In detail: DIY refrigerator repair from a real master for the site my.housecope.com.
Despite the fact that modern refrigerators are quite reliable and capable of serving for several decades, they also periodically fail. It is worth solving problems with household appliances right away. Some problems can be dealt with on their own, while others require specialist intervention.
Typical problems that you can deal with on your own include:
the appearance of extraneous sounds and rattling;
insufficient or strong cooling of food;
But the serious problems that require the intervention of professionals include:
current piercing through the casing;
turning off the device immediately after turning it on;
the formation of a snow cap on the back wall;
stopping the operation of the motor - compressor;
lack of cooling.
Most often, no matter how trite it may seem, the rattling of the unit is caused by an incorrectly adjusted suspension of the compressor casing. To solve the problem, it is enough to lower the suspension bolts with springs to the required level.
Also, equipment rattling can be caused by contact of the product body with pipelines. This is solved by detecting problem areas and moving the tubes. Relays can also cause jitter. To fix the problem, it is worth making sure that it is located correctly and according to the special labels.
If the refrigeration equipment begins to freeze strongly or weakly, you will need to check several indicators at once:
Sometimes consumers are faced with the problem that refrigeration equipment is electrocuted. This can happen both during his work and in a calm state.
Video (click to play).
Attention: using a device that shocks is dangerous to life. Unplug it immediately and either fix the problem yourself or call the wizard.
To fix the problem yourself, you will need a special device - a megohmmeter, with which the insulation resistance of the refrigerator wiring is measured. The workflow will look like this:
Disconnect the unit from the mains and check the wires for visible defects.
If you haven't noticed any flaws on the wires, you will need one more device - "Ground". Its wire is connected to the body of the refrigerator, and the second wire - "Line", to the wire of the refrigerator. The “Line” wire is alternately connected to the thermostat, relay and compressor wires, and excessive resistance will be displayed on the screen.
After the location of the malfunction is calculated, the damaged wire will need to be replaced with a new one or carefully insulated.
The refrigerator can start to work continuously if the room temperature rises constantly or the thermostat knob is incorrectly set. Under these conditions, the equipment will operate at full capacity. If the thermostat is set correctly, and the unit operates at full power without interruption, it means that it simply failed and must be replaced. Also, a problem in the constant operation of the compressor motor may be a refrigerant leak. This can only be determined using a special device. It is impossible to repair the equipment on your own without the skill and necessary consumables. It is worth contacting the workshop here.
The thermal relay is often triggered for various reasons:
increased voltage in the electric motor circuit;
the relay is loose;
relay contacts oxidized;
there are faults in the starting relay;
the compressor is seized.
Important: most often the thermal relay often trips due to an increased voltage in the motor circuit. If the problem is not eliminated in time, its winding will burn out.
You can try to fix the breakdown by checking the voltage in the electric motor network. If stable, check the relay. For this, the motor is connected directly without a relay. If, after the performed manipulations, the equipment starts to work properly, you will need to replace the relay.
Sometimes in two-compartment refrigerators, excess moisture appears on the walls in the form of drops of water or a snow coat. This can happen due to long open doors, or if the seal has lost its elasticity. It can also be provoked by the fact that hot food is placed in the unit. Correcting this situation begins with checking all the settings in the cooling system.
Quite often, in modern models, a fur coat on the walls appears when the internal lighting is turned off. It is impossible to see if the backlight is on after the door is closed. To check if the light is on or not, place a thin object between the equipment wall and the seal and close the door. Through the resulting gap, you can determine whether the light is on or not. If it does not light up, then repair the lighting system or replace the button - the switch that comes out of the wall towards the door.
If, after connecting the unit to the network, it does not make any sounds, then the refrigerator does not work completely. This is most often due to the lack of current in the power supply network or to the failure of the refrigerator cord. If there is current, simply replace the cord or plug.
If the refrigeration equipment works, but with a short cycle, this can provoke:
high pressure;
the presence of air in the system;
excess freon;
relay actuation;
dirty fan;
failure of the fan.
For troubleshooting, you need to check if the fan is connected correctly. If there is a small amount of air in the system or there is an excess of freon, they will need to be vented through the valve. Remember to check the condenser for dust contamination. Frequent activation of the low pressure switch leads to clogging of the filter or damage to the expansion valve. In this case, you just need to clean the filter or replace it with a new one, check the relay settings.
Moisture can collect on the bottom of the refrigerator due to the tube misalignment or clogging. You can cope with a breakdown quite quickly if you clean the pipe that leads water to a special receiver using a long and flexible wire. The wire is inserted into the tube and moves along the hole to the bottom of the unit. After a few minutes of the working process, all the debris will go into the water receiver.
