LG LRE30451 Service Manual

Website http://us.lgservice.com

30” Freestanding Electric Range

SERVICE MANUAL

MODEL: LRE30451SW / SB / ST

CAUTION

BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

P/NO : 3828W5S6294

December, 2005

Printed in Korea

FORWARD

!

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.

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.

LG Electronices assumes no responsibility for any repairs made on our products by anyone other than Authorized Service Technicians.

TABLE OF CONTENTS

(P

AGE

)

GENERAL

• Important safety instructions

• Model & Serial number label and tech sheet locations

• Specifications

USING YOUR RANGE

• General imformation

• Control panel features

- To turn on a single surface unit (Right Rear, Left Rear, Left Front)

-

- To set the warming zone controlTo set the warming zone control

- Clock

- Start, Clean/Off and On/Off pad

- Oven light

- Timer On/Off

- Convection auto conversion

- Thermostat adjustment

- Preheating alarm light On/Off

- Beeper volume

- Temperature unit (°F or °C)

-

- Broil

- Convection Bake

- Convection Roast

- Cook & Warm

- Oven lockout

- Changing hour mode on clock (12HR, 24HR)

- Proof

- Self-Clean

- Warming drawer

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To turn on a dual surface unit (Right Front)

Bake, Timed Bake, Delayed timed Bake

1-1 ~ 1-4

1-1 ~ 1-2

1-3 1-4

2-1 ~ 2-5

2-1

2-2 ~ 2-5

COMPONENT ACCESS

• Component Locations

• Removing the Back, Control cover and Key membrane Assembly

• Removeing the Control Power Supply and Power Control Board (PCB)

• Removing the Surface Element and the Ceramic Glass Cooktop

• Removing the Door Latch and the Door Switch

• Removing the BROIL element

• Removing the BAKE element

• Removing the CONVECTION Fan blade and Fan motor

• Removing the Oven light & Socket assembly

• Removing the latch drive assembly

- Door locking mechanism

• Removing the Oven temperature Sensor

• Removing the storage drawer

• Removing & Replacing the Lift-off Oven Door

• Removing the Oven Door Handle & Glass

• Removing the Oven Door Gasket

• Removing a Side Panel

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3-1 ~ 3-17

3-1

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3-14 ~ 3-15

3-2 3-3 3-4 3-5 3-6 3-7 3-8

3-9 3-10 3-10 3-11

3-12

3-13

3-16 3-17

(Page)

COMPONENT TEST

•

Convection Motor

•

Door locking Motor

•

Micro Switch (normally open type)

•

LVT

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•

Oven Sensor

•

Door switch

•

Broil element

•

Bake element

•

Oven lamp

•

Single surface unit(RF, LR, RR)

•

Warming Zone(CR)

•

Dual surface unit(LF)

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COMPOSITION OF CONTROL

• Main PCB

• Cook-top display PCB

• Oven relay PCB

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FAILURE MODE FLOW CHART

•

No display (No power)

•

Oven does not heat

•

Cook-top does not heat

•

Oven lamp does not operate

•

No key input

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4-1 ~ 4-7

4-1

4-2

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5-1 ~ 5-4

6-1 ~ 6-11

4-2

4-3

4-4

4-5

4-6

4-7

5-2 5-3 5-3

6-1 ~ 6-4 6-5 ~ 6-7 6-8 ~ 6-9

6-10 6-11

FAILURE CODES

F-CODE FLOW CHART

•

F-1 error

•

F-2 error

•

F-3, F-4 error

•

F-9 error

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APPENDIX A (SCHEMATIC DIAGRAM OF PCB)

TROUBLE SHOOTING

SCHEMATIC DIAGRAM

• STRIP CIRCUITS

EXPLODED VIEW

REPLACEMENT PARTS LIST

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7-0

7-1 ~ 7-10

7-1

7-2 ~ 7-4 7-5 ~ 7-6

7-9 ~ 7-10

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8-1

9-1 ~ 9-3

10-1

10-2 ~ 10-6

11-1 ~ 11-8

12-1 ~ 12-19

GENERAL

!

IMPORTT

IMPOR

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.

WARNING

• 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

WARNING

– INJURIES CAN OCCUR IF THE

RANGE TIPS

– INSTALL ANTI-TIP DEVICE

PACKED WITH RANGE

– FOLLOW ALL INSTALLATION

INSTRUCTIONS

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.

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.

ANT SAFETY INSTRUCTIONS

This symbol will help alert you to hazards or unsafe practices which could cause serious bodily harm or death.

CAUTION

!

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.

• 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

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.

1-1

GENERAL

IMPORTT

IMPOR

ANT SAFETY INSTRUCTIONS

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 selfclean 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.

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 heatsensitive 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 cooktop 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.

1-2

GENERAL

MODEL & SERIAL NUMBER LABEL

AND TECH SHEET LOCA

The Model/Serial Number label and Tech Sheet locations are shown below.

Model & Serial Number Location

TIONS

Tech Sheet Location (On Low Rear Cover)

1-3

GENERAL

Overall

Control

Cooktop

Power

Oven

SPECIFICA

Model Number LRE30451SW / SB / ST

Category Convection

Width Installation type Color availability Oven Cooktop Display Electronic clock & timer Control lock capability Audible preheat signal Special function

1. Clock(12hr, 24hr)

2. Temperature unit (F / C)

3. Beeper Volume(High, Low, Mute)

4. Smart oven light On/Off

5. Convection auto conversion on/off

6. Thermostat Adjustment

7. Sabbath mode

Material # of element LR RR CR LF RF Capacity(cu.ft) Broil element Bake element Convection System

-Convection element # of Racks Interior oven light Proof Cook & warm Favorites

TIONS

Freestanding

WH, BK, STS

Keypad Keypad

LED

Ceramic glass

6"-1,200 6"-1,200

warming zone

Dual (6”/9"-1,200/2,500)

12"-2,700W

4000 watts 3400 watts

2 standards

120V, 40Watts

30"

Yes Yes Yes

5

5.6

Yes

No

Yes Yes

No

Drawer

Dimensions (inch)

Power

Door lockout Broiler pan Type Element Warming rack Oven Interior(W x H x D)

Exterior - Width Exterior - Height Exterior - Depth

Net weight: Lbs (Kg) Rating

Yes Yes

Storage drawer

-

24 1/2 x 20 1/4 x 19 3/8 29 7/8 36 (cooktop), 47 5/8 (backguard top) 25 11/16 (Door), 28 (with handle)

181 lbs (82kg)

11.2Kw(120/240V) / 8.9Kw(120/208V)

1-4

USING YOUR RANGE

GENERAL INFORMA

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 element

TION

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.

Broil element

Convection element

Hidden bake element

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.

Broil element

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.

Hidden bake element

2-1

USING YOUR RANGE

single

Left Rear element

Dual

Left Front element

single

Right Front

Dual element

Warming zone

single

Right Rear element

A A

A B

C

16

8 9 10 11 12 13 14 15 7

13 42 5 6

1. BAKE PAD: Press to select the bake function.

2. BROIL PAD: Press to select the broil function.

3. CONVECTION BAKE PAD: Press to select baking

with the convection function.

