A sudden stop of refrigeration equipment or the appearance of extraneous noise often requires access to the technical compartment of the unit. Owners of LG household appliances are faced with the need to get to the compressor, condenser or filter drier to diagnose faults. Removing the back panel is the first and most important step in the process of self-repair or deep prevention of the system.
Improper dismantling can lead to damage to the plastic fasteners or loss of system tightness, so it is important to act consistently. In this article we will look at all the nuances of working with metal and plastic back covers, typical for various models LG. You will learn what tools you will need and how to avoid common mistakes that can cost expensive repairs.
Before you begin, you need to make sure that you fully understand the structure of your specific unit. The design may vary depending on the series DoorCooling+ or classic models with a bottom freezer. Safety should be priority number one, since we are talking about an electrical appliance and refrigerants.
Required tools and measures safety
Preparing the workplace and having the right tools is the key to successfully completing the operation without scratches or broken screws. You will need a set of screwdrivers as fasteners come in different types and sizes. Phillips screws are most often used, but some models may also have hex heads.
- 🔧 A set of screwdrivers with magnetic tips (PH1, PH2) for securely gripping screws.
- 🧤 Protective gloves with a rubberized coating to protect your hands from sharp metal edges.
- 🔦 A bright flashlight or headlamp for illuminating hard-to-reach areas at the bottom of the unit.
- 🧹 A vacuum cleaner with a narrow nozzle for removing dust from the compressor immediately after removing the cover.
It is strictly forbidden to start work while the power cord is connected to the mains. Even briefly touching live parts can cause serious injury. It is also worth freeing up space around the refrigerator in order to have free access to it from all sides, especially from the back.
⚠️ Attention: Before starting work, be sure to wait until the compressor has completely stopped. A hot motor can cause a burn if accidentally touched, and a sudden cooling of heated parts when in contact with a cold tool is undesirable.
If you plan not only to remove the cover, but also to manipulate the tubes, make sure that there is good ventilation in the room. Although the refrigerant in a working refrigerator does not disappear anywhere, if the tubes are accidentally damaged during careless dismantling of the panel, the gas can escape outside. Ventilation room in this case will become critical.
Design features of LG rear panels
The back wall of LG refrigerators can be made of thin sheet metal or durable composite plastic. Metal panels are more often found in older models and budget series, while modern units are often equipped with plastic covers that cover not only the engine compartment, but also the side parts.
The main difference is the method of fastening and the number of fixation points. Metal is usually held in place by a large number of small screws around the perimeter, while plastic may have hidden latches in addition to visible fasteners. Understanding the type of your panel will help you choose the right dismantling strategy.
It is important to consider that in some models LG the rear panel is part of the noise insulation system. A layer of foam material can be glued inside the metal sheet. When removing such a panel, you must act carefully so as not to damage this layer, as it reduces vibration noise during compressor operation.
You should also pay attention to the presence of ventilation holes. They can be located directly on the removable panel or be part of the housing that the panel covers. Ventilation holes provide air flow to cool the condenser, and their overlap during reassembly is unacceptable.
Step-by-step instructions: dismantling the metal panel
The process of removing the metal cover requires care, since the screws are often located close to each other. First, visually inspect the perimeter of the panel to determine the number and location of fasteners. Usually they are located around the entire perimeter, including the lower part, which can be hidden by anthers.
☑️ Preparation for dismantling
Start unscrewing the screws from top to bottom or in a circle, putting them in a separate container. A magnetic screwdriver will be very useful here, since a screw falling inside the case can cause a short circuit or get stuck in the mechanisms. After removing all visible screws, the panel may still be supported by the lower hooks.
Gently pull the bottom of the panel towards you, lifting it up. The metal can be sharp, so use gloves. If the panel does not come off, do not use excessive force—you may have missed a screw or two at the bottom that is hidden by a trim strip or plinth.
| Fixture Type | Location | Tool | Nuances |
|---|---|---|---|
| Screws PH2 | Around the perimeter | Phillips screwdriver | They often turn sour, you need a good stop |
| Screws with washer | In the corners of the panel | A screwdriver or key | The washer may get lost |
| Latch | Bottom part | Hands (without tool) | Require careful bending |
| 8mm bolts | Rarely, on older models | Open-end wrench | You need to hold the nut |
After successfully removing the panel, inspect it for deformations. If the metal is bent, it must be straightened before reinstalling it to ensure a tight fit and no vibration. Warped panel may create additional noise when the refrigerator is operating.
Removing the plastic cover of the compressor compartment
Plastic casings on modern models LG often have a more complex geometry and can cover the compressor from several sides. The main principle here is to find all attachment points that may be disguised as decorative plugs. Carefully inspect the surface of the plastic for the presence of small round holes.
Hidden fasteners
Often additional screws may be hidden under decorative stickers or in niches. Probe the surface with your fingers to locate the indentations.
Use a plastic spudger or card to pry the latches loose if the screws are removed but the panel will not come off. It is better not to use metal tools to avoid leaving scratches on the glossy plastic or breaking it. The movements should be confident, but soft, with a characteristic click when the latch is released.
