LG XD3 15 Series User manual

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DISHWASHER
SERVICE MANUAL
NOTE
For Authorized Service Technicians
CONFIDENTIAL
MODEL : XD3*15** / XD4*14** / XD4*15** / XD5*14**
XD3*25** / XD4*24** / XD5*24**
READ THIS MANUAL CAREFULLY BEFORE SERVICING THE PRODUCT. FOLLOW
THE MANUAL'S INSTRUCTIONS WHEN SERVICING THE PRODUCT.
Any reproduction or duplication (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 prohibition includes, without limitation, any text, graphics or logos in this
Service Manual.
Copyright ⓒ 2017 LG Electronics Inc. All rights
reserved. Only for training and service purposes.

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For Authorized Service Technicians
CONTENTS
1. IMPORTANT SAFETY NOTICE ................................................................................................................................... 4
2. SPECIFICATIONS .............................................................................................................................................................. 5
3. FEATURES AND OPERATION .................................................................................................................................... 6
4. PARTS .................................................................................................................................................................................. 14
5. PROGRAM GUIDE ....................................................................................................................................................... 15
6. HOW TO DISASSEMBLE ........................................................................................................................................... 16
30 .......................................................................................................................... SDOHTEM GNITOOHSELBUORT .7
7-1. TROUBLESHOOTING ACCORDING TO DISPLAY ERROR MESSAGE ...................................... 30
32 ................................................................................... )edoC rorrE( SDOHTEM GNITOOHSELBUORT .2-7
40 ...................................................................................................... ).ctE( DOHTEM GNITOOHSELBUORT .3-7
8. INSTALLATION INSTRUCTIONS ............................................................................................................................ 49
9. EXPLODED VIEW .......................................................................................................................................................... 56
75 ................................................................................................................................................. SMARGAID GNIRIW .01
10-1. WIRING DIAGRAM ...................................................................................................................................... 75
10-2. MAIN PCB ........................................................................................................................................................ 77
10-3. DISPLAY PCB .................................................................................................................................................. 79
8011. Tips for Checking & Replacement
8011-1. Tip for using TEST MODE ........................................................................................................................
.....................................................................................................................
8111-2. Tip for Noise Filter Replacement ........................................................................................................
8311-3. Tip for Dispenser Replacement ............................................................................................................
8512. Etc.
8512-1. Accessories .....................................................................................................................................................
...................................................................................................................................................................................
8712-2. Explanation for softener Asm ...............................................................................................................
8912-3. Explanation for Vario system ...............................................................................................................

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For Authorized Service Technicians
DISCONNECT POWERSUPPLY LINE BEFORE SERVICING
RECONNECT ALL GROUNDING DEVICES
IMPORTANT SAFETY NOTICE
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 and 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.
CAUTION

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For Authorized Service Technicians
2. SPECIFICATIONS
ITEM SPECIFICATION
Rated Voltage / Frequency AC 220~240V / 50Hz
Installation Freestanding
Place Settings XD3*15**, XD3*25**, XD4*15** (15 p/s),
XD4*14**, XD4*24**, XD5*14**, XD5*24** (14 p/s)
Product Dimension (mm) 600(W) x 600(D) x 850(H)
Product Weight (kg)XD3*15** : 50kg, XD4*14** / XD5*14** : 47kg
XD3*25** : 52kg, XD4*24** / XD4*15** / XD5*24** : 48kg
Door Color Matte Black, Noble Steel, Black STS, PS3, White
Tub Material Stainless Steel
Control Electronics
Rated Power(Watt) 1,800(240V)
Heater Power(Watt) 1,700(240V)
Programs 9
Upper Rack Position Adjustable
Lower Rack Fold down
Water Consumption (ℓ) XD3*15**/XD3*25** : 11.1 (Eco + Energy Saver)
XD4*14**/XD4*24**/XD5*14**/XD5*24** : 11.5 (Eco + Energy Saver)
XD4*15** : 12.2 (Eco + Energy Saver)
Power Consumption (kWh/year) XD3*15**/XD3*25**/XD4*15** : 246 (Eco + Energy Saver)
XD4*14**/XD4*24**/XD5*14**/XD5*24** : 230 (Eco + Energy Saver)
Operating Time (min) XD3 : 176 (Eco + Energy Saver)
XD4, XD5 : 175 (Eco + Energy Saver)
Drying System XD3 : Auto Open Door (AOD) + Condensing
XD4, XD5 : Condensing
Delay Start Function Yes
Auto-Off Power Switch Yes
Process Monitor On some models (XD3)
Wash Level5
Racks Nylon Coating
Operating Water Pressure (Mpa) 0.05 – 0.6

