Modern refrigerator DEXP is a complex electronic device that requires precise calibration to ensure the safety of products. Correct temperature setting is a key factor influencing not only the shelf life of food, but also the energy consumption of the unit. Many owners are faced with a problem when the purchased device seems to work, but the food spoils faster than expected or, on the contrary, freezes.
In this article we will analyze in detail the setting algorithms for various models DEXP, be it a classic mechanical control system or an advanced electronic panel. Optimal temperature conditions varies depending on the load of the chambers and environmental conditions, so it is important to understand the principles of operation of the thermostat. Ignoring basic operating rules can lead to overload of the compressor.
We will look at the nuances of working with both single-compressor and dual-compressor systems, and also analyze typical user mistakes. Climate stability inside the chambers directly depends on the correctness of your initial actions after installation technology. Let's take a detailed look at the setup process to ensure your refrigerator operates at maximum efficiency.
Principles of operation of the DEXP cooling system
Brand refrigerators DEXP most often use a static cooling system or technology Total No Frost. In static models, cold air naturally falls down, creating a temperature gradient, while in No Frost systems the fan forcibly circulates the air masses. Understanding this difference is critical for the correct placement of products and setting the thermostat.
Electronic control in models DEXP with a display allows you to set the temperature with an accuracy of a degree, unlike mechanical knobs, where the settings are conditional. Temperature sensorslocated inside the chambers, constantly transmit data to the control module, which makes a decision on turning on the compressor. If the sensor is dirty or covered with food, the readings will be incorrect.
It is important to consider that after being plugged in or after defrosting, the equipment requires time to stabilize processes. First start can take up to 24 hours before the temperature reaches the set values. During this period, it is not recommended to load the chamber with products so as not to create an unnecessary heat load on the system.
Setting the temperature in mechanical models
In budget and mid-range models DEXP control is often carried out using a rotary regulator inside the refrigerator compartment. The scale may have numbers from 1 to 7 or from Min to Max, which often confuses users who do not know which number corresponds to a colder mode. Operation logic here it is simple: the higher the number, the lower the temperature (stronger cooling).
To set the optimal mode, you need to turn the knob to the position corresponding to the average value is usually 3 or 4. If you set the regulator to maximum (7 or Max), the compressor will work almost without interruption, trying to reach a minimum that is unattainable under normal conditions, which will lead to freezing of the back wall and excessive consumption of electricity.
Please note that the mechanical thermostat responds to the temperature of the evaporator, not the air in the chamber, so changes occur with a delay. Adjusting settings should be done smoothly, at intervals of several hours, so that the system has time to react. A sudden switch of the knob from minimum to maximum creates a stressful situation for the refrigerant and the compressor.
Control through an electronic display and sensor
Models DEXP with an external display on the door provide the user with complete control over the climate inside the chambers. To change settings, you often need to activate the control panel by pressing and holding the Lock or Unlock button for 3-5 seconds. Once unlocked, the indicators begin to flash, signaling that they are ready to enter new parameters.
Using the arrow buttons or symbols + and -, select the desired compartment (usually indicated by a snowflake for the freezer or a drop for the refrigerator compartment) and set the value. Digital display allows you to see the real temperature inside, although it is worth remembering that the sensor may have a slight error. The optimal value for the refrigerator compartment is considered to be from +3°C to +5°C.
⚠️ Attention: In some DEXP models, when the door is open, the display may go dark or be blocked to save energy. If the panel does not respond, make sure that the door is closed tightly and several seconds have passed after closing.
The function Super Freeze (Super Freeze) or Super Cooldeserves special attention. These modes force the compressor to run continuously for a certain amount of time to quickly freeze large quantities of food or quickly chill drinks. After completing the task, the mode often turns off automatically, but in some models it must be turned off manually so as not to “clog” the refrigerator.
Optimal temperature conditions for different products
There is no single “ideal” temperature for all products at once, so the correct zoning of shelves in the refrigerator DEXP plays a decisive role. On the upper shelves, where the temperature is slightly higher, it is better to store ready-made dishes, dairy products and sausages. Lower shelves and the freshness zone (if there is one) are intended for raw meat, fish and vegetables that require lower temperatures.
