LG LWD3063ST User manual

1
30” ELECTRIC CONVECTION
BUILT-IN OVEN
SERVICE MANUAL
MODEL: LWD3063ST
LWD3063BD
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 © 2015 - 2017 LG Electronics Inc. All rights reserved. Only training and service
purposes.
P/NO : MFL37118343
December, 2015
Printed in Korea
삼흥
정판
Internal Use Only

This LG Service Manual, “30” Electric Built-in Oven”, provides the technician with information on
the operation and service of the Electric Built-in Oven. It is to be used as a training Service
Manual. For specific information on the model being serviced, refer to the “Owner’s Manual” or
“Tech Sheet” provided with the electric oven.
SAFETY PRECAUTIONS
• Repairs of the appliance should be carried out by a licensed technician only. Incorrect repairs
may result in dangerous situations. If you need repairs, contact an LG Service Center or your
dealer.
• If the power cord is defective, it must be replaced by a qualified service agent with a UL listed
range cord.
• Electrical leads and cables should not be allowed to touch the oven.
• Rating plate is located on the bracket below the control panel.
• The power supply of the appliance should be turned off when it is being repaired.
FORWARD
LG Electronics assumes no responsibility for any repairs made
on our products by anyone other than Authorized Service Technicians.
WARNING
• DISCONNECT power supply cord from the outlet before servicing.
• Replace all panels and parts before operating.
• RECONNECT all grounding devices.
- Failure to do so can result in severe personal injury, death or electrical shock.
• DO NOT Touch when the oven operates.
- The interior parts will be very hot.

(Page)
GENERAL ------------------------------------------------------------------------------------------------ 1-1 ~ 1-6
• Read all instructions before use ------------------------------------------------------------------------------------- 1-1 ~ 1-4
• Model & Serial number label and tech sheet locations ------------------------------------------------------------- 1-5
• Specifications ---------------------------------------------------------------------------------------------------------------------- 1-6
USING YOUR OVEN ------------------------------------------------------------------------------- 2-1 ~ 2-4
• General information -------------------------------------------------------------------------------------------------------------- 2-1
• Control panel feature ---------------------------------------------------------------------------------------------------- 2-2 ~ 2-4
- Setting the Clock
- Start, Clear/off
- Oven light (Upper/Lower)
- Timer
- Control lockout
- Special Function: 6 types of category
1) Convection auto conversion
2) Temperature adjustment for Lower oven
3) Temperature adjustment for Lower oven
4) Language selection
5) Beep volume
6) Temperature unit
- Bake
- Broil
- Roast
- Convection bake
- Crisp convection
- Convection roast
- Favorite
- Timed cook, Delayed timed cook
- Warm
- Proof
- Self clean
DISASSEMBLY INSTRUCTIONS ------------------------------------------------------------ 3-1 ~ 3-3
• Component Locations -------------------------------------------------------------------------------------------- 3-1
DISASSEMBLY INSTRUCTIONS(UPPER) ----------------------------------------------- 3-2 ~ 3-3
• Replacing the control panel and related components ------------------------------------------------------------ 3-2~3-3
- Removing the SMPS PCB ---------------------------------------------------------------------------------------------------- 3-2
- Removing the Relay PCB ----------------------------------------------------------------------------------------------------- 3-3
- Removing the door lock assembly ----------------------------------------------------------------------------------------- 3-3
- Removing the Low Voltage Transformer (halogen lamp) ---------------------------------------------------------- 3-3
- Removing the Serge filter ----------------------------------------------------------------------------------------------------- 3-3
DISASSEMBLY INSTRUCTIONS(UPPER/LOWER) ----------------------------------- 3-4 ~ 3-5
• Replacing oven cavity components ----------------------------------------------------------------------------------- 3-4 ~ 3-5
- Removing the Broil element -------------------------------------------------------------------------------------------------- 3-4
- Removing the Convection element ---------------------------------------------------------------------------------------- 3-4
- Removing the Blade fan ------------------------------------------------------------------------------------------------------- 3-5
- Removing the Halogen lamp & socket assembly --------------------------------------------------------------------- 3-5
• Replacing other electrical components. ----------------------------------------------------------------------------- 3-6 ~ 3-9
- Removing the Vent motor ----------------------------------------------------------------------------------------------------- 3-6
- Removing the Thermal limiter ----------------------------------------------------------------------------------------------- 3-7
- Removing the Door switch --------------------------------------------------------------------------------------------------- 3-7
- Removing the Thermal limiter (Double Line Brake_Upper) ------------------------------------------------------- 3-8
TABLE OF CONTENTS