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For Authorized Service Technicians
3. FEATURES AND OPERATION
PRODUCT FEATURES
QuadWash™ System
Multi-Motion lower spray arm shoots water in various directions and at optimized intensities to reach every area of the tub.
This system provides more powerful and complete cleaning coverage.
Inverter Direct Drive Motor
LG's experience in motor technology results in extraordinary functionality, with advanced features like the Dual Zone option,
The simple design and high build quality of the motor make it so reliable that it's covered for 10 years under the warranty.
EasyRack Plus
various shapes and sizes.
Smart ThinQ™
Download the new LG smart phone app to set options, self-diagnose and troubleshoot problems with the appliance, and
other useful features. Some of these functions use Wi-Fi or NFC (Near Field Communication) technology and require an
NFC-equipped smart phone.

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Control Panel
Non-Steam Models (Models : XD3*15**, XD4*14**, XD4*15**)
12
4
3
Steam Models (Models : XD3*25**, XD4*24**, XD5*24**)
12
4
3
•Depending on the model, the logo and may be located either on the front of the appliance
or the top of the door.

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Power
•Briefly touch Power button to turn power on
and off.
•After the cycle is complete, the power
automatically turns off for purposes of safety
and economy.
•If there is a power surge, power outage, or
disruption of any kind, power is automatically
turned off for safety.
•When power is connected again, it will turn on
automatically and resume the cycle.
Display
•: Digial Display
−The digital display on the control panel
shows the ESTIMATED cycle time. When
the cycle and options are selected, the
display shows the total estimated time to
complete those selections. During operation,
the display shows the remaining estimated
operating time.
−The estimated time shown on the display
does not include delay times for heating
water, etc.
−If Delay Start is selected, the display shows
the delay time in hours.
−The Auto cycle time may vary depending on
the soil level of your load.
•: Rinse Aid Icon
−This icon flashes when the rinse aid level is
low. The LED automatically shuts off when
the rinse aid is refilled or the level is set to
0.
1
2
•: Machine Clean Icon
−This icon flashes after every 30 cycles.
−To activate or deactivate the icon, press the
Delicate button for 3 seconds.
•: Wi-Fi
−When the appliance is connected to the
internet through a home Wi-Fi network, this
icon illuminates.
•: Salt refill Icon
−This icon flashes when the salt level is low.
The LED automatically shuts off when the
salt is refilled.
Cancel
•The drain pump activates and the cycle
cancels. Once the appliance finishes draining,
the power turns off.
•Press and hold Start button for 3 seconds to
activate the cancel function.
Start
•To operate the appliance, either (depending
on display type) press the Start button and
close the door or close the door and press the
Start button.
•If Start button is not pressed to start the cycle
within 4 minutes, the power will automatically
turn off.
Chime On/Off
•To activate or deactivate the button sounds,
press and hold Dual Zone and Energy Saver
simultaneously for 3 seconds. The error alert
sound cannot be turned off.
3
4
EN

