WM-128NW - LG Washing Machine Service Manual (repair manual). Page 19

Before servicing ask the customer what the trouble is.
Check the adjustments. (Power supply :220-240V~, Removal of transit bolts etc..)
Check the troubles referring to the troubleshooting.
Decide service steps referring to disassembly instructions.
Then, service and repair.
After servicing, operate the appliance to see whether it works OK or NOT.

7. TROUBLESHOOTING

7-1. Checking before SVC

7-2. LOAD TEST MODE

1 Press and Hold ‘

Temp

’ & ‘

Spin

’ buttons

and then press ‘

Power

’ button.

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

3 Press Power with above two buttons pressed and then buzzer will sound.

4 Press the Start/Pause button repeatedly to cycle through the test modes

1

2

3

4
5
6

None 

1 time 

2 times 

3 times 

4 times 

5 times 

6 times 

7 times 

9 times 

10 times 

11 times 

12 times 

13 times 

14 times 

15 times 

Turns on all lamps and locks the door.

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.

Tumble counterclockwise.

Heater turns on for 3 sec.

Circulation pump turns on.

Drain pump turns on.

Water level Sensor for Steam

Steam Heater turns on for 1.2 sec.

Off

rpm (42~50)

rpm (55~65)

rpm (125~155)

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

-

Number of times the

Start/Pause button is pressed

Check Point

Display Status