Table of Contents
Advertisement
Quick Links
ELECTRIC & GAS DRYER
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS PROPERLY AND TO PROVIDE
QUALITY SERVICE SAFELY ON THESE DRYERS.
FOR LG TECHNICIAN
MODEL :
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 ©
2016 - 2017
LG Electronics Inc. All rights reserved. Only training and service purposes.
U.S.A. Website: http://us.lgservice.com
Canadian Website: http://lg.ca
Electric
DLEX4270*/01
1
CONFIDENTIAL
Gas
DLGX4271*/01
Advertisement
Table of Contents
Related Manuals for LG DLGX4271 /01 Series
Summarization of Contents
Electric & Gas Dryer Service Manual
General Safety Precautions
READ THIS MANUAL CAREFULLY TO DIAGNOSE PROBLEMS PROPERLY AND TO PROVIDE QUALITY SERVICE SAFELY ON THESE DRYERS.
Model Identification
MODEL: Electric DLEX4270*/01 Gas DLGX4271*/01
Important Safety Notices
Grounding Device Reconnection
RECONNECT ALL GROUNDING DEVICES
Gas Leak Response Procedure
WHAT TO DO IF YOU SMELL GAS:
Electrostatic Discharge (ESD) Safety
IMPORTANT Electrostatic Discharge (ESD) Sensitive Electronics
Specifications and Features
Dryer Dimensions and Capacity
Details on dryer size, capacity, and weight.
Accessory Options: Stacking & Pedestal
Information on stacking kits and pedestals.
Detailed Specifications Table
Table covering material, power, programs, and sensors.
Installation Procedures
Dryer Rack Installation Guide
Steps for installing the drying rack inside the drum.
Stacking Kit Installation Instructions
How to securely install the stacking kit for the dryer.
Pedestal Installation Instructions
How to securely install the dryer pedestal.
Electrical Connection Guide
4-Wire Dryer Electrical Connection
Options for 4-wire receptacle and direct wiring.
3-Wire Dryer Electrical Connection Options
Options for 3-wire receptacle and direct wiring.
Gas Supply Connection
Connecting Gas Supply Pipe
Procedure and requirements for connecting the gas supply.
Dryer Cycle Operations
Sensor Dry Cycle Details
Guide for sensor dry cycles including temperature and time.
Manual Dry Cycle Details
Guide for manual dry cycles including temperature and time.
Component Testing Procedures
Thermal and Switch Component Tests
Tests for thermal cut-offs, thermostats, and switches.
Lamp, Thermistor, Gas Valve, and Igniter Tests
Tests for lamp holder, thermistor, gas valve, igniter, and flame detector.
Motor Diagnostics
Motor Diagram and Centrifugal Switch Operation
Schematic and operation of motor components including centrifugal switch.
Wiring Diagrams
Electric Dryer Wiring Schematic
Wiring diagram for electric dryer models.
Gas Dryer Wiring Schematic
Wiring diagram for gas dryer models.
Main PCB Identification
Electric and Gas Main PCB Layout
Visual identification of main PCBs for electric and gas dryers.
Steam Functionality
Steam Cycle Operation Guide
Details on steam cycles including time, control, and fabric type.
Steam Function Troubleshooting
Troubleshooting Steam Cycle Issues
Common problems and solutions for steam function.
Display Fault and Error Codes
Interpreting Error Codes
List and explanation of display fault and error codes.
Tag On Functionality
Setting Up and Using Tag On
Instructions for smartphone integration via NFC.
Troubleshooting by Symptom
Electric Dryer: No Heat Troubleshooting
Diagnostic steps for no heat issues in electric dryers.
Thermistor Resistance Data
Thermistor Temperature vs. Resistance
Table showing thermistor resistance values at different temperatures.
Electric Dryer Heating Circuit Diagnostics
Heating Circuit Diagnosis Flowchart
Step-by-step troubleshooting for electric dryer heating problems.
Gas Dryer Component Tests
Gas Dryer Wiring Schematic Overview
Wiring diagram for gas dryer models.
Gas Component Test Points
Specific test points for gas dryer components.
Gas Dryer Component Measurements
PWB, Valve, and Thermistor Readings
Expected values for gas dryer PWB, valves, and thermistor.
Gas Dryer Heating Troubleshooting
Gas Heating Circuit Diagnosis Flowchart
Step-by-step troubleshooting for gas dryer heating problems.
Not Tumbling Troubleshooting
Drum Rotation Troubleshooting Steps
Diagnostics for non-tumbling issues in electric/gas dryers.
Not Tumbling Circuit Diagnostics
Troubleshooting Motor and Belt Issues
Flowchart focusing on motor and belt problems for tumbling.