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EN
Cycles
Auto
This cycle senses the soil amount and water
clarity and optimizes the wash to achieve the
best cleaning. The wash time may vary
depending on the soil level.
Intensive
This cycle is for heavily soiled dishes and
dishes with hardened on soil. The Heavy cycle
defaults to the strongest spray intensity and
uses it to wash heavily soiled dishes.
Delicate
Use this cycle to clean delicate items such as
fine china and stemware.
Refresh
This cycle freshens up and warms dishes that
have been unused for a long time.
•Do not use detergent when using this cycle.
Eco
•It provides the most efficient energy and water
consumption for a good washing performance
and drying result on a normally soiled load
and as it uses very little energy.
•Eco cycle and the Energy Saver option are
suitable for a normally soiled load.
Turbo
This cycle will clean moderately soiled dishes
using slightly more energy and water.
•Extra Dry is set to on as default. If you do not
want to dry dishes after washing, turn off the
Extra Dry option. Not drying the dishes will
result in a shorter cycle time.
Download Cycle
Use a dedicated cycle downloadable via Wi-Fi
or NFC. (depending on model).
NOTE
•Only the cycle code for the currently
downloaded cycle appears on the appliance.
See the smartphone app for cycle codes,
names, and more information about the
available cycles.
−Default Cycle: P1. Pots & Pans
Machine Clean
This cycle is for cleaning the inside of the
appliance. Use the cycle without dishes in the
appliance. It eliminates residual soils, odor,
white spots, and other dirt. Add citric acid or
another cleaning agent for more effective
results.
•Press and hold Intensive for 3 seconds to
activate.
Rinse
This cycle is a quick rinse only for dishes that
will not be washed immediately. The cycle
rinses dishes that have excess soil to soften
dried on residue. Rinsing the dishes helps
prevent odors in the appliance. Do not use
detergent with the Rinse function.
•This cycle does not have drying.
•Press and hold Eco for 3 seconds to activate.
Express
This cycle will quickly clean lightly soiled dishes.
•This cycle does not have drying. Select the
Extra Dry option or another cycle for better
drying. Extra Dry will add to the overall cycle
time.
•Press and hold Turbo for 3 seconds to
activate.
•Detergent tablets are not recommended for
use of Express cycle. If the detergent tablets
are used, it may cause detergent residue on
dishes due to the relatively low rinse
temperatures.

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EN
Cycle Options
Select the desired cycle button and then select
the options for that cycle. For more information
about Cycle Options, see the Available Options
section.
Dual Zone
This option automatically sets the spray
intensity to soft for the upper spray arm and
strong for the lower spray arm. Place heavily
soiled dishes like plates and bowls in the lower
rack and lightly soiled dishes like cups and
small plates in the upper rack to get the best
results.
Half Load
This option washes intensively by selecting the
upper or lower racks. For small loads, use just
the upper or lower rack to save energy and
time. By pressing the Half Load button, the
settings (Upper) , (Lower) and the
cancellation of the Half Load option are
available.
Energy Saver
This option saves energy by reducing the wash
and rinse temperatures. Wash time is increased
to maintain wash performance. Do not use this
cycle with heavily soiled dishes.
Steam
This option adds steam during the cycle to
improve wash performance.
High Temp
Raises the main wash or heating rinse
temperature to improve cleaning.
•A chime will sound to alert you of any residual
temperatures inside the appliance. Wait for
the appliance to completely cool down before
opening the door.
Extra Dry
Select the Extra Dry option for better drying
performance. This option adds Extra Drying
time to the cycle and raises the heating rinse
temperature.
•When the rinse aid is empty, the Extra Dry
option is selected automatically.the door.
Delay Start
The Delay Start feature delays the start of a
selected cycle. Each time the Delay Start
button is pressed, the delay time increases by
an hour. The delay time can be set from 1 to 12
hours, in one-hour increments.
•To cancel the Delay Start, turn the power off.
•To change the cycle and cycle option, open
the door and then select another cycle and
cycle option. The countdown will continue.
Control Lock
The Control Lock feature helps prevent settings
from being changed during a cycle. Selecting
this feature locks all of the buttons, except for
the Power button, on the control panel. This
feature does not lock the door.
•On models with the external display, while a
cycle is running, press and hold Half Load
and Energy Saver simultaneously for 3
seconds to activate or deactivate Control
Lock. On models with a concealed display,
open the door during operation and follow the
same instruction.
•When the Control Lock feature is activated,
the display code will show on the display.
•To start a new cycle, deactivate Control Lock.
•Control Lock button can be set at any time by
turning on the appliance.
Wi-Fi
Press and hold Delay Start for 3 seconds to
connect to the network. Refer to SMART
FUNCTIONS sections for detailed information
about this feature.
EN
Auto Open Dry (AOD) (On
Some Models)
The door will open automatically at the end of a
programme that includes drying in order to
enhance drying performance.
•The AOD feature is not available in all models.
•To activate or deactivate AOD feature, press
and hold the Energy Saver button and the
High Temp button simultaneously for 3
seconds.
•The AOD feature is not available when the
Machine Clean and Rinse cycle is selected.
•When you select the Download Cycle, the
AOD feature may operate even if the feature
is deactivated. Because the Download Cycle
is designed to achieve the best performance
in a specific purpose regardless of appliance
settings.
•The display shows whether the AOD feature is
on or off.
WARNING
•Keep children away from the appliance while
the appliance is operating. Exposure to high
temperature steam may cause scalding or
burns.
SignaLight™ (On Some
Models)
SignaLight™ shows the status of the appliance,
whether it has encountered any problems,
whether it is operating normally, or whether it is
ready to wash dishes.
•Depending on the model, the lamp may be
located either on the front of the appliance or
the top of the door.
Red (left)
•The red lamp flashes when the appliance
encounters an error. For more information
about the error, see the Error Code part of the
TROUBLESHOOTING section.
White (middle)
•The white lamp flashes when you select an
option cycle or when a cycle has been
paused.
•The white lamp lights up when a cycle is
running.
Green (right)
•The green lamp lights up when a cycle is
finished. When the door is opened, the lamp
turns off.
•Turn the power on, and then press and hold
the High Temp button for 3 seconds until
shows on the display.
−The default setting is on . When
shows on the display, the green lamp stays
on for 90 seconds after the cycle has
finished.
−You can set the lamp setting to on the
display so that the dishwasher keeps the
green lamp on until the door is opened
manually. (and the Auto Open Dry feature is
set to OFF).

