F1407ADSP - LG Washing Machine Service Manual (repair manual). Page 14

7. TROUBLE SHOOTING

7-1.BEFORE SVC CHECKING

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

7-2.QC TEST MODE.

①

① Pressing Rinse and Steam Wash button simultaneously.
②

② Press the Power        button, while the above condition.
③

③ Press the Start/Pause button as follows. 

Check Point

Display Status

None

Turns on all lamps and locks the door.

1 time

Tumble clockwise.

rpm (42~50)

2 times

Low speed Spin.

rpm (55~65)

3 times

High speed Spin.

rpm (125~155)

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 steam turns on.

Water level frequency (25~65)

8 times

Inlet valve for bleach turns on.

Water level frequency (25~65)

9 times

Tumble counterclockwise.

rpm (42~50)

10 times

Heater turns on for 3 sec.

Water temperature

11 times

Circulation pump turns on.

Water level frequency (25~65)

12 times

Drain pump turns on.

Water level frequency (25~65)

13 times

Water level Sensor for Steam

Water level frequency of TSG(0~255)

14 times

Steam Heater turns on for 1.2 sec.

TSG temperature

15 times

Off

-

Number of times the

Start/Pause button is pressed

7-4.HOW TO KNOW THE WATER LEVEL FREQUENCY

Press the Temp. and Spin button simultaneously.

ex) 241 : Water level frequency = 241

× 10-1kHz

=24.1kHz

The digits means water level frequency (10

-1 

kHz)