A modern LG refrigerator is complex an engineering device that, unlike old Soviet models, does not operate continuously. Its main task is to maintain a set temperature inside the chambers, and not to constantly produce cold. Understanding exactly how a compressor functions helps owners spot faults in time and avoid food spoilage. If you hear that your unit turns on and off too often or, conversely, hums continuously, this is the first signal to check.
During normal operation, the device goes through cooling and resting cycles. The duration of these stages depends on many factors: from the temperature in the room to the number of products on the shelves. LG equipment is characterized by certain time frames, exceeding which may indicate problems with the thermostat, a freon leak, or a malfunction of the inverter motor. Let's figure out what is considered normal and when it's time to sound the alarm.
Standard performance indicators of a compressor
The standard operating cycle of a household refrigerator, including popular models LG DoorCooling+ or LG InstaViewusually follows certain time intervals. Under ideal conditions, the compressor should run for about 15 to 20 minutes, followed by a rest period of 30 to 40 minutes. However, these figures are not an absolute constant and may vary.
If you notice that the work time significantly exceeds the rest time, it is worth analyzing the operating conditions. Working time coefficient is the ratio of the work time to the total cycle time. For most modern models it is approximately 0.3–0.4. This means that the unit spends less than half the time in an active state.
It is important to consider that immediately after turning on the network or after loading a large volume of warm products, the cycle may be violated. During this period compressor it can work almost non-stop until it reaches the specified parameters. This is a normal situation that should not cause panic if after a few hours the mode stabilizes.
Factors influencing the duration of cycles
A whole range of variables influences how long your refrigerator works and rests. You cannot demand the same behavior from equipment in winter and summer, when the temperature in the kitchen changes dramatically. The location of the unit also matters: if it is located near a battery or in direct sun, the operating time will inevitably increase.
- 🌡️ Ambient temperature: The hotter the room, the longer the motor must run to remove the heat.
- 🍖 Loading chambers: An empty refrigerator cools down faster, but holds the cold worse, while a fully loaded one requires more time to initially cooling.
- ❄️ Super freezing mode: Function
Super FreezeorExpress Freezeforces the compressor to work continuously for up to 12–24 hours.
Particular attention should be paid to the tightness of the seals. If the rubber band on the door LG does not fit tightly, warm air constantly penetrates inside. Sensors detect an increase in temperature and give a command to start the engine. As a result, rest cycles become short or disappear altogether.
Another critical factor is the availability inverter compressor. In LG models with technology Linear Inverter the motor does not turn off completely, but only slows down. Therefore, the concept of “rest” is transformed here: the device goes into an economical mode, continuing to hum quietly at minimum power.
Specifics of operation of LG inverter models
Technology Linear Cooling and use inverter motors radically change the idea of operating cycles. In such refrigerators, for example, series LG GC-B or LG GA, the compressor may not stop at all. It smoothly regulates its power, maintaining the temperature with minimal deviations.
This differs from traditional models, where the motor operates jerkily: it turns on at full power, then turns off. The inverter works constantly, but with different intensity. Therefore, if your new LG refrigerator operates 24 hours a day, but consumes little electricity and does not make noise, this is normal operation for inverter systems. Attention: In inverter models, the absence of obvious pauses in operation is not a breakdown. Trying to find a “moment of silence” for diagnosis can lead to erroneous conclusions. normal operation for inverter systems.
⚠️ Attention: In inverter models, the absence of obvious pauses in operation is not a breakdown. Trying to find a “moment of silence” for diagnosis can lead to erroneous conclusions.
The advantage of this approach is the uniform distribution of cold and the absence of temperature changes, which is especially important for storing vegetables and fruits. However, if there is a sudden surge in voltage or overheating, the protection system can stop the motor, which will look like a long rest or a complete failure.
Signs of malfunction and abnormal behavior
Despite the adaptability of modern systems, there are clear boundaries, the crossing of which indicates a breakdown. If your LG refrigerator turns on every 2-3 minutes and runs for the same amount of time, this phenomenon is called "short cycling". It is extremely harmful to the equipment.
On the other hand, if the unit works for days without a break (and this is not a super-freezing mode), and the temperature inside does not drop, it means that the tightness of the circuit is broken or the thermostat has failed. The table below shows the main symptoms and their probable causes.
| Symptom | Probable cause | Required actions |
|---|---|---|
| Works for 5 minutes, rests for 5 minutes | Thermostat malfunction or start relay | Replacing the temperature sensor |
| Humming constantly, not cooling | Freon leak or clogged capillary | Call a technician to find a leak |
| Frequent starts (every 10 minutes) | Increased load or poor ventilation | Check the gap at the wall and the load |
| Clicks and does not start | The compressor start relay is burnt out | Replacing the relay |
A common mistake made by users is to ignore the condition of the capacitor. If the radiator on the back or sides of the case is covered with a thick layer of dust, heat transfer will deteriorate. The compressor is forced to work longer to compensate for ineffective cooling.
