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LG LS-P0960HL User Manual

LG LS-P0960HL
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-P0960HL Specifications

General IconGeneral
BrandLG
ModelLS-P0960HL
CategoryAir Conditioner
LanguageEnglish

Summary

Room Air Conditioner Service Manual

Functions

Indoor Unit Operational Functions

Details on various operational functions of the indoor unit.

Remote Controller Operation Guide

Explanation of buttons and operational modes of the remote control.

Product Specifications

Cooling Only Models Specifications

Technical specifications for air conditioner models designed for cooling only.

Cooling & Heating Models Specifications

Technical specifications for air conditioner models supporting both cooling and heating.

Unit Dimensions

Indoor Unit Dimensions

Physical dimensions and measurements for the indoor unit of the air conditioner.

Outdoor Unit Dimensions

Physical dimensions and measurements for the outdoor unit of the air conditioner.

Refrigeration Cycle Diagram

Cycle Components and Pipe Size Details

Visual representation of the AC's refrigeration cycle and associated pipe specifications.

Wiring Diagrams

Indoor and Outdoor Unit Wiring Schematics

Electrical wiring schematics for both indoor and outdoor components of the unit.

PCB Assembly Wiring Schematics

Detailed wiring diagrams for main and display PCB assemblies.

Operation Details

Core Control Functions (Time Delay, Airflow)

Explanation of time delay, airflow control, and cooling mode operations.

Sleep Mode Operation Details

Details on sleep mode operations and graphical representations of unit cycles.

Auto Operation Modes (Cooling)

Procedures and conditions for auto operation in cooling mode.

Auto Operation Modes (Soft Dry, Heating)

Operational details for auto modes in soft dry and heating functions.

Natural Wind (CHAOS Logic) Function

Description of the 'CHAOS logic' for natural wind simulation in fan operation.

Heating & Hot-Start Operation Details

Information on heating mode operation and hot-start control mechanisms.

Deice Control Mechanism

Explanation of the deicing control process based on temperature sensing.

Soft Dry & Forced Operation Modes

Details on soft dry operation and manual forced operation modes.

Display & Self-Diagnosis Functions

Unit Indicator Lights and Display Functions

Explanation of various indicators and display functions on the unit.

Self-Diagnosis Error Detection Features

Details on evaporator pipe frosting protection and thermistor error detection.

Installation Guide

Unit Location and Piping Requirements

Guidelines for selecting the best location and understanding piping length/elevation limits.

Indoor Unit Installation Plate Mounting

Steps for mounting the indoor unit's installation plate and drilling piping holes.

Piping Preparation and Flaring

Instructions for cutting, deburring, and flaring copper pipes for installation.

Indoor Unit Tubing and Cable Connections

Procedures for connecting indoor tubing, drain hose, and electrical cables.

Indoor Unit Mounting Procedure

Final steps for hooking and connecting the indoor unit to the installation plate.

Routing for Left-Side Piping Installations

Instructions for routing indoor tubing and cables for left-side piping installations.

Indoor Piping Insulation and Connection

Connecting indoor unit pipings and wrapping connecting portions with insulation.

Tubing Holder and Unit Securing

Securing pipings with tubing holders and mounting the indoor unit.

Specific Model Piping Connection Steps

Detailed connection steps for specific models, including plate removal and pipe routing.

Tubing, Cable, and Hose Management

Bending and taping tubing, cables, and drain hoses for proper installation.

Left Piping Connection Details

Routing and connecting pipes, drain hose, and cables for left rear piping.

Final Insulation and Unit Placement

Wrapping insulation and final mounting of the indoor unit onto the installation plate.

Outdoor Unit Piping and Cable Connections

Connecting pipings and cables to the outdoor unit's terminal block.

Indoor Unit Drainage Verification

Procedures for checking the indoor unit's drainage system after installation.

Indoor Cable Connection and Grille Attachment

Connecting indoor unit cables and re-attaching the front grille.

Outdoor Piping Securing and Sealing

Forming and securing outdoor unit pipings, and sealing openings to prevent water entry.

Air Purging Procedure

Step-by-Step Air Removal Process

Detailed process for removing air from the refrigeration cycle using valves.

