging, tighten the screws or adjust the height.
• 🧼 Clean the seal —sometimes it sticks due to grease or dirt. Wash it with soapy water.
• 🔥 Restore its shape —if the rubber is deformed, immerse it in hot water (60–70°C) for 10 minutes, then give it the correct shape.
• 🛠️ Replace the seal — if it is cracked or has lost elasticity (the cost of a new rubber band is from 1,000 to 3,000 rubles).

In refrigerators Side-by-Side (for example, Samsung RS62R5001M9) the freezer door often sag due to heavy shelves. In this case, it will help adjusting the hinges or replacing the springs.

7. When to call a technician: prices for repairs in 2026

If you have carried out diagnostics, but the refrigerator still does not freeze, It's time to call a specialist. Below are the estimated prices for repairs in service centers (relevant for Moscow and the regions):

Prices may vary depending on:

• 📍 Region (Moscow and St. Petersburg are more expensive than in small cities).
• 🏷️ Refrigerator brands (spare parts for Liebherr or Miele more expensive than for Atlant).
• 🛠️ Difficulties of repair (for example, replacing an evaporator is No Frost more expensive than replacing a thermostat).

How to choose a service center?

• 🔍 Check reviews on Yandex.Maps or 2GIS.
• 📋 Check if the work is guaranteed (standard - 6–12 months).
• 💰 Compare prices in 2-3 workshops.
• 🚗 Find out if there is a home visit (on average +1,000 ₽ to the cost of repairs).

8. Prevention: how to avoid refrigerator breakdowns

To ensure that the refrigerator lasts longer and does not break down, follow simple rules:

• 🧊 Defrosting - even in models No Frost turn off the refrigerator for 12-24 hours once a year prevention.
• 🔌 Stable voltage —use a surge protector or stabilizer (voltage surges kill the compressor).
• 🧼 Cleaning the seal —wipe the rubber band with soap and water once a month.
• 🚪 Correct opening —do not slam the door, do not hang heavy objects on it.
• 🌡️ Temperature conditions —do not place the refrigerator next to the stove or radiator.

What not to do do:

• ❌ Defrost ice with a knife or fork (you can damage the evaporator!).
• ❌ Put hot foods in the refrigerator (this increases the load on the compressor).
• ❌ Overload the freezer (air circulation must be free).

In refrigerators with No Frost it is especially important do not block the ventilation holes products. If the air does not circulate, the system freezes and the refrigerator stops freezing.

FAQ: Frequently asked questions about refrigerators that do not freeze

❓ The refrigerator hums, but does not freeze - what does this mean?

If the compressor works without stopping, but most likely there is no cold leakage). freon or clogged capillary tubeAlso check if the fan is frozen (in models No Frostyou won’t be able to fix the problem yourself - you need a technician with refilling equipment.

❓ Is it possible to repair the refrigerator yourself?

Yes, but only in simple cases:

• Replacing the door seal.
• Cleaning the drain holes.
• Adjusting the hinges.
• Replacing the light bulb.

If the problem is compressor, freon, thermostat or electronics it is better to call a technician. Incorrect repairs can aggravate the breakdown.

❓ How much does freon refilling cost?

The cost depends on the type of refrigerant and system volume:

• Freon refilling R-134a — from 3,500 ₽.
• Freon refilling R-600a (used in modern models) - from 4,000 ₽.
• Leakage repair + refilling - from 5,000 ₽.

Prices are relevant for 2026, but may vary depending on the region and model of the refrigerator.

❓ Why does the refrigerator not freeze, but the freezer works?

In two-chamber refrigerators (Atlant MXM 2808, Indesit DF 4180) this is a sign:

• Faults switching valve (in models with one compressor).
• Freon leaks in the circuit of the fridge compartment.
• Failures fan (in No Frost).

If the freezer is freezing, but there is no refrigerator compartment, the problem is in refrigerant distribution.

❓ How long can food be stored if the refrigerator does not freeze?

Shelf life at room temperature (+20–25°C):

• 🥛 Milk, sour cream, yogurt - up to 2 hours.
• 🥩 Raw meat/fish - up to 1 hour.
• 🍳 Prepared dishes (soups, side dishes) - up to 4 hours.
• 🧀 Hard cheese - up to 6 hours.
• 🥚 Eggs - up to 1 week (if not washed).

If the refrigerator is slightly frosty (temperature about +10°C), the time period increases by 1.5–2 times.

⚠️ Attention! If the refrigerator does not freeze due to a freon leak, do not turn it on for a long time in this condition. will work for wear, which will lead to its overheating and breakdown. It is better to disconnect the refrigerator from the network and wait for the technician.

⚠️ Attention! In refrigerators with the system No Frost it is strictly forbidden to chip off the ice with a knife or other sharp objects. This can damage the evaporator and lead to leakage! freon. Use only a plastic spatula or wait until it is completely defrosted.