Troubleshooting; Before Performing Service; Qc Test Mode; How To Check The Water Level Frequency - LG WM3431H Series Service Manual

7. TROUBLE SHOOTING

7-1. BEFORE PERFORMING SERVICE

Be careful of electric shock when disconnecting parts while troubleshooting.
The voltage of each terminal is 110/120 V AC and DC when the unit is plugged in.

7-2. QC TEST MODE.

The washer must be empty and the controls must be in the off state.
1. Press the Wash/Rinse and Spin Speed buttons simultaneously.
2. Press the Power
3. Press the Start/Pause
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

7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY

Press the Wash/Rinse and Spin Speed button simultaneously.
So, for example a display indicating 241: a Water level frequency of 241 x.1 kHz
button, while the above condition. Then buzzer will sound twice.
button repeatedly to cycle through the test modes.
Check Point
Turns on all lamps and locks the door.
Tumble clockwise.
Low speed Spin.
High speed Spin.
Inlet valve for bleach turns on.
Inlet valve for main wash turns on.
Inlet valve for hot water turns on.
Inlet valve for dry turns on.
Tumble counterclockwise.
Heater turns on for 3 sec.
Drain pump turns on.
Dry operation for 6 minutes.
Power off and unlock the door.
The digits indicate the water level frequency ( x.1 kHz ).
rpm (40~50)
rpm
rpm
Water level frequency (25~65)
Water level frequency (25~65)
Water level frequency (25~65)
Water level frequency (25~65)
rpm (40~50)
Water temperature
Water level frequency (25~65)
Temperature in Dry duct.
Turn off all lamps.
= 24.1 kHz
13
Display Status