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 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.
- 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 duct ensuring proper clearance and secure with clamps.
- 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 and proper operation.
Specifications
| Model Series | WM3997HWA |
| Type | Front Load Washer Dryer Combo |
| Color | Graphite Steel / White |
| Capacity (Wash/Dry) | 4.5 cu.ft / 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 28.5 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.
ThinQ Technology
Smart connectivity allows remote control and monitoring via smartphone app, with cycle customization and maintenance alerts.
Direct Drive Motor
LG's innovative Direct Drive motor connects directly to the drum without belts, reducing noise and vibration while increasing reliability.
Sensor Dry System
Automatically detects 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 reduce cycle times while maintaining excellent cleaning and drying performance.
Smart Features
Remote Start
Start cycles remotely using the ThinQ app from anywhere
Cycle Monitoring
Monitor cycle progress and receive completion notifications
Diagnostic Alerts
Receive maintenance alerts and troubleshooting guidance
Voice Control
Compatible with Amazon Alexa and Google Assistant
Software Updates
Automatic updates with new features and improvements
Energy Monitoring
Track energy and water usage through the 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, overloaded, incorrect cycle | Clean 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 | 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 needed |
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 and contact service
Manual Downloads
Current Model Manuals
WM3997HWA
4.5 cu.ft ThinQ Washer Dryer
WM4000HWA
4.5 cu.ft Steam Combo
WM3900HWA
4.5 cu.ft Graphite 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
WM3170CW
2.3 cu.ft White Combo
WM3455HW
4.5 cu.ft Basic Combo