LG WD205C Series User manual

WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
CAUTION
MODEL : WD205C*
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means),
publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you
have obtained the prior written consent of the LG Electronics entity from which you received this Service
Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this
Service Manual.
Copyright © 2016~ 2017 LG Electronics Inc. All rights reserved. Only training and service purposes.

SAFETY PRECAUTION!
IMPORTANT SAFETY NOTICE!
2
This service information is intended for individuals possessing adequate backgrounds of
electrical, electronic, and mechanical experience. Any attempt to repair this appliance may result
in personal injury or property damage. The manufacturer or seller can not be responsible for the
interpretation of this information, nor can it assume any liability in connection with its use.
WARNING: To reduce the risk of fire, electric shock, or personal injury when using this
appliance, follow basic precautions, including the following:
·Wear gloves when working.
Failure to do this can result in serious injury.
·The appliance is heavy. Two or more people is
required when moving the appliance.
There is a risk of serious back injury or other injuries.
·Certain internal parts are intentionally not
grounded and may present a risk of electric
shock only during servicing. Service personnel -
Do not contact the following parts while the
appliance is energized: Pump bracket, rotor, and
heater.
To reduce the risk of fire, electric shock, or personal injury when using this appliance, follow basic precautions,
including the following.
·Disconnect this appliance from the power
supply before servicing. Turning the controls to
the off position does not disconnect this
appliance from the power supply.
Failure to do this can result in shock.
·Reconnect all grounded devices after servicing.
Failure to do this can result in shock.
CONTENTS
1. SPECIFICATIONS...................................................................................................................... 3
2. FEATURES AND BENEFITS...................................................................................................... 4
3. HOW TO USE ............................................................................................................................ 5
4. WIRING DIAGRAM .................................................................................................................... 6
5. MAIN PCB PICTURE ................................................................................................................. 8
5-1. DISASSEMBLY INSTRUCTION ......................................................................................... 8
6. HOW TO USE SVC TEST MODE ............................................................................................ 19
7. ERROR CODES....................................................................................................................... 20
8. EXPLODED VIEW.................................................................................................................... 22
8-1. Exploded View Of Outer Case Assembly ......................................................................... 22
8-2. Exploded View Of Outer Tub Assembly ........................................................................... 24
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

1. SPECIFICATIONS
3
Model WD205C*
Electrical 120VAC@60Hz.
Inner Tub Stainless
Finish
W : Blue White V : Stainless Silver(VCM)
Door lid Glass Lid.
Inlet Water Pressure 20~120 PSI (138~827 kPa)
Rating of Fuse 120V/60Hz
Spin Speed 700RPM (Max)
Weight 100lb (47.4kg)
Cycles
Normal, Intimates, Hand Wash, Active Wear,
Rinse + Spin, Tub Clean
Time Delay No
Lid Interlock Switch Magnet Sensor
Control Lock Yes
Softener Dispenser No
Detergent Dispenser No
Bleach Inlet No
Auto Power Off Yes
Smart Rinse™with Jet
Spray
No
Heater No
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

