Explanation Of Each Process - LG WM2901H*A Series Service Manual

5-4. Explanation of each process

No. Process
1. Stay
2. Water
supply
3. Soaking
& washing
laundry
4. Heating &
washing
5. Washing
~ & heating
6. / washing
7. Washing
8. Drainage
9. Untangling
(Sensing
eccent-
ricity)
• Electrical power is supplied.
• Washer is ready to work and the micom is in the active mode.
• 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.
• To get laundry wet, drum rotates clockwise and counterclockwise.
• If water amount is insufficient at this time, the Inlet valve will supply
water again.
• The heater heats the water in drum to the selected water temperature
and drum rotates for washing.
• When the water temperature reaches to the selected temperature,
the heating stops and only the drum rotates.
• If water temperature becomes lower than selected because of
re-supplied water, the heating starts again.
• Fuzzy Logic decides washing time according to the laundry load, water
temperature, and other factors.
• A pump motor drains the water from the drum.
• After sensing drained water amount by water level frequency, spin starts.
• When a heating course is selected, stay cooling process is performed to
decrease the water temperature gradually to prevent laundry from being
damaged and for safety reasons.
• 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.
Explanation
18