Caution: To completely clean the tube, it is best to douche it several times.
An unpleasant smell appears in the refrigerator from improper use. To do this, it is not recommended to place products with a pungent odor in it without special containers, wipe the walls of the device in time and monitor its cleanliness.
If, however, an unpleasant odor still appears in the device, you must quickly get rid of it. Since this will have a bad effect on all the products that are stored in it. This process can take several hours of your free time:
Disconnect the unit from the network and leave it for a while. If ice has formed on the walls, it is not recommended to remove it by force. Since we can cause mechanical damage to equipment.
After the equipment is completely defrosted, we wipe its walls with special means. Powder abrasive mixtures should not be chosen. Better opt for helium pastes.
Wipe the refrigerator dry with a clean cloth, ventilate it for 5-10 hours.
We plug the unit into an outlet and continue to operate it.
In some models of refrigerators, light bulbs in the backlight often burn out.Replacing them should not be difficult. It is enough just to unscrew the bolt holding the plafond, remove it and unscrew the burned out light bulb. In its place, a new lamp is screwed in, the power of which should not exceed 15 W., and fix the shade in place.
Before proceeding with the repair of refrigeration equipment, it is necessary to diagnose it in order to understand whether it is possible to cope with the breakdown on its own or it is worth resorting to the help of specialists.
To diagnose equipment at home, you will need to prepare a universal tester and a screwdriver. Diagnostics begins with determining the quality of the voltage in the network. If it is 220 W, then everything is normal. If the voltage is less than this indicator, this can become the main reason for the failure of the household appliance.
Next, we carefully examine the cord and plug of the unit for integrity. It should not have defects, it should not heat up during operation.
Next, we inspect the terminals on the compressor. It is better to do this with the equipment disconnected from the network.
We inspect the compressor, which is located at the lower rear of the refrigerator. It must be free of defects and damage. After visual inspection, we check the winding. Disconnect flexible wires before inspection. It is necessary to check the winding circuit for continuity using a tester.
After that, you can proceed to diagnostics of small parts - the temperature sensor. To do this, use a screwdriver to remove and disconnect the wiring. Each wire is tested for functionality with a tester.
All malfunctions of refrigeration equipment are divided into two parts:
The inner chamber is not cooled during normal engine start. Most often, the breakdown lies in the main components of the equipment.
The unit does not turn on or turns on for a short time and then turns off. Here, the problems are associated with a malfunction of the electrical circuit of the household appliance.
In the first case, only highly qualified craftsmen should be engaged in repairs, since diagnostics and repairs can only be carried out with the help of special equipment and long-term skills.
But if the electrical mechanism of the unit is out of order, then you can solve the problem on your own - after carrying out diagnostics, identifying the causes of the breakdown and replacing the failed part.
In conclusion, I would like to note that every unit, even from a world-famous manufacturer, may stop working at some time. To repair a refrigerator, you need to figure out what the matter is, purchase the necessary part and stock up on free time. If you do not have special experience in the repair of household equipment, it is better to contact the masters of their craft, who will solve all problems quickly and efficiently.
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LG refrigerators have taken a leading position in this segment of technology. The company is considered a global center for innovation. All brands of refrigerators from two-door to sophisticated French and American series are made soundly, stylish design. There are almost no malfunctions of LG refrigerators during the warranty period. Often, repairs are associated with voltage drops in the network - the electronics cannot withstand. When buying a modern refrigerator model, you need to take care of installing it through a voltage stabilizer.
LG refrigerators last a long time. However, technology tends to fail over time. From the first day of operation, you need to take care of the electronic control unit and the compressor, especially the inverter one. Electronic configuration of the program requires attention.Step-by-step instructions are provided in the corresponding section of the documentation for the device.
Some models are noted in reviews as unnecessarily noisy. Part of the reason lies in the build quality at sites scattered around the world. However, the correct leveling, tightening the fasteners with your own hands, and standard ventilation gaps will partially eliminate the noise of the LG refrigerator. Repair is required when extraneous knocking, whistling or strong heating of the compressor is added to the noise.
Breakage is considered if one of the refrigerator chambers has ceased to maintain a given mode. Ice has appeared in the freezer or freezing temperatures are observed in a cold cabinet. There may be several reasons:
failures in the automatic regulation system;
failure of temperature sensors;
faulty relays;
refrigeration circuit problem associated with freon leakage or compressor failure;
malfunction of the solenoid valve in a single-compressor double-chamber apparatus.
