Installation Guide
Tools Needed:
- Measuring tape
- Level
- Screwdrivers (flat and Phillips)
- Drill (if wall mounting)
- Pencil for marking
Step-by-Step Installation
- Choose Installation Location: Select a stable, level surface with adequate ventilation and access to electrical outlet.
- Clear Surrounding Area: Ensure minimum 10cm clearance on top, 5cm on sides, and 15cm at the back for proper ventilation.
- Check Power Requirements: Verify electrical outlet meets requirements (230V, 50Hz) and is properly grounded.
- Remove Packaging Materials: Remove all protective films, tapes, and shipping materials from the microwave.
- Position the Microwave: Place on a stable surface or install according to mounting instructions if wall-mounted model.
- Level the Microwave: Use a level to ensure the microwave is perfectly horizontal for optimal performance.
- Initial Setup: Plug in, set clock, and run a test cycle with a cup of water to verify proper operation.
Specifications
| Model Number | MEZ66990903 |
| Type | Smart Inverter Microwave Oven |
| Color | Stainless Steel / Black |
| Capacity | 32 Liters |
| Power Output | 1000W (Microwave) |
| Control Type | Touch Controls with LED Display |
| Energy Rating | A (Efficient) |
| Cooking Programs | 15 Auto Cook Programs |
| Power Requirements | 230V, 50Hz, 13A |
| Dimensions (HxWxD) | 38.5 x 59.5 x 48.5 cm |
| Weight | 24 kg |
| Turntable Diameter | 34.5 cm |
Warranty Information
- Full Warranty: 2 years parts and labor
- Magnetron Warranty: 8 years on microwave generator
- Additional Coverage: Optional extended warranty available
For warranty service, contact LG Customer Service at 1-800-243-0000 or visit LG.com
Key Features
Smart Inverter Technology
LG's advanced inverter technology provides precise temperature control and consistent cooking power, eliminating the power surges of traditional microwaves for better cooking results.
EasyClean™ Interior
The special ceramic enamel interior resists stains and makes cleaning effortless, while the rounded corners prevent food buildup for better hygiene.
Sensor Cooking
Intelligent humidity sensors automatically detect steam levels and adjust cooking time and power for perfect results every time.
SmartThinQ Technology
Wi-Fi enabled for remote control via smartphone app, allowing you to monitor cooking progress, download recipes, and receive completion alerts.
Eco Mode
Energy-saving feature that reduces standby power consumption by up to 50% compared to conventional models.
Multi-stage Cooking
Program up to 3 different cooking stages with varying power levels and times for complex recipes.
Cooking Programs Explained
Popcorn
Automatically adjusts time and power for perfect popcorn every time
Beverage
Heats drinks to ideal serving temperature without boiling over
Potato
Cook potatoes evenly from inside out for fluffy results
Pizza
Reheats pizza while maintaining crisp crust and melted cheese
Frozen Vegetable
Defrosts and cooks frozen vegetables while preserving nutrients
Chicken
Special program for cooking chicken pieces evenly and safely
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Microwave won't start | Door not closed properly, power issue | Ensure door is fully closed, check power supply and outlet |
| Uneven cooking | Turntable not rotating, improper food placement | Check turntable operation, arrange food evenly on plate |
| Sparking inside | Metal objects, damaged waveguide cover | Remove metal objects, check for damaged interior coating |
| Display not working | Power surge, control board issue | Unplug for 10 minutes, then restart. If persists, contact service |
| Unusual noises | Turntable obstruction, cooling fan issue | Check for objects blocking turntable, ensure proper ventilation |
| Food not heating | Magnetron failure, power setting incorrect | Verify power setting, if problem continues contact service center |
Error Codes
- E1: Temperature sensor error - Unplug for 10 minutes, then restart
- E2: Communication error - Check SmartThinQ connection
- E3: Door switch malfunction - Ensure door closes properly
- E4: Magnetron temperature high - Allow to cool before next use
- E5: Key input error - Clean control panel, check for moisture
- E6: Memory error - Reset to factory settings
Manual Downloads
Current Model Manuals
MEZ66990903
32L Smart Inverter Microwave
MEZ66990901
32L Black Microwave
MEZ66990905
32L ThinQ Microwave
MEZ66990907
32L Stainless Steel
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