LG freezer does not freeze: reasons and what to do in 2026

Have you opened the freezer LGand found room temperature instead of the usual cold? The food began to thaw, and frost appeared on the walls or, conversely, everything was dry? This problem is familiar to many owners of refrigerators of the South Korean brand - especially models of series GA-B489, GB-B459 or InstaView with system No Frost. In 80% of cases, the malfunction can be fixed on your own, without resorting to expensive repairs.

In this article we will analyze why the freezer all possible reasonswhy freezer LG does not freeze - from banal icing of the fan to compressor failure. You will learn how to diagnose based on symptoms, what manipulations you can do yourself, and when exactly it’s time to call a professional. We also collected current data on warranty cases for refrigerators LG 2020–2026 model years and typical user errors that aggravate the problem.

1. First signs: how to understand that the freezer is not working

Before you panic, make sure that there really is a problem. Sometimes users confuse a temporary shutdown of the freezer (for example, during automatic defrosting) with a breakdown. Pay attention to these signals:

✅ The temperature in the freezer is above -12°C —check with a thermometer or by the state of the food (meat is defrosting, ice cream is melting).

✅ The compressor works without stopping —if the motor is humming constantly, but the cold is not is collected, this is a sign of a freon leak or a clogged capillary tube.

✅ The refrigerator compartment works, and the freezer - no - a typical situation in the event of a breakdown switching valve (in models with one compressor).

✅ Error on display - codes ER FF, ER DH or ER CH indicate problems with the fan, sensor or compressor, respectively.

If at least one of these signs is present, proceed to diagnosis. But first rule out the simplest reason - lack of power. Check whether the light inside the chamber is on, whether the machine in the panel has been knocked out, whether the door is tightly closed (sometimes the sensor does not work due to the skew of the seal).

2. TOP 5 reasons why the LG freezer does not freeze (and what to do)

We analyzed data from service centers and user reviews for 2023–2026. Here are the most common reasons why the freezer LG stops freezing, ranked by frequency of occurrence:

• 🔌 Problems with power or electronics — failures in the control unit, malfunction of the thermostat or temperature sensor.
• ❄️ Icing of the fan —typical a problem for models with No Frostwhen ice blocks air circulation.
• ⚙️ Failure of the compressor or leak freon - the compressor may run “idle” due to loss of refrigerant.
• 🔄 Failure of the switching valve —in two-chamber refrigerators with one compressor.
• 🚪 Wear of the seal or skewed door —leads to a constant flow of warm air.

Let's look at each reason in more detail, with instructions for elimination.

2.1. Fan icing (No Frost)

If your refrigerator LG is equipped with a system No Frost, the first reason for the freezer not working is icing of the fan in the rear part of the chamber. This happens due to:

• 💧 Moisture ingress when the door is opened frequently.
• 🔧 Clogged drainage hole (water does not drain, freezes on the blades).
• 🌡️ Malfunctions of the defrost heater (TDA).

How to check:

1. Unplug the refrigerator.
2. Remove all food from the freezer.
3. Remove the back panel in freezer (usually secured with latches or screws).
4. Shine a flashlight - if the fan blades are covered with ice, the problem has been found.

Solution:

Remove all products and shelves

Disable refrigerator from the mains for 12–24 hours

Clean the drainage hole with a cotton swab

Check the operation of the defrost heater (it should heat up when turned on)

Assemble the structure and turn on the refrigerator-->

If ice appears again after 1-2 week is probably faulty defrost sensor or timer. In this case, the part will need to be replaced.

2.2. Compressor failure or freon leak

If the compressor works, but does not freeze, two problems are possible:

1. Freon leak - the refrigerant has leaked through microcracks in the tubes. Symptom: the compressor is humming, but does not turn off, and the freezer is warm.
2. Interturn short circuit in the compressor —the motor runs, but does not create the required pressure. Symptom: the compressor housing gets very hot, the relay clicks are heard.

