LG LFX25971ST Owner's Manual

The LG LFX25971ST is a 25 cubic foot French Door Refrigerator with Door-in-Door design, Smart Cooling Plus™ system, SmartThinQ® technology (Wi-Fi enabled), InstaView™ Door-in-Door, Craft Ice™ maker, linear compressor, dual ice makers (crushed and cubed), adjustable gallon door bins, humidity-controlled crispers, LED lighting, and fingerprint-resistant stainless steel finish. 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 to SmartThinQ 7. Using InstaView & Door-in-Door 8. Ice & Water System 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: French Door design with InstaView™ panel, Door-in-Door compartment, dual ice makers, Craft Ice™ system, SmartThinQ® connectivity, linear compressor, and adjustable interior shelves.

FeatureDescription
InstaView™ Door-in-DoorKnock twice to see inside; quick access to frequently used items
SmartThinQ® TechnologyWi-Fi enabled for remote control and monitoring via app
Craft Ice™ MakerMakes slow-melting spherical ice
Dual Ice MakersProduces both cubed and crushed ice
Smart Cooling Plus™Maintains consistent temperature and humidity
Linear CompressorEnergy-efficient and quiet operation
Door-in-DoorSecondary door for easy access to beverages and snacks
Adjustable Gallon Door BinsFits large containers and gallon jugs
Humidity-Controlled CrispersPreserves freshness of fruits and vegetables
Fingerprint-Resistant FinishStainless steel that resists smudges

Installation

Unpack and inspect contents. Ensure proper location and clearances.

  1. Remove packaging: Take off all tape, foam, and cardboard.
  2. Position refrigerator: Place on level floor with required clearances (sides, top, back).
  3. Connect water line: For ice maker and water dispenser (use copper or braided stainless steel line).
  4. Plug into dedicated 115V, 60Hz grounded outlet.
  5. Allow 2-3 hours for cooling before adding food.

WARNING! Refrigerator is heavy; use two people for moving. Ensure water line is properly connected 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 SmartThinQ: Download app and connect refrigerator to Wi-Fi.
  3. Activate ice makers: Ensure water line is connected; first ice batch may take 24 hours.
  4. Organize interior: Adjust shelves and bins as needed.

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

Specifications

Controls and Settings

Access controls via touch panel on door or SmartThinQ app.

Control Panel: Power Cool, Power Freeze, Ice Type Select (cubed/crushed/Craft Ice), Temp Control (fridge/freezer), Filter Reset, Lock, SmartThinQ.

Temperature Settings: Fridge (33-46°F), Freezer (-8 to 5°F). Smart Features: Smart Diagnosis, Vacation Mode, Energy Saver, Sabbath Mode. Ice Options: Select between cubed, crushed, or Craft Ice. Door Alarm: Alerts if door is left open.

Connecting to SmartThinQ

Enables remote monitoring and control via smartphone app.

  1. Download LG SmartThinQ app from App Store or Google Play.
  2. Create account or log in.
  3. Press and hold SmartThinQ button on control panel for 3 seconds.
  4. Follow in-app instructions to connect to your Wi-Fi network.
  5. Use app to adjust temperatures, monitor energy usage, run diagnostics, receive filter reminders.

Tip: Ensure refrigerator is within range of your Wi-Fi router for stable connection.

Using InstaView & Door-in-Door

InstaView provides quick visibility; Door-in-Door offers easy access.

  1. InstaView: Knock twice on the glass panel to illuminate interior lights (15-second duration).
  2. Door-in-Door: Press release button to open secondary door for quick access to beverages.
  3. Adjust Door-in-Door bin: Remove bin by lifting up and out for cleaning or reconfiguration.
  4. Close doors firmly until they click to ensure proper seal.

WARNING! Do not slam doors. Keep InstaView glass clean with soft, dry cloth.

Ice & Water System

Dual ice makers plus Craft Ice™ system; external water and ice dispenser.

  1. Select ice type: Press Ice Type button to choose cubed, crushed, or Craft Ice.
  2. Dispense ice: Press glass against ice dispenser lever.
  3. Dispense water: Press glass against water dispenser lever.
  4. Replace water filter: When filter indicator light turns on, replace LT1000P filter.
  5. Craft Ice: Makes 8 spheres per cycle; allow 24 hours for first batch.

Note: First ice batch may have unusual odor/taste; discard first 2-3 batches.

Care & Cleaning

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

Exterior: Clean stainless steel with LG-approved cleaner and microfiber cloth. Interior: Remove shelves and bins; wash with warm soapy water. Condenser Coils: Vacuum every 6-12 months for efficiency. Ice System: Clean ice maker and bin periodically.

CAUTION! Do not use abrasive cleaners or sharp objects. Never use hot water on cold glass shelves.

Regulatory Information

UL Listed; complies with FCC Part 15 Class B. Energy Star Partner. Copyright © LG Electronics U.S.A., Inc. All rights reserved. For support, visit www.lg.com or contact LG Customer Service at 1-800-243-0000. Model LFX25971ST manufactured for US market.

Troubleshooting

SymptomPossible CauseCorrective Action
Refrigerator not coolingPower/thermostatCheck power connection; ensure temperature set correctly; allow 24 hours for initial cool-down.
Ice not dispensingIce maker off/blockedEnsure ice maker is on; check for ice jam; wait 24 hours for first batch.
Water dispenser not workingFilter/water lineReplace water filter; ensure water line is connected and valve is open.
InstaView not lightingPower/sensorCheck refrigerator power; ensure knocking motion is firm on correct spot.
Loud noisesLeveling/ice makerEnsure refrigerator is level; ice maker sounds are normal during cycle.
SmartThinQ not connectingWi-Fi/passwordCheck Wi-Fi signal; re-enter password; restart refrigerator and router.

Smart Diagnosis: Use LG SmartThinQ app to run diagnostic check.

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

LG LFX25971ST Owner's Manual © - All Rights Reserved 2025