Correct temperature conditions are the foundation for long-term preservation of products and safe operation of household appliances. For owners of Italian brand equipment Ariston knowledge of the exact operating parameters of the compressor and evaporator becomes the key to saving energy and preventing inventory damage. Many users wonder what numbers should appear on the display or where the mechanical thermostat control should be located for the system to operate normally.
Modern models, such as the series Ariston MB or older versions with the system No Frostmay have different adjustment ranges, depending on the year of manufacture and the type of refrigerant. The standard values laid down by engineers during design usually correspond to generally accepted sanitary standards, but external factors often make their own adjustments. Understanding the physics of the cooling process will help you avoid common mistakes during operation.
In this article we will analyze in detail what temperature should be in different zones of the refrigerator and freezer compartments, how to correctly set the thermostat and what to do if the actual values differ from the nominal ones. Fine tuning extends the life of the compressor and ensures that your products remain fresh for as long as possible.
Standard temperature standards for the refrigerator compartment
The main compartment of the refrigerator Ariston is designed for storing foods that do not require freezing, but need refrigeration to slow down bacterial growth. According to international standards and technical data sheets of most models, the optimal range for the main camera is considered to be from +2 to +5 degrees Celsius. It is within these limits that most bacteria lose the ability to actively reproduce, which preserves the freshness of meat, dairy products and ready-made dishes.
However, inside the chamber the temperature is distributed unevenly due to the laws of physics and the design of the evaporator. Cold air Heavier than warm, so it sinks down, creating a temperature gradient. On the top shelf, closer to the light source or door, the readings can reach +6...+7 degrees, while at the back wall and on the lower shelves the temperature drops to minimum values. This is critically important to consider when placing food.
⚠️ Attention: Do not place perishable foods (meat, fish, open dairy products) on door shelves or near the entrance to the chamber. There, the temperature is highest and unstable due to frequent opening of the door, which can lead to rapid deterioration of the contents.
For models with electronic control, for example, some versions Ariston MBA, you can see the current readings on the digital display. If you observe constant jumps beyond +7 degrees with the door closed, this is a signal of a faulty seal or a freon leak. In mechanical models, control is carried out only indirectly, based on the condition of the products and the operation of the compressor.
Operating modes of the freezer compartment
The freezer compartment in refrigerators Ariston, whether it is a separate drawer at the bottom or the upper chamber, should provide deep freezing. The standard temperature for long-term storage is -18 degrees Celsius and below. In this mode, bacteria completely stop their vital activity, and products can be stored for months without loss of taste and structure.
Many modern models are equipped with a function quick freezing (Super Freeze), which temporarily lowers the temperature to -24 degrees. This allows you to quickly freeze fresh food, preserving microscopic ice crystals in their cells, which do not destroy the tissue structure during defrosting. After the cycle is completed (usually 24 hours), the refrigerator automatically returns to the standard -18°C mode.
If you notice that the temperature in the freezer is above -12...-14 degrees, the ice begins to melt, and the food becomes covered with a “fur coat” or an ice crust. This may indicate that the thermostat is set to the minimum cooling position, or the system No Frost is not working correctly. For mechanical regulators, the middle position of the scale is considered optimal, usually indicated by the number 3 or 4 out of 5 possible.
Setting the thermostat: mechanics and electronics
The temperature adjustment process directly depends on the type of control of your model Ariston. In older and budget series, a mechanical thermostat is used, presented in the form of a rotary knob with numbers from 1 to 5 (or Min/Max). It is important to understand here: the number does not mean degrees, it denotes work intensity the compressor. Position “1” is minimum cooling, “5” is maximum.
For electronic models, control is carried out through a panel with buttons and a display. Here you set the exact target temperature. The system itself will decide how long the compressor must run to achieve the set parameters. This is a more energy-efficient and accurate control method that eliminates the human factor and errors in scale interpretation.
During initial setup or after defrosting, it is recommended to set average values. If the room is hot (above +25°C), it makes sense to increase the cooling by moving the control towards higher numbers or lowering the degrees on the display. However, constant operation at maximum leads to accelerated wear of the motor and the formation of excessive ice on the evaporator.
☑️ Checking the correct settings
Factors influencing the temperature regime
Even perfectly configured refrigerator Ariston may show deviations from the norm under the influence of external factors. One of the main enemies of stable cold is heat gain from the environment. If the equipment is installed next to a stove, a heating radiator, or in direct sunlight, the system has to work almost without interruption to compensate for the incoming heat.
Load density also plays a role. An empty refrigerator cools down faster, but it also loses cold faster when the door is opened. A unit that is completely clogged with a chamber has poorer air circulation, which can lead to local overheating in some areas and freezing in others. The optimal load is about 60-70% of the total volume, with mandatory gaps between products for air flow.