Malfunction of the No Frost system of the LG refrigerator will let you know by a violation of the temperature regime, icing inside the cooling chamber. The air cooling system for products is complex and balanced. The complex includes an evaporator, from which cold air is blown into the freezer by a fan. Then the gas flows through the air valve to the heating of the positive chamber. Problems may be related to:
the temperature sensor in the evaporator or chambers has failed;
the fan stopped working due to icing or motor failure;
heating element does not work;
air valve not adjusted.
The appearance of ice in the freezer, "fur coats" in the refrigerator indicates a possible malfunction in the condensate drainage circuit.
Refrigerators of this series are characterized by two compartments operating from one compressor. In this regard, a magnetic valve is used that directs the refrigerant flow cyclically and alternately into the chambers. If the solenoid valve for switching modes is "stuck", then the temperature in the freezer will decrease and rise at the top. The unit is not being repaired; valve replacement is required.
Such malfunctions are typical for refrigerators, when on one compressor the mode in the chambers is independent, there are 2 control buttons. As a preventive measure, it is recommended to change the regime, with a deviation from the average values, in case of emergency and not for long.
The apparatus of the Russian assembly, two-chamber, with a "no frost" system, a large freezer at the bottom - has gained popularity in Russian families. Full Know Frost, height 188, bottom freezer, LED backlighting and trouble-free operation for more than ten years - this is how users characterize the device.
The remote control with push-button switching of modes signals about deviations on the Freeze Temp display. After turning off the power, all settings are set to the middle position. The electronic module is located in the upper part under the decorative panel. The built-in self-test mode can be manually activated, testing all systems will take 2 hours.
Typical malfunctions found during diagnostics:
the second light on the left indicates an open or short circuit in the freezer sensor;
the fourth light on the left is on - defrost sensor malfunction;
all the lights are on - No Frost is not working.
If ice is found under the bottom shelf of the freezer, the condensate drain system is clogged. To clean it, you will need to remove the decorative lining and find the drain hole. You can defrost the tube yourself. For all manipulations, the refrigerator must be de-energized.
If Know Frost works, the sensors are working properly - problems in the cooling circuit. Only the master can check the amount of freon, whether there is a passage in the capillary tube, the compressor's performance.
Model in silver color with linear inverter compressor, height 200 cm. Multi-stream cooling system and Know Frost are used. Electronic control with self-diagnostics.
Analysis of equipment failures before the end of the warranty period shows that the model is reliable and rarely gets repaired. The main causes of breakdowns:
the starting relay does not work;
the electronic control unit burned out;
the temperature sensor has failed;
the sealing rubber is worn out.
Most often, problems arise in switching the operating modes of two circuits or in the incorrect operation of the Nou Frost system. The inverter motor has a 10-year manufacturer's warranty. Continuous operation of the sealed circuit allows you to save pipe connections from starting shocks and vibrations, preventing freon leakage.
Model with a mirrored front surface, two-compartment, with a bottom freezer. Compressor one. Electronic control. Defrosting of the upper chamber is automatic, of the lower one - manual.
Refrigerators malfunctions are related to their design:
does not keep the freezer or refrigerator mode;
an ice coat is growing in the refrigerator;
water accumulates under the drawers of the refrigerator;
puddles are on the floor under the refrigerator.
If the mode in the chambers is violated, one of the temperature sensors may have failed. Another reason is often a malfunction of the bypass solenoid valve. The temperature in the refrigerator can be high due to a loose door closing, worn out sealing rubber. Sometimes the contact is broken, the light in the cell is on even when the door is closed.
If you have done everything that the instructions prescribe, it remains to call the wizard. He will establish the reasons. In addition to the listed malfunctions, there may be:
Freon leak from the damaged circuit;
malfunction of the compressor or engine start relay;
blockage of the compressor tube.
The signs of problems are similar, and only a specialist can find and fix the breakdown.
Two-compartment refrigerator, beige with a quiet inverter compressor and a Nou Frost full defrost system. The freezer compartment is located at the bottom. Electronic control, push-button display. No temperature display. The backlight is produced by an incandescent lamp.
Malfunctions of the LG refrigerator of this model and their elimination are not original. But using an inverter compressor removes problems with the refrigerant circuit. Isobutane used, capillary clogging unlikely. Radiator leaks are rare. Therefore, the circuit is reliable.
The Nou Frost system, the serviceability of temperature sensors and relays, and the removal of condensate can become problematic. A specialist can determine the exact reason why it is warm in the positive chamber and ice freezes in the freezer. It is the user's task to comply with the operating conditions.
We offer you to look at an overview of the LG refrigerator model.