It is impossible to eliminate the freon leak on your own - it requires evacuating the system refrigerant charging. But you can check the compressor:

1. Turn off the refrigerator.
2. Remove the back cover (at the bottom where the compressor is located).
3. Test the compressor windings with a multimeter:
   • Resistance between terminals C-S (common and starting winding) - ~20–40 Ohm.
   • Resistance between C-R (common and working) - ~10–20 Ohm.
   • The resistance between S-R (starting and operating) is the sum of the two previous values.

If the readings are different or there is a break (infinite resistance), the compressor is faulty. In this case, it is cheaper to replace it with a new one than to repair it.

What to do if the compressor is hot?

If the compressor housing heats up to 70–90°C, but the freezer does not work, this may indicate:

1) Overload due to freon leakage (the compressor is trying to build up pressure, but to no avail).

2) Short circuit in the windings (the motor is wearing out).

3) Malfunction of the starting relay (clicks, but the compressor does not start).

In any case, a technician needs to diagnose it - independent repair is fraught fire!

3. Problems with electronics: sensors, boards, thermostats

Modern refrigerators LG are equipped with complex electronics, and a failure in one of the components can lead to failure of the freezer. Let's consider the main components:

If you do not understand electronics, do not try to repair the board yourself - this may lead to short circuit or failure of other components. It is better to contact a service center LG, especially if the refrigerator is under warranty.

4. Mechanical faults: seal, door, drainage

Sometimes the freezer stops freezing due to trivial mechanical problems that can be easily fixed with your own hands.

4.1. Wear of the door seal

The rubber seal loses elasticity over time, cracks or deforms. This leads to a constant flow of warm airand the compressor cannot cope with the load. How to check:

1. Close the door and shine a flashlight along the seal. If light is visible, there are gaps.
2. Insert a sheet of paper between the door and the body. If it pulls out easily, the seal is not airtight.

Solution:

• 🧼 Clean the seal with soapy water (sometimes it sticks due to grease).
• 🔥 Warm the deformed areas with a hairdryer (temperature ~50°C) and shape.
• 🛠️ If the seal is torn, replace it (cost ~2,000–4,000 ₽).

4.2. Door skewed

If the freezer door is sagging or skewed, it will not close tightly. Why adjust:

• 🏋️ Overloading shelves on doors (for example, heavy bottles).
• 🔩 Loosening loops.
• 🚪 Deformation of the body when moving.

How to adjust:

1. Turn off the refrigerator.
2. Remove the decorative plugs from the hinges (usually they snap into place).
3. Tighten the hinge screws with a screwdriver or hexagon.
4. Check the gaps - the door should open smoothly, without effort.

4.3. Clogged drainage hole

In models with No Frost condensation flows through the drainage hole in the back of the freezer. If it becomes clogged, the water freezes, forming an ice plug. This leads to:

• ❄️ Icing of the fan.
• 💦 Accumulation of water under the drawers.
• 🌡️ Increased temperature in the chamber.

How to clean:

1. Turn off the refrigerator.
2. Remove the back panel of the freezer.
3. Clean the hole with a cotton swab or wire.
4. Rinse the drainage with warm water (you can use citric acid to remove plaque).

5. User mistakes that kill the freezer

According to statistics from service centers, 30% of freezer breakdowns LG occur due to improper operation. Here are the most common mistakes:

• 🔥 Defrosting with hot water or a hair dryer —this leads to deformation of the plastic and damage to the seal.
• ❄️ Storing hot products —steam condenses on the walls, forming ice.
• 🧊 Freezer overload - disrupts air circulation, especially in models with No Frost.
• 🔌 Frequent power outages - this shortens the life of the compressor.
• 🧹 Ignoring cleaning -dust on the condenser worsens heat transfer.

To extend the life of the freezer, follow simple rules:

• Defreeze the refrigerator once every 6–12 months (even if you have No Frost).
• Do not place the refrigerator next to the stove or radiator.
• Check the seal once every 3 months.
• Do not slam the door - this breaks the seal.

6. When to call a technician: signs of serious breakdowns

Some malfunctions cannot be eliminated yourself. Contact the service center if:

• 💥 Compressor does not turn on at all (no sound, does not heat up).
• ⚡ Visible on the control board blackened tracks or swollen capacitors.
• 🧊 Freezer freezes too much (temperature below -24°C), but the refrigerator compartment is warm.
• 🔧 After replacing parts (for example, a thermostat), the problem returns after 1-2 days.
• 📜 The display shows an error ER FF, ER DH or ER IF (diagnostics required equipment).

