LG refrigerator between chambers gets warm: normal or breakdown?

Owners of refrigerators LG with the system No Frost often notice that the partition between the freezer and refrigerator compartments gets very hot. This causes concern: either the equipment is not working correctly, or it’s time to call a specialist. In fact heating between the chambers this is a normal phenomenon for most modern models, but only if the temperature does not exceed critical values.

In this article we will look at why the partition in refrigerators heats up LGwhen this is considered the norm, and when it is a sign malfunctions. You will learn how to independently diagnose the problem, which components to check first, and when professional repairs are really required.

Let us note right away: if the partition is just warm (up to 40-45°C), but the refrigerator freezes and cools food normally, there is no need to worry. But if the temperature exceeds 50°C, condensation appears or the appliance works without stopping, then it’s time to deal with the reasons.

Why the partition between the chambers heats up: the physics of the refrigerator

In refrigerators LG with a system No Frost heat exchange occurs differently than in older models. The main reason for the heating of the partition is condenser and evaporator, which can be located both behind and inside the case. When the compressor is running, freon circulates through the system, releasing heat to the environment. Part of this heat is transferred to metal elements, including the partition between the chambers.

In addition, in models with Inverter Linear compressor (for example, LG GA-B489YDQZ or LG GB-B579SLQZ) Heating may be more noticeable due to the way the inverter system operates. Such a compressor regulates power smoothly, without sudden jumps, but at the same time remains in an active state longer, which leads to an increase in the temperature of the case.

• 🔥 Normal heating: the partition is warm, but does not burn (up to 45°C), the refrigerator turns off periodically.
• ⚠️ Precritical heating: the temperature is higher 50°C, the compressor runs almost non-stop.
• ❄️ Cold partition: if it is icy, this may indicate a freon leak or malfunction thermostat.

It is important to understand that in refrigerators with two-compressor system (for example, LG GC-B247SLQV) the heating may be distributed unevenly. One compressor is responsible for the freezer, the other for the refrigerator, and their work is not always synchronized.

7 main reasons for strong heating between the chambers

If the partition gets hotter than usual, this may be due to several factors. Let's look at the most common causes and their symptoms.

1. Condenser contamination - dust and dirt on the back wall worsen heat transfer, causing the compressor to work harder. This leads to an increase in the temperature of all metal elements, including the partition.
2. No Frost fan malfunction - if it is broken, cold air stops circulating, and heat accumulates in one place.
3. Freon leak - if there is insufficient refrigerant, the compressor wears out, trying to compensate for the loss of cold, which leads to overheating.
4. Problems with the thermostat - if the temperature sensor gives incorrect readings, the compressor may work longer than necessary.
5. Clogged capillary tube - violates circulation of freon, due to which heat is not removed effectively.
6. Incorrect installation - if the refrigerator is too close to the wall or furniture, ventilation is disrupted and heat accumulates inside the case.
7. Failure of the electronic module - in modern models LG the board is responsible for control, and its malfunction can lead to improper operation of the compressor.

Some of these problems can be fixed independently (for example, cleaning the condenser or rearranging the refrigerator), while others require specialist intervention.

Check the temperature of the partition (normal up to 45°C)

Inspect the back wall for dust

Make sure the ventilation grilles are not blocked

Listen to see if the fan is working (there should be a slight noise)

Check if it turns off compressor periodically-->

How to distinguish normal heating from breakdown: 5 signs

To understand whether you need to worry, pay attention to the accompanying symptoms. If, in addition to the heating of the partition, there is at least one of these signs, most likely the refrigerator is faulty:

If there are no additional symptoms, and the partition is just warm, then most likely this is a feature of your model. For example, in refrigerators LG DoorCooling+ (series GC-X247*), heating may be more noticeable due to intense air circulation.

⚠️ Attention: If the refrigerator LG has a system Smart Diagnosis (available in models after 2018), do not ignore the error signals on the display. Even if everything seems normal outwardly, a failure in the electronic system can lead to serious damage.

What to do if the partition heats up too much: step-by-step instructions

If you are convinced that heating is not normal, follow this algorithm to fix the problem:

1. Clean the condenser. Unplug the refrigerator, move it away from the wall and carefully vacuum the back grill. Use a soft brush to avoid it. damage the tubes.
2. Check the seals. doors. If they are worn out or dirty, warm air penetrates inside, causing the compressor to work harder. Wipe the rubber bands with soapy water and check their tightness with a sheet of paper.
3. Make sure the installation is correct. There should be at least 5-7 cm between the refrigerator and the wall for air circulation. Also check that the ventilation holes are not blocked by food inside the chambers.
4. Defrost the refrigerator. If a lot of ice has accumulated in the freezer, this may interfere with heat transfer. Turn off the power to 12-24 hours, let the ice melt, then wipe the chambers dry.
5. Check the operation of the fan. In models with No Frost it should periodically turn on. If there is no sound, the fan may be jammed or its motor has burned out.

If after these steps the heating does not decrease, most likely the problem lies in refrigerant system or electronics. In this case, it is better to contact a service center LG, especially if the refrigerator is under warranty.

How to check the No Frost fan without disassembling?

Open the freezer and listen. In normal mode, a slight air noise should be heard every 10-15 minutes - this is the fan running. If you can't hear it, try lightly tapping the back of the chamber (sometimes this will help "unlock" the blades). If there is no sound, the fan is faulty.

