WD-12120FB - LG Washing Machine Service Manual (repair manual). Page 14

7-1. BEFORE PERFORMING SERVICE

■ Be careful of electric shock or disconnecting the parts while troubleshooting.
■ Voltage of each terminal in 220-240V~ and DC while applying an electric current.

7-2. QC TEST MODE.

① Pressing Spin, and Temp button simultaneously.
② Power supply ON with pressing upper two button. then buzzer sound twice.
③ Press the START/PAUSE button as follows.

~Press the START/PAUSE button more 4 times until stop spinning₩

7-3. HOW TO KNOW THE WATER LEVEL FREQUENCY

Press the Option and Spin button simultaneously.

ex) 241 : Water level frequency = 241

× 10-1㎑

=24.1

㎑

7. TROUBLESHOOTING

The digits means water level frequency (10

-1 

㎑

) 

Pressing number of

［START/PAUSE］button

Checking Point

Display Status

None

All lamps turn on

1 time

Clockwise spin (right)

Motor rpm (About 45)

2 times

Low speed spin

Motor rpm (About 63~67)

3 times

High speed spin

Motor rpm (About 100~106) : WD-10120FB

Motor rpm (About 107~103) : WD-11120F/11125FB

Motor rpm (About 114~120) : WD-12120FB/WD-12125FB

Motor rpm (About 122~127) : WD-13120FB/WD-13125FB

4 times

Inlet valve for pre-wash operation

Water level frequency (25~65)

5 times

Inlet valve for main-wash operation

Water level frequency (25~65)

Hot inlet valve in case of hot water fill

6 times

Inlet valve for main-wash operation 

Water level frequency (25~65)

7 times

Counterclockwise spin (left)

Motor rpm (About 45)

8 times

A heater is in operation for 3 sec.

Water temperature

9 times

Draining pump operation

Water level frequency

10 times

Auto off operation