Flow Sensor Functionality
FlowSense Clogging Detection
How the sensor indicates duct clogging.
Installation Test: Exhaust System Check
Performing the Exhaust System Test
Procedure to verify exhaust system performance.
Flow Sensor Error Code Troubleshooting
Troubleshooting Flow Sensor Error Codes
Specific error codes and their resolutions for flow sensor.
Diagnostic Test Mode Procedures
Activating the Diagnostic Test Mode
Steps to enter the diagnostic test mode.
Diagnostic Test Step-by-Step
Details on performing various diagnostic tests.
Electrical Supply and Controller Tests
Test 1: 120V AC Electrical Supply Verification
Checking voltage at the outlet and controller.
Tab Relay Connections
Electric Dryer Tab Relay Connections
Wiring and status for electric tab relays.
Incorrect Tab Relay Connections
Gas Dryer Tab Relay Connections
Wiring and status for gas tab relays.
Consequences of Incorrect Wiring
Explains issues from wrong connections.
Thermistor Test Procedure
Test 2: Thermistor Resistance Measurement
Measuring thermistor resistance with power off.
Motor Test Procedures
Test 3: Motor Functionality Check
Testing motor operation and related components.
Moisture Sensor Test
Test 4: Moisture Sensor Functionality Check
Functional and mechanical tests for the moisture sensor.
Door Switch Test Procedure
Test 5: Door Switch and Light System Test
Testing the door switch and drum light functionality.
Heater Switch Test (Electric)
Test 6: Electric Heater Switch Verification
Testing heater switches on electric dryer models.
Gas Valve Test Procedure
Test 7: Gas Valve Operation and Resistance
Testing gas valve voltage and resistance.
Motor, Pump, and Generator Assembly Tests
Test 8: DC Motor and Pump Test
Testing the DC motor and pump assembly.
Test 9: Generator Assembly Test
Testing the generator assembly.
Gas Setting Conversion
Adjusting Gas Valve Settings
Procedure for changing gas valve settings.
Replacing Gas Orifices
Procedure for changing gas orifices for conversion.
Gas Valve Flow and Ignition Sequence
Ignition and Drying Sequence
Flowchart of gas valve operation and ignition process.
Disassembly Instructions
Top Plate Removal Procedure
Steps for removing the top plate of the dryer.
Component Assembly Disassembly
Panel Drawer and Steam Feeder Removal
Steps for disassembling the panel drawer and steam feeder.
PCB Assembly Access
Steps to access the main PCB.
Control Panel Assembly Disassembly
Removing the Control Panel
Steps to remove the control panel unit.
Cabinet Cover Disassembly
Removing the Dryer Cabinet Cover
Steps to remove the main cabinet cover.
Guide Assembly Removal
Disassembling the Guide Assembly
Steps to remove the guide assembly.
Frame Body and Panel Frame Disassembly
Disassembling the Frame Body
Steps to disassemble the frame body.
Drum Assembly and Lamp Replacement
Front Drum and Bulkhead Removal
Steps for front drum disassembly.
Drum Removal Procedure
Steps for removing the drum assembly.
Replacing the Drum Lamp
Instructions for changing the drum lamp.
Dryer Exhaust Duct Modification
Exhaust Vent Rearrangement
Steps for modifying the dryer exhaust vent.
Major Component Disassembly
Filter Assembly Removal
Steps to remove the filter assembly.
Blower Housing Removal
Steps to remove the blower housing.
Back Cover Removal
Steps to remove the back cover.
Air Duct and Roller Replacement
Air Duct Removal Procedure
Steps for removing the air duct.
Roller Replacement Procedure
Steps for replacing rollers.
Exploded View Diagrams
Control Panel and Plate Assembly Exploded View
Parts breakdown for control panel and plate assembly.
Panel Drawer and Guide Assembly Exploded View
Exploded View: Panel Drawer Components
Parts breakdown for panel drawer components.
Cabinet and Door Assembly Exploded Views
Electric Type Cabinet and Door Exploded View
Parts breakdown for electric dryer cabinet and door.
Gas Type Cabinet and Door Exploded View
Exploded View: Gas Dryer Cabinet and Door
Parts breakdown for gas dryer cabinet and door.
Drum and Motor Assembly Exploded Views
Electric Type Drum and Motor Exploded View
Parts breakdown for electric dryer drum and motor.
Gas Type Drum and Motor Exploded View
Exploded View: Gas Dryer Drum and Motor
Parts breakdown for gas dryer drum and motor.
Need help?
Do you have a question about the DLGX4271 /01 Series and is the answer not in the manual?
Questions and answers