Owners of refrigeration equipment Belarusian brand often wonders whether it is possible to save electricity by turning off one of the cameras. This topic is especially relevant for models with a No Frost or combined cooling system, where independent circuits are responsible for different zones. The two-compressor circuit, typical for many models Atlant, structurally allows you to control the freezer and refrigeration chambers autonomously, which gives the user unique flexibility in operation.
The need for such a procedure may arise for various reasons: a long absence of the owners, a breakdown of one of the compressors, or the desire to use the device only as a refrigeration cabinet. It is important to understand that the deactivation process depends on the type of control system installed - mechanical or electronic. In both cases, intervention in the operation of the unit requires precision so as not to upset the pressure balance in the refrigerant system.
In this material we will analyze in detail the algorithms of actions for various modifications, explain the physics of the process and point out critical errors that can lead to equipment failure. The correct sequence of actions will preserve the life of the compressor and ensure the safe operation of the electrical appliance in non-standard mode.
The principle of operation of a two-compressor system
The main difference between refrigerators Atlant with two compressors is the complete autonomy of the cooling circuits. While in classic single-compressor models the refrigerant circulates in a single circle, two independent motors are installed here: one serves the refrigeration compartment, the second serves the freezer. This means that thermostats also work independently of each other, controlling the temperature in their zone.
This design allows you to theoretically turn off one of the cameras without affecting the operation of the other. When you turn off the freezer, the first compressor continues to operate as normal, maintaining the set temperature in the upper compartment. However, there are nuances associated with heat exchange between the chambers and the peculiarities of starting the engine at low ambient temperatures.
⚠️ Attention: The design ability to turn off does not mean that it is safe to do this often. Sudden changes in temperature inside the housing can lead to deformation of plastic elements and failure of seals.
The electronic control system in modern models Atlant can block the start of the compressor if sensors detect an abnormally high temperature in the adjacent chamber. Mechanical models in this regard are more “loyal” and allow you to manipulate thermostat settings with almost no restrictions, if you follow the logic of the automation.
Preparation for changing the operating mode
Before you begin manipulating the settings or power supply, it is necessary to carry out a number of preparatory events. Ignoring this step may result in food spoilage or equipment failure. The first step is to completely defrost the freezer, if there is ice in it, and remove all the food.
Next, you need to thoroughly wash and, most importantly, dry the interior. As the temperature rises, the remaining moisture will become an ideal environment for the growth of bacteria and the appearance of an unpleasant odor, which will subsequently be difficult to remove. Pay special attention to the drainage holes and corners of the chamber.
- 🧊 Defrost the freezer completely and remove the melted water.
- 🧼 Sanitize the chambers with a mild detergent.
- 💨 Leave the doors open for several hours to fully drying.
- 🔌 Make sure that the refrigerator is installed level and nothing interferes with ventilation.
It is important to check the condition of the rubber seals on the doors. When the freezer is turned off, temperature differences between compartments are minimized, but sealing remains critical to the operation of the main cooling circuit. A damaged seal will result in the operating compressor constantly turning on.
☑️ Refrigerator preparation checklist
Shutdown method via thermostat (Mechanics)
In models with mechanical control, such as popular series Atlant XM-4008 or XM-6021, turning off the freezer is done by unscrewing the thermostat knob to the extreme left position. Typically this position is marked with the number “0” or the word “Off”. In this case, the freezer compressor stops receiving a signal to start.
However, by simply unscrewing the regulator, you may encounter a situation where the compressor will still turn on periodically if the shutdown threshold is not reached in the chamber. A more radical, but effective method for mechanics is to physically disconnect the thermostat from the power circuit, but this requires disassembly and is not recommended without skills.
There is a nuance: in some older models, the freezer thermostat opens the circuit only of its compressor. If you have a model where thermostats are connected in series (rare, but happens in specific modifications), turning off one can stop the entire unit. Check the instructions for the specific model Atlant.
What to do if the knob scrolls endlessly?
If the temperature regulator rotates without a click and does not stop, the mechanism may be damaged or knocked down. In this case, temperature shutdown is not possible. Use the power outlet or surge protector method, but keep an eye on the temperature in the main compartment.
