Test Operation Without Water - LG WT4801CW Service Manual

4-3. TEST RUNNING WITHOUT WATER
1) SAFETY CAUTION
The main power board assembly has exposed live 120 VAC and live DC voltages. Use care when
disconnecting connectors during troubleshooting and testing. (Wear electrostatic discharge gloves when
handling the board.
Unplug the power when handling the board assembly. (Wear electrostatic discharge gloves when handling the
board. Store the board in an ESD [ElectroStatic Discharge] plastic bag.)
2) QC TEST MODE
The washer must be empty and the controls must be in the off state.
Press and hold the Custom program and cycles buttons; then press the POWER button. The buzzer will sound
twice.
Press the Start/Pause button to advance to the subsequent test mode step.
Number of times the
START/PAUSE
button is pressed
None Turns on all LED
1 time Button Check
2 time None
3 time Inlet valve for Bleach Detergent turns on. (Cold Water)
4 time
Inlet valve for Softener Dispenser turns on. (Hot Water)
5 time Inlet valve for Jet spray turns on. (Cold Water)
6 time Heater check
7 time Wave force check
8 time Drain pump and Agitate check
9 time Load sensing test runs 3 times
10 time High speed spin
Off
11 time . Turns off all LED
Check Pont
On :67~33 (26.7kHz~23.3kHz)
T1 and Main Program Version
T2 and Display Program Version
T3
A and Water level frequency (1~10 Level)
The meaning of 67~33 number is 26.7kHz~23.3kHz really
B and Water level frequency (1~10 Level)
C and Water level frequency (1~10 Level)
T4
T5 and the coefficient of load sensing
T6 and Water level frequency
T7 and the coefficient of load sensing
T8 and RPM
None
24
Display Status