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Table of Contents
Related Manuals for LG LRE30755
Summarization of Contents
FORWARD
SAFETY PRECAUTIONS
Essential safety guidelines for appliance operation and service.
GENERAL
IMPORTANT SAFETY INSTRUCTIONS
Crucial safety advice for preventing hazards during appliance use.
MODEL & SERIAL NUMBER LABEL AND TECH SHEET LOCATIONS
Identifies the locations of model/serial number labels and tech sheets.
SPECIFICATIONS
Detailed specifications for different models of the electric range.
USING YOUR RANGE
GENERAL INFORMATION
Overview of the electric range's operation and features.
FUNCTIONAL OPERATION
Explanation of how different cooking modes (Bake, Broil, Convection) work.
COOKING GUIDE
Recommendations for rack position, times, and temperatures for best results.
CONTROL PANEL FEATURES
Detailed explanation of the control panel layout and buttons for models LRE30451 and LRE30755.
PAD DESCRIPTIONS
Explains the function of each pad on the control panel.
SURFACE UNIT OPERATION
Instructions on how to operate single and dual surface units and warming zones.
SETTING THE CLOCK
Step-by-step guide to setting the clock.
TIMER OPERATION
Instructions for setting and canceling the oven timer.
OPTIONS PAD FEATURES
Detailed explanation of various functions available via the OPTIONS pad.
BAKE, TIMED BAKE, DELAYED TIMED BAKE
Instructions for using Bake, Timed Bake, and Delayed Timed Bake functions.
BROIL OPERATION
How to use the Broil function (Hi/Low settings).
CONVECTION BAKE / ROAST OPERATION
Instructions for using Convection Bake and Convection Roast modes.
FAVORITES OPERATION
How to use the Favorites function for stored baking programs.
COOK & WARM OPERATION
Instructions for keeping cooked food warm.
OVEN LOCKOUT
How to activate and reactivate the oven lockout feature.
CLOCK HOUR MODE CHANGE
How to switch between 12-hour and 24-hour clock modes.
PROOF FUNCTION
Instructions for using the Proof function for yeast-leavened products.
SELF-CLEAN OPERATION
How to use the self-cleaning function.
WARMING DRAWER OPERATION
Instructions for using the warming drawer and its rack positions.
COMPONENT ACCESS
COMPONENT LOCATIONS
Diagram showing the locations of various internal components within the range.
REMOVING THE BACK, CONTROL COVER AND KEY MEMBRANE ASSEMBLY
Step-by-step guide to removing the back panel, control cover, and key membrane.
REMOVING THE CONTROL POWER SUPPLY AND POWER CONTROL BOARD (PCB)
Procedure for removing the control power supply and power control boards.
REMOVING THE SURFACE ELEMENTS AND THE CERAMIC GLASS COOKTOP
Instructions for removing cooktop surface elements and the glass cooktop.
REMOVING THE DOOR LATCH & DOOR SWITCH
Steps to remove the door latch mechanism and door switch.
REMOVING THE BROIL ELEMENT
Procedure for removing the oven's broil heating element.
REMOVING THE HIDDEN BAKE ELEMENT
Steps for removing the hidden bake heating element.
REMOVING THE CONVECTION ELEMENT, FAN BLADE AND FAN MOTOR
Instructions for removing the convection element, fan blade, and fan motor.
REMOVING THE OVEN LIGHT & SOCKET ASSEMBLY
Procedure for removing the oven light and its socket assembly.
REMOVING THE LATCH DRIVE ASSEMBLY
Steps to remove the door latch drive assembly and its mechanism.
REMOVING THE OVEN TEMPERATURE SENSORS
Procedure for removing the oven temperature sensor.
REMOVING THE WARMING DRAWER ELEMENT & TEMPERATURE SENSOR
Instructions for removing the warming drawer element and temperature sensor.
REMOVING & REPLACING THE LIFT-OFF OVEN DOOR
Step-by-step guide for removing and replacing the oven door.
