Owning modern household appliances often involves the need to understand specific functions, especially when it comes to dual-circuit cooling systems. Atlant refrigerator 2 compressors is a reliable design where cooling of the refrigerator and freezer departments are responsible for independent units. It is this autonomy that often raises questions among users who are accustomed to single-circuit models, where the freezer only works when the main unit is turned on.
Understanding the principle of separate operation compressors is the key to proper operation. Unlike older models, here you can completely turn off the refrigerator compartment, leaving the freezer running at full capacity, which is extremely convenient for creating large stocks of food. However, for this you need to correctly configure thermostats, since each of them controls its own circuit.
In this guide we will analyze in detail the process of activating and setting up the freezer in various modifications of equipment Atlant. We will consider both mechanical and electronic control systems so that you can confidently use all the capabilities of your device without the risk of spoiling products or damaging equipment.
The principle of operation of a dual-circuit cooling system
The fundamental difference between equipment with two compressors lies in the complete physical and electrical independence of the circuits. While in single-circuit models the cold is transferred from the freezer to the main compartment, here each circuit has its own evaporator, its own fan (in No Frost models) and its own control unit. This means that turning on the freezer does not depend on the state of the refrigeration compartment.
This scheme allows you to achieve faster freezing and precise temperature maintenance. When you set the operating mode, the signal goes directly to the corresponding unit, which starts the refrigerant compression cycle. If one of the compressors fails, the second will continue to perform its function, storing products in at least one of the compartments.
⚠️ Attention: An attempt to start the second compressor immediately after switching on the network may cause the protective relay to trip. Let the equipment stand turned off for at least 2-3 hours before the first start, so that the oil flows into the crankcase.
It is important to note that the electricity consumption in such models may be higher than in inverter single-circuit analogues, but the reliability of food storage increases significantly. Independent control allows you to flexibly adjust the climate inside the chamber depending on the current needs of the user.
Location and types of controls
To turn on freezer, you need to find the appropriate control. Depending on the series and year of manufacture Atlant refrigerator, the interface may differ significantly. Most often, the regulators are located on the top of the refrigerator compartment body or on the front panel of the door.
In mechanical models you will see one or two rotary switches with digital designations. If there is only one regulator, then the model is single-circuit. Dual-compressor systems are characterized by the presence of two separate “knobs” or buttons, often labeled “Refrigerator” and “Freezer” or having corresponding snowflake icons.
Electronic models are equipped with a display where the temperature is displayed in degrees Celsius. Control here is carried out through touch buttons or mechanical keys next to the screen. In such systems setting modes happens more accurately, in steps of 1 degree.
Step-by-step instructions: activating the freezer (Mechanics)
For owners of models with mechanical control, the activation process looks the simplest, but requires an understanding of the logic of the controller. Typically the freezer control is located on the right or is marked with a snowflake. Turning the knob clockwise increases the cooling intensity.
The "0" or "Off" position completely stops the freezer compressor. To start, you must turn the knob to position "1" or higher. However, if you have just defrosted the chamber or bought a refrigerator, you should not immediately set the maximum value. A sharp start at full power is stressful for the motor.
☑️ Starting the mechanical regulator
The optimal starting value for most models is division “3” or “4”. This provides a balance between freezing speed and energy consumption. If, after installing the handle in the working position, you hear a click and a hum, it means the contact has closed and the compressor has started working.
⚠️ Attention: Never rotate the mechanical thermostat handle with force if it is stuck. An attempt to turn it by force may break the plastic rod inside the housing.
Setting up electronic controls and display
In models with electronics, such as the series Atlant XM-4421 or newer, the freezer is turned on via a digital interface. Often, after disconnecting from the mains or a power surge, the settings may go wrong and the freezer will go into storage or defrosting mode.
To activate, find the button with the image of a snowflake or the inscription "Freezer". Clicking on it allows you to select the target temperature. In some models, you need to hold the button for 3-5 seconds to enter the setting mode, which is indicated by blinking indicators.
Modern ones electronic modules allow you to set the temperature with an accuracy of 0.5 degrees. The recommended mode for long-term storage is minus 18°C. If you need to quickly freeze fresh food, you can activate the Super Freeze mode, but do not forget to turn it off automatically or manually after 24-48 hours.
What does the flashing indicator mean?
If the temperature on the display is flashing or the red alarm indicator is on, it means that the current temperature is in camera higher than the specified one. This is normal in the first hours after turning on or loading warm products. If the flashing does not stop for more than 12 hours, check the tightness of the door.
Quick and super-freezing modes
The quick freezing function is a powerful tool that is found in many two-compressor models. Atlant. It forces the freezer compressor to work continuously, without stopping to rest, until you manually turn off this mode or the timer expires (usually 24 hours).
This mode should only be used when loading a large volume of fresh, unfrozen food. This allows you to quickly create a “crust” on products, preserving their structure and beneficial properties. However, constant operation at the limit of capabilities reduces the life of piston group compressor.
The table below will help you choose the right operating mode depending on the situation:
| Situation | Recommended mode | Temperature | Duration |
|---|---|---|---|
| Daily storage | Normal | -18°C | Continuous |
| Loading fresh products (up to 2 kg) | Super freezing | -24°C and below | 2-4 hours before and 12 hours after |
| Long-term storage (meat, fish) | Intense | -20°C...-22°C | Continuous |
| Defrosting or washing | Off / 0 | Ambient temperature | Up to 24 hours |
Remember that after the end of the super freeze cycle, you must return the settings to the standard position. Leaving the maximum power mode for weeks will lead to the formation of excessive ice (in drip systems) and excessive consumption of electricity.
Diagnostics: why the freezer does not turn on
There are situations when you have set the regulators correctly, but the freezer does not start working. In two-compressor models, this may be due to a malfunction of the second circuit, while the refrigeration compartment is functioning normally.
The first thing to check is the presence of voltage in the network and the integrity of the power cord. Then make sure the thermostat is not in the "Off" or "0" position. If the mechanical knob rotates freely without clicking, the thermostat itself may be faulty thermostat.
In electronic models, the cause may be a controller failure. Try turning off the power to the refrigerator completely for 15-20 minutes, and then turning it on again. If the problem persists and the compressor does not make any sounds (humming, vibration), the start relay or the compressor itself probably needs to be replaced.
⚠️ Attention: If you smell a burning smell or see sparking in the compressor area, immediately unplug the appliance. Further operation is prohibited to avoid fire.
Frequently asked questions (FAQ)
Is it possible to turn off the refrigerator compartment, leaving only the freezer running?
Yes, in two-compressor models Atlant this is possible. To do this, the refrigerator regulator knob must be moved to the “0” or “Off” position, and the freezer regulator must be left in the working position. This saves energy if you only need to store frozen food.
How long should the compressor run after turning on?
When you first turn on an empty refrigerator, the compressor can run continuously for 3 to 8 hours until it reaches the desired temperature. After entering the mode, it will begin to turn off. The normal operating cycle includes periods of rest.
Why does the freezer work, but does not freeze hard enough?
There may be several reasons: the door is not closed tightly, the seal is damaged, the condenser is clogged with dust, or there is a freon leak. Also check if the thermostat is set to the minimum value.
Do you need to defrost a two-compressor refrigerator?
If you have a model with the No Frost system, then you do not need to defrost the freezer, just wash the shelves. If this is a model with a “crying” evaporator inside the freezer, then defrosting is required at least 2 times a year if the ice layer is more than 5 mm.