LG WT1101CW Service Manual ▷ View online
33
ERROR
ERROR DECISION
BASIS
CAUSE FOR ERROR
OCCURRENCE
REMEDY
THERMISTOR
AC, MOTOR
(CLUTCH
MOTOR)
·
Thermistor has a bad
connection or failed
·
AC motor has a bad
connection or failed
·
Clutching is failed
-. Coupling get out of
gear.
-.Coupling is broken.
·
Check the connections at the
Thermistor and at the WHITE
3-pin connector at the main
board
·
Test thermistor to determine it is
not detective
·
Check the connections at the
AC motor and at the WHITE
6-pin connector at the main
board
·
Test AC motor or coupling to
determine it is not detective
·
Reseat the connector.
· Replace the thermistor if
necessary.
·Reseat the connector.
· Replace the AC motor if
necessary.
· Replace the coupling or Clutch
housing if necessary.
34
DRAIN ERROR
Yes
Is OE displayed?
Reconnect or
repair the
connector
No
Is the connector connected to
pump motor assembly
disconnected or
disassembled?
When you enter the SVC
Mode, is the water level
frequency below 26.0 kHz?
Drain pump
Connection connector
Yes
No
Is the coil of the drain pump
too high or low? (resistance of
the coil is 10-20 Ω)
Yes
Check the AIR
CHAMBER, the
tube (clogged),
and press
switch
Yes
Is the voltage between
connectors out of range?
(BL3 pin3)
- After remove Terminal
Position Assurance
of connector, check as follows.
Pump running : 120V±5%
Stopped Motor/Pump : 0~1V
Method
1. Enter the SERVICE Mode.
2. Press START/PAUSE button.
: 1 time Main version
: 2 times Display version
: 3 times Inlet valve check mode
: 4 times Cold valve, bleach valve
: 5 times Rinse valve, hot valve
: 6 times Jet spray valve
: 7 times Heater check
: 8 times Alph check
: 9 times Pump check
[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.
Yes
No
Replace the
DRAIN PUMP
ASSEMBLY.
Replace the
MAIN PCB
ASSEMBLY.
35
LOCKED MOTOR ERROR
Yes
Is LE displayed?
Reconnect
the connector
(connector /
wire / motor )
Check the connectors below.
Is the connector disconnected
or disassembled?
(motor hall sensor connector,
motor drive connector)
- Part of main PCB
assembly (YL3, BL4)
Motor Drive
Hall Sensor
- Part of wire
Yes
No
No
Is rotor magnet cracked?
Is hall sensor out of order ?
Yes
Yes
Check the IPM in the
controller. Is IPM short?
Yes
No
Yes
Is the resistance values
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.
No
Replace the
ROTOR
Replace the
STATOR
Replace the Hall
sensor
Replace the
MAIN PCB
ASSEMBLY
- Part of motor
Motor
Hall Sensor
Hall Sensor
Hall Sensor
Hall Sensor
Hall Sensor
Hall Sensor
Hall Sensor
Hall Sensor
Hall Sensor
Hall Sensor
Hall Sensor
Hall Sensor
Hall Sensor
Hall Sensor
Motor Drive
Motor Drive
Motor Drive
Motor Drive
Motor Drive
Motor Drive
Motor Drive
Motor Drive
Motor Drive
Motor Drive
Motor Drive
Motor Drive
Motor Drive
Motor Drive
Magnet
36
UNBALANCE ERROR
Yes
Is UE displayed?
Put laundry evenly
In the DRUM
assembly
No
Does the laundry lean toward
one side, not evenly put in the
DRUM assembly?
Is the washing machine
installed at an angle?
Yes
Yes
Does the inlet valve work
when the power is not
applied?
Replace the INLET VALVE
ASSEMBLY
No
Adjust the height of
washing machine
to be kept
horizontally
Yes
If the inlet valve
works
continuously when
the power is
applied, replace
the MAIN PCB
ASSEMBLY
OVER FLOW ERROR
Yes
Is FE displayed?
Check the AIR
CHAMBER and the
tube (clogged).
Yes
When you enter the service
mode, is the water level
frequency over 21.0 kHz?
No
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