LG LRE30451 Instrucciones de montaje
Service
Digital Appliance
TRAINING MANUAL
ELECTRIC RANGE
LRE30451
LRE30755
This LG Service Manual, “ 30” Freestanding Self-Cleaning Electric Range,” provides the
technician with information on the operation and service of the Freestanding Self-Cleaning
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 Electronices assumes no responsibility for any repairs made
on our products by anyone other than Authorized Service Technicians.
WARNING
•
To avoid risk of severe personal injury or death, disconnect power before working/servicing on
appliance to avoid electrical shock.
•
When the oven operates, the interior parts will be very hot.
!
(P
AGE
)
GENERAL
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1-1 ~ 1-4
• Important safety instructions
--------------------------------------------------------------------------------------
1-1 ~ 1-2
• Model & Serial number label and tech sheet locations
-----------------------------------------------------------
1-3
• Specifications
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1-4
USING YOUR RANGE
-------------------------------------------------------------------------
2-1 ~ 2-5
• General imformation
---------------------------------------------------------------------------------------------------------
2-1
• Control panel features
----------------------------------------------------------------------------------------------
2-2 ~ 2-5
- To turn on a single surface unit (Right Rear, Left Rear, Left Front)
- To turn on a dual surface unit (Right Front)
- To set the warming zone controlTo set the warming zone control
- Setting the Clock
- Start, Clean/Off and On/Off pad
- To turn On/Off the oven light
- Timer On/Off
- Options pad: 6 categories
1) Convection auto conversion
2) Thermostat adjustment
3) Language selection (English or Spanish )
4) Preheating alarm light On/Off
5) Beeper volume
6) Temperature unit (°F or °C)
-
Bake, Timed Bake, Delayed timed Bake
- Broil
- Convection Bake
- Convection Roast
- Favorites
- Cook & Warm
- Oven lockout
- Changing hour mode on clock (12HR, 24HR)
- Proof
- Self-Clean
- Warming drawer
COMPONENT ACCESS
---------------------------------------------------------------------
3-1 ~ 3-17
• Component Locations
------------------------------------------------------------------------------------------------------
3-1
• Removing the Back, Control cover and Key membrane Assembly
-------------------------------------------
3-2
• Removeing the Control Power Supply and Power Control Board (PCB)
-----------------------------------
3-3
• Removing the Surface Element and the Ceramic Glass Cooktop
-------------------------------------------
3-4
• Removing the Door Latch and the Door Switch
---------------------------------------------------------------------
3-5
• Removing the BROIL element
-------------------------------------------------------------------------------------------
3-6
• Removing the BAKE element
---------------------------------------------------------------------------------------------
3-7
• Removing the CONVECTION element, Fan blade and Fan motor
-------------------------------------------
3-8
• Removing the Oven light & Socket assembly
-----------------------------------------------------------------------
3-9
• Removing the latch drive assembly
-----------------------------------------------------------------------------------
3-10
- Door locking mechanism
----------------------------------------------------------------------------------------------
3-10
• Removing the Oven temperature Sensor
---------------------------------------------------------------------------
3-11
• Removing the Warming drawer element & temperature sensor
----------------------------------------------
3-12
• Removing & Replacing the Lift-off Oven Door
---------------------------------------------------------------------
3-13
• Removing the Oven Door Handle & Glass
----------------------------------------------------------------
3-14 ~ 3-15
• Removing the Oven Door Gasket
-------------------------------------------------------------------------------------
3-16
• Removing a Side Panel
---------------------------------------------------------------------------------------------------
3-17
TABLE OF CONTENTS
(Page)
COMPONENT TEST
-----------------------------------------------------------------------------
4-1 ~ 4-8
•
Convection Motor
-----------------------------------------------------------------------------------------------------------
4-1
•
Door locking Motor
---------------------------------------------------------------------------------------------------------
4-2
•
Micro Switch (normally open type)
-----------------------------------------------------------------------------------
4-2
•
LVT
-------------------------------------------------------------------------------------------------------------------------------
4-2
•
Oven Sensor
-----------------------------------------------------------------------------------------------------------------
4-3
•
Warming Drawer Sensor
------------------------------------------------------------------------------------------------
4-3
•
Door switch
-------------------------------------------------------------------------------------------------------------------
4-3
•
Broil element
-----------------------------------------------------------------------------------------------------------------
4-4
•
Bake element
----------------------------------------------------------------------------------------------------------------
4-4
•
Convection element
-------------------------------------------------------------------------------------------------------
4-4
•
Warming Drawer element
-----------------------------------------------------------------------------------------------
4-4
•
Oven lamp
--------------------------------------------------------------------------------------------------------------------