- Removing the Convection motor assembly ---------------------------------------------------------------------------- 3-8
- Removing the Hidden bake element ------------------------------------------------------------------------------ 3-8 ~ 3-9
DISASSEMBLY INSTRUCTIONS(LOWER) ------------------------------------------- 3-10 ~ 3-11
- Removing the Thermal limiter (Double Line Brake_Lower) ------------------------------------------------------ 3-11
- Removing the Convection motor assembly ---------------------------------------------------------------------------- 3-11
- Removing the Thermal limiter ----------------------------------------------------------------------------------------------- 3-11
- Removing the Hidden bake element ------------------------------------------------------------------------------------- 3-11
- Removing the vent motor ----------------------------------------------------------------------------------------------------- 3-11
- Removing the Door lock motor assembly ------------------------------------------------------------------------------ 3-11
- Removing the Door switch --------------------------------------------------------------------------------------------------- 3-11
DISASSEMBLY INSTRUCTIONS(UPPER/LOWER) ------------------------------- 3-12 ~ 3-15
• Removing & Reinstalling the lift-off oven door -------------------------------------------------------------------------- 3-12
• Removing the oven door handle & glass ----------------------------------------------------------------------- 3-13 ~ 3-14
• Removing the oven door gasket --------------------------------------------------------------------------------------------- 3-15
COMPONENT TEST -------------------------------------------------------------------------------- 4-1 ~ 4-4
• Convection motor ----------------------------------------------------------------------------------------------------------------- 4-1
• Door locking motor ---------------------------------------------------------------------------------------------------------------- 4-2
• Door locking micro switch ----------------------------------------------------------------------------------------------------- 4-2
• Low Voltage Transformer - Halogen lamp ------------------------------------------------------------------------------ 4-2
• Oven Thermistor ------------------------------------------------------------------------------------------------------------------- 4-3
• Door switch -------------------------------------------------------------------------------------------------------------------------- 4-3
• Oven lamp ---------------------------------------------------------------------------------------------------------------------------- 4-3
• Broil Element ------------------------------------------------------------------------------------------------------------------------ 4-4
• Bake Element ----------------------------------------------------------------------------------------------------------------------- 4-4
• Convection element -------------------------------------------------------------------------------------------------------------- 4-4
• Vent motor ---------------------------------------------------------------------------------------------------------------------------- 4-4
COMPOSITION OF CONTROL ---------------------------------------------------------------- 5-1 ~ 5-3
DIAGNOSIS THROUGH SCHEMATIC
-------------------------------------------------------------- 6-1
CHECK THE FAILURE CODE (F-code) ----------------------------------------------------------- 7-1
SAFETY CAUTION & ERROR CODE SUMMARY
-------------------------------------------- 8-1
CHECKING FLOW CHART BY FAIRURE
-------------------------------------------------------- 9-1
• No display (No power) ----------------------------------------------------------------------------------------------- 9-2 ~ 9-4
• No heating (including F9, F19 error) --------------------------------------------------------------------------- 9-5 ~ 9-9
• Door lock system failure (including F10, F20 error) ------------------------------------------------- 9-10 ~ 9-13
• Sensing fail (including F1, F2, F4, F5 error) ------------------------------------------------------------ 9-14 ~ 9-16
• Oven hot (including F6, F16 error) -------------------------------------------------------------------------- 9-17 ~ 9-19
• No key input Or F3 ----------------------------------------------------------------------------------------------------------- 9-20
• F11 error (communication error) ---------------------------------------------------------------------------------------- 9-21
SCHEMATIC DIAGRAM --------------------------------------------------------------------------------- 10-1
• Strip circuits ------------------------------------------------------------------------------------------- 10-2 ~ 10-5
EXPLODED VIEW ------------------------------------------------------------------------------- 11-1 ~ 11-7

