Disassembly Guide
Required Tools:
- Torx screwdriver set (T10-T25)
- Phillips screwdrivers (#1, #2)
- Flathead screwdriver
- Nut drivers (7mm, 8mm, 10mm)
- Multimeter
- Panel removal tools
Step-by-Step Disassembly
- Safety First: Disconnect power supply and water connections before beginning any service procedures.
- Top Panel Removal: Remove rear screws and slide top panel backward to release from front clips.
- Control Panel Access: Remove mounting screws and carefully disconnect wiring harnesses from control board.
- Front Panel Removal: Remove lower kick panel, then detach front panel by releasing spring clips and disconnecting door switch.
- Door Assembly Access: Remove door hinge covers and detach door assembly for service access.
- Drum Removal: Remove counterweight, drive pulley, and motor connections to access drum assembly.
- Direct Drive Motor Access: Detach motor mounting bolts and carefully remove motor assembly for inspection or replacement.
Component Specifications
| Direct Drive Motor | BLDC Inverter Motor, 230V, 3-Phase |
| Motor Controller | IPM Module with Overcurrent Protection |
| Main Control Board | 32-bit Microprocessor with EEPROM |
| Door Lock Mechanism | Electronic Interlock with Thermal Fuse |
| Water Inlet Valves | Solenoid Type, 24V DC Operation |
| Drain Pump | Centrifugal Pump, 220-240V AC |
| Pressure Switch | Diaphragm Type, 3-Level Detection |
| Temperature Sensor | NTC Thermistor, 10kΩ at 25°C |
| Tachometer Sensor | Hall Effect Sensor, 12 Pulses/Revolution |
| Heater Element | Stainless Steel, 1800W, 230V |
Replacement Parts Information
- Direct Drive Motor Assembly: Part # 6321EL2001A
- Main Control Board: Part # 6871EC2002T
- Door Lock Assembly: Part # 4681EA2001N
- Drain Pump Assembly: Part # 3870EW1001B
- Water Inlet Valve: Part # 3901ER1003A
For genuine LG replacement parts, contact LG Parts Distribution at 1-800-243-0000 or visit LG Service Parts Portal
Diagnostic Procedures
| Error Code | Description | Diagnostic Procedure |
|---|---|---|
| LE | Motor Lock Error | Check motor wiring, measure phase resistance (2.5-3.5Ω), verify hall sensor operation |
| FE | Motor Drive Error | Inspect IPM module, check DC bus voltage (300-400V), verify motor controller communication |
| TE | Temperature Sensor Error | Measure NTC resistance (10kΩ at 25°C), check wiring continuity, verify sensor calibration |
| PE | Pressure Sensor Error | Test pressure switch operation, check air tube for blockages, verify water level detection |
| DE | Door Lock Error | Test door lock continuity, verify thermal fuse integrity, check interlock mechanism |
| HE | Heater Error | Measure heater resistance (25-35Ω), check thermal cutout, verify relay operation |
Advanced Diagnostics
Motor Phase Testing
Measure resistance between motor phases (U-V, V-W, W-U). All readings should be equal (2.5-3.5Ω). Any imbalance indicates motor winding issues.
Hall Sensor Verification
Check hall sensor output voltages (A, B, C) while manually rotating drum. Each sensor should produce 0-5V square wave signals.
Control Board Diagnostics
Use service mode (Hold Temp + Spin buttons) to access diagnostic menu. Check sensor readings, actuator tests, and error log history.
Repair Instructions
Direct Drive Motor Replacement
Complete step-by-step procedure for motor replacement including torque specifications (12-15 Nm for mounting bolts) and alignment verification procedures.
Drum Bearing Service
Detailed instructions for rear bearing replacement including special tool requirements, seal installation, and runout verification after reassembly.
Control Board Programming
Programming procedures for replacement control boards including software updates, calibration routines, and model-specific configuration settings.
Door Seal Replacement
Procedure for front door seal replacement including spring clip removal, new seal installation, and leak testing verification.
Drain Pump Service
Complete drain pump removal and installation guide including impeller inspection, foreign object removal, and flow rate testing.
Heater Element Replacement
Step-by-step heater replacement procedure including thermal cutout testing, element resistance verification, and safety interlock checks.
Torque Specifications
| Motor Mounting Bolts | 12-15 Nm |
| Drum Spider Bolts | 25-30 Nm |
| Counterweight Bolts | 18-22 Nm |
| Shock Absorber Bolts | 15-18 Nm |
| Spring Hanger Bolts | 8-10 Nm |
Technical Downloads
Service Documentation
Direct Drive Service Manual
Complete technical service guide
Wiring Diagrams
Complete electrical schematics
Exploded Views
Parts breakdown diagrams
Firmware Updates
Latest software versions
Technical Bulletins
Service Bulletin #245
Motor Controller Updates
Technical Update #189
Enhanced Diagnostics Procedures
Recall Notice #76
Door Lock Mechanism
Parts Update #332
Revised Part Numbers