8806084066640 - LG Washing Machine Service Manual (repair manual). Page 6

2-5. THE DOOR CAN NOT BE OPENED

While program is operating.
When a power failed and power plug is taken out in operation.
While Door Lock lights turn on.
White the motor is in the process of inertial rotating, through the operation is paused.

2-6. DOOR LOCKED LAMP LIGHTS

When the frequency of water level is lower than 22.9 kHz.

(It can be canceled when the frequency is more than 23.8 kHz.)

When the temperature inside the tub is higher than 45°C and water level is not 25.5 kHz.

(It can be canceled when the water level is 25.5 kHz or the temperature inside the tub is lower than 40°C.)

2-7. CHILD LOCK

Use this option to prevent unwanted use of the washer. Press and hold Pre wash button for 3
seconds to lock/unlock control.
When child lock is set, CHILD LOCK lights and all buttons are disabled except the POWER
button. You can lock the controls of the washer while washing.
CHILD LOCK lasts after the end of cycle. If you want to deactivate this function,
Press and hold the Pre wash button for 3 seconds. 

2-8. WATER CIRCULATION

When washing and rinsing function of shower at the upper part of Gasket.
When washing, it continuously operates for 3 minutes and intermittently.
When rinsing, it continuously operates after completion of water supply.