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LG LRE3194ST - User Manual

LG LRE3194ST
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1
30” Freestanding Electric Range
SERVICE MANUAL
MODEL: LRE3194ST
LRE3194BD
LRE3194BM
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL37118393
June, 2018
Printed in Korea
Internal Use Only

Questions and Answers

Summary

Forward

Safety Precautions

Essential safety guidelines for servicing the appliance to prevent hazards.

General

Important Safety Instructions

Crucial safety guidelines to prevent fire, electric shock, injury, or damage during operation.

Model & Serial Number Label and Tech Sheet Locations

Identifies locations for model and serial number labels and tech sheets.

Specifications

Details technical specifications of the electric range model.

Using Your Range

General Information

Provides general information about the range, including rating labels and operational modes.

Control Panel Features

Details the functions and operation of the appliance's control panel buttons and display.

Component Access

Component Locations

Illustrates the locations of key internal components within the appliance.

Removing the Lamp, Controller, Back Cover and Controller Assembly

Detailed steps for removing the lamp, controller, back cover, and related assemblies.

Removing PCBs (Main PCB and Relay PCB)

Procedures for safely removing the Main PCB and Relay PCB.

Removing Surface Elements and Ceramic Glass Cooktop

Steps for removing surface elements and the ceramic glass cooktop.

Removing the Door Latch & Door Switch

Instructions for removing the oven door latch and door switch components.

Removing the Broil Element

Procedure for removing the broil element from the oven.

Removing the Hidden Bake Element

Steps for removing the hidden bake element.

Removing the Convection, Fan Blade and Fan Motor

Guide to removing the convection fan, fan blade, and fan motor.

Removing the Oven Light & Socket Assembly

Instructions for removing the oven light bulb and socket assembly.

Removing the Latch Drive Assembly

Procedure for removing the oven door latch drive assembly.

Removing the Oven Temperature Sensor

Steps for removing the oven temperature sensor.

Removing & Replacing the Lift-off Oven Door

Detailed steps for removing and replacing the lift-off oven door.

Removing the Oven Door Handle

Instructions for removing the oven door handle for different models.

Removing the Oven Doors Inner Glass

Procedure for removing the inner glass of the oven door.

Removing the Oven Door Gasket

Steps for removing and replacing the oven door gasket.

Removing the Side Panel

Guide to removing the side panel of the appliance.

Component Test

Convection Motor

Test procedure and expected resistance values for the convection motor.

Door Locking Motor

Test procedure and expected resistance values for the door locking motor.

Micro Switch

Test procedure for micro switch states (ON/OFF).

Oven Sensor

Test procedure and expected resistance values for the oven sensor.

Convection Heater

Test procedure and expected resistance values for the convection heater.

Door Switch

Test procedure for door switch states (open/closed).

Oven Lamp

Test procedure and expected resistance value for the oven lamp.

Bake Heater

Test procedure and expected resistance values for the bake heater.

Broil Heater

Test procedure and expected resistance values for the broil heater.

Single Surface Units: Left Rear & Right Rear Elements

Test procedure and resistance values for left/right rear single surface elements.

Single Surface Unit: Right Front Element

Test procedure and resistance values for the right front single surface element.

Triple Surface Unit: Right Front Element

Test procedure and resistance values for the right front triple surface element.

Center Rear Element (Warming Zone)

Test procedure and resistance value for the center rear warming zone element.

Composition of Control

Wiring Diagram

Provides a detailed wiring diagram of the appliance's control system.

Key Matrix

Illustrates the key matrix for control panel button interactions.

Main PCB

Shows the main printed circuit board and its location number.

Oven Relay PCB

Shows the oven relay PCB and its location number.

Cook Top Display PCB

Shows the cooktop display PCB and its location number.

Key Pad

Shows the appliance's keypad.

Check the Failure Code

Checking Failure Codes and Steps

Guide on how to check and interpret error codes displayed by the oven.

Failure Code Summary

Lists and describes various failure codes, their detection methods, and check points.

Basic Check Summary

Provides a summary of basic checks for common symptoms and related components.

Checking Flow Chart by Failure

Power Failure (Dead); No Display

Troubleshooting steps for power failure or no display issues.

No Heating; F9 Error Code

Diagnostic steps for troubleshooting no heating or F9 error codes.

Cook Top No Heating

Troubleshooting steps for when the cooktop does not heat.

Door Lock System Failure; F10

Diagnostic steps for door lock system failures or F10 error codes.

Sensing Fail; F1; F2

Troubleshooting steps for sensing failures or F1/F2 error codes.

Oven Hot; F6 Error Code

Diagnostic steps for when the oven is too hot or shows an F6 error.

Keypad Failure; F3 Error

Troubleshooting steps for keypad failures or F3 error codes.

Appendix

Key Operation Test

Guide for testing the functionality of the control panel keys.

Trouble Shooting

Oven and Element Heating Issues

Solutions for oven not operating, elements not heating, or elements heating poorly.

