LG LREL6321S User manual

Condential
MFL71688305_Rev00. 05142020
30" FREESTANDING
ELECTRIC RANGE
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODEL: LREL6321S
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 © 2020 LG Electronics Inc. All rights reserved. Only training and service purposes

Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
This LG Service Manual, “30” Freestanding Electric Range,” provides the technician with
information on the operation and service of the Freestanding Electric Range. 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 range.
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 left side of warming drawer.
• 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.

Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
TABLE OF CONTENTS
(Page)
GENERAL ------------------------------------------------------------------------------------------------ 1-1 ~ 1-5
• Important safety instructions ------------------------------------------------------------------------------------------ 1-1 ~ 1-3
• Model & Serial number label and tech sheet locations ------------------------------------------------------------- 1-4
• Specifications ---------------------------------------------------------------------------------------------------------------------- 1-5
USING YOUR RANGE ---------------------------------------------------------------------------- 2-1 ~ 2-4
• General information -------------------------------------------------------------------------------------------------------------- 2-1
• Control panel features -------------------------------------------------------------------------------------------------- 2-2 ~ 2-4
- To turn on a single surface unit (Right Rear, Left Rear)
- To turn on a daul surface unit(Left Front, Right Front)
- To set the warming zone control
- Setting the Clock
- Start, Clear/Off and On/Off pad
- To turn On/Off the oven light
- Timer On/Off
- Oven Temperature Adjustment
- Preheating Alarm Light On/Off
- Beeper Volume
- Temperature Unit(°F or °C)
- Bake, Timed Bake, Delayed Timed Bake
- Broil
- Warm
- Changing hour mode on clock (12HR, 24HR)
- Easy Clean
- Auto Conversion
COMPONENT ACCESS ------------------------------------------------------------------------ 3-1 ~ 3-14
• Component Locations ---------------------------------------------------------------------------------------------------------- 3-1
• Removing the Rear, Motor Cover and Control Assembly ----------------------------------------------------------- 3-2
• Removing PCBs (Main PCB and Main PCB, Tact&Display PCB and Wifi PCB) -------------------------- 3-3
• Removing the Surface Element and the Ceramic Glass Cooktop -------------------------------------------- 3-4
• Removing the Broil Element --------------------------------------------------------------------------------------------------- 3-5
• Removing the Hidden Bake Element --------------------------------------------------------------------------------------- 3-6
• Removing the Oven light & Socket assembly -------------------------------------------------------------------------- 3-7
• Removing the Oven temperature Sensor -------------------------------------------------------------------------------- 3-8
• Removing & Replacing the Drawer
---------------------------------------------------------------------------------------- 3-9
• Removing & Replacing the Lift-off Oven Door ----------------------------------------------------------------------- 3-10
• Removing the Oven Door Handle -------------------------------------------------------------------------------- 3-11~3-12
• Removing the Oven Door Gasket ---------------------------------------------------------------------------------------- 3-13
• Removing the Side Panel ---------------------------------------------------------------------------------------------------- 3-14

Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
(Page)
COMPONENT TEST -------------------------------------------------------------------------------- 4-1 ~ 4-6
• Micro Switch ----------------------------------------------------------------------------------------------------------------------- 4-1
• Oven Sensor --------------------------------------------------------------------------------------------------------------------- 4-1
• Door switch ------------------------------------------------------------------------------------------------------------------------ 4-2
• Oven lamp ------------------------------------------------------------------------------------------------------------------------- 4-2
• Bake heater ------------------------------------------------------------------------------------------------------------------------ 4-2
• Broil heater -------------------------------------------------------------------------------------------------------------------------- 4-2
• Single surface unit(LR, RR) ------------------------------------------------------------------------------------------------ 4-3
• Dual surface unit(LF,RF) ------------------------------------------------------------------------------------------------------- 4-4
• Center Rear(CR): Warming Zone ---------------------------------------------------------------------------------------- 4-5
COMPOSITION OF CONTROL ---------------------------------------------------------------- 5-1 ~ 5-3
• Wiring Diagram -------------------------------------------------------------------------------------------------------------------- 5-1
• Key Matrix --------------------------------------------------------------------------------------------------------------------------- 5-2
• Main PCB ---------------------------------------------------------------------------------------------------------------------------- 5-3
• Tact & Display PCB --------------------------------------------------------------------------------------------------------------- 5-3
• LED Module ------------------------------------------------------------------------------------------------------------------------ 5-3
CHECK THE FAILURE CODE -------------------------------------------------------------------------- 6-1
FAILURE CODE SUMMARY
---------------------------------------------------------------------------- 7-1
BASIC CHECK SUMMARY
------------------------------------------------------------------------------- 8-1
CHECKING FLOW CHART BY FAILURE
----------------------------------------------- 9-1 ~ 9-14
• Power Failed(Dead), No display? ---------------------------------------------------------------------------------- 9-1 ~ 9-4
• No heating, F9? ---------------------------------------------------------------------------------------------------------- 9-5 ~ 9-9
• Sensing Fail, F1, F2? ---------------------------------------------------------------------------------------------- 9-10 ~ 9-12
• Oven hot, F-6? -------------------------------------------------------------------------------------------------------- 9-13 ~ 9-15
• Keypad Failure, F3 error? ---------------------------------------------------------------------------------------- 9-16 ~ 9-17
TROUBLE SHOOTING ------------------------------------------------------------------------ 10-1 ~ 10-3
EXPLODED VIEW
------------------------------------------------------------------------------- 11-1 ~ 11-6

1-1
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
GENERAL
IMPORTANT SAFETY INSTRUCTIONS
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
• DO NOT step or sit on the door and install the Anti-Tip Bracket packed with range.
- The range could be tipped and injury might result from spilled hot liquid, food, or the range itself.
- If the range is pulled away from the wall for cleaning, service, or any other reason, ensure that the Anti-Tip
Device is properly reengaged when the range is pushed back against the wall.
• 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 heating elements or interior surfaces of oven.
-Heating element 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.
• DO NOT store items of interest to children in cabinets above a range or on the back guard of a range.
- Children climbing on the range to reach items could be seriously injured.
!
CAUTION
• Always use Pot Holders or oven mitts when removing food from the Warming Drawer.
- You can be burned as cookware and plates will be hot.
• Be careful when you work on the electric range handling the sheet metal part.
- Sharp edge may be present and you can cut yourself.
• Be careful not to bend the fan blade
- Failure to do so can result in vibration, noise, and poor performance of convection when operating.
• Be careful not to scratch or chip the oven liner paint when you remove the oven light socket
in the next step.
• Turn power OFF before removing the Warming Drawer.
• Be careful when removing and lifting the door.
• DO NOT lift the door by the handle.
- Failure to do so can result in personal injury as the door is very heavy.

1-2
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
GENERAL
IMPORTANT SAFETY INSTRUCTIONS
• Be sure 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
removing the fuse or switching off the circuit breaker
To reduce the risk of tipping of the range, the range must be
secured by properly installed anti-tip devices. To check if the
bracket is installed properly,
- Warming drawer : grasp the top rear edge of the Range and
carefully attempt to tilt it forward.
verify that the anti-tip devices are engaged.
- Storage drawer : Remove drawer and verify leveling leg is
inserted into and fully secured by the anti-tip devices.
Refer to the installation manual for proper anti-tip bracket
installation.
WARNING
• DO NOT touch heating elements or
interior surfaces of oven.
-Heating element 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.
!!
WARNING
• DO NOT store items of interest to
children in cabinets above a range or
on the back guard of a range.
- Children climbing on the range to reach items
could be seriously injured.
!!
WARNING
• DO NOT step or sit on the
door and install the Anti-Tip
Bracket packed with range.
- The range could be tipped and injury
might result from spilled hot liquid,
food, or the range itself.
- If the range is pulled away from the
wall for cleaning, service, or any other
reason, ensure that the Anti-Tip Device
is properly reengaged when the range
is pushed back against the wall.
!!

