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LG DLEX7177WM - User Manual

LG DLEX7177WM
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U.S.A. Website: http://us.lgservice.com
Canadian Website: http://lg.ca
ELECTRIC & GAS DRYER
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY IN ORDER TO
PROPERLY DIAGNOSE PROBLEMS AND TO SAFELY
PROVIDE QUALITY SERVICE ON THESE DRYERS.
MODEL : DLEX7177WM / DLEX8377WM
DLEX7177RM / DLEX8377NM
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Summary

IMPORTANT SAFETY NOTICE

RECONNECT ALL GROUNDING DEVICES

Instructions for ensuring all grounding devices are reconnected after service.

WHAT TO DO IF YOU SMELL GAS

Safety procedures to follow immediately if a gas leak is detected.

Electrostatic Discharge (ESD) Precautions

Guidelines to prevent damage to electronic components from static electricity.

SPECIFICATIONS

ACCESSORIES

Details available optional accessories like dryer rack, stacking kit, and pedestal.

FEATURES AND BENEFITS

INSTALLATION INSTRUCTIONS

Dryer Rack Installation Instructions

Step-by-step guide for installing the dryer rack inside the drum.

Stacking Kit Installation Instructions

Instructions for securely installing the dryer on top of a washing machine using a stacking kit.

Pedestal Installation Instructions

Guide for mounting the dryer onto an optional pedestal for better ergonomics.

Electrical Connection Options

Explains different methods for connecting the dryer to the home's electrical supply.

Connect Gas Supply Pipe

Procedure for connecting the gas supply pipe to the dryer for gas models.

DRYER CYCLE PROCESS

COMPONENT TESTING INFORMATION

Thermal cut off

Procedure to test the thermal cut-off component for continuity and resistance.

Hi limit Thermostat

Test procedure for the high-limit thermostat to check its activation temperature.

Outlet Thermostat

Testing the outlet thermostat for proper operation at specified temperatures.

Lamp holder

Procedure to measure the resistance of the lamp holder.

Door switch

Test for the door switch to ensure it registers door open/closed states correctly.

Idler switch

Test procedure for the idler switch to check its open/closed resistance.

Heater

Measures the resistance of the heater element for electric dryers.

Thermistor

Checks the resistance of the thermistor at various temperatures.

Motor

Procedures for testing the motor and its associated components.

Gas valve

Tests the gas valve for proper operation and resistance.

Igniter

Measures the resistance of the igniter.

Frame Detect

Test procedure for the frame detection component.

Outlet Thermostat (Auto reset)

Tests auto-reset outlet thermostat open/close points.

Outlet Thermostat (Manual reset)

Tests manual-reset outlet thermostat open/close points.

MOTOR DIAGRAM AND SCHEMATIC

CONTROL LAY-OUT

PWB ASSEMBLY DISPLAY LAYOUT

Diagram showing the layout of the Printed Wiring Board (PWB) display components.

PWB ASSEMBLY LAYOUT

Shows the physical arrangement of components on the main PWB.

WIRING DIAGRAM

ELECTRIC DRYER WIRING DIAGRAM

Detailed wiring diagram specific to electric dryer models.

GAS DRYER WIRING DIAGRAM

Detailed wiring diagram specific to gas dryer models.

DIAGNOSTIC TEST

ACTIVATING THE DIAGNOSTIC TEST MODE

Instructions on how to enter the dryer's diagnostic test mode.

Test 1 120 V AC Electrical Supply

Checks the AC electrical supply voltage and connections to the controller.

Power Connection Checks

Verifies tab relay connections and status for proper power distribution.

Test 2 Thermistor Test

Measures thermistor resistance to diagnose temperature sensing issues.

Test 3 Motor test

Tests the motor's rotation and operation, checking resistance and associated switches.

Test 4 Moisture sensor

Evaluates the moisture sensor's performance and its reading accuracy.

Test 5 Door switch test

Verifies the door switch functionality for sensing door open/closed states.

Test 6 Heater switch test - Electric Type

Tests heater switches and resistance in electric models.

Test 7 GAS Valve test - Gas Type

Diagnoses the gas valve's voltage and resistance for gas models.

Test 8 Semi Conductor

Measures the resistance of the semi-conductor component.

CHANGE GAS SETTING (NATURAL GAS, PROPANE GAS)

STEP 1: VALVE SETTING

Adjusts the gas valve settings for natural gas or propane.

STEP 2: ORIFICE CHANGE

Details the process of replacing the gas orifice for different gas types.

GAS VALVE OPERATION AND STRUCTURE

DISASSEMBLY INSTRUCTIONS

TOP PLATE

Step-by-step guide to remove the dryer's top panel.

PANEL DRAWER ASSEMBLY

Instructions for disassembling the panel drawer and removing the water tank.

CONTROL PANEL ASSEMBLY

Guide for safely removing and disassembling the control panel.

COVER CABINET

Steps to remove the dryer's outer cabinet cover.

GUIDE ASM

Instructions for disassembling the guide assembly, including pump and generator.

FRAME BODY & PANEL FRAME

Details on disassembling the main frame body and panel frame.

TUB DRUM [FRONT]

Procedure to disassemble the front part of the tub drum assembly.

DRUM ASSEMBLY

Instructions for removing the drum from the dryer assembly.

CHANGING THE DRUM LAMP

Steps for replacing the lamp bulb inside the dryer drum.

DRYER EXHAUST CHANGE

Instructions for modifying or replacing the dryer's exhaust duct.

FILTER ASSEMBLY

Steps to remove and access the dryer's filter assembly.

BLOWER HOUSING

Guide to disassembling the blower housing and its components.

BACK COVER

Instructions for removing the rear panel of the dryer.

AIR DUCT

Steps for removing or accessing the dryer's air duct system.

ROLLERS

Procedure to remove the drum rollers.

EXPLODED VIEW

12-1. Control Panel & Plate Assembly

Exploded view diagram of the control panel and associated mounting plate.

12-2. Panel Drawer Assembly & Guide Assembly

Exploded views of the panel drawer and guide assemblies.

12-3. Cabinet & Door Assembly

Exploded diagram showing the dryer's cabinet structure and door components.

12-4-1. Drum & Motor Assembly: Electric Type

Exploded view of the drum and motor assembly for electric models.

LG DLEX7177WM Specifications

General IconGeneral
BrandLG
ModelDLEX7177WM
Fuel TypeElectric
Capacity7.3 cu. ft.
Steam FunctionYes
ColorWhite
Dryer VentingVented
Dryer TechnologySensor Dry
Number of Temperature Settings5
Energy Star CertifiedYes
Width27 in.
Smart FeaturesWi-Fi Connectivity