4. CONVECTION ROAST PAD: Press to select roasting with the convection function.

5. NUMBER PADS: Use to set any function requiring numbers such as the time of day on the clock, the timer, the oven temperature, the start time and length of operation for timed baking.

6. START PAD: Must be pressed to start any cooking or cleaning function.

7. CLEAR/OFF PAD: Press to cancel all oven operations except the clock and timer.

8. CLOCK PAD: Press before setting the time of day.

9. TIMER ON/OFF PAD: Press to select the timer

feature.

10. COOK TIME PAD: Press and then use the number

pads to set the amount of time you want your food to cook. The oven will shut off when the cooking time has run out.

11. START TIME PAD: Use along with BAKE, CONV.

BAKE, CONV. ROAST, COOK TIME and SELF CLEAN pads to set the oven to start and stop automatically at a time you set.

CONTROL P

ANEL FEA

12. COOK & WARM PAD: Press to keep cooked foods warm. See page 2-4 for pad operation.

13. PROOF PAD: Press to select a warm environment useful for rising yeast-leavened products.

14. SELF CLEAN PAD: Press to select self-cleaning function. See the using the Self-Cleaning Oven section.

15. OVEN LIGHT PAD: Press to turn the oven light on or off.

16. DISPLAY

A

B

C

TURES

Single surface units

: Right Rear, Left Rear, Right Front

Dual surface unit : Left Front

Warming Zone : Center Rear

2-2

USING YOUR RANGE

To turn on a single surface unit

A

(Right Rear, Left Rear, Right Front)

1. Press ON/OFF pad for the desired element.

2. Press ( / ) pad to choose the desired setting.

B

To turn on a dual surface unit (Left Front)

1. Press ON/OFF pad

2. Press the ELEMENT SIZE pad as needed to select the desired burner size. When first selected, 9” size is on. The light above the ELEMENT SIZE pad indicates which size surface unit is on.

2. Press ( / ) pad to choose the desired setting.

Note:

• Each time a pad is pressed a beep will sound.

• The power level decreases or increases by 0.5 from 9.0 through 3.0. (by 0.2 from 3.0 through 1.0)

• Lo is the lowest power level available.

• “HS” will appear when the unit is hot to touch

C

To set the warming zone control

4. TIMER ON/OFF

TIMER

ON/OFF

To cancel timer at any time, touch TIMER ON/OFF pad.

Note:

1. If you press TIMER ON/OFF pad once, this allows you to

select "seconds" (for example: if you press “5” and “6”, it means 56 seconds)

2. If you press TIMER ON/OFF pad twice, this allows you to

select "minutes" (for example: if you press “5” and “6”, it means 56 minutes)

Desired

time

TIMER

ON/OFF

5. CHANGING HOUR MODE ON CLOCK (12HR, 24HR)

Press and hold the COOK&WARM pad for 3 seconds

Press “1” pad once for 12-hour,

“1” pad twice for 24-hour.

START

1. Press ON/OFF pad at the warming zone.

2. Press ( / ) pad to choose the desired setting.

Note:

• Each time a pad is pressed a beep will sound.

• The controls for the warming zone allow for 5

different heat settings : Lo~Hi

• “HS” will appear when the unit is hot to touch.

1. SETTING THE CLOCK

CLEAR

/OFF

CLOCK

Desired

Time

START

2. START, CLEAN/OFF AND ON/OFF PAD

1. Touch START pad to start oven.

2. Touch CLEAR/OFF pad to cancel a program during cooking or Erase during programming.

3. Touch ON/OFF pad to start or cancel the surface unit.

3. TO TURN ON/OFF THE OVEN LIGHT

The oven light automatically turns ON when the door is opened. The oven light may also be manually turned ON or OFF by pressing the OVEN LIGHT pad

Note: The oven light cannot be turned on if self-clean feature

is active.

6. TEMPERATURE UNIT (°F or °C)

1. Press and hold COOK&WARM pad for 3 seconds

2. Press “2” pad once for °F

or “2” pad twice for °C

3. Press START pad’

7. BEEPER VOLUME

1. Press and hold COOK&WARM pad for 3 seconds

2. Press “3” pad once for “Beep Hi” Press “3” pad to switch beeper volume

(HI, LO, OFF)

3. Press START pad

8. PREHEATING ALARM LIGHT ON/OFF

1. Press and hold COOK&WARM pad for 3 seconds

2. Press “4” pad once for ON

or “4” pad twice for OFF

3. Press START pad

9. CONVECTION AUTO CONVERSION

1. Press and hold COOK&WARM pad for 3 seconds

2. Press “5” pad once for ON

or “5” pad twice for OFF

3. Press START pad.

2-3

USING YOUR RANGE

10. THERMOSTAT ADJUSTMENT

The oven temperature can be adjusted from

-35°F (-19°C) to 35°F (19°C).

Note: The thermostat adjustments made with this feature will

just change Bake, Convection Bake and Convection Roast temperature.

To increase the oven temperature:

1. Press and hold BAKE pad for 3 seconds

2. Press the desired temperature

3. Press START pad.

To decrease the oven temperature:

1. Press and hold BAKE pad for 3 seconds

2. Press the desired temperature

3. Press the BAKE pad once

4. Press START pad

11. BAKE, TIMED BAKE, DELAYED TIMED BAKE

BAKE

COOK

TIME

Desired

temperature

Desired time START

START

13. CONVECTION BAKE

CONV.

BAKE

Desired

Temp.

14. CONVECTION ROAST

CONV.

ROAST

Desired

Temp.

15. COOK & WARM

COOK &

WARM

16. OVEN LOCKOUT

Press and hold the START pad for 3 seconds (to activate or reactivate LOCKOUT)

17. PROOF

PROOF

START

TIME

12. BROIL

BROIL: once → Hi

: twice → Low

Desired

start time

START

18. SELF-CLEAN

SELF CLEAN : Once

: Twice → 2-hour : 3 times → 4-hour

START

→ 3-hour

TIME

Desired

start time

START

2-4

COMPONENT ACCESS

Broil Heater

Oven Sensor

Door Switch

Surface Elements

Door Locking Motor & Micro Switch

Main PCB

Cook Top Display PCB

Bake Heater

Hinge Hanger

Oven Light

LVT

Door Latch Assembly

Convection Motor

Oven Relay PCB

Thermal Fuse

This section instructs you on how to service each component inside the range. The components and their locations are shown below.

COMPONENT LOCA

TIONS

3-1

COMPONENT ACCESS

!

REMOVING THE BACK, CONTROL COVER

AND KEY MEMBRANE ASSEMBLYY

AND KEY MEMBRANE ASSEMBL

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect power before servicing the range. Replace all panels before operating range. Failure to do so can result in death or electrical shock.

CAUTION

!

When you work on the electric range, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful.

4. Remove the 3 screws from the rear control cover and remove the cover.

5. Remove 6 screws of PCB assembly and separate PCB assembly.

6. Remove 9 screws of KEY Membrane assembly and separate PCB assembly.

PCB Assembly

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 16 screws from the rear panel and remove the panel.

Control Cover

Back Cover

KEY MEMBRANE Assembly

3-2

COMPONENT ACCESS

!