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EN
Auto Open Dry (AOD) (On
Some Models)
The door will open automatically at the end of a
programme that includes drying in order to
enhance drying performance.
•The AOD feature is not available in all models.
•To activate or deactivate AOD feature, press
and hold the Energy Saver button and the
High Temp button simultaneously for 3
seconds.
•The AOD feature is not available when the
Machine Clean and Rinse cycle is selected.
•When you select the Download Cycle, the
AOD feature may operate even if the feature
is deactivated. Because the Download Cycle
is designed to achieve the best performance
in a specific purpose regardless of appliance
settings.
•The display shows whether the AOD feature is
on or off.
WARNING
•Keep children away from the appliance while
the appliance is operating. Exposure to high
temperature steam may cause scalding or
burns.
SignaLight™ (On Some
Models)
SignaLight™ shows the status of the appliance,
whether it has encountered any problems,
whether it is operating normally, or whether it is
ready to wash dishes.
•Depending on the model, the lamp may be
located either on the front of the appliance or
the top of the door.
Red (left)
•The red lamp flashes when the appliance
encounters an error. For more information
about the error, see the Error Code part of the
TROUBLESHOOTING section.
White (middle)
•The white lamp flashes when you select an
option cycle or when a cycle has been
paused.
•The white lamp lights up when a cycle is
running.
Green (right)
•The green lamp lights up when a cycle is
finished. When the door is opened, the lamp
turns off.
•Turn the power on, and then press and hold
the High Temp button for 3 seconds until
shows on the display.
−The default setting is on . When
shows on the display, the green lamp stays
on for 90 seconds after the cycle has
finished.
−You can set the lamp setting to on the
display so that the dishwasher keeps the
green lamp on until the door is opened
manually. (and the Auto Open Dry feature is
set to OFF).

