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LG WD-10120FD - User Manual

LG WD-10120FD
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100
WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE
CORRECTLY BEFORE OFFERING SERVICE.
MODEL : WD-10120(5)FD
WD-10121(6)FD
WD-12120(5)FD
WD-12121(6)FD
WD-14120(5)FD
WD-14121(6)FD
WD-16120(5)FD
WD-16121(6)FD
FWD-12120(5)FD
FWD-14120(5)FD
FWD-16120(5)FD
DWD-12120(5)FD
DWD-14120(5)FD
DWD-16120(5)FD
CAUTION
website : http://www.LGEservice.com
e-mail : http://LGEservice.com/techsup.html

Questions and Answers

  • G
    Garrett GallagherAug 12, 2025
    Why does my LG Washer show an imbalance error?
    • G
      Gregory HinesAug 12, 2025
      An imbalance error on your LG Washer can occur for several reasons: the load is too small, the appliance isn't level, laundry is bunched to one side, or non-distributable items are in the drum. Check these potential causes to resolve the issue.
  • M
    Micheal PerezAug 16, 2025
    What causes a drain error on an LG WD-10120FD?
    • S
      Stephanie TuckerAug 16, 2025
      A drain error on your LG washer means that water hasn't drained sufficiently within 10 minutes. Check the drain hose for any clogs or kinks that may be preventing proper drainage.
  • J
    Jonathan ReyesAug 19, 2025
    What causes a lock error on my LG WD-10120FD Washer?
    • D
      Darren MitchellAug 19, 2025
      A lock error on your LG Washer can stem from several connection issues or a defective hall sensor. Here are potential causes and solutions: 1. The LEAD WIRE ASSEMBLY connector isn't connected to the STATOR ASSEMBLY connector: Reconnect or repair the connector. 2. Poor electrical contact between connectors in the LEAD WIRE ASSEMBLY and MAIN PWB ASSEMBLY: Reconnect or repair the contact in the connector. 3. The LEAD WIRE ASSEMBLY is cut: Repair the damaged LEAD WIRE ASSEMBLY. 4. The hall sensor is defective: Replace the STATOR ASSEMBLY.
  • V
    vmartinAug 23, 2025
    What to do if my LG WD-10120FD shows a door open error?
    • J
      Jeffrey JacksonAug 23, 2025
      A 'door open error' on your LG washer indicates that the Start/Pause button was pressed while the door was open or that the door switch is malfunctioning. Ensure the door is properly closed before starting the cycle. If the issue persists, the door switch may be faulty.
  • P
    Patricia WilsonAug 27, 2025
    Why is my LG WD-10120FD Washer showing an overflow error?
    • C
      Christopher AndersonAug 27, 2025
      An overflow error on your LG washer occurs when too much water enters the tub, triggering an automatic pump-out. This indicates an issue with the water level control.
  • K
    Katelyn DanielAug 31, 2025
    What does a current error mean on my LG Washer?
    • D
      Danielle GomezAug 31, 2025
      A current error on your LG Washer can be due to two reasons. It could be a faulty MAIN PWB ASSEMBLY, in which case you should replace it. Alternatively, the winding in the STATOR ASSEMBLY might be short-circuited, requiring replacement of the STATOR ASSEMBLY.
  • D
    delgadoheatherSep 3, 2025
    What does a heating error mean on my LG Washer?
    • C
      Cody HollowaySep 3, 2025
      A heating error on your LG washer indicates that the THERMISTOR is out of order. This component is responsible for monitoring and regulating the water temperature during the wash cycle.
  • L
    laura14Sep 7, 2025
    What does sensor pressure S/W error mean on LG WD-10120FD Washer?
    • A
      Abigail TurnerSep 7, 2025
      A 'sensor pressure S/W error' on your LG washer indicates that the sensor pressure switch is malfunctioning. This switch is responsible for monitoring the water pressure inside the washer.

Summary

Specification

Features and Technical Explanation

2-1. Features

Highlights key features like Jumbo drum, Intelligent Wash System, Direct Drive, Child-Lock, low noise, and auto restart.

2-2. Determine Washing Time by Fuzzy Logic

Explains how fuzzy logic determines washing time based on water temperature and laundry amount.

2-3. Water Level Control

Details the use of a pressure sensor for controlling the water level in the tub.

2-4. The Door Can Not Be Opened

States that the door cannot be opened while the program is operating.

Parts Identification

Installation

How to Connect Inlet Hose

Guides on properly connecting the water inlet hose to prevent leaks.

