LG WFT9561DD Service Manual ▷ View online
44
Is the coil of the drain
pump too high or low?
(resistance of the coil
is 10-20 Ω)
(Refer to 9-4 Pump motor
assembly)
Replace the
DRAIN
PUMP
ASSEMBLY.
Is the voltage between
connectors out of range?
(CN5 pin5)
- After remove Terminal
Position Assurance (TPA)
of connector, check as follows.
Replace the
MAIN PWB
ASSEMBLY.
Is displayed?
Yes
No
No
Yes
Yes
DRAIN ERROR
- Pump running : 220V±5%
- Stopped Motor/Pump : 0~1V
Method
1. Press the Power button, while the SPIN SPEED
button and SOIL LEVEL button is pressed
simultaneously.
2.Press Start/Pause button
: 1 time Pump slow-speed running
: 2 times Pump mid-speed running
: 3 times Pump high-speed running
: 4 times Stop the Motor/Pump
When you press both
Water level button and
Spin button
simultaneously, is the
water level frequency
below 26.0 kHz?
Check the AIR
CHAMBER
,the tube
(clogged),
and press
switch
Yes
No
Yes
Drain pump
Connection connector
Is the connector connected
to pump motor assembly
disconnected or
disassembled?
Reconnect or
repair
the connector
[Note] Environmental check list
1) The drainage hose must not stay in a lower position
2) The drainage hose must not be bent or
clogged in any way due to the surrounding
physical configuration
3) The drainage hose must not get frozen at all times.
4) The drainage pump must not have any improper
substance or material inside that may cause
a machine breakdown
a machine breakdown
.
45
4-9-1 TROUBLESHOOTING WITH ERROR
Is displayed?
Replace
the ROTOR
the ROTOR
Check the connectors below.
Is the connector disconnected
or disassembled?
Is the connector disconnected
or disassembled?
(motor hall sensor connector,
motor drive connector)
- part of main PWB
- part of main PWB
assembly (YL3,NA1)
Is rotor magnet cracked?
Is the resistance values
in the range of 5 to15 Ω?
(U-V, V-W, W-V
in the range of 5 to15 Ω?
(U-V, V-W, W-V
:U=1, V=2, W=3)
- After pull out the YL3
connector, check the
terminal of the connector
in wire. (Red 3P, male)
terminal of the connector
in wire. (Red 3P, male)
Is hall sensor out of
order ?
order ?
(Refer to 9-3
Stator assembly/Hall
sensor)
sensor)
Check the IPM in the
controller
controller
Replace
the Hall
sensor
the Hall
sensor
Replace the
MAIN PWB
ASSEMBLY
MAIN PWB
ASSEMBLY
LOCKED MOTOR ERROR
Yes
Yes
Hall sensor
Yes
No
Motor
Yes
Magnet
No
Yes
Replace
the STATOR
the STATOR
Yes
No
No
- part of wire
Motor Drive
- part of motor
Reconnect
the connector
(connector /
wire / motor )
Motor Drive Hall Sensor
46
4-9-1 TROUBLESHOOTING WITH ERROR
Is displayed?
No
Yes
Yes
Yes
UNBALANCE ERROR
When you press both
Water
level button and Spin button
simultaneously, is the water
level frequency over
21.3kHz?
(Refer to 7-4)
Check the AIR
CHAMBER
and the tube
(clogged).
Replace the
INLET VALVE ASSEMBLY
Is displayed?
Yes
No
Yes
No
Yes
OVER FLOW ERROR
Does the laundry lean
toward one side, not evenly
put in the DRUM assembly?
Put laundry
evenly
In the DRUM
assembly
Is the washing machine
installed at an angle?
Adjust the
height of
washing
machine
to be kept
horizontally
[Note] Environmental check list
1) Removal of transportation-based fixed bolt
2) Confirmation on the material to see if it is capable
of handling two different types of blanket materials
Does the inlet valve work
when the power is not
applied?
If the inlet
valve work
continuously
when the power
is applied,
Replace the
MAIN PWB
ASSEMBLY
47
4-9-1 TROUBLESHOOTING WITH ERROR
Is the resistance of the
pressure sensor out of
range?
(pin 1~ pin 3)
(21~23 Ω ±10%)
Replace the
pressure
switch
Is the AIR CHAMBER and the
tube clogged?
Fix the air
chamber
and remove
the foreign
material
Is displayed?
No
Yes
Yes
No
Yes
No
Yes
Replace the MAIN PWB
assembly
PRESSURE SENSOR ERROR
Is the connector connected
to pressure sensor
disconnected or
disassembled?
Reconnect or
repair
the connector
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