1-1
GENERAL
READ ALL INSTRUCTIONS BEFORE USE
Read and follow all instructions before using your oven to prevent the risk of fire, electric shock, injury to person, or
damage when using the range. This guide don’t cover all possible conditions that may occur. For further assistance
contact your service agent or manufacturer.
This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hunt you
and others. All safety messages will follow the safety alert symbol and either the word “WARNING”
or “CAUTION”. These word means :
This symbol will alert you to hazards or unsafe practices which could cause
serious bodily harm or death.
WARNING
This symbol will alert you to hazards or unsafe practices which could cause
bodily injury or property damage.
CAUTION
WARNING
• NEVER use your appliance for warming or heating the room.
• DO NOT use water on grease fires.
- Turn off the oven to avoid spreading the flames. Smother the fire by closing the oven door or use dry chemical,
baking soda, or foam-type extinguishers.
• Use only dry pot holders.
- Moist or damp pot holders on hot surfaces may result in burns from steam. Do not let the pot holder touch hot
heating elements. Do not use a towel or other bulky cloth.
• Storage in or on appliance.
- Flammable materials should not be stored in an oven or near surface elements.
• Wear proper apparel.
- Loose-fitting or hanging garments should never be worn while using the appliance.
• DO NOT place aluminum foil directly on the oven bottom.
• Children should be kept away from the oven.
- Accessible parts may become hot when the broil is use.
• DISCONNECT power supply cord from the outlet before servicing.
• Replace all panels and parts before operating.
• RECONNECT all grounding devices.
- Failure to do so can result in severe personal injury, death or electrical shock.
• DO NOT Touch when the oven operates.
- The interior parts will be very hot.
• ELECTRIC SHOCK HAZARD
- Unit must be disconnected from electrical outlet when making repairs, replacements, adjustments. Replace all
panels before operating oven. Failure to do so can result in death or electrical shock.
CAUTION
• DO NOT leave children alone.
- Children should not be left alone or unattended in area where appliance is in use.
- Children should never be allowed to sit or stand on any part of the appliance.
• DO NOT leave small children unattended near the appliance.
- During the self-cleaning cycle, the outside of the oven can become very hot to touch.
• Be careful when you work on the electric oven handling the sheet metal part.
- Sharp edge may be present and you can cut yourself.
• Be careful not to bend the fan blade.
• The door is very heavy. Be careful when removing and lifting door. Do not lift the
door by the handle.

1-2
GENERAL
READ ALL INSTRUCTIONS BEFORE USE
SAFETY PRECAUTIONS
• Be certain your appliance is properly installed
and grounded by a qualified technician.
• Do not repair or replace any part of the
appliance unless specifically recommended in
the manual.
• All other servicing should be referred to a
qualified technician.
• Always disconnect power to appliance before
servicing by unplugging, removing the fuse or
switching off the circuit breaker.
• DO NOT TOUCH HEATING ELEMENTS OR
INTERIOR SURFACES OF OVEN.
Heating elements may be hot even though they
are dark in color. Interior surfaces of an oven
become hot enough to cause burns. During and
after use, do not touch or let clothing or other
flammable materials contact heating elements
or interior surfaces of oven until they have had
sufficient time to cool. Other surfaces of the
appliance may become hot enough to cause
burns. Among these surfaces are oven vent
openings and surfaces near these openings,
oven doors, and windows of oven doors.
• Use Care When Opening Door.
Let hot air or steam escape before you remove
or replace food in the oven
• Do Not Heat Unopened Food Containers.
Build-up of pressure may cause container to
burst and result in injury.
• Keep Oven Vent
Ducts Unobstructed.
The oven vent could
become hot during
oven use. Never block
this vent and never
place plastic or heat-
sensitive items on or
near the vent.
NOTE:
For proper operation vent trim must be installed.
• Be certain all packing materials are removed
from the appliance before operating.
Keep plastics, clothes, and paper away from
parts of the appliance that may become hot.
• DO NOT force the door open.
This can damage the automatic door locking
system. Use care when opening the oven door
after the self-cleaning cycle. Stand to the side of
the oven when opening the door to allow hot air
or steam to escape. The oven may still be
VERY HOT.
• DO NOT use a steel-wool pad.
It will SCRATCH the surface.
• DO NOT use harsh etching, abrasive
cleaners or sharp metal scrapers to clean
the oven door glass since they can scratch
the surface.
It may result in shattering of the glass.
•
Be careful when removing and lifting the door.
• DO NOT lift the door by the handle.
The door is very heavy.
• DO NOT step or sit on oven door.
Be sure to follow proper installation instructions.
ELECTRICAL SAFETY
• Protective Liners. Do not use aluminum foil or
any other material to line the oven bottoms.
Improper installation of these liners may result
in a risk of electric shock or fire.
• Do Not allow aluminum foil or meat probe to
contact heating elements.
Metal bottom
trim (Vent)
Aluminum foil
WARNING
• DO NOT place aluminum foil directly
on the oven bottom.
Metal bottom
trim (Vent)
Aluminum foil