☑️ Diagnostics of the operating mode
The influence of external temperature and placement
Many owners forget that the refrigerator is a heat pump that transfers heat from the inside to the outside. If it stands in a niche where the air temperature exceeds 30°C, its performance decreases. In such conditions, the operating time can increase by one and a half to two times.
In winter, the situation may be the opposite. If the refrigerator LG stands on an unheated balcony, the oil in the compressor thickens and the refrigerant does not circulate properly. This can lead to the unit turning on rarely, but with great effort, or not starting at all.
For normal operation, it is necessary to provide a gap of at least 5–7 cm between the back wall of the refrigerator and the wall. This will ensure natural air convection. Violation of this rule leads to overheating of the compressor and a reduction in its rest time.
⚠️ Attention: Installing a refrigerator next to a heat source (stove, radiator) can reduce the life of the compressor by 40-50% due to constant overheating.
It is also worth considering the humidity in the room. In very humid rooms, ice may form on the evaporator walls faster, requiring more frequent defrost cycles (on models with No Frost), during which the compressor can also operate.
Defrosting modes and their impact on the schedule
Systems No Frost, which are equipped with most modern LG refrigerators, have a built-in defrost timer. It usually operates every 8–12 hours of compressor operation. During this period, the heating element melts the ice on the evaporator.
During the defrost cycle, the compressor must rest. If you see that the motor continues to hum when the defrosting process should be in progress, the defrost timer may be faulty or the relay is stuck. This leads to fouling of the evaporator with ice and loss of cooling capacity.
What is a drip defrosting system?
In models with a drip system (not Full No Frost), defrosting occurs automatically when the compressor is stopped. Water flows down the back wall into a groove. Here, the work and rest cycles directly depend on the accumulation of condensate. data-i="134">If you suspect that the operating schedule of your refrigerator is broken, start with a simple diagnosis. Turn off the super freeze function, if it is active. Check if the doors close tightly and if there are any distortions.
The duration of the defrost cycle is usually 15–20 minutes. After its completion, the compressor starts again to raise the temperature. If this stage is delayed or occurs too often, this is a signal of problems with the defrost sensor or heating element.
Diagnostics and troubleshooting methods
If you suspect your refrigerator's operating schedule is off, start with a simple diagnostic. Disable the Super Freeze function if it is active. Check that the doors close tightly and that they are not distorted.
Try unloading the refrigerator halfway and leaving it to work in an empty room with normal temperature. If the cycles return to normal, the problem was overload or hot. kitchen microclimate. If the nature of the work has not changed, specialist intervention is required.
Independent replacement of the thermostat or start relay is possible only if you have the skills to work with electrical appliances. In other cases, it is better not to take risks, since incorrect installation of components can lead to the burning of an expensive inverter compressor.
Prevention to extend the life. services
In order for the LG refrigerator to serve for a long time and work in optimal conditions, it is enough to follow simple rules. Regularly, at least once every six months, wash the condenser at the back of the device from dust. This will improve heat transfer and reduce the load on the motor.
Do not put hot foods in the chamber. This not only violates sanitary standards, but also causes the compressor to work harder, trying to compensate for the sharp increase. temperature. Let the products cool to room temperature before storing.
Monitor the condition of the sealing rubber bands. Wipe them with a soft cloth and check the fit. If the rubber band becomes stiff or torn, replace it immediately, as this directly affects the frequency of switching on.
FAQ: Frequently asked questions
Is it normal if an LG refrigerator hums almost constantly?
Yes, if you have a model with an inverter compressor. Such motors do not turn off completely, but operate at low speeds to maintain the temperature. If an old unit with a conventional motor hums, this is a sign of a malfunction.
Why does the refrigerator turn on every 5 minutes? minutes?
This phenomenon is called a "short cycle". Most often, the cause is a faulty thermostat that does not read the temperature correctly, or problems with the start relay. Diagnostics is required.
How long should the refrigerator rest after defrosting?
After complete defrosting and washing, the refrigerator should stand. turned off for at least 2-4 hours (preferably a day) so that the refrigerant is distributed and the oil flows into the compressor. After turning on, it can work for a long time without stopping until it cools the chambers.
Does the amount of food affect the operating time?
Yes, it does. A large volume of food acts as a thermal accumulator. The refrigerator takes longer to gain temperature when first loading. holds the cold longer and turns on less often in the future. An empty refrigerator turns on more often.