LG WM1873FDS Service Manual ▷ View online
25
FOR AUTHORIZED SERVICE TECHNICIAN
LOCKED MOTOR ERROR
Check the connectors below.
Is the connector disconnected
or disassembled?
(motor hall sensor connector,
motor drive connector.)
- part of main PWB
assembly (NA1, RD4)
Reconnect
the connector.
(connector /
wire / motor )
Replace
the ROTOR.
Yes
Yes
Motor Drive
Is rotor magnet cracked?
Hall sensor
Motor Drive Hall Sensor
- part of wire
- part of motor
Motor
Yes
No
Yes
Yes
Magnet
Replace
the STATOR.
Is the resistance values
in the range of 5 to 15 Ω?
(U-V, V-W, W-V
:U=1, V=2, W=3)
- After pull out the RD4
connector, check the
terminal of the connector
in wire. (Red 3P, male)
No
Replace
the Hall
sensor.
Is hall sensor out of
order?
(Refer to 9-3
Stator assembly/Hall
sensor.)
Yes
No
Replace the
MAIN PWB
ASSEMBLY.
Check the IPM in the
controller.
No
Is
LE ERROR
displayed?
26
FOR AUTHORIZED SERVICE TECHNICIAN
DOOR OPEN ERROR
Yes
Is the connector connected
to door switch or main PWB
disconnected?
Reconnect or
repair
the connector.
Yes
No
Is there clicking sound once
or twice when the
START/PAUSE button is
pressed to start the cycle?
Replace the
PCB
ASSEMBLY.
No
Is DOOR SWITCH
ASSEMBLY broken?
Replace the
DOOR
SWITCH
ASSEMBLY.
No
Yes
Does the spring of Latch
Hook actuate?
Replace
Door
Assembly.
Yes
No
[Note] Environmental check list
1) The machine must operate with all the doors
completely closed and locked.
2) The washing area must operate with a water
temperature not higher than 45 Celsius and
must not have more amount of supplied water
than it should.
Is
dE1, dE2 ERROR
displayed?
27
FOR AUTHORIZED SERVICE TECHNICIAN
UNBALANCE ERROR
OVER FLOW ERROR
[Note] Installation check list
WASH/RINSE
DELAY WASH
28
FOR AUTHORIZED SERVICE TECHNICIAN
PRESSURE SENSOR ERROR
Yes
Is the connector connected
to pressure sensor
disconnected or
disassembled?
Reconnect or
repair
the connector.
No
No
Yes
Is the resistance of the
pressure sensor out of
range?
(pin 1~ pin 3)
(21~23 Ω ±10%)
Replace the
pressure
switch.
No
Yes
Is the AIR CHAMBER and
the tube clogged?
Replace the MAIN PWB
assembly.
Fix the air
chamber
and remove
the foreign
material.
Yes
Is
PE ERROR
displayed?
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