REMOVING THE CONTROL POWER SUPPL

AND POWER CONTROL BOARD (PCB)

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect power before servicing the range. Replace all panels before operating range. Failure to do so can result in death or electrical shock.

CAUTION

!

When you work on the electric range, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful.

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 back cover & control cover (See step 3~4 on page 3-2)

4. There are 3 PCB's (power control board). When you check PCB, check the proper pcb in default mode and check main pcb.

NOTE: Refer to the page 5-1~5-3 for

composition of control board

Main PCB

Y

5. To remove the control power supply:

a) Disconnect 2 connectors. b) Remove the two screws.

2 Connector

2 Screws

Oven Relay PCB

3-3

COMPONENT ACCESS

!

REMOVING THE SURF

AND THE CERAMIC GLASS COOKT

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect power before servicing the range. Replace all panels before operating range. Failure to do so can result in death or electrical shock.

CERAMIC GLASS COOKTOP REMOVAL

Step. 1

Unplug the cord or disconnect power

Step. 2

Open oven door and remove the 3screws located at the front of the cook-top, then close the door.

3 Screws

Step. 3

Lift up the cooktop front and Remove the ground screw securing ground wire

ACE ELEMENTS

OP

Step. 5

Protect the cooktop surface and turn the assembly over.

Bracket screws

Step. 6

To remove the surface elements

a) Remove the wires from

the element and limiter terminals.

b) Remove the element

bracket screw (shown above) for the element you are servicing.

d) Carefully lift the bottom of the bracket just far enough

to remove the element.

REASSEMBLY NOTE: When you reinstall the element make sure that the wires are inserted into the correct tap then reinstall the bracket screw to secure it to the cooktop.

Step. 4

Slightly lift up and pull up the cook-top and then unplug the 2 connectors at the back by squeezing side tabs

Ground Screws

2 Connectors

3-4

COMPONENT ACCESS

!

REMOVING THE DOOR LA

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect power before servicing the range. Replace all panels before operating range. Failure to do so can result in death or electrical shock.

CAUTION

!

When you work on the electric range, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful.

1. Turn off the electrical supply going to the range.

2. Open the oven door.

3. Raise the cooktop (see page 3-4 for the procedure).

4. To remove the door latch: a) Remove the two screws from the door latch

and remove the latch.

TCH & DOOR SWITCH

b) Remove the door latch from the burner box

and unhook the actuating rod.

Unhook Actuating Rod

5. To remove the door switch: a) If not already done, raise the cooktop

(see page 3-4 for the procedure).

b) Remove the door switch from the range.

To do this, squeeze tabs and use a ratchet extension or a small socket, and tap it out of the hole with a hammer.

c) Disconnect the wires from the terminals.

2 Screws

Wires

Door Switch

3-5

COMPONENT ACCESS

!

REMOVING THE BROIL ELEMENT

b) Pull the element forward so that you can

WARNING

access the terminals and disconnect the wires.

ELECTRICAL SHOCK HAZARD

Disconnect power before servicing the range. Replace all panels before operating range. Failure to do so can result in death or electrical shock.

CAUTION

!

When you work on the electric range, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful.

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 broil element:

a) Remove the 4 screws from the front and rear

brackets.

2 Upper bracket Screws

2

Terminals

2 Rear bracket Screws

3-6

COMPONENT ACCESS

REMOVING THE HIDDEN BAKE ELEMENT

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 the rear panel from the unit. (See step 3 on page 3-2 for procedure)

Hidden bake element

4. Remove the 2 screws of power cord assembly box and 1 ground screw.

5. Set the box aside

7. Bend the insulation glass fiber up.

Screw

8. Remove two screws

Screw

and bend up two flanges

Flanges

9. Carefully pull the hidden bake element and its mounting bracket out of the range.

6. Cut the 9 points of flange and remove the bake heater cover.

Total 9 points

REPLACING THE MOUNTING BRACKET

1. Drive the two screws

3-7

COMPONENT ACCESS

Fan cover

Nut

Fan cover Screws (4ea)

Mounting Screws (3ea)

Cavity

Inner Outer

Fan

blade

Support

Washer

Fan motor

REMOVING THE CONVECTION ELEMENT

1. Disconnect power and remove oven racks.

2. Pull the range out of its mounting location so that you can access the rear of the unit.

3. Remove the rear panel from the unit.

, F

AN BLADE AND F

, F

AN BLADE AND F

8. To remove Fan motor assembly, disconnect wire connection and remove the three bracket screws

9. Pull the fan motor assembly forward.

(See step 3~4 on page 3-2 for procedure)

4. Disconnect the wire connection.

5. Remove the four Fan cover screws and set the fan cover aside.

AN MOT

OR

6. To remove Fan blade, remove Nut by screwing clockwise. Fan blade can |be replaced from inside oven.

!

CAUTION

Be careful not to bend the fan blade.

Nut

3-8

COMPONENT ACCESS

!

REMOVING THE OVEN LIGHT & SOCKET ASSEMBL

CAUTION

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect power before servicing the range. Replace all panels before operating range. Failure to do so can result in death or electrical shock.

CAUTION

!

When you work on the electric range, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful.

To replace:

1. Unplug range or disconnect power.

2. Turn the glass bulb cover in the back of the oven counterclockwise to remove.

3. Turn bulb counterclockwise to remove from socket.

4. Replace bulb and bulb cover by turning clockwise.

Be careful not to scratch or chip the oven liner paint when you remove the oven light socket in the next step.

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

Y

Glass cover & Bulb

5. Disconnect the wires from the socket terminals.

3-9

COMPONENT ACCESS

!

REMOVING THE LA

TCH DRIVE ASSEMBLYY

TCH DRIVE ASSEMBL

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect power before servicing the range. Replace all panels before operating range. Failure to do so can result in death or electrical shock.

CAUTION

!

When you work on the electric range, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful.

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 back cover & control cover (see step 3~4 on page 3-2).

4. Disconnect the wires from the latch drive motor and switch.

5. Remove the two mounting screws from the latch drive.

DOOR LOCKING MECHANISM

The door lock assembly is located at the back side of range. The structural elements are as below.

1.

When the oven control is programmed and started for the Self clean and Lock out mode, PCB (Power control board) chip operates the motor.

HOOK

Latch ROD

CAM

MICRO SWITCH

MOTOR

6. Unhook the Latch rod from the cam.

screws screws

2. The cam moves the door hook connected to latch rod from unlocked position to locked position (from locked Position to unlocked position)

3. The cam activates the micro switch that causes the motor to stop.

4. The locked status remains until the range temperature drops to approximately 500F after end of the self clean or lock out feature is reactivated. The motor operates to unlock door at that time.

3-10

COMPONENT ACCESS

!

REMOVING THE OVEN TEMPERA

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect power before servicing the range. Replace all panels before operating range. Failure to do so can result in death or electrical shock.

CAUTION

!

When you work on the electric range, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful.

1. Turn off the electrical supply going to the range.

2. Open the oven door and remove the racks from the oven.

3. Pull the range away from the wall so that you can access the rear panel.

4. Remove the 16 screws from the rear panel and remove the panel (see step 3 on page 3-2).

TURE SENSORS

5. To remove an oven temperature sensor,

disconnect the connector from the main harness and remove the two mounting screws in oven cavity.

