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LG LRE30453ST Service Manual

LG LRE30453ST
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30” Freestanding Electric Range
SERVICE MANUAL
MODEL: LRE30453SW
LRE30453SB
LRE30453ST
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Website http://biz.lgservice.com
P/NO : MFL37118303
February, 2008
Printed in Korea
Internal Use Only

Table of Contents

Other manuals for LG LRE30453ST

Questions and Answers:

LG LRE30453ST Specifications

General IconGeneral
Number of Burners5
Self-CleaningYes
Convection OvenYes
Fuel TypeElectric
ColorStainless Steel
Warming ZoneNo
TypeFreestanding
Cooktop SurfaceSmooth Surface
Width29.88 inches

Summary

30" Freestanding Electric Range SERVICE MANUAL

FORWARD

SAFETY PRECAUTIONS

Important safety information and warnings for servicing the appliance.

GENERAL

Important Safety Instructions

Crucial safety guidelines before using or servicing the range.

Model & Specifications

Information on locating model labels and key specifications.

COMPONENT TEST

Motor, Switch, and Sensor Tests

Procedures for testing motors, switches, and sensors.

Heating Element and Lamp Tests

Procedures for testing heating elements and the oven lamp.

Surface Unit Tests

Testing procedures for all types of cooktop surface units.

GENERAL

Important Safety Instructions

Critical safety guidelines for oven operation and servicing.

Operational Safety Precautions

Specific warnings and cautions for using the oven and its components.

GENERAL

Important Safety Instructions

Additional safety guidelines for appliance installation and use.

Anti-Tip Device Installation

Instructions and warnings regarding anti-tip bracket installation.

GENERAL

Important Safety Instructions

Detailed safety advice for surface cooking, self-cleaning, and ventilation.

Surface Unit and Oven Safety

Safety advice for surface units, self-cleaning ovens, and oven ventilation.

GENERAL

Model & Serial Number Locations

Visual guide to finding model and serial number labels.

GENERAL

Specifications

Technical specifications for the electric range models.

USING YOUR RANGE

General Information and Modes

Information on rating labels, modes, and functional operations.

USING YOUR RANGE

Control Panel Features

Description and function of each button on the control panel.

USING YOUR RANGE

Surface Unit and Warming Zone Operation

How to turn on surface units and the warming zone.

Clock, Timer, and Settings Adjustments

Setting clock, timer, and adjusting various settings like beep volume.

USING YOUR RANGE

Oven Temperature and Mode Adjustments

Adjusting thermostat, bake, broil, and convection modes.

Oven Lockout, Proofing, and Self-Clean

Functions for oven lockout, proofing, and self-cleaning.

COMPONENT ACCESS

Component Locations Overview

Diagram showing the location of major internal components.

COMPONENT ACCESS

Removing Back, Control Cover, and Key Membrane

Step-by-step guide to remove the back cover and control assembly.

COMPONENT ACCESS

Removing Control Boards (PCB)

Instructions for removing the main control boards.

COMPONENT ACCESS

Removing Cooktop Elements and Glass

Procedure for removing cooktop elements and the glass surface.

COMPONENT ACCESS

Removing Door Latch and Switch

Steps to remove the oven door latch and switch.

COMPONENT ACCESS

Removing Broil Element

Guide to removing the broil heating element.

COMPONENT ACCESS

Removing Hidden Bake Element

Steps to remove the hidden bake heating element.

COMPONENT ACCESS

Removing Convection Components

Procedure for removing convection element, fan blade, and motor.

COMPONENT ACCESS

Removing Oven Light Assembly

Guide to replacing the oven light and socket.

COMPONENT ACCESS

Removing Latch Drive Assembly

Steps to remove the door latch drive mechanism.

COMPONENT ACCESS

Removing Oven Temperature Sensors

Procedure for removing the oven temperature sensors.

COMPONENT ACCESS

Removing Storage Drawer

Guide to remove and replace the storage drawer.

COMPONENT ACCESS

Removing and Replacing Oven Door

Instructions for removing and reinstalling the oven door.

COMPONENT ACCESS

Removing Oven Door Handle and Glass

Steps to remove the oven door handle and glass components.

COMPONENT ACCESS

Removing Hinge Hanger and Door Glass

Procedures to remove hinge hanger and oven door glass assemblies.

COMPONENT ACCESS

Removing Oven Door Gasket

Guide to removing and replacing the oven door gasket.

COMPONENT ACCESS

Removing a Side Panel

Procedure to remove one of the side panels of the range.

COMPONENT TEST

Convection Motor Test

Procedure to test the convection motor resistance.

COMPONENT TEST

Motor, Switch, and LVT Tests

Testing procedures for door locking motor, micro switch, and LVT.

COMPONENT TEST

Sensor and Door Switch Tests

Procedures for testing oven sensor and door switch resistance.

Broil and Bake Element Tests

Procedures for testing broil and bake element resistance.

COMPONENT TEST

Oven Lamp Test

Procedure to measure the oven lamp resistance.

COMPONENT TEST

Single Surface Unit Tests

Testing resistance and temperature behavior of single surface units.

COMPONENT TEST

Warming Zone Element Test

Testing resistance and temperature behavior of the warming zone element.

COMPONENT TEST

Dual Surface Element Test

Testing resistance and temperature behavior of the dual surface element.

