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LG LBNK3660BL User Manual

LG LBNK3660BL
55 pages
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Ceiling Duct Air Conditioner
SVC MANUAL(Exploded View)
MODEL : LBNS3061BL LBUS3061BL
LBNS3062BL LBUS3062BL
LBNK3660BL LBUK3660BL
LBNK3661BL LBUK3662BL
LBNK4261BL LBUK4882BL
LBNK4881BL LBUM7280BL
LBNK4882BL LBUM9080BL
LBNH608RSS1 LBUM1081BL
LBNM7280BL LBNM7281BL
LBNM9080BL LBNM9081BL
LBNM1081BL
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
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LG LBNK3660BL Specifications

General IconGeneral
BrandLG
ModelLBNK3660BL
CategoryAir Conditioner
LanguageEnglish

Summary

Functions Overview

Remote Controller Operation ON/OFF

Controls the unit's power status via the remote controller.

Room Temperature Sensing and Control

Utilizes a thermistor to maintain room temperature based on set points.

Time Delay Safety Control

Inhibits restarting for approximately 3 minutes for compressor protection.

Indoor Fan Speed Control Options

Allows selection of fan speeds: High, Medium, and Low.

Auto Restart and Auto Operation

Restarts unit after power failure; automatically sets mode/temp.

Heating Mode Functions: Defrost and Hot-Start

Manages defrost cycles and ensures hot start after defrost.

Optional Control Features

Includes optional drain pump, central, group, and RF controls.

Remote Controller Interface and Functions

Remote Controller: Operation Modes

Allows selection of Cooling, Heating, Soft Dry, and Auto modes.

Remote Controller: Fan Speed and Temperature Settings

Enables adjustment of fan speed and setting desired temperatures.

Remote Controller: Timer and Weekly Program

Provides functionality for setting timers and weekly operation schedules.

Product Specifications (Cooling & Heating)

Dimensions: Indoor and Outdoor Units

Indoor Unit Dimensions Table

Provides detailed dimensional data for various indoor unit models.

Outdoor Unit Dimensions Table

Lists dimensional specifications for different outdoor unit types.

Refrigeration Cycle Diagram

Wiring Diagrams by Model Series

Wiring Diagram: LB-S3061/3062BL Series Indoor/Outdoor

Illustrates indoor and outdoor unit wiring for the LB-S3061/3062BL models.

Wiring Diagram: LB-K3661BL Series Indoor/Outdoor

Details indoor and outdoor unit wiring for the LB-K3661BL model.

Wiring Diagram: LB-K4260BL Series Indoor/Outdoor

Provides indoor and outdoor unit wiring diagrams for LB-K4260BL.

Wiring Diagram: LB-K4880/4882BL Series Indoor/Outdoor

Wiring diagrams for indoor and outdoor units of LB-K4880/4882BL.

Wiring Diagram: LB-H608RSS1 Indoor/Outdoor

Wiring diagrams for the indoor and outdoor units of the LB-H608RSS1.

Wiring Diagram: LB-M7280BL Series Indoor/Outdoor

Wiring diagrams for indoor and outdoor units of the LB-M7280BL series.

Wiring Diagram: LB-M9080BL/LB-M1081BL Series Indoor/Outdoor

Wiring diagrams for indoor/outdoor units of LB-M9080BL/LB-M1081BL.

Operation Details and Control Logic

Time Delay and Soft-Dry Operation

Details safety time delays and the soft-dry fan speed setting.

Cooling Mode Operation Logic

Describes unit operation based on intake air and set temperature.

Heating Mode Operation Logic

Details heating operation based on intake air and set temperature.

Hot-Start Control and Piping Temperature

Indoor fan behavior until evaporator piping reaches 31°C.

Defrost Control and Self-Diagnosis

Explains defrost conditions and error code display.

Installation Guidelines

Indoor Unit Location Selection

Guidelines for selecting the optimal location for the indoor unit.

Outdoor Unit Location Selection

Guidelines for selecting the optimal location for the outdoor unit.

Piping Length and Elevation Specifications

Specifies maximum piping length and elevation differences allowed.

Ceiling Dimensions and Mounting Bolt Locations

Details for ceiling mounting and suspension/console bolt placement.