1-3
GENERAL
READ ALL INSTRUCTIONS BEFORE USE
• Before replacing your oven light bulb,
switch off the electrical power to the oven at
the main fuse or circuit breaker panel.
Failure to do so can result in severe personal
injury, death, or electrical shock.
• DO NOT line the oven walls, racks, bottom,
or any other part of the oven with aluminum
foil or any other material.
Doing so will disrupt heat distribution, produce
poor baking results and cause permanent
damage to the oven interior (aluminum foil will
melt to the interior surface of the oven.)
SAFETY DURING USE
• Oven Racks. Always place oven racks in
desired position while oven is cool.
• Always use pot holders or oven mitts when
removing food from the oven.
You can be burned because cookware and
plates will be hot.
• Use caution with the TIMED BAKE or
DELAYED TIMED BAKE features. Use the
automatic timer when cooking cured or
frozen meats and most fruits and
vegetables. Foods that can easily spoil,
such as milk, eggs, fish, meat or poultry,
should be chilled in the refrigerator first.
Even when chilled, they should not stand in
the oven for more than 1 hour before
cooking begins, and should be removed
promptly when cooking is completed.
Eating spoiled food can result in sickness from
food poisoning.
• Should an oven fire occur, leave the oven
door closed and turn the oven off. If the fire
continues, throw baking soda on the fire or
use a fire extinguisher.
• DO NOT put water or flour on the fire.
Flour may be explosive and water can cause a
grease fire to spread and cause personal injury.
• DO NOT use the broiler pan without the grid.
DO NOT cover the grid with aluminum foil.
CHILD SAFETY
WARNING
• Children should be kept away
from the oven.
• Accessory parts will become hot
when the broiler is in use.
CAUTION
• Children should not be left alone
or unattended in area where
appliance is in use. Children
should never be allowed to sit or
stand on any part of the
appliance.
CAUTION
• DO NOT leave small children
unattended near the appliance.
During the self-cleaning cycle, the outside
of the oven can become very hot to the
touch.

1-4
GENERAL
READ ALL INSTRUCTIONS BEFORE USE
SAFETY WHEN CLEANING
• Do Not Clean Door Gasket. The door gasket is
essential for a good seal. Care should be taken
not to rub, damage, or move the gasket.
• Do Not Use Oven Cleaners. No commercial
oven cleaner or oven liner protective coating of
any kind should be used in or around any part
of the oven.
• Before self cleaning the oven. Remove broiler
pan, all oven racks, meat probe and any other
utensils from the oven cavity.
• Never keep pet birds in the kitchen. The
health of birds is extremely sensitive to the
fumes released during an oven self-clean cycle.
Fumes may be harmful or fatal to birds. Move
birds to well-ventilated room.
• Important Instruction. In the event the self
clean error code Fis displayed, and error
melody sounds, the oven is malfunctioning in
the self clean mode. Switch off the electrical
power to the main fuse or breaker and have
serviced by a qualified technician.
• Make sure oven lights are cool before
cleaning.
• DO NOT block the oven vent during
operation.
This can damage the electric parts of the oven.
Air must be able to move freely. The metal
bottom trim (vent) should be properly
assembled on the front bottom of oven before
installing the oven door.
Metal bottom trim
(Vent)

1-5
GENERAL
MODEL & SERIAL NUMBER LABEL AND
TECH SHEET LOCATION
The Model/Serial Number label and Tech Sheet locations are shown below.
Model & Serial
Number Location
Tech Sheet Location

