Table of Contents
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WASHING MACHINE
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
MODELS : WM3270C*, WM3085C*, WM3270C*/01, WM3275C*/01
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.
WM3180CW
CONFIDENTIAL
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Table of Contents
Troubleshooting
Related Manuals for LG WM3270C 01 Series
Summarization of Contents
2. FEATURES & TECHNICAL EXPLANATION
2-1. FEATURES
Explains key features like Ultra Capacity, Direct Drive System, Tilted Drum, Load Detection, Child Lock, Smart Diagnosis, and NFC.
2-2. NEURO FUZZY WASHING TIME OPTIMIZATION
Describes how water temp, selected temp, and load size determine washing time for optimal performance.
2-3. WATER LEVEL CONTROL
Explains how a pressure sensor controls water level by stopping supply at a preset level.
2-4. DOOR CONTROL
Details how the door opens, locks, and unlocks, including behavior during power failure.
2-5. THE DOOR CAN NOT BE OPENED
Lists conditions under which the door cannot be opened during operation or pause.
2-6. CHILD LOCK
Explains how to use the child lock to prevent unintended operation and how to deactivate it.
2-7. NFC (Tag On Function)
Details how to use the NFC Tag On function with a smartphone for features like Cycle Download.
3. PARTS IDENTIFICATION
Parts and Accessories
Identifies various parts and accessories of the washing machine, including included and optional items.
4. INSTALLATION & TEST
STANDARD INSTALLATION
Outlines the standard installation procedure: removing shipping bolts, placing on a flat surface, and adjusting leveling feet.
HOW TO CONNECT THE INLET HOSE
Guides on connecting the inlet hose correctly to prevent leaks and ensure proper water temperature.
CONNECT THE DRAIN HOSE
Instructions for connecting the drain hose, emphasizing no twisting and avoiding submerging the end.
CONNECT POWER PLUG
Details on connecting the power plug to the wall outlet and avoiding overloading circuits.
5. OPERATION
5-1. CONTROL PANEL FEATURES
Details the functions and layout of the washing machine's control panel and buttons.
Option Button
Explains the functions of various option buttons like Pre Wash, Delay Wash, Cold Wash, Extra Rinse, Child Lock, etc.
Wash Temp., Spin speed, Soil Level, Signal Button
Describes how to select temperature, spin speed, soil level, and signal volume.
5-2. Cycle Guide
Provides a guide to washing cycles, recommended fabric types, and available basic and additional options.
5-3. SPECIAL FUNCTIONS
Details special functions like Child Lock, Load Size, Tub Clean, and Signal ON/OFF.
5-4. Explanation of each process
Explains each step of the washing process, from Stay to End, including Water Supply, Heating, Washing, Drainage, and Untangling.
6. TEST MODE
6-1. SAFETY CAUTION
Provides safety warnings related to electrical shock and handling PWB assemblies during testing.
6-2. LOAD TEST MODE
Details how to enter and operate the Load Test Mode to check various functions.
6-3. HOW TO CHECK THE WATER LEVEL FFREQUENCY
Explains how to check water level frequency using specific button combinations.
7. TROUBLESHOOTING
7-1. SAFETY CAUTION
Repeats safety warnings for troubleshooting, emphasizing electrical hazards.
7-2. ERROR MODE SUMMARY
Summarizes common error codes, their symptoms, and potential causes for the washing machine.
7-3. TROUBLESHOOTING WITH ERROR
Provides detailed troubleshooting steps for specific error codes like Inlet Valve Error.
DRAIN ERROR
Guides troubleshooting for the Drain Error code, including checking pump, connectors, and voltage.
LOCKED MOTOR ERROR
Details troubleshooting steps for the Locked Motor Error, checking connectors, rotor, stator, and IPM.
DOOR OPEN ERROR
Outlines troubleshooting for the Door Open Error, checking connectors, springs, and the door switch assembly.
