Haier Group 1U53RA1ERA User Manual

SERVICE MANAUL
Wall Mounted Type
DC Inverter
T-Series
1U53RA1ERA
1U71SA1ERA
Model No.
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
Repair the product or products dealt with in this service information by anyone else could result in serious injury or death
WARNING
2016 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Haier Group
Version：V1 Date：2016-10-30

Haier Group 1U53RA1ERA Specifications

General

Brand	Haier Group
Model	1U53RA1ERA
Category	Air Conditioner
Language	English

Summary

Introduction and Safety

General Safety Cautions

General safety precautions and pictograms for repair work.

Cautions for Products After Repair

Safety guidelines and precautions for product installation and post-repair.

Inspection After Repair

Specifications and Components

Functions, Controls, and Protection

PCB Connector Wiring Diagrams

Lists connectors and their functions on the outdoor and module PCBs.

Compressor Operation Control

Protection Functions Overview

Overview of various protection mechanisms in the unit.

High Temperature Preventing Protection

Protection against high temperature in the air-blowing system.

Compressor Overcurrent Prevention

Measures to prevent compressor overcurrent.

Antifreezing Protection

Protection against freezing of the indoor heat exchanger.

Malfunction Display and Handling

Service Diagnosis

Diagnosis Cautions and Symptoms

Precautions to take before starting diagnostic procedures and common symptoms.

Error Codes and Thermistor Faults

Error codes and troubleshooting for thermistor issues.

DC Fan Motor Fault

IPM Protection

Diagnosis and troubleshooting for IPM protection issues.

Compressor Over-current

Communication Faults

Power Supply and Overheat Faults

Loss of Synchronism and Work-Intense Protection

Performance Curves