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LG FWD-14120FD - User Manual

LG FWD-14120FD
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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

  • N
    Nicole JohnsonAug 13, 2025
    Why does my LG FWD-14120FD show an imbalance error?
    • C
      Charles BradfordAug 13, 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.
  • K
    Kristin ButlerAug 16, 2025
    What causes a drain error on an LG FWD-14120FD Washer?
    • M
      Mrs. Deborah Bradley DDSAug 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.
  • M
    michael16Aug 20, 2025
    What causes a lock error on my LG FWD-14120FD Washer?
    • G
      Gregory GreenAug 20, 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.
  • T
    taylorstevenAug 25, 2025
    What to do if my LG FWD-14120FD Washer shows a door open error?
    • B
      Benjamin GilbertAug 25, 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.
  • M
    Michael SteeleAug 27, 2025
    Why is my LG FWD-14120FD Washer showing an overflow error?
    • Y
      ywardAug 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.
  • J
    Jennifer FieldsAug 31, 2025
    What does a current error mean on my LG FWD-14120FD Washer?
    • K
      Kathleen MorrisAug 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.
  • C
    Christopher ClarkeSep 4, 2025
    What does a heating error mean on my LG FWD-14120FD?
    • K
      katherinerileySep 4, 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.
  • H
    Hannah HarmonSep 8, 2025
    What does sensor pressure S/W error mean on LG FWD-14120FD?
    • T
      thomasdavidSep 8, 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

Washing Machine Service Manual

1. Specification

2. Features and Technical Explanation

2-1. Key Features

Highlights features like Jumbo drum, Intelligent Wash System, and Direct Drive.

2-2. Fuzzy Logic Washing Time Determination

Explains how fuzzy logic optimizes wash time based on sensors.

2-3. Water Level Control System

Details the water level control using a pressure sensor.

2-4. Door Locking Mechanism

Describes why the door cannot be opened during operation.

3. Parts Identification

Included Accessories

Lists and illustrates essential accessories like inlet hose and wrench.

4. Installation Procedures

Standard Installation Steps

Guides on removing transit bolts, appliance placement, and leveling.

Hose and Power Connection

Details connecting the inlet hose, drain hose, and power plug.

Test Operation Guide

5. Operation Details

Control Features Overview

Explains child lock and delay finish functions for user control.

User Interface Elements

Details the Start/Pause button and wash program selector dial.

Additional Options and Display

Covers Time Save, LED display, ON/OFF, options, and temperature selection.

Manual Operation Modes

Describes how to select manual wash, rinse, and spin operations.

6. Wiring Diagram and Program Chart

Wash Program Chart Details

Provides a detailed chart of wash programs, steps, and timings.

7. Troubleshooting Basics

7-1. Before Performing Service

Emphasizes safety precautions and preliminary checks before troubleshooting.

7-2. QC Test Mode Procedures

Details the procedure to enter and use the QC test mode for diagnostics.

7-3. Water Level Frequency Measurement

Explains how to interpret water level frequency readings for troubleshooting.

7-4. Error Display Codes

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

8. Error Diagnosis and Check List

8-1. Diagnosis and Answers for Abnormal Operation

Provides a step-by-step guide to diagnose and resolve common operational issues.

Door Open Error Troubleshooting

Guides on how to resolve the 'Door Open Error' symptom.

Drain Trouble Diagnosis

Provides steps to diagnose and fix drain-related problems.

Suds Overflow Issues

Offers solutions for problems related to excessive suds during operation.

Softener Dispensing Problems

Explains how to address problems with the softener dispenser.

8-2. Fault Diagnosis and Troubleshooting

No Power Troubleshooting

Details troubleshooting steps for a 'No Power' issue.

No Water Supply Diagnosis

Provides troubleshooting guidance for 'No Water Supply' problems.

Detergent Not Flowing In

Guides on fixing issues where detergent is not dispensed correctly.

Softener Not Flowing In

Offers solutions for problems with the softener not flowing into the dispenser.

Abnormal Sound Diagnosis

Details troubleshooting steps for identifying and resolving abnormal noises.

Heating Without Water Troubleshooting

Drain Malfunctioning Diagnosis

Provides troubleshooting steps for drain pump and hose malfunctions.

Wash Heater Trouble Diagnosis

Heating Continuously Above Set Temperature

Guides on resolving issues with continuous heating above the set temperature.

Spin Trouble Diagnosis

9. Disassembly Instructions

Control Panel Assembly Disassembly

Details the steps to disassemble the control panel assembly.

Dispenser Assembly Disassembly

Provides instructions for disassembling the detergent dispenser assembly.

Inlet Valve Assembly Removal

Details the procedure for removing the water inlet valve assembly.

Main PWB Assembly Removal

Explains how to remove the main printed circuit board assembly.

Lower Cover Removal

Describes how to remove the lower cover of the appliance.

Door Assembly Disassembly

Provides instructions for disassembling the door assembly.

Gasket Removal and Reassembly

Details the process of removing and reassembling the door gasket.

Rotor, Stator, and Friction Damper Assembly

Rotor Assembly Removal

Explains how to remove the rotor assembly from the motor.

Stator Assembly Removal

Details the procedure for removing the stator assembly.

Friction Damper Assembly Removal

Provides instructions for removing the friction damper assembly.

Drain Filter Cleaning Procedure

Guides on cleaning the drain pump filter for proper operation.

Drain Pump Assembly Service

Heater Assembly Service

Details how to remove and install the heater assembly.

Thermistor Service

Explains how to remove and mount the thermistor.

Switch Assembly and Door Lock Service

Foreign Material Removal from Drum;Tub

Provides steps to remove foreign material stuck between the drum and tub.

10. Exploded View and Part List

10-1. Cabinet Assembly Parts

Lists and illustrates parts related to the cabinet assembly.

10-2. Control Panel & Dispenser Parts

Illustrates the exploded view of the control panel and dispenser components.

10-3. Drum & Tub Assembly Parts

Shows the exploded view of the drum and tub assembly parts.

LG FWD-14120FD Specifications

General IconGeneral
Drying Capacity8 kg
Spin Speed1400 rpm
Noise Level (Spin)72 dB
Weight80 kg
ColorWhite
Inverter MotorYes
ModelFWD-14120FD
Smart FeaturesNFC
TypeFront Load Washer

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