Modern brand refrigeration units Pozis have earned a reputation as reliable units capable of keeping food fresh for years. However, in order for the equipment to work as efficiently as possible, it is necessary to correctly set the temperature regime. Incorrect adjustment can lead to rapid spoilage of food or the formation of excessive ice on the walls of the chamber. Understanding the operating principles of the thermostat is the key to the long service life of your device.
In most models, control is carried out mechanically or electronically, which directly affects the algorithm of user actions. If you have just purchased a device or are faced with the fact that food has begun to freeze, you will need to intervene in the operation of the system. Fine tuning allows you to optimize energy consumption and extend the shelf life of delicacies.
In this article we will analyze in detail all the nuances of climate control inside the chambers. You will learn how to move the thermostat needle to the desired position, what the numbers on the scale mean and how to use special freezing modes. A competent approach to operation will save you from unnecessary problems with maintenance.
The principle of operation of a mechanical thermostat
Most classic models Pozis, such as series Mir or Atlant (produced under brand), equipped with a mechanical regulator. This device is a handle located inside the refrigerator compartment, usually in the top corner or on the ceiling. The principle of operation is based on the expansion and compression of gas or liquid in a sensitive tube, which responds to changes in heat.
By turning the knob, you change the degree of tension of the spring inside the mechanism, which sets the threshold for turning the compressor on and off. It is important to understand that the numbers on the scale (usually 1 to 5 or 1 to 7) do not represent degrees Celsius. They point to cooling intensity. The higher the number, the colder it will be inside the chamber. Setting the regulator to maximum makes the compressor work almost without stopping.
You should not set the maximum value immediately after purchase. This can cause the evaporator to freeze and impede air circulation. The optimal starting value for most models is position 3 or 4. If the room is hot, you can increase the cooling, but this must be done gradually, giving the system time to stabilize.
⚠️ Attention: Suddenly moving the control knob from minimum to maximum can cause water hammer in the cooling system, which will shorten the life of the compressor. Turn the knob smoothly.
Why does the thermostat click?
A mechanical thermostat makes a characteristic click when the contacts open or close. This is a normal operating sound, indicating that the temperature control system is functioning properly and turns off the compressor when the set parameters are reached.
Electronic control and Display panel
More modern lines, for example Pozis Smart or models with the system No Frost, often equipped with an electronic control panel. Here, the adjustment occurs not through mechanical tension of the springs, but by sending signals to the controller. The temperature is displayed on a digital display, which greatly simplifies control.
To change parameters, touch buttons or mechanical keys located on the outer door or inside the chamber are usually used. Pressing the button Temp or Mode allows you to switch between the refrigerator and freezer compartments. Values are changed using the up and down arrow buttons. Electronics provides high accuracy, up to 0.1 degrees, which is critical for storing expensive products.
Some models have a locking function for the control panel, indicated by a lock symbol. If you hear a beep when you press the buttons, but the numbers do not change, the child lock may be activated. To unlock, hold the corresponding button for 3-5 seconds. The instructions for a specific model Pozis always contain the exact unlocking algorithm.
Optimal temperature conditions for different products
There is no universal temperature for all products. Dairy products, meat, vegetables and fruits require different storage conditions. Understanding these nuances will help you set up your refrigerator Pozis so that nothing goes missing ahead of time. The average temperature in the main chamber should be about +4°C...+5°C.
In the freezer compartment -18°C is considered the standard. In this mode, bacteria do not multiply, and the products retain their properties for up to 12 months. However, short-term storage of ice cream or ready meals allows lower values, for example -12°C...-14°C. To quickly freeze fresh food, the mode Super Freezeis activated, which lowers the temperature to -24°C.
- 🥩 Meat and fish: require the coldest place in the refrigerator compartment (usually the bottom shelf above the vegetable drawer), where the temperature stays around 0°C...+2°C.
- 🥛 Dairy products: it is better to store on the middle shelves, where it is stable at +3°C...+5°C, avoiding the door where the temperature fluctuates.
- 🥦 Vegetables and fruits: need high humidity and a temperature of about +6°C...+8°C, so their place is in special drawers below.
The distribution of products on shelves directly affects the efficiency of the refrigerator. If you fill the top rack with warm pots, the temperature sensor may think the chamber is hot and cause the compressor to work harder. Always allow hot foods to cool to room temperature before placing them inside.
