Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Pipe wrench
- Tape measure
- Drill with bits
Step-by-Step Installation
- Choose Installation Location: Select a location near kitchen plumbing and electrical connections on a solid, level floor.
- Remove Shipping Materials: Remove all shipping bolts and packaging materials from the dishwasher.
- Connect Water Supply: Connect hot water supply line to the water inlet valve. Use only new hoses and ensure proper sealing.
- Connect Drain Hose: Route the drain hose into the sink drain or garbage disposal with a high loop to prevent backflow.
- Electrical Connection: Connect to a properly grounded 120V, 60Hz, AC only outlet. Dedicated circuit recommended.
- Level the Dishwasher: Adjust the leveling legs to ensure the dishwasher is level from front to back and side to side.
- Secure to Countertop: Use mounting brackets to secure the dishwasher to the underside of the countertop.
- Test Run: Run the dishwasher through a complete cycle to check for leaks and proper operation.
Specifications
| Model Series | LDF7551ST |
| Type | Built-in Dishwasher |
| Color | Stainless Steel |
| Place Settings | 15 Place Settings |
| Noise Level | 44 dBA |
| Control Type | Touch Controls with LED Display |
| Energy Rating | ENERGY STAR® Certified |
| Water Consumption | 2.9 Gallons per Cycle |
| Power Requirements | 120V, 60Hz, 15A |
| Dimensions (HxWxD) | 34.5 x 23.8 x 24.5 inches |
| Weight | 105 lbs |
| Drying System | TrueSteam™ Drying |
Warranty Information
- Full Warranty: 1 year parts and labor
- Direct Drive Motor Warranty: 10 years on Direct Drive Motor
- Rack Warranty: 10 years on stainless steel tub and rack
- Additional Coverage: Optional extended warranty available
For warranty service, contact LG Customer Service at 1-800-243-0000 or visit LG.com
Key Features
QuadWash™ Technology
Four multi-directional spray arms target every corner of the dishwasher, ensuring thorough cleaning from multiple angles for spotless results.
Direct Drive Motor
LG's innovative Direct Drive motor connects directly to the wash system without belts or pulleys, reducing noise and increasing reliability and efficiency.
TrueSteam™ Technology
Steam technology helps to remove tough, baked-on foods, sanitize dishes, and provide superior drying performance without heat spots.
LoDecibel™ Operation
Advanced sound insulation and Direct Drive motor technology combine for ultra-quiet operation at only 44 dBA - quieter than normal conversation.
SmartThinQ Technology
Wi-Fi enabled for remote control via smartphone app, allowing you to monitor cycle status, download additional programs, and receive completion alerts.
EasyRack™ Plus System
Fully adjustable upper rack with fold-down tines and versatile loading options to accommodate oversized items and various dish sizes.
Wash Cycle Options
Heavy Wash
Intensive cleaning for pots, pans, and heavily soiled dishes
Normal Wash
Standard cleaning for everyday dishes and tableware
Light Wash
Quick cleaning for lightly soiled dishes and glassware
Speed Wash
Fast cleaning cycle that washes in just 30 minutes
Sanitary Cycle
High-temperature wash and steam for sanitization
Rinse Only
Quick rinse to prevent food from drying on dishes
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Dishwasher 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 spray arms, unbalanced load | Check spray arms for obstructions, redistribute dishes evenly |
| Dishes not drying | Rinse aid empty, steam function disabled | Refill rinse aid, enable TrueSteam drying function |
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
- HE: Heating element issue - Contact service center
Manual Downloads
Current Model Manuals
LDF7551ST
Stainless Steel Dishwasher
LDF7545ST
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LDF7552ST
Stainless Steel ThinQ Dishwasher
LDF7553ST
Stainless Steel Smart Dishwasher
Popular Previous Models
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