Screws

Main oven Sensor

Main oven Sensor connector

connector

3-11

COMPONENT ACCESS

!

Remove screw

Lever

Push down with finger

Lever

Push up with finger

REMOVING THE ST

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect power before servicing the range. Replace all panels before operating range. Failure to do so can result in death or electrical shock.

CAUTION

!

When you work on the electric range, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful.

To Remove Storage Drawer:

1. CAUTION - Turn power OFF before removing

the Storage Drawer.

2. Open the drawer to the fully opened position.

3. Remove the 2 screws (right and left side). (refer to below picture)

4. Locate glide lever on each side of drawer, push down on the left glide lever and pull up on the right glide lever.

ORAGE DRA

To Replace the Storage Drawer:

1. Replace shield on the right glide of the drawer body.

2. Pull the bearing glides to the front of the chassis glide.

3. Align the glide on each side of the drawer with the glide slots on the range.

4. Push the drawer into the range until levers “click” (approximately 2”). Pull the drawer open again to seat bearing glides into position. If you do not hear the levers “click” or the bearing glides do not feel seated remove the drawer and repeat steps 2-4. This will minimize possible damage to the bearing glides.

WER

5. Pull the Storage drawer away from the range.

3-12

COMPONENT ACCESS

Slot

Hinge

lock

Lock

Unlock

Hinge arm

Indentation

Bottom edge of slot

Hinge arm

Hinge lock

REMOVING & REPLACING THE LIFT

CAUTION

!

The door is very heavy. Be careful when removing and lifting the door. Do not lift the door by the handle.

To replace the door:

Step. 1

Firmly grasp both sides of the door at the top.

To remove the door:

Step. 2

Step. 1

Fully open the door.

Step. 2

Pull the hinge locks down toward (Fig.1) the door frame, to the unlocked position.

Step. 3

Firmly grasp both sides of the door at the top.

<Fig.1>

With the door at the same angle as the removal position, seat the indentation of the hinge arm into the bottom edge of the hinge slot. The notch in the hinge arm must be fully seated into the bottom of the slot.

Step. 3

Fully open the door. If the door will not fully open, the indentation is not seated correctly in the bottom edge of the slot.

-OFF OVEN DOOR

Step. 4

Close door to the door removal position, which is approximately 5 degrees. (refer to the Fig.2)

Step. 5

Lift door up and out until the hinge arm is clear of the slot.

<Fig.2>

Step. 4

Push the hinge locks up against the front frame of the oven cavity to the locked position.

Step. 5

Close the oven door.

3-13

COMPONENT ACCESS

!

REMOVING THE OVEN DOOR HANDLE & GLASS

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect power before servicing the range. Replace all panels before operating range. Failure to do so can result in death or electrical shock.

CAUTION

!

When you work on the electric range, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful.

To remove the door handle & trim (for stainless model)

6.

a) Remove the 4 door handle screws and lift the door

handle off door trim and slide up the door handle.

Handle

screws

Door trim

6. To remove the door handle trim & glass

(for white / Black model)

a) Remove the handle and glass trim screws

1. Remove the oven door from the range (see page 3-13 for the procedure).

2. Place the oven door on a padded work surface with the front glass facing down.

3. Remove the 4 top door screws.

4 top liner screws

4. Remove the three bottom screws from the door liner.

Handle screws

Glass trim screws

b) Lift the door handle off door trim

3 bottom liner screws

5. Lift the liner assembly off the front glass and set it aside.

3-14

S

lide up the door trim and pull the glass trim forward

c)

COMPONENT ACCESS

7. To remove a hinge hanger assembly:

a) Remove the 2 top liner screws

(See step 3 on page 3-14)

b) Place the door liner assembly on a padded work

surface with the hinge hangers over the edge. c) Remove the two bottom screws. d) Lift the hinge hanger out of the door liner slot.

Hinge hanger screws

8. To remove the oven door glass assembly:

a) Remove both hinge hangers (see step 8). b) Remove the 6 screws. c) Lift the insulation cover off the door liner.

d) Lift the inner oven door glass and bracket

assembly out of the door liner.

lnner Oven Door

Glass & Bracket

REASSEMBLY NOTE: When you reinstall the insulation around the oven door glass, make sure that the insulation is not visible in the glass after the door is reassembled.

lnsulation cover

3-15

COMPONENT ACCESS

!

REMOVING THE OVEN DOOR GASKET

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect power before servicing the range. Replace all panels before operating range. Failure to do so can result in death or electrical shock.

CAUTION

!

3. Pull the ends of the gasket out of the liner holes.

Liner Hole

When you work on the electric range, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful.

1. Open the oven door to its fully down position.

2. Pull the oven door gasket clips out of the liner holes until all of the clips are removed.

Door gasket

REASSEMBLY NOTE: When you install the new gasket, make sure that all of the clips are seated in their liner holes, and that the ends of the gasket are pushed fully into their holes. Use the pointed end of a pencil to push the gasket ends into the holes.

Gasket clip

3-16

COMPONENT ACCESS

!

REMOVING A SIDE P

WARNING

ELECTRICAL SHOCK HAZARD

Disconnect power before servicing the range. Replace all panels before operating range. Failure to do so can result in death or electrical shock.

CAUTION

!

When you work on the electric range, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful.

1. Turn off the electrical supply going to the range.

2. Remove the oven door from the range (see page 3-13 for the procedure).

3. Pull the range away from the wall so you can access the back of the unit.

4. Remove the 16 screws from the rear panel and remove the panel (see step 3~4 on page 3-2).

5. Raise the cooktop (see page 3-4 for the procedure). NOTE: Position the side of the cooktop so that it does not rest on the side panel that you are removing.

6. Remove the two screws from the top rear of the side panel.

ANEL

7. Remove the two screws from the left or right side panel.

8. Pull the back of the side panel out from the range

˚

approximately 10

.

9. Push forward and remove the side panel.

3-17

COMPONENT TEST

!

Before testing any of components, perform the following checks:

NOTE:

1. The most common cause for control failure is corrosion on connectors. Therefore, disconnecting and reconnecting wires will be necessary throughout test procedures

2. ALL units in the first few days of use should be checked for mis-wiring or loose connections

1. All/tests/checks should be made with a VOM or DVM having a sensitivity of 20,000 ohms per-volt DC, or greater.

2. Check all connections before replacing components, looking for broken or loose wires, Failed terminals, or wires not pressed into connectors far enough.

3. Resistance checks must be made with power cord unplugged from outlet, and with wiring harness or connectors disconnected.

