You might need to wash your washing machine.
Most consumers think they are doing what is *normally* the right thing to do, which is to follow directions on the detergent label. In this rare case--those directions should be entirely disregarded.
Additionally--in many LG washers--the liquid dispenser cup (blue cup) has a "MAX" line on the white siphon cap.
This was a very big *faux pas* on LG's part--this "MAX" line has NOTHING to do with measuring detergent and should never be used as a guide for determining correct detergent amount.
The "MAX" line indicates how much liquid must be in the blue dispenser cup before it DISPENSES from the bottom of the cup.
This is a very,very frustrating mistake that gives owners much grief.
After three months of incorrect type of detergent or incorrect amount of the correct detergent used--musty odor begins to occur.
After more than two years--a significant amount of soap scum/curd has accumulated in the washer. Odor-causing bacteria flourishes on this build-up.
It is imperative to remove this slimy residue. Tide sells a product called "TIDE WASHING MACHINE CLEANER"
which is very effective if used the proper way:
Once a tub has become heavily contaminated--normal methods of performing a TUB CLEAN cycle won't "cut it".
Add the entire packet of "TIDE WASHING MACHINE CLEANER" directly into the tub (no laundry) and close the door.
Press and hold: SPIN SPEED & SOIL LEVEL buttons--then press POWER button.
Wait for door to lock.
Press the START button (6) times--this will fill the tub with hot water to the maximum setting when it stops filling.
Press the START button two more times--this will enable the tub to tumble.
After 3 hours--turn "off" the washer.
Turn the washer back "on".
Select the shortest wash cycle (usually "quick wash") and press "START". This will rinse out the tub.
This method of "TUB CLEAN" is *not* from a service manual but has been the best method for cleaning out LG washers more than a year into incorrect detergent usage.
After this--use the correct amount of "HE" detergent & perform a "TUB CLEAN" cycle every (4) months using the *tub clean* option on the control panel.
Got that? LOL
If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61