1-3
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
GENERAL
SURFACE COOKING UNITS
• Use Proper Pan Size – This appliance is equipped with one or more
surface units of different sizes. Select utensils having flat bottoms large
enough to cover the surface unit heating element. The use of
undersized utensils will expose a portion of the heating element to
direct contact and may result in ignition of clothing. Proper relationship
of utensil to burner will also improve efficiency.
• Never Leave Surface Units Unattended at High Heat Settings –
Boil overs may cause smoking and greasy spillovers may ignite.
• Make Sure Reflector Pans or Drip Bowls Are in Place – Absence of
these pans or bowls during cooking may subject wiring or components
underneath to damage.
• Protective Liners – Do not use aluminum foil to line surface unit drip
bowls or oven bottoms, except as suggested in the manual. Improper
installation of these liners may result in a risk of electric shock, or fire.
• Glazed Cooking Utensils – Only certain types of glass, glass/ceramic,
ceramic, earthenware, or other glazed utensils are suitable for range-
top service without breaking due to the sudden change in temperature.
• Utensil Handles Should Be Turned Inward and Not Extend Over
Adjacent Surface Units – To reduce the risk of burns, ignition of
flammable materials, and spillage due to unintentional contact with the
utensil, the handle of a utensil should be positioned so that it is turned
inward, and does not extend over adjacent surface units.
• Do Not Soak Removable Heating Elements – Heating elements
should never be immersed in water.
• Be sure you know which control pads operate each surface unit.
Make sure you turned on the correct surface unit.
IMPORTANT SAFETY INSTRUCTIONS
VENTILATING HOODS:
• Clean Ventilating Hoods Frequently – Grease should
not be allowed to accumulate on hood or filter.
• When flaming foods under the hood, turn the fan on.
OVEN
• 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 is located
above the left rear surface unit. this area could become hot during
oven use. Never block this vent and never place plastic or heat-
sensitive items on vent
• Placement of Oven Racks – Always place oven racks in desired
location while oven is cool. If rack must be moved while oven is
hot, do not let potholder contact hot heating element in oven.
• Do Not allow aluminum foil or meat probe to contact heating
elements.
GLASS/CERAMICCOOKINGSURFACES
• Do Not Cook on Broken Cook-Top – If cook-top should break,
cleaning solutions and spillovers may penetrate the broken cook-
top and create a risk of electric shock. Contact a qualified
technician immediately.
• Clean Cook-Top With Caution – If a wet sponge or cloth is used
to wipe spills on a hot cooking area, be careful to avoid steam
burn. Some cleaners can produce noxious fumes if applied to a
hot surface.
DEEP FAT FRYERS:
• Use extreme caution when moving the grease kettle or disposing
of hot grease.
• Do Not Leave Children Alone - Children should not be left alone or
unattended in area where appliance is in use. They should never be
allowed to sit or stand on any part of the appliance.
• Never Use Your Appliance for Warming or Heating the Room.
• Storage in or on Appliance – Flammable materials should not be stored
in an oven or near surface units. Be sure all packing materials are
removed from the appliance before operating it. Keep plastics, clothes
and paper away from parts of the appliance that may become hot
• Wear Proper Apparel – Loose-fitting or hanging garments should never
be worn while using the appliance.
• Do Not Use Water on Grease Fires – Turn off oven to avoid spreading
the flame. Smother the fire or flame by closing the door or use dry
chemical, baking soda or foam- type extinguisher.
• Use Only Dry Potholders – Moist or damp potholders on hot surfaces
may result in burns from steam.
Do not let potholder touch hot heating elements. Do not use a towel or
other bulky cloth.
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.
!!

