Test Mode; Safety Caution; Load Test Mode - LG WM3988HWM Service Manual

7. TEST MODE

7-1. SAFETY CAUTION

There's built-in AC 110V and DC power in output terminal of PWB assembly in common. Be careful electric
shock when disconnecting parts while trouble shooting. (Wear Electro Static Discharge gloves when working.)
After cutting off the power when changing PWB assembly, disconnect or assemble.
Be careful static when handling PWB assembly, and use Electro Static Discharge plastic pack when delivering
or keeping it.

7-2. LOAD TEST MODE.

The washer must be empty and the controls must be in the off state.
1. Press the SPIN SPEED and SOIL LEVEL buttons simultaneously.
2. Press the Power
3. Press the Start/Pause
Number of times the
Start/Pause button is pressed
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button, while the above condition. Then buzzer will sound twice.
button repeatedly to cycle through the test modes.
None Turns on all lamps and locks the door.
1 time Tumble clockwise.
2 times Low speed Spin.
3 times High speed Spin.
4 times Inlet valve for prewash turns on.
5 times Inlet valve for main wash turns on.
6 times Inlet valve for hot water turns on.
7 times Inlet valve for steam turns on.
8 times Inlet valve for bleach turns on.
9 times Tumble counterclockwise.
10 times Heater turns on for 3 sec.
11 times Circulation pump turns on.
12 times Drain pump turns on.
13 times Steam Heater turns on for 1.2 sec.
14 times Water level Sensor for Steam
15 times Off
manuals search engine
Check Point
rpm
rpm + Water Level
rpm + Water Temperature
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)
TSG temperature
Water level frequency of TSG (0~255)
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