LG Dishwasher Service Manual

Technical Manual & Service Guide

Professional Series

Installation Guide

Tools Needed:

  • Adjustable wrench
  • Level
  • Screwdrivers (flat and Phillips)
  • Pipe cutter
  • Tape measure
  • Electrical tester

Step-by-Step Installation

  1. Choose Installation Location: Select a location near water supply, drain, and electrical connections with adequate clearance.
  2. Remove Shipping Materials: Remove all shipping bolts, brackets, and packaging materials from the dishwasher.
  3. Connect Water Supply: Connect hot water supply line to the water inlet valve using approved connectors.
  4. Connect Drain Hose: Route the drain hose to the sink drain or garbage disposal with proper high loop installation.
  5. Electrical Connection: Connect to a dedicated 120V, 60Hz, 15A circuit with proper grounding. Hardwired connection required.
  6. Level the Dishwasher: Adjust the leveling legs to ensure the dishwasher is perfectly level for proper operation.
  7. Test Run: Run the dishwasher through a complete cycle to check for leaks and proper operation.
Warning: All installations must be performed by a qualified technician to ensure proper operation and maintain warranty coverage.

Specifications

Model Series LDFN454HT
Type Built-in Dishwasher
Color Stainless Steel / Black
Place Settings 14 Place Settings
Noise Level 44 dBA
Control Type Touch Controls with LED Display
Energy Rating A+++ (Most Efficient)
Water Consumption 9.5 L per cycle
Power Requirements 120V, 60Hz, 15A
Dimensions (HxWxD) 82 x 60 x 55 cm
Weight 45 kg
Drying System Heat Exchange Drying

Warranty Information

  • Full Warranty: 2 years 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 technology provides reliable and quiet operation with fewer moving parts for increased durability and efficiency.

QuadWash™ System

Four multi-directional spray arms target every corner of the dishwasher, ensuring thorough cleaning from multiple angles for spotless results.

TrueSteam™ Technology

Steam technology helps to remove tough, baked-on food while sanitizing dishes and reducing the need for pre-rinsing.

LoDecibel™ Operation

Advanced sound insulation and motor technology provide ultra-quiet operation at just 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 large and oddly shaped items.

Wash Programs Explained

Heavy Wash

Intensive cleaning for heavily soiled pots, pans, and baking 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

Quick rinse to prevent food from drying on dishes before full wash

Sanitize

High-temperature wash that eliminates 99.9% of bacteria

Crystal Dry

Special drying program for plastic items and delicate glassware

Troubleshooting

Problem Possible Cause Solution
Dishwasher won't start Power issue, door not closed properly, child lock engaged Check power supply, ensure door is latched completely, disable child lock
Poor cleaning results Overloading, wrong detergent, clogged spray arms Properly load dishes, use correct detergent, clean spray arms
Water not draining Drain hose clogged, filter blocked, drain pump issue Check drain hose for obstructions, clean filter, inspect drain pump
Leaking water Door not sealed, overfilling, loose connections Check door seal, ensure proper loading, check water connections
Unusual noises Foreign objects in pump, spray arm obstruction Check for foreign objects, ensure spray arms rotate freely
Dishes not drying Rinse aid empty, heating element failure, loading issue Refill rinse aid, check heating element, improve air circulation

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 failure - Check heating element and thermostat

Manual Downloads

Current Model Manuals

LDFN454HT

14 Place Settings QuadWash

LDP679HT

14 Place Settings SmartThinQ

LDF755HT

15 Place Settings Steam

LDT996HT

16 Place Settings Top Control

Popular Previous Models

LDF8072ST

14 Place Settings Standard

LDP681HT

14 Place Settings Wi-Fi

LDT780HT

15 Place Settings Front Control

LDF7930ST

14 Place Settings Stainless

Note: For models not listed here, please visit the LG Support Website for complete documentation.