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LG multi V PLUS Service Manual

LG multi V PLUS
373 pages
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System
SERVICE MANUAL
System
Air Conditioner
SERVICE MANUAL
LG
MODELS: LRUV/LRUN Series
LRNV/LRNN Series
website http://www.lgservice.com
CAUTION
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
P/No.: 3828A24006A
Printed in Korea
After reading this manual, keep it in a place easily accessible to the user for future reference.

Table of Contents

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LG multi V PLUS Specifications

General IconGeneral
RefrigerantR410A
Energy Efficiency Ratio (EER)Varies by model
Seasonal Energy Efficiency Ratio (SEER)Varies by model
Noise LevelVaries by model
Indoor UnitsVaries by type and capacity
Outdoor Unit DimensionsVaries by model
Indoor Unit DimensionsVaries by model
WeightVaries by model
FeaturesInverter

Summary

Service Manual

Safety Precautions

Installation Safety

General installation safety guidelines including grounding and dedicated circuits.

Operation Safety

Safety measures for operation, covering power cords, outlets, and water hazards.

General Information

Model Names

Details on various indoor and outdoor unit model names.

External Appearance

Visual description of indoor and outdoor unit appearances.

Model Names

Indoor Unit Model Names

Model names for various indoor unit types like Wall Mounted, ART COOL, Ceiling Cassette, etc.

Outdoor Unit Model Names

Model names for outdoor units categorized by HP and power supply.

External Appearance

Indoor Unit External Appearance

External appearance details for different indoor unit types like Ceiling Cassette, Wall Mounted, ART COOL, etc.

Outdoor Unit External Appearance

Lists various outdoor unit models and their corresponding HP capacities.

Combination of Outdoor Units

Nomenclature

Indoor Unit Nomenclature

Explanation of the model name structure for indoor units.

Outdoor Unit Nomenclature

Explanation of the model name structure for outdoor units.

Outdoor Units Information

Cooling Only Outdoor Unit Specifications

Specifications for outdoor units (Product Charge, Net Weight, Dimensions, Pipe Connections) for cooling only.

Heat Pump Outdoor Unit Specifications

Specifications for outdoor units (Product Charge, Net Weight, Dimensions, Pipe Connections) for heat pump models.

Indoor Units

Ceiling Mounted Cassette Type (1Way)

1-Way Ceiling Cassette Specifications

Technical specifications for 1-way ceiling cassette indoor units.

1-Way Ceiling Cassette 50Hz Specifications

Specifications for 50Hz cooling-only models.

1-Way Ceiling Cassette 50Hz Heat Pump Specifications

Specifications for 50Hz heat pump models.

1-Way Ceiling Cassette 60Hz Specifications

Specifications for 60Hz cooling-only models.

1-Way Ceiling Cassette 60Hz Heat Pump Specifications

Specifications for 60Hz heat pump models.

Functions

Indoor Unit Functions

Lists various functions of the indoor unit, such as Auto Restart, Low Noise, Long Life Filter.

Operation Details

Main Control Functions

Details on main control functions like Time Delay Safety Control, Soft-Dry Operation, and Cooling Mode Operation.

Heating Mode Operation Details

Explains the operation logic for heating mode based on temperature settings.

Dimensional Drawings

Piping Diagrams

Wiring Diagrams

Ceiling Mounted Cassette Type (4Way)

4-Way Ceiling Cassette Specifications

Technical specifications for 4-way ceiling cassette indoor units.

4-Way Ceiling Cassette 50Hz Specifications

Specifications for 50Hz cooling-only models.

4-Way Ceiling Cassette 50Hz Heat Pump Specifications

Specifications for 50Hz heat pump models.

4-Way Ceiling Cassette 60Hz Specifications

Specifications for 60Hz cooling-only models.

4-Way Ceiling Cassette 60Hz Heat Pump Specifications

Specifications for 60Hz heat pump models.

Functions

Indoor Unit Functions

Lists functions of the indoor unit like Auto Restart, Natural Air Control, Airflow Direction Control.

Operation Details

Main Unit Function and Display

Explains the meaning of Operation Indicator, Sleep Timer Indicator, Timer Indicator, Defrost Indicator.

Cooling Mode Operation Details

Explains operation for Cooling Mode.

