Modern brand refrigerators Pozis have proven themselves to be reliable equipment capable of preserving food freshness for years. However, many owners encounter difficulties during the initial setup, not understanding how exactly to adjust the degree of cooling. Correct setting of the temperature regime is not just a matter of comfort, but also a guarantee of food safety, as well as energy savings.
In this article we will analyze in detail the mechanics of the operation of thermostats installed in various models, from classic two-chamber devices to modern electronically controlled systems. You will learn to understand what the numbers on the scale mean, and you will be able to avoid common mistakes that lead to damage to the contents of the chambers or breakdown of the compressor.
Understanding the operating principles of your refrigeration unit will extend its service life. Incorrect settings often cause the formation of ice, the appearance of foreign odors, and even motor failure due to constant overloads. Therefore, it is important to approach the issue of setting with all responsibility.
Principles of operation of the Pozis thermostat
The main element responsible for the climate inside the chamber is thermostat. Most models Pozis use a mechanical regulator, which is a rotary knob with a digital scale. This mechanism is directly connected to the temperature sensor, which opens or closes the electrical circuit of the compressor.
The key point that often causes confusion is the numbering of the scale. The numbers on the regulator do not indicate degrees Celsius. They point to cooling intensity. The higher the value, the colder it will be inside. If you turn the knob to the maximum, the compressor will work almost without interruption, trying to achieve the lowest possible temperature.
It is important to consider that mechanical thermostats have a certain hysteresis (temperature spread). This means that the compressor will turn on when the temperature rises a few degrees above the set point, and turn off when it drops below the threshold. In models with electronic control (Smart), this process is controlled more accurately, but the principle of the relationship “higher number - colder” remains unchanged.
- ❄️ The number 0 or Min means complete shutdown of cooling.
- ❄️ Average values (2-3) correspond to normal mode operation.
- ❄️ Maximum values (4-5) create extreme cold.
- ❄️ The regulator does not show the exact temperature in degrees.
⚠️ Attention: Never leave the regulator at the maximum value for a long time unless necessary. This leads to freezing of the evaporator and a reduction in the life of the compressor.
Understanding this logic helps to avoid situations where the food in the refrigerator freezes, although it would seem that the regulator is set to the “average” value. For each model Position the manufacturer has determined the optimal ranges, which we will consider further.
Deciphering the thermostat scale
The thermostat scale in refrigerators Pozis is usually graduated from 0 to 5, 6 or 7, depending on the specific series. Once you understand the meaning of each zone, you can easily control the microclimate. Let's look at what is hidden behind these numbers and how they affect the operation of the system.
The minimum value zone is intended for situations when the refrigerator is empty or the room is very cold (for example, in winter in an unheated country house, if the model allows such operation). In this mode compressor turns on rarely, maintaining a temperature of about +8...+10°C.
Mid range is the “golden mean” for everyday use. This is where the balance between energy consumption and food safety is ensured. Normal temperature in the main chamber should be from +2 to +5°C.
Maximum values are used for quick freezing or when you have just loaded the refrigerator with a large amount of warm food. In this mode, the equipment operates at its maximum capabilities. Below is a table of correspondence between the handle position and the expected temperature conditions.
| Handle position | Operating mode | Expected t° (Camera) | Recommendation |
|---|---|---|---|
| 0 | Off | Room | Defrost or long shutdown |
| 1 (Min) | Weak | +8...+10°C | Small number of products |
| 2-3 | Normal | +4...+6°C | Daily operation |
| 4-5 (Max) | Intensive | 0...+2°C | Loading with products / Heat |
It is worth remembering that the actual temperature inside the chamber may differ from the expected one due to external factors. Load density, frequency of door opening and ambient temperature in the kitchen make their own adjustments. Therefore, the numbers on the scale are a guideline, and not an absolute constant.
Optimal modes for different seasons
The change of season directly affects the operation of refrigeration equipment. In summer, when the room temperature rises, heat exchange is disrupted and the refrigerator requires more effort to maintain coldness. In winter, the situation changes, and errors in the settings can lead to the equipment stopping turning on.
In the summer, it is recommended to set the regulator to the values 3 or 4. This compensates for the high ambient temperature. If you set the knob to minimum, the products may begin to deteriorate, since the compressor simply will not have time to cool the chamber to the required values.
In winter, especially in unheated rooms or with low heating, the situation needs to be controlled. If the room temperature is below +16°C, the refrigerator may not turn on in modes 1-2. In this case, it makes sense to switch the regulator to 3 or 4to ensure a sufficient temperature difference for the thermostat to operate.
Why may the refrigerator not freeze in winter?
The issue is in the principle of operation of the thermostat. It reacts to an increase in temperature in the chamber. If the room is cold, the air inside the refrigerator also does not heat up quickly enough for the thermostat to “wake up” and turn on the motor. Setting a higher number (more cold) artificially expands the range, forcing the equipment to work more actively.
However, there are nuances for single-compressor models. If you have an older single-compartment refrigerator with a drip system, the oil in the compressor may be an issue in extreme cold during the winter. It thickens and starting becomes difficult.
