DOWNLOAD LG WM4070HVA / WM4070HWA Service Manual ↓ Size: 8.38 MB | Pages: 57 in PDF or view online for FREE

Model
WM4070HVA WM4070HWA
Pages
57
Size
8.38 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
wm4070hva-wm4070hwa.pdf
Date

LG WM4070HVA / WM4070HWA Service Manual ▷ View online

18
5-4. Explanation of each process
No.
Process
Explanation
1.
Stay
• Electrical power is supplied.
• Washer 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
and washing
laundry
• To get laundry wet, drum rotates clockwise and counterclockwise.
• If water amount is insufficient at this time, the Inlet valve will supply
water again.
4.
Heating and
washing
• The heater heats the water in drum to the selected water temperature
and drum rotates for washing.
5.
6.
Washing
and heating
/ 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.
7.
Washing
• Fuzzy logic decides washing time according to the laundry load, water
temperature, and other factors.
8.
Drainage
• 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.
9.
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.
19
No.
n
o
it
a
n
a
l
p
x
E
s
s
e
c
o
r
P
10
Intermittent
spin
• To reach the correct set speed, the motor rotates clockwise and
counterclockwise directions after spin process starts.
• If the water level frequency is lower than 23.0 kHz,
a washer senses suds and starts suds removal process.
11
Rinse
spin
• In this process, the remaining water during washing process is
extracted and the selected speed is kept.
• Removing suds process is in active mode at this cycle.
12
Remaining
spin
• After spin finishes, the drum rotates by remaining spin power until it
stops. Motor power is off.
• This process is overlapped with next process.
13
Rinse water
supply
• Water supply for rinse process.
14
Rinse
• Rinsing process.
15
Last
drainage
• After spin finishes and power is not supplied to motor, the drum
rotates by remaining spin power.
• If rinse hold is selected, the drainage is not proceeded after rinse
finishes.
16
Disentangling
• The same as item 9.
17
Intermittent spin • The same as item A.
18
19
20
21
22
Main spin1
• The same as item B.
Main spin2
• At the end of a main spin, the spin speed will reach the selected rpm.
Remaining spin • The same with item C.
Disentangling
• After spin finishes, disentangling starts to remove unbalanced
laundry.
End
• After ‘end’ signal is displayed, it stays for 8 seconds and power is
automatically turned off. (Auto type door switch)
• After door switch is off, end signal is displayed in the case of
manual type and it takes around 2 minute to turn off door switch.
20
6. WIRING DIAGRAM / PROGRAM CHART
W
ASH
12
1
2
INLET
 VA
LVE
WH
12
3
4
5
6
12
3
12
3
12
3
4
12
3
4
12
3
4
21
21
21
21
56
1
2
34
56
1
2
34
56
12
3
4
12
3
4
32
1
32
1
12
3
12
3
4
4
MOT
O
R
PRESSURE
 SENSOR
THERMIST
OR
POWER
 CORD
+HOUSING
12
1
UV
W
2
3
3
1
2
123
3
43
432
2
1
1
12
123
3
5
4
543
32
21
1
a
H
b
H
D
N
G
12
1
21
2
12
/
NOISE
FIL
TER
12
3
12
3
32
1
32
1
DOOR LOCK 
4
SOLE
NOID
321
234
5
/
E
S
U
F
E
S
U
F
LMP
12
3
12
3
12
3
12
3
2
1
7. TEST MODE
 SPIN SPEED
SOIL LEVEL
 WASH/RINSE
DELAY WASH
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