Most people who have dishwasher problems are quick to get them repaired. For those with LG dishwashers, the problems are often easy to identify and fix. You just need to look in the right direction.
Generally speaking, an LG dishwasher will stop working altogether when there is a power problem. This could include burnt wires or a tripped breaker. Similar issues will occur if the door latch is broken and the door won’t close properly.
The first step in repairing your LG dishwasher is diagnosing the problem. There are a wide range of issues that can occur and in many cases, the dishwasher will give you clues as to why it is no longer operating properly.
As you look down through the general list below, you may find the solution and often, it can be fixed in a matter of minutes. If there are more specific issues, such as lights, error messages, or a beeping noise, it may be a more specific problem.
LG Dishwasher Not Working
One of the most common reasons why an LG dishwasher is not working is because the power is no longer getting to the machine. This can be traced to any one of a number of different problems, but consider the following 4 issues when tracing the lack of power.
1. Tripped Breaker – If the breaker trips, it is not going to allow any power to get to the dishwasher. You can often recognize a tripped breaker because it does not quite line up with the other breakers in the panel. There may also be a small red area showing on the breaker.
A tripped breaker can often be fixed by simply switching it off fully and then back on again. If there is a problem with the breaker, it will likely trip again. If the problem is with the dishwasher, it will trip while the dishwasher is running.
2. Overloaded Circuit – This is an issue that is very similar to a tripped breaker. If there are too many appliances operating on a single circuit, it will overload and the breaker will trip to protect itself.
Many of the other appliances that could be running on the same circuit as a dishwasher use a lot of power. This includes toasters, blenders, and even microwave ovens.
It is always best if your dishwasher is on its own circuit using a 20 amp breaker. If you must have your dishwasher on a circuit with other receptacles, don’t operate other appliances while running the dishwasher.
If you are using a 15 amp breaker, you may need to increase it to a 20 amp breaker. This would require the assistance of an electrician because they will have to run heavier wires to handle the extra amperage.
3. Thermal Fuse – The thermal fuse is an internal fuse that is similar to a breaker. It detects the heat in the dishwasher and if things get too hot, it breaks continuity and stops the power from flowing.
When the thermal fuse is operating properly, it is a protection to the dishwasher. If it is shorting out or broken, the dishwasher will not start until the fuse is replaced.
You can check the continuity of the thermal fuse after turning off the power to the dishwasher, removing the fuse, and connecting to both sides with a multimeter.
4. Extension Cord – Dishwashers, as well as other large appliances, should always be run by plugging them directly into the receptacle. Extension cords may not carry enough electricity to allow them to operate properly.
If you must use an extension cord to operate your LG dishwasher, make sure that it is heavy-duty. You should also not use a multi-port receptacle, as that can overload the circuit.
There are other issues that can lead to an LG dishwasher not working. Consider the following:
Child Lock – If the child lock was inadvertently activated, the dishwasher will not operate. The dishwasher was designed that way.
You can turn off the child lock by depressing the two buttons that are marked on the dishwasher. You can also check the manual to see which two buttons to depress. Hold them in for a few seconds and the child lock will turn off.
Door Latch/Switch – If the door is not closed, the dishwasher will not operate. In the same way, if the dishwasher thinks the door is not closed, it will not operate.
Check the door latch by pulling on the door and seeing if the door opens. You can check the continuity on the switch with a multi-meter. Replacing these items may get your LG dishwasher up and running again.
Control Lock – Similar to a child lock, the control lock keeps the dishwasher from turning on accidentally. If it was inadvertently activated, check the manual to see which buttons to press to turn it off.
Delay Start – If you accidentally selected the delay start feature, then the dishwasher will not operate until the timer is up.
Water Supply – Your LG dishwasher requires a certain amount of water pressure to start and remain running. If you aren’t getting enough water, perhaps due to a pinched water line or low water pressure, the dishwasher will not operate.
Control Board – The control board is like the brain of your LG dishwasher. Everything that runs in your dishwasher runs because of the control board.