LG models that are prone to heating the partitions: a review of common series

Some series of refrigerators LG heat between the chambers more often than others due to design features. Here are the most “problematic” models:

• 🔹 LG GA-B489* —a popular series with a linear compressor, where heating of the partition up to 50°C is considered acceptable.
• 🔹 LG GC-B247* —two-compressor models, where heating can be uneven (stronger on the freezer side).
• 🔹 LG GB-B579* —refrigerators with a system DoorCooling+where intensive air circulation leads to increased heat transfer.
• 🔹 LG GR-N309* —models with a bottom freezer, where the partition often heats up due to the close location of the condenser.

Owners of these series often complain about heating, but in most cases this is not a defect. For example, the instructions directly indicate that the temperature of the partition can reach LG GA-B489YDQZ it is expressly stated that the temperature of the partition can reach 45-50°C during normal operation.

However, if your model is not included in this list, and the partition gets very hot, this is a reason for a more thorough diagnosis.

⚠️ Attention: B Refrigerators LG with function Smart ThinQ (control from a smartphone) sometimes experience software glitches that lead to the compressor not working properly. If the heating coincided with a firmware update, try resetting the settings to factory settings through the menu or mobile application.

When to call a technician: critical cases and cost of repair

There are situations when independent repair is impossible or dangerous. Contact the service center if:

• 🛠️ Appear on the partition drops of oil - this is a sign of freon leakage from the compressor.
• 🔥 Refrigerator turns off 5-10 minutes after switching on — there may be a malfunction of the starting relay.
• ❄️ In the freezer compartment a “coat” of ice is formed thicker 1 cm —system clogging or breakdown Defrost heating element.
• 💻 The display shows an error Er FF, Er IF or Er dH - problems with the fan, sensors or electronic module.

The cost of repair depends on the breakdown:

In LG refrigerators with a warranty of up to 10 years on the compressor (series with inverter motors), repair or replacement of the compressor are produced free of charge, even if the warranty on the model itself has expired. Check this at an authorized service center by presenting a warranty card.

Prevention: how to reduce the heating of the partition

To ensure that the partition between the chambers heats up less, follow these recommendations:

• 🧹 Clean the condenser every 6 months - this will improve heat transfer and reduce the load on the compressor.
• 🚪 Do not keep the doors open longer than 30 seconds - every extra hour of operation in this mode increases the heating by 10-15%.
• 🌡️ Set the optimal temperature: +4°C for the refrigerator compartment and -18°C for the freezer. Lower values make the compressor work harder.
• ☀️ Avoid direct sunlight —if the refrigerator is located near a window, stick reflective film on the glass.
• 🔌 Use a voltage stabilizer —network surges can disrupt the operation of the electronic module, which leads to overheating.

Also pay attention to chamber loading. If the refrigerator is filled to capacity with food, air circulation is disrupted and heat accumulates in one place. Optimal loading is no more 70% of the volume.

FAQ: Frequently asked questions about heating LG refrigerators

Why does the partition of the new LG refrigerator heat up more than the old one?

Modern models LG equipped with more powerful compressors and air circulation systems (for example, DoorCooling+ or Multi Air Flow). This speeds up cooling, but also increases heat transfer. When compared with old refrigerators (before 2010), where drip systems were used, the heating will indeed be more noticeable.

In addition, new models often use inverter compressorswhich operate almost without pauses, which also contributes to heating the case.

Is it possible to reduce heating by peeling off the decorative panel between the chambers?

No, this cannot be done! The decorative panel not only covers the internal elements, but also serves as an additional heat insulator. If you remove it, this may lead to:

• Impaired air circulation inside the case.
• Dust and moisture on electronic components.
• Loss of warranty (if the refrigerator is new).

If you are concerned about aesthetics, it is better to contact a service center for professional modification (if provided for by the design).

The LG refrigerator heats up between the chambers and makes gurgling sounds. Is this normal?

Yes, gurgling and fluid overflow these are normal sounds of the refrigerant (freon) operating in the system. They occur when freon changes from liquid to gas and back. This is especially noticeable in models with linear compressor (for example, LG GA-B489*), where the operating cycle is smoother.

However, if the gurgling is accompanied by:

• Continuous operation of the compressor (without pauses).
• The appearance of oily spots on the floor.
• A sharp decrease in refrigeration capacity.

-then this may indicate on freon leak or system clogging. In this case, diagnostics are needed.

After defrosting, the partition began to heat up more. What to do?

This is a typical situation that arises for two reasons:

1. Moisture accumulation — after defrosting, condensation could get on the electronics or fan, which temporarily disrupts heat transfer. Let the refrigerator operate 12-24 hours in normal mode - usually the heating returns to normal.
2. Impaired air circulation - if after defrosting you tightly filled the chambers with food, the fan No Frost can work with overload. Try to temporarily reduce the load.

If the heating has not decreased after a day, check if the fan is frozen (sometimes after defrosting, ice remains on the blades).

Can heating the partition affect energy consumption?

The heating of the partition itself does not increase electricity consumption. However, if it is caused malfunction (for example, condenser contamination or freon leakage), then yes - the compressor starts working longer, which leads to increased consumption.

To check:

• Measure the consumption of the refrigerator using wattmeter (the norm for classes A+++/A++ is 0.5-1 kW/day).
• Compare with passport data (indicated in instructions or on a sticker inside the chamber).

If the consumption exceeds the norm by 20% or more, this is a reason for diagnosis.