Haier AD18LS1ERA User Manual

Commercial Air Conditioning
SERVICE MANUAL
MULTI upgrade series Models
Indoor: AB09CS1ERA
AB12CS1ERA
AB18CS1ERA
AB24ES1ERA
AC12CS1ERA
AC18CS1ERA
AC24CS1ERA
AD09LS1ERA
AD12LS1ERA
AD18LS1ERA
AD24LS1ERA
Outdoor: 3U19FS1ERA
4U25HS1ERA
4U30HS1ERA
5U34HS1ERA
z DC inverter technology, high energy efficiency, higher EER A+, energy
saving for the user
z Universal indoor units for multi upgrade series, Unitary smart DC inverter
and HAIER DAC split inverter type
z High voltage communication, convenient wiring work
z Multiple control types
z 10℃ constant temperature control
z Universal power supply for 50Hz and 60Hz
z Central control function available
z New friendly refrigerant R410a, zero ODP, environment protection
Manual code: SYJS-017-10REV.0 Edition: 2010-12-10

Haier AD18LS1ERA Specifications

General

Cooling Capacity (BTU)	18000 BTU
Compressor Type	Rotary
Refrigerant	R32
Type	Split System
Features	Auto Restart, Blue Fin Condenser, Super Cooling, Anti-Corrosion Protection

Summary

Description of products & features

Product features

Describes key features like DC inverter, R410a, communication, and control types.

Specification

Dimension

Pipe and wiring installation

Multi combination and the data

Provides data for various multi-unit combinations for cooling and heating.

Wiring connection

Illustrates connection diagrams for outdoor units and indoor units.

Limitation values on pipe installation

Specifies maximum piping lengths, drops, and other installation limits.

PCB photo,Wiring diagram and function description

Outdoor unit

Indoor unit

Diagnostic code and trouble shooting

Diagnostic code for outdoor unit

Lists malfunction codes and their descriptions for outdoor units.

Diagnostic code for indoor unit

Lists failure codes and diagnostic steps for indoor units.

Trouble Shooting

Offers troubleshooting guides for common problems like display failure and sensor issues.

Sensor characteristic

Controller functions

Unit start

Instructions for starting and stopping the unit via remote controller.

Select operation mode

Select temp.setting

Fan speed selection

Auto operation

Abnormal operation

Describes abnormal operation states and system responses.

Trial operation

Timer operation

SLEEP function

Anti-freezed protection

Explains the anti-freezing protection mechanism in cooling/dry modes.

Overload protection in heating mode

Describes the overload protection mechanism specifically for heating mode.