WM2050CW - LG Washing Machine Service Manual (repair manual). Page 16

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15
5-4. EXPLANATION OF EACH PROCESS
No.
Process
Explanation
1.
Stay
• Electrical power is supplied
• W
asher is ready to work and the micom is in the active mode.
2.
Water
supply
After loading laundry and selecting a course and a cycle, water is
supplied and drum rotates.
When a user selects Pre-wash course, water is supplied through pre
wash valve.
3.
Soaking
& washing
laundry
• T
o get laundry wet, drum rotates clockwise and counterclockwise.
If water amount is insufficient at this time, the Inlet valve will supply
water again. 
4.
W
ashing
• Fuzzy Logic decides washing time according to the laundry load, water
temperature, and other factors.
5.
Drainage
• A pump motor drains the water from the drum.
• After sensing drained water amount by water level frequency, spin starts.
When a course is selected, stay cooling process is performed to
decrease the water temperature gradually to prevent laundry from being
damaged and for safety reasons.
6.
Untangling
(Sensing
eccent-
ricity)
It balances laundry load and senses the eccentricity of the load, to only
allow spinning  without vibration 
If the eccentricity is worse than the allowed level, it repeats the
disentangling process. When the repeated time is more than allowed
level, it displays UE.
If the eccentricity is good, the intermittent spin starts.
During this process, the drain pump works for drainage intermittently.
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