Healthy Dehumidification Mode Details

Details on the Healthy Dehumidification Mode operation logic.

Heating Mode Operation Details

Explains the operation logic for heating mode based on temperature settings.

Dimensional Drawings

Piping Diagrams

Wiring Diagrams

Ceiling Concealed Duct Type (High static)

High Static Concealed Duct Specifications

Technical specifications for high static concealed duct indoor units.

High Static Concealed Duct 50Hz Specifications

Specifications for 50Hz cooling-only models.

High Static Concealed Duct 50Hz Heat Pump Specifications

Specifications for 50Hz heat pump models.

High Static Concealed Duct 60Hz Specifications

Specifications for 60Hz cooling-only models.

High Static Concealed Duct 60Hz Heat Pump Specifications

Specifications for 60Hz heat pump models.

Functions

Indoor Unit Functions

Lists functions of the indoor unit like Auto Restart, Natural Air Control, Airflow Direction Control.

Operation Details

Main Unit Function and Display

Explains the meaning of Operation Indicator, Sleep Timer Indicator, Timer Indicator, Defrost Indicator.

Cooling Mode Operation Details

Explains operation for Cooling Mode.

Healthy Dehumidification Mode Details

Details on the Healthy Dehumidification Mode operation logic.

Heating Mode Operation Details

Explains the operation logic for heating mode based on temperature settings.

Fuzzy Operation Details

Explains Fuzzy Operation logic for Cooling, Dehumidification, and Heating modes.

Forced Operation Details

Operation procedures when the remote control cannot be used.

Dimensional Drawings

Piping Diagrams

Wiring Diagrams

Disassembly of the parts

Grille Removal from Chassis

Steps for removing the grille from the chassis.

Control Box Removal

Instructions for removing the control box and its wires.

Evaporator Removal

Steps to remove the evaporator and its barrier assembly.

Cross-Flow Fan and Motor Removal

Instructions for removing the cross-flow fan and fan motor.

Wall Mounted Type

Wall Mounted Type Specifications

Technical specifications for wall-mounted indoor units.

Wall Mounted Type 50Hz Specifications

Specifications for 50Hz cooling-only models.

Wall Mounted Type 50Hz Heat Pump Specifications

Specifications for 50Hz heat pump models.

Wall Mounted Type 60Hz Specifications

Specifications for 60Hz cooling-only models.

Wall Mounted Type 60Hz Heat Pump Specifications

Specifications for 60Hz heat pump models.

Functions

Indoor Unit Functions

Lists functions like Soft Dry Operation, Sleep Mode Auto Control, Natural Air Control.

Operation Details

Main Unit Function and Display

Explains the meaning of Operation Indicator, Sleep Timer Indicator, Timer Indicator, Defrost Indicator.

Cooling Mode Operation Details

Explains operation for Cooling Mode.

Healthy Dehumidification Mode Details

Details on the Healthy Dehumidification Mode operation logic.

Heating Mode Operation Details

Explains the operation logic for heating mode based on temperature settings.

Fuzzy Operation Details

Explains Fuzzy Operation logic for Cooling, Dehumidification, and Heating modes.

Forced Operation Details

Operation procedures when the remote control cannot be used.

Display Function

Dimensional Drawings

Piping Diagrams

Wiring Diagrams

Disassembly of the parts

Grille Removal from Chassis

Steps for removing the grille from the chassis.

Control Box Removal

Instructions for removing the control box.

Evaporator Removal

Steps to remove the evaporator.

Cross-Flow Fan and Motor Removal

Instructions for removing the cross-flow fan and fan motor.

Art Cool Type

Art Cool Type Specification

Technical specifications for Art Cool Type indoor units.

Art Cool Type 50Hz Specifications

Specifications for 50Hz cooling-only models.

Art Cool Type 50Hz Heat Pump Specifications

Specifications for 50Hz heat pump models.

Art Cool Type 60Hz Specifications

Specifications for 60Hz cooling-only models.

Art Cool Type 60Hz Heat Pump Specifications

Specifications for 60Hz heat pump models.

Functions

Indoor Unit Functions

Lists functions like Soft Dry Operation, Sleep Mode Auto Control, Natural Air Control.

Operation Details

Main Unit Function and Display

Explains the meaning of Operation Indicator, Sleep Timer Indicator, Timer Indicator, Defrost Indicator.

