Table of Contents
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WEBSITE http://biz.LGservice.com
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Room Air Conditioner
SERVICE MANUAL
MODEL : LS-J0762YL(AC)
LS-L1262YL(AC)
LS-Q096BUL(DC)
LS-R126CUL(DC)
LS-L12632L(AC)
CAUTION
-BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
-ONLY FOR AUTHORIZED SERVICE PERSONNEL.
http://www.LGEservice.com/techsup.html
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Table of Contents
Troubleshooting
Related Manuals for LG LS-L1262YL
Summarization of Contents
Indoor Unit Functions
Operation and Control Features
Covers power ON/OFF, temperature sensing, and room temperature control functions.
Fan, Airflow, and Special Modes
Details fan speed, auto controls, airflow, Plasma, Defrost, and Hot-start.
Outdoor Unit Functions
Temperature and Frequency Control
Explains compressor frequency management based on temperature and protection.
Motor and Valve Control
Details outdoor fan motor control, 4-way valve, and discharge pipe temp. control.
Remote Control Operations
Mode Selection and Settings
Covers operation mode, fan speed, temperature, and timer settings.
Special Function Buttons
Explains Jet Cool, Plasma, Power Save, and Chaos Swing functions.
Product Specifications
Capacities and Performance Data
Details cooling/heating capacities, air circulation, noise, input, and current.
Physical and Refrigerant Data
Lists dimensions, weight, refrigerant type, and service valve sizes.
Unit Dimensions
Indoor Unit Dimensions
Shows physical measurements and diagrams for the indoor unit.
Outdoor Unit Dimensions
Shows physical measurements and diagrams for the outdoor unit.
System Diagrams
Refrigeration Cycle Diagram
Illustrates the refrigerant flow during cooling and heating cycles.
Wiring Diagram
Details the electrical connections for indoor and outdoor units.
Operation Details and Indicators
Indoor Unit LED Display Functions
Explains the meaning and function of indoor unit LED indicators.
Power Display Operation
Describes how the power display indicates compressor operating frequency.
Protection Mechanisms
Covers frost, droplet, and overheating protection mechanisms.
Mode Operations
Cooling and Dehumidification Modes
Details operation in Cooling and Healthy Dehumidification modes.
Heating and Fuzzy Modes
Explains Heating mode and Fuzzy operation logic.
Specialized Modes
Covers Jet Cool, Jet Heat, and Chaos Swing modes.
Timer and Other Operations
Sleep Timer Operation
Details how sleep timer adjusts temperature in cooling and heating cycles.
Auto Restart and Forced Operation
Describes auto restart, forced operation, and trial run procedures.
Control and Protection Systems
Power Relay and Current Control
Outlines power relay activation and total current protection.
Peak Current and Overheating Protection
Details protection against DC peak current and overheating.
Defrosting Control
Explains the process for defrosting the outdoor unit in heating mode.
Installation Procedures
Location and Piping Requirements
Guides on selecting locations and understanding piping specifications.
Mounting and Wall Preparation
Details fixing the installation plate and drilling holes in the wall.
Piping Work and Connections
Explains flaring, pipe preparation, and connecting pipes.
Electrical Connections and Drainage
Indoor Unit Electrical Connections
Details connecting cables to the indoor unit and power cord specs.
Outdoor Unit Electrical Connections
Details connecting cables to the outdoor unit and power source precautions.
Drainage and Piping Arrangement
Covers drainage checks and piping arrangements for outdoor units.
Refrigerant System Service
Air Purging and Leak Testing
Details purging air and testing for refrigerant leaks.
Evacuation and Finishing
Explains system evacuation and final connection steps.
Test Running and Pump Down
Covers test runs, performance evaluation, and refrigerant pump down.
Operation and Disassembly
Remote Control Functions
Identifies and describes functions of each remote control button.
Indoor Unit Disassembly
Provides step-by-step instructions for disassembling the indoor unit.
Valve Operations and Refrigerant Handling
2-way, 3-way Valve Procedures
Details operations like purging, pumping down, and balancing refrigerant.
Evacuation and Gas Charging
Explains system evacuation and refrigerant gas charging processes.
Troubleshooting Guide
Cycle Analysis and Indicators
Guides on analyzing cycles, pressures, and self-diagnosis indicators.
General Diagnosis Procedure
Outlines the general procedure for diagnosing product issues.
Troubleshooting Specific Issues
No Operation and Remote Issues
Guides on troubleshooting no operation and remote control issues.
Drive System Faults
Guides on troubleshooting compressor, fan, and louver operation issues.
Outdoor Unit and Compressor Errors
Guides on troubleshooting outdoor unit non-operation and compressor errors.
Connector and Communication Faults
Lists connector problems and communication errors.
Electronic Control Device Details
Indoor PCB Assembly Diagrams
Shows diagrams of the indoor main PCB assembly.
Outdoor PCB Assembly Diagrams
Shows diagrams of the outdoor main PCB assembly.
Display Assembly Diagrams
Shows diagrams of the display assembly.
Schematic Diagrams
Indoor Unit Schematics
Provides electrical schematic diagrams for indoor units.
Outdoor Unit Schematics
Provides electrical schematic diagrams for outdoor units.
Parts Lists and Exploded Views
Indoor Unit Components
Shows exploded views and lists parts for indoor units.
Outdoor Unit Components
Shows exploded views and lists parts for outdoor units.
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