WARNING

• Disconnect power supply cord from the outlet before servicing

• Replace all panels and parts before operating

• Reconnect all grounding devices after servicing

Failure to do so can result in death or electrical shock

NOTE: Below Ω value were tested at room temperature (77F/25°C)

Components Test procedures Results

Convection Motor 1. Refer to page 3-8 for the servicing procedure

2. Measure the resistance (Multiple meter scale: R x 1)

Normal: Approximately

33.5 Ω If not replace

Abnormal: Infinite (open)

± 10%

below 5Ω (shorted)

4-1

Components Test procedures Results

NO

COM

Door locking Motor

Micro Switch (normally open type)

1. Refer to page 3-10 for the servicing procedure

2. Measure the resistance (Multiple meter scale: R x 1000)

1. Refer to page 3-10 for the servicing procedure

2. Measure the resistance (Multiple meter scale: R x 1000)

Normal: Approximately

2.6 kΩ

± 10%

If not replace

Abnormal: Infinite(open)

below 5Ω (shorted)

Door latch

open

Door latch

Locked

Continuity Infinite

LVT

NOTE: After checking for the continuity of switch, make sure that they are

connected correctly

1. Refer to page 3-3 for the servicing procedure

2. Measure the resistance (Multiple meter scale: R x 1000)

Normal: Approximately

27 Ω

± 10%

If not replace

4-2

Components Test procedures Results

Oven Sensor

Door switch

1. Refer to page 3-11 for the servicing procedure

2. Measure the resistance after cooling down (Multiple meter scale: R x 1000)

NOTE: Oven sensor is so sensitive to temperature

Do test after cooling down sufficiently

1. Refer to page 3-5 for the servicing procedure

2. Measure the resistance after cooling down (Multiple meter scale: R x 1000)

Normal: Approximately

1.09 kΩ If not replace

NOTE: Ω Value was tested at room temperature (77F/25˚C)

Door open Door closed

Continuity Infinite

± 10%

Broil element

Bake element

1. Refer to page 3-6 for the servicing procedure

2. Measure the resistance after cooling down (Multiple meter scale: R x1)

1. Refer to page 3-7 for the servicing procedure

2. Measure the resistance after cooling down (Multiple meter scale: R x1)

4-3

Normal: Approximately

14 Ω

± 10%

If not replace

NOTE: Ω Value was tested at room temperature (77F/25˚C) Be careful the element is sensitive to temperature.

Normal: Approximately

17 Ω

± 10%

If not replace

NOTE: Ω Value was tested at room temperature (77F/25˚C) Be careful the element is sensitive to temperature.

Components Test procedures Results

Oven lamp

1. Measure the resistance after cooling down (Multiple meter scale: R x1)

Normal: Below 5 Ω.

If not replace

4-4

Components Test procedures Results

Element terminal

Single surface units:

Right Front (RF), Left Rear (LR) and Right Rear(RR) Element

1. Refer to page 3-4 for the servicing procedure

2. Set the Multiple meter scale to the R x 1

3. Disconnect wires from cook-top elements

4. Touch the ohmmeter test leads to the element terminal and 1A. The meter should indicate 46 Ω ± 10%

1A

5. Touch the ohmmeter test leads to limiter terminals 1A and 2A. The meter should indicate continuity.(0Ω)

2A

1A

Normal: Approximately 46 Ω,

If not replace

Normal: continuity

(below 0.5 Ω) If not replace

6. Touch the ohmmeter test leads to limiter terminals 1B and 2B. With the temperature below 150˚F, the meter should indicate an open circuit(infinite). With the temperature above 150˚F, the meter should indicate continuity (0Ω).

2B

1B

4-5

Below 150˚F 󳥡 open circuit(infinite).

Above 150˚F 󳥡 continuity (0 Ω)

Components Test procedures Results

Element terminal

Center Rear(CR) Element

;Warming Zone

1. Refer to page 3-4 for the servicing procedure

2. Set the Multiple meter scale to the R x 1

3. Disconnect wires from CR elements

4. Touch the ohmmeter test leads to the element terminal and 1A. The meter should indicate 565 Ω ± 10%

1A

5. Touch the ohmmeter test leads to limiter terminals 1A and 2A.the meter should indicate continuity (0 Ω)

2A

1A

Normal: Approximately 565 Ω,

If not replace

Normal: continuity

(below 0.5 Ω) If not replace

6. Touch the ohmmeter test leads to limiter terminals 1B and 2B. With the temperature below 150˚F, the meter should indicate an open circuit(infinite). With the temperature above 150˚F, the meter should indicate continuity (0 Ω).

2B

1B

4-6

Below 150˚F 󳥡 open circuit(infinite).

Above 150˚F 󳥡 continuity (0 Ω)

Components Test procedures Results

Dual surface element : Left Front(LF)

1. Refer to page 3-4 for the servicing procedure

2. Set the Multiple meter scale to the R x1

3. Disconnect wires from cook-top elements

4. Touch the ohmmeter test leads to the (E1 & 1A) and (E2 & 1A) the meter should indicate :

󳥡

- (E1 & 1A)

- (E2 & 1A) 󳥡55 Ω ± 10%

5. Touch the ohmmeter test leads to limiter terminals 1A and 2A.the meter should indicate continuity (0 Ω)

32 Ω ± 10%

E1

1A

E2

Normal: Approximately 32 Ω

Normal: Approximately 55 Ω

Normal: continuity

(below 0.5 Ω) If not replace

2A

6. Touch the ohmmeter test leads to limiter terminals 1B and 2B. With the temperature below 150˚F, the meter should indicate an open circuit(infinite). With the temperature above 150˚F, the meter should indicate continuity (0 Ω).

2B

1A

1B

4-7

Below 150˚F 󳥡 open circuit(infinite).

Above 150˚F 󳥡 continuity (0 Ω)

COMPOSITION OF CONTROL

Front

Back

Controller assembly

Main PCB (P/N : 6871W1N002A)

Front Back

Cook top display PCB (P/N : 6871W1N010B)

Front

Back

Front Back

Key pad assembly

Oven relay PCB (P/N : 6871W1N012B)

Front Back

PCB case assembly

5-1

Main PCB

P/N : 6871W1N002A

COMPOSITION OF CONTROL

Main function

▶ Supply a DC power source (GND,5V,12V(Vry(oven heater switching)),Vdisp(5V)) ▶ Supply a DC power source (GND,12V(Vry(cooktop heater switching voltage)) ▶ Oven heater control

(DLB / Broil / Bake)

▶ Oven display control ▶ Cook top heater control

(Warmer zone / RR / LR / RF / LF)

▶ Cook top display control ▶ Oven lamp / door lock motor / convection fan control ▶ Detecting oven temperature / warming drawer temperature ▶ Buzzer sound control ▶ Key entry ▶ Door open/close, Door lock/unlock detection ▶ Error mode detection and pop up ▶ Supervising hot cook top element ▶ Single Radiant Surface Elements -Right Rear, Left Rear, Left Front- on/off, power level relay switching ▶ Dual Radiant Surface Elements -Right Front INNER, OUTER- on/off, power level relay switching ▶ Single Radiant Surface Elements

-Warming Zone (Center Rear)-on/off,power level relay switching

▶ Supervising cook top element hot

5-2

COMPOSITION OF CONTROL

Cook-top display PCB

P/N : 6871W1N010B

Main function

▶ Single radiant surface elements -Right Rear, Left Rear, Left Front- power level indication ▶ Dual radiant surface elements -Right Front inner,outer- power level indication ▶ Dual radiant surface element size indication-Right Front inner, outer ▶ Single radiant surface elements -warming zone (Center Rear)-power level indication

Oven relay PCB

P/N : 6871W1N012B

Main function

▶ Oven heater on/off relay switching

(DLB / Broil / Bake)

5-3

FAILURE MODE FLOW CHART

No display (No power)

Blank display

Enter key input

Some beep

sound?