Unfortunately, control boards cannot be tested easily but you can visually inspect them using a magnifying glass. If you see any burnt circuits or cracks, replace the control board and power ribbon.
Drive Motor – If the motor is not operating, the unit will not run. You can check the drive motor by testing continuity using a multi-meter. The drive motor may also make a loud squealing noise before it stops running.
Interrupted Cycle – One other possibility is that the cycle was interrupted before it was completed. An interrupted cycle will cause the dishwasher to start where it left off.
The cycle may be interrupted if the door was opened or if the power cycled. You can reset the LG dishwasher by unplugging the dishwasher or turning off the circuit breaker. Leave the power off for up to five minutes before restoring it.
LG Dishwasher Keeps Turning On And Off
One of the more specific issues is for an LG dishwasher to keep turning on and off. Here are a few possible solutions:
Electrical Short – Check for loose wires or a short in the thermal fuse. It may get electricity momentarily but the connection may not continue. It is also possible for a control board to be shorted out.
Water Level – Your LG dishwasher must have proper water pressure. If you are not getting enough water pressure due to a pinched line or low water pressure from the city, it may need to be addressed.
Sump Issues – Cleaning the dishwasher on a regular basis is important. If food particles build up around the sump and obstruct it, they may stop the dishwasher from operating. Clean the area and try again.
Drain Hose – The LG dishwasher may stop if the drain hose is clogged or pinched. Often, this is an issue that can be corrected by simply moving the hose around and allowing the obstruction to free itself.
Door Latch or Switch – When the door to the dishwasher is open, it will not operate. If your LG dishwasher thinks that the door is opening and closing due to a bad door sensor switch, it may cause the dishwasher to turn on and off.
LG Dishwasher Keeps Turning On
One of the most common problems that cause an LG dishwasher to continue to turn on is a stuck button on the keypad. You can remove the keypad control panel and look for any buildup.
At times, the control panel may be able to be cleaned gently with a pencil eraser. You can also work the keypad and see if you can get things freed up.
A faulty control board may also lead to the dishwasher turning on unexpectedly. You can’t test the control board but you can visually inspect it for damage. It can easily be replaced.
If you have a problem with the dishwasher turning on unexpectedly, unplug the dishwasher or turn off the breaker until you get it fixed.
LG Dishwasher Does Not Fill With Water
When your LG dishwasher is not filling with water, it is often a problem with the water supply. Check the water supply hose carefully to see if the water is turned off, if the hose is kinked or pinched, or if you have low water pressure.
If the problem is low water pressure, you can try running the LG dishwasher at night when nobody is using water in the home.
Another issue is associated with the water inlet valve. If it is clogged or broken, it may not let water into the machine.
Check the float switch to see if it has become stuck in the upright position. If the float switch is not operating, the dishwasher may think that it is full of water, even when it is empty.
LG Dishwasher Detergent Door Not Closing
Generally speaking, the LG dishwasher detergent door isn’t operating properly because it is clogged with small food particles or undissolved soap.
Carefully clean around the dishwasher detergent door using a soft rag with a little soap and water. Food particles may become lodged in areas that are difficult to remove.
It is also important to use the proper detergent when operating your LG dishwasher. Using the wrong type of detergent can cause issues that would require you to clean the dispenser or perhaps even replace it.
An issue that may occur is for too much dishwashing detergent to be used. Perhaps it is being measured improperly or you are using an extra-large detergent pod.
Make sure that you are using the proper amount and type of detergent.
If all else fails, replace the dispenser.
LG Dishwasher Chime Not Working
The chimes on your LG dishwasher are there to alert you to problems. They can also be turned on or off using the control panel.
At times, you may have inadvertently turned off the chimes so it is just a matter of turning them back on. In most LG models, you word press the half load button and hold it down for at least three seconds.
You can turn the chimes on and off in this way and it is a good idea, especially if you run the dishwasher at night. The chimes may disturb your sleep so they can be turned off.
One other specific issue is for the chime at the end of the cycle not to sound any longer. It may not affect the cleanliness of the dishes or the operation of the machine, but some people may miss it.
