LG ACHH Series - User Manual

Air-cooled Inverter Scroll Chiller
SVC MANUAL
MODEL : ACHH Series
CAUTION
Before Servicing the unit, read the safety precautions in SVC manual.
Only for authorized service personnel.
CONFIDENTIAL
Copyright © 2018 LG Electronics Inc. All rights reserved. Only training and service purposes.

Summary

General Safety Information

Installation Safety Guidelines

Safety guidelines for unit installation, covering wiring, placement, and securing.

Operation Safety Guidelines

Safety guidelines for unit operation, covering handling, power, and general precautions.

Product Specifications

Unit Functions

Reliability Functions

Lists reliability features like sensors, protection, and delayed operations.

Convenience Functions

Lists convenience features like auto-re-start, remote control, and low noise.

Network Connectivity

Specifies network connectivity, such as ModBus.

Piping Diagrams

Wiring Diagrams

Exploded Parts View

Fan Assembly Parts

Exploded view of the fan assembly components.

Condenser Assembly Parts

Exploded view of the condenser assembly components.

Structure Parts View

Exploded view of structural components for units.

Cycle Parts View

Exploded view of cycle parts like compressors and heat exchangers.

Base & Control Box Parts

Exploded view of base and control box components for 1 Unit.

Control Box Internal Parts

Lists and shows components within the control box.

Component Failure Troubleshooting

Compressor Failure Issues

Details phenomena, causes, and troubleshooting for compressor failures.

Outdoor Fan Failure Issues

Details phenomena, causes, and troubleshooting for outdoor fan failures.

Outdoor EEV Failure Issues

Details phenomena, causes, and troubleshooting for outdoor EEV failures.

Error Codes and Diagnostics

Sensor Related Errors

Troubleshooting for temperature and pressure sensor errors (e.g., Error 01, 42, 43).

Communication Errors

Troubleshooting for communication issues between units and boards (e.g., Error 03, 05, 53).

Power and Voltage Errors

Troubleshooting for power supply and voltage related errors (e.g., Error 23, 25).

Compressor and Fan Motor Errors

Troubleshooting for compressor and fan motor related errors (e.g., Error 26, 29, 32).

PCB and EEPROM Errors

Troubleshooting for PCB and EEPROM related errors (e.g., Error 60, 87).

Valve and Other Component Errors

Troubleshooting for errors related to 4-way valves and other components.

Advanced Functions

Vacuum Mode Operation

Procedure for setting the vacuum mode function after service.

LG ACHH Series Specifications

General

Brand	LG
Model	ACHH Series
Category	Chiller
Language	English