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 and packaging materials from both washer and dryer units.
- Connect Water Supply: Connect hot and cold water supply lines to the washer unit. Use only new hoses.
- Connect Drain System: Install proper drain system for both washer and dryer units with high loops to prevent backflow.
- Electrical Connection: Connect to properly grounded outlets. Washer requires 120V, dryer requires 240V outlet.
- Stack Units: Carefully stack dryer unit on top of washer using provided stacking kit and secure properly.
- Level the WashTower: Adjust the leveling legs to ensure the unit is perfectly level from front to back and side to side.
- Test Run: Run both units through complete cycles to check for leaks and proper operation.
Specifications
| Model Series | WM3900HWA / DLEX3900W |
| Type | Stacked Front Load Washer and Dryer |
| Color | Graphite Steel / White |
| Washer Capacity | 4.5 cu. ft. |
| Dryer Capacity | 7.4 cu. ft. |
| Noise Level | Washer: 52 dB / Dryer: 62 dB |
| Control Type | Touch Controls with LCD Display |
| Energy Rating | ENERGY STAR® Certified |
| Water Consumption | Washer: 13 gallons per load |
| Power Requirements | Washer: 120V / Dryer: 240V |
| Dimensions (HxWxD) | 74.5 x 27 x 31.5 inches |
| 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
Center Control™ Panel
Conveniently located control panel positioned at eye level between washer and dryer for easy access and operation.
TurboWash® 360°
Advanced washing technology that uses multi-directional jets to thoroughly clean clothes in just 30 minutes.
Direct Drive Motor
LG's innovative Direct Drive motor connects directly to the drum without belts, reducing noise and increasing reliability.
Sensor Dry System
Automatically senses moisture levels and adjusts drying time to prevent over-drying and save energy.
SmartThinQ Technology
Wi-Fi enabled for remote control via smartphone app, allowing you to monitor cycles, download programs, and receive alerts.
Compact Design
Space-saving stacked design perfect for apartments, condos, and small laundry rooms without sacrificing capacity.
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-wash items
Quick Wash
Fast 15-minute cycle for lightly soiled items
Bedding
Special cycle for blankets, comforters, and large bedding
Sanitary
High-temperature cycle to eliminate bacteria and allergens
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit won't start | Power issue, door not closed, control lock activated | Check power supply, ensure doors are latched, check control lock |
| Poor cleaning results | Overloading, wrong detergent, incorrect program | Reduce load size, use HE detergent, select appropriate program |
| Clothes not drying properly | Lint filter clogged, overloading, vent system blocked | Clean lint filter, reduce load size, check dryer vent |
| Leaking water | Door not sealed, overfilling, loose connections | Check door seal, ensure proper detergent amount, check connections |
| Unusual noises | Foreign objects in drum, unbalanced load | Check for foreign objects, redistribute load evenly |
| Vibration during operation | Unbalanced load, uneven floor, improper installation | Redistribute load, level the unit, check installation |
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
- tE: Temperature sensor error - Contact service center
- UE: Unbalanced load - Redistribute clothes and restart
Manual Downloads
Current WashTower Models
WM3900HWA
4.5 cu. ft. Washer Unit
DLFX3900W
7.4 cu. ft. Dryer Unit
WM4000HBA
4.5 cu. ft. Black Washer
WM3900HCA
4.5 cu. ft. Graphite Washer
Popular Previous Models
WM3488HW
4.2 cu. ft. Washer Unit
DLFX3888W
7.3 cu. ft. Dryer Unit
WM3477HVA
4.2 cu. ft. Washer
WM3400CW
4.2 cu. ft. White Washer