1-6
GENERAL
SPECIFICATIONS
Product Specification List
No Items Specifications Remarks
1 Model name LWD3063ST / LWD3063BD North American market
2 Rating power source 240 V~ 60 Hz Single phase & 4-wires
3 Heat source Sheath heater
4 Max power 120/240V : 8.2 KW 120/208V : 6.1 KW
5 Max input current 32.5 A
6Rating power consumption &
Rating input current
Bake 2,500W / 10.4A
× 2 Upper+Lower oven
Broil 4,000W / 16.7A
× 2 Upper+Lower oven
Convection 2,000W /8.3A
× 2 Upper+Lower oven
Lamp 12V/10W/0.8A
× 2 Front ceiling area
Lamp (12V/10W/0.8A
× 2) × 2Left & right sides
Cooling motor 120V/41W/0.34A
× 2
Convection motor 120V/42W/0.65A
× 2
Locking motor 120V/3.5W/0.03A
× 2
7 Efficiency Higher than 80%
8 Control style Glass touch & Micom
9 Display Scroll VFD
10 Power control range 170~550˚F (77~288˚C) At bake mode
11
Capacity (Overall, W×H×D) 4.7 cu.ft (622 × 449 × 474 ) 24 1/2 × 17 11/16 × 18 5/8
12 Capacity (Usable) 3.2 cu.ft (601 × 345 × 436 ) 23 5/8 × 13 9/16 × 17 3/16
13 Cut out size ( W×H×D ) 724 × 1,316 × 596 28 1/2 × 51 13/16 × 23 1/2
14 Unit Dimension 755 × 1,322 × 619 29 3/4 × 52 1/16 × 24 3/8
15 Net Weight 120 Kg 264 lbs
16 Packing size 855
× 1,470 × 776 33 11/16 × 57 7/8 × 30 9/16
17 Packing weight 135 Kg 297 lbs
18 Stack height 2 levels

2-1
USING YOUR OVEN
GENERAL INFORMATION
Rating Label
Model numbers are recorded on the rating label.
Rating label is located on the lower left bottom
area of the controller. It can be seen by opening
the Upper door. Before ordering parts, write down
the correct model and serial number from rating
label. This avoids incorrect shipments and
delays. Please refer to parts reference material
when ordering replacement parts.
Functional Operation
Bake Mode
Top and hidden bottom elements operate during
bake. Bake can be used to cook foods which are
normally baked. Oven must be preheated.
Convection fan and heater operates during the
Preheat cycle of Bake mode.
Broil Mode
Top element operates during broil. Broil can be
used to cook foods which are normally broiled.
Preheating is not required when using broil. All
foods should be turned at least once except fish,
which does not need to be turned.
Convection Bake / Roast Mode
Upper element, lower element, Rear element and
fan operate during convection bake. Convection
bake should be used for cooking casseroles and
roasting meats. Oven should be preheated for
best results when using convection bake. Pans
do not need to be staggered. Cooks
approximately 25% quicker than bake.
Cooking Guide
Refer to the owners manual for recommendations
of times and temperatures. Times, rack position,
and temperatures may vary depending on
conditions and food type. For best results, always
check food at minimum time. When roasting,
choose rack position based on size of food item.
Broil element
Convection
element
Bake element

2-2
USING YOUR OVEN
CONTROL PANEL OVERVIEW
UPPER OVEN
1. UPPER TIMER ON/OFF: Use to set or cancel the timer of
the upper oven.
2. UPPER LIGHT: Use to turn the oven lights of the upper
oven on and off.
3. UPPER CLEAR/OFF: Use to stop cooking, cancel
settings of the upper oven.
4. CONV. BAKE: Use to select the Convection Bake
function of the upper oven.
5. CONV. ROAST: Use to select the Convection Roast
function of the upper oven.
6. CRISP CONV.: Use to select the Crisp Convection
function of the upper oven.
7. WARM/PROOF: Use to select the Warm/Proof function of
the upper oven.
8. SELF CLEAN: Use to select the Self Clean function of
the upper oven.
9. BAKE: Use to select the Bake function of the upper oven.
10. ROAST: Use to select the Roast function of the upper
oven.
11. BROIL: Use to select the Broil function of the upper
oven.
12. FAVORITE: Use to select the Favorite function of the
upper oven.
13. EasyClean®: Use to select the Easy Clean function of
the upper oven.
LOWER OVEN
14. LOWER TIMER ON/OFF: Use to set or cancel the timer
of the lower oven.
15. LOWER LIGHT: Use to turn the oven lights of the lower
oven on and off.
16. LOWER CLEAR/OFF: Use to stop cooking, cancel
settings of the lower oven. To activate OVEN LOCK
press and hold for 3 seconds.
17. CONV. BAKE: Use to select the Convection Bake
function of the lower oven.
18. CONV. ROAST: Use to select the Convection Roast
function of the lower oven.
19. CRISP CONV.: Use to select the Crisp Convection
function of the lower oven.
20. WARM/PROOF: Use to select the Warm/Proof function
of the lower oven.
21. SELF CLEAN: Use to select the Self Clean function of
the lower oven.
22. BAKE: Use to select the Bake function of the lower
oven.
23. ROAST: Use to select the Roast function of the lower
oven.
24. BROIL: Use to select the Broil function of the lower
oven.
25. FAVORITE: Use to select the Favorite function of the
lower oven.
26. EasyClean®: Use to select the Easy Clean function of
the lower oven.
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READ THE INSTRUCTIONS CAREFULLY BEFORE USING THE OVEN. For satisfactory use of the
oven, become familiar with the various features and functions of the oven as described below. Detailed
instructions for each feature and function are listed in this owner's manual.
LWD3063ST/00
LWD3063BD/00