Using the Quick Freeze Mode
The Quick Freeze feature, often labeled as Super Freeze or simply a snowflake icon, is a powerful tool in the owner's arsenal Pozis. It is designed for blast freezing large volumes of fresh food. In this mode, the compressor operates continuously, ignoring the readings of the main thermostat, in order to reduce the temperature in the freezer as quickly as possible.
This mode should be used with caution. If you leave it on for several days, the temperature in the freezer may drop to critical values (below -30°C), and in the refrigerator compartment, on the contrary, it may rise, which will lead to spoilage of food on the upper shelves. In addition, continuous operation of the motor leads to increased energy consumption.
☑️ Correct use of Super Freeze
In mechanical models, the quick freezing mode switch may be located next to the main thermostat knob. It is often designed as a separate button or toggle switch. After the food has frozen (usually after a day), it is imperative to return the switch to its original position. Otherwise, the system will not switch to normal temperature maintenance mode.
Seasonal adjustment of settings
Ambient air temperature significantly affects the operation of refrigeration equipment. In the summer, when the apartment is hot, heat exchange is disrupted, and it is more difficult for the refrigerator to release heat to the environment. In winter the situation is reversed. Owners Pozis need to take into account the seasonal factor when adjusting.
In the summer, if the room is above +25°C, it makes sense to slightly increase the cooling by moving the mechanical regulator to a number closer to the maximum (for example, from 3 to 4). However, make sure that a “fur coat” of ice does not form on the back wall. If you notice an active increase in frost, it means that the compressor has been running for too long and the power should be reduced.
In winter, when the room is cool, the mechanical thermostat may be “lazy” to turn on. The refrigerator will stand for a long time, and the temperature in the chamber may rise above normal. In this case, the regulator should be turned towards higher values. For models operating in unheated rooms, there are special climate classes, but ordinary household appliances Pozis are designed to operate at ambient temperatures from +10°C to +32°C.
⚠️ Attention: Do not install the refrigerator next to heat sources (radiators, stoves, windows with direct sun). This will force the thermostat to work in extreme mode, which will lead to breakdown.
Diagnostics of temperature problems
Sometimes users are faced with a situation where adjusting the knob has no visible effect. Products either flow or turn into ice. This may indicate a malfunction of the thermostat itself, a freon leak, or problems with the door seal. Before calling a technician, it is worth carrying out an initial diagnosis.
Check the tightness of the door. If the seal is dirty or damaged, the cold will escape and the compressor will thresh without stopping, but the desired cold will not occur. It is also worth listening to the operation of the motor: if it turns on very often or, conversely, does not turn on for hours with the regulator turned to maximum, this is an alarming sign.
| Symptom | Possible cause | Action |
|---|---|---|
| Water on the floor, the food is warm | The regulator is turned off or faulty | Check the position of the handle, defrost |
| Strong ice on the back wall | The cooling mode is too strong | Reduce the value by thermostat |
| The compressor hums, but does not cool | Freon leak or compressor breakdown | A technician needs to be called |
| The refrigerator turns on rarely | Weak mode or sensor failure | Increase cooling power |
If after defrosting for 10-12 hours and setting the regulator to average values, the problem does not disappear, you will probably need to replace the thermostat. In models Pozis this element is often available for replacement, but requires opening the plastic panel and having tools to work with electrical equipment.
Frequently asked questions about setup (FAQ)
What to do if the thermostat knob scrolls infinitely?
If the knob rotates without clicks or changes in resistance, most likely the internal axis of the regulator is broken or has come off the rod. In this case, temperature adjustment is impossible and the thermostat assembly must be replaced. Continuing operation in this mode is dangerous for the compressor.
Is it possible to completely turn off the refrigerator with the regulator?
Yes, in most mechanical models Pozis the extreme counterclockwise position (usually indicated by the number 0 or the word “Off”) opens the electrical circuit. The compressor stops receiving power. However, for a long-term shutdown, it is better to unplug the cord from the socket.
Why is it +10°C in the refrigerator compartment, although the regulator is set to 5?
This may indicate several problems: a refrigerant (freon) leak, loss of compressor performance, or sticking of the thermostat contacts. Also check whether the ventilation holes inside the chamber are not blocked by food, which interferes with air circulation.
How often should you defrost a Pozis refrigerator?
For models with manual defrosting (drip system), it is recommended to carry out the procedure 1-2 times a year or when the layer of ice on the back wall reaches 5 mm. Models with the system No Frost do not need defrosting; they just need to be washed periodically.