The situation when the washing machine LG stops draining water and, as a result, refuses to proceed to the spin stage, is one of the most common problems in the operation of household appliances. Water remains in the drum, laundry floats in dirty slurry, and the washing program either freezes at a certain stage or crashes with an error indication. Most often, owners encounter error codes OE or E20, which directly indicate problems with the drainage system.
In this case, there is no need to panic, since in most cases the breakdown is mechanical in nature and does not require calling an expensive technician. However, the problem cannot be ignored: long-term presence of water inside the tank can lead to oxidation of contacts, the appearance of an unpleasant odor, or even failure electronic module management. Understanding the operating principles of the drainage unit will help you quickly isolate the problem.
In this article we will analyze in detail all the possible reasons for stopping the drain, from a banal blockage to a pump breakdown. You will learn how to carry out diagnostics yourself, what tools you will need for disassembly, and how to safely fix the problem, saving your family budget. Remember that any work with electrical appliances requires preliminary power outages.
Primary diagnostics: error codes and equipment behavior
Modern washing machines LG equipped with a developed self-diagnosis system. When the sensors detect that the water level in the tank does not decrease within the allotted time, a corresponding message is displayed on the display. Most common code OE (Drain Error), which signals the impossibility of pumping water. Sometimes, instead of an alphanumeric code, the washing mode indicators may flash, which is typical for models without a display.
It is important to distinguish between the situation when the water does not drain at all, and the case when draining occurs, but extremely slowly. If the water remains motionless in the tank, most likely the problem lies in a mechanical blockage of the pump impeller or an open circuit in the power supply. If the water leaves, but the machine “buzzes” longer than usual and cannot gain speed to spin, this may indicate filter clogged or narrowing of the lumen of the drain hose.
⚠️ Attention: If you see sparking or smell burning plastic when you try to turn on the drain, unplug the unit immediately. Continued use may result in a fire in the wiring.
It is also worth paying attention to when the problem occurs. If the machine suddenly stops draining water during a cycle, this often indicates a foreign object has entered the machine. If the problem grew gradually (the machine began to spin worse, extraneous sounds appeared), then wear of parts or the formation of a dense coating is likely.
Clogged drain filter: the most common cause
The first item to check if there is no drainage is drain filter. It is located in the lower right part of the case behind the decorative panel or hatch. Its main task is to retain large objects (coins, buttons, bra wires) so that they do not get into the pump. This is where a plug most often forms, blocking the flow of water.
To clean the filter, you will need a flat container with low sides (such as a box lid or baking tray) and a cloth. Before unscrewing the plug, be sure to place a container, as 300 to 500 ml of dirty water will flow out of the hose. Unscrew the filter counterclockwise slowly, controlling the fluid flow. After removing the plug, carefully inspect it and the internal cavity for debris.
☑️ Cleaning the drain filter
Users often forget that behind the filter there is also a small emergency drain hose (if provided by the design of a particular model LG). You can drain the bulk of the water through it without unscrewing the main filter if the collection container is too small. After removing debris, be sure to check whether the pump impeller rotates freely, which can be seen through the filter hole. It should spin easily, with a slight click of the magnet.
If the filter is unscrewed with great force, do not use brute force. Spray the threads with WD-40 and wait 10-15 minutes to dissolve the limescale.
Checking the drain hose and sewer system
If the filter is clean, the next step is to check the path of water from the car to the sewer. Drain hose may be pinched, twisted or clogged with fatty deposits. This happens especially often if the washing machine is installed close to a wall or in a niche where the hose is under mechanical pressure.
It is necessary to disconnect the hose from the machine body and from the sink siphon or sewer pipe. Blow it out or rinse it under strong water pressure. Over time, mucus accumulates inside the corrugated walls of the hose, which narrows the diameter and interferes with the free flow of water, which is critical for powerful pumps LG. Also check the connection to the sewer: often a blockage occurs there due to the accumulation of hair and lint.
| Symptom | Possible reason | Test method |
|---|---|---|
| The water doesn't go away at all | Completely clogged or kinked hose | Visual inspection and purging |
| Draining is slow | Partial blockage or narrowing | Pressure flushing |
| Gurgling in the sink | Problems with the drain pipe | Checking the riser ventilation |
| Water returns to the tank | Incorrect siphon installation | Checking the height of the drain loop |
Pay special attention to the installation height of the drain hose. According to the instructions, the hose loop should be at a height of 60–90 cm from the floor. If the hose is lying on the floor or is connected too low, a siphon effect can occur, where water flows by gravity into the drain during drainage, or, conversely, dirt from the sewer is thrown back into the machine, creating the illusion of a bad drain.
