Have you ever looked at the instructions for the refrigerator to understand what is hidden behind the numbers 1, 2, 3, 4, 5 on the temperature controller? Most users simply turn the wheel by eye, not realizing that incorrect settings can reduce the shelf life of products by 30–50%. And some even think that these numbers indicate degrees - and they wonder why in the freezer -18°C at "5", and in the main chamber only +4°C at the same mark.
In fact, the numbers on the refrigerator scale are symbols of cooling power, and not a direct link to degrees. Their interpretation depends on the model, type of compressor and even the climate in your kitchen. In this article, we will not only explain what each number means, but also show how to choose the optimal mode for meat, milk, vegetables and ice cream - so that the food does not spoil and the electricity bill does not break records.
Why numbers 1–5 are not equal to degrees: the principle of operation of the scale
The main misconception is to believe that “1” = +1°C, “2” = +2°C and so on. In fact, the numbers indicate the intensity of the compressor:
- 🔹 1 — minimum power (the “warmest” mode)
- 🔹 3 —average power (recommended mode for most refrigerators)
- 🔹 5 —maximum power (the “coldest” mode)
But there is a nuance: Samsung, LG and Atlant can use different logic. For example, in models NoFrost the numbers often correspond to target temperature (1 = +8°C, 5 = +2°C), and in drip refrigerators - compressor operating time. To avoid mistakes, look at the instructions for your model - usually there is a correspondence table.
Another secret: in two-chamber refrigerators there are scales for the main chamber and freezer not synchronized. So, “3” in the refrigerator compartment can mean +4°C, and “3” in the freezer can mean –18°C. This is due to different tasks: it is important to maintain humidity in the main chamber, and to quickly freeze food in the freezer.
Table: what do numbers 1–5 mean in different types of refrigerators
We analyzed the instructions for 50+ models of popular brands and compiled a summary table. Please note: the values may differ by ±1–2°C depending on the load in the refrigerator and the room temperature.
| Number on the scale | Refrigerator compartment (drip system) | Refrigerator compartment (NoFrost) | Freezer compartment |
|---|---|---|---|
| 1 | +6...+8°C (suitable for drinks and sauces) | +7...+9°C (risk of spoilage of meat/fish) | –8…–10°C (defrosting in 12–18 hours) |
| 2 | +4…+6°C (optimal for vegetables and fruits) | +5…+7°C (medium mode) | –12…–14°C (storage of semi-finished products) |
| 3 | +2…+4°C (recommended for meat, milk, cheeses) | +3…+5°C (the most universal mode) | –16…–18°C (long-term storage) |
| 4 | +1…+2°C (risk of freezing of greens and fruits) | +1…+3°C (for hot climates) | –20…–22°C (fast freezing) |
| 5 | 0…+1°C (only for short-term storage of perishable products) | 0…+2°C (may turn on Super Cool) |
–24…–26°C (maximum freezing) |
⚠️ Attention: In refrigerators with electronic control (for example, Bosch KAN92VI30R or Liebherr CNef 4315), the numbers on the display may indicate exact degrees, rather than conditional modes. Check this in the menu. Temperature Settings.
How to choose the optimal number: product instructions
There is no “ideal” number for everyone. The optimal mode depends on what you are storing:
- 🥦 Vegetables and fruits: digit 2 (+4…+6°C). At lower temperatures, they lose vitamins and may freeze (especially cucumbers and eggplants). The exception is apples and pears, which last longer at 3.
- 🥩 Meat and fish: digit 3–4 (+1...+4°C). At “5” the products may dry out, at “1–2” they will spoil faster. For long-term storage (more than 3 days), use vacuum bags.
- 🥛 Dairy products: number 3 (Yogurts and sour cream do not tolerate temperatures below +2°C - they may). delaminate.
- 🍦 Ice cream and semi-finished products: place in the freezer 4–5 (–18…–24°C). At “3” the ice melts faster, and the products become covered with frost.
If your refrigerator has a freshness zone (BioFresh, FreshZone), separate rules usually apply for it. For example, in Liebherr it is recommended to set +1°C for this zone (corresponds to “4” on the main scale), and in Samsung — +3°C («3»).
☑️ Checking the correct settings of the refrigerator
Errors during setup: what spoils products and increases the electricity bill
Even a small mistake in choosing a number can lead to dire consequences. Here are the most common mistakes:
- Keep “5” in the main chamber at all times. This will not make the food fresher, but will increase energy consumption by 20-30%. The compressor will work without interruption, which reduces its resource.
- Ignore seasonal changes. In the summer at +30°C in the kitchen, the refrigerator needs a number 1-2 units higher than in winter. For example, if in winter you set it to “2”, in the summer switch to “3”.
