Trouble Shooting; 7-1.Before Svc Checking; 7-2.Qc Test Mode; 7-3.How To Know The Water Level Frequency - LG WD14750SD Service Manual

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.

Pressing Rinse and Steam Wash button simultaneously.
Press the Power
Press the Start/Pause button as follows.
Number of times the
Start/Pause button is pressed
None
1 time
2 times
3 times
4 times
5 times
6 times
7 times
8 times
9 times
10 times
11 times
12 times
13 times
14 times
15 times
7-4.HOW TO KNOW THE WATER LEVEL FREQUENCY
Press the Temp. and Spin button simultaneously.
ex) 241 : Water level frequency = 241
button, while the above condition.
Check Point
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.
Inlet valve for bleach 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
The digits means water level frequency (10
=24.1kHz
-1 kHz)
10 -1 kHz
13
Display Status
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)
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
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