My dishwasher (Model # FDB520RHB0) is not quite 2 years old. We had the water pump replaced a few months ago because it had been making a grinding noise. Then we tried to run it a few days ago and it wouldn't start. It looks like it is not getting any power to it. None of the lights are lighting up and nothing happens when we press the buttons. We have checked the breaker and wall switch and they seem to be fine. We are not having any problems with any other outlets/switches in the house. We pulled the DW out of it's space and nothing seemed to be unplugged. It is hardwired into the house and not plugged in. Any advice?

run white vinegar through the unit to fix

Yes you can but you will need the last few digits in your model number . Off the machine itself .

It is most likely the pump. Silverware or food can get stuck inside.

Hey, consider the float assembly!

We bought this dishwasher and ran it for the last 1 1/2 months and it made a grinding and whistling sound from day one (it's supposed to be nearly silent in its operation). Turns out the drain pump was cutting in while the machine was still filling, thereby emptying the wash tub of any water. Then, when the cycle proceeded to wash, the dumb thing had no water and made a horrible noise. So I had to pitch in at least 2-3 litres of hot water, and then it worked quietly! Had to do this every time there was new water intake.

After working with the repairmen - four visits later, we isolated the float assembly as the problem and they set about replacing the part. Turns out the two parts were markedly different. LG HAD INSTALLED an older model float assembly at the factory and it was the problem. The replacement part was the correct float assembly and things worked perfectly after that - thank goodness. No more babysitting the dishwasher.

Don't let anyone tell you the motor assembly needs replacement. I have seen that cop-out 'fix' all over the web. But use deductive reasoning to find out where the problem is in the cycle, and explore this option first - it's a quicker and cheaper fix than replacing the whole motor assembly.

'Mr. Float' as he is now called works like this:
-expels any residual water in the tub from the last wash
-intakes water for the wash or rinse
-whirs 2-3 times prepping for the cycle
-begins to wash, quietly
-expels at the end of the wash or rinse.

He used to:
-expel residual water
-intake new water for wash or rinse
---drain pump would cut in WHILE still filling
-machine would whir once, realize it didn't have enough water
-perform a brief top-up intake shot
-begin to wash and whistle and GRIND (this is where I would have to add the water)
-expels water from wash or rinse, and start all over again.

It's a good dishwasher and it will work, but the right model parts have to be in place!

Most likely the motor/pump assembly is worn out and grinding. If the machine is less than five years old it is under warranty. If over five years old, the repair part alone is about $150 not including labor.

Before replacing the impeller the technician will test the pump by energizing it. If the problem was not the impeller, then check timer control board and wiring harness.

Enter the model number on one of two websites below to get parts and diagrams for your appliance:


Appliance Parts From PartSelect

Appliance Parts Pros

I do not know of these machines but would say it sounds like bearings related to its rotating arm if it has to deal with water.
It would have a seal at the back before the bearings which has failed so water has leaked onto it causing rust to form in the bearing which builds up fuses the ball bearings together in clumps, make it hard to rotate so you get a grinding noise followed later by squeaks as things deteriorate.
So sadly it needs a service call out or it will grind to a halt, this happens say after a few days of non use letting the rust level build up.
You can use it but at some point it will not be able to rotate and it will just stop with some odd error message if it has that ability. Sorry for the answer.

Hope this helps...........

Hi!!! 10 years is alot for a dishwasher..You could have a plugged drain pump.Check your drain pump.All make sure that the water inside your dish water is hot inside it should read over 100 plus..Good luck..

the circulation pump needs replacing cost around £100 for the part
may be best to buy new machine

the arms are only turned by water coming out of them thro angled jets, they are not electrically driven. the noise will be coming from the circulating pump, probably one of the bearings. no cure except to replace