Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Pliers
- Tape measure
- Pipe cutter
Step-by-Step Installation
- Choose Installation Location: Select a location with proper ventilation and access to plumbing and electrical connections on a solid, level floor.
- Remove Shipping Materials: Remove all shipping bolts, brackets and packaging materials from both washer and dryer units.
- Connect Water Supply: Connect hot and cold water supply lines to the water inlet valves. Use only new hoses.
- Connect Drain System: Install drain hose with proper high loop configuration to prevent backflow and siphoning.
- Ventilation Setup: Install proper venting system for dryer unit according to local building codes.
- Electrical Connection: Connect to properly grounded 240V outlet for dryer and 120V outlet for washer.
- Stacking Procedure: Carefully stack dryer unit on top of washer using provided stacking kit and brackets.
- Test Run: Run both units through complete cycles to check for leaks, proper operation and ventilation.
Specifications
| Model Series | WM3900HWA / DLE3900W |
| Type | Stacked Washer + Dryer Combo |
| Color | White / Graphite Steel |
| Washer Capacity | 4.5 cu. ft. |
| Dryer Capacity | 7.4 cu. ft. |
| Noise Level (Washer) | 54 dB |
| Control Type | Touch Controls with LCD Display |
| Energy Rating | ENERGY STAR® Certified |
| Water Consumption | 13.5 gallons per cycle |
| Power Requirements | 240V/30A (Dryer), 120V/15A (Washer) |
| Dimensions (HxWxD) | 74.5" x 27" x 32.5" |
| Total Weight | 215 lbs |
| Max Spin Speed | 1300 RPM |
Warranty Information
- Full Warranty: 1 year parts and labor
- Motor Warranty: 10 years on Direct Drive Motor
- Drum Warranty: 10 years on stainless steel drum
- Additional Coverage: Optional extended warranty available
For warranty service, contact LG Customer Service at 1-800-243-0000 or visit LG.com
Key Features
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 and efficiency.
TurboSteam™ Technology
Advanced steam technology in both washer and dryer units helps remove tough stains, reduce allergens, and refresh clothes without 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.
Sensor Dry System
Intelligent moisture sensors automatically detect when clothes are dry and adjust drying time accordingly, preventing over-drying and saving energy.
Compact Design
Space-saving stacked design fits in closets, small laundry rooms, or other tight spaces while providing full-size capacity.
Allergiene™ Cycle
Specialized cycle uses steam to remove over 95% of common household allergens like dust mites and pet dander from fabrics.
Washer Programs
Normal
Standard wash for everyday cotton and mixed fabrics
Heavy Duty
Intensive cleaning for heavily soiled items and sturdy fabrics
Delicates
Gentle cycle for delicate fabrics and hand-washable items
Quick Wash
Fast cycle for lightly soiled items - completes in 30 minutes
Sanitary
High-temperature cycle to eliminate bacteria and germs
Allergiene
Steam cycle to reduce allergens and refresh fabrics
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit won't start | Power issue, door not closed properly, control lock activated | Check power supply, ensure door is latched, check control lock settings |
| Poor cleaning results | Overloading, wrong detergent, incorrect program selection | Reduce load size, use HE detergent, select appropriate program |
| Clothes not drying properly | Lint filter clogged, vent system restricted, overloading | Clean lint filter, check vent system, reduce load size |
| Water leaking | Door not sealed, overfilling, loose connections | Check door seal, ensure proper detergent amount, check connections |
| Unusual noises | Foreign objects in drum, unbalanced load, installation issues | Check for foreign objects, redistribute load, verify proper installation |
| Error codes displayed | Various system faults detected | Refer to error code chart below, contact service if persistent |
Error Codes
- 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
- LE: Motor issue - Contact service center
- dE: Door not closed properly - Ensure door is fully closed
- UE: Unbalanced load - Redistribute clothes and restart
- tE: Temperature sensor error - Contact service center
- PF: Power failure - Unit will resume when power returns
Manual Downloads
Current WashTower Models
WM3900HWA
WashTower Combo - White
WM3900HBA
WashTower Combo - Black
WM4000HWA
WashTower Combo - Graphite
WM4000HBA
WashTower Combo - Black Stainless
Previous WashTower Models
WM3488HW
WashTower - Previous Generation
WM3488HB
WashTower - Black Edition
WM3500CW
Compact WashTower
WM3700HWA
WashTower - Mid Series