Diagnostics and replacement of the drain pump (pump)
If the lines are clean and the water is standing, there is a high probability of a malfunction drain pump (pumps). This is a consumable material, the service life of which is usually 5–7 years of active use. Inside the pump, the motor winding may burn out, the shaft may jam, or one of the impeller blades may break.
To check the pump in models LG Partial disassembly of the housing is often required. Remove the top cover (two screws on the back) and the front panel (usually removed after removing the cuff clamp and screws from the bottom). The pump is located at the bottom of the tank. Visually inspect it for melting, cracks or signs of corrosion. Check the voltage at the terminals when starting the drain program (a multimeter and safety precautions are required).
⚠️ Attention: When testing the pump with a multimeter, make sure your hands are dry and the tool is in good working order. 220V voltage is dangerous to life. If you do not have skills in working with electricity, limit yourself to a visual inspection and testing the winding for resistance.
If the impeller rotates slowly, makes a grinding noise, or has play in the shaft, the pump must be replaced. In some cases, cleaning the shaft from wound threads helps, but if the spool burns out, only installing a new part will help. When purchasing a new pump, pay attention to the location of the mounting tabs and the outlet angle of the nozzle, since LG There are different modifications.
How to remove the drain pump without completely disassembling it?
On some LG models with a 5-6 kg load, you can get to the pump by simply laying the machine on its side and removing the bottom metal bar. However, direct drive models often require front panel removal.
Problems with the electronic control module
When the mechanical part is working properly and the pump is working, the problem may be hidden in the “brains” of the machine - electronic module management. The triac responsible for supplying voltage to the pump could burn out due to a power surge or moisture ingress. In this case, the command to drain is given, but no electric current is supplied to the pump.
Module diagnostics require special knowledge and equipment. Visually, traces of burning, swollen capacitors, or black deposits in the area of the tracks leading to the pump may be visible on the board. If you find such defects, repairs at home are only possible if you have soldering and circuit design skills. Otherwise, the module will have to be taken to service or replaced entirely.
Sometimes the failure is software in nature. Electronics could freeze due to a power surge. In this case, a complete error reset helps. Unplug the machine for 20-30 minutes, then turn it on and run the “Drain” or “Spin” mode. If the problem occurs cyclically, there may be a hardware problem.
If the pump hums but does not spin and the impeller is free, the problem is most likely in the control module or broken wiring, and not in the pump itself.
The influence of the heating element and water level sensor on spin
Paradoxically, the spinning and draining process can be affected by the serviceability of the heating element (heating element). If a thick layer of scale has formed on the heating element, particles of which have broken off, they could get into the drain pump and jam it. In addition, some models LG spin is blocked if the temperature sensor or the heating element itself shows an error to prevent damage to the laundry or the tank.
Also worth mentioning water level sensor (pressostat). If it transmits incorrect data that there is no water in the tank (although there is some), the control module may not start the pump or, conversely, may not give a spin command, “thinking” that the wash is still running. Check the integrity of the tube going to the pressure switch and that there is no water in it.
In rare cases, the reason lies in wear of the motor brushes (in models with a commutator motor) or problems with the drum bearings, but then this is accompanied by strong noise and vibration even before the draining stage. However, if the machine hums when you try to spin, but the drum does not rotate, this is a problem with the engine or drive belt, and not with the drainage system.
FAQ: Frequently asked questions
Why does my LG machine hum when draining, but does not pump water?
A humming sound indicates that the pump is receiving power and is trying to operate. Most likely, the pump impeller is blocked by a foreign object (coin, bone) or jammed due to wear on the bushings. Less commonly, the cause is a break in one of the pump motor windings.
Is it possible to run the spin cycle if the water has not drained?
Automation of washing machines LG will not allow the spin cycle to start if there is water in the tank. This is protection against spillage and damage to bearings. First, you need to eliminate the cause of the lack of drainage and remove the water through an emergency filter or hose.
How often should the drain filter be cleaned?
It is recommended to carry out preventive cleaning of the filter every 3–6 months, depending on the frequency of washing. This will extend the life of the pump and prevent unpleasant odors and error codes.
What does flashing lights without an error code mean?
On models without a display, the combination of flashing lights corresponds to a specific error code. You need to look for the decryption in the instructions for your specific model. LG. If the Drain or Spin light flashes frequently, it indicates a problem. OE.
Is it possible to drain water from an LG car with a hose without a filter?
Yes, if your model has a thin emergency hose next to the filter. You can remove it, lower it into a bucket and open the cap. This will allow you to drain the water carefully, without spilling it on the floor, before the main cleaning of the system.