Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Pliers
- Tape measure
- Drill with hole saw attachment
Step-by-Step Installation
- Choose Installation Location: Select a location near necessary plumbing and electrical connections under kitchen countertop.
- Prepare Cabinet Opening: Ensure cabinet opening meets required dimensions and has proper clearance for water and drain connections.
- Connect Water Supply: Connect cold water supply line to the water inlet valve. Use only new hoses and ensure tight connections.
- Connect Drain Hose: Route the drain hose to sink drain or garbage disposal with proper air gap installation.
- Electrical Connection: Connect to a properly grounded 120V, 60Hz, dedicated circuit. Do not use an extension cord.
- Secure Dishwasher: Level the dishwasher and secure to countertop and adjacent cabinets using mounting brackets.
- 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 | Condensation Drying with LoDecibel™ Quiet Operation |
Warranty Information
- Full Warranty: 1 year parts and labor
- Direct Drive 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
QuadWash™ Technology
Four multi-directional spray arms target every corner of the dishwasher, providing complete coverage and superior cleaning performance.
Direct Drive Motor
LG's innovative Direct Drive motor connects directly to the wash system without belts or pulleys, reducing noise and increasing reliability.
TrueSteam® Technology
Steam technology helps to remove tough, baked-on foods while reducing water spots and eliminating 99.99% of bacteria.
LoDecibel™ Quiet Operation
Advanced sound insulation and Direct Drive motor technology combine to deliver ultra-quiet operation at just 44 dBA.
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
Adjustable upper rack with fold-down tines provides flexible loading options for tall items and oddly shaped dishes.
Wash Programs Explained
Heavy Wash
Intensive cleaning for pots, pans, and heavily soiled dishes
Normal Wash
Standard cleaning for everyday dishes with normal soil levels
Light Wash
Quick cycle for lightly soiled dishes with energy efficiency
Rinse Only
Rinses dishes without detergent to prevent drying of food particles
Sanitary Cycle
High-temperature wash that eliminates 99.99% of bacteria
Crystal Dry
Gentle drying with lower temperatures for delicate glassware
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 for foreign objects, redistribute load evenly |
| Dishes not drying | Rinse aid empty, high humidity, incorrect loading | Refill rinse aid, ensure proper air circulation, check loading |
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
Built-in Dishwasher with QuadWash
LDF7545ST
Built-in Dishwasher with TrueSteam
LDFN454HT
Built-in Dishwasher with ThinQ
LDP6810SS
Built-in Dishwasher Stainless Steel
Popular Previous Models
LDF5545ST
Built-in Dishwasher 44 dBA
LDT9965BD
Built-in Dishwasher Black
LDP6797BD
Built-in Dishwasher Black Stainless
LDF7930ST
Built-in Dishwasher Stainless