4-5
•
Single surface unit(LF, LR, RR)
--------------------------------------------------------------------------------------
4-6
•
Warming Zone
--------------------------------------------------------------------------------------------------------------
4-7
•
Dual surface unit(RF)
-----------------------------------------------------------------------------------------------------
4-8
COMPOSITION OF CONTROL
-------------------------------------------------------------
5-1 ~ 5-4
• Main PCB
-----------------------------------------------------------------------------------------------------------------------
5-2
• Cook-top display PCB
------------------------------------------------------------------------------------------------------
5-3
• Cook-top relay PCB
---------------------------------------------------------------------------------------------------------
5-4
• Oven relay PCB
---------------------------------------------------------------------------------------------------------------
5-4
FAILURE MODE FLOW CHART
------------------------------------------------------------
6-1 ~ 6-11
•
No display (No power)
--------------------------------------------------------------------------------------------
6-1 ~ 6-4
•
Oven does not heat
-----------------------------------------------------------------------------------------------
6-5 ~ 6-7
•
Cook-top does not heat
------------------------------------------------------------------------------------------
6-8 ~ 6-9
•
Oven lamp does not operate
-----------------------------------------------------------------------------------------
6-10
•
No key input
----------------------------------------------------------------------------------------------------------------
6-11
FAILURE CODES
------------------------------------------------------------------------------------------
7-0
F-CODE FLOW CHART
---------------------------------------------------------------------
7-1 ~ 7-10
•
F-1 error
------------------------------------------------------------------------------------------------------------------------
7-1
•
F-2 error
---------------------------------------------------------------------------------------------------------------
7-2 ~ 7-4
•
F-3, F-4 error
---------------------------------------------------------------------------------------------------------
7-5 ~ 7-6
•
F-5, F-6 error
---------------------------------------------------------------------------------------------------------
7-7 ~ 7-8
•
F-9 error
-------------------------------------------------------------------------------------------------------------
7-9 ~ 7-10
APPENDIX A (SCHEMATIC DIAGRAM OF PCB)
--------------------------------------------
8-1
TROUBLE SHOOTING
-------------------------------------------------------------------------
9-1 ~ 9-3
SCHEMATIC DIAGRAM
--------------------------------------------------------------------------------
10-1
• STRIP CIRCUITS
-------------------------------------------------------------------------------------------------
10-2 ~ 10-6
EXPLODED VIEW
----------------------------------------------------------------------------
11-1 ~ 11-8
REPLACEMENT PARTS LIST
---------------------------------------------------------
12-1 ~ 12-19
• 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.
• Do not step, lean or sit on the doors of the range -this can cause
the range to tip, resulting in burns or serious injuries.
• 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.
1-1
GENERAL
IMPOR
IMPORT
TANT SAFETY INSTRUCTIONS
ANT 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 symbol will help alert you to hazards or unsafe practices which could cause serious
bodily harm or death.
!
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 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.
WARNING
SURFACES
• DO NOT TOUCH SURFACE UNITS OR AREAS NEAR UNITS –
Surface units may be hot even though they are dark in color. Areas
near surface units may become hot enough to cause burns. During
and after use, do not touch, or let clothing or other flammable
materials contact surface units or areas near units until they have
had sufficient time to cool. Among these areas are the cook-top and
surfaces close to the cook-top.
WARNING
To avoid risk of electrical shock, personal injury, or death,
make sure your range has been properly grounded and
always disconnect it from main power supply before any
servicing.
– INJURIES CAN OCCUR IF THE
RANGE TIPS
– INSTALL ANTI-TIP DEVICE
PACKED WITH RANGE
– FOLLOW ALL INSTALLATION
INSTRUCTIONS
!
WARNING
!
CAUTION
!
!
!
1-2
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.
SELF-CLEAN OVENS
• 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.
• Clean in the self-clean cycle only parts listed in this manual.
Before self-cleaning the oven, remove the broiler pan and any
utensils from the oven.
• 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 mode “F”
code goes on, or three long beeps sound, oven is malfunctioning
in the self-clean mode. Turn off or disconnect appliance from
power supply and have serviced by a qualified technician.
IMPOR
IMPORT
TANT SAFETY INSTRUCTIONS
ANT 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/CERAMIC COOKING SURFACES
• 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.
1-3
GENERAL
The Model/Serial Number label and Tech Sheet locations are shown below.
Model & Serial
Number Location
MODEL & SERIAL NUMBER LABEL
MODEL & SERIAL NUMBER LABEL
AND TECH SHEET LOCA
AND TECH SHEET LOCATIONS
TIONS
Tech Sheet Location
(On Low Rear Cover)
2-1
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.
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(some
model) 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.
GENERAL INFORMA
GENERAL INFORMATION
TION
Broil element
Hidden bake
element
Broil element
Convection
element
Hidden bake
element
Broil element
Hidden bake
element
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