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HomeRepair HelpLG Dishwasher RepairLG Dishwasher takes too long Repair
LG Dishwasher takes too long
If your LG dishwasher takes too long, the problem is often tied to weak water circulation that leaves the dishwasher not washing properly while the cycle drags on. The most likely cause is a damaged wash impeller, which may not create enough pressure to push water through the wash arms. Next, check the filter assembly, filter, screen filter, and strainer in the sump. When these parts are clogged with food debris, water flow drops, wash performance suffers, and you can end up with dishes still dirty after the dishwasher cycle. A failing circulation pump is another common cause, especially if the motor is silent or only makes a humming sound after the unit fills. On some models, you can replace the wash impeller by itself, but others require a full pump and motor assembly. Cleaning or replacing clogged sump filters can also restore normal performance. To find the exact LG dishwasher part for your machine, enter your model number on RepairClinic.com and match the right wash impeller, circulation pump, filter assembly, screen filter, or strainer to your specific dishwasher.
01 - LG Dishwasher Wash Impeller
The wash impeller is a small plastic blade that forces water up through the wash arms. If the impeller is broken or is missing some of its fins, it might not generate enough pressure to force the water up through the wash arms. On most models, you can replace the wash impeller independently of the pump and motor assembly. Search for your model number to determine if your impeller is replaceable. If the impeller cannot be replaced separately, you will have to replace the entire pump and motor assembly.
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Highly Likely
02 - LG Dishwasher Filter Assembly
A dishwasher's filter assembly usually consists of both a course and a fine filter located in the sump. If one or both of these filters is clogged, you will get low water flow and poor washability. If the filters cannot be cleaned effectively or if they are damaged, they will need to be replaced.
Highly Likely
03 - LG Dishwasher Filter
A dishwasher's filter assembly usually consists of both a course and a fine filter located in the sump. If one or both of these filters is clogged, you will get low water flow and poor washability. If the filters cannot be cleaned effectively or if they are damaged, they will need to be replaced.
Highly Likely
04 - LG Dishwasher Screen Filter
A dishwasher will usually have both a course and a fine screen filter located in the sump. If one or both of these filters is clogged, you will get low water flow and poor washability. If the filters cannot be cleaned effectively or if they are damaged, they will need to be replaced.
Highly Likely
05 - LG Dishwasher Strainer
Dishwashers will use a strainer located in the sump to catch food particles. If the strainer is clogged, you will get low water flow and poor washability. If the stainer cannot be cleaned effectively or is damaged, it will need to be replaced.
Highly Likely
06 - LG Dishwasher Circulation Pump
The circulation pump uses a motor and impeller to force water up through the wash arms. If the circulation pump is defective, the dishes won’t be cleaned properly. If the motor isn’t making any noise or is just making a humming sound after the dishwasher has filled, the motor may be burned out. First, ensure that power is getting to the motor. Second, to ensure that the impeller can turn, check the pump housing for debris. If power is getting to the motor and the pump is clear of debris, the motor might need to be replaced. Be aware that the circulation pump may be challenging to replace, although many do-it-yourselfers ha...
Common
Frequently Asked Questions
Why does my LG dishwasher take too long to finish a cycle?
Can a clogged filter make an LG dishwasher run for hours?
How do I know if the wash impeller is causing my LG dishwasher to not wash properly or take too long?
What does it mean if my LG dishwasher fills but just hums and the cycle takes too long?
How do I find the right LG dishwasher part for a long cycle problem?
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