Yes

Cook-top display

blank?

Yes

Check voltage – Main PCB(002A) CN14 (Pin 10 and 12)

No

Check the thermal fuse (See the page 3-1)

Check AC input voltage of Main PCB

- Main PCB CN3 (pin 1 and 3)

CN14(Pin 10 and 12) The voltage should be (-)4.5V ~ (-)5.5V

1

(Go to page 6-3)

Main PCB(002B)

(-)4.5V ~ (-)5.5V ?

Yes

Replace the cook-top display PCB(010B)

END

6-1

No

Replace the main PCB(002A)

END

FAILURE MODE FLOW CHART

No display (No power)

Blank display

Enter key input

Some beep

sound?

Yes

Oven display

blank?

Yes

Replace the main PCB(002A)

END

No

Check the thermal fuse (See the page 3-1)

Check AC input voltage of Main PCB

- Main PCB CN3 (pin 1 and 3)

1

(Go to page 6-3)

6-2

FAILURE MODE FLOW CHART

No display (No power)

1

Is it 120V AC?

Yes

Disconnect power

Check the power transformer (Refer to the below)

Secondary

No

Primary

Check the harness of between L1~N

Yes

Normal?

No

Replace the defective harness

S2 S1

P

Fig.1

Side Lead Color DCR(Ω)

P S1 S2

black ~ white

yellow ~ yellow

red ~ red

Replace the Main PCB(002A)

25 ~ 28

1.0 ~ 1.3

1.8 ~ 2.1

Normal?

END

Yes

measure LVT coil resistance (Normal: approximately Fig1)

No

Replace the power transformer

END

6-3

FAILURE MODE FLOW CHART

Oven does not heat

Code Error mode Operation Times/sampling

F-7 No heating If current oven temperature does not exceed 150˚F and

less than start temperature over 5 minutes on preheating, where door is closed. (except proof and cook & warm )

No Heating(Main Oven)

Disconnect power

Check for loose connections at bake, broil,

convection heater terminal and harness

During cook

Normal?

Yes

Check the bake heater (measure the resistance after cooling down) Normal: approximately 17Ω

Continued on the next page

No

Reconnect.

If defective harness,replace or fix

END

6-4

FAILURE MODE FLOW CHART

Oven does not heat

Normal?

Yes

Check the broil heater (measure the resistance after cooling down) Normal: approximately 14Ω

Normal?

Yes

No

Replace the bake heater

END

Replace the broil heater

Continued on the next page

END

6-5

FAILURE MODE FLOW CHART

Oven does not heat

Check for loose oven sensor connector

Normal?

No

Yes

Check the oven sensor (measure the resistance after cooling down) Normal: approximately 1.09kΩ

No

Normal?

Yes

Replace the oven relay PCB (012B)

Reconnect

END

Replace the oven sensor

Normal?

Yes

Replace the main PCB(002A)

END

For further check of main PCB

Refer to the appendix A

6-6

FAILURE MODE FLOW CHART

Cook-top does not heat

No heating

(All or a part of cook-top heaters)

Disconnect power

Check for loose connection at board (002A PCB) to cook top heaters.

Normal?

Yes

Continued on the next page

No

Reconnect.

If defective harness, replace or fix

END

6-7

FAILURE MODE FLOW CHART

Cook-top does not heat

Remove the main PCB(002A) harness and pull the main PCB(002A) forward from the PCB case

Inspect the main PCB(002A)

Wide pattern(Live part) blown out

Normal?

Replace

the main PCB(002A)

END

No

Repairable

by yourself?

NoYes

Yes

Repair and fix

END

6-8

FAILURE MODE FLOW CHART

Oven lamp does not operate

Disconnect power

Check for loose connection of oven lamp terminal and harness

Normal?

Yes

Check for loose connector (main PCB CN1)

Normal?

Yes

Check the oven lamp (measure the resistance) Normal: below 5Ω, Abnormal: infinite

No

Normal?

Reconnect

If defective harness, replace or fix

END

Reconnect

END

No

Replace the

oven lamp

Abnormal

Infinite

Yes

Replace

the main PCB(002A)

END

6-9

END

FAILURE MODE FLOW CHART

No key input

Key does not input

Reconnect the main PCB connector

CN10 and CN11 more than two times

END

Yes

Normal?

No

Some keys or

All keys?

Some

Replace the main PCB

Normal?

No

All

Replace the main PCB(002A)

END

Yes

END

Replace the keypad assembly

END

6-10

FAILURE CODES

!

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 death or electrical shock

“F” (Failure) DISPLAY CODES

Before doing any action, perform the following step1~3.

Step1. Unplug range or disconnect power. Step2. Check if connector is fully seated or not. Note: All units in the first few days of use should be

checked for mis-wiring or loose connections.

DISPLAY

SHOWS

F1

F2

F3

F4

CAUSE CORRECTIVE ACTION

Key held

down too

long or

shorted

key

Door

Locking

system

don’t

operate

Main oven

Sensor

opened

Main oven

Sensor

shorted

A. Perform step 1 through 2 above B. Replace keypad or keypad assembly

(if F code recur, go to C after unplugging or disconnecting)

C. Replace Control (PCB) assembly A. Perform step 1 through 2 above

B. Check wire and connections from control to latch C. If motor operate, check integrity of latch mechanism

-

check the micro-switch (refer to component test section)

-

check integrity of door locking mechanism

D.

If motor didn’t operate, check continuity of the latch motor and electrical connections

- if the wiring is bad, replace the harness

- if the wiring is good, replace the door motor assembly

- if F code recur, replace control

A. Perform step 1 through 2 above B. Open the back panel and check continuity of

the sensor and Control (PCB) C. Disconnect sensor from harness D. - Measure Ω value between connector pins :

Approximately 1090 Ω (at room temperature: 77F/25°C)

- Measure value between sensor chassis and any connector pins : Ω value should read OPEN

=> if there is any problem, Replace oven sensor

E. If you couldn’t find any problem, Replace

Control (PCB)

DISPLAY

SHOWS F7

F9

CAUSE CORRECTIVE ACTION

Main oven heating error

Oven is too hot; Bad oven sensor; Bad control (PCB)

A. Perform step 1 through 2 above B. Open the back panel and check continuity of the

sensor, heater (bake, broil) and Control(PCB)

C. Check the bake and broil heater(refer to

component test)

D. Disconnect sensor from harness

- Measure Ω value between connector pins of oven sensor

-

Measure Ω value between sensor chassis and any connector pins : Ω value should read OPEN

=> if there is any problem, Replace oven sensor

E. If you couldn’t find any problem, Replace

Control(PCB)

A. Perform step 1 through 2 above B. Open the back panel and Disconnect

sensor from harness

- Measure Ω value between connector pins :approximately 1090 Ω (at room temperature :77F/25°C)

=> if there is any problem, Replace oven sensor

C. Check the bake and broil relay (refer to the strip

circuit section) STRIP CIRCUITS

D. If there is any problem, Replace Control (PCB)

7-0

F-CODE FLOW CHART

recur?

