Test Running Without Water - LG WT7800C Series 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) SERVICE MODE
The washer must be empty and the controls must be plugged in and turned off.
• Press the POWER button: then press and hold the Temp. and Soil buttons. The buzzer will sound twice.
• Press the Start/Pause button to advane to the subsequent test mode step.
Number of times the
START/PAUSE
button is pressed
None Main program version
1 time Display program version
2 time None
3 time Inlet valve for detergent turns on.(Cold Water)
4 time Inlet valve for detergent turns on.(Hot Water)
5 time Inlet valve for softener turns on.(Cold Water)
6 time Inlet valve for jet spray turns on.(Cold Water)
7 time Inlet valve for bleach turns on.(Cold Water)
8 time Heater check (on heater model)
9 time Drain pump check
10 time Load sensing check
11 time Agitate (tub) check and Door Lock check
12 time Spin check
Off
13 time Unlocks the door
Turns off all LED
Check Point
30
Display Status
t1 and main program version
t2 and display program version
t3
A and water level frequency(268 ~ 233)
b and water level frequency(268 ~ 233)
C and water level frequency(268 ~ 233)
d and water level frequency(268 ~ 233)
E and water level frequency(268 ~ 233)
t4 and the coefficient of flood sensing
t6 and water level frequency(268 ~ 233)
t7 and the coefficient of load sensing
t8 and RPM
t9 and RPM
None
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