Modern two-compressor refrigerator models Atlant provide users with a unique opportunity to independently control temperature conditions in the refrigerator and freezer compartments. This design feature often confuses owners who are accustomed to a single control system, but it is precisely this that allows them to solve specific problems, such as temporarily turning off the refrigerator compartment while maintaining the operation of the freezer. Such a need may arise during long trips, when you need to defrost the main chamber, or when storing a large supply of frozen food, when the work of the upper compartment becomes redundant.
Understanding the principle of separate operation of the circuits is the key to proper control of a household appliance. Unlike single-circuit systems, where changing the settings affects the entire volume, here each compartment is responsible for its own compressor and its own thermostat. This means that you can completely stop the refrigerant circulation in the upper part of the unit while leaving the lower part running normally. However, despite the technical simplicity, the process requires attention to detail so as not to disrupt the operation of the electronics or mechanics of the device.
In this article we will analyze in detail the algorithms of action for various series of equipment, explain the physics of the process and point out critical points that are often overlooked. Correct settings will not only save energy, but also extend the service life of the unit, eliminating wasted engine operation. It is important to approach the issue systematically, taking into account the features of the specific model of your device.
The principle of operation of a two-compressor system
The fundamental difference between refrigerators Atlant with two motors is the complete autonomy of the cooling circuits. Each compressor has its own condenser, capillary tube and evaporator. This means that if one motor fails or is turned off by the user, the second continues to function without any failures or changes in the operating algorithm. It is this independence that allows you to implement the function of turning off only the refrigeration chamber.
Thermoregulation in such systems is also divided. Typically, there are two regulators located on the front panel or inside the refrigerator compartment: one controls the upper chamber, the second controls the lower one. Mechanical models use simple thermostats that open the electrical circuit when the set temperature is reached. Electronic systems are controlled by a microprocessor, which receives data from sensors and makes a decision to start or stop the corresponding compressor.
⚠️ Attention: When one of the circuits is turned off, the second continues to consume electricity and generate heat from the running engine. Make sure that the side walls of the refrigerator have sufficient clearance for ventilation, even if only one motor is running.
It is important to understand that turning off the refrigerator compartment does not mean completely de-energizing the appliance. Electricity continues to flow to the control panel, lights, and running freezer compressor. Therefore, there is no need to talk about complete energy saving in this case, although the savings compared to the operation of both circuits will be significant.
Mechanical control: setting thermostats
In classic models Atlant, such as the 4008 or 4208 series, control is carried out using rotary thermostat knobs. They are usually located on the top panel of the case or inside the refrigerator compartment. To turn off the refrigerator compartment, you need to find the regulator responsible for this particular compartment and move it to the extreme left position.
On the scale of a mechanical thermostat there are often digital symbols from 1 to 7, where 1 is the minimum cooling, and 7 is the maximum. However, for complete shutdown, there is a special position, which can be indicated by a number 0, a letter Off or simply a dot. Turning the knob to this position physically opens the thermostat contacts, and the signal to start the upper compressor stops coming.
The shutdown process is as follows:
- 🌀 Find the regulator labeled "Refrigerator" or having a corresponding snowflake icon without asterisks.
- 🌀 Slowly turn the handle counterclockwise until it stops.
- 🌀 Stop in position
0orOff. You should hear a slight click, indicating a break in the circuit. - 🌀 Check the indicators: if there is a light on the panel for the refrigerator compressor, it should go out.
It is worth noting that in some modifications the thermostats may be hidden behind a decorative panel. In this case, you must carefully remove the plastic cover to gain access to the settings. Do not use excessive force to avoid breaking the plastic clips.
Electronic control: working with the panel
More modern models, for example, series Atlant XM-4425 or XM-6025, are equipped with an electronic control system. Here, the process of turning off the camera is not done by mechanically breaking the circuit, but by software through the controller. On the front panel there is a display and mode control buttons.
To turn off the refrigerator compartment in such models, the “Vacation” function or manual temperature selection is often used. If you set the temperature in the refrigerator compartment to the maximum possible value (usually +10°C or +15°C), the compressor will turn on very rarely. However, to completely turn off, you need to find a special combination of buttons.
Action algorithm for electronic models:
- ❄️ Press the chamber selection button (usually indicated by a refrigerator symbol) until the refrigerator compartment temperature indicator starts flashing.
- ❄️ Using the value adjustment buttons, set parameter to position
Offor the maximum possible numeric value if the complete shutdown function is not explicitly provided. - ❄️ Confirm the action with the "OK" or "Enter" button. After a few seconds, the refrigerator compressor operation indicator should disappear.
In some cases, to activate the shutdown mode, you need to hold the setting button for 3-5 seconds. It is better to check the exact sequence in the instructions for a specific model, since the firmware of the controllers may differ even within the same series.
⚠️ Attention: In models with the system No Frost a complete software shutdown of the camera may cause the fan to stop working, but residual moisture may condense. It is recommended to periodically check the condition of the internal space.