Yes

󳥡󳥡

F-1 error

If a key pad is continuously short for 󳤒 60 seconds.

No

Replace keypad or keypad assembly

Key short error

Code Error mode Operation Times/sampling

F-1 Key shorted

Key short error (F-1)

Plugged out the power, remove keypad-tail

and check F-1 error recur or not,

after plugging in the power

Disconnect power

Remove the main PCB(002A) harness and pull the PCB(002A) forward from the PCB case

Inspect main PCB connector (CN11)

▶

pin to pin short(Back)

Front Back

Repairable

by yourself?

END

Yes

Normal?

No

Yes

Repair and fix

No

Replace the main PCB(002A)

END

7-1

END

F-CODE FLOW CHART

Door lock system error 󳥡󳥡F-2 error

Code Error mode Operation Times/sampling

F-2 Door Lock Fail In case of Door Lock Failure

→ Just after self-clean start, the door lock motor starts to rotate. During that time if the door lock switch does not operate properly after rotating twice, then supervising circuit detects a Door Lock failure and the F-2 error code appears

Check for loose connection on the micro switch and the door locking motor.

.

Door lock failed

Disconnect power

Normal?

No

Yes

Check the oven door lock switch(micro switch) (measure the resistance

NO

COM

→

Normally open type)

Door latch

open

Continuity Infinite

Door latch

Locked

Continued on the next page

Reconnect

END

7-2

F-CODE FLOW CHART

Door lock system error 󳥡󳥡F-2 error

Normal?

Yes

Check the door locking motor (measure the resistance) normal: approximately 2.6kΩ abnormal: infinite or below 5 Ω

Normal?

Yes

Check for loose connector (Front) (main PCB CN4)

No

Replace the micro switch

END

Replace the door locking motor

Front

CN4

Normal?

Yes

Remove the main PCB(002A) harness and pull the PCB(002A) forward from the PCB case

No

END

Reconnect

END

7-3

F-CODE FLOW CHART

Door lock system error 󳥡󳥡F-2 error

Inspect connector pin solder of CN4 (Back) (main PCB CN4)

Back

CN4

※ If pin solder is cracked,

repair and re-use

Cracked?

Yes

Repair and fix

END

No

Replace

END

7-4

F-CODE FLOW CHART

Main oven sensing error 󳥡󳥡F-3, F-4 error

Code Error mode Operation Times/sampling

F-3

F-4

Opened Sensor

Shorted Sensor

Oven Thermistor remains open for over 1 min, after cook starts

Oven Thermistor is short for over 1 min after cook starts

Main oven sensing failed

Disconnect power

Check for loose oven sensor connector.

During cook

Normal?

No

Yes

Check the main oven sensor (measure the resistance after cooling down) Normal: approximately 1.09kΩ

No

Normal?

Yes

Continued on the next page

7-5

Reconnect

END

Replace the main oven sensor

END

F-CODE FLOW CHART

Main oven sensing error 󳥡󳥡F-3, F-4 error

Check for loose connector.

(Front) (main PCB CN6)

CN6

and look for harness terminals damaged or not

Yes

Check for loose connector

(main PCB CN6)

Normal?

Yes

Remove the main PCB (002A) harness and pull the PCB (002A) forward from the PCB case

Inspect connector pin solder of CN6 (Back) (main PCB CN6)

Back

CN6

No

※ If pin solder is cracked,

repair and re-use

Reconnect and

replace the bad harness

END

Cracked?

Yes

Repair and fix

END

7-6

No

Replace

END

F-CODE FLOW CHART

Oven too hot error 󳥡󳥡F-9 error

Code Error mode Operation Times/sampling

F-9 Oven hot Oven temperature is over 650˚F

continuously during 2 minutes on cooking.

Oven is too hot (F-9)

Disconnect power / Remove the

oven relay PCB(012B) harness and pull the

oven relay PCB(012B) forward from case

Check for a welded bake relay.

(measure the resistance)

During cook

(Not self clean mode)

Welded Normal

Continuity Infinite

Normal?

Continued on the next page

7-7

No

Replace

the oven relay PCB

END

F-CODE FLOW CHART

Oven too hot error 󳥡󳥡F-9 error

Check for a welded broil relay.

(measure the resistance)

Yes

Welded Normal

Normal?

Yes

Replace

the main relay PCB(002A)

END

Continuity Infinite

No

Replace

the oven relay PCB(012B)

END

7-8

APPENDIX A (SCHEMATIC DIAGRAM OF PCB)

8-1

TROUBLE SHOOTING

PROBLEMS POSSIBLE CAUSES & FAULTS SOLUTIONS

Oven not operating.

Oven element does not heat.

Surface element barely heats

Surface element will not heat Higher than low-medium

Frequent cycling of surface Element or warming zone

• Bad power control board (PCB)

• Power outage

• No line voltage

• Loose or bad wiring.

• Defective element.

• Bad Power control board(PCB)

• Loose or bad wiring connection at

element or terminal block.

• Defective Surface units control PCB

• Defective Surface element.

• Low line voltage

• This is normal

• Test and/or replace PCB

➞ Refer to the page 6-1~6-3

• Verify power is present at unit.

• Verify that the circuit breaker is not

tripped

• Replace household fuse capacity

• Check circuit breaker.

• Repair or replace wiring

(see wiring diagrams).

• Test and/or replace element.

• Test and/or replace PCB

➞ Refer to the page 6-4~6-6

• Verify all connections are clean and tight, replace broken wires

• Test and/or replace cook-top PCB ➞ Refer to the page 6-7~6-8

• Test and/or replace element.

• Line voltage should be minimum

240-volts. Of necessary, electrician should repair cause for low line voltage

• The element will cycle on and off to maintain the heat setting

“HS” (Hot surface)Warning message does not light up

Oven light fails to operate. (Refer to the page 6-9)

Oven does not begin clean cycle

Oven stop for Self clean cycle

• Defective cook-top control PCB

• Failed oven lamp.

• Circuit breaker or fuse is open

• Loose or bad wiring

• Defective light socket.

• Defective door switch

• Bad wiring

• Bad latch system

• Programming error

• Defective a point of contact with

door switch

• Test and/or replace cook-top PCB

• Check lamp and Replace is necessary

• Check circuit breaker or replace fuse.

• Repair or replace wiring

• Check light socket for continuity.

• Test and/or replace door switch

• Repair or replace wiring

• Check door locking motor and micro

switch

• Shut off power to oven for five minutes by switching off circuit breaker. Reset circuit breaker and try oven again.

• Test door switch and check the point of contact between door and door switch

9-1

TROUBLE SHOOTING

PROBLEMS POSSIBLE CAUSES & FAULTS SOLUTIONS

Electronic timer will not accept Programming.

Clock and timer not working

Oven does not bake (Selection is set for to BAKE or TIMED BAKE)

Oven does not Broil

Overheating or

“runaway” oven

• Failed main power control board

• Power outage

• Loose or bad wiring

• Defective BAKE element

• Defective electronic clock

• Door switch sensing error

• Loose or bad wiring

• Defective BROIL element

• Defective Power Control Board

• Loose or bad wiring to latch

system

• Defective Oven Sensor

• Bad Power Control Board(PCB)

• Replace power control board(PCB)

• Verify power is present at unit.