REMOVING THE OVEN DOOR HANDLE & GLASS
Procedure for removing the oven door handle and glass components.
REMOVING A HINGE HANGER ASSEMBLY
Steps to remove the hinge hanger assembly from the door.
REMOVING THE OVEN DOOR GLASS ASSEMBLY
Procedure for removing the oven door glass assembly.
REMOVING THE OVEN DOOR GASKET
Instructions for removing and replacing the oven door gasket.
REMOVING A SIDE PANEL
Steps for removing a side panel of the appliance.
COMPONENT TEST
GENERAL TEST PRECAUTIONS
Important checks and warnings before performing component tests.
COMPONENT RESISTANCE TESTS
Test procedures and normal resistance values for various components.
ELEMENT RESISTANCE TESTS
Test procedures and resistance values for heating elements.
SINGLE SURFACE UNIT TESTS
Test procedures and resistance values for single surface units.
CENTER REAR ELEMENT / WARMING ZONE TEST
Test procedures and resistance values for the center rear element/warming zone.
DUAL SURFACE ELEMENT TEST
Test procedures and resistance values for the dual surface element.
COMPOSITION OF CONTROL
PCB ASSEMBLIES OVERVIEW
Overview of the different Printed Circuit Board (PCB) assemblies in the control system.
MAIN PCB FUNCTIONS
Detailed functions and responsibilities of the Main PCB.
COOK-TOP DISPLAY PCB FUNCTIONS
Functions of the Cook-top Display PCB.
COOK-TOP RELAY PCB FUNCTIONS
Functions of the Cook-top Relay PCB.
OVEN RELAY PCB FUNCTIONS
Functions of the Oven Relay PCB.
CHECKING FLOW CHART BY FAILURE MODE
NO DISPLAY (NO POWER) TROUBLESHOOTING
Flowchart for diagnosing and resolving "No Display" or "No Power" issues.
FAILURE MODE FLOW CHART
NO DISPLAY (NO POWER) TROUBLESHOOTING (Warming Drawer Display)
Flowchart for diagnosing "No Display" issues related to the warming drawer.
NO DISPLAY (NO POWER) TROUBLESHOOTING (Oven Display)
Flowchart for diagnosing "No Display" issues related to the oven display.
NO DISPLAY (NO POWER) TROUBLESHOOTING (Power Transformer)
Flowchart for diagnosing "No Display" issues related to the power transformer.
OVEN DOES NOT HEAT TROUBLESHOOTING
Flowchart for diagnosing and resolving "Oven does not heat" issues.
OVEN DOES NOT HEAT TROUBLESHOOTING (Heaters)
Troubleshooting steps for oven not heating, focusing on heaters.
OVEN DOES NOT HEAT TROUBLESHOOTING (Sensor/Relay)
Troubleshooting steps for oven not heating, focusing on sensors and relays.
COOK-TOP DOES NOT HEAT TROUBLESHOOTING (Connections)
Flowchart for diagnosing "Cook-top does not heat" issues, checking connections.
COOK-TOP DOES NOT HEAT TROUBLESHOOTING (PCB)
Flowchart for diagnosing "Cook-top does not heat" issues, focusing on PCBs.
OVEN LAMP DOES NOT OPERATE TROUBLESHOOTING
Flowchart for diagnosing and resolving "Oven lamp does not operate" issues.
NO KEY INPUT TROUBLESHOOTING
Flowchart for diagnosing and resolving "No key input" issues.
FAILURE CODES
"F" (FAILURE) DISPLAY CODES
Explanation of various "F" error codes and their corrective actions.
F-CODE FLOW CHART
F-1 ERROR (KEY SHORT)
Flowchart for troubleshooting the F-1 error (key short).
F-2 ERROR (DOOR LOCK SYSTEM)
Flowchart for troubleshooting the F-2 error (door lock system).
F-2 ERROR (DOOR LOCK SYSTEM) PCB INSPECTION
Inspection of PCB connector solder for F-2 error troubleshooting.
