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LG LS-S1260HL User Manual

LG LS-S1260HL
72 pages
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SERVICE MANUAL
Room Air Conditioner
MODEL : LS-P0760CL/P0760HL LS-P0820C
LS-P0960CL/P0960HL
LS-S0960CL/S0960HL LS-S1120C
LS-S1260CL/S1260HL
LS-S1420CL LS-S1421CL
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY
PRECAUTIONS” IN THIS MANUAL.

Questions and Answers:

LG LS-S1260HL Specifications

General IconGeneral
TypeSplit System
Cooling Capacity12000 BTU/h
Indoor Unit Weight9 kg
Outdoor Unit Weight30 kg
Power Supply220-240V, 50Hz

Summary

Room Air Conditioner Service Manual

Functions

Indoor Unit Operations

Covers ON/OFF, sensing, temp control, fan speed, indicators, and special modes.

Heating System Functions

Details Deice (defrost) and Hot-start controls for heating models.

Remote Controller Operations

Remote Control Buttons and Functions

Explains all buttons on the remote for mode selection, timing, fan speed, and settings.

Product Specifications

Cooling Only Specifications

Technical data for air conditioners operating in cooling mode only.

Product Specifications (Cooling & Heating)

Unit Dimensions

Indoor Unit Dimensions

Detailed physical measurements for the indoor air conditioner unit.

Unit Dimensions (Continued)

Outdoor Unit Dimensions

Detailed physical measurements for the outdoor air conditioner unit.

Refrigeration Cycle Diagram

Refrigerant Piping Specifications

Information on pipe size, maximum length, and elevation for refrigerant lines.

Wiring Diagrams

Model Specific Wiring Diagrams

Electrical connection diagrams tailored to different LG air conditioner models.

Detailed Operation Modes

Core Control and Airflow Functions

Explains time delay, airflow direction, cooling mode, and auto operation logic.

Detailed Operation Modes (Continued)

Heating, Sleep, and Special Modes

Details heating, hot-start, deice, soft dry, natural wind, and forced operation.

Indicators and Diagnostics

Unit Display Indicators

Explanation of LED indicators on the indoor unit for operation status.

Self-Diagnosis Functionality

Describes protection against frosting and thermistor error detection.

Installation Guide

Site Selection and Piping Preparation

Guidance on choosing the best location and preparing refrigerant piping.

Installation Guide (Continued)

Indoor Unit Connections

Steps for connecting indoor units, tubing, cables, and drain hoses.

Installation Guide (Continued)

Outdoor Unit Piping and Cable Connection

Procedures for connecting piping and electrical cables to the outdoor unit.

System Checks and Purging

Drainage System Check

Procedure to verify the indoor unit's drainage system functionality.

System Checks and Purging (Continued)

Air Purging Procedure

Steps to remove air and moisture from the refrigeration system.

Test Running and Performance Evaluation

Power Supply Connection

Instructions for connecting power and preparing for the first test run.

Performance Verification

How to measure and evaluate intake and discharge air temperatures.

Remote Control Operation

Cooling Model Remote Control Functions

Detailed explanation of remote control buttons for cooling mode.

Remote Control Operation (Continued)

Heat Pump Model Remote Control Functions

Detailed explanation of remote control buttons for heat pump mode.

Indoor Unit Disassembly

Grille and Sensor Removal

Steps to remove the front grille and internal sensors from the indoor unit.

Indoor Unit Disassembly (Continued)

Internal Component Removal

Procedures for disassembling the control box, evaporator, and fan motor.

Refrigerant System Valves and Procedures

2-way and 3-way Valve Operation

Guide on operating refrigerant valves for shipping, installation, and servicing.

Refrigerant System Valves and Procedures (Continued)

Refrigerant Handling Procedures

Steps for air purging, pumping down, evacuation, and gas charging.

Refrigeration Cycle Troubleshooting

Temperature and Current Analysis

Diagnosing issues based on intake/discharge temperature differences and operating current.

Pressure and Temperature Cycle Checks

Analyzing refrigeration cycle problems using suction pressure and temperature.

Electronic Component Troubleshooting

Unit Power and Main Board Troubleshooting

Diagnosing issues related to power input and the main PCB.

Electronic Component Troubleshooting (Continued)

Fan Motor and Control System Issues

Troubleshooting fan operation, louvers, remote control, and heating effectiveness.

Display PCB Assembly

Exploded View and Parts List

Indoor Unit Exploded Views

Illustrated breakdown of indoor unit components for model series S0960, S1120, S1260, S1420, S1421.

Exploded View and Parts List (Continued)

Outdoor Unit Exploded View

Illustrated breakdown of outdoor unit components.

Parts List: S Series Models (Part 1)

Parts List: S Series Models (Part 2)

Parts List: P Series Models

Parts List: Combined P/S Series Models

Parts List: Specific P/S Series Models

Parts List: Additional P/S Series Models

Parts List: Other P/S Series Models

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