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Haier 1U12BS3ERA User Manual

Haier 1U12BS3ERA
66 pages
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SERVICE MANAUL
Wall Mounted Type
DC Inverter SUPER MATCH
1U12BS3ERAModel 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
Haier Group
Version˖V1 Date˖2013-11-25

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Haier 1U12BS3ERA Specifications

General IconGeneral
TypeSplit System
Cooling Capacity12000 BTU/h
RefrigerantR410A
Power Supply220-240V, 50Hz
Operating Temperature (Cooling)18°C to 43°C
Operating Temperature (Heating)-7°C to 24°C

Summary

Introduction

Model Name Explanation

Explains the components and meaning of the model number for the air conditioner unit.

Safety and Operational Guidelines

Covers general safety warnings, cautions after repair, inspection steps, and icon explanations.

Specifications

Sensors List

Piping Diagrams

Cooling Mode

Diagram showing the refrigerant circuit during cooling operation.

Heating Mode

Diagram showing the refrigerant circuit during heating operation.

Operation Range

Cooling Operation Range

Shows the valid indoor/outdoor temperature range for cooling operation.

Heating Operation Range

Shows the valid indoor/outdoor temperature range for heating operation.

PCB Connector Wiring Diagram

Control PCB Connectors

Lists connectors and their functions for the main control board.

Module PCB Connectors

Lists connectors and their purposes for the module board.

Functions and Control

Main Functions and Control Specification

Outlines key operational parameters, control logic, and protection mechanisms.

Thermistor Values

Dimensional Drawings

Center of Gravity

Installations

Installation Site Selection and Outdoor Unit Fixing

Recommendations for choosing locations and mounting the outdoor unit.

Indoor Unit Installation Procedures

Steps for mounting, piping, and connecting the indoor unit.

Pre-Operation Checks and Connections

Ensures correct piping, drainage, power, and gas connections.

Final Installation and Test Run Checks

Checklist for final verification and initial testing.

Service Diagnosis

Caution for Diagnosis

Important warnings and preliminary steps before performing diagnosis.

Primary Electronic Appliance Parameters

Lists key operating parameters for major electronic components.

Problem Symptoms and Measures

Lists common operational problems and recommended troubleshooting steps.

General Error Codes and Description

Details common error codes displayed by the unit and their faults.

Sensor and PCB Malfunctions

Troubleshooting for thermistor, EEPROM, and PCB errors.

Motor and Compressor Faults

Diagnosing issues with fan motors, IPM, compressor, and related protections.

Communication and Power Issues

Addresses communication faults and power supply voltage problems.

Performance and Curve Diagrams

Cooling Performance Curves

Graphs showing cooling capacity, power, discharge, and suction at different temperatures.

Heating Performance Curves

Graphs showing heating capacity, power, discharge, and suction at different temperatures.

Sound Level

Circuit Diagrams

Outdoor Unit Control Board Circuit Diagrams

Schematic for the outdoor unit's control board.

Module Board Circuit Diagram

Schematic for the module board.

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