Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Pliers
- Tape measure
- Stacking kit (included)
Step-by-Step Installation
- Choose Installation Location: Select a location near necessary plumbing and electrical connections on a solid, level floor with adequate ventilation.
- Remove Shipping Materials: Remove all shipping bolts and packaging materials from both washer and dryer units.
- Stacking Preparation: Install the stacking kit according to the included instructions to securely join the washer and dryer.
- Connect Water Supply: Connect hot and cold water supply lines to the washer's water inlet valves. Use only new hoses.
- Connect Drain Hose: Route the drain hose into a standpipe or laundry tub with a high loop to prevent backflow.
- Electrical Connection: Connect washer to 120V outlet and dryer to 240V outlet. Both must be properly grounded. Do not use extension cords.
- Level the Tower: Adjust the leveling legs to ensure the entire tower is 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 | WM4000HWA + DLEX4000W |
| Type | Stacked Washer & Dryer Combo |
| Color | White / Graphite Steel |
| Washer Capacity | 4.5 cu. ft. |
| Dryer Capacity | 7.4 cu. ft. |
| Noise Level (Washer) | 52 dB / 68 dB |
| Control Type | Touch Controls with LCD Display |
| Energy Rating | ENERGY STAR® Certified |
| Water Consumption | 8,200 L/year |
| Power Requirements | Washer: 120V, Dryer: 240V |
| Dimensions (HxWxD) | 145 x 27 x 32 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
- Additional Coverage: Optional extended warranty available
For warranty service, contact LG Customer Service at 1-800-243-0000 or visit LG.com
Key Features
ThinQ Technology
Smart connectivity allows remote control and monitoring via smartphone app, with cycle status updates and diagnostic capabilities.
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.
TurboSteam™ Technology
Steam technology in both washer and dryer helps remove tough stains, reduce allergens, and refresh clothes without washing.
Sensor Dry System
Advanced moisture sensors automatically detect when clothes are dry and adjust drying time accordingly, preventing over-drying.
Stackable Design
Space-saving vertical design perfect for apartments, condos, and small laundry rooms while providing full-size capacity.
Allergiene™ Cycle
Special cycle uses steam to remove over 95% of common household allergens like dust mites and pet dander.
Smart ThinQ Features
Remote Start
Start cycles remotely from your smartphone or voice assistant
Cycle Monitoring
Receive notifications when cycles are complete
Diagnostic Alerts
Get maintenance reminders and troubleshooting guidance
Software Updates
Automatic updates with new features and improvements
Energy Monitoring
Track energy and water usage through the app
Custom Cycles
Download and create custom wash and dry cycles
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Units won't start | Power issue, door not closed properly | Check power supply, ensure both doors are latched completely |
| Poor drying results | Lint filter clogged, overloading, incorrect settings | Clean lint filter, reduce load size, select appropriate dry cycle |
| Water not draining | Drain hose clogged or kinked | Check drain hose for obstructions or kinks, clean filter |
| Excessive vibration | Unbalanced load, uneven floor, stacking kit loose | Redistribute load, level the tower, check stacking kit connections |
| Wi-Fi connection issues | Network problems, incorrect setup | Check network connection, re-run ThinQ setup process |
| Error codes displayed | Various system issues | Refer to error code section below for specific solutions |
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
- PF: Power failure - Reset unit and restart cycle
Manual Downloads
Current Model Manuals
WM4000HWA
4.5 cu. ft. ThinQ Washer
DLEX4000W
7.4 cu. ft. ThinQ Dryer
STACKKIT4000
Stacking Kit Manual
THINQAPP
ThinQ App Guide
Popular Tower Models
WM3900HWA
4.2 cu. ft. Washer Tower
WM3700HWA
4.0 cu. ft. Washer Tower
WM3488HW
Stack Laundry Center
WM3500CW
Compact Washer Tower