Surface Element, Warming Zone & Indicator Issues

Troubleshooting for surface element heating, warming zone cycling, and warning light failures.

Oven Light & Self-Clean Cycle Problems

Solutions for oven light failures and self-clean cycle start/stop issues.

Timer, Clock, and Oven Function Failures

Solutions for timer, clock, bake, and broil function malfunctions.

Oven Temperature & Door Latch Issues

Troubleshooting for overheating, runaway ovens, and door latch/opening problems.

Element Burnout & Door Difficulty

Causes for premature element burnout and solutions for difficult oven door opening.

Oven Door Alignment & Glass Issues

Solutions for door sagging, improper closing, and broken door glass.

Gasket, Racks & Initial Usage Issues

Care for door gasket, rack fitting, and initial usage smoke/odor.

Self-Clean Smoking & Fan Noise

Solutions for excessive smoking during self-clean and convection fan noise.

Error Codes & Temperature Adjustment

Guidance on error codes and adjusting oven temperature settings.

Schematic Diagram

Appliance Electrical Schematics

Provides detailed schematic diagrams of the appliance's electrical system.

Strip Circuits

Oven Light Circuit

Strip circuit diagram for the oven light.

Clock Display Circuit

Strip circuit diagram for the clock display when ON.

Broil Function Circuit

Strip circuit diagram for the broil function.

Easy Clean Function Circuit

Strip circuit diagram for the easy clean function.

Bake, Cook, Warm, Proof Circuits

Strip circuit diagrams for bake, cook, warm, and proof functions.

Convection Bake;Roast Circuits

Strip circuit diagrams for convection bake and roast.

Self-Cleaning Function Circuit

Strip circuit diagram for the self-cleaning function.

CR (Warming Zone) Circuit

Strip circuit diagram for the CR (Warming Zone) function.

RR Cook-top Element Circuit

Strip circuit diagram for the RR cook-top element.

LR Cook-top Element Circuit

Strip circuit diagram for the LR cook-top element.

RF Cook-top Element Circuit

Strip circuit diagram for the RF cook-top element.

LF Cook-top Element Circuit

Strip circuit diagram for the LF cook-top element.

Exploded View

Controller Parts

Exploded view of the controller assembly components.

Door Parts

Exploded view of the door assembly components.

Cooktop Parts

Exploded view of the cooktop assembly components.

Cavity Parts

Exploded view of the main cavity assembly components.

Drawer Parts

Exploded view of the drawer assembly components.

Summary

Forward

Safety Precautions

Essential safety guidelines for servicing the appliance to prevent hazards.

General

Important Safety Instructions

Crucial safety guidelines to prevent fire, electric shock, injury, or damage during operation.

Model & Serial Number Label and Tech Sheet Locations

Identifies locations for model and serial number labels and tech sheets.

Specifications

Details technical specifications of the electric range model.

Using Your Range

General Information

Provides general information about the range, including rating labels and operational modes.

Control Panel Features

Details the functions and operation of the appliance's control panel buttons and display.

Component Access

Component Locations

Illustrates the locations of key internal components within the appliance.

Removing the Lamp, Controller, Back Cover and Controller Assembly

Detailed steps for removing the lamp, controller, back cover, and related assemblies.

Removing PCBs (Main PCB and Relay PCB)

Procedures for safely removing the Main PCB and Relay PCB.

Removing Surface Elements and Ceramic Glass Cooktop

Steps for removing surface elements and the ceramic glass cooktop.

Removing the Door Latch & Door Switch

Instructions for removing the oven door latch and door switch components.

Removing the Broil Element

Procedure for removing the broil element from the oven.

Removing the Hidden Bake Element

Steps for removing the hidden bake element.

Removing the Convection, Fan Blade and Fan Motor

Guide to removing the convection fan, fan blade, and fan motor.

Removing the Oven Light & Socket Assembly

Instructions for removing the oven light bulb and socket assembly.

Removing the Latch Drive Assembly

Procedure for removing the oven door latch drive assembly.

Removing the Oven Temperature Sensor

Steps for removing the oven temperature sensor.

Removing & Replacing the Lift-off Oven Door

Detailed steps for removing and replacing the lift-off oven door.

Removing the Oven Door Handle

Instructions for removing the oven door handle for different models.

Removing the Oven Doors Inner Glass

Procedure for removing the inner glass of the oven door.

Removing the Oven Door Gasket

Steps for removing and replacing the oven door gasket.

Removing the Side Panel

Guide to removing the side panel of the appliance.

Component Test

Convection Motor

Test procedure and expected resistance values for the convection motor.

Door Locking Motor

Test procedure and expected resistance values for the door locking motor.

Micro Switch

Test procedure for micro switch states (ON/OFF).

Oven Sensor

Test procedure and expected resistance values for the oven sensor.

Convection Heater

Test procedure and expected resistance values for the convection heater.

Door Switch

Test procedure for door switch states (open/closed).

Oven Lamp

Test procedure and expected resistance value for the oven lamp.

