Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Pliers
- Tape measure
- Gas line connector (for gas models)
Step-by-Step Installation
- Choose Installation Location: Select a location near necessary plumbing, electrical, and venting connections 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.
- Vent Connection: Install proper venting for dryer function according to local building codes.
- Electrical Connection: Connect to a properly grounded 120V, 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 and proper operation.
Specifications
| Model Series | WM3997HWA |
| Type | Washer Dryer Combo |
| Color | White / Stainless 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 LED Display |
| Energy Rating | ENERGY STAR® Certified |
| Water Consumption | 8,500 L/year |
| Power Requirements | 120V, 60Hz, 15A |
| 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
- 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 for two separate appliances.
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 and efficiency.
Inverter Heat Pump Technology
Energy-efficient heat pump dryer technology uses less energy while providing gentle drying for all fabric types.
Steam Technology
Steam technology helps to remove tough stains, reduce allergens, and minimize wrinkles, leaving clothes fresh and hygienically clean.
SmartThinQ Technology
Wi-Fi enabled for remote control via smartphone app, allowing you to monitor cycle status, download additional programs, and receive completion alerts.
Auto Dose
Automatically dispenses the perfect amount of detergent and fabric softener based on load size and soil level.
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 dry for delicate fabrics
Quick Wash & Dry
Fast cycle for lightly soiled items in under 60 minutes
Sanitary
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 |
| Poor drying results | Overloading, clogged lint filter, venting issues | 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 |
| Clothes still wet after drying cycle | Overloaded, incorrect cycle selection, vent blockage | Reduce load size, select proper cycle, check venting |
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
Manual Downloads
Current Model Manuals
WM3997HWA
4.5 cu. ft. Washer Dryer Combo
WM3900HWA
4.5 cu. ft. Smart Combo
WM4000HWA
4.8 cu. ft. Large Capacity Combo
WM3488HW
2.3 cu. ft. Compact Combo
Popular Previous Models
WM3998HBA
4.5 cu. ft. Black Combo
WM3170CW
4.5 cu. ft. White Combo
WM3455HW
2.3 cu. ft. Stackable Combo
WM2240CW
4.0 cu. ft. Value Combo