Thread Number: 85893  /  Tag: Modern Automatic Washers
Anyone know why LG washers do this? 		[Down to Last]

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Post# 1104489   1/14/2021 at 08:41 (1,191 days old) by mtoronto (Toronto)        

Hello, does anyone know why when LG washers fill with water, the valve opens and closes several times. When the machine starts to fill, it fills for a few seconds, stops, fills for a few seconds, stops, etc. Same with the drain pump, why does it kick in and out? I was told LG machines are the only ones that do this. Anyone know the science behind this?




Post# 1104490 , Reply# 1   1/14/2021 at 08:43 (1,191 days old) by thomasortega (El Pueblo de Nuestra Señora de Los Angeles de Porciúncula)        

During the fill, clean the dispenser...

Post# 1104491 , Reply# 2   1/14/2021 at 08:58 (1,191 days old) by powerfin64 (Yakima, Washington)        

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this is normal operation. All LG's front load washers do it. It's to flush detergent into the tub. This has been discussed before.

Post# 1104513 , Reply# 3   1/14/2021 at 11:50 (1,191 days old) by Golittlesport (California)        

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during the drain/spin it is supposedly to keep the pump clear. when the pump shuts off water accumulates in the sump and then when the pump turns back on there is a forceful gush of water, rather than a continuous dribble.

Post# 1104519 , Reply# 4   1/14/2021 at 13:03 (1,191 days old) by vacerator (Macomb, Michigan)        
Yes,

My Samsung does also. At cycle start fill, it's to slowly add detergent to boost stain removal. Also dilutes remainig detergent, bleach, oxy additive. I notice it only open a bit during rinses after fill to flush out fabric softener. A lot of suds can be left in the pump drain cavity too.

Post# 1104542 , Reply# 5   1/14/2021 at 18:10 (1,191 days old) by Tomdawg (Des moines)        
Older ones were worse

Newer ones do little bit longer and it’s three times.. older ones I think did 4-5 short dribbles back to back.. they were annoying.

Yes. Like others have said, the reason the drain pump turns on and off to allow water to gush out. I don’t think this was mentioned, but it helps clean out the sand/little gunk out as well.

Post# 1104544 , Reply# 6   1/14/2021 at 18:22 (1,191 days old) by imperial70 (MA USA)        

My GE front loader does this also. As well as my past GE front loader. I find the stain removal excellent.

Post# 1104592 , Reply# 7   1/15/2021 at 05:36 (1,190 days old) by retro-man (- boston,ma)        

I have wondered this myself, but I have a top loader with dryer on top combined unit. Frigidaire bought last year. When it starts to fill it will open the cold water valve 5 times then when it fills the tub a third full it switches to hot to fill the tub the remainder of the way and the hot valve opens and closes 5 time till it stay on. What would the reason be behind this? Doesn't do it on the rinse portion of the cycle and it does it on all cycles on the first fill.

Jon



Post# 1104596 , Reply# 8   1/15/2021 at 07:30 (1,190 days old) by lovestowash (St. Petersburg, FL)        
2020 Whirlpool Front Loader

 lovestowash's profile picture
does the same thing...I've wondered why...thanks for the explanation!

Post# 1104612 , Reply# 9   1/15/2021 at 11:47 (1,190 days old) by aeg03 (London, UK)        

In LG's I don't believe the fills burts have anything to do with deteregent as my 2018 LG washing machine does this quite a few times before it then takes the powder from the detergent drawer, starts doing the fill burts thing again and then fills up finally from the detergent section. Feels like its doing it forever. I think it does it at least 7 to 8 times. Its annoying as the pipes in the other side of my flat bang together because of this.

The machine is a 2018 8KG Made In Poland machine. Its great at what it does, other than a rather noisy spin sometimes from the lower suspension leg, Ive seen a few videos on Youtube and noticed some other LG machines here in the UK that are several years old, making the same rattling noise on spinning lighter loads. Most interesting machine I have ever had. The 360 Turbowashes look good.

Post# 1104699 , Reply# 10   1/16/2021 at 00:33 (1,189 days old) by thomasortega (El Pueblo de Nuestra Señora de Los Angeles de Porciúncula)        

This frigidaire sequence is to flush the detergent dispenser.

I know, you're going to say "What dispenser??"

The same PCB is used in electrolux washers in other countries.

Post# 1104715 , Reply# 11   1/16/2021 at 05:20 (1,189 days old) by retro-man (- boston,ma)        

Thank you Thomas for the answer. Now I understand why.

Jon

Post# 1104720 , Reply# 12   1/16/2021 at 07:52 (1,189 days old) by foraloysius (Leeuwarden, Friesland, the Netherlands)        

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I don't know if there is any difference between frontloaders on this side of the pond and on yours, but overhere filling with pauses in between has everything to do with the load sensing. It fill with just enough water to trigger the pressure switch or level switch and as soon as the water level gets lower more water is added. Is that the case here too?

Post# 1104728 , Reply# 13   1/16/2021 at 09:56 (1,189 days old) by henene4 (Heidenheim a.d. Brenz (Germany))        
Europe

 The load sensing by absorbency works the same here and in the US.


LGs and recently Samsungs however have a bit of a different filling scheme.

They first fill through the pre-wash to fill the sump.
Then they start with a couple of maybe 1sec long pulses through the main wash with longer pauses inbetween.

The idea is - as far as I see that - to first "moisten" the detergent and partially flush it in before actually filling continously.

Supposed to help keep the detergent and drawer clean by getting everything flushed in at once.




Haven't noticed much of a difference between the machines that do that and those that don't.

Most plastics today are so well injection molded that their surfaces are pretty non-stick in regards to detergents anyway.

Some detergents - over here especially perl-type detergent like Persil Megaperls - tend to stick basicly no matter what.
Even in Mieles which were the best from my experience.




One big factor I find down here in my hometown with the ridicolous waterhardness is that once limescale builds up on the drawer and tray that the roughness makes sticking more likely.
You can clearly feel a rough patch here and there compared to other less water collecting areas on drawers.

In conjunction with that I found that an overnight soak in something acidic (citric acid, vinegar) takes verry good care of everything on a detergent drawer: detergent residue, softner residue and limescale.
Bleach is really only necessary if there are black mold residues that just won't shift in an acid bath.



Another trick on that topic is that I use if I run several consecutive loads and use powder in any: I tend to just grab one of the items of the load about to be started and just wipe out the used compartments so they are more or less dry.
Reduces sticking significantly and don't need to keep an extra cloth around.

Post# 1104804 , Reply# 14   1/17/2021 at 01:33 (1,188 days old) by thomasortega (El Pueblo de Nuestra Señora de Los Angeles de Porciúncula)        

Maybe I didn't understand very well the main question but I answered considering the "spray sequence" right on the beginning of the fill.

It has absolutely nothing to do with sensing the load because se sequence is irrelevant to any possible load.

In the electrolux case, it's a series of (i don't remember the number exactly) 1x 5 second spray followed by a pause (to drain the liquid dispenser) series of bursts right on the beginning the fill, to agitate any remaining detergent in the dispenser another brief pause to drain the dispenser again and then proceeds with filling. It works very well, specially when I see a washer in a "jackass user" home and the dispenser is clean as new after months of use.

Total is no longer than 20 seconds AFTER the first drop of water falls in the dispenser and it continues with a normal fill until it reaches the first level for sensing.


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