Bake Heater

Test procedure and expected resistance values for the bake heater.

Broil Heater

Test procedure and expected resistance values for the broil heater.

Single Surface Units: Left Rear & Right Rear Elements

Test procedure and resistance values for left/right rear single surface elements.

Single Surface Unit: Right Front Element

Test procedure and resistance values for the right front single surface element.

Triple Surface Unit: Right Front Element

Test procedure and resistance values for the right front triple surface element.

Center Rear Element (Warming Zone)

Test procedure and resistance value for the center rear warming zone element.

Composition of Control

Wiring Diagram

Provides a detailed wiring diagram of the appliance's control system.

Key Matrix

Illustrates the key matrix for control panel button interactions.

Main PCB

Shows the main printed circuit board and its location number.

Oven Relay PCB

Shows the oven relay PCB and its location number.

Cook Top Display PCB

Shows the cooktop display PCB and its location number.

Key Pad

Shows the appliance's keypad.

Check the Failure Code

Checking Failure Codes and Steps

Guide on how to check and interpret error codes displayed by the oven.

Failure Code Summary

Lists and describes various failure codes, their detection methods, and check points.

Basic Check Summary

Provides a summary of basic checks for common symptoms and related components.

Checking Flow Chart by Failure

Power Failure (Dead); No Display

Troubleshooting steps for power failure or no display issues.

No Heating; F9 Error Code

Diagnostic steps for troubleshooting no heating or F9 error codes.

Cook Top No Heating

Troubleshooting steps for when the cooktop does not heat.

Door Lock System Failure; F10

Diagnostic steps for door lock system failures or F10 error codes.

Sensing Fail; F1; F2

Troubleshooting steps for sensing failures or F1/F2 error codes.

Oven Hot; F6 Error Code

Diagnostic steps for when the oven is too hot or shows an F6 error.

Keypad Failure; F3 Error

Troubleshooting steps for keypad failures or F3 error codes.

Appendix

Key Operation Test

Guide for testing the functionality of the control panel keys.

Trouble Shooting

Oven and Element Heating Issues

Solutions for oven not operating, elements not heating, or elements heating poorly.

Surface Element, Warming Zone & Indicator Issues

Troubleshooting for surface element heating, warming zone cycling, and warning light failures.

Oven Light & Self-Clean Cycle Problems

Solutions for oven light failures and self-clean cycle start/stop issues.

Timer, Clock, and Oven Function Failures

Solutions for timer, clock, bake, and broil function malfunctions.

Oven Temperature & Door Latch Issues

Troubleshooting for overheating, runaway ovens, and door latch/opening problems.

Element Burnout & Door Difficulty

Causes for premature element burnout and solutions for difficult oven door opening.

Oven Door Alignment & Glass Issues

Solutions for door sagging, improper closing, and broken door glass.

Gasket, Racks & Initial Usage Issues

Care for door gasket, rack fitting, and initial usage smoke/odor.

Self-Clean Smoking & Fan Noise

Solutions for excessive smoking during self-clean and convection fan noise.

Error Codes & Temperature Adjustment

Guidance on error codes and adjusting oven temperature settings.

Schematic Diagram

Appliance Electrical Schematics

Provides detailed schematic diagrams of the appliance's electrical system.

Strip Circuits

Oven Light Circuit

Strip circuit diagram for the oven light.

Clock Display Circuit

Strip circuit diagram for the clock display when ON.

Broil Function Circuit

Strip circuit diagram for the broil function.

Easy Clean Function Circuit

Strip circuit diagram for the easy clean function.

Bake, Cook, Warm, Proof Circuits

Strip circuit diagrams for bake, cook, warm, and proof functions.

Convection Bake;Roast Circuits

Strip circuit diagrams for convection bake and roast.

Self-Cleaning Function Circuit

Strip circuit diagram for the self-cleaning function.

CR (Warming Zone) Circuit

Strip circuit diagram for the CR (Warming Zone) function.

RR Cook-top Element Circuit

Strip circuit diagram for the RR cook-top element.

LR Cook-top Element Circuit

Strip circuit diagram for the LR cook-top element.

RF Cook-top Element Circuit

Strip circuit diagram for the RF cook-top element.

LF Cook-top Element Circuit

Strip circuit diagram for the LF cook-top element.

Exploded View

Controller Parts

Exploded view of the controller assembly components.

Door Parts

Exploded view of the door assembly components.

Cooktop Parts

Exploded view of the cooktop assembly components.

Cavity Parts

Exploded view of the main cavity assembly components.

Drawer Parts

Exploded view of the drawer assembly components.

LG LRE3194ST Specifications

General IconGeneral
TypeFreestanding
Fuel TypeElectric
ColorStainless Steel
Number of Burners5
Number of Elements5
Oven Capacity6.3 cu. ft.
ConvectionYes
Self-CleaningYes
Warming ZoneYes
Cooktop SurfaceCeramic Glass
Width30 inch

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