Cooling Mode Operation Details

Explains operation for Cooling Mode.

Healthy Dehumidification Mode Details

Details on the Healthy Dehumidification Mode operation logic.

Heating Mode Operation Details

Explains the operation logic for heating mode based on temperature settings.

Fuzzy Operation Details

Explains Fuzzy Operation logic for Cooling, Dehumidification, and Heating modes.

Forced Operation Details

Operation procedures when the remote control cannot be used.

Display Function

Dimensional Drawings

Piping Diagrams

Wiring Diagrams

Disassembly of the parts

Grille Removal from Chassis

Steps for removing the grille from the chassis.

Control Box Removal

Instructions for removing the control box.

Evaporator Removal

Steps to remove the evaporator.

Turbo Fan and Motor Removal

Instructions for removing the turbo fan and motor.

Outdoor unit

LRUV/LRUN Series

Outdoor Unit Specifications

Technical specifications for LRUV/LRUN series outdoor units.

Outdoor Unit 50Hz Specifications

Specifications for 380V, 50Hz cooling-only outdoor units.

Outdoor Unit 50Hz Heat Pump Specifications

Specifications for 380V, 50Hz heat pump outdoor units.

Outdoor Unit 60Hz Specifications

Specifications for 380V, 60Hz cooling-only outdoor units.

Outdoor Unit 60Hz Heat Pump Specifications

Specifications for 380V, 60Hz heat pump outdoor units.

Function

Basic Control Functions

Details normal operation, compressor control, and LEV control.

Special Control Functions

Details oil return control and fan control.

Protection Control Functions

Covers pressure, discharge temperature, and inverter protection controls.

Other Control Functions

Details initial setup steps like communication check and auto addressing.

Dimensions

1 Outdoor Unit (Half Size) Dimensions

Provides dimensional data (W, H, D, L1-L7) for 1 outdoor unit (half size).

1 Outdoor Unit Dimensions

Provides dimensional data (W, H, D, L1-L7) for 1 outdoor unit.

2 Outdoor Unit Dimensions

Provides dimensional data and installation notes for 2 outdoor units.

3 Outdoor Unit Dimensions

Provides dimensional data and installation notes for 3 outdoor units.

Piping Diagrams

Refrigerant Flow for Cooling Operation

Shows refrigerant flow diagram for cooling operation.

Refrigerant Flow for Heating Operation

Shows refrigerant flow diagram for heating operation.

Refrigerant Flow for Oil Return/Defrost Operation

Shows refrigerant flow diagram for oil return/defrost operation.

Cooling Operation (Series)

Shows refrigerant flow diagram for cooling operation in series configuration.

Heating Operation (Series)

Shows refrigerant flow diagram for heating operation in series configuration.

Oil Return/Defrost Operation (Series)

Shows refrigerant flow diagram for oil return/defrost operation in series configuration.

Wiring Diagrams

50Hz(380V) Main Outdoor Unit Wiring Diagrams

Wiring diagram for 380V, 50Hz main outdoor units (5-8 HP).

50Hz(380V) Main Outdoor Unit Wiring Diagrams

Wiring diagram for 380V, 50Hz main outdoor units (8-14 HP).

60Hz(380V) Main Outdoor Unit Wiring Diagrams

Wiring diagram for 380V, 60Hz main outdoor units (16-40 HP).

60Hz(380V) Main Outdoor Unit Wiring Diagrams

Wiring diagram for 380V, 60Hz main outdoor units (5-8 HP).

60Hz(380V) Main Outdoor Unit Wiring Diagrams

Wiring diagram for 380V, 60Hz main outdoor units (8-14 HP).

60Hz(380V) Main Outdoor Unit Wiring Diagrams

Wiring diagram for 380V, 60Hz main outdoor units (16-40 HP).

50, 60Hz Sub Outdoor Unit Wiring Diagrams

Wiring diagram for sub outdoor units (16-40 HP) at 50/60Hz.

60Hz(220V) Main Outdoor Unit Wiring Diagrams

Wiring diagram for 220V, 60Hz main outdoor units (8-12 HP).

Inverter Board Connector Specifications

Connector specifications for the Inverter Board.

Main Board Connector Specifications

Connector specifications for the Main Board.

