Haier 3U19FS1ERA 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 3U19FS1ERA Specifications

General

Cooling Capacity (BTU)	19000
Power Supply	220-240V, 50Hz
Noise Level (Outdoor)	52 dB(A)
Features	Self-cleaning
Operating Temperature	-15 ~ 43 °C

Summary

Description of products & features

Products code explanation

Explains the meaning of each character in product model numbers.

Specification

Dimensions

Pipe and wiring installation

Multi combination and data

Presents data for various multi-unit combinations and their performance.

Wiring connection

Illustrates wiring diagrams and connection methods for different outdoor units.

Limitation values on pipe installation

Specifies maximum piping lengths and height differences for installation.

Outdoor installation

PCB photo, wiring diagram and function description

Outdoor unit PCBs and diagrams

Diagnostic code and troubleshooting

Diagnostic codes

Lists malfunction codes for outdoor and indoor units with their diagnosis.

Troubleshooting guide

Provides step-by-step guides for resolving common operational issues.

Sensor characteristic

Controller functions

Base Operation

Timer and On-Off Operation

Wired Controller Functions

Settings and Diagnostics