LG WD-12480N / WD-12480NV / WD-12480TV / WD-12481N / WD-12481NV / WD-12481TV Service Manual ▷ View online
20
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
Wiring diagram
option (HOT)
MAX
max
ABNORMAL SOUND
SOFTENER DOES NOT FLOW IN
Fix the bolt tightly.
Replace the V-belt
(4400FR3116B)
(4400FR3116B)
Replace the motor.
Refer to
NO WATER SUPPLY
Check the wiring on the
dispenser.
dispenser.
Put it in the correct
compartment.
compartment.
Clean the cap and
drawer.
drawer.
Is the pulley bolt loosened?
Is the belt worn?
Is there friction noise from the motor?
Is water supplied?
Are receptacles correctly connected to the
terminals of inlet valve?
terminals of inlet valve?
Is softener put in the correct compartment of
drawer?
drawer?
Is the softner cap clogged?
21
NO
NO
YES
YES
YES
NO
NO
NO
NO
YES
YES
NO
PWB ASSEMBLY
PWB ASSEMBLY
1 2
Replace the sensor
(pressure).
(pressure).
Replace the PWB
Assembly.
Assembly.
Repair drain hose
Remove foreign
material.
material.
Reconnect or repair the
connector
connector
Replace the pump
assembly
assembly
Replace the PWB
Checking voltage between two pins as press
the power button is the voltage 220-240V~?
the power button is the voltage 220-240V~?
Is the drain hose twisted or frozen?
Is the impeller of the drain pump clogged?
Is the connector disconnected,
disassembled?
disassembled?
Is the coil of drain pump cut-off?
(resistance of coil is 90~160
(resistance of coil is 90~160
Ω
)
When checking voltage between connectors
(
(
,
)on spinning, is the voltage
220 - 240V~ as the figure?
When pressing [Spin] and [Temp.] at the
same time after draining, is the water level
frequency 252 or more?
When pressing [Spin] [Temp.] buttons at the
same time while wash, is the water level
frequency between 230 - 245V~?
same time after draining, is the water level
frequency 252 or more?
When pressing [Spin] [Temp.] buttons at the
same time while wash, is the water level
frequency between 230 - 245V~?
HEATING WITHOUT WATER
DRAIN MALFUNCTIONING
22
AC 220-240V
(1)
1
6
Replace the thermistor
Push the thermistor
tightly to the rubber.
When disconnecting the connector (1) on the
PWB assembly (Main) is the resistance of the
Natural connectors [ (Blue White),
PWB assembly (Main) is the resistance of the
Natural connectors [ (Blue White),
(White)]
between 2.5k
Ω
to 180k
Ω
(105°C~0°C)?
When checking thermistor on the tub,
is the thermistor loosened above 2mm from
the rubber?
HEATING CONTINUOUSLY ABOVE
THE SETTING WATER TEMPERATURE
23
NO
YES
YES
YES
NO
NO
NO
YES
1
10
5
1 2 3 4 5 6 7 8 9 10
3
5
2
1
4
SPIN TROUBLE
Check the sensor
(Pressure) or hose
(Sensor).
If the problem is on the
sensor or the hose, replace
the sensor or the hose.
(Pressure) or hose
(Sensor).
If the problem is on the
sensor or the hose, replace
the sensor or the hose.
Normal
Reconnect or repair it.
Replace the motor
assembly.
assembly.
Press [Power] button with [Temp] and [Option]
buttons pressed after power off. Press [Start/Pause]
button 2 times. Does the drum rotate at low spin
speed?
buttons pressed after power off. Press [Start/Pause]
button 2 times. Does the drum rotate at low spin
speed?
Is it disconnected or badly contacted?
[White : 2 pin ( ), Black : 2 pin ( ), White : 3 pin ( ),
Blue : 4 pin ( ), White : 4 pin ( )]
[White : 2 pin ( ), Black : 2 pin ( ), White : 3 pin ( ),
Blue : 4 pin ( ), White : 4 pin ( )]
Check the motor connector, Is the resistance between
the terminal in figure the same as below?
Resistance between terminals
the terminal in figure the same as below?
Resistance between terminals
~
: 0.5 ~ 1.0
Ω
~ ⑩
: 1.5 ~ 2.5
Ω
Be sure to unplug the machine before measuring.
MOTOR TERMINAL
MOTOR TERMINAL
Replace the PWB assembly.
While spinning, is the frequency of the
water level 248 or more. The frequency can
be checked by pressing the [Spin] and
[Temp.] buttons at the same time on the
program.
water level 248 or more. The frequency can
be checked by pressing the [Spin] and
[Temp.] buttons at the same time on the
program.
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