LG WM-388CT Service Manual ▷ View online
17
B efore s ervicing as k the cus tomer what the trouble is .
C heck the adjus tments . (P ower s upply : 220V -240V , R emoval of trans it bolts etc..)
C heck the troubles referring to the troubles hooting.
Decide s ervice s teps referring to dis as s embly ins tructions .
T hen, s ervice and repair.
After s ervicing, operate the appliance to s ee whether it works OK or NOT.
7. T R OUB LE S HOOT ING
7-1. B E F OR E S V C C HE C K ING
7-2. LOAD T E S T MODE
1
P res s and Hold ‘
S pin
’ & ‘
T emp.
’ buttons
and then pres s ‘
P ower
’ button.
2
T he was her mus t be empty and the controls mus t be in the off s tate.
3
P res s P ower with above two buttons pres s ed and then buzzer will s ound.
4
P res s the S tart/P aus e button repeatedly to cycle through the tes t modes
1
2
3
4
5
5
6
None
1 time
2 times
3 times
4 times
5 times
6 times
7 times
8 times
9 times
10 times
11 times
12 times
T urns on all lamps and locks the door.
T umble clockwis e.
Low s peed S pin.
High s peed S pin.
Inlet valve for prewas h turns on.
Inlet valve for main was h turns on.
Inlet valve for hot water turns on.
Inlet valve for Dry turns on.
T umble counterclockwis e.
Heater turns on for 3 s ec.
Drain pump turns on.
Dry F an / Dry Heater turn on.
Off
rpm (42~50)
rpm (55~65)
rpm (125~155)
W ater level frequency (25~65)
W ater level frequency (25~65)
W ater level frequency (25~65)
W ater level frequency (25~65)
rpm (42~50)
W ater temperature
W ater level frequency (25~65)
Dry F an 6min. / Dry Heater 5min.
-
Number of times the
S tart/P aus e button is pres s ed
C heck P oint
Dis play S tatus
18
7-3. HOW T O C HE C K T HE WAT E R LE V E L F R E QUE NC Y
7-4. HOW T O K NOW T O T E MP E R AT UR E OF E AC H T HE R MIS T OR
AT OP E R AT ING C ONDIT ION.
T he digits means water level frequency. (10
-1
kHz)
ex) 241 : Water level frequency = 241 x 10
-1
kHz
24.1 kHz
P res s the
P re was h
and
S pin
button s imultaneous ly
.
P res s the
Medic R ins e
and
S pin
button s imultaneous ly .
T hermis tor in tub temperature.
If you press the Start/Pause button in error condition, any error except
will disappear and the
machine will change into the pause status.
In case of
In case of
,
, if the error is not resolved within 15 sec., and in case of other errors,
if the error is not resolved within 4 min., power will be turned off automatically and the error only will be
blinked. But in the case of
blinked. But in the case of
, power will not be turned off.
7-5. ERROR DISPLAY
ERROR
SYMPTOM
CAUSE
WATER
I
NLET
E
RROR
s Not reached to the water level(246) within 8 minutes
after water supplied or not reached to the preset
water level within 25 minutes.
water level within 25 minutes.
Page 20
1
U
NBALANCE
E
RROR
s The appliance is tilted.
s Laundry is gatherd to one side.
s Laundry is gatherd to one side.
Page 21
2
WATER
O
UTLET
E
RROR
s Not fully drained within 10 minutes.
Page 22
3
OVER
F
LOW
E
RROR
s Water is over flowing (over 8 level).
If " " is displayed, the drain pump operates
to drain the water automatically.
Page 24
4
P
RESSURE SENSOR
S/W
E
RROR
s The sensor pressure switch is out of order.
Page 25
5
D
OOR OPEN
E
RROR
s In case of operating the reservation function or the
other function with door opened. Close the door,
then the error display is resolved.
s The door switch is out of order.
Page 26
6
T
HERMISTOR(HEATING)
E
RROR
s The THERMISTOR is out of order.
Page 27
7
MOTOR
L
OCKED
E
RROR
s The connector in the LEAD WIRE ASSEMBLY is
not connected to the connector of STATOR
ASSEMBLY.
Reconnect or repair the connector.
s The hall sensor is out of order/defective.
Replace the STATOR ASSEMBLY
Page 28
8
s Water leaks
Page 36
9
P
OWER
F
AILURE
s The washer ecperienced a power failure
Page 33
10
D
RY
H
EATER
E
RROR
s The Dry Heater is out of order
s The Connector of the Dry Heater is not connected
s The Connector of the Dry Heater is not connected
properly to the connector in the Main PWB ASSEMBLY
s The Dry fan motor is out of order
Page 30
11
19
20
7-6. TROUBLESHOOTING
WITH ERROR
Water Inlet Error (IE)
Is the water tap closed ?
[Note] Environmental safety check list
1. No water tap leakage & freeze.
2. No entanglement of water supply hose.
.
e
g
a
k
a
e
l
e
s
o
h
y
l
p
p
u
s
r
e
t
a
w
o
N
.
4
.
e
g
a
t
r
o
h
s
r
e
t
a
w
o
N
.
3
5. No the inlet filter clogged.
Check the
Water tap
and open it fully .
When there is water in the tub,
is the water level frequency
over 26.2KHz ?
Reconnect or repair the
Connector
.
Or replace the
Harness
.
Replace the
Inlet Valve
.
Is the
Connector
connected correctly to the
Main
PCB
and the
Inlet Valve
?
Or is the
Harness
alright ?
Check the
Air Chamber
and
the Tube
(clogged)
And When you check the water level frequency again,
if it is over 26.2KHz, you
replace
the Pressure switch.
YES
YES
NO
NO
Replace the
Main PCB
.
NO
YES
YES
NO
NO
Is the each resistance of Inlet Valve within
3.5 ~4.5 k ?
When the washing machine is started,
is operated the inlet valve?
1
2
3
Pre. Valve
Main Valve
Dry Valve
1
3
2
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