Maintaining the correct climate inside the refrigerator compartment is the foundation not only for the safety of products, but also for long service life of the compressor itself. Equipment owners Atlant often face the question of what is the reference value and how to achieve it without calling a technician. The optimal operating mode ensures the circulation of cold air, preventing food spoilage and the formation of ice on the walls.
Two-chamber models of the Belarusian brand, whether classic MHM 1700 or more modern series with No Frost, have their own thermoregulation features. Understanding how your specific unit works will help you avoid common mistakes when food in the upper compartment freezes and quickly turns sour in the lower compartment. Let's look at what indicators are considered normal and how to correct them.
It is important to immediately note that the ideal temperature depends on the load of the chambers and the season. In the summer, when the room is hot, the compressor has to work harder to maintain the desired level of cold. In winter, with central heating running, the situation can change dramatically, requiring user intervention in the thermostat settings.
Optimal temperature conditions by zone
In a two-chamber refrigerator, the space is divided into several functional zones, and the temperature in them cannot be physically the same. Cold air is heavier than warm air, so it sinks, creating a temperature gradient. In the upper part of the chamber, especially at the rear wall, the readings may be lower than on the door shelves.
For the main refrigerator compartment, the standard range is from +2 to +5 degrees Celsius. It is at these values that most bacteria slow down their activity, which allows milk, meat and ready-made meals to be stored for several days. If the thermometer shows values above +7 degrees, the risk of food spoilage increases sharply.
The freezer located below or above should provide deep freezing. Here the standard indicator is -18 degrees Celsius and below. Modern models Atlant often are equipped with a quick freezing function, which temporarily lowers the temperature to -24 degrees to preserve the structure of products.
Key parameters cold distributions are as follows:
- 🌡️ Top shelf: it is usually warmest here, about +5...+7°C, ideal for ready-made dishes.
- ❄️ Middle zone: stable +3...+4°C, suitable for dairy products and sausages.
- 🥩 Freshness zone (if any): special compartment with a temperature of approx. 0...+1°C for meat and fish.
- 🚪 Door shelves: the warmest zone, fluctuating from +5 to +10°C due to door opening.
⚠️ Attention: Never fill the refrigerator compartment with hot pots. This causes a sharp jump in temperature and humidity, causing the compressor to wear out, which can lead to its premature failure.
Setting the mechanical thermostat
In most models Atlant, such as the series MHM 1704 or 1709, temperature control is carried out mechanically. Inside the chamber there is a thermostat with a rotary knob, on which numbers from 0 to 7 (or from Min to Max) are printed. It is important to understand that these numbers do not indicate degrees Celsius.
The numbers on the regulator indicate the intensity of the compressor. Position "0" or "Off" completely disables cooling. One is the minimum cooling, and seven is the maximum power at which the compressor practically does not turn off. For everyday use, it is recommended to set the handle to the middle position.
If you notice that the food on the back wall is covered with an ice crust and puddles are collecting below, then the mode is too intense for the current conditions. It is necessary to turn the knob towards lower values. Conversely, if the milk quickly sours, but it’s warm inside, the regulator should be shifted towards larger numbers.
Setting algorithm looks like this:
- 🔧 Find the thermostat (usually inside the chamber at the top right or on the ceiling).
- 🔢 Set the knob to value 3 or 4 (middle position).
- ⏳ Wait 6-8 hours for the temperature to stabilize.
- 🌡️ Check the result using an external thermometer.
⚠️ Attention: Do not try to turn the thermostat knob sharply and with effort. The mechanism inside is fragile, and excessive pressure can lead to damage to the shaft or contact group, after which the part will need to be replaced.
Seasonality plays an important role. In the summer, when the apartment is +25°C and above, it makes sense to increase the cooling power by moving the regulator closer to 5. In winter, especially if the room is cool, a value of 2-3 is enough so that the compressor does not work in vain.
Electronic control and display
More advanced models Atlant, for example, series with index 6021 or 4425, are equipped with an electronic control unit with a digital display. Here, the adjustment is made with an accuracy of up to a degree, which eliminates guesswork and allows you to create ideal storage conditions.
The display usually shows two values: for the refrigerator (Fridge) and freezer (Freezer) chambers. By pressing the corresponding buttons, the user can directly set the desired temperature. The system itself will adjust the compressor operating time to achieve the specified parameters.
Electronics also allows you to activate special modes. For example, the Vacation function turns off the refrigerator compartment, leaving only the freezer running, which saves energy. The "Super Cool" mode forcibly lowers the temperature to a minimum for several hours.
Advantages of electronic control:
- 🎯 Precise temperature setting in 1-degree increments.
- 👁️ Visual control of current indicators in real time.
- 🔔 Alarm about an increase in temperature or a door that is not tightly closed.
What to do if the display shows an error?
If flashing symbols or codes appear on the screen (for example, F4, F5), this is a signal about a sensor malfunction. In this case, try unplugging the refrigerator for 10-15 minutes to reboot the system. If the error remains, a specialist diagnosis is required.
Table of recommended settings by season
External temperature directly affects heat transfer. The walls of the refrigerator give off heat to the environment, and the hotter the room, the worse this process. Therefore, the settings in winter and summer must be different to compensate for external conditions.
