It’s not just an annoyance when your LG washing machine fills up with water and then immediately drains it. Your laundry routine may be interrupted by this issue, leaving you perplexed as to what’s wrong. You can solve the problem and get your washer back in working order more quickly if you are aware of the potential causes.
This malfunction can be caused by a variety of things, ranging from straightforward user error to intricate mechanical issues. Occasionally, a minor mistake such as setting the wash cycle incorrectly or having a clogged hose can cause the problem. In other situations, malfunctioning parts such as the pressure switch or drain pump may be the cause.
You can take the appropriate action to resolve the issue, whether it calls for a professional repair or a simple do-it-yourself fix, by recognizing the symptoms and determining the most likely causes. Let’s examine the typical causes of this behavior in LG washing machines as well as solutions for you.
| Reason | Explanation |
| Clogged drain hose | A blocked or kinked drain hose can cause water to drain immediately. |
| Incorrect installation | If the drain hose is positioned too low, water may flow out as soon as it enters. |
| Faulty water level sensor | A malfunctioning sensor may wrongly detect water levels, triggering drainage. |
| Control board issues | Problems with the control board could cause improper draining cycles. |
The most common causes of an LG washing machine that fills up with water and then quickly drains it are installation problems or settings malfunctions. The most frequent cause is an improperly positioned or too low drain hose, which creates a siphoning effect and draws water out of the system as soon as it enters. A malfunctioning control board or pressure switch may also be the source in some circumstances. Check the hose height, connection, and machine settings to resolve the issue. If the problem persists, seek professional assistance.
- Why does this phenomenon occur?
- Check the connection of the drain hose
- The sewer pipe is clogged
- Problems with the water level sensor
- Water inlet valve
- Video on the topic
- The machine fills with water and immediately drains it
- WASHING MACHINE FILLS AND DRAINS WATER
- The washing machine drains water during washing
- Fills and drains water – SELF-DRAINING!
- The LG washing machine pump is constantly running; Simple repair
Why does this phenomenon occur?
The LG washing machine’s drain system is the source of the problem if the water set does not stop without also stopping the system. Loss of control over the water level and its retention in the tank can result from a number of malfunctions. The most frequent breakdowns among them are as follows:
- violations during installation and connection of the drain hose to the sewer;
- clogged sewer system;
- faulty waste liquid release valve;
- failure of the pressure switch;
- failures in the operation of the control board.
Diagnostics and repairs must be initiated right away if it is discovered that the machine does not hold water in the tank. In addition to the apparent rise in utility costs, the owner will experience severe wear and tear on the washing machine’s parts as well as the possibility of flooding if they continue to operate in this manner. We consequently start searching for a "sore spot" right away.
Check the connection of the drain hose
The most frequent cause of continuous draining is diagnosed first, followed by the rarest and largest-scale cause. The drain hose is the first component to be tested since it is frequently damaged by careless machine relocation or poor installation. There are two methods to determine if the hose is not correctly attached.
- Visual inspection. Everything is simple here: according to the operating rules, the hose is fixed above the level of the bottom of the washing machine tank. For LG models, the minimum mark is approximately 0.5 m from the floor level. If the requirement is met, then the water will not spontaneously flow out of the drum. Otherwise, the liquid just collected will not be retained inside the machine and will immediately start to go into the sewer. The pressure switch will react to the leak by signaling a decrease in the level and starting a repeat set. And so on ad infinitum.
- Test wash. When you can’t get to the hose, we conduct a simple test. Start a quick cycle and wait to see if the machine starts draining water immediately. If a drain is detected, then you will have to somehow turn the machine around and change the position of the drain hose.
The LG washing machine comes with a plastic loop that is intended to be used to secure the hose to the machine gun’s back panel. This loop is supplied by the manufacturer.
We proceed with the diagnostics if the drain hose is in good condition. Checking the sewer pipe comes next.
The sewer pipe is clogged
A common house drain pipe blockage is another potential issue. When multiple people in the home drain water at the same time, this frequently occurs. The liquid from the drum is forced into the sewer as a result of the riser overflowing and the sewer’s pressure dropping.
A quick test to verify your hypothesis is to turn on the kitchen or bathroom faucet and see if the water drains more slowly. Any drain in the house will experience similar issues if there is a blockage in the sewer system.
The situation can only be resolved by cleaning the pipe. With the aid of common household plumbers or with specialized tools, you can complete this task on your own. It is advised to use one trick to ensure that you don’t stop washing: take the drain hose off of the sewage and drop the free end into the sink or bathtub. Once water begins to flow into the sink, the issue will temporarily go away. The only "but" is that you will need to give the ceramics a thorough cleaning after washing.
Problems with the water level sensor
In the event that abrupt continuous drainage occurred, the pressure switch is most likely "at fault." The pressure switch is in charge of regulating the tank’s water level and informing the control board when the water intake should begin and stop. When a problem arises, the sensor is unable to monitor the tank’s level of filling, which causes the tank to overflow and trigger emergency "self-draining." In other words, the device prevents leaks in the electronics by draining water into the sewer. The pressure switch breaks down due to the following issues:
- oxidized contacts of the device;
- short circuit wiring;
- violation of the sealing of the sensor membrane;
- damage or clogging of the pressure tube.
The pressure switch needs to be taken out of the machine in order to be tested for functionality. Unplug the washing machine from the network, take off the top cover, and search for a circular plastic cover near the case’s rear wall. Take off the fasteners and give the part a thorough inspection. Should you notice any signs of oxidation on the contacts, use a knife to clean the ends. However, a replacement is necessary if there is evident damage to the tube or if there is a possibility that there is a short circuit in the wiring. A new level sensor can be easily and affordably replaced.
Make sure the washing machine is fully de-energized before disassembling it.
- Purchase a pressure switch suitable for the serial number.
- Disconnect the long thin tube from the faulty sensor.
- Unclamp the terminals, unscrew the two fixing screws and remove the sensor.
- Install a new pressure switch in its seat, fix it with screws.
- Connect the wiring through the terminals.
- Hook the thin hose into place.
Once the breakdown has been eliminated, quickly test wash without doing any laundry. The issue is resolved and you can carry on washing if the water has accumulated without draining. If not, search for the issue more thoroughly.
Water inlet valve
When there is an issue with the inlet valve, the machine keeps filling the tank with water—it does not stop. Repetition of the process results in another instance of the automatic "self-draining." The situation can only be resolved by replacing the device.
- Select a valve and removable clamps that match the serial number of the model in advance.
- Disconnect the machine from the power supply.
- Remove the top cover from front-loading washing machines and the side cover if the model is vertical-loading.
- Find the valve, which is located next to the existing hose.
- Release the device from the pipes and wiring.
- Unscrew the screws holding the body and remove the clamps.
- Take out, slightly turning the part.
- Install a new valve in its original place.
That’s the only thing. The new part only needs to be secured with clamps and clips, and the wiring and hoses need to be connected. When it’s done, close the lid and begin a test wash.
When your LG washing machine fills up with water and then quickly empties it, there’s probably a drainage system issue or a malfunctioning sensor at play. Although some of these issues may appear complex, the majority can be fixed with some simple troubleshooting.
Check your drain hose’s position first. If it’s too low, water may be flowing out of it as soon as it enters due to gravity. Often, the issue can be resolved by simply adjusting the hose’s height in accordance with the manufacturer’s instructions. Make sure the hose is free of any kinks or obstructions that might be interfering with appropriate drainage.
The water level sensor or the control board may be the issue if the drain hose is positioned properly. This machine may misjudge the water level due to a malfunction, which would cause the water to empty too soon. In these situations, expert assistance may be required.
