LG Dishwasher Installation Manual LDF7774ST

The LG LDF7774ST is a premium built-in dishwasher featuring QuadWash™ technology, LoDecibel™ quiet operation, TrueSteam® for sanitizing, SmartThinQ® technology for Wi-Fi connectivity, EasyRack™ Plus adjustable upper rack, Stainless Steel interior, and multiple wash cycles. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation Requirements 3. Step-by-Step Installation 4. Specifications 5. Controls and Settings 6. Electrical and Plumbing Connections 7. Operating Instructions 8. Smart Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: QuadWash™ spray arms, EasyRack™ Plus adjustable upper rack, Stainless Steel tub, Control panel with LED display, SmartThinQ® connectivity.

Feature	Description
QuadWash™ Technology	Four spray arms for thorough cleaning
LoDecibel™ Operation	Quiet performance at 44 dBA
TrueSteam®	Sanitizes and reduces odors
EasyRack™ Plus	Adjustable upper rack with fold-down tines
SmartThinQ®	Wi-Fi connectivity and app control
Stainless Steel Interior	Durable and resistant to stains
Multiple Wash Cycles	Heavy, Normal, Light, Rinse Only, etc.
Delay Start	Program start time up to 19 hours
Child Lock	Prevents accidental operation
Energy Star Certified	Energy efficient operation

Installation Requirements

Before installation, verify you have the necessary tools and materials.

Electrical: 120V, 60Hz, 15A dedicated circuit
Water Supply: Hot water connection (120°F recommended)
Drain: Proper drain connection with air gap
Space: Standard 24-inch cabinet opening
Tools: Level, adjustable wrench, screwdrivers, pliers

WARNING! Dishwasher must be properly grounded. Ensure water and electrical connections are secure before operation.

Step-by-Step Installation

Follow these steps for proper installation.

Position dishwasher in cabinet opening, ensuring level placement
Connect water supply line to hot water valve
Connect drain hose to air gap or garbage disposal
Make electrical connection to dedicated circuit
Secure dishwasher to countertop with mounting brackets
Test for leaks and proper operation

CAUTION! Two people recommended for handling. Ensure all connections are tight and secure.

Specifications

Model: LDF7774ST
Type: Built-in Dishwasher
Capacity: 14 place settings
Noise Level: 44 dBA
Water Consumption: 2.9 gallons per cycle (Normal)
Power Requirements: 120V, 60Hz, 15A
Dimensions (HxWxD): 33.875" x 23.875" x 24.5"
Finish: Stainless Steel
Warranty: 10-year limited warranty on tub and parts

Controls and Settings

Front control panel with LED display and touch controls.

Main Controls: POWER, CYCLE SELECTION (Heavy, Normal, Light, Rinse, etc.), OPTIONS (Heated Dry, Sanitize, Delay Start), START/PAUSE

Cycle Settings: Heavy (tough soils), Normal (daily use), Light (lightly soiled), Rinse Only (rinse and hold), Crystal (gentle for delicate items). Options: Heated Dry, Sanitize (uses TrueSteam®), Delay Start (1-19 hours), Child Lock. Smart Settings: Wi-Fi indicator, connectivity status.

Electrical and Plumbing Connections

Proper connections are essential for safe operation.

Turn off power and water supply before connecting
Connect to dedicated 15A circuit with proper grounding
Use 1/2-inch water supply line with shut-off valve
Ensure drain hose has proper loop to prevent backflow
Verify all connections are secure before testing

Tip: Use thread seal tape on all water connections to prevent leaks.

Operating Instructions

Daily operation and cycle selection.

Load dishes properly in racks, ensuring spray arms can rotate freely
Add detergent to dispenser (use recommended types only)
Select appropriate cycle for load type and soil level
Press START; unit will begin cycle automatically
Use Delay Start for off-peak operation if desired
Unit will signal completion with audible tone

WARNING! Use only dishwasher-safe detergents. Do not overload racks.

Smart Features

SmartThinQ® technology enables remote monitoring and control.

Wi-Fi Setup: Download LG SmartThinQ app, follow pairing instructions. Remote Control: Start/stop cycles, monitor progress, receive notifications. Diagnostics: App can diagnose common issues and provide solutions. Software Updates: Automatic updates for improved performance.

Care & Maintenance

Regular maintenance ensures optimal performance.

Monthly Cleaning: Clean filter assembly, wipe door seals, run cleaning cycle with dishwasher cleaner. Quarterly: Check spray arms for clogs, inspect drain hose. Annual: Professional inspection recommended.

CAUTION! Unplug unit before performing any maintenance. Use only recommended cleaning products.

Regulatory Information

UL Listed; complies with NSF/ANSI 184 for residential dishwashers. Energy Star® certified for energy efficiency. California Energy Commission compliant. For support, visit www.lg.com or contact LG Customer Service at 1-800-243-0000.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Dishwasher won't start	Power/child lock	Check power supply; verify child lock is off; close door securely.
Poor cleaning results	Spray arms/filter	Clean spray arms; check filter for debris; use proper detergent.
Water not draining	Drain hose/clog	Check drain hose for kinks; clean filter; ensure proper installation.
Leaking water	Connections/door seal	Tighten water connections; check door seal for damage; level unit.
Unusual noise	Spray arms/installation	Ensure spray arms rotate freely; check for proper leveling.

Reset: Turn power off for 5 minutes, then restart.

Service: 1-800-243-0000; www.lg.com