WD-12586BD - LG Washing Machine Service Manual (repair manual). Page 14

7. TROUBLESHOOTING

7-1. BEFORE PERFORMING SERVICE

■ Be careful of electric shock when disconnecting parts while troubleshooting.
■ The voltage of each terminal is 120-127 V AC and DC when the unit is plugged in.

7-2. QC TEST MODE.

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

1. Press the SPIN SPEED and SOIL LEVEL 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.

4.                       Alternate blinking of                      and

7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY

Press the Delay and Beeper button simultaneously.

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

=  24.1 kHz

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

Check Point

Display Status

None

Turns on all lamps and locks the door.

1 time

Tumble clockwise.

rpm (40~50)

2 times

Low speed Spin.

rpm

3 times

High speed Spin.

rpm

4 times

Inlet valve for prewash turns on.

Water level frequency (25~65)

5 times

Inlet valve for main wash turns on.

Water level frequency (25~65)

6 times

Inlet valve for hot water turns on.

Water level frequency (25~65)

7 times

Inlet valve for bleach turns on.

Water level frequency (25~65)

8 times

Tumble counterclockwise.

rpm (40~50)

9 times

Water temperature (Thermistor)

Water temperature [°C]

10 times

Drain pump turns on.

Water level frequency (25~65)

11 times

Power off and unlock the door.

Turn off all lamps.

Number of times the

Start/Pause button is pressed