Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Pliers
- Tape measure
- Vent hose clamps
Step-by-Step Installation
- Choose Installation Location: Select a location near plumbing, electrical connections, and proper ventilation on a solid, level floor.
- Remove Shipping Materials: Remove all shipping bolts and packaging materials from the washer dryer 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 Vent System: Connect the dryer vent hose to the exhaust port and route to outdoor ventilation.
- 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 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 adequate ventilation.
Specifications
| Model Series | WM3997HWA |
| Type | Front Load 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 LED Display |
| Energy Rating | ENERGY STAR® Certified |
| Water Consumption | 8,200 L/year |
| Power Requirements | 240V, 60Hz, 30A |
| Dimensions (HxWxD) | 74 x 27 x 32 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: 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, saving space and eliminating the need to transfer laundry between machines.
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 removes wrinkles and odors from clothes, while steam washing helps eliminate allergens and stains.
SmartThinQ Technology
Wi-Fi enabled for remote control via smartphone app, allowing you to monitor cycle status, download programs, and receive alerts.
TurboWash™ & TurboDry™
Accelerated wash and dry cycles that save time without compromising performance, perfect for busy households.
Wash Programs
Normal
Standard wash for everyday cotton and mixed fabrics
Heavy Duty
Intensive cleaning for heavily soiled items and sturdy fabrics
Delicates
Gentle cycle for delicate fabrics and hand-wash items
Quick Wash
Fast cycle for lightly soiled items - wash and dry in under 60 minutes
Sanitary
High-temperature cycle to eliminate bacteria and allergens
Steam Refresh
Steam cycle to remove wrinkles and refresh clothes
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit won't start | Power issue, door not closed properly, child lock engaged | Check power supply, ensure door is latched, disable child lock |
| Clothes not drying properly | Overloading, lint filter clogged, vent system blocked | Reduce load size, clean lint filter, check vent system |
| Water not draining | Drain hose clogged or kinked, pump filter blocked | Check drain hose for obstructions, clean pump filter |
| Leaking water | Door not sealed, overfilling, loose connections | Check door seal, ensure proper detergent amount, check connections |
| Unusual noises | Foreign objects in drum, unbalanced load | Check for foreign objects, redistribute load evenly |
| Excessive vibration | Unbalanced load, uneven floor, shipping bolts not removed | Redistribute load, level the unit, ensure shipping bolts removed |
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. Smart Washer Dryer
WM3900HWA
4.5 cu. ft. Steam Combo
WM4000HBA
4.8 cu. ft. ThinQ Combo
WM3488HW
2.3 cu. ft. Compact Combo
Popular Previous Models
WM3998HBA
4.5 cu. ft. Graphite Combo
WM3170CW
4.5 cu. ft. White Combo
WM3455HW
4.5 cu. ft. Standard Combo
WM2240CW
4.5 cu. ft. Basic Combo