Modern refrigerator Pozis is reliable equipment designed to preserve food freshness for many years. However, even the highest quality equipment requires proper handling, and the key aspect here is the correct temperature setting. Many users are faced with a situation where the food in the chamber either freezes, becoming covered with an ice crust, or, conversely, begins to deteriorate faster than expected. Understanding the principles of operation of the thermostat and knowing the features of your model will allow you to avoid these problems and extend the life of the compressor.
Unlike electronic control systems, which are often found in premium brands, most models Pozis refrigerators are equipped with mechanical regulators. This time-tested solution is highly reliable and maintainable, but requires the owner to have some skill in interpreting scale readings. The numbers on the thermostat knob do not mean degrees Celsius, but indicate the intensity of cooling. Incorrect setting of the mode can lead to continuous operation of the motor, which is fraught with increased energy consumption and wear of components.
In this article we will analyze in detail the setting algorithms for various series of equipment, explain how to convert scale divisions into understandable temperature values, and answer questions that often arise during initial operation or after defrosting. Correct calibration is the key to ensuring that your supplies remain fresh, and that your equipment will work quietly and efficiently.
The principle of operation of a mechanical thermostat
The main element of climate control inside chambers in equipment Pozis is a mechanical thermostat. This device works on the principle of closing and opening an electrical circuit depending on the temperature of the sensing element, which is usually located inside the refrigerator compartment or on its wall. When the temperature rises above a preset threshold, the contacts close, starting the compressor. As soon as the air cools to the desired temperature, the circuit opens and the engine stops. Understanding this cycle is important for diagnostics: if the refrigerator works without interruptions or, on the contrary, sits for too long, the problem often lies precisely in the settings or malfunction of this unit.
On the front panel or inside the refrigerator compartment there is a control knob with a digital scale, usually from 1 to 5, 6 or 7. There is a direct relationship here: the higher the number, the lower temperature inside the chamber. Setting the knob to the maximum value (eg 7) causes the compressor to run almost continuously, trying to reach extremely low values, which can lead to freezing of the evaporator. On the contrary, position “1” or “Min” means minimum cooling, at which the motor turns on rarely and runs in short cycles.
⚠️ Attention: Never set the regulator to the maximum value (7 or Max) under normal operating conditions. This will not speed up the cooling of the products, but is guaranteed to lead to the formation of a “fur coat” on the back wall and possible failure of the compressor due to overload.
It is important to consider that a mechanical thermostat responds to the air temperature at the location of the sensor, and not to the temperature of the products on the shelves. Therefore, after loading a large amount of warm food or after defrosting, the system requires time (from 2 to 4 hours) to stabilize the performance. During this period, you should not turn the regulator knob, trying to “speed up” the process, as this will disrupt the settings and lead to incorrect operation in the future.
Optimal temperature conditions for different products
To ensure long-term storage and preserve taste, it is necessary to maintain different conditions for different groups of products. In the refrigerator compartment Pozis, despite the uniform thermostat setting, there are zones with different temperatures. The top shelves are usually warmer, the bottom shelves are cooler, and the door is the warmest zone. Correct distribution of reserves allows you to compensate for the natural temperature gradient inside the volume.
Consider the basic storage requirements:
- 🥩 Raw meat and fish: require the coldest mode, ideally from 0 to +2°C. It is better to place them on the bottom shelf, closer to the back wall, where it is coldest.
- 🥛 Dairy products and ready-made foods: feel optimal at temperatures from +2 to +4°C. This is the middle zone of the refrigerator, where conditions are most stable.
- 🥦 Vegetables and fruits: prefer a mode from +4 to +6°C. For them there are special boxes (containers) at the bottom of the chamber, where the humidity is higher and the temperature is slightly higher than on open shelves.
- 🍺 Drinks and canned goods: can be stored at temperatures up to +8...+10°C, so door shelves are ideal for juices, water and sauces.
For most models Pozis refrigerators the “golden mean” is considered to be setting the regulator to division 3 or 4. It is in this position that a balance is ensured between effective cooling and economical power consumption. If you notice that the milk is turning sour faster than two days, it makes sense to add one division (for example, from 3 to 4). If the vegetables begin to freeze at the back wall, the regulator should be turned towards decreasing the value.
