Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Pliers
- Tape measure
- Steam hose connector
Step-by-Step Installation
- Choose Installation Location: Select a location near necessary plumbing and electrical connections on a solid, level floor with steam vent access.
- Remove Shipping Materials: Remove all shipping bolts and packaging materials from the steam washer.
- Connect Water Supply: Connect hot and cold water supply lines to the water inlet valves. Use only new hoses.
- Connect Steam System: Install steam hose connection according to manufacturer specifications.
- Connect Drain Hose: Route the drain hose into a standpipe or laundry tub with a high loop to prevent backflow.
- Electrical Connection: Connect to a properly grounded 120V, 60Hz, AC only outlet. Do not use an extension cord.
- Level the Steam Washer: Adjust the leveling legs to ensure the washing machine is level from front to back and side to side.
- Test Steam Function: Run the steam washer through a steam cycle to check for proper steam generation and operation.
Specifications
| Model Series | WM3900HWA |
| Type | Front Load Steam Washer |
| Color | Stainless Steel / White |
| Capacity | 4.5 cu. ft. |
| Noise Level (Wash/Spin) | 52 dB / 68 dB |
| Control Type | Touch Controls with LED Display |
| Energy Rating | ENERGY STAR® Certified |
| Water Consumption | 13 gallons per cycle |
| Steam Technology | TrueSteam™ Technology |
| Power Requirements | 120V, 60Hz, 15A |
| Dimensions (HxWxD) | 39 x 27 x 30 inches |
| Weight | 185 lbs |
| Max Spin Speed | 1300 RPM |
Warranty Information
- Full Warranty: 1 year parts and labor
- Steam System Warranty: 5 years on steam generator
- Motor Warranty: 10 years on Direct Drive Motor
- Additional Coverage: Optional extended warranty available
For warranty service, contact LG Customer Service at 1-800-243-0000 or visit LG.com
Key Features
TrueSteam™ Technology
Advanced steam technology uses real steam to remove tough stains, reduce allergens, and refresh clothes without washing, saving time and energy.
Direct Drive Motor
LG's innovative Direct Drive motor connects directly to the drum without belts or pulleys, reducing noise and vibration while increasing reliability.
Allergen Cycle
Steam technology combined with hot water helps eliminate up to 95% of common household allergens like dust mites and pet dander.
SteamRefresh™ Cycle
Refresh wrinkled clothes and remove odors in about 20 minutes without using water, perfect for garments that don't need full washing.
SmartThinQ Technology
Wi-Fi enabled for remote control via smartphone app, allowing you to monitor cycle status, download additional programs, and receive completion alerts.
TurboWash™ 360°
This feature saves time without compromising cleaning performance, washing a full load in just 30 minutes using powerful jet sprays and optimized drum rotations.
Steam Programs Explained
Steam Sanitary
Uses steam to eliminate 99.9% of bacteria and allergens from clothing and bedding
Steam Refresh
Removes wrinkles and odors from lightly worn clothes without washing
Steam Allergy
Reduces allergens like dust mites and pet dander from fabrics
Steam Softener
Uses steam to naturally soften fabrics without chemical softeners
Steam Quick Wash
Combines steam with quick wash cycle for fast, effective cleaning
Steam Heavy Duty
Intensive steam cleaning for heavily soiled items and tough stains
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Steam function not working | Water supply issue, steam generator fault | Check water supply, ensure steam settings are selected |
| Poor steam cleaning results | Low water pressure, incorrect program selection | Check water pressure, select appropriate steam program |
| Water not heating for steam | Heating element issue, thermostat failure | Contact authorized service technician |
| Steam leakage | Door seal issue, steam hose connection | Check door seal and steam hose connections |
| Unusual steam odors | Mineral buildup, first-time use | Run cleaning cycle, use distilled water if hard water area |
| Steam cycle taking too long | Water temperature issue, load size | Check hot water supply, reduce load size |
Error Codes
- SE: Steam error - Check water supply and steam system
- IE: Water supply issue - Check water supply and inlet valve
- OE: Drain issue - Check drain hose and pump
- FE: Flooding detected - Check for leaks and water supply
- HE: Heating element issue - Contact service center
- dE: Door not closed properly - Ensure door is fully closed
- UE: Unbalanced load - Redistribute clothes and restart
Manual Downloads
Current Steam Washer Models
WM3900HWA
4.5 cu.ft. Smart Steam Washer
WM4000HBA
4.5 cu.ft. Steam Washer with TurboWash
WM4200HWA
4.8 cu.ft. Smart Steam Washer
WM4500HBA
5.0 cu.ft. Large Capacity Steam Washer
Popular Previous Steam Models
WM3470HVA
4.5 cu.ft. Steam Washer
WM3670HWA
4.5 cu.ft. Smart Steam Washer
WM3885HWA
4.5 cu.ft. Steam Washer with ThinQ
WM3170CW
4.3 cu.ft. Compact Steam Washer