2. FEATURES AND BENEFITS
4
KEY PARTS AND COMPONENTS
A INVERTER DIRECT DRIVE MOTOR
The inverter motor, which is directly connected to the tub, produces less noise and vibration while
offering outstanding durability and a long lifespan.
B COMPACT CAPACITY & NEVERUST™ STAINLESS STEEL TUB
The efficient design provides capacity in a compact space.
C FRONT TOUCH PANEL
The simple LED display shows cycle options, setting, cycle status and estimated time remaining. The
touch buttons offer more convenience and a premium design aesthetic.
D SMART DIAGNOSIS™
If you ever experience an issue with your LG washer, you don’t have to worry.
The SmartDiagnosis™ feature helps the service center diagnose problems over the phone, or with a
simple app on your smart phone, helping you minimize costly, inconvenient service calls.
E REMOTE CONTROL RCW1
Don't want to bend down to reach the controls? Set cycles with the touch of a button on the optional
remote control (available online or through an LG retailer).
NOTE: Contact LG Customer Service at 1-800-243-0000 (1-888-542-2623 in Canada) if any accessories are
missing or to purchase accessories.
Drawer
Lid
Control panel
Leveling feet
Leg Support
Stacking Switch
Top Cover
INCLUDED ACCESSORY REqUIRED ACCESSORY
2 Inlet
Hoses-Short 2 Inlet Hose Y-Connectors Drain Hose Y-Connector Drain Hose Non-Skid Pads
Inlet Hose
(18EA)
(5EA)
Max load
(2 tsp., 10 g)
Normal
(1 tsp., 5 g)
INCLUDED ACCESSORY
Wrench 2 Tie Straps
2 Wire clamps and
1 Band clamp
Screws Detergent Dispenser
Remote Control
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

5
3. HOW TO USE
CONTROL PANEL FEATURES
APOWER (ON/OFF) BUTTON
Press to turn the washer ON. Press again to
turn the washer OFF. Pressing the POWER
button during a cycle will cancel that cycle
and any load settings will be lost. The drawer
will unlock after a brief pause.
NOTE:
•If there is any water remaining in the tub
after the washer shuts off, it will drain
following 4-minutes delay. The washer
can be restarted any time before the drain
begins. However, once the water begins to
drain, all functions will be suspended until
the water has been completely drained
and the washer shuts off.
•When the Power button is pressed, the
Normal cycle is selected by default. To
modify the default options or choose
another cycle, press the cycle selector (v)
button to illuminate the display.
BCYCLE SELECTOR BUTTON
Press this button to select the desired cycle.
Once the desired cycle has been selected,
the standard presets will appear in the
display. These settings can be adjusted
using the cycle setting buttons any time
before starting the cycle.
NOTE: To protect your clothing, not all
settings are available on all cycle selections.
CSTART/PAUSE BUTTON
Press this button to start the selected cycle.
If the washer is running, use this button to
pause the cycle without losing the current
settings.
NOTE: If you do not press the START/PAUSE
button within 4 minutes of selecting a cycle,
the washer automatically turns OFF and all
cycle settings are lost. Any water remaining
in the tub will be drained.
DOPTION BUTTONS
Use these buttons to adjust the settings for
the selected cycle. The setting lights above
the buttons illuminate to show the current
selection.
ETIME AND STATUS DISPLAY
The display shows the cycle status and
estimated time remaining.
FREMOTE CONTROL SENSOR
Use the remote to set the controls without
bending down to reach the control panel.
A B C
DE F
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

6
4. WIRING DIAGRAM
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

7
5. MAIN PCB PICTURE
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

8
5. SERVICE INFORMATION
5-1. DISASSEMBLY INSTRUCTION
▶Be sure to unplug the power to repair and replace
electric parts.
ESD (ElectroStatic DIscharge) WARNING
Be sure to follow proper ESD and grounding
precautions for diagnosis and repair. If this is not
possible, touch the ground wire on a regular basis to
remove any static charge built up on your person.
①Release all screw in the red circle
②Pull out display pcb connector and release the hook.
③ Release all screw in the red circle (approx. 13 screws)
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

9
1) How to change the smart hinge
① Remove the left and right Hinge cover to put a flat-
blade screwdriver into the gap
②Remove the screw in the red circle
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

10
2) How to change the Latch
① Remove the screw cap to put a flat-blade screwdriver
into the gap
②Remove the screw in the red circle.
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

11
3) How to change the rear cover, the
power cord, and/or the main
controller
① Release all screws on the rear cover (approx. 14
screws)
②Pull out 2 connectors and release the power cord
③ Pull out inlet valve connectors and release inlet valves
④Release 3 screws on the cover of main controller and
pull out the cover
⑤Release all connectors on the main controller
⑥Release the wire connected on the BP sensor
⑦Release 4 screws on the main controller and pull out
the main controller
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