Gas Leak Detection Post-Purging

Methods for checking gas leakage after initial purging and connection.

Test Running and Performance

Power Connection and Remote Setup

Connecting power supply and preparing the remote control for initial operation.

Unit Performance Temperature Check

Evaluating the unit's performance by measuring air temperatures during operation.

Operation Guide (Cooling Models)

Remote Control Layout and Functions (Cooling)

Overview and descriptions of buttons and display elements on the cooling model remote control.

Operation Guide (Heat Pump Models)

Remote Control Layout and Functions (Heat Pump)

Overview and descriptions of buttons and display elements on the heat pump model remote control.

Indoor Unit Disassembly Guide

Removing the Indoor Unit Front Grille

Steps to safely remove the front grille of the indoor unit for access.

Accessing Internal Components (Sensors, Motor)

Procedures for removing sensors, housing, and motor conductors.

Control Box and Discharge Grille Removal

Instructions for detaching the control box and the discharge grille.

Evaporator and Fan Motor Removal

Steps for removing the evaporator assembly and the fan motor.

2-way and 3-way Valve Operations

Valve Positions for Different Work Stages

Table detailing valve positions for shipping, purging, operation, and servicing.

Air Purging Steps

Detailed Air Purging Procedure

Comprehensive procedure for purging air from the refrigerant system with required tools.

Pumping Down Procedure

System Pumping Down Steps

Instructions for pumping down the system before refrigerant handling.

Re-installation Air Purging

Air Purging for Unit Re-installation

Procedure for purging air when the unit is being re-installed.

Refrigerant Balancing

Balancing Refrigerant with Valves

Steps to balance refrigerant levels using the system valves.

Evacuation Process

Vacuum Pump Evacuation Steps

Procedure for creating a vacuum in the refrigeration system using a vacuum pump.

Gas Charging Procedure

Refrigerant Charging Steps

Instructions for charging the system with the correct amount of refrigerant.

Refrigeration Cycle Troubleshooting

Temperature and Current Analysis

Analyzing intake/discharge air temperature differences and operating current for issues.

Pressure and Temperature Diagnosis

Checking suction pressure and temperature against normal values to diagnose trouble.

Electronic Parts Troubleshooting

Unit Power Failure Diagnosis

Troubleshooting steps for when the air conditioner unit does not power on.

Fan Operation Failure Diagnosis

Flowchart for diagnosing issues related to the fan not operating.

Louver & Remote Control Failure Diagnosis

Troubleshooting guide for non-operational air direction louvers and remote controls.

Ineffective Heating Diagnosis

Diagnostic steps for when the heating function is not effective.

Forced Operation Failure Diagnosis

Troubleshooting steps for when the forced operation mode does not function.

PCB Assembly Information

Display PCB for S-Series Models

Information on the display PCB assembly for specific S-Series models.

Display PCB for P-Series Models

Information on the display PCB assembly for specific P-Series models.

Exploded View - Indoor Unit

Indoor Unit Component Diagram

Visual breakdown of the indoor unit's parts and their assembly.

Indoor Unit Component Diagram (P-Series)

Visual breakdown of indoor unit parts for P-Series models.

Parts List - S-Series Models

S0960CL/S1260CL Parts

Comprehensive list of replacement parts for specific S-Series models.

S1120CL/S1420CL/S1421CL Parts

Comprehensive list of replacement parts for specific S-Series models.

P0760CL/P0960CL Parts

Comprehensive list of replacement parts for specific P-Series models.

Exploded View - Outdoor Unit

Outdoor Unit Component Diagram

Visual breakdown of the outdoor unit's parts and their assembly.

Parts List - Mixed P/S Series

P0760CL/P0960CL/S0960CL/S1260CL Parts

Replacement parts list for combined P and S-Series models.

P0760HL/P0960HL/S0960HL/S1260HL Parts

Replacement parts list for combined P and S-Series heat pump models.

P0820CL/S1120CL Parts

Replacement parts list for specific P and S-Series models.

S1120CL/S1420CL/S1421CL Parts

Replacement parts list for specific S-Series models.

P0760HL/P0960HL Parts

Replacement parts list for specific P-Series heat pump models.

S0960HL/S1260HL Parts

Replacement parts list for specific S-Series heat pump models.

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