Seven Reasons Why your LG Refrigerator Not Cooling

Figure 1: A double-door refrigerator filled with various foods.

As times go by and society is developing, refrigerators make people’s life more convenient, which can keep meat and vegetables fresh for families. As we know, there are a lot of kinds of them, such as double-door, multi-door, and other types.

For instance, the LG double door refrigerator with a bright appearance and strong performance is outstanding among similar refrigerator products. However, many people are troubled with dealing with failures in their use. In fact, for household appliances, it's also useful to know something about emergencies.

So, let’s start to look at the reasons and solutions for the cooling failure.

Power Supply Disconnection

When the refrigerator is not cooling, you should first check whether the connection of the power supply is normal and if the light inside the refrigerator is normal. Besides, you can further use an electric pen for testing. If the power supply and the lamp are both normal, but the fridge cannot be started, you should call the after-sales for help. Of course, if the refrigerator has a compensation switch, you should see if it is turned on when the ambient temperature is below 16 ℃.

Compressor Fault

First, you could hear if the compressor is working properly. The compressor would make a small vibration sound when working normally. In case that the high-pressure output buffer pipe in the compressor is broken, or the screw that is used to fix the pipe is loose, the high-pressure pipe will not exhaust, and the low-pressure pipe will not suction. It’s the reason why the compressor is running, but not for refrigeration.

In addition, the lack of oil in the internal parts of the compressor will be one of the causes, which will make a large noise when the compressor starts. In this case, the compressor can be filled with the lubricating oil for 30- 50 ml. And if the compressor is out of service for a long time but stored improperly, the internal parts will rust due to dampness, and it will be difficult to start the compressor.

Figure 2: LG Compressor BMA082HAMV

Refrigerant Leakage

Check the refrigerant in the fridge. The method is to run the refrigerator for 3-5 minutes and then cut off the power supply. You can hear the sound of water running. If it is silent, it means that the refrigerant has been used up or leaked fully. Under this circumstance, the compressor still runs, but the fridge cannot cool due to a lack of refrigerant for evaporation and heat absorption in the refrigeration system.

Capillary Clogging

The capillary blockage will lead to the refrigerant failing to enter the evaporator to absorb heat and play its role, causing the temperature of the refrigerator to remain high.

Figure 3: The capillary of the refrigerator is clogged.

Refrigerator Fan not Work

The refrigeration process varies by type of refrigerator. If it’s a frost-free system with cooling failure, you can check whether the fan is running normally. The refrigerator has the freezer on the top and the refrigerator on the bottom. Open the freezer door, hold the button at the edge of the box which controls indoor lighting when the door is opened and stops the fan. Then you should check if the fan is working.

Freezer Failure

A direct cooling refrigerator adopts the double circuit. After checking its normal working current, the maintenance worker found the temperature of the condenser was lower than normal. And he opened the freezer to check. It proved that the evaporator was not frosting, and the second capillary felt cool, but there was no refrigerant flowing sound. It could be the second capillary blockage.

Figure 4: The freezer of a fridge.

To judge whether it was ice clogging or dirty blocking, the worker covered the second capillary tube with a hot towel, and there was no change after half an hour, so it was judged to be dirty blocking. Disconnect the welding between the secondary capillary tube and the solenoid valve, and it was found that there was gas exhausted from the side of the solenoid valve, but no gas from the capillary side.

At this time, the maintenance worker sealed the solenoid valve side outlet, disconnected the compressor process tube, then welded it in the repaired valve, and then filled in 0.6Mpa of nitrogen to blow off the capillary, but it was invalid. And then he pressurized it to 0.8Mpa, the gas suddenly ejected, which meant that the dirty blocking had been solved.

Other Causes

Figure 5: A LG double door refrigerator.

There is a situation where the compressor starts again less than 3 minutes after stopping, and the high and low pressures in the cooling system have not yet reached equilibrium. Given this case, note that the door should be opened as little as possible after the compressor is stopped, and the time should be shortened. At the same time, it is not advisable to put much food in the refrigerator, and put items with higher temperatures. Ensure that the time for the temperature in the box to rise to the start-up temperature of the compressor is longer than 3 minutes, and it will not affect the next start-up.

If the refrigerator is not cooling, the food, meat, and fruits stored in it will quickly become moldy, especially in summer. Under normal circumstances, when household appliances have been used for a long time, some problems will inevitably occur. In case of encountering failures of using the fridge, you should first check the external problem, that is, the power supply.

Hope this article will help you to deal with the faults of your LG refrigerator.

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