1-4
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
GENERAL
The Model/Serial Number label and Tech Sheet locations are shown below.
Model & Serial
Number Location
MODEL & SERIAL NUMBER LABEL
AND TECH SHEET LOCATIONS
Tech Sheet Location
(On Rear Cover)

1-5
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
GENERAL
SPECIFICATIONS
Model Number LREL6321S
Category Non Convection
Overall
Control
Cooktop
Power
Oven
Drawer
Dimensions
(inch)
Power
Width
Installation type
Color availability
Oven
Cooktop
Display
Electronic clock & timer
Control lock capability
Audible preheat signal
Special function
Material
# of element
LR
RR
CR
LF
RF
Capacity(cu.ft)
Broil element
Bake element
Convection System
# of Racks
Interior oven light
Proof
Cook & warm
Favorites
Easy clean
Door lockout
Broiler pan
Type
Element
Oven Interior(W x H x D)
Exterior - Width
Exterior - Height
Exterior - Depth
Net weight: Lbs (Kg)
Rating
30"
Freestanding
STS
Keypad
Knob
LED
Yes
Yes
Yes
Setting (6 categories)
1. Set the hour mode on the clock (12 or 24 hours)
2. Adjust the oven temperature
3. Activate/deactivate the preheating alarm light
4. Set the beeper volume (Hi, Lo, Off)
5. Switch the temperature scale between Fahrenheit and Celsius
(℉/℃)
Ceramic glass
5
6"-1,200
6"-1,200
warming zone
Dual(6”/9”-1,400/3,200 watts)
Dual (6”/9” -1,400/3,200 watts)
6.3
4200 watts
3400 watts
No
2 Standard
auto / manual
No
No
No
Yes
No
No
Storage drawer
24 7/8 x 21 3/8 x 20
29 7/8
36 (cooktop), 47 5/8 (backguard top)
26 1/2 (Door), 28 15/16 (with handle)
144.2lbs (65.4kg)
120/240V : 13.1 kW , 120/208V : 9.8 kW

2-1
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
USING YOUR RANGE
Rating Label
Model numbers are recorded on the rating label.
Rating label is located on the lower front left corner
of the oven frame. It can be seen by opening the
storage drawer or warming drawer. 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.
Broil Mode
Top element operates during broil. Broil can be
used to cook foods which are normally broiled. All
foods should be turned at least once except fish,
which does not need to be turned.
GENERAL INFORMATION
Broil element
Hidden bake
element
Broil element
Hidden bake
element

2-2
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
USING YOUR RANGE
CONTROL PANEL FEATURES
1
Features
2
Oven Control
3
Number Keys or +/- buttons
4
Start button
5
Clear Off / Lockout button
6
Smart Diagnosis™
7
Cooktop Control
COOKTOP HOT Indicator
The COOKTOP HOT indicator appears in the
display as long as any surface cooking area is too
hot to touch. It remains on after the element is
turned off and until the surface has cooled to
approximately 150 ˚F. The COOKTOP HOT
indicator also appears during the self clean cycle.
Flashing Time
If your oven displays a flashing clock, press Clock
or press any key to stop the flashing.
Model LREL6321**
8

2-3
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
To turn on a single surface unit
(Right Rear, Left Rear)
1. Push the Single element knob in.
2. Turn the knob in either direction to the desired
setting.
The control knob clicks when it is positioned at
both Off and Hi.
To turn on a dual surface unit
(Left Front, Right Front)
1. Push in the appropriate knob.
2. Turn the knob clockwise to use it as a Dual unit.
To set the warming zone control
1. Press the COOKTOP Set/Off button.
The warming zone indicator light flashes.
2. Use the Level buttons to adjust the temperature
settings. The temperature settings are
adjustable at all times.
3 To turn off the warming zone, press the Set/Off
button once.
Note:
• The warmer will not glow red like the other cooking
elements.
• The Warming Zone can be operated as a single element on
some models.
• The controls for the warming zone allow for 3
different heat settings : Lo~Hi
• “HS” will appear when the unit is hot to touch.
1. SETTING THE CLOCK
2. START, CLEAR/OFF AND ON/OFF PAD
1. Touch START key to start oven.
2. Touch CLEAR/OFF key to cancel a program
during cooking or Erase during programming.
USING YOUR RANGE
3. TO TURN ON/OFF THE OVEN LIGHT
The oven light automatically turns ON when the
door is opened.
1. The oven light may also be manually turned ON
or OFF by press the OVEN LIGHT key.
2. Knocking twice on the glass panel turns the
interior light on or off.
Note:
1. The oven light cannot be turned on if self-clean feature is
active.
2. The light turns off automatically after 90 seconds.
4. TIMER ON/OFF
To cancel timer at any time, touch TIMER ON/OFF key.
Note:
1. If you press TIMER ON/OFF key once, this allows you to
select "minutes"
(for example: if you press “5” and “6”, it means 56 minutes)
2. If you press TIMER ON/OFF key twice, this allows you to
select "seconds"
(for example: if you press “5” and “6”, it means 56 seconds)
5. OVEN TEMPERATURE ADJUSTMENT
The oven temperature can be adjusted from
-35°F (-19°C) to 35°F (19°C).
Note: The oven temperature adjustments made with this
feature will just change Bake, temperature.
1. Press Settings repeatedly until AdJU appears in the
display.
2. Use the number keys to enter the number of degrees
you want to adjust the oven temperature. Press
Settings again to add a minus sign if decreasing the
temperature.
3. Press Start to accept the change.
CLEAR
/OFF
PRESS
CLOCK
Desired
Time START
TIMER
ON/OFF
Desired
time
TIMER
ON/OFF
A
B
D

