WD-S15DWD - LG Washing Machine Service Manual (repair manual). Page 14

Be careful of electric shock or disconnecting the parts while trouble shooting.
The voltage of each terminal is 220-240V AC and DC when the unit is plugged in.

7. TROUBLE SHOOTING

7-1.BEFORE SVC SERVICE

7-2. QC TEST MODE.

1. Press the RINSE and SPIN buttons simultaneously.
2. Press the Power       button, while the above condition. Then buzzer will sound twice.
3. Press the Start/Pause       button repeatedly to cycle through the test modes.

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

The digits indicate the water level frequency ( x.1 kHz ).

So, for example a display indicating  241: a Water level frequency of 241 x.1 kHz

=  24.1 kHz

✽ Press the Spin and Rinse button simultaneously.

7-3.HOW TO CHECK THE WATER LEVEL FREQUENCY

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

16 times 

Turns on all lamps and locks the door. 

Dry heater turns on

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 steam turns on.

Inlet valve for dry water turns on.

Tumble counterclockwise

Wash heater turns on for 3 sec.

Circulation pump turns on.

Drain pump turns on

Water level Sensor for steam

Steam Heater turns on

Power off and unlock the door.

water temperature

rpm (42~50)

rpm (55~65)

rpm (110~120)

Water level frequency (25~65)

Water level frequency (25~65)

Water level frequency (25~65)

Water level frequency (25~65)

Water level frequency (25~65)

rpm (42~50)

Water temperature

Water level frequency (25~65) 

Water level frequency (25~65)

Water level frequency of TSG (0~255)

TSG temperature

Turn off all lamps.

number

Check out

Display Status