Specifics of models with the "Vacation" function
Many users confuse simply turning off the thermostat with the special "Vacation" mode. This function is designed specifically for situations when the owners leave for a long time and empty the refrigerator compartment of food, but leave the freezer full.
The "Vacation" mode differs from manual shutdown in that it optimizes the operation of the electronics. In this mode, the refrigerator can periodically turn on the fan or briefly run the refrigerator compressor to prevent souring of the valves and the appearance of a musty smell. The temperature in the upper compartment is maintained at +10...+15°C.
A comparison of operating modes is presented in the table:
| Parameter | Manual shutdown (0/Off) | Vacation mode | Normal operation |
|---|---|---|---|
| HK compressor operation | Completely stopped | Periodic start-up | By sensor temperature |
| Temperature in cold room | Equal to room | +10...+15°C | +2...+5°C |
| MK compressor operation | Working | Working | Working |
| Energy consumption | Minimum | Low | Standard |
Using the "Vacation" mode is preferable if you are leaving for more than a week. This will prevent mold from forming on the walls and rubber seals, which will inevitably occur when the door is completely turned off and the door is closed.
Why can't you just pull out the cord?
Pulling the cord turns off the entire refrigerator, including the freezer. This will cause the food supplies below to defrost. Separate control allows you to store frozen food while the top part is not working.
Nuances of operation with partial shutdown
Operating a refrigerator Atlant with the refrigeration chamber turned off has its own characteristics. First of all, this concerns the temperature regime in the room. Since one side of the unit (or the grill at the back) will be heated by the running freezer compressor, and the other side will be at ambient temperature, uneven heating of the case may occur.
It is also worth considering humidity. If food or moisture remains in a non-functioning chamber, active growth of bacteria begins. Even if you thoroughly washed the camera before turning it off, a hermetically sealed door will create ideal conditions for microorganisms. Therefore, the “open door” rule is critically important when the upper section is idle for a long time.
What needs to be done before turning off the camera for a long time:
- 🧼 Thoroughly wash and dry the interior space.
- 🧼 Remove all removable shelves and drawers, wash them separately and store them outside the refrigerator.
- 🧼 Treat the door seals with a special product or a weak vinegar solution to prevent drying out.
- 🧼 Fix the door in the ajar position (you can use a plastic bottle between the shelves).
Do not forget that the lighting in the refrigerator compartment may continue to be on if you have not turned off the thermostat, but simply set the minimum temperature. Check if the light goes out when the door is closed to avoid excess heating inside.
☑️ Preparing to turn off the camera
Possible problems and their solutions
During operation, users can encounter situations where a disabled camera behaves unpredictably. For example, water may appear in it or, conversely, ice may freeze. This is often due to heat transfer from the operating freezer or high humidity in the room.
If you notice that condensation appears in the switched-off chamber, check the tightness of the door. It is possible that the magnetic seal has weakened and is allowing warm air from the room to condense on the cold walls adjacent to the freezer. Also, the cause may be a clogged drainage hole that needs to be cleaned.
Common faults:
- 🔧 Humming: A running freezer compressor can transmit vibration to the housing, causing the second motor to hum. Check the level of the refrigerator installation.
- 🔧 Ice freezing on the back wall of the refrigerator: Indicates a leak in the thermal insulation between the chambers or a defect in the damper (if there is one).
- 🔧 The indicator lights up when the regulator is off: Possible malfunction the thermostat itself or the control board.
⚠️ Attention: If, after setting the regulator to the position 0 the refrigeration chamber compressor continues to start and operate, contact the service center immediately. This indicates sticking thermostat contacts or a faulty relay, which can lead to network overload.
It is important to distinguish between normal operation and breakdown. Slight heating of the side walls on the side of the operating compressor is normal. But if the entire surface is heated or a burning smell is heard, the device needs to be de-energized.
Frequently asked questions (FAQ)
Is it possible to turn off an Atlant refrigerator with one compressor?
No, in single-circuit models with one compressor it is impossible to separate the refrigeration chamber from the freezer. Cooling occurs simultaneously in all compartments. Disabling the thermostat will stop the entire unit.
Will electricity be saved if you turn off only the upper chamber?
Yes, the savings will be approximately 40-50% of normal consumption, since one of the two compressors (which is responsible for the refrigeration compartment) will stop consuming energy. However, the second compressor will continue to operate as normal.
Is it necessary to defrost the freezer if the refrigerator compartment is turned off?
No, the freezer continues to operate as normal, so the automatic defrosting system (if provided by the model) or the need for manual defrosting remain unchanged.
What to do if, after turning on, the chamber does not cool?
After a long period of inactivity, the compressor may take time (up to 2-3 hours) to reach operating mode. If there is no cooling after 5-6 hours, check the position of the regulator and the presence of voltage in the network.
Is it harmful for equipment to keep one circuit turned off for a long time?
For modern equipment Atlant it is not harmful. Compressors are designed for long operating and idle cycles. The main thing is to monitor the cleanliness of the non-working compartment and the condition of the seals.