A problem with the chime not sounding at the end of the cycle is associated with a failure of the cycle timer. The timer can be replaced if necessary.
LG Dishwasher Buttons Not Responding
If your LG dishwasher buttons are not responding, it may or may not be a problem. At times, the dishwasher may work fine but the buttons are simply no longer beeping.
There may be times when the dishwasher buttons not responding can be traced to the touchpad buttons. If some of them work and some of them don’t, it is usually an issue with the control panel.
The control panel of the LG dishwasher is sometimes attached to the touchpad, so both the control panel and touchpad will need to be replaced at the same time.
If that doesn’t work, you may need to consider the possibility that the control board needs replaced. The control board operates the entire dishwasher, including the buttons.
LG Dishwasher Not Cleaning Bottom Rack
Generally speaking, the lower spray arms not working are associated with the dishwasher not cleaning the bottom rack. Those spray arms may become clogged with debris or they could get damaged over the course of time.
In many cases, removing the lower spray arm and cleaning it thoroughly will help to make the dishwasher clean better. You can also replace the spray arm easily, and that will sometimes make your dishwasher clean like new.
Other issues may also be possible that could keep the bottom rack from cleaning properly. This could include not loading the dishes properly.
A blocked filter, which could cause the dishwasher not to drain the water properly can keep the dishwasher from cleaning the bottom rack properly as well.
Clean the filter regularly and also check the food chopper and the entire interior of the dishwasher. Set up a regular cleaning schedule and it will clean your dishes like brand-new.
LG Dishwasher Not Cleaning Top Rack
Similar to the lower rack, the top rack is also cleaned by a spray arm. If the upper spray arm is clogged or broken, it will not spray water on the dishes in the upper rack.
A broken spray arm seal may also be to blame. This would keep the pressure from building up properly and coming out with enough force to clean the dishes.
Similar issues may also be associated with low water pressure. This could either be due to a kinked water hose, clogged filters, or perhaps an issue with the water pressure at your home.
As a final measure to help the dishwasher clean the top rack properly, be sure that the food chopper is clean.
LG Dishwasher Not Closing/Latching/Locking
If an LG dishwasher door is not closing, the dishwasher is not going to operate. In most cases, there is something blocking the door, either around the edges or perhaps at the lower hinge area.
If the hinge is blocked, even by a small piece of debris, it may not allow the dishwasher door to close. The dishwasher hinge may also be damaged, so the door will not close entirely.
If it seems as if the door is closing but it is not latching properly, then either the door latch or the strike plate may need to be replaced.
If the door is being held closed by the latch but you are still having problems, consider the possibility that the door switch is faulty. Your dishwasher will think the door is open, even if it is closed.
LG Dishwasher Not Completing Cycle
A short in the thermal fuse is often what causes the cycle to not complete. The thermal fuse keeps the dishwasher from getting too hot so if it shorts out, it cuts the power to your dishwasher.
Something similar may happen if your door latch or switch is not operating properly. Once the dishwasher thinks the door is open, it will shut off the power.
Loose wires can also cause a similar problem.
If you are having a problem with your dishwasher not completing a cycle, perform a hard reset by shutting the power off to the dishwasher for up to five minutes. This can be done by unplugging the dishwasher or switching off the circuit breaker.
LG Dishwasher Not Spinning
If the spray arms inside of your LG dishwasher are no longer spinning, it may be due to debris stuck in the spray arm or there not being enough water pressure.
With the dishwasher off, reach inside and try to spin the spray arms manually. You can remove the spray arm and wash it at the sink as well.
LG Dishwasher Not Turning Off
If your dishwasher is continually running and not shutting off, either unplug it or turn it off at the breaker until it is repaired.
You may need to remove the water manually with a cup or small bowl.
The issues with the dishwasher not shutting off can often be traced to the float valve. If it is stuck in position, the dishwasher may think that it is empty, even if it is full of water.
You can also check the wiring connections as they may have become fused.
The most common problems that lead to an LG dishwasher not operating are either a tripped circuit breaker or a door latch that has broken. Once you restore the power to the dishwasher, it will start running again.