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For Authorized Service Technicians
3-3. TEST MODE
BUTTON
Times
button is
pushed
Top
Display
Load and Checking points Door
open/
closed
Remark
Load LED lighting
POWER
+ START or
POWER
+ AUTO
+ START
1 Time
A**/
d**/U**
(Version)
Power Button
is lighting.
Rinse Aid &
Salt
are Flashing
(If needed
Rinse aid)
other LEDs are
Either
"nC" Will be
displayed when NFC
Failure.
Start
1 Time Sump
Temp(℃)Dispenser
Closed
"EE" will be
displayed when
EEPROM is Failure.
2 Times Soil level Soil Sensor
Closed
3 Times Drain
Motor RPM Drain Motor Either
Drain water from
sump
to drain hose
4 Times Frequency
Inlet Valve
+ Solenoid
Valve(Water Jacket)
Closed Supply water from
inlet hose
5 Times n06 Solenoid
Valve(Water Jacket) Closed Drain water from water jacket to sump
6 Times n07 Solenoid
Valve(Softener) Closed
7 Times Washing
Motor RPM Washing Motor Closed
Operate washing
motor
8 Times Washing
Position
Washing Heater +
Vario Valve Closed
Un : Detecting Washing
Position
Lo : Detecting
Complete "nE" Will be
displayed when Vario
Valve is failure.
9 Times -All LEDs are Closed
※ Top plate should be removed to run test mode for Top/Flush Model.
.woleb redro laciremun ni tekcaj retaw morf edom tset gnisu yb retaw niard tsum uoY ,ecnailppa eht nwod yal ot deen uoy fI ※
tekcaj retaw morf retaw niard ot sdnoces 06 naht erom tiaw dna )60n(semit5 nottub tratS sserp ,edom tset gniretne retfA ①
to sump.
si retaw litnu tiaw dna semit 3 nottub tratS sserp ,edom tset gniretne retfa dnA .ecnailppa eht ffo nrut ,①pets retfA ②
completely drained.
CHECK PROGRAM

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For Authorized Service Technicians
Function Button method of operation
Motor
Test
Mode
Start Extra Dry POWER 2 Button Press for 3 seconds
Washing Motor On / Off START Press
Increse Washing Motor RPM Delay Start Press
Decrease Washing Motor RPM Extra Dry Press
Nozzle setting High Temp Press
Heater On / Off Energy Save Release less than 3 seconds
Water Supply On / Off Half Load Release less than 3 seconds
Drain On / Off Dual Zone Press
Regen Water Supply On / Off Download
Cycle Press for 3 seconds
Auto Open Door(AOD) Open/Close Auto Press
※ 7 seconds is suitable for Regen Water Supply.

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For Authorized Service Technicians
4. PARTS
Exterior Parts
Interior Parts
1
6
7
8
3
2
4
5
Control Panel & Door Handle
Top Plate
Front Cover
Lower Cover
Leveling Feet
Drain Hose
Water Supply Hose
Power Cord
1
2
3
4
5
6
7
8
)
Top Wash Impeller
1
Upper Spray Arm
2
Lower Spray Arm
3
Salt Container Cap
4
Filtration System
5
Cutlery Basket
(on some models)
6
Detergent and Rinse Aid
Dispenser
7
Cutlery Rack (on some models
8
Upper Rack
9
Lower Rack
10
Steam Nozzle (Steam Models)
11
1
11
7
3
4
5
9
8
2
10
6

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For Authorized Service Technicians
5. PROGRAM GUIDE
EN
Programme Guide (model dependent)
Programme Soil Level
Wash Rinse
Dry
Pre wash Main wash Rinse Heating
rinse
Auto All levels
(50 - 55 °C) (70 °C)
Intensive Heavy
(75 °C) (70 °C)
Delicate Light
(45 °C) (60 °C)
Refresh
(75 °C)
Eco Moderate
(53 °C) (70 °C)
Turbo Moderate
(65 °C) (65 °C)
Express Light
(45 °C) (60 °C)
Rinse Light
Machine
Clean
(50 °C) (70 °C)
•Running time may vary according to the water temperature, ambient temperature, water pressure and voltage.
•When the Auto Open Dry(AOD) feature is activated, the heating rinse temperature will be changed as 62°C.
Available Options
Programme
Options
Dual
Zone Half Load Energy Saver Steam High Temp Extra Dry Delay Start
Auto
Intensive
Delicate
Refresh
Eco
Turbo
Express
Rinse
Machine
Clean
Download
Cycle
•The Energy Saver option is not available with the High Temp or Extra Dry option.

