LG Refrigerator Model LFX31945ST Manual

The LG LFX31945ST is a 31 cubic foot French Door Refrigerator with InstaView™ Door-in-Door®, Linear Cooling™ technology, Smart Cooling Plus™ system, Craft Ice™ maker, and smart connectivity via LG ThinQ®. It features dual ice makers, adjustable shelves, humidity-controlled crispers, and door cooling+. 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. Using InstaView & Smart Features 7. Storage & Organization 8. Ice & Water System 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: French doors with InstaView panel, Craft Ice™ maker, dual evaporators, linear compressor, adjustable gallon door bins, and smart diagnostics.

FeatureDescription
InstaView™ Door-in-Door®Knock twice to see inside without opening the door
Linear Cooling™Precise temperature control with minimal fluctuations
Craft Ice™ MakerMakes slow-melting spherical ice
Smart Cooling Plus™Multi-air flow and door cooling+ for even temperature
LG ThinQ® TechnologyWi-Fi enabled for remote control and diagnostics
Dual Ice MakersProduces cubed ice and Craft Ice simultaneously
Adjustable Split ShelvesFlexible storage for tall items
Humidity Controlled CrispersPreserves freshness of fruits and vegetables
Door AlarmAlerts if door is left open
Energy Star® CertifiedEnergy efficient operation

Installation

Unpack and inspect contents. Ensure proper location and clearances.

  1. Remove packaging: Take off all tape, foam, and protective film.
  2. Position refrigerator: Place on level floor with 2-inch clearance at back and sides.
  3. Connect water line: For ice maker and water dispenser, connect to cold water supply.
  4. Plug into dedicated 115V AC outlet.
  5. Allow to stabilize: Let unit stand upright for 2 hours before powering on.

WARNING! Refrigerator is heavy; use two people for moving. Ensure water line connection is secure to prevent leaks.

First-Time Setup

Power on refrigerator; follow initial setup prompts.

  1. Set temperature: Default is 37°F for fridge, 0°F for freezer. Adjust via control panel.
  2. Enable InstaView: Knock twice on the Door-in-Door panel to activate.
  3. Connect to Wi-Fi: Download LG ThinQ app and follow pairing instructions.
  4. Start ice makers: Discard first few batches of ice (about 24 hours).
  5. Organize shelves: Adjust shelves and bins to suit storage needs.

CAUTION! Do not overload shelves. Allow proper air circulation inside.

Specifications

Controls and Settings

Access controls via external panel and LG ThinQ app.

Control Panel: Temperature settings, Ice type selection, Door alarm, Filter reset, Smart diagnosis.

Temperature Settings: Fridge (34-46°F), Freezer (-6 to 5°F). Ice Options: Cubed, Crushed, Craft Ice. Smart Features: Vacation mode, Express freeze, Sabbath mode. Filter Indicator: Alerts when filter needs replacement. Smart Diagnosis: Helps troubleshoot issues via app or phone.

Using InstaView & Smart Features

InstaView: Knock twice on Door-in-Door panel to light interior. LG ThinQ: Control remotely, monitor energy usage, receive alerts.

  1. Download LG ThinQ app from app store.
  2. Create account and add refrigerator.
  3. Use app to adjust temperatures, monitor filter status, run diagnostics.
  4. Set notifications for open door, filter replacement, or errors.

Tip: Ensure refrigerator is connected to 2.4GHz Wi-Fi network for proper connectivity.

Storage & Organization

Optimize storage with adjustable components.

  1. Adjustable shelves: Slide or remove for tall items.
  2. Door bins: Hold gallon containers; adjustable heights.
  3. Crispers: Use high humidity for veggies, low for fruits.
  4. Freezer baskets: Slide-out for easy access.
  5. InstaView compartment: Store frequently used items.

WARNING! Do not block air vents. Overloading affects cooling performance.

Ice & Water System

Dual ice makers produce cubed and Craft Ice.

  1. Select ice type: Use control panel or app.
  2. Water dispenser: Press lever for water; hold for continuous flow.
  3. Change filter: When indicator lights or every 6 months.
  4. Clean ice maker: Follow manual instructions periodically.
  5. If no ice/water: Check water supply, filter, and ensure ice maker is on.

CAUTION! Use only LG-approved water filters. Do not use with softened water.

Care & Cleaning

Unplug before cleaning interior. Use mild detergent and soft cloth.

  1. Exterior: Wipe with damp cloth; use stainless steel cleaner for prints.
  2. Interior: Clean shelves and bins with baking soda solution.
  3. Condenser coils: Vacuum every 6-12 months (located at back or bottom).
  4. Door seals: Wipe clean to maintain seal.

CAUTION! Do not use abrasive cleaners or sharp objects. Never pour water inside.

Regulatory Information

UL listed; complies with FCC Part 15. Energy Star® partner. Copyright © LG Electronics. For support, visit www.lg.com or contact LG Customer Service at 1-800-243-0000. Model LFX31945ST manufactured for US market.

Troubleshooting

SymptomPossible CauseCorrective Action
Refrigerator not coolingPower/doors/settingsCheck power; ensure doors closed; verify temperature settings.
Ice maker not workingWater supply/filterEnsure water connected; replace filter; wait 24 hours.
Water dispenser slowFilter/water pressureReplace filter; check home water pressure.
InstaView not lightingPower/knock sensorEnsure unit powered; knock firmly twice; check settings.
Unusual noiseLeveling/fanLevel refrigerator; check for items touching fan.
Wi-Fi not connectingNetwork/routerEnsure 2.4GHz network; restart router; re-pair in app.

Smart Diagnosis: Use LG ThinQ app or call 1-800-243-0000 with error code.

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

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