Sub Board Connector Specifications

Connector specifications for the Sub Board.

Inverter Board Layout

Image showing the layout of components and connectors on the Inverter Board.

Main Board Layout

Image showing the layout of components and connectors on the Main Board.

Sub Board Layout

Image showing the layout of components and connectors on the Sub Board.

Trouble shooting guide

Phenomena from Main Component Failure

Lists phenomena related to main component failures, causes, and checks.

Checking Method for Key Components

Methods for checking key components like Compressor, Fan Motor, LEV, etc.

Self-diagnosis Function

Information on the self-diagnosis function and error codes.

Appendix

Position of the LED01Y in Inverter Board

Resistance-Temperature Table

Voltage-Pressure Table

Exploded View & Replacement Parts List

TC Model Exploded View

Exploded view diagram for TC model indoor unit with part numbers.

TE Model Exploded View

Exploded view diagram for TE model indoor unit.

BH Model Exploded View

Exploded view diagram for BH model indoor unit.

BG Model Exploded View

Exploded view diagram for BG model indoor unit.

BE Model Exploded View

Exploded view diagram for BE model indoor unit.

BT Model Exploded View

Exploded view diagram for BT model indoor unit.

SU Model Exploded View

Exploded view diagram for SU model indoor unit.

ST Model Exploded View

Exploded view diagram for ST model indoor unit.

SV Model Exploded View

Exploded view diagram for SV model indoor unit.

LRUV(C) (16~40HP) Series Outdoor Unit Exploded View

Exploded view of LRUV(C) outdoor units (16-40HP) with part numbers.

LRUN(8~14HP) Series Outdoor Unit Exploded View

Exploded view of LRUN outdoor units (8-14HP) with part numbers.

Outdoor Unit Main and Sub Unit Exploded View

Exploded view of Main Unit and Sub Unit components.

LRUV1008TS0 Outdoor Unit Parts List

Exploded view and parts list for LRUV1008TS0 outdoor unit.

LRUN1008T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1008T0 outdoor unit.

LRUN1009T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1009T0 outdoor unit.

LRUN1208T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1208T0 outdoor unit.

LRUN1208T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1208T0 outdoor unit.

LRUN(H) (16~40HP) Series Outdoor Unit Exploded View

Exploded view of LRUN(H) outdoor units (16-40HP) with part numbers.

LRUV1008TS0 Outdoor Unit Parts List

Exploded view and parts list for LRUV1008TS0 outdoor unit.

LRUN1008T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1008T0 outdoor unit.

LRUN1009T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1009T0 outdoor unit.

LRUN1208T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1208T0 outdoor unit.

LRUN1208T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1208T0 outdoor unit.

LRUN120BT0 Outdoor Unit Parts List

Exploded view and parts list for LRUN120BT0 outdoor unit.

LRUN1408T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1408T0 outdoor unit.

LRUV(C) (16~40HP) Series Outdoor Unit Parts List

Exploded view of LRUV(C) outdoor units (16-40HP) with part numbers.

LRUH1008TS0 Outdoor Unit Parts List

Exploded view and parts list for LRUH1008TS0 outdoor unit.

LRUH1008TS0 Outdoor Unit Parts List

Exploded view and parts list for LRUH1008TS0 outdoor unit.

LRUH1008TS0 Outdoor Unit Parts List

Exploded view and parts list for LRUH1008TS0 outdoor unit.

LRUN1008T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1008T0 outdoor unit.

LRUN1009T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1009T0 outdoor unit.

LRUN(H) (16~40HP) Series Outdoor Unit Parts List

Exploded view of LRUN(H) outdoor units (16-40HP) with part numbers.

LRUV1008TS0 Outdoor Unit Parts List

Exploded view and parts list for LRUV1008TS0 outdoor unit.

LRUN1208T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1208T0 outdoor unit.

LRUN1208T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1208T0 outdoor unit.

LRUN1408T0 Outdoor Unit Parts List

Exploded view and parts list for LRUN1408T0 outdoor unit.

LRUH1008TS0 Outdoor Unit Parts List

Exploded view and parts list for LRUH1008TS0 outdoor unit.

LRUH1008TS0 Outdoor Unit Parts List

Exploded view and parts list for LRUH1008TS0 outdoor unit.

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