- 16 -
For Authorized Service Technicians
BEFORE DISASSEMBLING THE DISHWASHER ;
1) Remove the plug from electric outlet to avoid electric shock.
2) Close the Water Tap(faucet).
3) Remove all dishes and items in the dishwasher.
4) Remove the Lower Rack and the Upper Rack.
5) If necessary, remove the inlet hose and drain hose to avoid the hose damages.
6) Prepare some towels to avoid floor wet by the water left in the dishwasher.
ni tew roolf eht diova ot tekcaj retaw morf edom tset gnisu yb retaw niard tsum uoY ,ecnailppa eht nwod yal ot deen uoy fI ※
numerical order below
ot tekcaj retaw morf retaw niard ot sdnoces 06 naht erom tiaw dna )60n(semit5 nottub tratS sserp ,edom tset gniretne retfA ①
sump.
② After step①, turn off the appliance. And after entering test mode, press Start button 3times and wait until water is completely
drained.
1-1. Top plate
B
C
A
1) Remove the rear 2 screws.
2) Pull back and lift the top plate.
1-2. Lower Cover
B
C
A
hguorht skooh eht hsup dna rood eht nepO )1
the gap.
1-3.Side Cabinet-R/L & Tub Felt
B
C
A
1) Side Cabinet-R/L
① Remove the front 1 screw.
fo raer eht ni mottob no skooh 2 netsafnU ②
Side Cabinet .(A)
tenibaC ediS fo tnorf eht ni kooh a netsafnU ③
.(B)
④ Lift the Side Cabinet.
noituaC
Take care not to damage the Side Cabinet.
Fasten 2hooks on the upper of the Side
Cabinet firstly When you reassemble. (C)
6. HOW TO DISASSEMBLE

- 17 -
For Authorized Service Technicians
2-1. Front Cover
① Open the door.
dnuora )sselniatS(swercs 6 evomeR ②
front cover assembly.
tnorf evomer dna ylwols rood eht esolC ③
cover downwards.
2-2. Control Panel Assembly
① Open the door.
② Remove 6 screws(stainless).
③ Remove the wire connection.
④ Remove the handle.
2-3. Panel Handle
Hook
Hook
Hook
Screw
driver
Hook
etarapes ot drawrof eldnah eht lluP ①
front hook.
② Push the 2hooks.(Left & Right)
③ Remove the handle.

- 18 -
For Authorized Service Technicians
2-4. Door Liner Assembly
④ ④ ⑤ ⑤
Dispenser Assembly
Using Dispenser Service Jig
① Close the Door.
② Disconnect Electrical wire connectors
from dispenser.
③ Insert the two side pieces into the inside
of the dispenser.
④ Insert the bottom piece.
⑤ After all three pieces have been inserted,
open the door and pull the dispenser
from the bottom up and pull out.
When pulling the dispenser out from the
door, lift the bottom of the dispenser
slightly from the inside, then remove the
bottom jig piece.
CAUTION: Watch pinch points to avoid
hand injuries.
① ②
③ ④
Assembling New Dispenser
① Verify the status of the flanges on the
inner door.
② Place the support jig then insert the new
dispenser.
③ Make sure that all flanges fit properly into
the dispenser hooks. (8 point on picture ③,④)
※ Be careful injury on your hand.
※ If you don't understand this process, refer
to 80p.
※ Make sure the gasket is assmebled correctly.

- 19 -
For Authorized Service Technicians
2-5. Door Spring
①
③
②
④
Roller rope spring
Replacing Door Spring
① Pull the Rope and Spring.
.relloR eht morf epoR eht evomeR ②
.esaB eht morf gnirpS eht evomeR ③
2-6. Door Liner
④
①②~③
Rope Holder
Replacing Door Liner
① Open the door.
② Press the Rope Holder.
③ Put Rope Holder into the Base.
morf ti evomer dna reniL rooD eht lluP ④
the Hinge Supporter.
※ CAUTION: Door may drop.

- 20 -
For Authorized Service Technicians
3. Lower Frame
tnorf rewol esaeler rof wercs 1 evomeR ①
cover.
② Remove 2 screw both sides.
eht evomer ot kooh edloh eht sserP ③
Harness Holder.
eht morf ediuG wolfrevO eht evomeR ④
Lower Frame.
eht egamad ro esol ot ton erac ekaT ※
Overflow Guide.
Overflow
Guide
Lower
Frame
Lower Front
Cover
Hook