LG WD-8054FB Service Manual ▷ View online
28
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
Wiring diagram
option (HOT)
ABNORMAL SOUND
SOFTENER DOES NOT FLOW IN
Fix the bolt tightly.
Replace the V-belt.
(4400FR3116A)
(4400FR3116A)
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 connectly connected to the
terminals of inlet valve?
terminals of inlet valve?
Is softener put in the correct compartment of
drawer?
Is the softener cap clogged?
29
Wash
Rinse
AC 220-240V
NO
NO
YES
PWB ASSEMBLY (MAIN)
Replace the sensor
(pressure).
Replace the PWB
assembly (Main).
assembly (Main).
When pressing WASH and RINSE at the same time
after draining, is the water level frequency 252 or
more?
When pressing WASH, RINSE buttons at the
same time while wash, is the water level
frequency between 220 - 240?
after draining, is the water level frequency 252 or
more?
When pressing WASH, RINSE buttons at the
same time while wash, is the water level
frequency between 220 - 240?
Checking voltage between two pins as press
the power button is the voltage 220 - 240V~?
the power button is the voltage 220 - 240V~?
HEATING WITHOUT WATER
220-240V
YES
NO
PWB ASSEMBLY (POWER)
Clean the air chamber
and hose.
Replace the sensor.
(pressure)
and hose.
Replace the sensor.
(pressure)
Are there any problem at air chamber, the hose
or pressure sensor?
or pressure sensor?
Replace the PWB assembly.
(POWER or MAIN)
■ WD-6550F / WD-8050F(H) / WD-1050(5)F(H)
■ WD-6550FB / WD-8050(4)F(H)B / WD-1050(5)F(H)B / WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B
30
YES
YES
NO
NO
YES
NO
YES
NO
NO
2
1
(5)
(6)
PWB ASSEMBLY (MAIN)
Repair drain hose.
Remove foreign material.
Reconnect or repair the
connector.
connector.
Replace the pump
assembly.
assembly.
Replace the PWB
assembly (Main).
Is the drain hose twisted or frozen?
Is the impeller of the drain pump clogged?
Is the connector disconnected, disassembled?
Is the coil of drain pump cut-off?
(resistance of coil is 90~160
Ω)
When checking voltage between connectors
( , ) on spinning, is the voltage 220 - 240V~
as the figure?
D R A I N M A L F U N C T I O N I N G
■ WD-6550FB / WD-8050(4)F(H)B / WD-1050(5)F(H)B / WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B
1
2
PWB ASSEMBLY (MAIN)
YES
YES
NO
NO
YES
NO
YES
NO
NO
Repair drain hose.
Remove foreign material.
Reconnect or repair the
connector.
connector.
Replace the pump
assembly.
assembly.
Replace the PWB
assembly (Main).
Is the drain hose kinked or frozen?
Is the filter of drain pump clogged?
Is the connector disconnected or is the contact
bad?
bad?
Is the coil of drain pump cut-off?
(resistance of coil is 90~160
Ω)
When checking voltage between two
receptacles as shown (
,
) on spinning,
is the voltage 220-240V ?
■ WD-6550F / WD-8050F(H) / WD-1050(5)F(H)
31
When checking the voltage between
connector the PWB assembly (Main) during
whites washing ,Is the voltage
220 - 240V ?
connector the PWB assembly (Main) during
whites washing ,Is the voltage
220 - 240V ?
Replace the PWB
assembly (Main).
assembly (Main).
YES
NO
After power off and the heater terminal is
disconnected, is the resistance 10 to 30 ?
disconnected, is the resistance 10 to 30 ?
Replace the heater
assembly.
assembly.
NO
After power off,is the resistance of wire
(RED-YELLOW) connectors between
10 to 30 ?
(RED-YELLOW) connectors between
10 to 30 ?
Normal.
NO
YES
RED
YELLOW
1
2
4
3
~
220 - 240V~
PWB ASSWMBLY (MAIN)
■ WD-6550FB / WD-8050(4)F(H)B / WD-1050(5)F(H)B / WD-1253(5)F(H)(B) / WD-1054(6)F(H)B / WD-1254(6)F(H)B
AC 220-240V
NO
NO
YES
NO
YES
Yellow
Red
Replace the PWB
assembly (Power).
assembly (Power).
Normal.
Replace the heater
assembly.
assembly.
When checking the voltage between two
receptacles of the PWB assembly (Power) during
washing.
Is the voltage AC 220-240V?
receptacles of the PWB assembly (Power) during
washing.
Is the voltage AC 220-240V?
After power off, is the resistance between yellow
wire and red wire of
connector 10 to 30
wire and red wire of
connector 10 to 30
Ω?
After power off, is the resistance of heater
10 to 30
Ω?
■ WD-6550F / WD-8050F(H) / WD-1050(5)F(H)
WA S H H E AT E R T R O U B L E
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