• Verify that the circuit breaker is not tripped

• Replace household fuse, but do not fuse

capacity

• Refer to Owner’s manual instructions

• Verity all connections are clean and tight,

replace broken wire

• Test and/or replace BAKE element.

• Replace power control board(PCB)

• Test door switch and check the point of

contact between door and door switch

• Verity all connections are clean and tight, replace broken wire

• Test and/or replace BAKE element.

• Replace power control board(PCB)

• Repair or replace wiring

• Test and/or replace Oven Sensor

• Test and/or replace PCB

Oven door will not open or latch.

Premature burnout of bake element

Oven door difficult to open

• Defective latch mechanism.

• Defective(bent)door latch lever.

• Oven is still hot. Cool-down period

after self-clean cycle not complete

• Improper use of oven(e.g. being used to heat the home)

• Worn or broken broil stop roller.

9-2

• Replace door latch system.

• Replace latch lever

• This is normal. Wait until LOCK icon goes

out.

• Use oven for baking only

• Replace oven door hinge

TROUBLE SHOOTING

PROBLEMS POSSIBLE CAUSES & FAULTS SOLUTIONS

Oven door sagging on one side

Door does not close completely at top

Door glass breaks.

Damaged oven door gasket.

Oven racks fit too tight.

Oven smokes/odor first few times of usage

Excessive smoking during a Self clean cycle

• Hinge loose or out of position to oven liner

• Broken or misadjusted door spring

• Door fits too tight at bottom.

• Oven racks covered with foil.

• Glass installed backward.

• Improper Self clean

• Racks were cleaned in self clean

cycle

• Tolerance buildup in oven liner.

• This is normal

• Excessive soil

• Adjust hinges or replace hinges

• Adjust or replace hinges

• Adjust hinges outward.

• Do not cover racks with foil.

• Install tempered glass toward the heat.

• Do not use harsh abrasives or scouring pads. See Owner’s manual intructions

• Apply a small amount of vegetable oil to a

paper towel and wipe the edges of the oven racks with the paper towel. Do not spray with pam or other lubricant sprays.

• Notify customer Assurance department.

• Minor smoking or odor is normal for the

first few tikes of oven usage

• Ventilate area well and perform self clean cycle

• Press the CLEAR/OFF pad. Open the windows to rid the room of smoke. Wait until the Self Clean cycle is cancelled Wife up the excess soil and reset the clean

Convection fan make a noise

Failures Codes

Oven temperature too hot or too cold

• A convection fan may automatically turn on and off. Low level noise is normal

• Loose nut of convection fan

• Deformed convection fan

• Electronically controlled

• Oven sensor needs to be adjusted

9-3

• Low level noise is normal

• Re-fasten the nut

• Replace the convection fan.

• Refer to “Failure codes” parts

(page 7-0~7-8)

• See “the adjusting your oven temperature” in owners manual

NOTE:Schematic diagram shows door switch In the cook position with the oven door open and elements off.

RADIANT COOK-TOP

Wattage

RR:1200W

LR:1200W RF:2700W

LF(Left Front) :1200W(inner) :2500W(Dual)

CR:100W

WIRE COLORS

SYMBOL COLOR

WH WHITE

BK BLACK RD RED

YL YELLOW

PK PINK

BL BLUE BN BROWN GN GREEN GY GRAY

WARNING

POWER MUST BE DISCONNECTED BEFORE SERVICING THE APPLIANCE

SCHEMATIC DIAGRAM

For Model: LRE30451SW / SB / ST

10-1

STRIP CIRCUITS

Complete the following steps before checking electric oven circuit :

1.Check the line voltage, household fuse or circuit breaker.

2.Check for loose wiring or mis-wiring within electric range.

NOTE: The following individual circuits are for use in diagnosis, and are shown in the ON position.

For Model: LRE30451SW / SB / ST

BAKE / COOK & WARM / PROOF

BROIL

OVEN LIGHT

10-2

For Model: LRE30451SW / SB / ST

SELF CLEANING

CLOCK DISPLAY ON

10-3

For Model: LRE30451SW / SB / ST

CONV. BAKE / CONV. ROAST

CR(Warming Zone)

RR Cook-top Element

10-4

For Model: LRE30451SW / SB / ST

LR Cook-top Element

RF Cook-top Element

LF Cook-top Element

10-5

#EV#

DOOR PARTS

DRAWER PARTS

COOKTOP PARTS

CONTROLLER PARTS

CAVITY PARTS

EXPLODED VIEW

INTRODUCTION (I)

For Model:

LRE30451SW / SB / ST

11-1

#EV#

DOOR PARTS

DRAWER PARTS

COOKTOP PARTS

CONTROLLER PARTS

CAVITY PARTS

INTRODUCTION (II)

For Model:

LRE30451SW / SB / ST

11-2

#EV#

WSZ218

WSZ222

WSZ002

WTP028

WTT025

WTT021

WTT034

162082

13806D

149802

162081

14810Q

148901

WTP028

13213A

149801

162082

14775A

149804

162083

148902

13550C

149803

13650A

14810D

13581A

DOOR PARTS (I)

For Model:

LRE30451SW / SB

11-3

13650A

149801

14775A

162083

162081

14810Q

13213A

148901

13551P

13806D

162082

14810D

162082

149801

WTT034

WTT025

WSZ002

WSZ222

WSZ218

WTT025

13550C

13581A

#EV#

DOOR PARTS (II)

For Model:

LRE30451ST

11-4

23572A

249302

26170G

24790A

249301

268711

268712

WTP013

33920P

WTT021

249802

249801

34930W

23808A

24781M

23551E

#EV#

CONTROLLER PARTS

For Model:

LRE30451SW / SB / ST

11-5

33301A

335302

335301

335303

335304

335303

33920P

349801

33920P

349802

34790A

34970A

WTT030

WTT024

WTT018

WSZ003

34970A

368772

368771

#EV#

COOKTOP PARTS

For Model:

LRE30451SW / SB / ST

11-6

WTP013

85012D

834462

84870C

84818D

83302D

834461

83550W

847781

83302D

WTP028

83720D

83212D

84870B

84818S

WTT024

WTT025

WTT030

549803

84870E

84810D

#EV#

DRAWER PARTS

For Model:

LRE30451SW / SB / ST

11-7

WSZ219

WSZ221

WTT030

WSZ221

WTT034

WWP008

WNH002

WNZ022

WAT001

WSZ221

WTT037

54620A

33808A

54811A

55012A

55900C

33808B

53720A

55231C

55233A

353002

548101

539202

549803

56913A

539202

466001

54810H

34930W

53720B

353001

36549C

568711

549801

548102

56549A

549802

54270A

36640B

35012A

56322A

33550H

539201

54810H

53504A

568771

333901

350262

333902

350261

56630T

SPEC: 120V, 40W

WNH201

568772

#EV#

CAVITY PARTS

For Model:

LRE30451SW / SB / ST

11-8

LG LRE30451 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

#EV#

#EV#

#EV#

#EV#

#EV#

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#EV#