Author Topic: LG dishwasher snoring noise  (Read 3481 times)

Offline daddyfix

  • VIP Member
  • Member Since: Aug 2012
  • Posts: 13
Re: LG dishwasher snoring noise
« Reply #10 on: September 15, 2013, 12:50:47 AM »
The new sump assembly arrived and I have installed it.  Just one question - the old one has a round component 1-1/4 inch diameter next to the little synchronous motor, and there was an electrical connector plugged into it.  The new one does not have this component at all and there is nowhere to plug the connector.  What is this component and is it OK to leave the connector not connected to anything?

Offline john63

  • Technician
  • Member Since: Feb 2010
  • Posts: 508
Re: LG dishwasher snoring noise
« Reply #11 on: September 15, 2013, 09:40:14 AM »
<<<is it OK to leave the connector not connected to anything?>>>

**********

Yes.

The small (low voltage) plug---is for the Turbidity/Soil Sensor.

On the new Sump Assy---the sensor has been relocated to the rear of the Sump Assy (the original sensor is at the front).

Leaving this sensor unplugged---is actually a good thing and will not trigger an error message.

All cycle run times/duration---will be 100%.

The Turbidity/Soil Sensor reduces cycle run time---if it senses that the wash water becomes clear (clean) earlier than expected---but too aggressively---which can negatively affect wash/clean performance.


Offline daddyfix

  • VIP Member
  • Member Since: Aug 2012
  • Posts: 13
Re: LG dishwasher snoring noise
« Reply #12 on: September 25, 2013, 08:30:34 PM »
Thanks john63, I found the Turbidity/Soil Sensor behind the connector for the main wash motor (above the connector when the dishwasher is back on the floor).
I decided to plug it in as I want to save energy and have never had an issue with the wash performance.
I had read elsewhere that for this redesigned sump you have to trim the 2 nylon holders that lock the sump into the bottom of the dishwasher tub.  It seemed like it was necessary, and I did trim them, but I think it was a mistake as I ended up having to shim them to lock the sump.
I have had several loads through the machine and it is working fine.
I'm very happy with everything, thanks to john63 who obviously really knows these machines.
I hope this helps someone else with a similar issue.

Offline john63

  • Technician
  • Member Since: Feb 2010
  • Posts: 508
Re: LG dishwasher snoring noise
« Reply #13 on: September 26, 2013, 12:32:36 AM »
<<<I had read elsewhere that for this redesigned sump you have to trim the 2 nylon holders>>>

**********

Yes---a detail that I had forgotten to mention.

Using a needle-nosed pliers---simply break off the *ears* on the original "Holders" (not the center piece).

Or purchase replacements designed for the newer Sump Assy (4930DD3008A)

Good job:)

Offline daddyfix

  • VIP Member
  • Member Since: Aug 2012
  • Posts: 13
Re: LG dishwasher snoring noise
« Reply #14 on: October 14, 2013, 12:14:45 AM »
Thanks for that, I did trim the ears off with my band saw.
Sorry to ask again, John63, but I spoke too soon, the machine is still not totally right yet.
The machine is working fine, but now I am getting a whistling sound when I used to get that snoring sound.
It happens after the machine has filled, it starts to wash on and off in a cyclical way, and whistles as the wash gets going in each cycle.  What I mean is it seems to start to wash (whistling), then stops washing, then starts to wash again, repeating like this.  Once it stops cycling and starts washing continually there is no whistling.  Then later in the cycle, perhaps in the rinse, it does the same.  Again, once it stops cycling and starts rinsing continually there is no whistling.  Otherwise it is working fine.  The whistling is quite annoying and I would really like to stop it.  Any ideas?

Offline john63

  • Technician
  • Member Since: Feb 2010
  • Posts: 508
Re: LG dishwasher snoring noise
« Reply #15 on: October 14, 2013, 01:52:25 AM »
<<<The machine is working fine, but now I am getting a whistling sound when I used to get that snoring sound.>>>

**********

The SUMP ASSY that you received was built during 2010 or 2011.

During this manufacturing period---a different CHOPPER was used (rather than continuing to use the original).

The reason for the re-designed CHOPPER remains a mystery (for me anyway).

The CHOPPER that is in your Sump Assy is part number (5832DD4001A)---and has sharp points/tips on the ends (like an indian arrowhead). This pointed edge---is the cause of the whistling/rumbling noise.

This has been replaced with the new part number (5832DD4001B).

If you still have the original Sump Assy---that one can be used as well.

To replace:

Remove the upper and lower rack assys.

Lift off (unsnap) the lower wash arm.

Remove the water tower (upper wash arm) from the rear/center of the dishwasher.

Remove all of the Phillips screws from the Sump Filter Cover---and lift off the filter.

Pull off the round white-color "valve" (make sure that the o-ring in still in place).

Remove the phillips screw from the center impeller (this is a *reverse-thread* screw) and pull off the impeller.

Lift the gray plastic chamber from the center of the Sump---and you'll see the stainless steel CHOPPER---replace it.

Re-install the Sump Assy components.

Test dishwasher while inspecting/checking for leaks.

Offline daddyfix

  • VIP Member
  • Member Since: Aug 2012
  • Posts: 13
Re: LG dishwasher snoring noise
« Reply #16 on: October 14, 2013, 04:52:17 PM »
Thank you so much, John63.
Yes I have the chopper from the old sump assembly.
This is what it looks like (picture attached).
Before I switch the choppers, please tell me if this one will be OK.
I really appreciate all your help.

Offline john63

  • Technician
  • Member Since: Feb 2010
  • Posts: 508
Re: LG dishwasher snoring noise
« Reply #17 on: October 14, 2013, 07:26:45 PM »
Yes---the original CHOPPER will work perfect:)

Offline daddyfix

  • VIP Member
  • Member Since: Aug 2012
  • Posts: 13
Re: LG dishwasher snoring noise
« Reply #18 on: October 21, 2013, 05:00:59 PM »
I removed the new chopper from the new sump assembly (picture attached).
I saw that it has a sharp edge while the old one did not.
I installed the old chopper ( side marked up facing up).
Amazing, the whistle is completely gone and the dishwasher seems quieter at all times.
I am very happy with this repair now.
Thanks so much for all the help, John63.
I hope this also helps someone else.

 

Whirlpool Dishwasher Noise during Wash

Started by TechnicianBrian

Replies: 0
Views: 7656
Last post September 02, 2008, 07:31:25 AM
by TechnicianBrian
Kitchenaid Dishwasher making Noise

Started by TechnicianBrian

Replies: 0
Views: 13383
Last post September 30, 2008, 07:16:41 AM
by TechnicianBrian
LG Dishwasher, loud noise on rinse cycle

Started by ZMan

Replies: 1
Views: 8690
Last post December 17, 2008, 09:50:32 PM
by BrntToast
Kitchenaid Dishwasher Making Noise.

Started by TechnicianBrian

Replies: 0
Views: 5043
Last post December 28, 2008, 12:13:42 PM
by TechnicianBrian
Fridgidair Dishwasher Not Cleaning, Crazy Noise

Started by aekdbbop

Replies: 1
Views: 1965
Last post January 10, 2009, 10:02:29 AM
by AJ
Ultra Wash Dishwasher Noise

Started by ronbeld

Replies: 0
Views: 2395
Last post December 31, 2008, 02:56:30 PM
by ronbeld