F-3, F-4 ERROR (MAIN OVEN SENSING)
Flowchart for troubleshooting F-3/F-4 errors (main oven sensing).
F-3, F-4 ERROR (MAIN OVEN SENSING) PCB INSPECTION
Inspection of PCB connectors and solder for F-3/F-4 errors.
F-5, F-6 ERROR (WARMING DRAWER SENSING)
Flowchart for troubleshooting F-5/F-6 errors (warming drawer sensing).
F-5, F-6 ERROR (WARMING DRAWER SENSING) PCB INSPECTION
Inspection of PCB connectors and solder for F-5/F-6 errors.
F-9 ERROR (OVEN TOO HOT)
Flowchart for troubleshooting the F-9 error (oven too hot).
F-9 ERROR (OVEN TOO HOT) RELAY INSPECTION
Inspection of relays for F-9 error troubleshooting.
APPENDIX A (SCHEMATIC DIAGRAM OF PCB)
SCHEMATIC DIAGRAM OF PCBS
Detailed schematic diagrams of the various PCB assemblies.
TROUBLE SHOOTING
COMMON OVEN PROBLEMS
Lists common oven problems, their causes, and solutions.
ADDITIONAL OVEN PROBLEMS
Lists additional oven problems, their causes, and solutions.
OVEN DOOR AND CONVECTION FAN ISSUES
Troubleshooting for oven door problems and convection fan noise.
OVEN TEMPERATURE AND FAILURE CODES
Troubleshooting oven temperature issues and failure codes.
SCHEMATIC DIAGRAM
RADIANT COOK-TOP SCHEMATICS
Wiring diagrams for the radiant cook-top elements.
STRIP CIRCUITS
BAKE/COOK & WARM / PROOF CIRCUIT
Specific circuit diagrams for Bake, Cook & Warm, and Proof functions.
BROIL CIRCUIT
Specific circuit diagram for the Broil function.
OVEN LIGHT CIRCUIT
Specific circuit diagram for the Oven Light.
WARMING DRAWER CIRCUIT
Specific circuit diagram for the Warming Drawer.
SELF CLEANING CIRCUIT
Specific circuit diagram for the Self-Cleaning function.
CLOCK DISPLAY CIRCUIT
Specific circuit diagram for the Clock Display.
CONVECTION BAKE / CONVECTION ROAST CIRCUIT
Specific circuit diagrams for Convection Bake and Roast functions.
CR (WARMING ZONE) CIRCUIT
Specific circuit diagram for the CR (Warming Zone).
COOK-TOP ELEMENT CIRCUITS
Specific circuit diagrams for RR, LR, LF, and RF cook-top elements.
EXPLODED VIEW
INTRODUCTION (I)
Overview of exploded views for different parts categories of the range.
INTRODUCTION (II)
Further overview of exploded views for different parts categories of the range.
DOOR PARTS (I)
Exploded view of the oven door components.
DOOR PARTS (II)
Further exploded view of oven door components.
CONTROLLER PARTS
Exploded view of the control panel and related components.
COOKTOP PARTS
Exploded view of the cooktop components and heating elements.
DRAWER PARTS
Exploded view of the drawer assembly and its parts.
CAVITY PARTS
Exploded view of the oven cavity and internal components.
DRAWER PARTS (for LRE30451)
Exploded view of the drawer assembly and its parts for a specific model.
CAVITY PARTS (for LRE30451)
Exploded view of the oven cavity and internal components for a specific model.
PARTS LIST
MODEL DESIGNATORS AND FACTORY MODELS
List of model designators and their corresponding factory model suffixes.
PARTS DESCRIPTIONS (A-Z)
Detailed list of parts with part numbers, descriptions, and designators.
PARTS DESCRIPTIONS (A-Z) CONTINUED
Continued detailed list of parts with part numbers and descriptions.
PARTS DESCRIPTIONS (A-Z) CONTINUED
Continued detailed list of parts with part numbers and descriptions.
PARTS DESCRIPTIONS (A-Z) CONTINUED
Continued detailed list of parts with part numbers and descriptions.
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