Table of Contents
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30" Freestanding Electric Range
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MODEL:
LRE3193BD
LRE3193ST
LRE3193BM
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means), publication, modification, copying or transmission of
this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this
Service Manual. The material covered by this prohibition includes, without limitation, any text, graphics or logos in this Service Manual.
Copyright © 2017 LG Electronics Inc. All rights reserved. Only training and service purposes
P/NO.: MFL37118360
LRE3193SB
LRE3193SW
Internal Use Only
February,2017
Printed in Korea
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Table of Contents
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Summarization of Contents
General Information and Safety
Important Safety Instructions
Key safety warnings and precautions for operating the appliance.
Model and Serial Number Label Locations
Identifies where to find the appliance's model and serial number labels.
Specifications
Details the technical specifications of the electric range.
Using Your Range
General Information
Provides an overview of the appliance's features and operation.
Control Panel Features
Explains the function of each button and display element on the control panel.
Component Access Procedures
Component Locations
Illustrates the location of various internal components within the range.
Removing Lamp, Controller, and Back Cover Assembly
Step-by-step guide for disassembling key internal assemblies for service.
Component Testing Procedures
Convection Motor Test
Procedure and expected resistance values for testing the convection motor.
Oven Sensor Test
Testing method and resistance specifications for the oven temperature sensor.
Door Switch Test
How to test the door switch continuity in different states.
Oven Lamp Test
Procedure for testing oven lamp resistance and continuity.
Outer Broil Heater Test
Resistance testing procedure for the outer broil heating element.
Broil Heater Test
Resistance testing procedure for the inner broil heating element.
Convection Heater Test
Resistance testing procedure for the convection heating element.
Single Surface Element Tests
Testing procedures for single cooktop heating elements.
Dual Surface Element Tests
Testing procedures for dual cooktop heating elements.
Center Rear Warming Zone Element Test
Resistance test for the center rear warming zone element.
Composition of Control System
Wiring Diagram
Visual representation of the appliance's electrical connections and components.
Key Matrix
Shows the matrix of button inputs and their corresponding control signals.
Main PCB Identification
Identification and location of the main printed circuit board.
Oven Relay PCB Identification
Identification and location of the oven relay printed circuit board.
Cook Top Display PCB
Identification and layout of the cooktop display PCB.
Control Panel (Glass Touch)
Details of the touch control panel assembly.
Failure Code Diagnostics
How to Check Failure Codes
Instructions on how to access and view error codes displayed by the oven.
Failure Code Descriptions
Explains common error codes (F1, F2, F3, F6, F9) and their possible causes.
Basic Check Summary
Oven Lamp Not Operating
Basic checks for when the oven lamp fails to function.
Oven Hot (F6) Error
Troubleshooting steps for the 'Oven hot' error code.
No Heating (F9) Error
Troubleshooting steps for the 'No heating' error code.
Troubleshooting Flow Charts
Power Failure (Dead) or No Display
Flowchart for diagnosing power failure and no display issues.
No Heating / F9 Error
Troubleshooting flowchart for 'No heating' or F9 errors.
Sensing Fail (F1, F2)
Troubleshooting flowchart for sensor failure errors.
Oven Hot (F6) Error
Troubleshooting flowchart for oven overheating errors.
Glass Touch Failure / F3 Error
Flowchart for diagnosing glass touch control failures.
Appendix: Key Operation Test
Key Operation Test Sequence
Sequence for testing the functionality of control panel buttons.
Trouble Shooting Guide
Oven Not Operating
Common causes and solutions for a non-operational oven.
Oven Element Does Not Heat
Troubleshooting for issues with heating elements not working.
Oven Door Difficult to Open
Solutions for a stiff or difficult-to-open oven door.
Convection Fan Noise
Possible causes and remedies for noise from the convection fan.
Schematic Diagrams
Radiant Cook-Top Schematic
Electrical schematic for the radiant cooktop elements.
Convection Bake/Roast Schematic
Schematic for convection baking and roasting functions.
Cook-Top Element Schematics
Specific schematics for individual cooktop elements.
Exploded Views
Door Parts
Exploded view illustrating the components of the oven door assembly.
Controller Parts
Exploded view of the control panel and associated components.
Cooktop Parts
Exploded view showing the components of the cooktop surface.
Drawer Parts
Exploded view of the drawer assembly and its parts.
Cavity Parts
Exploded view detailing the internal cavity components of the oven.
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