- Store in the freezer at "1-2". At -8...-10°C, food does not freeze, but only freezes. creates the illusion of freshness, but in fact bacteria continue to multiply.
- Do not. check the temperature with a thermometer. The numbers on the scale are a recommendation, not a guarantee. Buy a separate thermometer for the refrigerator (costs ~100 rubles) and measure the real values.
Another typical problem is uneven cooling. If it is +8°C on the upper shelves and +2°C on the lower ones, it is not the regulator that is to blame, but the incorrect loading. Cold air circulates from top to bottom, therefore:
- 🥶 Place drinks and ready meals on the top shelves (they don’t need extreme cold).
- ❄️ On the middle ones - dairy products and eggs.
- 🥩 On the lower ones (above the vegetable boxes) - meat and fish.
What to do if the numbers on the scale do not correspond to the real temperature
Sometimes, even with the correct settings, the refrigerator “lies.” For example, you set it to “3”, but the thermometer shows +8°C. Reasons and. solutions:
| Problem | Possible cause | Solution |
|---|---|---|
| Temperature above normal | The condenser is clogged (dust on the back wall) | Turn off the refrigerator, vacuum the grille |
| The freezer works, but the refrigerator compartment does not | The damper (valve between the chambers) is jammed | Try to defrost the refrigerator for 24 hours |
| The numbers jump on their own | The thermostat or sensor is faulty | You need diagnostics from a technician (cost ~1500–3000 rubles) |
An error flashes on the display (for example, E1 or H) |
NoFrost system failure or evaporator icing | Defrost the refrigerator for a day, then turn it on again |
If the refrigerator is new, but does not hold the temperature, check:
- 🔌 Is it connected to the network correctly (not through an extension cord!).
- 🚪 Does the door close tightly (try a piece of paper - if it falls out, the seal needs to be replaced).
- ☀️ Is it standing next to a battery or stove (minimum distance - 50 cm).
⚠️ Attention: In refrigerators with an inverter compressor (for example, Hitachi R-VG460PUC6 or Panasonic NR-BN30AW1), the numbers on the scale can be automatically adjusted depending on the load. Do not be alarmed if, after loading a large number of products, the regulator itself switches from “3” to “4” - this is normal.
Secret modes: what numbers outside 1–5 hide
Some refrigerators have “hidden” functions that are activated by unusual combinations of numbers. For example:
- 🔄 Quick freezing (
Super Freeze). In models Siemens And Bosch to do this, turn the freezer knob to “5” and hold for 3 seconds. The temperature will drop to –30°C for 24 hours, and then return to normal. - ❄️ Blast freezing. B Liebherr the combination of “4” (refrigerator) + “5” (freezer) turns on the mode
FrostSafein which food is frozen 2 times faster. - 🌿 Vacation mode (
Holiday). B Electrolux i Zanussi to activate, you need to set “1” in the main chamber and press the buttonEco(if available).
In refrigerators with touch controls (for example, Samsung RB37J5240SS) hidden modes are often activated through the menu. Press the button Fridge for 5 seconds - a service menu with additional settings may open.
How to reset the refrigerator to factory settings?
In most models, this requires unplugging the refrigerator for 10 minutes, then turning it on immediately. set the knob to "3". If this does not work, try the combination: press and hold the buttons Super Cool + Eco (or similar) for 10 seconds. refrigerator LG And Samsung this process is called Factory Reset.
FAQ: answers to frequently asked questions about numbers in the refrigerator
Is it possible to set “5” in the refrigerator compartment in the summer if the kitchen is very hot?
No, this will overload the compressor. It is better to select “3” and make sure that the refrigerator is located away from direct sunlight. If the temperature in the compartment is still above +5°C, check the door seal or call a technician. diagnostics.
Why in the freezer at “5” the products are covered with ice, but at “3” they thaw?
This is a sign of a malfunction of the thermostat or sensor. Normally, the difference between “3” and “5” in the freezer should be 4–6°C (for example, –18°C and –24°C). If the difference is more or less, it is necessary. professional adjustment.
How often do you need to change the number on the regulator?
Ideally - 2 times a year: to “3” in autumn/spring and to “4” in summer/winter (if the refrigerator is in an unheated room) Also temporarily increase the number by 1-2 divisions after a large load of products (for example, before the holidays).
What to do if the numbers on the scale are erased and you can’t see which mode is on?
Take a waterproof marker and carefully draw on the numbers. An alternative is to take a photo of the scale in good lighting and print it out as a reminder. As a last resort, rely on the clicks of the regulator: usually “3” is the middle position.
Does the choice of number affect the service life of the refrigerator?
Yes, but indirectly. Constant operation at “5” wears out the compressor faster, and too low numbers (for example, “1” in the summer) make it turn on more often. It is optimal to keep the regulator at “3” and defrost the refrigerator every 6 months.