WM-1312SCM - LG Washing Machine Service Manual (repair manual). Page 13

7. TROUBLE SHOOTING

7-1.BEFORE SVC CHECKING

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

7-2.QC TEST MODE.

①

① Pressing  Rinse, and Temp. button simultaneously.
②

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

③ Press the Start/Pause button as follows.

7-3.HOW TO KNOW THE WATER LEVEL FREQUENCY

Press the Rinse and Temp. button simultaneously.

ex) 241 : Water level frequency = 241

× 10

-1

kHz

=24.1 kHz

7-4.HOW TO KNOW TO TEMPERATURE OF EACH THERMISTOR

AT OPERATING CONDITION.

■ Thermistor in tub : Press the [Temp.] button.
■ Thermistor in dry duct : Press the [Turbo Steam] button.

The digits means water level frequency(10

-1

kHz) 

Number of times the

Start/Pause button is pressed

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 (110~120)

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 water turns on.

Water level frequency (25~65)

8 times

Inlet valve for dry water turns on.

Water level frequency (25~65)

9 times

Tumble counterclockwise

rpm (42~50)

10 times

Wash 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

Dry heater turns on for 3 sec.

Water temperature

14 times

Water level Sensor for Steam

Water level frequency of TSG (0~255)

15 times

Steam Heater turns on for 1,2 sec.

TSG temperature

16 times

Power off and unlock the door.

Turn off all lamps.