When the control is set to the “0” position or minimum value, the temperature in the freezer will begin to rise. The refrigerator compartment compressor will continue to work, maintaining cold in the upper compartment.
Setting up electronic control
Modern refrigerators Atlant with electronic control, for example series KHT or MXM with a display, offer more flexible settings. Here, turning off the freezer is often implemented through the “Vacation” function or manual temperature selection. To activate this mode, you must press the corresponding button on the control panel.
If there is no Vacation function, try setting the temperature in the freezer to the highest possible value (usually -6°C or higher). In some models, when the temperature is set above -6°C, the freezer compressor is blocked by software. The exact algorithm depends on the controller software version.
| Action | Indication on the display | System reaction |
|---|---|---|
| Activation of the "Vacation" mode | The palm tree icon is lit or “OFF” | The freezer is not cooling, the refrigerator is working |
| Setting T > -6°C | The numbers are flashing or fixed | The freezer compressor is stopped |
| Reset settings | Beep | Return to factory settings |
| Sensor error | Error code (for example, F1) | Operation blocking compressors |
Electronic models often have protection against “losing” of the compressor. If you try to set a temperature at which the engine turns on too often, the electronics may ignore the command or generate an error. Carefully monitor the indication after changing the settings.
Physically turning off the compressor
The most reliable, but technically complex method is to physically disconnect the idle compressor from the power supply. This method is applicable if the software does not give the desired result or if one of the compressors has already failed and is humming, but not cooling. To do this, you will need access to the back wall of the refrigerator.
First, the refrigerator must be de-energized by removing the plug from the socket. Then remove the rear metal cover at the bottom of the unit. You will see two compressors: they are usually located next to each other. You need to identify the one that is responsible for the freezer (often they are marked with stickers or arranged according to the principle: the left one is the freezer, the right one is the refrigerator, but it is better to check the passport).
⚠️ Attention: By opening access to electrical components, you risk losing the warranty. If the warranty period is still valid, use only software methods or contact a service center.
Locate the start relay and thermal protection on the target compressor. Carefully disconnect the power connector going to this unit. To insulate the contacts and avoid short circuits, wrap the disconnected wires with electrical tape. After this, you can turn on the refrigerator - only one circuit will work.
Rules of operation in single chamber mode
Operation of a two-compressor Atlanta with the freezer turned off has its own characteristics. Firstly, the overall noise level will be significantly reduced, since only one engine is running. However, the load on the remaining compressor may increase if you often open the refrigerator door, trying to compensate for the lack of cold from below.
Secondly, the thermal conditions inside the case will change. The wall between the compartments will no longer be “icy,” which can lead to condensation on the internal partitions. It is recommended to periodically wipe the joint between the chambers with a dry cloth. Also make sure that the food in the refrigerator compartment does not block the ventilation holes.
- ❄️ Make sure that the temperature in the main chamber does not fall below +2°C.
- 🔌 Use a surge protector with surge protection.
- 🧹 Regularly check the cleanliness of the condenser on the back wall.
- 🚪 Do not leave the freezer door tightly closed; if it is humid, it is better to keep it slightly open for ventilation.
Long-term operation in this mode is acceptable, but is not standard for all models. The manufacturer designs equipment to operate both circuits. If you plan to use the refrigerator in the “refrigerator only” mode all the time, make sure that the remaining compressor can cope with the load and does not overheat.
Frequently asked questions (FAQ)
Is it possible to turn off the freezer by simply unplugging the cord?
No, this will turn off the entire refrigerator. You need to turn off only one compressor through the terminal block or use a thermostat if the design allows separate control.
Will there be energy savings when turning off one chamber?
Yes, the savings will be approximately 40-50% of the total consumption, since one of the two compressors will stop working. However, the main compressor may work a little longer due to heat inflows.
What to do if, after turning on, the freezer does not start freezing?
Check whether the defrosting mode is blocked. Electronic models may require a reset. If after 2-3 hours there is no cold, there may be a pressure drop or the starter is faulty.
Is it harmful for the compressor to remain turned off for a long time?
It is not harmful for the compressor itself if the system is sealed. However, prolonged inactivity can cause the seals to dry out. It is recommended to turn on the freezer for a few hours at least once a month.