2-4
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
11. KEEP WARM
12. CHANGING HOUR MODE ON CLOCK
(12HR, 24HR)
13. Easy Clean
14. AUTO CONVERSION
USING YOUR RANGE
6. PREHEATING ALARM LIGHT ON/OFF
1. Press Settings repeatedly until PrE appears in
the display.
2. Press 1 to turn the light on/off.
3. Press Start to accept the change.
7. BEEPER VOLUME
1. Press Settings repeatedly until Beep appears in
the display.
2. Press 1repeatedly to select Hi, Lo or Off.
3. Press Start to accept the change.
8. TEMPERATURE UNIT(°F OR °C)
1. Press Settings repeatedly until Unit appears in
the display.
2. Press 1to select F(Fahrenheit) or C(Celsius).
3. Press Start to accept the change.
9. BAKE, TIMED BAKE, DELAYED TIMED BAKE
* This feature can also be used with the:
CONVECTION BAKE and CONVECTION ROAST
modes.
10. BROIL
START
KEEP WARM
Press Settings repeatedly until Auto appears in
the display.
Press and hold the Settings button for 3
seconds
Press 1 to select 12 or 24
hour. START
Press 1 Auto conversion
On/off START
BAKE Desired
temperature START
COOK
TIME Desired time START
START
TIME
Desired
start time START
START
ONCE
TWICE
HIGH
LOW
EASY CLEAN START

3-1
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
COMPONENT ACCESS
This section instructs you on how to service each component inside the range. The components and their
locations are shown below.
COMPONENT LOCATIONS
Oven Sensor
Oven Light
Surface Elements
Main PCB
Hinge Hanger
Door Switch
Bake Heater
Broil Heater

3-2
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
5. Separate PCB assembly after unpluging the ‘17
connectors.
6. Remove a cooktop plate assembly (See the page
3-6) and remove 6.
7. Remove the 11 Screws on the controller
assembly and remove the assemblies in order.
8. Replace the control panel assembly.
COMPONENT ACCESS
1. Turn off the electrical supply going to the range.
2. Pull the range away from the wall so that you can
access the rear panel.
3. Remove two wire covers by removing the screw.
4. Remove the 20 screws from the rear cover and
remove the cover.
REMOVING THE REAR, MOTOR COVER
AND CONTROL ASSEMBLY
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.
!!
CAUTION
• Be careful when you work on the electric
range handling the sheet metal part.
- Sharp edge may be present and you can cut
yourself.
!!
Control Cover
Rear Cover
Motor Cover
4 Connectors 2 Connectors
Main PCB
(5 Connectors)
2 Connectors 2 Connectors
122
Main PCB
Support Control panel AssemblyBarrier
Regulator
Support