In the freezer, it is recommended to maintain the temperature no higher -18°C for long-term storage. In this mode, bacteria do not multiply, and the products retain their properties for up to 12 months. If you plan to store food for less than a month, you can set the value to -12°C or -14°C, which will save energy.
| Product type | Recommended zone | Optimal temperature | Shelf life (approximate) |
|---|---|---|---|
| Fresh meat/fish | Lower shelf / Freshness zone | 0°C ... +2°C | 1-3 days |
| Dairy products | Middle shelves | +2°C ... +4°C | 3-7 days |
| Ready meals | Top shelves | +4°C ... +6°C | 2-4 days |
| Vegetables and fruits | Drawers below | +5°C ... +8°C | 1-2 weeks |
Why can’t you store milk on the door?
The door is the warmest place in the refrigerator due to constant contact with the warm air of the room when opening. The milk there will quickly sour, even if the main chamber is perfectly cold.
Remember that dense loading of the chambers disrupts air circulation, especially in models DEXP with the No Frost system. Air gaps between products are required for the correct operation of the system. If the shelves are filled to capacity, the temperature sensor may show normal, while in the depths of the chamber the products will begin to deteriorate.
Interpretation of indicators and alarms
Modern refrigerators DEXP equipped with a diagnostic system that reports temperature problems through light or sound signals. A flashing temperature indicator or exclamation mark on the display usually means that the current temperature in the chamber is higher than the set temperature. This can happen immediately after switching on, loading warm food, or during a malfunction.
If the sound signal does not stop after the chamber has cooled down, check the tightness of the doors. Door open sensor triggered if the shutter does not fit tightly to the body. Also, the cause may be damage to the sealing rubber through which cold air escapes, causing the compressor to run idle.
☑️ Diagnosis of a flashing temperature indicator
In some models, flashing of the indicator Alarm may indicate defrosting or a malfunction of the electronics. If your refrigerator was working fine and then suddenly stopped freezing and the alarm came on, there may be a power surge or a freon leak. In such cases, setting the temperature yourself will not help - you will need to call a specialist.
Typical mistakes and their consequences
One of the most common mistakes is setting the minimum temperature immediately after purchase or defrosting. Users want to cool the chamber faster, but sharp start at maximum speed it can lead to water hammer in the compressor or freezing of the evaporator, which in models with a drip system will cause a “crying” back wall and puddles below.
Another mistake is ignoring seasonal changes. In the summer, when the apartment is hot, the refrigerator DEXP requires more intensive work. If you notice that food is thawing, it makes sense to increase the cooling a little. In winter, on the contrary, in unheated rooms or at low temperatures in the kitchen, the load can be reduced.
⚠️ Attention: Do not install the DEXP refrigerator next to a radiator or in direct sunlight. This disrupts heat transfer, and no temperature adjustment will help compensate for external heating of the case.
Frequent opening of the door also makes its own adjustments. Every time you open the refrigerator, warm, moist air gets in. Moisture condensation leads to the formation of ice, which acts as a heat insulator, interfering with cooling. Try to minimize the time when the door is open, especially in the summer.
Frequently asked questions (FAQ)
Why does ice form on the back wall in the DEXP refrigerator?
In models with a drip system (Static), ice formation on the back wall is a normal operating process. Water flows down the groove into the drainage hole. If there is too much ice and it does not have time to melt, check whether you have set the temperature too low and make sure that the food is not touching the back wall.
What temperature should you set in the DEXP freezer for storing meat?
For long-term storage of meat (more than 3-4 days), it is recommended to set the temperature to -18°C or lower. For short-term storage (up to a week), -12°C...-14°C is sufficient. Super Freeze mode (-24°C) should only be used to quickly freeze fresh food, and then return to standard settings.
What should you do if the DEXP display shows error E1 or E2?
Error codes E1, E2 and others indicate a malfunction of the temperature sensors or defrost system. It is impossible to fix this by changing the settings yourself. It is necessary to unplug the refrigerator for 15-20 minutes to reboot the system. If the error recurs, diagnostics are required at a service center.
Is it possible to transport the DEXP refrigerator lying down?
Transportation lying down is not recommended, since oil from the compressor may leak into the refrigerant circuit. If transportation in a horizontal position is unavoidable, after installing it vertically, it is necessary to allow the equipment to stand for at least 12-24 hours before turning it on, so that the oil flows back into the compressor.
Why does the DEXP refrigerator operate loudly after setting the temperature?
Increased noise immediately after changing the settings or turning on the super-freezing mode is normal - the compressor is operating at maximum power. Refrigerant flowing through the pipes can also make noise (gurgling). If the noise is accompanied by vibration, check whether the refrigerator is level and does not touch the cabinet walls.