It is worth remembering that the fullness of the chamber also affects the temperature regime. An empty refrigerator cools down faster, but also heats up faster when the door is opened. A full chamber holds the cold better, but requires a more powerful initial compressor operation. Therefore, after a large purchase of products, it is recommended to temporarily increase the cooling mode, and after a day return the handle to the standard position.
Step-by-step instructions for setting the temperature
The process of setting the correct cooling mode does not require special tools, but does require a sequence of actions. Before starting the adjustment, make sure that the refrigerator is connected to the network and has been operating normally for at least 5-6 hours. This is necessary for the system to enter the operating cycle and the thermostat readings to be objective.
Follow the following steps for correct setup:
- Find the thermostat. In most models Pozis it is located inside the refrigerator compartment on the right side wall or on the ceiling of the chamber. In some older models, the handle may be located on the outside, above the door.
- Assess the current condition of the products. If they freeze slightly or, conversely, are too warm, decide on the direction of rotation of the handle. Turning clockwise usually enhances cooling (increases the number), counterclockwise - weakens it.
- Make a smooth adjustment. Don't make sudden movements. If the knob is set to “3”, and you want to set it to “4”, turn it smoothly until it clicks or all the way in the desired position.
- Fix the setting time. Remember or write down what time you changed the settings so that you can check the result after 4-5 hours.
☑️ Checklist for correct settings
After changing the position of the thermostat knob compressor it may not start instantly. This is normal, as the system has a time delay to protect against frequent switching on. Give the technology time to react. If 30-40 minutes after changing the settings the nature of the engine operation has not changed (for example, it should have turned on, but is silent, or, conversely, it should have turned off, but is humming), a more radical adjustment or check of the serviceability of the thermostat itself may be required.
Deciphering the thermostat scale
One of the most common causes of incorrect operation is incorrect interpretation of the numbers on the regulator scale. Users often mistakenly believe that the number “1” means +1 degree, and “5” means +5 degrees. This is a fundamental misconception that can lead to food spoilage. In mechanical systems Pozis numbers indicate steps of cooling power.
For clarity, we provide an approximate table of correspondence between the position of the handle and the actual temperature in the refrigerator compartment (provided that the equipment is in good working order and the load is normal):
| Handle position | Operating mode | Approximate t° in the chamber | Recommendation |
|---|---|---|---|
| 1 (Min) | Minimum cooling | +8...+10°C | In summer or at low load |
| 2-3 | Medium mode | +4...+6°C | Standard operating mode |
| 4-5 | Intensive cooling | +1...+3°C | With a large load of products |
| 6-7 (Max) | Maximum cold | 0...+2°C and below | Only for quick freezing (short-term) |
As can be seen from the table, the optimal operating range for everyday use is the knob position between 2 and 4. Going beyond this range is justified only in specific situations: extreme heat in the room, the need to quickly cool a large amount of food, or, conversely, saving energy with a minimal load.
It is also worth noting that the scale may differ slightly depending on the specific series Pozis refrigerators. In models with electronic control (display on the door), the adjustment is made more precisely, in steps of 1 degree, but the principle of “higher number, colder” remains the same there. In mechanical models, the step between divisions can be 2-3 degrees, which makes the setting less accurate, but quite sufficient for domestic needs.
Seasonal characteristics and external factors
The ambient temperature has a direct impact on the operation of the refrigerator equipment. Pozis, like any other equipment, is designed to work in a specific climate class, usually SN-ST (from +10 to +38°C). However, even within this range, seasonal fluctuations require adjustment of the thermostat settings to maintain a stable microclimate inside the chambers.
In the summer, when the temperature in the kitchen can reach +25...+30°C, heat transfer from the condenser is difficult. The compressor takes more time and effort to remove the heat. At this time of year it is recommended to set the regulator to medium settings (3-4) to compensate for external heating. If you set the knob to minimum (1), the refrigerator may simply not be able to cope with the heat flow, and the food will begin to spoil.
