Owners of modern refrigeration units are often faced with mysterious abbreviations on the display, which are not always clear at first glance. If you notice the inscription FRZ TEMP on the control panel of your LG device, this is a signal that the temperature selection mode for the freezer is activated. This abbreviation comes from the English "Freezer Temperature", which literally translates as freezer temperature. Understanding this function is critical for the correct operation of the equipment, as it allows you to keep food fresh for a long time.
Many users mistakenly believe that these symbols indicate some kind of malfunction or fast freezing mode, but in normal mode it is just a setting indicator. Control system The refrigerator goes into standby mode for your command so that you can set the desired degree of cold. Incorrect interpretation of the readings can lead to products being stored in unsuitable conditions, which is especially dangerous for meat and fish.
In this article we will look in detail at how exactly this mode works, what values are optimal and what to do if the indicator blinks or behaves strangely. You will learn how to avoid common setup mistakes and extend the life of your compressor. The standard factory setting for most LG models is -19°C or -20°Cwhich is considered the gold standard for long-term storage.
Acronym explanation and operating principle
When the display lights up FRZ TEMP, the LG refrigerator tells you that you are now controlling the lower section. This distinguishes the current mode from the main refrigerator setting, which is usually designated as REF TEMP (Refrigerator Temperature). The separation of these zones allows you to independently regulate the climate in each compartment, providing ideal conditions for different types of products.
The operating principle is based on electronic control of the dampers and compressor. When you change the value, the controller receives a signal and adjusts the operation of the system No Frost or static cooling. It is important to understand that changing the temperature is not an instantaneous process; the system requires time to stabilize the thermal conditions inside the chambers.
⚠️ Attention: Do not try to frequently change the temperature settings in a short period of time. Sharp jumps in target values cause the compressor to work with increased load, which can shorten its life.
To accurately diagnose the condition of the device, it is useful to know what other related indicators mean. Below is a table with the main symbols that can be found on LG control panels:
| Indicator | Decoding | Availability area |
|---|---|---|
| FRZ TEMP | Freezer temperature | Lower chamber |
| REF TEMP | Refrigerator temperature | Upper chamber |
| ICE PLUS | Accelerated ice formation | Freezer |
| SMART SAVING | Energy saving mode | All unit |
Understanding these symbols will help you navigate the menu faster. If you see a flashing FRZ TEMP along with other symbols, this may indicate a specific operating mode, which we will discuss below.
How to change the temperature in the freezer
The setting process may vary slightly depending on the model of your LG refrigerator, whether it is a series DoorCooling+ or classic Multi Air Flow. However, the general algorithm of actions remains the same for most devices with a digital display. You must first activate the editing mode if it does not turn on automatically when you open the door or press a button.
Usually there is a separate button on the control panel with the inscription "Freezer" or a snowflake icon. When you press it, you will see the numbers on the display begin to flash. This means that the system is ready to accept new input data. Use the "Up" and "Down" arrow buttons or the "Temp" button to select the desired value.
☑️ Setting the temperature
After you have set the desired degree, you need to confirm the choice. In some models this happens automatically after 5 seconds of inactivity, in others it requires a single press of the confirmation button. After this, the inscription FRZ TEMP will stop blinking and will display the current temperature inside the chamber.
⚠️ Attention: The control panel interfaces can be updated by the manufacturer. If the described actions do not correspond to your model, check the official instructions in your personal account or on the manufacturer’s website.
Do not forget that after changing the settings, the refrigerator will begin active cooling work. At this time, it may make louder sounds than usual - this is normal operation of the compressor and fans.
Optimal values for food storage
Choosing the right temperature is a balance between food preservation and energy consumption. Too low values force the equipment to work at the limit of its capabilities, consuming excess electricity. Too high temperatures can lead to spoilage of the contents of the freezer.
For most products, the range from -18°C to -20°C is considered optimal. With such indicators, bacteria and microorganisms completely stop their vital activity, and the structure of the products is not destroyed by ice crystals as quickly as with deep freezing. If you plan to store meat or fish for more than a month, you can lower the value to -24°C.
