LG Microwave Oven Service Manual PDF

Technical Service & Repair Guide

Professional Service Documentation

Installation Guide

Tools Needed:

  • Phillips screwdriver
  • Flat-head screwdriver
  • Multimeter
  • Wire strippers
  • Voltage tester
  • Safety gloves

Step-by-Step Installation

  1. Safety First: Disconnect power supply and ensure microwave is completely unplugged before beginning installation.
  2. Location Selection: Choose a well-ventilated location with proper clearance as specified in the manual.
  3. Mounting Preparation: Ensure mounting surface is stable and can support the microwave's weight.
  4. Electrical Connection: Connect to dedicated 120V, 15A circuit with proper grounding. Follow local electrical codes.
  5. Ventilation Check: Verify proper ventilation clearance and install exhaust duct if required.
  6. Secure Mounting: Use provided mounting hardware to securely fasten the microwave oven.
  7. Final Testing: Perform safety checks and test all functions before regular use.
Warning: Installation should be performed by qualified technicians only. High voltage components can cause serious injury or death.

Specifications

Model Series LMV2031ST / LMV2031BD
Type Over-the-Range Microwave Oven
Color Stainless Steel / Black Stainless
Capacity 2.0 cu. ft.
Power Output 1000 Watts
Control Type Touch Control Panel with LED Display
Cooking Modes 10 Power Levels, Sensor Cooking, Convection
Exhaust System 300 CFM, Convertible Ventilation
Power Requirements 120V, 60Hz, 15A
Dimensions (HxWxD) 16.5 x 29.9 x 15.9 inches
Weight 55 lbs
Turntable Size 16.5 inches

Warranty Information

  • Full Warranty: 1 year parts and labor
  • Magnetron Warranty: 10 years limited
  • Additional Coverage: Optional extended service plans available

For warranty service, contact LG Customer Service at 1-800-243-0000 or visit LG.com

Key Features

Inverter Technology

LG's Inverter Technology delivers a continuous stream of power for even cooking, precise temperature control, and better preservation of food texture and nutrients.

Sensor Cooking

Advanced sensor technology automatically detects humidity levels and adjusts cooking time and power for perfect results every time.

EasyClean® Interior

The specially coated interior surface resists stains and makes cleaning simple with just a wipe of a damp cloth.

SmartThinQ Technology

Wi-Fi enabled for remote control and monitoring via smartphone app, allowing you to start, stop, and monitor cooking from anywhere.

Convection Cooking

Combines microwave speed with convection baking and roasting for crispy, golden-brown results.

Turntable On/Off

Flexible cooking options with the ability to disable the turntable for larger dishes and cookware.

Cooking Programs

Popcorn

Automatically adjusts time and power for perfect popcorn every time

Beverage

Quickly heats beverages to the ideal serving temperature

Potato

Sensor cooking for evenly baked potatoes

Frozen Entree

Automatically defrosts and cooks frozen meals

Reheat

Intelligent reheating without overcooking

Auto Defrost

Quick and even defrosting of meats and poultry

Troubleshooting

Problem Possible Cause Solution
Microwave won't start Door not closed properly, power issue Ensure door is fully closed, check power supply and circuit breaker
Uneven cooking Turntable not rotating, improper placement Check turntable operation, center food on turntable
Sparking inside Metal objects, damaged waveguide cover Remove metal objects, replace waveguide cover if damaged
Display not working Power supply issue, control board failure Check power connection, test control board voltages
Unusual noises Fan obstruction, turntable motor issue Check for obstructions in fan area, inspect turntable motor
Ventilation not working Fan motor failure, blocked vents Test fan motor, clear any obstructions in ventilation path

Error Codes

  • E1: Door switch failure - Check door switches and wiring
  • E2: Temperature sensor error - Replace temperature sensor
  • E3: Communication error - Check control board connections
  • E4: Magnetron overheat - Check cooling fan and ventilation
  • E5: High voltage circuit error - Test high voltage components
  • E6: Turntable motor error - Inspect turntable motor and drive

Manual Downloads

Current Model Manuals

LMV2031ST

2.0 cu.ft. Smart Inverter Microwave

LMV2031BD

2.0 cu.ft. Black Stainless Microwave

LMC2075ST

2.0 cu.ft. Convection Microwave

LMC1575ST

1.5 cu.ft. Sensor Microwave

Popular Previous Models

LMC2085ST

2.0 cu.ft. EasyClean Microwave

LMV1762ST

1.7 cu.ft. Over-the-Range Microwave

LMC1442ST

1.4 cu.ft. Countertop Microwave

LMV1683ST

1.6 cu.ft. Stainless Steel Microwave

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