2-3
USING YOUR OVEN
COMMON FUNCTION
27. SETTING: Access and adjust oven settings. See pages
14 and 15.
28. CLOCK: Use to set the time of day.
29. COOK TIME: Use to set the length of the cook time.
(Bake, Conv. Bake/Roast only)
30. START TIME: Use to set delay time. (Bake, Conv. Bake/
Roast, Self Clean only)
31. NUMBER PADS: Use to enter a temperature and all
times.
32. START: Use to START all functions in the oven. To
activate OVEN LOCK press and hold for 3 seconds.
33. SMART FEATURES: The Tag On icon, for use with
Smart Features.
34. SMART DIAGNOSIS™: Use with the Smart Diagnosis
feature.
NOTE
If F– and a number appear in the display and the oven
control signals, this indicates a function error code.
See page 00.
•Touch the UPPER or LOWER CLEAR/OFF pad.
• Allow the oven to cool for one hour. Put the oven back
into operation.
•If the function error code repeats, disconnect the power to
the oven and call for service.
•If your oven was set for a timed oven operation and a
power outage occurred, the clock and all programmed
functions must be reset.
•The time of day will flash in the display when there
has been a power outage.

2-4
USING YOUR OVEN
CONTROL PANEL OVERVIEW
UPPER OVEN
1. UPPER TIMER ON/OFF: Use to set or cancel the timer of
the upper oven.
2. UPPER LIGHT: Use to turn the oven lights of the upper
oven on and off.
3. UPPER CLEAR/OFF: Use to stop cooking, cancel
settings of the upper oven.
4. CONV. BAKE: Use to select the Convection Bake
function of the upper oven.
5. CONV. ROAST: Use to select the Convection Roast
function of the upper oven.
6. CRISP CONV.: Use to select the Crisp Convection
function of the upper oven.
7. WARM/PROOF: Use to select the Warm/Proof function of
the upper oven.
8. SELF CLEAN: Use to select the Self Clean function of
the upper oven.
9. BAKE: Use to select the Bake function of the upper oven.
10. ROAST: Use to select the Roast function of the upper
oven.
11. BROIL: Use to select the Broil function of the upper
oven.
12. FAVORITE: Use to select the Favorite function of the
upper oven.
13. EasyClean®: Use to select the Easy Clean function of
the upper oven.
LOWER OVEN
14. LOWER TIMER ON/OFF: Use to set or cancel the timer
of the lower oven.
15. LOWER LIGHT: Use to turn the oven lights of the lower
oven on and off.
16. LOWER CLEAR/OFF: Use to stop cooking, cancel
settings of the lower oven.
17. CONV. BAKE: Use to select the Convection Bake
function of the lower oven.
18. CONV. ROAST: Use to select the Convection Roast
function of the lower oven.
19. CRISP CONV.: Use to select the Crisp Convection
function of the lower oven.
20. WARM/PROOF: Use to select the Warm/Proof function
of the lower oven.
21. SELF CLEAN: Use to select the Self Clean function of
the lower oven.
22. BAKE: Use to select the Bake function of the lower
oven.
23. ROAST: Use to select the Roast function of the lower
oven.
24. BROIL: Use to select the Broil function of the lower
oven.
25. FAVORITE: Use to select the Favorite function of the
lower oven.
26. EasyClean®: Use to select the Easy Clean function of
the lower oven.
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READ THE INSTRUCTIONS CAREFULLY BEFORE USING THE OVEN. For satisfactory use of the
oven, become familiar with the various features and functions of the oven as described below. Detailed
instructions for each feature and function are listed in this owner's manual.
LWD3063ST/01
LWD3063BD/01

