Refrigeration equipment brand Polair deservedly enjoys popularity in the Russian market due to its reliability and functionality. However, in order for the equipment to work correctly and ensure long-term storage of products, it is necessary to correctly set the temperature. Incorrect setting of parameters can lead to food spoilage or excessive energy consumption, which is especially critical for commercial use in shops and cafes. Owners are often faced with the question of how to set the temperature on a Polair refrigerator, since control interfaces may vary depending on the model and year of manufacture.
Modern units are equipped digital controllers, which allow high precision control of the microclimate inside the chambers. Unlike older mechanical models, where the temperature was set by an approximate turn of a knob, electronics require precise input of values. Understanding the principles of operation thermostat and knowledge of the main error codes will help you avoid calling a specialist to solve simple problems. In this article we will analyze in detail the setup process for various series of equipment.
Before starting any manipulations, it is important to make sure that the device is connected to the network and is in normal operation mode. If you have just defrosted the refrigerator or turned it on for the first time after transportation, the system may need time to stabilize the processes. The optimal temperature for storing most products in the refrigerator is from +2 to +5 degrees Celsius, while freezing requires a value of -18 degrees or lower. Let's look at how to achieve these indicators on your device.
Control features depending on the Polair series
The company Polair produces a wide range of equipment, from household models to professional cabinets and tables. The management interface directly depends on the installed electronic panel. In older or budget models, a mechanical thermostat may be used, where adjustment is carried out by turning a knob with numbers from 1 to 5 or 7. In such cases, a specific temperature value is not displayed, and the adjustment is made empirically with control by a thermometer.
Most modern commercial refrigerators and freezers are equipped with controllers Carel, Evco or Dixell. These devices have a digital display and control buttons. Setting algorithm it is standardized for them, but the key combinations for entering the menu may differ. Typically, the panel contains up/down arrow buttons, a Set button, and indicators for compressor or defrost operation.
It is important to distinguish between refrigerators and freezers, since their operating temperature ranges are significantly different. An attempt to set a positive temperature in the freezer or vice versa will lead to incorrect operation of the compressor. If you are not sure about the type of your equipment, refer to the technical documentation or the nameplate on the case, which indicates the model range.
Step-by-step instructions for setting up a digital controller
The process of changing temperature parameters on digital models requires sequential steps. Input errors may disrupt other settings, so be careful. The standard procedure is as follows:
- 🔹 Press and hold the button
Setfor 3-5 seconds until the display starts flashing the current temperature value or symbol SP (Set Point). - 🔹 Use the Up and Down arrow buttons to change the value to the desired value indicator.
- 🔹 To confirm the new value, press the button
Setagain or wait a few seconds until the device exits the editing mode automatically. - 🔹 Make sure that the display shows the current temperature and not the set one (sometimes they are displayed alternately or when you press a button).
In some controller models Evco or Carel to access the parameters, you may need to enter a password or switch to the “User” mode. If simply holding down the button Set doesn't work, try pressing a combination of buttons, such as "Down" and "Up" at the same time. After changing the settings, the refrigerator will start working according to a new algorithm, but the actual temperature inside the chamber will not change instantly, but within 30-60 minutes.
☑️ Check after setting
⚠️ Attention: Do not make frequent and sudden changes in temperature conditions. A sharp change in the target temperature by more than 5-7 degrees at a time can lead to increased load on the compressor and shorten its service life.
Deciphering error codes and indications
Electronic control systems Polair equipped with a function self-diagnosis. If the sensors malfunction or the system malfunctions, special codes appear on the display. Understanding their meaning will help you react quickly and prevent food spoilage. Most often, users encounter blinking indicators or the appearance of letter designations.
The most common situations are related to problems with the temperature sensor (E1, E2) or too high a temperature in the chamber (HA or flashing numbers). If you see an error code, first check the integrity of the sensor wires and its tight fit to the evaporator. Sometimes an error occurs due to condensation on the contacts.
Below is a table with the main fault codes for controllers often used in equipment Polair:
| Error code | Description of the problem | Recommended action |
|---|---|---|
E1 |
Temperature sensor malfunction (break) | Check the connection, replace the sensor |
E2 |
Sensor short circuit | Replace the temperature sensor |
HA |
High temperature in the chamber (alarm) | Check the tightness of the door closure, loading |
dEF |
The defrosting process is in progress | Wait for the end of the cycle (normal mode) |
What to do if the error code does not disappears?
If after rebooting the device (disconnecting from the network for 10-15 minutes) the error code continues to light, this indicates a hardware fault. In most cases, the NTC sensor needs to be replaced or the control board repaired. Do not try to open the board yourself if you do not have the appropriate qualifications, as this can lead to complete failure of the electronics.