Installation Location Considerations

Advice on suitable and unsuitable installation locations.

Remote Controller Installation and Preparation

Remote Controller Mounting Guidelines

Guidance on selecting placement and height for the remote controller.

Remote Controller Cord Routing

Instructions for properly routing the remote controller cable.

Wired Remote Control Installation Steps

Steps for disassembling and mounting the wired remote control.

Remote Control Battery Installation

Steps for correctly installing batteries in the remote control.

Connecting Cables and Electrical Wiring

Connecting Cables to Indoor Unit

Instructions for connecting wires to the indoor unit terminals.

Cable Clamping Procedures

Steps for securing power and connecting cables with clamps.

Circuit Breaker Capacity Requirements

Specifies circuit breaker ratings based on unit capacity.

Indoor and Outdoor Unit Wiring Connections

Details wiring connections and earthing for indoor/outdoor units.

Piping Connection, Preparation, and Vacuum Drying

Piping Preparation and Flaring Work

Steps for cutting, deburring, nut installation, and flaring pipes.

Piping Connection Procedure

Steps for connecting refrigerant pipes between indoor and outdoor units.

Vacuum Drying Procedure

Instructions for removing air and moisture from refrigerant lines.

Flare Nut Tightening Torque Specifications

Specifies the correct torque values for tightening flare nuts.

Installation Cautions and Insulation

Indoor Unit Declination for Drainage

Importance of unit declination for proper water drainage.

Drain Piping Gradient and U-Trap

Guidelines for maintaining correct gradient and using U-traps.

Thermal Insulation Requirements

General requirements for thermal insulation of components.

Refrigerant Pipe Insulation and Taping

Instructions for insulating and taping gas and liquid refrigerant pipes.

Piping Finishing and Test Running

Finishing Piping Work

Final steps for shaping and securing refrigerant pipes.

Test Run Precautions and Procedure

Essential safety and operational checks before and during test running.

Post-Installation Checklist Items

Items to verify after installation is complete, including air circulation and leaks.

Power Supply Connection and Performance Evaluation

Power Supply Connection Steps

Steps for connecting the unit to the main power supply with circuit breaker.

Performance Evaluation Checks

How to measure and verify unit performance after connection.

Optional Operation Modes

Two Thermistor System Operation

Details the three selectable modes for the dual thermistor system.

Group Control (Optional Wiring)

How to connect and operate multiple units as a group.

Refrigeration Cycle Installation and Servicing

Refrigerant Piping Installation

Detailed steps for connecting indoor and outdoor unit refrigerant piping.

Unit Disconnection for Moving

Steps for safely disconnecting the unit for relocation.

Gas Charging Procedure

Detailed steps for charging the system with refrigerant.

Cycle Troubleshooting Guide

Trouble Analysis: Temp Difference and Current

Analyzes issues based on temperature differences and operating current.

Checking Refrigeration Cycle Temp & Pressure

Verifies temperature and pressure readings in the refrigeration cycle.

Electronic Parts Troubleshooting

Troubleshooting: Unit Not Operating

Step-by-step guide for diagnosing why the unit does not operate.

Troubleshooting: Indoor Fan Not Operating

Diagnoses issues when the indoor fan fails to operate.

Troubleshooting: Ineffective Heating

Guides for resolving problems related to ineffective heating.

Troubleshooting: Wired Remote Controller Issues

Steps to diagnose and fix issues with the wired remote controller.

Electronic Control Device: Main PCB Assembly

Exploded View and Replacement Parts Lists

Indoor Unit Exploded View: LBNS3061BL

Exploded diagram and parts list for the LBNS3061BL indoor unit.

Indoor Unit Exploded View: LBNS3062BL/LBNK3661BL

Exploded diagram and parts list for LBNS3062BL/LBNK3661BL indoor units.

Indoor Unit Exploded View: LBNK4260BL Series

Exploded diagram and parts list for LBNK4260BL series indoor units.

Indoor Unit Exploded View: LBNH608RSS1

Exploded diagram and parts list for the LBNH608RSS1 indoor unit.

Indoor Unit Exploded View: LBUM7280BL

Exploded diagram and parts list for the LBUM7280BL indoor unit.

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