LG Wd 80490n Service Manual

							20
YES YES YES
NO NO
NO
NO
NO
YES YES
YES
YES
Wiring diagram
option (HOT)
MAXmax
ABNORMAL SOUND SOFTENER DOES NOT FLOW IN
Fix the bolt tightly.
Replace the V-belt
(4400FR3116B)
Replace the motor. Refer to
NO WATER SUPPLY
Check the wiring on the 
dispenser.
Put it in the correct
compartment.
Clean the cap and
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?
Is softener put in the correct compartment of
drawer?
Is the softner cap clogged?
  
						

							21
NO
NO YES
YES
YES NO
NO
NO
NOYES
YES
NO
PWB ASSEMBLY
PWB ASSEMBLY
12
Replace the sensor 
(pressure).
Replace the PWB
Assembly.
Repair drain hose
Remove foreign
material.
Reconnect or repair the
connector
Replace the pump
assembly
Replace the PWB  Checking voltage between two pins as press
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?
Is the coil of drain pump cut-off?
(resistance of coil is 90~160Ω)
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~?
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 [H
						

							23
NO
YES
YES YES
NO
NO
NO
YES
1
105
12345678910
35214
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.
Normal
Reconnect or repair it.
Replace the motor
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?
Is it disconnected or badly contacted?
[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
H
						

							24
Be sure to unplug the machine out of the outlet before disassembling and repairing the parts. 
9. DISASSEMBLY INSTRUCTIONS
Unscrew 2 screws on the back of the top plate.
Pull the top plate backward and upward as shown.
Disconnect the PWB Assembly connector from Main
lead wire Assembly.
Pull out the drawer and unscrew 2 screws.
Push upper hooks down on the top and pull the control
panel.
Disconnect the PWB assembly from the control panel
by unscrewing 5 screws.
Hook
PLATE ASSEMBLY (TOP)
CONTROL PANEL
 
						

							25
Disassemble the top plate assembly.
Pull out the drawer to arrow direction.
Unscrew 2 screws.
Disassemble hose and its clamps.
Disassemble ventilation bellows and water inlet
bellows on the tub.Option
DISPENSOR ASSEMBLY
DRAWER
DISPENSER ASSEMBLY  
  
						

							26
Disconnect the wiring receptacle.
Unscrew 2 screws from the back.
When reconnecting the connector
Open the lower cover cap by using coin and pull out  the
lower cover to the arrow direction after a screw is
unscrewed.
Open the door completely.
Remove the two screws from the hinge.
When removing the door assembly, it is necessary to
hold the bracket that is inner of the cabinet cover.
12
3
INLET VALVE
LOWER COVER
VALVE #1 (MAIN) White/Black-Black
VALVE #2 (PRE) Black - Gray
VALVE #3 (HOT) Blue/White - Black
DOOR
  
						

							27
Take apart the cabinet gasket clamp.
Unscrew 2 screws from the cabinet cover.
Open the lower cover cap and unscrew 1 screw inside.
Take apart the lower cover.
Disassemble the cantrol panel. (refer to the page 25)
Unscrew all the screws on the upper and lower sides
of the cabinet cover.
Take apart the tub gasket clamp.
Make sure that the drain hole of the gasket is put
beneath when reassembling the gasket.
Refer to the arrow mark on the tub cover.
GASKET ASSEMBLY 
  
						

							28
Remove the back cover.
Take off the belt turning the pulley.
Unscrew the bolt to pull out the pulley.
Unscrew 2 screws from the bracket.
Push the motor in the arrow direction for
disassembling.
When reassembling the motor, make sure that motor
mounting bushings are not taken off from the bracket.
Pull out the hinge, pressing its snap.
Do not use the pulled - out hinge again. It may be
taken off during operation.Hinge,
DamperDamper
1
2
3
PULLEY, MOTOR, DAMPER
(PULLEY)
(MOTOR)
(DAMPER)
Open the lower cover cap (H
						

							29
Pump Outlet Hose
Tub Pump 
Bellows
Remove pump outlet hose.
Remove tub pump bellows.
Remove cap (Remaining Hose.)
Disconnect the wiring.
Unscrew 2 screws. 
Remove the pump.
Loosen the M6 heater nut to pull out the heater.
When mounting the heater, be sure to insert the heater
into the heater clip on the bottom of the tub.
Pull it out by holding the thermistor bracket.
If it is pulled by the wire, it may be broken.
When mounting the thermistor again, make sure that it
is got back tight to the bushing.
PUMP 
HEATER 
THERMISTOR 
CAUTION
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