WM3360HRCA - LG Washing Machine Service Manual (repair manual). Page 16

5-3. SPECIAL FUNCTIONS

The option buttons also activate special functions, including CHILD LOCK, DRUM LIGHT, FRESH CARE, and
LANGUAGE. Press and hold the option button marked with the special function for 3 seconds to activate.

Use this option to prevent unwanted use of the washer or to keep cycle settings from
being changed while the washer is operating. Press and hold the PREWASH button for
3 seconds to activate or deactivate the child lock function.

The child lock indicator will be shown in the display, and all buttons are disabled except
the ON/OFF button.

NOTE: CHILD LOCK lasts after the end of cycle. If you want to deactivate this function,
Press and hold the STAIN CARE button for 3 seconds. 

A buildup of detergent residue can occur in the wash tub over time and can lead to a
mildewy or musty smell. The TUB CLEAN cycle is specially designed to remove this
buildup. After the cycle has ended, safely and conveniently secure the door slightly ajar
with a magnetic door plunger to keep the door open. This will promote air circulation and
allow the interior of the machine to dry. 

NOTE: Do NOT use this cycle with clothes, and do NOT add detergent or fabric
softener.

NOTE: If you use the TUB CLEAN cycle on a monthly basis, the wash drum will be kept
clean.