In some models, access to the screws is opened only after removing the lower decorative grille (plinth). To do this, you need to pull the grill towards you; it is held on by plastic pins. Removing it will reveal a series of screws holding the main back wall.
⚠️ Attention: The plastic becomes brittle over time, especially in the heating area from the compressor. Do not apply sudden jerking efforts to avoid breaking the fastening ears, the restoration of which will require soldering or replacing the part.
If tubes or wires are connected to the casing (for example, temperature sensors), do not pull the panel far. First, evaluate the length of the communications and, if necessary, carefully disconnect the connectors or move the tubes to the side. Wiring integrity must be preserved at all costs.
Access to technical components after removing the wall
After the rear wall is removed, you have access to the main components of the refrigeration machine. The compressor, condenser grille, capillary tube and filter drier are located here. It is these elements that most often require inspection, cleaning or replacement during repairs.
The first thing to do is to conduct a visual inspection for oil leaks or obvious mechanical damage to the tubes. If you see oily stains on the floor under the refrigerator or on parts, this is a sure sign of a depressurized system. In this case, simple cleaning will no longer help, you will need to call a specialist for sealing and refueling.
- 🌬️ Condenser - black grille at the back, often covered with a layer of dust, requiring cleaning.
- 🔩 Compressor - black “tank” at the bottom, which is the heart of the refrigeration unit system.
- 💧 Capillary tube - a thin copper tube that circulates freon.
- 🛡️ Filter drier - a small copper cylinder that removes moisture from the system.
Cleaning the condenser is the most common procedure that can be performed on your own. Dust collected between the grille slats impairs heat transfer, causing the compressor to work longer and more intensely. Use a soft brush or vacuum cleaner at low power to remove dirt.
When inspecting, pay attention to the condition of the rubber shock absorbers on which the compressor is mounted. If they dry out or lose elasticity, vibration will be transmitted to the body, creating noise. Replacing these small parts can significantly improve acoustic comfort.
Typical errors during dismantling and their consequences
One of the most common mistakes is the loss of fasteners. Small screws easily roll under the refrigerator or fall into the cabinet. If a screw falls onto a running compressor or into an electrical circuit, it can lead to a short circuit or jamming of the mechanism.
Another common mistake is using excessive force when unscrewing rusted screws. As a result, the screw heads break off and it becomes extremely difficult to remove them. In such cases, you have to use special extractors or drill out the remaining fasteners, which requires additional skills.
Some users forget to unplug the refrigerator and begin to twist the screws with one hand, holding a screwdriver with the other. This is a gross violation of safety regulations. Even if nothing seems to happen, the risk of electric shock or damage to the control electronics remains high.
⚠️ Warning: Never use lubricant (WD-40, oil) to make it easier to loosen screws on the back wall if they are located near electrical contacts or the compressor suction port. Grease can cause a short circuit or damage the seal of the system.
It is also worth mentioning the error of incorrectly installing the panel back. If you do not tighten all the screws or leave gaps, the refrigerator will operate louder, and moisture and dust can get inside, accelerating corrosion. Tight installation The rear wall ensures proper air circulation.
Assembling and checking the operation of the refrigerator
The assembly process is carried out in reverse order. Place the panel in place, making sure that all the guides and latches are in their grooves. Start tightening the screws, but don't tighten them all the way down at once—tighten all the fasteners first to level the panel.
Once all the screws are installed, tighten them evenly. Check that the panel does not bend anywhere and does not touch vibrating parts such as pipes or the compressor itself. The gap between the panel and technical components should be uniform around the entire perimeter.
Plug in the refrigerator and listen to it work for the first 10-15 minutes. If there is a new noise or hum, the panel may be installed incorrectly or may be touching the tube. In this case, the procedure will have to be repeated, eliminating the source of extraneous sound.
Regular maintenance, including removing the back wall and cleaning the capacitor, extends the life of your LG. It is recommended to carry out this procedure once every 1-2 years, depending on the dustiness of the room and the presence of pets.
Is it possible to remove the back wall without moving the refrigerator completely?
Theoretically, this is possible if you have a very narrow and long screwdriver, as well as sufficient space between the wall and the unit. However, it is extremely difficult to do quality work, illuminate all corners and not drop the screws inside in such conditions. It is still recommended to move the refrigerator at least 50-70 cm.
What to do if the screws on the back wall are stuck and cannot be unscrewed?
Do not use excessive force, so as not to tear off the thread or head. You can try gently heating the area around the screw with a hairdryer (without overheating the plastic) to expand the metal. Lightly tapping the head of the screw with the handle of a screwdriver also helps to destroy the oxides.
Do I need to change the sealing rubber on the rear panel?
On most LG models, the rear panel is not provided with a sealing rubber, since the panel is metal or plastic and fits tightly due to the geometry. If your model has a special rubber circuit and it is damaged, it is advisable to replace it to reduce noise.
Is condensation that sometimes drips from behind after removing the panel dangerous?
During operation, condensation may form on the evaporator tubes and capillaries due to temperature differences, especially in hot weather or high humidity. This is fine. However, if water flows constantly, this may indicate a clogged drainage system or problems with defrosting.