LG LMN248HVT User Manual

Please read this manual carefully before operating
your set and retain it for future reference.
General
Multi-Inverter Type
P/NO : MFL68280204
SERVICE MANUAL
AIR
CONDITIONER

LG LMN248HVT Specifications

General

Brand	LG
Model	LMN248HVT
Category	Air Conditioner
Language	English

Summary

Part 1 General Information

1. Safety Precautions

Essential safety guidelines and warnings for operation and repair.

Part 3. Basic Control

1. Normal operation

2 Compressor control

Details compressor control using Fuzzy logic for stable system performance.

3. EEV( Electronic Expansion Valve) control

Explains EEV operation with fuzzy rules for superheat control.

6. Protection control

Outlines various protection mechanisms based on pressure, temperature, and current.

Part 4. Test Run

1. Check before Test Run

2. Test Run Flow chart

3. Test Running

Part 5. Trouble Shooting

1. Self-diagnosis Function

Explains how the unit self-diagnoses errors and indicates them via display codes.

2. Pump Down

3. Evacuation

4. Gas Charging

6. Electronic Parts

Diagnosing issues related to the product not operating or specific component failures.

Troubleshooting Indoor Errors

Detailed troubleshooting for various indoor unit errors indicated by display codes.

Troubleshooting Outdoor Errors

Detailed troubleshooting for various outdoor unit errors indicated by display codes.