3-3
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
COMPONENT ACCESS
REMOVING PCBS
(MAIN PCB, TACT&DISPLAY PCB AND WIFI PCB)
1. Turn off the electrical supply going to the range.
2. Pull the range away from the wall so that you can
access the rear panel.
3.Remove the lamp, controller and back cover.
(See the page 3-2)
4. When you check PCB, check the proper PCB in
default mode and check main PCB..
NOTE: Refer to the page 5-1~5-5 for
composition of control board.
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.
!!
CAUTION
• Be careful when you work on the
electric range handling the sheet
metal part.
- Sharp edge may be present and you can cut
yourself.
!!
Main PCB
Tact&Display
PCB
Wi-Fi PCB

3-4
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
To remove the surface
elements
a) Remove the wires from
the element and limiter
terminals.
b) Remove the element
brackets for the element you are servicing and
the element can be detached.
REASSEMBLY NOTE: When you reinstall the
element, make sure that the wires are inserted into
the correct tap and that the brackets are secured
firmly. When wiring, refer to the technical card in
order to prevent wires and connectors from
mismating.
COMPONENT ACCESS
CERAMIC GLASS COOKTOP REMOVAL
Step. 1
Unplug the cord or disconnect power
Step. 2
Remove lamp, controller and back cover
(See the page 3-2)
Step. 3
Remove wiring from the
cooktop assembly.
Step. 4
Open oven door and remove the 3screws located at
the front of the cook-top, then close the door.
Step. 5
Lift up the cooktop
assembly and turn the
cooktop assembly over
(protect the cooktop
surface).
REMOVING THE SURFACE ELEMENTS
AND THE CERAMIC GLASS COOKTOP
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.
!!
Step. 6

3-5
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
COMPONENT ACCESS
REMOVING THE BROIL ELEMENT
1. Turn off the electrical supply going to the range.
2. Open the oven door and remove the racks from
inside the oven.
3. To remove the outer broil element:
a) Remove the 4 screws from the front and rear
brackets.
b) Pull the element forward so that you can
access the terminals and disconnect the wires.
2 front bracket screws
3 terminals(Broil heater/thermistor)
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.
!!
CAUTION
• Be careful when you work on the
electric range handling the sheet
metal part.
- Sharp edge may be present and you can cut
yourself.
!!

3-6
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
7. Bend a insulation ceramic wool up and bend 2
flanges up.
8. Carefully pull the hidden bake element out of the
range.
NOTE: After replacing the bake element, assemble
by rotating the baking heater cover 180
degrees. (shown as below: assembly
sequence 1→2)
COMPONENT ACCESS
1. Unplug range or disconnect power.
2. Pull the range out of its mounting location so that
you can access the rear of the unit.
3. Remove rear and motor cover
(See the page 3-2)
4. Remove 4 screws and a powercord.
5. Remove 8 screws and detach the bake heater
cover from the range. Disconnect 2 wiring (2 bake
heater receptacles)
6. Use the nipper to cut the 10 connections on the
Bake heater cover and Rear panel.
REMOVING THE HIDDEN BAKE ELEMENT
Insulation ceramic wool
2 flanges
2 2
11
22

3-7
Copyright © LG Electronics Inc. All rights reserved.
Only training and service purposes
REMOVING THE OVEN LIGHT & SOCKET ASSEMBLY
To replace:
1. Turn off the electrical supply and gas supply
going to the range.
2. Turn the glass bulb cover in the back of the
oven counterclockwise to remove.
3. Pull the bulb out of the socket.
4. Insert a n bulb and replace bulb cover by
turning clockwise.
Glass cover & Bulb
Glass cover & Bulb
Outer Ring
Inner Ring
5. Use a screwdriver and bend the clips on the
oven light socket away from the edges of the
liner hole, and pull the socket out of the liner.
NOTE: If it is too difficult to remove the socket
from the front of the oven, you will have to push
the socket out from the back of the unit.
Socket Clips
6. Disconnect the wires from the socket terminals.
<Viewed From Rear Panel>
CAUTION
• Be careful not to scratch or chip the
oven liner paint when you remove
the oven light socket in the next
step.
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.
CAUTION
• Be careful when you work on the
gas range handling the sheet metal
part.
- Sharp edge may be present and you can cut
yourself.
COMPONENT ACCESS