WFS1558EKD - LG Washing Machine Service Manual (repair manual). Page 26

If scrud is allowed to build-up in the machine it can result in stains on your clothes or unpleasant smell in your washer.
Scrud is the way build-up that can occur within any washer when the fabric softener comes into contact with
Detergent, and according to particular degree of dirtiness or quality of water to be use, in these case, use this
program to clean inner tub and outer tub. 

Press the POWER (AUTO OFF) button to turn power on.

Press the  PROGRAM button to select the TUB CLEAN program.

Press the START/PAUSE button.

Close the lid.

• When the lid is open the machine will not operate,

and an alarm signal will remind you to close the lid.

• Do not use Detergent box.
• Do not place any laundry inside tub.

• Left time is displayed.

After 10 minutes of water supplement. Add the oxygenated bleach (about 300 m ).

• Before using this program remove lint inside lint filter.
• When using this program, do not place any laundry inside tub.
• This program takes about 3 hours to be completed.
• After using this program, remove dirt inside filter.
• After finishing this program, open the lid of wash to remove irritant odor.
• Do not pour bleach into the tub directly. It might cause damage the tub.
• Do not leave diluted oxygenated bleach inside tub for long time.

It rusts the tub must drain the remained diluted oxygenated water out.

• Use this program once for every month. 
• Do not use this program repeatedly.