Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Pliers
- Tape measure
Step-by-Step Installation
- Choose Installation Location: Select a location near necessary plumbing and electrical connections on a solid, level floor.
- Remove Shipping Materials: Remove all shipping bolts and packaging materials from the washing machine.
- 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.
- Electrical Connection: Connect to a properly grounded 120V, 60Hz, AC only outlet. Do not use an extension cord.
- Level the Washing Machine: Adjust the leveling legs to ensure the washing machine is level from front to back and side to side.
- Test Run: Run the washing machine through a complete cycle to check for leaks and proper operation.
Specifications
| Model Series | WM3900HWA |
| Type | Front Load Washing Machine |
| Color | White / Graphite Steel |
| Capacity | 4.5 cu. ft. |
| Noise Level (Wash/Spin) | 52 dB / 68 dB |
| Control Type | Touch Controls with LED Display |
| Energy Rating | ENERGY STAR® Certified |
| Water Consumption | 13.5 gallons per cycle |
| Power Requirements | 120V, 60Hz, 15A |
| Dimensions (HxWxD) | 39 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
- Additional Coverage: Optional extended warranty available
For warranty service, contact LG Customer Service at 1-800-243-0000 or visit LG.com
Key Features
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.
ThinQ Technology
Smart connectivity allows remote control and monitoring via smartphone app, with voice control compatibility through Google Assistant and Amazon Alexa.
6 Motion DD Technology
Six different wash motions can be combined to provide the optimal wash for any fabric type, from gentle handling of delicates to powerful cleaning of heavily soiled items.
Steam Technology
Steam technology helps to remove tough stains, reduce allergens, and minimize wrinkles, leaving clothes fresh and hygienically clean.
TurboWash™ 360°
Advanced cleaning system that uses powerful jet sprays and optimized drum rotations to wash a full load in just 30 minutes.
Smart Diagnosis
Automatically diagnoses issues and provides troubleshooting guidance through the ThinQ app, reducing service calls and downtime.
Smart ThinQ Features
Remote Start
Start wash cycles remotely from your smartphone or voice assistant
Cycle Monitoring
Monitor cycle progress and receive completion alerts on your phone
Download Cycles
Download additional wash cycles and settings from the LG server
Energy Monitoring
Track energy and water usage through the ThinQ app
Usage Reports
Receive monthly usage reports and maintenance reminders
Voice Control
Control basic functions through Google Assistant or Amazon Alexa
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Washing machine won't start | Power issue, door not closed properly | Check power supply, ensure door is latched completely |
| Poor cleaning results | Overloading, wrong detergent, incorrect program | Reduce load size, use correct detergent, select appropriate program |
| 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 |
| Wi-Fi connection issues | Network problems, incorrect setup | Check network connection, re-run ThinQ setup process |
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: ThinQ connection error - Check network and restart setup
Manual Downloads
Current Model Manuals
WM3900HWA
4.5 cu.ft. ThinQ Washer
WM4000HBA
4.5 cu.ft. Steam Washer
WM4200HWA
4.8 cu.ft. ThinQ Washer
WM3900HCA
4.5 cu.ft. Graphite Washer
Popular Previous Models
WM3470HVA
4.5 cu.ft. DD Washer
WM3700HWA
4.5 cu.ft. Steam Washer
WM3170CW
4.5 cu.ft. ThinQ Washer
WM3080CW
4.2 cu.ft. DD Washer