Test Running Without Water - LG WT7700HVA Service Manual

4-4. 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 Wash Temp. and Soil Level 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 Cold Valve turn on
4 time HOT Valve turn on
5 time Softener turn on
6 time J-spray Dispenser turn on
7 time Bleach valve turn on
8 time Heater check
9 time Drain pump and Door lockWaveforce check
10 time Drain pump and agitate(pulsator) check
11 time Load sensing check
12 time Agitate(pulsator) check
13 time Spin check
Off
14 time Unlocks the door
Turns off all led
Check Point
32
Display Status
T1 and main program version
T2 and display program version
T3
A and waterfrequency
B and waterfrequency
C and waterfrequency
D and waterfrequency
E and waterfrequency
T4 and water temperature
T5 Alpha RPM
T6 waterfrequency
T7 and the coefficient of load sensing
T8 and rpm
RPM
None