- ☀️ In summer, avoid setting the minimum values so that food does not disappear.
- ❄️ In winter, make sure that the refrigerator does not work non-stop at maximum unnecessarily.
- 🌡️ When sharp changes in room temperature, check the condition of the food more often.
⚠️ Attention: If your refrigerator Posis is equipped with a No Frost system, seasonal fluctuations affect it less, but the principle of adjusting the cooling intensity remains the same.
Instructions: step-by-step temperature setting
The process of setting the correct temperature does not require special tools, but requires a sequence of actions. Perform the setup when the refrigerator is already connected to the network and has been running for at least a few hours.
First, assess the current condition of the products and the temperature in the room. If you just bought a refrigerator or defrosted it, let it go to normal. Next, find your thermostat. In classic models, it is located inside the main chamber, usually in the upper right corner or above the door.
☑️ Setting algorithm
Turn the control knob to position 2 or 3. This is the starting point. Leave the refrigerator alone for 2-3 hours. Do not open the door frequently during this period to stabilize the indoor climate. After this, check the temperature of the food.
If the food in the upper part of the chamber is too warm, increase the value by one divisor. If the milk in the door begins to freeze, reduce it. Microtuning can take up to a day, since the inertia of the system is high. On models with electronic control (Smart), use the buttons on the control panel, following the indications on the display.
It is important not to make sudden movements knob from 0 to 5 and back. Mechanical thermostats do not like sudden jerks. Rotate smoothly without excessive force. If the handle turns too easily or, on the contrary, is jammed, the mechanism may be damaged.
Setting the freezer compartment
In two-chamber refrigerators Pozis one compressor and one thermostat are often used, which regulates the temperature in the main chamber. The freezer compartment in such models is cooled “according to the residual principle.” This means that the colder it is in the refrigerator, the colder it is in the freezer.
However, many modern models have a separate regulator for the freezer or a freezer mode switch. It can be located on the back wall of the freezer compartment or combined with the main one. If your model has a separate knob or button Super Freeze (Super Freeze), it is designed to briefly turn on the compressor at maximum power.
You cannot use the fast freezing mode all the time. This will lead to freezing of the evaporator and increased load on the engine. Turn it on only when you need to freeze a large amount of fresh food, and be sure to turn it off after a few hours (or wait for it to automatically turn off if the model is smart).
The normal temperature in the freezer should be -18°C or lower. If you see that the food is covered with a thick layer of ice or, on the contrary, begins to thaw when the refrigerator control is in the middle position, the seal may need to be repaired or replaced, and not just reconfigured.
- 🧊 Turn on the "Super Freeze" mode for a maximum of 24 hours.
- 🧊 Thick layer of snow reduces cooling efficiency.
- 🧊 Check the tightness of the freezer door regularly.
Typical problems and their solutions
Even with correct settings, users may encounter anomalies. Often the problem lies not in a breakdown, but in a misunderstanding of the operation of the equipment. For example, if the refrigerator is constantly buzzing does not turn off, and the food is frozen, most likely the regulator is set to maximum, or the thermostat itself has failed (contacts are stuck).
The opposite situation: the refrigerator is warm, although the knob is turned to 5. This may indicate freon leak, clogged capillary tube or compressor malfunction. In such cases, turning the knob further is useless and dangerous.
⚠️ Attention: If you turn the regulator to the maximum and the refrigerator is not cooling, do not try to “unwind” it by force. This can lead to a break in the thermostat rod.
Another common problem is the freezing of the “fur coat” on the back wall. In drip systems this is normal during the cycle, but if the ice is not melting, check to see if you have set the temperature too low. Also, the cause may be a loose fit of the door.
Models with electronics are characterized by failures in the control board. If the display goes blank or shows an error, try rebooting the refrigerator by unplugging it for 10-15 minutes. This will reset the controller errors.
Frequently asked questions (FAQ)
What should I do if the thermostat knob scrolls endlessly?
This is a sign of a broken thermostat. Most likely, the rod is cut off or the internal mechanism is damaged. In this position, the refrigerator will either not turn on or will work constantly. Part replacement is required.
Is it possible to keep a refrigerator in the country house in winter?
Most models Pozis belong to climate class SN-N (from +10 to +32°C). Operation at temperatures below +10°C can lead to oil solidification and compressor breakdown, as well as malfunction of the thermostat.
Why does ice freeze in the Pozis refrigerator, although it is not No Frost?
In drip defrosting systems (Static), ice freezes on the back wall during compressor operation - this is a normal physical process. The ice should melt when the motor turns off. If the ice does not melt, check the temperature in the room and the position of the regulator.
How to understand that the thermostat is faulty?
Main signs: the refrigerator does not turn on at all, works without interruption and freezes food, or turns on too often (every 2-3 minutes). The relay may also click, but the motor will not start.
Do you need to change the settings at night?
No, modern refrigerators operate in automatic mode. At night, when you do not open the doors, the temperature stabilizes itself. There are no special “night modes” for saving in mechanical models.