12
4) How to release the drawer assembly
①Release the rear cover totally from the cabinet
② Release 1 screw and 1 connector on the rear cover
③ Open the drawer and release 4 screws securing the
sliders and the drawer on the both sides
④ Pull out the drawer entirely from the cabinet
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

13
5) How to change the damper assembly
① Release the small cover on the drawer after pulling out
the drawer
② Release 7 screws and 1 clamp, and pull out the cover
of drawer
③ Release each damper being keeped the tub assembly
up slightly
④ Do not break the damper assembly down more.
Change the damper assembly as a whole.
Location P/No. PIVOT(Color)
Ⓐ, Ⓑ, Ⓒ, Ⓓ K100 NATURAL
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

14
6) How to change the motor assembly
① Pull out the drawer entirely.
② In order to check the motor assembly, turn the drawer
to be the side up. Be sure the drawer keeping on the
securing carpet to be protected from the damage.
③ Release the rotor bolt using the dedicated tool.
▶Use the socket wrench or the open wrench (M18).
Bolt torque when reassemble: 450~600kgf·cm2
- Warning
When reassemble, you have to push the rotor
grasping only outside the rotor. Do not grasp both
inside and outside of the rotor together.
④ Pull out 3 pin connector and release the motor stator.
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

15
⑤In order to pull out the motor, turn the drawer to be the
side up. And release stator and 6 Bolts.
⑥ Release 5 Screw and Pull out Harness
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

16
7) How to pull out the drain pump
① Drain the whole remaining water out using extra drain
hose on the left-side of drawer.
② Pull out the drawer entirely.
③ Turn the drawer to be the side up. Be sure the drawer
keeping on the securing carpet to be protected from the
damage.
④ Release the bellows connected on the outer tub.
⑤ Turn the drawer to be normal position and release 2
connectors on the pump case.
⑥ Release 2 bolts from pump housing securing on the
drawer.
⑦ Release 3 hoses from pump housing.
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

17
8) How to pull out thermistor
① Drain the whole remaining water out using extra drain
hose on the left-side of drawer.
② Pull out the drawer entirely.
③ In order to check the motor assembly, turn the drawer
to be the side up. Be sure the drawer keeping on the
securing carpet to be protected from the damage.
④ Lying Washing machine, and release 3 screws
⑤ Release 2 screw from the thermistor.
⑥ Pull out the thermistor entirely
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

18
9) How to pull out the pipe assembly
①Drain the whole remaining water out using extra drain
hose on the left-side of drawer.
② Pull out the drawer entirely.
③ Release the small cover on the drawer, 3 screws and
the clamp.
④ Release 4 clamps connected on the pipe assembly and
2 pins.
⑤ Release the check valve from the end of pipe
assembly.
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