UNBALANCE ERROR
Provides troubleshooting for Unbalance Error, checking load distribution and machine leveling.
OVER FLOW ERROR
Guides troubleshooting for Overflow Error, checking air chamber, tube, and inlet valve operation.
PRESSURE SENSOR ERROR
Details troubleshooting for Pressure Sensor Error, checking connectors, resistance, and air chamber.
7-5. Before using the Tag On function
Explains how to use the Tag On function with a smartphone for appliance communication and features.
TROUBLESHOOTING ELSE
NO POWER
Guides troubleshooting for no power issues, checking voltage, fuses, and circuit breakers.
BUTTON DOESN'T WORK
Outlines troubleshooting for buttons not working, checking connectors and the display PCB.
VIBRATION & NOISE IN SPIN
Transit Bolts and Floor Stability
Checks if transit bolts are removed and if the washer is installed on a stable floor.
Washer Leveling
Details how to check and adjust the washer's leveling feet for stability.
DETERGENT DOES NOT FLOW IN
Detergent Flow Troubleshooting
Guides on checking water supply, connections, dispenser loading, and detergent condition.
LIQUID DETERGENT/SOFTENER/ BLEACH DOES NOT FLOW IN
Liquid Detergent/Softener/Bleach Flow Check
Details checks for water supply, plug connections, compartment loading, and cap clogging.
ABNORMAL SOUND
Motor Bolt Looseness
Checks if the motor bolt is loose and suggests securing it.
Motor Friction Noise
Guides on checking for motor friction noise, including hall sensor, stator, and rotor inspection.
8. COMPONENT TESTING INFORMATION
8-1. FILTER ASSEMBLY (LINE FILTER)
Describes the wiring diagram and test points for the line filter assembly.
8-2. DOOR LOCK SWITCH ASSEMBLY
Explains the function and operation of the door lock switch assembly.
8-3. STATOR ASSEMBLY
Details the stator assembly function, wiring, and winding resistance test points.
8-4. PUMP MOTOR ASSEMBLY
Describes the pump motor assembly, its function, and resistance test points.
8-5. INLET VALVE ASSEMBLY
Explains the inlet valve assembly function and resistance test points.
8-6. THERMISTOR ASSEMBLY
Describes the thermistor assembly, its function, and test points.
9. DISASSEMBLY INSTRUCTIONS
CONTROL PANEL
Provides step-by-step instructions for disassembling the control panel and its components.
MAIN PWB ASSEMBLY
Details the steps for disassembling the main PWB assembly, including disconnection and removal.
DISPENSER ASSEMBLY
Outlines the procedure for disassembling the dispenser assembly and its connectors.
NOISE FILTER
Provides instructions for disassembling the noise filter.
CABINET COVER
Details the steps for disassembling the cabinet cover, including screw removal and prying.
DOOR
Explains how to disassemble the washing machine door, including hinge screws.
DOOR LOCK SWITCH ASSEMBLY
Details the process of disassembling the door lock switch assembly.
PUMP
Provides instructions for disassembling the pump assembly, including hoses and bellows.
WHEN FOREIGN OBJECT IS STUCK BETWEEN DRUM AND TUB
Guides on removing foreign objects stuck between the drum and tub, involving heater and cabinet disassembly.
LAMP ASSEMBLY
Details the disassembly of the lamp assembly, including top plate and connector removal.
MOTOR/DAMPER
Explains how to disassemble the motor/damper, including rotor, stator, and damper hinges.
10. EXPLODED VIEW
10-1. CABINET & CONTROLPANEL ASSEMBLY
Shows an exploded view of the cabinet and control panel assembly with part numbers.
10-2 DRUM & TUB ASSEMBLY
Presents an exploded view of the drum and tub assembly, detailing various components.
10-3. DISPENSER ASSEMBLY
Displays an exploded view of the dispenser assembly, showing its parts and connections.
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