WM3885HCCA - LG Washing Machine Service Manual (repair manual). Page 21

7. TEST MODE

7-1. SAFETY CAUTION

Both 120 volts AC and DC voltages are present on the main board. Be careful to avoid a shock hazard.
Be careful electric shock when disconnecting parts while trouble shooting. (Wear Electro Static
Discharge gloves when working.)

After cutting off the power when changing PWB assembly, disconnect or assemble.

Be careful static when handling PWB assembly, and use electro static discharge plastic pack
when handling or storing the board or other components.

7-2. LOAD TEST MODE

1. Press the SPIN SPEED and SOIL LEVEL buttons simultaneously.

2. Press the Power      button, while the above condition. Then buzzer will sound twice.

4. Press the START/PAUSE

button repeatedly to cycle through the test modes.

None 

1 time 

2 times 

3 times 

4 times 

5 times 

6 times 

7 times 

8 times 

9 times 

10 times 

11 times 

12 times 

13 times 

14 times

15 times

Turns on all lamps.

Tumble clockwise.

Low speed Spin.

High speed Spin.

Inlet valve for prewash turns on.

Inlet valve for main wash turns on.

Inlet valve for Hot water turns on.

Inlet valve for bleach turns on.

Inlet valve for steam turns on.

Tumble counterclockwise.

Heater turns on for 3 seconds.

Circulation pump turns on.

Drain pump turns on.

Steam water level sensor operates.

Steam Heater turns on for 1.2 sec.

off

LOAD TEST MODE

rpm (42~50)

rpm (35~45)

rpm (110~117)

Water level frequency (0~255)

Water level frequency (0~255)

Water level frequency (0~255)

Water level frequency (0~255)

Water level frequency (0~255)

rpm (42~50)

Water temperature

Water level frequency (0~255)

Water level frequency (0~255)

AG tub water level frequency (0~255)

Steam generator temperature

3. Press the STEAM button to load test mode. Without pressing the STEAM button, you

can load demo mode.

The washer must be empty and the controls must be in the off state.