Cost of repairs in service centers LG (for 2026):

If the refrigerator is under warranty (usually 1-3 years, depending on the model), repairs will be free. Check the conditions in product passport or on the website LG.

7. Prevention: how. avoid freezer breakdowns

To ensure that the freezer compartment LG operates without failures, follow these recommendations:

7.1. Correct installation of the refrigerator

Failure to comply with installation requirements is one of the main reasons for premature breakdowns. Please note. on:

• 📏 Gaps —at least 5 cm from walls and furniture for ventilation.
• ⚡ Socket —must be grounded, without extension cords.
• 🌡️ Room temperature —from +16°C to +16°C +32°C (at +10°C the compressor may not start).
• ⚖️ Smooth surface —check with a level to ensure there is no distortion.

7.2. Optimal temperature settings

In the freezer LG the temperature must be maintained. If set below -20°C, the compressor will work for wear. How to set up: -18°C. If you set it below -20°C, the compressor will work for wear. How to set up:

1. On models with a display: press Freezer and set. value -18°C.
2. On mechanical control: turn the knob to position 3–4 (out of 5 possible).

In refrigerators with the function Smart Cooling the temperature is adjusted automatically, but it can be adjusted through the menu Settings → Temperature Control.

7.3. Cleaning and care

Regular cleaning extends the life of the freezer:

• 🧽 Wash the camera once every 3 months with a weak soda solution (1 tablespoon per 1 liter of water).
• 🧹 Vacuum the rear grill (condenser) every six months.
• ❄️ If ice appears, defrost the refrigerator for 12-24 hours.
• 🔋 Check the seal for cracks and contamination.

What should not be used to clean the freezer?

Do not use:

- Abrasive detergents (damage plastic).

- Bleach and bleaches (corrode the seal).

- Hot water (deforms the shelves).

A soft sponge and dishwashing detergent are best.

8. Frequently asked questions about LG freezers

The LG freezer does not freeze, but the light inside is on. What is the problem?

If there is light, but the cold does not accumulate, the reasons may be the following:

1. Faulty thermostat or temperature sensor.
2. Broken compressor (does not start or runs idle).
3. Clogged capillary tube (freon does not circulate).
4. In models with No Frost - the fan is frozen.

First check if the ice is blocking the fan (defrost the chamber). If the problem remains, you need a technician to diagnose it.

The ER FF error appears on the display of the LG refrigerator. What to do?

Error ER FF means a malfunction freezer fan. Reasons:

• Icing of the blades (needs defrosting).
• Failure of the fan motor (replacement required).
• Failure of the control board (the fan does not receive food).

Disconnect the refrigerator for 12 hours to defrost. If the error remains, call a technician.

Is it possible to fill freon into an LG refrigerator yourself?

No, it is dangerous and technically difficult. Refilling freon requires:

• Special equipment (vacuum pump, pressure gauges).
• Knowledge of the type of refrigerant (in LG used R-600a or R-134a).
• Ability to solder with copper-phosphorus solder (to eliminate leaks).

Independent refilling can lead to compressor overheating or explosion (freon is flammable!). service.

How much does it cost to repair an LG freezer under warranty?

If the refrigerator is under warranty (usually 1-3 years), repair freeincluding spare parts. Exceptions:

• Failure due to improper operation (for example, mechanical damage).
• Independent repairs that led to aggravation problems.
• Expiration of the warranty period (check the date in the product passport).

To have a technician come out, call the official service LG on the phone number specified in the warranty card.

How to reset an error on an LG refrigerator after repair?

To reset the error (for example, ER DH or ER IF), follow these steps:

1. Unplug the refrigerator for 1-2 minutes.
2. Plug it back in and wait 10 minutes (the system will self-diagnosis).
3. If the error remains, press and hold the button Ice Plus (or Freezer) for 5-10 seconds.

If the reset does not help, you need to flash the control board.

If your problem does not solved, describe the symptoms in the comments - we will help with diagnostics!