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Haier AS12TB3HRA User Manual

Haier AS12TB3HRA
58 pages
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SE
RVICE MANUAL
Wall Mounted Type
DC Inverter
AS12TB3HRAModel No.
This servic e informatio n is designed for experience d repai r technician s only and is not designe d for use by the genera l public.
It does not contai n warning s or caution s to advise non-technic al individu als of potentia l dangers in attemptin g to servic e a product.
Product s powered by electricit y shoul d be service d or repaire d only by experience d professiona l technicia ns. Any attemp t to service or
Repai r the produc t or product s deal t with in this servic e infor mation by anyone else could result in seriou s injury or death
WARNING
2015 (Qing dao Haie r Air Condi tioner Genera l corp . , Ltd)
All right s reser ved. Unauthoriz ed cop ying and distributio n is a violati on of law
Haier Group
Version V1 Date 2017-12-28
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Haier AS12TB3HRA Specifications

General IconGeneral
Cooling Capacity (Ton)1 Ton
Energy Efficiency Rating3 Star
Compressor TypeRotary
RefrigerantR32
Power Supply220-240V, 50Hz
Power Consumption (Cooling)1050 W
TypeInverter
Cooling Capacity12000 BTU/h
Air Flow Rate550 CFM
Air Flow (Indoor)550 CFM

Summary

Introduction to the Air Conditioner

Model Name Explanation

Explains the meaning of each character in the model number.

Safety Cautions

Caution in Repair

Details warnings and precautions to be taken during repair work.

Cautions Regarding Products After Repair

Advises on precautions to take after the product has been repaired.

Inspection After Repair

Outlines checks required after repair work is completed.

Using Icons

Explains the meaning and usage of icons in the manual.

Product Features

Key Product Features

Lists and describes the main functional features of the air conditioner.

Technical Specifications

Detailed Unit Specifications

Provides electrical, capacity, and physical specifications of the unit.

Sensor Information

List of System Sensors

Identifies the sensors used in the system and their purpose.

Piping Diagrams

Refrigerant Piping Diagrams

Illustrates the refrigerant flow in cooling and heating modes.

PCB Wiring and Connectors

PCB Connector and Wiring Details

Details connectors on the PCB and lists PCB model information.

Functions and Control

Automatic Operation Mode

Describes how the system automatically selects cooling or heating modes.

Cooling Operation Mode Details

Explains temperature control, fan speed, and airgate in cooling mode.

Dehumidifying Mode Operation

Details the operation and control features of the dehumidifying mode.

Heating Operation Mode Details

Explains temperature compensation and operation in heating mode.

Strength Operation Mode

Describes how to activate and use the strength operation mode.

Mute Operation Mode

Explains how to activate mute operation for heating and cooling.

Timer Functions

Details the 24-hour on/off timing methods and settings.

Dormant (Sleep) Operation

Explains the 8-hour dormant operation, including temperature adjustments.

Urgent On/Off Input Function

Describes the function of the urgency button for automatic and test operations.

Low Load Protection

Explains how the system prevents frosting during low load conditions.

High Load Protection

Details the protection mechanism for high coil temperatures.

Abnormal Indoor System Operation

Describes malfunctions when indoor and outdoor operations conflict.

Abnormality Confirmation Methods

Outlines methods to confirm various sensor and communication abnormalities.

Single Indoor System Operation Mode

Explains how to enter and exit single indoor system operation.

Power Cut Compensation Feature

Describes how the system stores status upon power interruption.

Test Program Operation

Details the steps and indicators for the test program.

Thermistor Resistance Values

Provides tables of resistance values for sensors at various temperatures.

Dimensional and Gravity Information

Unit Dimensional Drawings

Shows the external dimensions of the indoor unit in millimeters.

Center of Gravity Location

Indicates the center of gravity location on the unit.

Service Diagnosis and Troubleshooting

Caution for Diagnosis

Provides important warnings before starting diagnostic procedures.

Common Symptoms and Solutions

Lists common operating problems and their corresponding checks and measures.

Error Code Descriptions

Lists error codes indicated by the indoor display and outdoor LED.

Thermistor Fault Diagnosis

Details procedures for diagnosing thermistor and related abnormalities.

EEPROM Malfunction Diagnosis

Explains how to diagnose and resolve EEPROM related errors.

Indoor Fan Motor Malfunction

Provides troubleshooting steps for indoor fan motor issues.

Outdoor DC Fan Motor Fault

Details troubleshooting for outdoor DC fan motor faults.

IPM Protection Faults

Explains IPM protection and troubleshooting steps.

Compressor Over-current Fault

Details diagnosis and solutions for compressor over-current issues.

IPM and Outdoor PCB Communication Faults

Outlines troubleshooting for communication faults between IPM and PCB.

Power Supply Voltage Faults

Describes diagnosis for over/under voltage faults and related components.

Overheat Protection for Discharge Temperature

Details troubleshooting for overheat protection related to discharge temperature.

Indoor-Outdoor Communication Faults

Provides troubleshooting steps for communication failures between units.

Loss of Synchronism Detection

Explains detection and troubleshooting for loss of synchronism.

High Work-Intense Protection

Details diagnosis for high work-intense protection in heating mode.

Circuit Diagrams

Schematic Circuit Diagrams

Presents schematic diagrams of the electronic circuits.

Component Removal Procedures

Front Panel Removal

Step-by-step guide to removing the front panel of the indoor unit.

Casing Removal

Instructions for removing the main casing of the unit.

Horizontal Flap and Stepper Motor Removal

Details the process for removing the horizontal flap and stepper motor.

Horizontal Louver and Control Box Removal

Guides the removal of the horizontal louver and the control box.

Heat Exchanger Removal

Step-by-step procedure for removing the heat exchanger.

Fan Rotor and Motor Removal

Instructions for removing the fan rotor and fan motor.

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