COMPOSITION OF CONTROL

Control Board Overview

Overview of Main PCB, Cook Top Display PCB, and Oven Relay PCB.

COMPOSITION OF CONTROL

Main PCB Functions

Detailed functions and responsibilities of the Main PCB.

COMPOSITION OF CONTROL

Display and Relay PCB Functions

Main functions of the Cook-top Display PCB and Oven Relay PCB.

FAILURE MODE FLOW CHART

Troubleshooting No Display (No Power)

Flowchart for diagnosing and resolving 'no display' issues.

FAILURE MODE FLOW CHART

Troubleshooting No Display (Part 2)

Continuation of 'no display' troubleshooting flowchart.

FAILURE MODE FLOW CHART

Troubleshooting No Display (Part 3)

Further steps for 'no display' issues involving harness and transformer.

FAILURE MODE FLOW CHART

Troubleshooting Oven Not Heating

Flowchart for diagnosing and resolving 'oven does not heat' errors.

FAILURE MODE FLOW CHART

Troubleshooting Oven Not Heating (Part 2)

Continuation of 'oven does not heat' flowchart, checking broil heater.

FAILURE MODE FLOW CHART

Troubleshooting Oven Not Heating (Part 3)

Further steps for 'oven does not heat' including sensor and PCB checks.

FAILURE MODE FLOW CHART

Troubleshooting Cook-top Not Heating

Flowchart for diagnosing 'cook-top does not heat' issues.

FAILURE MODE FLOW CHART

Troubleshooting Cook-top Not Heating (Part 2)

Continuation of 'cook-top does not heat' flowchart, checking main PCB.

FAILURE MODE FLOW CHART

Troubleshooting Oven Lamp Not Operating

Flowchart for diagnosing 'oven lamp does not operate' issues.

FAILURE MODE FLOW CHART

Troubleshooting No Key Input

Flowchart for diagnosing 'no key input' issues.

FAILURE CODES

Key, Door Lock, and Sensor Error Codes

Explains F1-F4 codes and corrective actions for key, door lock, and sensor issues.

Heating and Hot Oven Error Codes

Explains F7-F9 codes for heating errors and hot oven conditions.

F-CODE FLOW CHART

F-1 Error: Key Short Troubleshooting

Flowchart for diagnosing and resolving the F-1 key short error.

F-CODE FLOW CHART

F-2 Error: Door Lock Fail Troubleshooting

Flowchart for F-2 error, checking micro switch and connections.

F-CODE FLOW CHART

F-2 Error: Door Lock Fail Troubleshooting (Part 2)

Continuation of F-2 error flowchart, checking motor and main PCB.

F-CODE FLOW CHART

F-2 Error: Door Lock Fail Troubleshooting (Part 3)

Final steps for F-2 error, inspecting connector pin solder on main PCB.

F-CODE FLOW CHART

F-3/F-4 Error: Oven Sensing Error Troubleshooting

Flowchart for F-3/F-4 errors, checking oven sensor connection and resistance.

F-CODE FLOW CHART

F-3/F-4 Error: Oven Sensing Error Troubleshooting (Part 2)

Continuation of F-3/F-4 error flowchart, checking PCB connector solder.

F-CODE FLOW CHART

F-9 Error: Oven Too Hot Troubleshooting

Flowchart for F-9 error, checking for welded bake relay.

F-CODE FLOW CHART

F-9 Error: Oven Too Hot Troubleshooting (Part 2)

Continuation of F-9 error flowchart, checking broil relay and PCBs.

TROUBLE SHOOTING

Oven Operation and Heating Issues

Troubleshooting common problems like oven not operating or elements not heating.

TROUBLE SHOOTING

Timer, Bake, Broil, and Overheating Issues

Troubleshooting issues with timers, baking, broiling, and overheating.

TROUBLE SHOOTING

Door, Gasket, Racks, and Noise Issues

Troubleshooting door alignment, gasket, racks, and convection fan noise.

SCHEMATIC DIAGRAM

Overall Wiring Schematic

Comprehensive wiring diagram for the electric range.

STRIP CIRCUITS

Bake, Cook & Warm, Proof Circuits

Strip circuit diagram for bake, cook & warm, and proof functions.

Broil Circuit

Strip circuit diagram for the broil function.

STRIP CIRCUITS

Self Cleaning and Clock Display Circuits

Strip circuit diagrams for self-cleaning and clock display functions.

STRIP CIRCUITS

Convection and Warming Zone Circuits

Strip circuit diagrams for convection and warming zone functions.

Cook-top Element Circuits

Strip circuit diagrams for cook-top elements.

STRIP CIRCUITS

LR, RF, LF Cook-top Element Circuits

Strip circuit diagrams for LR, RF, and LF cook-top elements.

EXPLODED VIEW

Exploded View Introduction

Overview of exploded view diagrams for component identification.

EXPLODED VIEW

Door Parts Exploded View

Exploded diagram of the oven door components.

EXPLODED VIEW

Controller Parts Exploded View

Exploded diagram of the control panel and related parts.

EXPLODED VIEW

Cooktop Parts Exploded View

Exploded diagram of the cooktop heating elements and support.

EXPLODED VIEW

Drawer Parts Exploded View

Exploded diagram of the drawer and its slides.

EXPLODED VIEW

Cavity Parts Exploded View

Exploded diagram of the oven cavity and internal components.

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