19
Step Mode Motion Display Remark
t1 Main Version check All LEDs are turned on Main program version
Model option character
Able to check tE error. When Lid
is open, Lid open Picto is blinking.
t2 Display Version check
and Button check - Display program version
t3 Water Valve Check
- -
Water level frequencies
(57 means 25.7 kHz)
Valve is being on till 23.3 kHz.
Valve is automatically turned off
by 23.3 kHz to prevent overow.
A Cold valve is on
B Hot valve is on
t4 Heater Check Heater On -
t5
Pressure Switch
Check
Alpha Check
If water frequency is less than
25.0 kHz, Alpha motion is
started automatically. Drain
pump is also being on. If water
frequency is greater than or
equal to 25.0 kHz, 888 error is
displayed and the alarm tone
sounds. Alpha motion is started
when press Start/Pause key.
RPM of Alpha motion Error
code(888) when the water
frequency is greater than or
equal to 25.0 kHz
RPM: 220
On time: 16 seconds
Pump on
t6 Drain Check
On the water frequency being
reached at 25.0 kHz, the
drain pump is being on for 50
seconds.
After then, go to step t7
automatically.
Pump on
t7 Load sensing
Check
Locking the drawer Load
sensing Unlocking the drawer
The value of load being
sensed Err is displayed
when the load sensing is not
completed.
Pump on
t8 Agitate Check
Unlocking the drawer Change
pulsator mortion Agitating the
pulsator
The value of load being
sensed Err is displayed
when the load s ensing is not
completed.
t9
Spin Check
And dE error
check
Locking the drawer Spin
clockwise
Spin RPM Less than 500:
current RPM Greater than
500: UB value/ Max UB value
before 500 RPM / UB value
on RS1 / current RPM (at
each 2 seconds)
Spin for 180 seconds after
reaching max 600 RPM.
Quick stop the spin when Stack
switch is on.
Pump on
t10 OFF Power OFF - -
1. Warnings
2. SVC test mode
- Be sure that the AC power cord is pulled out from wall outlet.
- Put on gloves to protect from electric shock when disassemble the product.
- Deliver and keep the controller within the ESD protection bag.
- Starting SVC test mode: After power on, press Left Course key and Extra Rinse key at the same time within 1
second.
- Press Start/Pause key to go next step.
- You can check the conetnts of below table at each step.
6. HOW TO USE SVC TEST MODE
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.

20
7. ERROR CODES
Problem Possible Cause Solutions
The display shows: Drawer is not closed properly Close the drawer and press START/PAUSE
button to start the cycle.
If the drawer is closed and the drawer lock er-
ror message is displayed, call for service
The display shows: Lid is not closed properly Open the drawer and make sure the latch area
is free of clothing or other obstructions.
Close the lid, shut the drawer, and press
START/PAUSE to start the cycle.
If the lid is closed and the lid error picto is
blinked, call for service
Washer fills with water slowly or
not at all, or the display shows:
Water supply faucets are not fully
open.
Make sure that the water faucets are fully
open.
Water line hoses are kinked,
pinched, or crushed.
Make sure that the hoses are not kinked or
pinched. Be careful when moving the washer
during cleaning and maintenance.
Water inlet filters are clogged. Clean the inlet filters. See Maintenance in the
Care and Cleaning section.
Water supply pressure to faucet or
house is too low.
Check another faucet in the house to make
sure that household water pressure is ad-
equate and flow is not restricted. Disconnect
the inlet hose from the washer and run a few
gallons of water through the hose to flush the
water supply lines. If flow is too low, contact a
plumber to have the water lines repaired.
Water supply connected with leak-
limiting hoses.
Hoses designed to limit leaks can trip falsely
and prevent the washer from filling. The use
of leak limiting hoses is not recommended.
Washer will not turn on Power cord is not properly plugged
in.
House fuse is blown, circuit break-
er has tripped, or power outage
has occurred.
Make sure that the plug is plugged seruely
into a grounderd, 3-prong. 120-VAC, 60-Hz.
outlet.
Reset circuit breaker or replace fuse. Do not
increase fuse capacity. If the problem is a
circuit overload, have it corrected by a quali-
fied electrician.
Water in the washer drains slowly
or not at all, or the display shows:
Drain hose is kinked, pinched, or
clogged
Drain discharge is more than
96 " (243.84 cm) above bottom of
washer.
Make sure the drain hose is free of clogs,
kinks, etc., and is not pinched behind or under
the washer.
Adjust or repair drain. Maximum drain height
is 96 " (243.84 cm).
Washer chimes repeatedly before
final rinse
This is not an error. This is an alert
to allow the addition of liquid fabric
softener before the final rinse..
See Using Fabric Softener, page 16, for in-
structions on adding liquid fabric softener to
the load.
To disable or enable the fabric softener alert,
press and hold Warm Water and Extra Rinse
at the same time for three seconds.
LGE Internal Use Only Copyright © 2016 ~ 2017 LG Electronics Inc. All rights
reserved. Only training and service purposes.