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 with adequate space for both units and proper ventilation for the dryer.
- Remove Shipping Materials: Remove all shipping bolts and packaging materials from both washer and dryer.
- Install Stacking Kit: Attach the stacking bracket to the washer according to the included instructions.
- Connect Water Supply: Connect hot and cold water supply lines to the washer's water inlet valves.
- Connect Drain System: Route the washer drain hose properly and ensure dryer vent is correctly installed.
- Electrical Connection: Connect both units to properly grounded outlets. Washer: 120V, Dryer: 240V.
- Stack Units: Carefully place dryer on top of washer using the stacking kit for secure attachment.
- Level the System: Adjust leveling legs to ensure the stacked unit is stable and level.
- Test Run: Run both units through complete cycles to check for proper operation.
Specifications
| Model Series | WM4000HWA / DLEX4000W |
| Type | Stackable Front Load Washer and Electric Dryer |
| Color | White |
| Washer Capacity | 4.5 cu. ft. |
| Dryer Capacity | 7.4 cu. ft. |
| Control Type | Touch Controls with LCD Display |
| Energy Rating | ENERGY STAR® Certified |
| Washer Power Requirements | 120V, 60Hz, 15A |
| Dryer Power Requirements | 240V, 60Hz, 30A |
| Stacked Dimensions (HxWxD) | 78 x 27 x 32 inches |
| Weight (Washer/Dryer) | 205 lbs / 125 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
ThinQ Technology
Wi-Fi enabled for remote control via smartphone app, allowing you to monitor cycle status, download additional programs, and receive completion alerts.
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.
Stackable Design
Space-saving vertical design perfect for apartments, condos, and small laundry rooms while maintaining full-size capacity.
Steam Technology
SteamRefresh® cycle in dryer and Steam™ wash in washer help remove wrinkles, reduce allergens, and refresh clothes without washing.
6 Motion DD Technology
Six different wash motions can be combined to provide the optimal wash for any fabric type, from gentle handling to powerful cleaning.
Sensor Dry System
Automatically senses moisture levels and adjusts drying time to prevent over-drying and save energy.
Smart Features
Remote Start
Start cycles remotely using the ThinQ app from anywhere
Cycle Monitoring
Monitor cycle progress and receive alerts when cycles complete
Diagnostics
Smart diagnostics can identify issues and suggest solutions
Software Updates
Receive automatic software updates with new features
Energy Monitoring
Track energy and water usage through the app
Voice Control
Compatible with Amazon Alexa and Google Assistant
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Units won't start | Power issue, door not closed properly | Check power supply, ensure doors are latched completely |
| Vibration in stacked unit | Unbalanced load, stacking kit not secure | Redistribute load, check stacking kit installation |
| Poor drying performance | Lint filter clogged, vent system restricted | Clean lint filter, check dryer vent for obstructions |
| Water not draining | Drain hose clogged or kinked | Check drain hose for obstructions or kinks, clean filter |
| ThinQ app not connecting | Wi-Fi issues, incorrect setup | Check Wi-Fi connection, re-run setup process |
| Unusual noises | Foreign objects in drum, unbalanced load | Check for foreign objects, redistribute load evenly |
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 Stackable Models
WM4000HWA / DLEX4000W
4.5 cu. ft. Stackable Set
WM3900HWA / DLE3900W
Stackable ThinQ Set
WM3400CW / DLEX3400V
Stackable Steam Set
WM3700HVA / DLEX3700V
Graphite Steel Stackable
Popular Previous Models
WM3070CW / DLEC3000W
Stackable Laundry Center
WM2240CW / DLE2100W
Compact Stackable Set
WM3250CW / DLEX3250W
Stackable with Steam
WM3670HWA / DLEX3670W
Large Capacity Stackable