LG WM3055CW Service Manual ▷ View online
28
LOCKED MOTOR ERROR
Is displayed?
Check the connectors at the
main PCB and the main
motor. Are the connectors
loose or disconnected?
Main PCB connectors RD3
and NA4
Motor connectors to stator and
hall sensor
main PCB and the main
motor. Are the connectors
loose or disconnected?
Main PCB connectors RD3
and NA4
Motor connectors to stator and
hall sensor
Reconnect
the connector.
(connector /
wire / motor )
the connector.
(connector /
wire / motor )
Replace
the ROTOR.
the ROTOR.
Yes
Yes
Motor Drive
Is rotor magnet cracked?
Magnet
Hall sensor
Motor Drive Hall Sensor
- part of wire
- part of motor
Motor
Yes
Yes
Yes
Replace
the STATOR.
the STATOR.
Check the resistance of the
stator winding from the main
PCB connector RD3. Is the
resistance between each
pair or wires between 5 and
15 ? (Measure pins 1-2, 1-3
and 2-3.)
stator winding from the main
PCB connector RD3. Is the
resistance between each
pair or wires between 5 and
15 ? (Measure pins 1-2, 1-3
and 2-3.)
No
Replace
the Hall
sensor.
the Hall
sensor.
Is hall sensor out of
order?
order?
(Refer to 9-3
Stator assembly/Hall
sensor.)
sensor.)
Yes
No
Replace the
MAIN PWB
ASSEMBLY.
MAIN PWB
ASSEMBLY.
Check the IPM in the
controller.
controller.
No
Y`
DOOR OPEN ERROR
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30
UNBALANCE ERROR
OVER FLOW ERROR
[Note] Environmental check list
1) Removal of transportation-based fixed bolt.
2) Confirmation on the material to see if it is capable
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.
Is displayed?
Yes
Does the laundry lean
toward one side, not evenly
put in the DRUM assembly?
toward one side, not evenly
put in the DRUM assembly?
Put laundry
evenly
In the DRUM
assembly
evenly
In the DRUM
assembly
Yes
Is the washing machine
installed at an angle?
installed at an angle?
Adjust the
height of
washing
machine
to be kept
horizontally
height of
washing
machine
to be kept
horizontally
Yes
No
Is displayed?
Yes
While a cycle is running,
press the WASH/RINSE and
DELAY START buttons
together to display the water
level. Is the water level
>213?
press the WASH/RINSE and
DELAY START buttons
together to display the water
level. Is the water level
>213?
(Refer to 7-3)
Check the AIR
CHAMBER
and the tube
(clogged).
CHAMBER
and the tube
(clogged).
No
Unplug the washer. Does
the water valve remain on
when the power is removed
from the washer?
the water valve remain on
when the power is removed
from the washer?
Replace the
INLET VALVE ASSEMBLY
INLET VALVE ASSEMBLY
If the water
valve is
energized as
soon as the
washer is
plugged in or
when the power
button is
pressed, replace
the main PCB.
valve is
energized as
soon as the
washer is
plugged in or
when the power
button is
pressed, replace
the main PCB.
No
Yes
Yes
31
PRESSURE SENSOR ERROR
Is displayed?
Yes
Check the connectors at the
main PCB and the pressure
switch. Are the connectors
loose or disconnected?
main PCB and the pressure
switch. Are the connectors
loose or disconnected?
Reconnect or
repair
the connector
repair
the connector
No
Yes
Yes
Measure the resistance
between pins 1 and 3 of the
pressure switch. Is the
resistance between 211
and 231 ?
between pins 1 and 3 of the
pressure switch. Is the
resistance between 211
and 231 ?
Replace the
pressure
switch
pressure
switch
No
No
Is the AIR CHAMBER and
the tube clogged?
the tube clogged?
Replace the MAIN PWB
assembly.
assembly.
Fix the air
chamber
and remove
the foreign
material.
chamber
and remove
the foreign
material.
Yes
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