LG Dishwasher Model LDS5540ST Manual

The LG Dishwasher Model LDS5540ST is a 24-inch built-in stainless steel dishwasher featuring QuadWash™ technology, LoDecibel™ quiet operation, TrueSteam® technology, SmartThinQ® connectivity, EasyRack™ Plus adjustable upper rack, ProDry® system, and multiple wash cycles. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Utilities 7. Operating Cycles 8. Smart Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Stainless steel tub, QuadWash™ spray arms, EasyRack™ Plus system, ProDry® technology, SmartThinQ® connectivity.

Feature	Description
QuadWash™ Technology	Four spray arms for thorough cleaning
LoDecibel™ Operation	Quiet performance at 44 dBA
TrueSteam® Technology	Steam cleaning for sanitization
SmartThinQ®	Wi-Fi connectivity for remote control
EasyRack™ Plus	Adjustable upper rack with fold-down tines
ProDry® System	Enhanced drying performance
Multiple Wash Cycles	Heavy, Normal, Light, Rinse, etc.
Soil Sensor	Automatically adjusts cycle time
Stainless Steel Interior	Durable and resistant to stains
LED Display	Easy-to-read control panel

Installation

Unpack and inspect contents. Ensure proper electrical and plumbing connections.

Prepare installation area: Level floor, adequate space for door opening.
Connect water supply: Use 1/2-inch water line with shut-off valve.
Connect drain hose: Ensure proper height and secure connection.
Electrical connection: 120V, 60Hz, 15-amp dedicated circuit.
Secure dishwasher: Level and anchor to countertop or adjacent cabinets.

WARNING! Installation must be performed by qualified technician. Ensure proper grounding.

First-Time Setup

After installation, prepare for first use.

Remove shipping materials: Check interior for protective films and blocks.
Run initial rinse cycle: Use rinse cycle without dishes to clean interior.
Load detergent: Fill detergent dispenser with recommended detergent.
Select cycle: Choose appropriate wash cycle for load type.
Connect SmartThinQ: Download app and connect to home Wi-Fi network.

CAUTION! Use only recommended detergents. Do not use regular dish soap.

Specifications

Dimensions: 24 inches wide, 34.5 inches high, 24.5 inches deep
Capacity: 14 place settings
Noise Level: 44 dBA
Water Consumption: 2.9 gallons per cycle (Normal wash)
Power Requirements: 120V, 60Hz, 15A
Water Pressure: 20-120 psi
Wash Cycles: Heavy, Normal, Light, Rinse, Speed Wash, etc.
Drying System: ProDry® with fan-assisted drying
Connectivity: SmartThinQ® Wi-Fi enabled
Warranty: 10-year limited parts warranty

Controls and Settings

Access controls via front panel or SmartThinQ app.

Control Panel: POWER, CYCLE SELECTION, OPTIONS, START/PAUSE, DELAY START, CHILD LOCK.

Wash Cycles: HEAVY (tough soils), NORMAL (daily use), LIGHT (lightly soiled), RINSE (rinse only), SPEED WASH (quick clean), SANITIZE (high temp). Options: HEATED DRY, EXTRA DRY, DELAY START, SABBATH MODE. Settings: SOUND ON/OFF, CHILD LOCK, SMARTTHINQ SETUP.

Connecting Utilities

Water supply, drain, and electrical connections.

Water supply: 1/2-inch hot water line (120-140°F recommended).
Drain connection: Proper height (minimum 20 inches from floor).
Electrical: 120V grounded outlet, dedicated 15-amp circuit.
SmartThinQ: Connect to 2.4GHz Wi-Fi network.

Tip: Ensure water supply valve is fully open before operation.

Operating Cycles

Select appropriate cycle for load type and soil level.

Load dishes: Arrange properly in racks, avoid blocking spray arms.
Add detergent: Use recommended dishwasher detergent in dispenser.
Select cycle: Press CYCLE button to choose wash program.
Add options: Select HEATED DRY, DELAY START, etc. as needed.
Start cycle: Press START/PAUSE to begin washing.
Monitor progress: LED display shows remaining time.
Unload: Wait for cycle completion signal; open door carefully.

WARNING! Do not open door during operation. Steam and hot water can cause burns.

Smart Features

SmartThinQ® connectivity for remote monitoring and control.

Remote Start/Stop: Start cycles from smartphone. Cycle Monitoring: Track progress and receive notifications. Diagnostics: Receive maintenance alerts and troubleshooting guidance. Software Updates: Automatic feature updates. Voice Control: Compatible with Google Assistant and Amazon Alexa.

Care & Cleaning

Regular maintenance ensures optimal performance.

Clean filter: Remove and rinse filter monthly.
Wipe door gasket: Clean rubber seal to prevent leaks.
Clean spray arms: Check for debris and clean as needed.
Run cleaning cycle: Use affresh® cleaner every 30 cycles.
Exterior cleaning: Wipe with damp cloth, mild detergent.

CAUTION! Unplug before cleaning. Do not use abrasive cleaners.

Regulatory Information

UL listed and certified. Energy Star® qualified. Meets NSF/ANSI 184 for residential dishwashers. Copyright © 2023 LG Electronics; trademarks of LG Electronics. For support, visit www.lg.com or contact 1-800-243-0000.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Dishwasher won't start	Power/door	Check power supply; ensure door fully closed; reset circuit breaker.
Poor cleaning results	Spray arms/filter	Clean spray arms; check filter for debris; use proper detergent.
Water not draining	Drain hose/filter	Check drain hose for kinks; clean filter; ensure proper installation height.
Leaking water	Door seal/connections	Check door gasket; ensure proper loading; tighten water connections.
Unusual noise	Spray arms/objects	Check for objects touching spray arms; ensure proper rack positioning.

Reset: Unplug for 1 minute or press and hold POWER for 10 seconds.

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