Below is a table that will help you navigate depending on the time of year and type of control. Remember that these are basic recommendations, and the final setting depends on the specific model and the degree of loading of the cameras.
| Season / Conditions | Room temperature | Mechanical regulator | Electronic control (HC) |
|---|---|---|---|
| Summer (hot) | +25°C and above | Position 4-5 | +3...+4°C |
| Off-season | +18...+22°C | Position 3 | +4°C |
| Winter (heating) | +20...+23°C | Position 2-3 | +4...+5°C |
| Winter (cold) | Below +18°C | Position 2 | +5°C |
Pay attention to the last point. If the refrigerator is in an unheated room or in the kitchen, where it is very cold in winter, the compressor may not turn on at all, since it “does not need” to cool the already cold chamber. To operate at low ambient temperatures, the model must have climate class SN or N.
Features models with the No Frost system
Refrigerators Atlant with the system No Frost (or Full No Frost) work differently than classic drip models. There is no frost on the walls, since moisture is removed outside the chambers, and cold air is forced to circulate using fans.
In such units, the temperature is distributed more evenly throughout the entire volume, but there is a nuance: the air is No Frost drier. This can lead to rapid weathering of products if they are not packaged. The temperature here should also be kept within +2...+5°C.
An important feature is the location of the sensors. In models with electronics, they read the temperature of the outgoing air flow. If you cover the ventilation holes with food, the sensor will “think” that the chamber is warm and turn on the compressor at full power, which will lead to freezing.
No Frost operating rules:
- 🌬️ Do not block the air circulation holes on the back wall.
- 📦 Pack food so that it does not dry out from the flow of cold air.
- ❄️ Once every six months, it is recommended to defrost the system for at least a day for hygiene (although technically this is not necessary).
⚠️ Attention: In No Frost refrigerators, you cannot check the temperature by simply applying a thermometer to wall The air there is constantly moving, and the readings will be incorrect. Use a glass of water placed on the middle shelf.
Common problems and solutions
Even with proper settings, users may encounter anomalies. For example, everything in the refrigerator compartment is frozen, although the regulator is set to minimum. Often this indicates sticking contacts of the thermostat or a freon leak (in the latter case, the compressor works constantly, but there is little cold, or vice versa - only the evaporator freezes).
Another situation: the refrigerator does not freeze, although it is at the “maximum”. Check the door seal for tightness. If the seal (elastic band) is worn out or dirty, warm air constantly enters and the unit cannot cope. It could also be a faulty start relay or the compressor itself.
If you hear the compressor turning on and off too often (every 2-3 minutes), this is a sign of a problem. A normal work cycle is about 10-15 minutes of work and 20-30 minutes of rest. Frequent switching on can be caused by incorrect settings or overheating of the motor.
Checking and calibrating the temperature
It is not always worth trusting the built-in indicators (if any) or “eyeball” sensations. To accurately diagnose your condition Atlanta it is better to use a regular alcohol or digital kitchen thermometer. This is the only way to objectively assess whether the equipment is coping with its task.
To take measurements, place the thermometer in a glass of water (so that the temperature inertia is higher) and place it on the middle shelf of the refrigerator. The door must be closed. Leave the device for at least 6-8 hours, preferably overnight, without opening the door unless absolutely necessary.
After taking the readings, compare them with the norm. If the deviation is more than 2-3 degrees in any direction, and adjusting the knob does not help, it may be necessary to calibrate the electronics or replace the thermostat. In models with mechanics, careful adjustment of the screw inside the thermostat itself sometimes helps, but this requires disassembly and skills.
☑️ Diagnostics of the operation of the refrigerator
Regular monitoring of temperature conditions Extends the life of products and your equipment. Remember that the ideal temperature for long-term storage of most products is +4°C. Compliance with this parameter in a two-chamber refrigerator Atlant guarantees the absence of bacteria and preservation of the taste of food.
Why ice freezes in the Atlant refrigerator, although it does not Frost?
Ice in drip models (crying evaporator) is a normal process, but the layer should not exceed 5-10 mm. If there is a lot of ice, check the drainage hole on the back wall. It could become clogged with crumbs. Ice also builds up if the door is not completely closed or a lot of wet food without lids is placed in the chamber.
Is it possible to transport the Atlas refrigerator lying down?
It is strictly not recommended to transport two-chamber refrigerators lying down, especially on the back or side. This may cause oil to leak into the refrigerant circuit or damage the pipes. Transportation is possible only in a vertical position with an inclination of no more than 40 degrees.
How to defrost the Atlant refrigerator correctly?
To defrost, unplug the appliance, remove all food and open the doors. Leave it to defrost naturally for 10-14 hours. Do not use a hairdryer, knife or hot water to speed up the process - this may damage the plastic and the evaporator. After defrosting, wipe the chambers with a dry cloth.
What does the flashing temperature indicator mean?
A flashing indicator on the display usually indicates that the temperature in the chamber has risen above the permissible norm. This can happen immediately after switching on, after loading a large amount of warm food, or when the door is not tightly closed. If the indicator does not stop flashing after several hours of operation, contact service.