There are special modes that can temporarily change these settings:
- 🧊 Quick freezing mode: lowers the temperature to -24°C..-26°C by several hours to quickly freeze fresh food without losing juice.
- 💡 Vacation mode (Eco Saving): raises the temperature in the refrigerator compartment to +15°C, but leaves FRZ TEMP unchanged so that the freezer continues to work.
- ❄️ Intelligent cooling: The system itself analyzes the frequency of door opening and adjusts the operation of the compressor.
Reducing the temperature below -24°C does not provide a significant gain in shelf life, but significantly increases electricity consumption.
Quick freezing modes and their influence
The quick freezing function is often activated automatically when loading a large amount of warm food, but it can also be turned on manually. In this mode, the indicator FRZ TEMP can show extremely low values or flash in a certain rhythm. The purpose of the mode is to remove heat from the fresh product as quickly as possible so that water does not accumulate in the cells. has managed to form large crystals that tear tissue.
It is not recommended to use this mode continuously. Prolonged operation at extremely low temperatures leads to accelerated wear of seals and increased load on electrical components. After the products have frozen (usually after 24 hours), the mode should be turned off, returning the settings to standard -18°C..-20°C.
What happens if you don't turn off quick freezing?
If you leave the fast freezing mode active for weeks, the compressor will work almost without stopping. This will lead to overheating of the motor, an increase in the electricity bill and possible freezing of the evaporator, even in No Frost systems. Products may dry out (freezer burn).
Some models LG refrigerators are equipped with a system Smart Diagnosisthat can adjust the operation of the fast freezing mode depending on the current load. If you see that the temperature does not drop to the set temperature even in turbo freezing mode, check the tightness of the door and the amount of food inside.
Error diagnosis and flashing indicator
The situation when the sign FRZ TEMP begins to flash and a beep sounds along with it most often indicates a problem. First of all, this may mean that the temperature in the freezer has risen above the acceptable threshold (usually above -10°C or -12°C). This happens if you have just turned on the refrigerator, left the door open or loaded a large amount. warm foods.
If blinking continues for more than 2-3 hours after turning on or closing the door, a breakdown may have occurred. Among the reasons:
- 🔌 Power supply problems: a short-term shutdown of the light could reset the settings or defrost the evaporator.
- ❄️ Malfunction sensor: the temperature sensor in the freezer could fail and transmit incorrect data to the control board.
- 💨 Clogged air exhaust system: if the channels Multi Air Flow are clogged with ice or food, cold does not flow to the sensor.
In case of persistent flashing and error codes (for example, rF, FF or similar), you must contact a service center. Self-repair of complex electronic components without the appropriate qualifications can lead to the final failure of the device.
Energy efficiency and resource saving
Correct configuration FRZ TEMP directly affects utility bills. Each division below -20°C increases energy consumption by approximately 5-7%. Modern LG refrigerators have an energy efficiency class of A+ and higher, but only if used wisely.
For maximum savings, it is recommended:
- Set the temperature to -18°C for everyday storage.
- Do not put hot or warm foods directly into the freezer.
- Make sure that food does not block the ventilation holes.
It is also worth considering the location of the refrigerator. If it is near a battery or in direct sunlight, the system will have to work harder to maintain the setpoint. In such conditions, even ideal settings will not save you from excessive energy consumption. FRZ TEMP. In such conditions, even ideal settings will not save you from excessive power consumption.
Why may the temperature in the freezer differ from the set one?
The actual temperature may differ from the one set on the display due to thermal inertia. The sensor shows the temperature at a specific point, usually at the air flow outlet. In the corners of the chamber or near the door, the temperature may be 2-3 degrees higher. This is normal for all refrigerators.
Is it possible to completely turn off the freezer?
In most LG models, you cannot programmatically “turn off” the freezer while leaving the refrigerator running. However, in the "Vacation" mode (if there is one), the refrigerator compartment goes into economy mode, and the freezer continues to operate. Complete shutdown of the freezer is only possible by physically turning off the entire device from the network.
What to do if the display goes out after setup?
If the screen goes out a few seconds after setup, this is normal operation of the energy-saving display mode. When you press any button or open the door, it will light up again. If the display does not light up at all and the refrigerator does not work, check the power connection.