LG ThinQ Dishwasher

User Manual & Installation Guide

Standard Capacity

Installation Guide

Tools Needed:

  • Adjustable wrench
  • Level
  • Screwdrivers (flat and Phillips)
  • Pipe cutter
  • Tape measure
  • Plumber's tape

Step-by-Step Installation

  1. Choose Installation Location: Select a location near necessary plumbing and electrical connections with adequate clearance for door opening.
  2. Remove Shipping Materials: Remove all shipping bolts and packaging materials from the dishwasher.
  3. Connect Water Supply: Connect hot water supply line to the water inlet valve. Use only new hoses and apply plumber's tape.
  4. Connect Drain Hose: Route the drain hose into the sink drain or garbage disposal with a high loop to prevent backflow.
  5. Electrical Connection: Connect to a properly grounded 120V, 60Hz, AC only outlet. Dedicated circuit recommended.
  6. Level the Dishwasher: Adjust the leveling legs to ensure the dishwasher is level from front to back and side to side.
  7. Secure to Countertop: Use mounting brackets to secure the dishwasher to the underside of the countertop.
  8. 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 installer to ensure proper operation and maintain warranty coverage.

Specifications

Model Series DFB425FP
Type Built-in Dishwasher
Color Stainless Steel / Black
Place Settings 14 Place Settings
Noise Level 44 dB
Control Type Touch Controls with LED Display
Energy Rating A+++ (Most Efficient)
Water Consumption 2.9 Gallons per Cycle
Power Requirements 120V, 60Hz, 15A
Dimensions (HxWxD) 34.5 x 23.75 x 24.5 inches
Weight 85 lbs
Drying System Heat Dry with Fan Assist

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

QuadWash™ Technology

Four multi-directional spray arms target every corner of the dishwasher, ensuring thorough cleaning of all dishes, even heavily soiled pots and pans.

TrueSteam®

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

Direct Drive Motor

LG's innovative Direct Drive motor connects directly to the wash system without belts, reducing noise and increasing reliability.

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™ Operation

Advanced sound insulation and Direct Drive motor technology provide ultra-quiet operation at only 44 dB.

EasyRack™ Plus System

Adjustable upper rack with fold-down tines and versatile loading options to accommodate large and odd-shaped items.

Wash Programs Explained

Heavy Wash

Intensive cleaning for pots, pans, and heavily soiled dishes

Normal Wash

Standard cleaning for everyday dishes and cookware

Light Wash

Quick cycle for lightly soiled dishes and glassware

Express Wash

Fast 30-minute cycle for lightly soiled loads

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 load evenly
Dishes not drying Heating element issue, rinse aid empty Check heating element, refill rinse aid dispenser

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

DFB425FP

Standard Capacity ThinQ Dishwasher

DFB424FP

Standard Capacity Steam Dishwasher

LDF5545ST

Tall Tub ThinQ Dishwasher

LDP6797ST

Stainless Steel ThinQ Dishwasher

Popular Previous Models

LDF7924ST

Stainless Steel Dishwasher

LDP6810SS

Stainless Steel Tall Tub

LDT9966BD

Black Stainless Dishwasher

LDF7555ST

Stainless Steel Standard

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