⚠️ Attention: Never put hot or even just warm foods in the refrigerator. This causes a sharp jump in temperature and humidity, which leads to freezing of the evaporator and increased load on the compressor, reducing its service life.
The technical condition also makes its own adjustments. The abrasion of the rubber seal on the door allows warm, moist air to pass through, which condenses and freezes. Dust-clogged ventilation holes on the rear wall (condenser) impair heat transfer, which is why the internal temperature may not drop to the desired values even with maximum motor operation.
Distribution of cold across storage zones
Knowledge of the temperature map inside the refrigerator Ariston allows for efficient use of space. As mentioned, zones have different temperatures and food placement must match their storage requirements. Ignoring this rule is a common reason why milk turns sour in a day and vegetables freeze.
Let's consider the detailed distribution of temperature zones in a standard chamber:
| Storage area | Approximate temperature | What to store |
|---|---|---|
| Top shelf | +5...+7°C | Ready meals, drinks, canned food |
| Middle shelves | +3...+5°C | Sausages, cheeses, eggs, bread |
| Bottom shelf (above the drawers) | +2...+3°C | Raw meat, fish, open dairy products |
| Door shelves | +5...+8°C | Sauces, medicines, drinks, oil |
| Zero zone (Bio Fresh) | 0...+1°C | Fresh meat, fish, herbs (if available) |
This deserves special attention called zero zone, which may be present in advanced models Ariston. This compartment is kept at a temperature close to zero and the humidity is frequently adjusted. This is an ideal place to store fresh meat and fish if you plan to cook them within 1-2 days, since under such conditions bacteria practically do not multiply, but the product does not freeze.
Why do vegetables freeze in drawers?
Vegetables freeze if they lie too close to the back wall where the cold air outlet is located, or if the thermostat is set to maximum. Also, the cause may be a clogged drainage hole, due to which the moisture does not leave, but freezes, creating an ice bridge to the products.
Diagnostics of temperature problems
If you notice that the products are deteriorating faster than usual, an unpleasant odor appears in the chamber or ice forms on the walls, it is necessary to carry out diagnostics. The first step should always be to check the tightness of the door. Take a sheet of paper, clamp it with the door and try to pull it out. If the sheet comes out too easily or, conversely, breaks out with difficulty around the entire perimeter unevenly, the seal requires replacement or adjustment.
Next, you should evaluate the operation of the compressor. Normally, it turns on, works for a certain time (cools), then turns off (rest). If the engine hums continuously without turning off for hours, and the temperature does not drop below +10 degrees, this may indicate a refrigerant leak or a thermostat malfunction. In systems No Frost a frequent problem is the breakdown of the defrost heating element or timer, due to which the evaporator becomes overgrown with ice and stops letting cold into the chamber.
For accurate diagnosis, it is recommended to use an external thermometer placed in a glass of water on the middle shelf for 6-8 hours. The readings from the built-in sensors (if any) may have errors. If the external thermometer shows a significant deviation from the established norm after all checks, a call to the technician is required.
Frequently asked questions (FAQ)
Why in Ice freezes in the Ariston refrigerator, although the No Frost mode is set?
The system No Frost prevents the formation of ice only if all components are working properly. Ice appears if the drainage hole for condensate removal is clogged, the defrost heating element is faulty, the defrost sensor is burned out, or the door does not close tightly, letting in moist air. Also, the cause may be a breakdown of the fan, which does not accelerate the cold air.
Which position of the regulator should you choose in the summer: higher or lower?
In the summer, when the ambient temperature in the room is high, it is more difficult for the refrigerator to give off heat. It is recommended to set the regulator closer to maximum cooling (a large number or temperature on the display), but make sure that the compressor does not run continuously. If the motor does not turn off, it means that the system power is not enough for such conditions, and the load must be reduced by returning the settings to medium, otherwise overheating is possible.
Is it possible to transport the Ariston refrigerator while lying down?
Transporting it while lying down is extremely undesirable. Oil from the compressor may leak into the refrigerant circuit, resulting in water hammer on first start-up or clogging of the capillary tube. If transportation lying down cannot be avoided, the refrigerator should lie strictly on the back wall (if permitted by the instructions for a specific model) or on its side, but it can be turned on no earlier than 12-24 hours after installation in a vertical position.
Why is the back wall of the refrigerator compartment covered with ice or water?
In drip systems (“crying” evaporator) this normal operating process: moisture condenses, freezes, then thaws during the compressor rest cycle and flows into the drain. If there is too much ice or water does not drain out, check whether the food is pressed tightly against the back wall and clean the drainage hole in the bottom of the chamber.