LG LP123HD3A User Manual

Window Air Conditioner
SVC MANUAL(Exploded View)
MODEL : LP123CD3A
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
Internal Use Only
http://biz.lgservice.com

LG LP123HD3A Specifications

General

Type	Portable Air Conditioner
Cooling Capacity	12, 000 BTU
Fan Speeds	3
Voltage	115V
Power Supply	Corded Electric
Refrigerant	R410A
Warranty	1 year limited warranty
Dehumidification	Yes

Summary

Specifications

Features and Benefits

Key Operational Features

Highlights IIR, Compressor Delay, Fan Modes, and LED Diagnostics for core functionality.

Component and Protection Features

Details on Compressor, Filters, Grilles, Freeze Protection, Temp Limits, and Safety Protections.

Advanced & Optional Features

Covers Remote Control, Zone Sensor, and specific operational modes.

Control Locations

Ventilation Control

Explains the ventilation lever for fresh air intake and its effect on efficiency.

Electronic Controls

Control Panel Functions

Details on Fan Speed, Power, Mode, Temperature Setting, and Timer operations.

Self-Diagnosis

Error Indication and Codes

Explains the Operation LED and lists fault codes for electrical and manual controls.

Additional Controls

Front Grille Access and Switches

Guide to removing the front grille and using additional control switches.

Temperature Limiting Settings

How to set cooling and heating temperature limits for energy saving.

Disassembly Instructions

Mechanical Parts

Procedures for disassembling front grille and control box.

Air Handling Parts

Steps for removing electric heater, fans (cross flow, axial), and shroud.

Electrical Parts

Instructions for removing motors, compressor, capacitor, power cord, and PCB.

Refrigeration Cycle

Condenser, Evaporator, Capillary Tube

Procedures for removing key refrigeration components.

Installation

Unit Installation Overview

General instructions for installing the air conditioner unit.

Wall Sleeve Installation

Guidelines for wall case data, preparation, and unit placement.

Unit Installation Procedure

Procedure for sliding the unit into the wall sleeve and securing it.

Electrical Requirements

Electrical Data and Receptacles

Specifications for electrical data including 208/230V receptacle configurations.

Electrical Safety Precautions

Important grounding instructions and safety measures for electrical installation.

Field Installed Accessories

Control Panel and Condensate Kits

Instructions for installing key lock, condensate disposal pump, and drain kits.

Grilles, Leveling Legs, and Wiring

Guides for installing grilles, leveling legs, hard wire kit, and subbase.

Fuse Holder and Remote Escutcheon Kits

Steps for installing fuse holder and remote escutcheon kits.

Troubleshooting Guide

Unit Dimensions and Piping

External dimensions and a diagram of the refrigeration piping system.

Cooling Ineffectiveness Troubleshooting

Guides on diagnosing issues when the unit is running but cooling is poor.

Starting Failure Troubleshooting

Flowchart for diagnosing issues when the unit fails to start.

Fan Motor Troubleshooting

Common complaints and remedies for fan motor not running or running intermittently.

Compressor and Noise Troubleshooting

Remedies for compressor not running, cycles on overload, and excessive noise.

Piping Diagrams

Schematic Diagram

Exploded View