2-5
USING YOUR OVEN
COMMON FUNCTION
27. SETTING: Access and adjust oven settings. See pages
14 and 15.
28. CLOCK: Use to set the time of day.
29. COOK TIME: Use to set the length of the cook time.
(Bake, Conv. Bake/Roast only)
30. START TIME: Use to set delay time. (Bake, Conv. Bake/
Roast, Self Clean only)
31. NUMBER PADS: Use to enter a temperature and all
times.
32. START: Use to START all functions in the oven. To
activate OVEN LOCK press and hold for 3 seconds.
33. SMART DIAGNOSIS™: Use with the Smart Diagnosis
feature.
34. REMOTE STRAT: The pre-heating function of the oven
can be started or stopped using LG Smart ThinQ smart
phone app.
To activate Wi-Fi press and hold for 3 seconds.
NOTE
If F– and a number appear in the display and the oven
control signals, this indicates a function error code.
See page 00.
•Touch the UPPER or LOWER CLEAR/OFF pad.
• Allow the oven to cool for one hour. Put the oven back
into operation.
•If the function error code repeats, disconnect the power to
the oven and call for service.
•If your oven was set for a timed oven operation and a
power outage occurred, the clock and all programmed
functions must be reset.
•The time of day will flash in the display when there
has been a power outage.

2-6
SAFETY
1. SETTING THE CLOCK
1) Press CLOCK once.
2) Press the numbers to enter the correct time of
day. For example, to set 12:34, press the
numbers 1, 2, 3 and 4.
If the numbers are not pressed within 25 seconds
of pressing CLOCK, the display reverts to the
original setting.
3) Press START. This enters the time and starts the
clock.
2. START, CLEAR/OFF
1) START key to start oven
2) Select "OFF" to cancel a program during cooking
or erase during programming.
3. OVEN LIGHT [UPPER / LOWER]
1) Requirement: The Oven Light is used to turn on
or off the oven light.
2) Key Input Process: Oven Light operation.
If the Oven Light is on by pressing oven light key,
the light is on even if the door is closed. Oven
light key can be operated while door opens.
4. SETTING THE TIMER
(EXAMPLE TO SET 5 MINUTES):
1) Press UPPER or LOWER TIMER ON/OFF once.
0:00 with HR inside appears and TIMER flashes
in the display.
2) Press number 5.
0:05 appears in the display.
3) Press TIMER to start the Timer.
The display shows the set time counting down.
4) When the set time has run out, End shows in the
display. The indicator tones sound every 6
seconds until UPPER or LOWER TIMER ON/
OFF is pressed.
5. CONTROL LOCKOUT
1) The PROBE key controls the Control Lock
feature. The Control Lock feature automatically
locks most oven controls from being turned ON. It
does not disable the timer and the interior oven
light. The Control Lock feature will cancel the
cooking mode and will lock the oven controls at
any time when you activate this feature.
2) Key Input Process : PROBE (for 4 seconds)
Lock melody will sound.
3) To unlock the control, press PROBE (for 4
seconds)
Unlock melody will sound.
6. SPECIAL FUNCTION: 8 TYPES OF
CATEGORY
NOTE
If the remaining time is not in the display, recall
the remaining time by pressing the UPPER or
LOWER TIMER ON/OFF.
•Set the time in seconds by pressing UPPER
or LOWER TIMER ON/OFF twice. (For
example, press 5 and 0 to set 50 seconds.)
•Set the time in minutes by pressing UPPER or
LOWER TIMER ON/OFF once. (For example,
press 5 to set 5 minutes.)
1) CONVECTION AUTO CONVERSION
1. Press SETTING twice. AUTO appears in the
display.
2. Press 1 to enable or 2 to disable.
3. Press START to accept the change.