Nuances of setting mechanical thermostats
In models with mechanical control, the adjustment process looks simpler, but takes more time to check the result. There is no digital display, and the temperature is set by the position of the thermostat knob. Typically the scale ranges from 1 (minimum cooling) to 5 or 7 (maximum cooling). It is important to understand that the numbers on the handle do not correspond to degrees Celsius.
To accurately set the temperature in such refrigerators Polair you must use an external thermometer placed in a glass of water in the center of the chamber. After each change in the position of the handle, you need to wait several hours to stabilize the temperature background. Only after this can conclusions be drawn about the need for further adjustment.
There is a direct relationship between the position of the handle and the temperature inside: the higher the number, the colder. However, setting the knob to maximum in a warm room can lead to continuous operation of the compressor and freezing of the evaporator. The optimal middle position for most household conditions is considered to be 2.5 – 3.5.
Factors influencing the accuracy of temperature maintenance
Even the correctly set temperature may not be maintained if there are external factors that interfere with the operation of the equipment. The efficiency of the refrigerator Polair depends not only on the controller settings, but also on the operating conditions. Ignoring these factors may create a false impression of equipment malfunction.
One of the main reasons for unstable temperatures is violation of loading rules. If food blocks the vents, cool air cannot circulate through the compartment. This leads to local overheating, and the sensor, being in a cold zone, does not give the command to turn on the compressor. As a result, some products may deteriorate.
The tightness of the door seal is also critically important. If the rubber is worn out or the door is skewed, warm air from the room constantly flows inside. The compressor works in enhanced mode, trying to compensate for heat inflows, but cannot withstand the set temperature. In winter, it is important to take into account the temperature in the room: if the room is colder than +10°C, the refrigerator may not turn on at all, since the thermostat does not see the need for cooling.
- 🔸 Frequency of door openings: In commercial display cases, a constant flow of warm air requires setting lower temperature values to compensate.
- 🔸 Equipment location: You cannot place the refrigerator close to the wall or in direct sunlight, this disrupts the heat exchange of the condenser.
- 🔸 Technical condition: A condenser clogged with dust or a lack of refrigerant reduces the cooling capacity regardless of the settings.
⚠️ Attention: If you notice that the refrigerator is running continuously, but the temperature does not drop to the set temperature, do not try to “intensify” the cooling by turning the regulator to the maximum. This will damage the compressor. Check the cleanliness of the radiators and the integrity of the seals.
Frequent errors during operation and their consequences
Users often make typical mistakes that negate all efforts to set things up correctly. One of the most common is loading warm products. Placing hot food in the chamber causes a sharp jump in temperature, which forces the system to work at its limit. This not only increases energy consumption, but also negatively affects the products already inside. Polair hot food causes a sharp rise in temperature, which forces the system to work at its limit. This not only increases energy consumption, but also negatively affects the food already inside.
Another mistake is completely filling the chamber to capacity. The refrigerator needs a volume of air to circulate. If the chamber is packed tightly, the cold is not distributed evenly. As a result, food may freeze near the back wall, and heat up above normal near the door. Proper operation implies the presence of free space between the products and the walls.
Do not forget about regular defrosting if the model is not equipped with a system No Frost. A thick layer of ice on the evaporator acts as a heat insulator, preventing heat from being removed from the chamber. In such conditions, even a correctly adjusted thermostat will not be able to provide the desired temperature, since the sensor will read readings through a layer of ice.
Questions and answers (FAQ)
Why the Polair refrigerator does not hold set temperature?
There may be several reasons: a malfunction of the temperature sensor, a refrigerant leak, compressor wear or a leak in the door seal. Also check if the condenser is clogged with dust and if the refrigerator is not located next to a heat source.
How to reset the controller settings to factory settings?
For most controllers Evco i Carel you need to enter the parameters menu (holding Set), find the reset parameter (often indicated as rSt or similar code) and set the value YES or 1. It is better to look for the exact combination in the instructions for the specific model.
Is it possible to transport a Polair refrigerator while lying down?
It is strictly not recommended to transport refrigeration equipment while lying down, especially on your back or stomach. This can lead to oil leakage into the refrigerant circulation system, causing water hammer and compressor failure when first turned on. If transportation in a horizontal position is unavoidable, turn on the device no earlier than 24 hours after installation in a vertical position.
What does a flashing light on the control panel mean?
A flashing indicator usually indicates an alarm condition. This could be a high temperature in the chamber (if the door has been open for a long time) or a system malfunction. If the defrost indicator is blinking, it is possible that the heating element of the heaters does not turn off or, conversely, does not turn on.