Installation Guide
Tools Needed:
- Adjustable wrench
- Level
- Screwdrivers (flat and Phillips)
- Pipe wrench
- Tape measure
- Drill
Step-by-Step Installation
- Prepare Installation Space: Ensure cabinet opening meets required dimensions and has proper clearance for water and drain connections.
- Remove Shipping Materials: Remove all protective films, tapes, and shipping bolts from the dishwasher.
- Connect Water Supply: Connect hot water supply line to the water inlet valve. Use only new braided stainless steel hoses.
- Connect Drain Hose: Route the drain hose to the sink drain or garbage disposal with a high loop to prevent backflow.
- Electrical Connection: Connect to a properly grounded 120V, 60Hz, dedicated circuit. Follow local electrical codes.
- Secure in Cabinet: Level the dishwasher and secure it to the 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 Number | 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) | 33.875" x 23.875" x 24.5" |
| 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
Direct Drive Motor
LG's innovative Direct Drive motor technology provides reliable performance with reduced noise and vibration, ensuring long-lasting operation.
QuadWash™ Technology
Four multi-directional spray arms target every corner of the dishwasher, providing superior cleaning coverage for even the toughest stuck-on food.
TrueSteam®
Steam technology helps to remove baked-on food, sanitize dishes, and reduce water spots, leaving dishes hygienically clean and sparkling.
SmartThinQ Technology
Wi-Fi enabled for remote control via smartphone app, allowing you to monitor cycle status, download additional programs, and receive completion alerts.
LoDecibel™ Quiet Operation
Advanced sound insulation and motor technology ensure ultra-quiet operation at just 44 dBA, quieter than a library.
EasyRack™ Plus System
Fully adjustable upper and lower racks with customizable tines and fold-down cup shelves to accommodate dishes of all shapes and sizes.
Wash Programs
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 to prevent drying of food particles
Sanitary Cycle
High-temperature wash and steam for sanitization
Crystal Clean
Gentle cycle with lower temperature 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 dishes evenly |
| Dishes not drying | Rinse aid empty, incorrect cycle selection | Refill rinse aid, select heated dry option |
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
LDP6797ST
Built-in Dishwasher 15 Place Settings
LDF5545ST
Built-in Dishwasher with Steam
LDT9965BD
Built-in Dishwasher Black Stainless
LDP6810BD
Built-in Dishwasher Black