2-7
SAFETY
2) THERMOSTAT ADJUSTMENT for Lower oven
(For the Lower Oven)
1.Press SETTING three times or until L-AJ
appears in the display.
2.Enter the desired temperature adjustment.
Example: to adjust the oven temperature UP
15 degrees, enter 15.
3. Press START to accept the change.
4.
To lower the oven temperature enter 15
then press SETTING to DECREASE the
temperature, (add a minus sign).
5. Press START to accept the change.
3) THERMOSTAT ADJUSTMENT for Upper oven
(For the Upper Oven)
1.Press SETTING four times or until U-AJ
appears in the display.
2. Enter the desired temperature adjustment.
Example: to adjust the oven temperature UP
15 degrees, enter 15.
3. Press START to accept the change.
4. To lower the oven temperature enter 15 then
press SETTING to DECREASE the
temperature, (add a minus sign).
5. Press START to accept the change.
4) LANGUAGE SELECTION
1. Press SETTING five times or until Lng
appears in the display.
2. Press 1 for English, 2 for Spanish, or 3 for
French.
3. Press START to accept the change.
5) PREHEAT ALRAM LIGHT ON/OFF
1. Press SETTING six times or until "PrE"
appears in the display.
2. Press 1 to turn on and 2 to turn off the alarm.
3. Press START to accept the change.
6) TEMPERATURE UNIT (°F or °C)
1. Press SETTING seven times or until BEEP
appears in the display.
2. Press 1 for LOUD, 2 for LOW, and 3 for
MUTE.
3. Press START to accept the change.
7) BEEPER VOLUME
1. Select all oven mode knob to OFF position.
2. Press and hold the START TIME button for 3
seconds.
3. Press the START TIME button 7 times.
4. To adjust Time/Temp knob to desired volume.
(Hi, Lo, Mute)
5. Press the START button.
8. BAKE
9. BROIL
10 ROAST
Select
"BAKE"
(Set the desired temp.) START
Select
"BROIL"
Touch #1,#2,#3
(Select desired Broil Full (High/
Med/Low) /Center(High/Med/Low)
START
Select
"ROAST"
(Set the desired temp.) START

11. CONVECTION BAKE
12. CRISP CONVECTION
13. CONVECTION ROAST
14. TIMED COOK, DELAYED TIMED COOK
15. WARM
16. PROOF
17. SELF CLEAN
18. EASY CLEAN
2-8
USING YOUR OVEN
Select
"ROAST"
(Set the desired temp.) START
Select "CONV.
BAKE"
(Set the desired temp.) START
Select "CONV.
ROAST"
(Set the desired temp.) START
Select
"BAKE"
(Set the desired temp.) START
COOK TIME (Set the desired time) START
START
TIME
(Set the desired time) START
START
TIME
(Set the desired start time.) START
Select
"WARM"
Touch #1,#2,#3
(Set the desired temp. High/Med/Low)
START
Select
"PROOF"
(Set the desired time) START
Select
"SELF CLEAN"
(Set the desired time 3/4/5) START
Select
"EASY CLEAN" START

This section instructs you on how to service each component inside the range. The components and their
locations are shown below.
COMPONENT LOCATIONS
Lower Door Switch
Upper Door Switch
Upper Oven Light
inge nger
inge nger
Upper Door Ltch
e
Lower Door Ltch
e
Lower Oven Light
D
Oven Senor
e 
onvection oto r
onvection eter
e eter
roi eter
Oven Senor
onvection oto r
onvection eter
e eter
in  
3-1
DISASSEMBLY INSTRUCTIONS

3-2
DISASSEMBLY INSTRUCTIONS(UPPER)
1. Turn off the electrical supply going to the oven.
2. Open the upper door assembly.
3. Remove the 3 screws from below the control
panel.
6. Disconnect the connectors from PCB assembly
and separate control panel carefully.
7.
You can see the interior of electric parts chamber.
8. To remove the following components follow the
sequence below.
Main PCB, Relay PCB, Door lock motor,
Halogen lamp LVT can be serviced without
removing the oven.
1) To remove the Relay PCB.
Remove the 1 screw and slide Main PCB out.
REPLACING THE CONTROL PANEL AND RELATED COMPONENTS
WARNING
• ELECTRIC SHOCK HAZARD
- Unit must be disconnected from electrical
outlet when making repairs, replacements,
adjustments. Replace all panels before
operating oven. Failure to do so can result
in death or electrical shock.
CAUTION
• Be careful when you work on the
electric oven handling the sheet
metal part.
4.Close the upper door assembly.
5. Lift the control panel off from the guide hooks
and top trim. Tilt the control panel down.
Hinge panel into slots on main body and let
control panel rest.
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Guide hole
Hook
Hook
Hook
Hook
Hook
Hook
Hook
Hook
Hook
Hook
Hook
Hook
Hook
Hook
Hook
Hook
Hook
Hook
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Relay
PCB
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Door lock
motor
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
Halogen lamp
LVT
SMPS
PCB
SMPS
PCB
SMPS
PCB
SMPS
PCB
SMPS
PCB
Main
PCB
SMPS
PCB
Main
PCB
SMPS
PCB
Main
PCB
SMPS
PCB
Main
PCB
SMPS
PCB
Main
PCB
Main
PCB
SMPS
PCB
Main
PCB
SMPS
PCB
Main
PCB
SMPS
PCB
Main
PCB
Main
PCB