In winter, especially in unheated rooms or when ventilating the kitchen, the situation is the opposite. Cold air from outside makes the condenser easier to operate, but can lead to hypothermia. In winter, it makes sense to reduce the cooling intensity by moving the knob to position 2 or 3. This will prevent the doors from freezing and excessive drying of food.
Do not forget that frequent opening of the door, especially in the hot season, brings warm, humid air inside. This leads to the formation of condensation and ice. Under such conditions, the thermostat will command the engine to turn on more often. Try to minimize the time when the door is open and check the tightness of the seals.
Typical problems and methods for solving them
Even with correct settings, users may encounter anomalies in the operation of the equipment. Most often, they are associated with incorrect interpretation of the signals that the refrigerator gives, or with minor malfunctions that you can fix yourself. Understanding the nature of these problems will help you avoid calling a technician to solve simple problems.
Let's consider the most common situations:
- ❄️ Increasing “fur coat” on the back wall: This is a sign that the temperature is too low or excess moisture gets into the chamber. Try decreasing the value on the thermostat by 1 notch and checking the tightness of the door seal.
- 🔊 The refrigerator runs non-stop: If it is not extremely cold in the chamber, the thermostat may be “stuck” in the on position or has lost calibration. A freon leak may also be the cause, but first try reducing the power setting.
- 💧 Water on the floor or in the lower part of the chamber: Often this is a consequence of defrosting ice that has formed due to the temperature setting being too low. Defrost the refrigerator completely (for 10-12 hours) and turn it on with a lower value on the regulator.
⚠️ Attention: If, after defrosting and setting the regulator to average values (3-4), the refrigerator continues to work continuously for more than 12 hours or does not turn on at all, the problem may be a malfunction thermostat, start relay or refrigerant leak. In this case, professional diagnostics are necessary.
Another common problem is insufficient cooling at maximum settings. If the knob is turned up to 5-6, and the food is warm, most likely the problem is not in the settings. Check to see if the air ducts are blocked (in No Frost systems) or if the refrigerator is placed close to the wall, which prevents air circulation around the rear grille. Also make sure that the door closes tightly and is not warped.
What to do if the thermostat knob spins endlessly?
In some older models, when the mechanism wears out, the knob can rotate without clicks and without changing the mode. This means the inner spring or rod is broken. In this case, adjustment is impossible - the thermostat must be replaced. Operation in this mode is dangerous: the compressor may either not turn on or work constantly.
Frequently asked questions (FAQ)
How can you tell that the temperature in the Pozis refrigerator is set correctly?
The most reliable way is to use an ordinary household thermometer. Place it in a glass of water on the middle shelf and leave for 2-3 hours. If the thermometer shows between +3 and +5°C, the setting is ideal. The condition of the products is also an indicator: milk does not sour for two days, vegetables do not wither or freeze.
Is it possible to leave the Pozis refrigerator in an unheated dacha in winter?
The manufacturer does not recommend operation at temperatures below +10°C. The oil in the compressor thickens, making starting and lubrication difficult, and the refrigerant may not circulate correctly. If it is necessary to store equipment in winter, it must be defrosted, washed, dried and stored with open doors at a temperature not lower than -5°C.
Why does the refrigerator take a long time to gain temperature after defrosting?
After complete defrosting, the walls of the chamber and the products themselves are at room temperature. It may take 4 to 8 hours for the refrigerator to reach operating mode. During this period, do not completely load the chamber with food and do not open the door unless necessary. If after 10-12 hours the cold does not appear, check the thermostat settings.
What does the temperature indicator blink on the display?
In models with electronic control, blinking usually indicates that the temperature in the chamber has risen above the permissible limit. This may happen immediately after switching on, after loading warm food, or when the door is not tightly closed. If the indicator blinks constantly when the door is closed and the compressor is running, the temperature sensor may be faulty.
Do you need to change the thermostat settings when switching to summer mode?
Yes, in the hot season, heat transfer worsens. It is recommended to check the settings: if at mark “3” the refrigerator stops working (the food is getting warmer), you can smoothly move the knob to “4”. However, make sure that ice does not actively begin to accumulate on the back wall - this is a signal that the power is already excessive for the current conditions.