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, brackets and packaging materials from the unit.
- Connect Water Supply: Connect hot and cold water supply lines to the water inlet valves. Use only new, high-quality hoses.
- Install Vent System: Connect the dryer vent duct ensuring proper exhaust ventilation with minimal bends.
- Connect Drain Hose: Route the drain hose into a standpipe or laundry tub with a high loop to prevent backflow.
- Electrical Connection: Connect to a properly grounded 240V, 60Hz, dedicated circuit. Do not use an extension cord.
- Level the Unit: Adjust the leveling legs to ensure the machine is perfectly level from front to back and side to side.
- Test Run: Run both wash and dry cycles to check for leaks, proper operation, and ventilation.
Specifications
| Model Series | WM3997HWA |
| Type | 2-in-1 Washer Dryer Combo |
| Color | Stainless Steel / White |
| Wash Capacity | 4.5 cu. ft. |
| Dry Capacity | 3.4 cu. ft. |
| Noise Level (Wash/Dry) | 55 dB / 65 dB |
| Control Type | Touch Controls with LCD Display |
| Energy Rating | ENERGY STAR® Certified |
| Water Consumption | 12.5 gallons per cycle |
| Power Requirements | 240V, 60Hz, 30A dedicated circuit |
| Dimensions (HxWxD) | 74 x 27 x 30 inches |
| Weight | 185 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: 5 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, saving space 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, reducing noise and vibration while increasing reliability and efficiency.
Sensor Dry System
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.
TurboWash™ & TurboDry™
Advanced technologies that save time without compromising performance, completing full cycles in significantly less time.
Smart Cycle Options
Wash+Dry
Complete laundry cycle from dirty to dry in one continuous operation
Wash Only
Standard washing cycles for all fabric types
Dry Only
Drying cycles for previously washed items
Steam Refresh
Quick steam cycle to reduce wrinkles and odors
Allergen Cycle
Special cycle with steam to reduce allergens
Quick Wash+Dry
Express cycle for small loads in under an hour
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit won't start | Power issue, door not closed properly, cycle not selected | Check power supply, ensure door is latched, select cycle |
| Clothes not drying properly | Overloading, lint filter clogged, vent blocked | Reduce load size, clean lint filter, check vent system |
| Water not draining | Drain hose clogged or kinked, pump filter blocked | Check drain hose, clean pump 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, vent obstruction | Check for foreign objects, redistribute load, check vent |
| Error code displayed | Various system issues detected | Refer to error code list 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 vent system, contact service
Manual Downloads
Current Model Manuals
WM3997HWA
4.5 cu. ft. ThinQ 2-in-1
WM3900HWA
4.5 cu. ft. Steam Combo
WM3488HW
2.3 cu. ft. Compact Combo
WM4000HWA
4.8 cu. ft. Large Capacity
Popular Previous Models
WM3998HBA
4.5 cu. ft. Black Combo
WM3477HWA
2.3 cu. ft. White Combo
WM3888HWA
4.0 cu. ft. Standard Combo
WM3455HW
2.3 cu. ft. Basic Combo