Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Pliers
- Tape measure
- Vent duct clamps
Step-by-Step Installation
- Choose Installation Location: Select a location with proper ventilation, near plumbing and electrical connections on a solid, level floor.
- Remove Shipping Materials: Remove all shipping bolts and packaging materials from the combo unit.
- Connect Water Supply: Connect hot and cold water supply lines to the 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.
- Install Venting: Connect the dryer vent duct to the exhaust port and route to outside, ensuring proper clearance.
- Electrical Connection: Connect to a properly grounded 240V, 60Hz, AC only outlet. Do not use an extension cord.
- Level the Combo Unit: Adjust the leveling legs to ensure the unit is level from front to back and side to side.
- Test Run: Run both wash and dry cycles to check for leaks and proper operation.
Specifications
| Model Series | WM3997HWA |
| Type | All-in-One Washer Dryer Combo |
| Color | White / Graphite Steel |
| Wash Capacity | 4.5 cu. ft. |
| Dry Capacity | 4.5 cu. ft. |
| Noise Level (Wash/Dry) | 55 dB / 65 dB |
| Control Type | Touch Controls with LCD Display |
| Energy Rating | ENERGY STAR® Certified |
| Water Consumption | 8,200 L/year |
| Power Requirements | 240V, 60Hz, 30A |
| Dimensions (HxWxD) | 89 x 69 x 75 cm |
| Weight | 85 kg |
| Max Spin Speed | 1300 RPM |
Warranty Information
- Full Warranty: 2 years 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
All-in-One Design
Combines washing and drying functions in a single unit, perfect for small spaces and eliminating the need to transfer laundry between machines.
ThinQ Smart Technology
Wi-Fi enabled for remote control via smartphone app, allowing you to start, monitor, and receive alerts for both wash and dry cycles from anywhere.
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.
Sensor Dry Technology
Automatically senses moisture levels and adjusts drying time accordingly, preventing over-drying and saving energy.
Steam Technology
Steam refresh cycle reduces wrinkles and odors, while steam washing helps remove tough stains and allergens from fabrics.
TurboWash™ & TurboDry™
Advanced technologies that save time without compromising performance, completing full wash and dry cycles in record time.
Smart Features
Remote Start
Start wash and dry cycles remotely using the ThinQ app on your smartphone
Cycle Monitoring
Monitor cycle progress and receive completion alerts on your mobile device
Diagnostics
Smart diagnostics can identify issues and provide troubleshooting guidance
Voice Control
Compatible with Amazon Alexa and Google Assistant for voice commands
Software Updates
Receive automatic software updates with new features and improvements
Energy Monitoring
Track energy and water usage through the ThinQ app
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit won't start | Power issue, door not closed properly | Check power supply, ensure door is latched completely |
| Clothes not drying properly | Vent blockage, overloading, incorrect cycle | Check vent system, reduce load size, select appropriate dry cycle |
| Water not draining | Drain hose clogged or kinked | Check drain hose for obstructions or kinks, clean filter |
| Leaking water | Door not sealed, overfilling, loose connections | Check door seal, ensure proper detergent amount, check connections |
| Unusual noises during drying | Foreign objects in drum, unbalanced load | Check for foreign objects, redistribute load evenly |
| Error codes displayed | Various system issues | Refer to error code section 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
- HE: Heater error - Check venting, contact service if needed
Manual Downloads
Current Model Manuals
WM3997HWA
4.5 cu. ft. ThinQ Combo
WM3900HWA
4.5 cu. ft. Smart Combo
WM4000HWA
4.8 cu. ft. ThinQ Combo
WM3488HW
2.3 cu. ft. Compact Combo
Popular Previous Models
WM3998HBA
4.5 cu. ft. Black Combo
WM3670HWA
4.5 cu. ft. White Combo
WM3455HW
2.3 cu. ft. White Combo
WM3170CW
4.3 cu. ft. Compact Combo