LG LS-L1210CL - User Manual

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SERVICE MANUAL

Room Air Conditioner

MODEL : LS-J0910CL / HL

LS-L1210CL / HL

LS-K1830CL / HL

LS-K2430CL / HL

Questions and Answers:

L
Linda MarshallAug 6, 2025
Why LG LS-L1210CL Air Conditioner is not operating with the remote controller?
- C
  Cassie CabreraAug 6, 2025
  The LG Air Conditioner might not be operating with the remote controller due to several reasons: * The remote controller itself may be the cause. Check the contact of the CN-DISP connector. * If the mark is displayed on the LCD screen, replace the battery. * Other parts besides the remote controller could be the issue. In this case, check the DISP PWB Assembly and ensure the voltage between CN DISP is DC +5V. * Also, inspect the connecting circuit between the remote controller MICOM (No. (30)) - R17(2?) - IR LED - Q1 - R16(2.2K?).
J
Janet BrownAug 20, 2025
What to do if LG LS-L1210CL does not operate at all?
- A
  Alicia OwensAug 20, 2025
  If your LG Air Conditioner isn't operating at all, try the following: * Check the voltage of the power supply. It should be around AC 208V/AC230V, 60Hz. * Inspect each load, including the Indoor/Outdoor Fan Motor, Compressor, and Stepping Motor. Also, check the fuse condition of the related connector, including the connecting cable of the Indoor/Outdoor Unit, and the connection housing for proper contact.

LG LS-L1210CL Specifications

General

Brand	LG
Model	LS-L1210CL
Category	Air Conditioner
Language	English

Summary

Functions

Time Delay & Fan Speed Controls

Describes time delay safety and fan speed settings.

Operation Indicators & Modes

Details LED indicators and operating modes.

Heating & Swing Controls

Covers defrost, hot-start, and chaos swing features.

Remote Controller Functions

ON;OFF, Timer & Time Settings

Explains timer and time setting operations.

Mode, Fan Speed & Temp. Settings

Covers mode selection, fan speed, and temp. adjustments.

Sleep, Chaos Swing & Airflow Controls

Describes sleep, chaos swing, and airflow direction.

Product Specifications

Cooling Only Specifications

Lists technical specs for cooling-only models.

Cooling & Heating Specifications

Lists technical specs for cooling & heating models.

Dimensions

Indoor Unit Dimensions

Provides dimensions for the indoor unit.

Outdoor Unit Dimensions (9 K, 12 K)

Lists dimensions for 9K/12K outdoor units.

Outdoor Unit Dimensions (18 K, 24 K)

Lists dimensions for 18K/24K outdoor units.

Refrigeration Cycle Diagram

Cooling Only Models Cycle

Diagram and specs for cooling-only cycle.

Cooling & Heating Models Cycle

Diagram and specs for cooling/heating cycle.

Wiring Diagrams

Indoor Unit Wiring Diagram

Shows internal wiring for the indoor unit.

Outdoor Unit Wiring Diagrams

Illustrates outdoor unit wiring for different models.

Operation Details

Main Control Functions

Explains time delay, chaos swing, and cooling operation.

Auto Operation Modes

Details auto operation for cooling, heating and dehumidification.

Sleep Mode Operation

Covers sleep mode for cooling and heating.

Forced Operation and Auto Restart

Describes forced operation and auto restart functions.

Display and Self-Diagnosis

Display Function and Indicators

Describes unit indicators and display functions.

Self-diagnosis Function

Explains error codes and diagnosis procedures.

Installation Procedures

Safety, Warnings, and Precautions

Outlines essential safety measures for installation.

Location Selection and Parts

Guides on choosing the best location and installation parts.

Mounting and Hole Drilling

Covers installation plate mounting and wall drilling.

Piping Work and Connections

Details flaring, tubing, and pipe connection procedures.

Cable Connection and Wiring

Details connecting indoor and outdoor unit cables.

Drainage, Air Purging, and Evacuation

Covers drainage, air purging, and evacuation steps.

Test Running and Pump Down

Explains test running and pump down procedures.

Indoor Unit Disassembly

Grille, Sensor & Control Box Removal

Steps for removing indoor unit grille, sensor, and control box.

Evaporator & Fan Removal

Details on removing evaporator and cross-flow fan.

18 K;24 K Model Disassembly Steps

Specific disassembly steps for 18K/24K models.

Troubleshooting Guide

Refrigeration Cycle Analysis

Analyzes issues based on temp. difference and pressure.

Product Operation Troubleshooting

Addresses issues with the product not operating.

Component Drive Troubleshooting

Troubleshoots issues with compressor/fan drive.

Louver and Fan Operation Issues

Troubleshoots vertical louver and indoor fan operation.

Connection and Communication Errors

Details phenomena and solutions for connection errors.

Connector Voltage Specifications

Lists voltage values for various connectors.

Electronic Control Device

Indoor Main PWB Assy

Information on the indoor unit's main printed circuit board.

Outdoor Main PWB Assy

Information on the outdoor unit's main printed circuit board.

Display PWB Assy

Details of the display printed circuit board assembly.

Schematic Diagrams

Indoor Unit Schematic Diagram

Electrical schematic for the indoor unit.

Outdoor Unit Schematic Diagram

Electrical schematic for the outdoor unit.

Exploded View and Parts List

Indoor Unit (9 K) Exploded View & Parts List

Visual breakdown and part numbers for 9K indoor unit.

Indoor Unit (12 K) Exploded View & Parts List

Visual breakdown and part numbers for 12K indoor unit.

Indoor Unit (18 K, 24 K) Exploded View & Parts List

Visual breakdown and part numbers for 18K/24K indoor units.

Outdoor Unit (9 K, 12 K) Exploded View & Parts List

Visual breakdown and part numbers for 9K/12K outdoor units.

Outdoor Unit (18 K) Exploded View & Parts List

Visual breakdown and part numbers for 18K outdoor unit.

Outdoor Unit (24 K) Exploded View & Parts List

Visual breakdown and part numbers for 24K outdoor unit.

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