The situation when a refrigerator Electrolux stops turning off and hums around the clock causes concern for any owner. This not only leads to a sharp increase in electricity bills, but also creates a risk of food spoilage due to possible overheating of the unit or, conversely, due to the lack of a full cooling cycle. Constant operation of the motor is a signal that the control system does not receive the correct signal that the set temperature inside the chambers has been reached.
In most cases, the problem lies not in a fatal breakdown, but in a violation of the tightness of the circuit or malfunction of the electronics. Modern models of the Swedish brand are equipped with a complex diagnostic system, but the basic principles of thermodynamics remain unchanged: if heat is lost faster than cold is produced, the compressor will wear out. It is important not to panic, but to consistently eliminate external factors before calling a technician.
The first thing to do is to assess the nature of the noise and check whether the unit really works without interruption. Sometimes users confuse the operation of an inverter compressor, which can operate in quiet mode for a long time, with a malfunction. However, if you notice that temperature in the chamber is below normal or ice has formed on the walls, immediate intervention is required.
Faults in the temperature sensor and thermostat
One of the most common reasons for continuous operation is failure of the thermostat or electronic temperature sensor. Older models Electrolux use a mechanical thermostat that physically opens the circuit when the evaporator cools. If its contacts are “stuck” or the bellows has lost its seal, the compressor will receive the “cool” command indefinitely.
In more modern units, such as the series NoFrost, electronic sensors are responsible for control. They may give erroneous readings if their contacts have oxidized or the wiring has broken. The control unit, receiving a signal that it is “heat” in the chamber, continues to circulate the refrigerant through the system, trying to achieve an unattainable ideal.
⚠️ Attention: An attempt to independently replace the thermostat without disconnecting the device from the network may lead to a short circuit. Always turn off the power to the equipment before starting any manipulations with electrical components.
The elimination method is often used to diagnose a mechanical thermostat. If, when the contacts are forced to open, the motor stops working, then the problem is in the regulator. In electronic models, you will need a multimeter to check the resistance of the sensor at different temperatures.
How to check a thermostat with a multimeter?
To check, remove the thermostat and place its sensitive part in cold water with ice. Ring the contacts: in the cold the circuit should be closed (resistance close to zero), and when heated it should be open (infinity). If the readings do not change, the part requires replacement.
Problems with tightness and door seal
The second most common reason is a violation of the thermal insulation of the internal volume. If warm air from the room constantly penetrates into the chamber, the refrigerator Electrolux simply does not have time to cool it to the set values. Most often, the culprit is rubber door seal, which dries out, cracks or deforms over time.
You can check the tightness by simple visual inspection and tactile method. Run your hand around the perimeter of the closed door: if you feel cold emanating, it means the seal is broken. It is also worth paying attention to the hinges: if the door is skewed and does not fit tightly, no cold will be kept inside.
- 🧊 Contamination of the surface of the seal with grease or crumbs prevents a tight fit.
- 🚪 Warping of the door due to loose hinges or overloading of shelves.
- 🕰️ Natural wear of rubber: it loses elasticity and ceases to restore its shape.
Sometimes the problem is solved by simple cleaning and lubrication with silicone, but in case of physical damage, a complete replacement of the circuit will be required. Ignoring this problem will result in the compressor working at its limit, which will shorten its service life significantly.
Clogged capillary tube and freon leak
If everything is in order with the electrical and tightness, it is worth considering more serious technical malfunctions associated with the refrigerant. Freon leak is an insidious problem, since the gas is odorless and colorless. When the amount of refrigerant in the system decreases, the pressure drops, and the compressor is forced to work longer to try to increase the temperature, but often it simply drives the void.
Another option is clogged capillary tube. In the refrigerant circulation system, this is the narrowest place where microscopic solder particles or oil oxidation products can get stuck. The circulation is disrupted, the cold does not enter the evaporator, the temperature sensor “screams” about a lack of cooling, and the motor does not turn off.
| Symptom | Freon leak | Clogged systems |
|---|---|---|
| Compressor operation | Constant or frequent cycles | Constant, often with overheating |
| Temperature in the chamber | Above normal (products spoil) | Can be normal or low |
| Evaporator | Partially covered with frost or clear | Covered with frost only at the entrance |
| Condenser (grid at the back) | Barely warm or cold | Hot, especially at the beginning |
Diagnosis of these problems requires professional equipment: a leak detector to find leaks and a pressure gauge station to check pressure. It is almost impossible to eliminate a blockage on your own or find a microcrack in a foamed housing.
