Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Pliers
- Tape measure
- Vent clamps
Step-by-Step Installation
- Choose Installation Location: Select a location near necessary plumbing, electrical connections, and venting on a solid, level floor.
- Remove Shipping Materials: Remove all shipping bolts and packaging materials from the washer dryer 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 hose to the exhaust port and route to exterior vent opening.
- Electrical Connection: Connect to a properly grounded 240V, 60Hz, AC only outlet. Do not use an extension cord.
- Level the Unit: Adjust the leveling legs to ensure the washer dryer combo is level from front to back and side to side.
- Test Run: Run both wash and dry cycles to check for leaks, proper operation, and venting.
Specifications
| Model Series | WM3997HWA |
| Type | Washer Dryer Combo |
| Color | White / Stainless Steel |
| Washer Capacity | 4.5 cu. ft. |
| Dryer Capacity | 7.4 cu. ft. |
| Noise Level (Wash/Spin) | 55 dB / 72 dB |
| Control Type | Touch Controls with LED Display |
| Energy Rating | ENERGY STAR® Certified |
| Water Consumption | 8,200 L/year |
| Power Requirements | 240V, 60Hz, 30A |
| Dimensions (HxWxD) | 74 x 27 x 30 inches |
| Weight | 180 lbs |
| Max Spin Speed | 1300 RPM |
Warranty Information
- Full Warranty: 1 year parts and labor
- Motor Warranty: 10 years on Direct Drive Motor
- Dryer System Warranty: 5 years on dryer components
- 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 providing complete laundry solution in one machine.
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 technology helps to remove tough stains, reduce allergens, and refresh clothes without washing.
SmartThinQ Technology
Wi-Fi enabled for remote control via smartphone app, allowing you to monitor cycle status, download programs, and receive alerts.
TurboWash™
This feature saves time without compromising cleaning performance, washing a full load in just 30 minutes using powerful jet sprays.
Wash and Dry Programs
Normal Wash & Dry
Standard cycle for everyday laundry with automatic drying
Heavy Duty
Intensive cleaning and drying for heavily soiled items
Delicates
Gentle wash and low-heat drying for delicate fabrics
Quick Wash & Dry
Fast cycle for lightly soiled items needing quick turnaround
Sanitary Cycle
High-temperature wash and dry to eliminate bacteria
Wrinkle Care
Reduces wrinkles with steam and gentle tumbling
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 | Overloading, lint filter clogged, vent blocked | Reduce load size, clean lint filter, check venting |
| 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 code displayed | Various system issues | 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: Heating element issue - Check dryer components
Manual Downloads
Current Model Manuals
WM3997HWA
4.5 cu. ft. Washer Dryer Combo
WM3900HWA
4.5 cu. ft. Smart Combo
WM4000HWA
5.0 cu. ft. Large Capacity Combo
WM3488HW
Compact Washer Dryer Combo
Popular Previous Models
WM3455HW
2.3 cu. ft. Compact Combo
WM3070CW
Standard Washer Dryer Combo
WM2240CW
Energy Efficient Combo
WM1640CW
Basic Washer Dryer Combo