Haier AS12GB3HRA User Manual

SERVICE MANAUL
Wall Mounted Type
DC Inverter FREE MATCH EK-Series
AS12GB3HRAModel 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
2013 (Qingdao Haier Air Conditioner General corp. , Ltd)
All rights reserved. Unauthorized copying and distribution is a violation of law
Version V1 Date 2013-09-10

Haier AS12GB3HRA Specifications

General

Brand	Haier
Model	AS12GB3HRA
Category	Inverter
Language	English

Summary

Introduction

Safety Cautions

Provides essential safety precautions and explains pictograms used in the manual.

Caution in Repair

Lists specific warnings and cautions to be followed during repair work.

Cautions Regarding Products after Repair

Details safety precautions to be taken after the repair work is completed.

Inspection after Repair

Outlines checks to be performed after the repair is finished to ensure safety.

Specifications

Technical Specifications

Provides detailed technical specifications for the air conditioner unit.

Piping Diagrams

Cooling and Heating Mode Piping

Illustrates the refrigerant piping layout for cooling and heating modes.

Printed Circuit Board Connector Wiring Diagram

PCB Connector Layout

Functions and Control

Key Operating Functions and Modes

Operation

Base Operation Procedures

Emergency and Test Operations

Service Diagnosis

Service Diagnosis Overview

Provides cautions, parameters, symptoms, and measures for unit diagnostics.

Error Codes and Descriptions

Lists specific error codes, their fault descriptions, and reference pages.

Component Malfunction Troubleshooting

Troubleshooting guides for thermistor, fan motor, and IPM related issues.

Communication and Power Faults

Diagnoses communication errors and power supply over/under voltage faults.

Compressor and System Protection Issues

Troubleshooting compressor faults, protection modes, and refrigerant issues.

Circuit Diagrams

Indoor Unit Circuit Diagram

Power Supply and Control Circuitry