Failures in the operation of the electronic control module
Modern refrigerators Electrolux are controlled by complex electronics. If the main one control module is faulty, it may send incorrect commands to the compressor start relay. This happens after power surges in the network or due to factory defects in the components of the board.
Sometimes the problem lies not in the board itself, but in the oxidation of the contacts of the cables going to the sensors or display. Humidity, which is inevitably present in the refrigerator compartment, takes its toll over time. Corrosion of the contacts leads to signal distortion, and the control unit goes into emergency mode of continuous operation.
Visually, traces of burning, swollen capacitors or blackened tracks may be visible on the board. However, often there are no external signs, and in-depth diagnostics with an oscilloscope are required. Repairing the module is possible, but it is often cheaper and more reliable to replace it entirely with an original analogue.
It is worth noting that some models have a self-diagnosis function. If an error code appears on the display (for example, a series of blinking lights), this will indicate a specific node. The decoding of the codes can be found in the instructions or service manual.
The influence of the external environment and improper operation
Before committing a breakdown, it is worth analyzing the operating conditions. A refrigerator is a heat pump that transfers heat from inside to outside. If (heat transfer) is hampered, efficiency decreases and operating time increases. Check that the unit is not standing too close to a wall or heating radiators.
Also critically room temperature. If the kitchen is +30°C or higher, and the refrigerator is installed near the stove, its compressor will work almost non-stop, and this is considered normal mode for such extreme conditions. The technical data sheet usually indicates the climate class, for example, SN (subnormal) or T (tropical).
- 🔥 Installation near heat sources (oven, radiator, direct sunlight).
- 🧱 No gap between the back wall and furniture (minimum 5-7 cm).
- 🍲 Loading hot products that require emergency cooling into the chamber.
Frequently opening the door or keeping it open for a long time also disrupts the temperature balance. In summer, high air humidity leads to more intense formation of condensation and ice, which also affects the operating cycle.
⚠️ Attention: Do not install the refrigerator in an unheated room in winter if its climate class does not require operation at low temperatures. The oil in the compressor will thicken, and starting will become impossible or lead to breakdown.
Wear of the compressor and start relay
The most expensive reason is wear of the very heart of the refrigerator, compressor. Over time, mechanical parts wear out, valves lose seal, and performance decreases. The motor hums, tries to build up pressure, but cannot, so it does not turn off.
The starting relay deserves special attention. If it is faulty, the compressor may hum but not start, or start and immediately stall. In some cases, the relay “sticks” in the on position, constantly supplying power to the windings. This is often accompanied by a characteristic click before operation begins.
Inverter compressors, which are now often installed in premium models Electrolux, work differently. They do not turn off completely, but only reduce the speed to a minimum to maintain the temperature. If you hear a smooth, quiet hum and the temperature is normal, perhaps your refrigerator is simply operating in normal inverter mode.
☑️ Diagnostics before calling a technician
Frequently asked questions (FAQ)
Why does the new Electrolux refrigerator work without interruption for the first day?
This is absolutely normal. When you first turn on the unit, it is necessary to cool the entire internal volume, plastic walls and loaded products to the set temperature. This process can take from 6 to 24 hours. After the temperature has stabilized, the compressor will start to turn off or go into economy mode.
Is it possible to operate the refrigerator if it does not turn off?
For a short time - yes, but do not delay diagnostics. Long-term operation without a break leads to overheating of the motor windings, drying out of the oil and eventual breakdown of the compressor. If the problem is not in the fast freezing mode, it is better to contact the service.
What does the flashing temperature indicator on the Electrolux panel mean?
A flashing indicator usually signals that the temperature in the chamber has risen above the permissible norm. This may be due to a door not being closed tightly, warm food being loaded, or a faulty cooling system. Check the tightness of the closure and the presence of products blocking the exit of cold air.
How long should the compressor operate normally?
Under normal conditions, the refrigerator operates approximately 30-40% of the time (operating time coefficient). That is, he can work for 15 minutes and rest for 30 minutes. In hot weather or when fully loaded, the operating cycle can increase to 60-70%, but a full day without stopping is a sign of a malfunction.