Connect Drain Hose

Instructions for correctly connecting the drain hose, avoiding submerging the end.

Connect Power Plug

Details on how to safely connect the power plug to the wall outlet.

Operation

Child Lock

Describes how to set and cancel the child lock feature on the control panel.

Delay Finish

Explains how to set a delayed start time for washing programs.

LED Display

Explains the function of the LED display for time and error indications.

Power and Time Options

Details the ON/OFF button and Time Save option for managing operation.

Manual Operation Controls

Explains manual selection of wash, rinse, spin, and water temperature.

Wiring Diagram; Program Chart

Troubleshooting

7-1. Before Performing Service

General safety precautions and checks before starting troubleshooting.

7-2. QC Test Mode

Explains how to enter and use the Quality Control (QC) test mode.

7-3. How to Know the Water Level Frequency

Details how to check water level frequency using specific button combinations.

7-4. Error Display

Lists common error codes, their symptoms, and potential causes.

Error Diagnosis and Check List

8-1. Diagnosis and Answer for Abnormal Operation

Provides a diagnostic flowchart for common abnormal operations like no power or water inlet issues.

Door Open Error

Guides troubleshooting for the door open error, checking button presses and door switch.

Drain Trouble

Provides troubleshooting steps for drain issues, checking filters and hoses.

Suds Overflow

Addresses suds overflow issues, recommending low-sudsing detergent and correct amounts.

No Effect of Softener

Troubleshoots issues with the softener not being dispensed correctly.

8-2. Fault Diagnosis and Troubleshooting

Detailed fault diagnosis and troubleshooting steps for various issues like no power or water supply.

No Water Supply

Guides troubleshooting for no water supply, checking taps, filters, and inlet valve.

Detergent Does Not Flow In

Troubleshoots issues where detergent is not dispensed, checking supply and drawer.

Softener Does Not Flow In

Troubleshoots softener dispensing issues, checking supply, connections, and cap.

Abnormal Sound

Guides on diagnosing and fixing abnormal sounds from the washing machine motor.

Heating Without Water

Diagnoses heating issues that occur without water, checking pressure switch and voltage.

Drain Malfunctioning

Troubleshoots drain malfunctions, checking hoses, impellers, connectors, and coils.

Wash Heater Trouble

Diagnoses wash heater problems, checking voltage and resistance of components.

Heating Continuously Above the Setting Water Temperature

Addresses continuous heating issues, checking thermistor resistance and mounting.

Spin Trouble

Troubleshoots spin cycle problems, checking frequency, speed, connectors, and motor resistance.

Disassembly Instructions

Control Panel Assembly

Step-by-step guide for removing and disassembling the control panel assembly.

Dispenser Assembly

Instructions for disassembling the detergent dispenser assembly.

Inlet Valve Assembly

Details on how to disassemble and disconnect the inlet valve assembly.

Main PWB Assembly

Steps for removing the main Printed Wiring Board (PWB) assembly.

Lower Cover

Instructions for removing the lower cover of the washing machine.

Door Assembly

Guides on how to remove and disassemble the door assembly.

Gasket

Instructions for removing and reassembling the door gasket and related covers.

Rotor Assembly, Stator Assembly, Friction Damper Assembly

Steps for disassembling the rotor, stator, and friction damper assemblies.

Clean the Drain Pump Filter

Instructions on how to clean the drain pump filter.

Drain Pump Assembly

Guides on removing the drain pump assembly.

Heater Assembly

Instructions for removing the heater assembly.

Thermistor

Steps for removing and mounting the thermistor.

Switch Assembly, Door Lock

Details on how to disassemble the switch assembly and door lock.

When Foreign Material is Stuck Between Drum and Tub

Instructions for removing foreign material stuck between the drum and tub.

Exploded View and Part List

10-1. The Part List of Cabinet Assembly

Exploded view and part list for the cabinet assembly.

10-2 The Exploded View of Control Panel & Dispenser Assembly

Exploded view and part list for the control panel and dispenser assembly.

10-3 The Exploded View of Drum & Tub Assembly

Exploded view and part list for the drum and tub assembly.

LG WD-10120FD Specifications

General IconGeneral
Loading TypeFront Loading
Capacity6 kg
Washing Capacity6 kg
Spin Speed1200 RPM
Energy RatingA
Water Consumption49 L
ColorWhite
Inverter MotorNo
Smart DiagnosisNo
Child LockYes
Delay StartYes
ProgramsCotton, Synthetic, Delicate, Hand Wash, Rinse & Spin
TypeFront Load Washer

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