LG 543864 Service Manual ▷ View online
33
ERROR
ERROR DECISION
BASIS
CAUSE FOR ERROR
OCCURRENCE
REMEDY
PRESSURE
SENSOR
OVER
FLOW
ERROR
MOTOR
ERROR
LID
LOCK
ERROR
·
Pressure switch has a
bad connection or the
switch has failed.
·
Check the connections at the
pressure switch and at the
BLUE 6-pin connector at the
main board.
·
Check the pressure sensor
(21~23Ω ±10%) and
connection
·
Check the valves to be sure
there is no input leakage. Then
check the drain hose and make
sure the drain pipe is between
0.9 ~ 1.2 m (36 and 48 inches)
above the floor.
·
Check for blockages and leaks
in the air hose between the tub
and the pressure switch.
·
Check and repair any air
leakages at the air hose
connector on the outer tub and
at any connecting parts.
·
Check the connections at the hall
sensor and at the BLUE
6-pin connector on the main board.
·
Check the connections at the
stator and at the yellow 3-pin or
BLUE 6-pin connector on the
main board. Test the stator to
determine it is not defective.
·
Test hall sensor to determine it
is not defective.
·
Turn the drum to verify the
bearings are not locked.
·
Check the lid lock SW trying
locking
·
Check the balance of the lid
·
Reseat the connector.
·
Replace the switch.
·
Install the drain hose between
0.9 ~ 1.2 m (36 and 48 inches)
above the floor.
·
Replace pressure sensor
switch
·
Remove the foreign objects
in pressure sensor switch
air hose.
·
Replace the stator if necessary.
·
Replace the hall sensor if
necessary.
·
Replace the bearings if
necessary.
·
If trying, replace the Lid lock
SW or not trying replace the
Main PCB
·
Replace the lid or se the
balance
34
ERROR
ERROR DECISION
BASIS
CAUSE FOR ERROR
OCCURRENCE
REMEDY
THERMISTOR · Thermistor has a bad
connection or failed
·
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
·
Reseat the connector.
· Replace the thermistor if
necessary.
AC, MOTOR
(CLUTCH
MOTOR)
·
AC motor has a bad
connection or failed
·
Clutching is failed
-. Coupling get out of
gear.
-.Coupling is broken.
·
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 AC motor if
necessary.
· Replace the coupling or Clutch
housing if necessary.
MOTOR
·
Check Foreign objects, such as
coins, pins, clips, etc., being
caught between the wash plate
and the inner basket.
· Turn off the washer and then
press the Power button.· Press
the spin speed button without
selecting a cycle to drain and spin
the load.· When the spin is
complete, remove the clothes and
then find and remove any objects
caught in the wash plate.
35
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.
36
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
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