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Sharp AY-A079E - User Manual

Sharp AY-A079E
36 pages
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AY/AE-A079E
AY/AE-A099E
1
Page
SPECIFICATIONS ........................................................................................................................................... 2
EXTERNAL DIMENSIONS............................................................................................................................... 3
WIRING DIAGRAMS....................................................................................................................................... 4
ELECTRICAL PARTS ...................................................................................................................................... 5
MICROCOMPUTER CONTROL SYSTEM...................................................................................................... 8
FUNCTIONS ................................................................................................................................................... 9
TROUBLESHOOTING OF THE CONTROL CIRCUIT .................................................................................. 17
REFRIGERATION CYCLE ........................................................................................................................... 21
PERFORMANCE CURVES .......................................................................................................................... 23
REFRIGERANT PIPE AINSTALLATION WORKS ......................................................................................... 24
DISASSEMBLING PROCEDURE ................................................................................................................. 25
REPLACEMENT PARTS LIST ....................................................................................................................... 29
TABLE OF CONTENTS
SERVICE MANUAL
S2915AYA099E/
SHARP CORPORATION
SPLIT SYSTEM
ROOM AIR CONDITIONERS
INDOOR UNIT
AY-A079E
AY-A099E
AE-A079E
AE-A099E
In the interests of user-safety (Required by safety regulations in some
countries) the set should be restored to its original condition and only
parts identical to those specified should be used.
OUTDOOR UNIT
MODELS
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Sharp AY-A079E Specifications

General IconGeneral
TypeSplit Type
Cooling Capacity (HP)0.75 HP
Power Supply220-240V, 50Hz
RefrigerantR32
Cooling Capacity7000 BTU/h
Operating Temperature (Cooling)18°C to 43°C
Energy Efficiency Ratio (EER)10.5 BTU/W

Summary

Specifications

External Dimensions

Indoor Unit Dimensions

Figure E-1: Shows physical size and shape of the indoor unit.

Outdoor Unit Dimensions

Figure E-2: Shows physical size and shape of the outdoor unit.

Wiring Diagrams

AY-A079 E;AY-A099 E Wiring Diagram

Figure W-1: Illustrates electrical connections for both units.

AE-A079 E Wiring Diagram

Figure W-2: Details electrical connections specific to the AE-A079E model.

Electrical Parts

Microcomputer Control System

Electronic Control Circuit Diagram

Figure L-1: Visual representation of the control circuit's components and connections.

Printed Wiring Board Diagram

Figure L-2: Shows the layout of components on the printed wiring board.

Microcomputer (IC1) Port Allocation

Details pin functions of the microcomputer (IC1).

Functions

Temperature Control Characteristics

Explains how room temp. relates to preset temp. for different modes.

Operation Modes and Fan Speed

Covers basic modes (COOL, DRY, HEAT) and fan speed control.

Specialized Operational Features

Includes Hot-Keep, Preheat Air Flow, and Overheating Protection.

Control & Protection Mechanisms

Details Current Control, Freeze Preventive, Defrost, and Delayed Reverse Valve.

Timer and Automatic Operations

Covers Timer functions, Automatic AC, and Fan Speed.

Test Modes

Procedures for testing unit operation.

Diagnosis Procedure

Troubleshooting Guide

Control Circuit Troubleshooting

Flowchart for diagnosing control circuit issues.

Remote Controller Issues

Troubleshooting steps for remote control malfunctions.

Cooling;Heating Operation Issues

Diagnosing problems with cooling or heating output.

Heating Operation Issues

Diagnosing problems specific to heating operation.

Refrigeration Cycle

Refrigeration Cycle Diagrams

Shows overall cycle and refrigerant flow paths.

Cycle Conditions and Capillary Tubes

Details temperatures, pressures, and capillary tube specs.

Performance Curves

Cooling Performance Data

Shows cooling capacity and input vs. air temp. for both models.

Heating Performance Data

Shows heating performance vs. air temp. for both models.

Refrigerant Pipe Installation Works

Disassembling Procedure

Indoor Unit Disassembly

Step-by-step guide for taking apart the indoor unit.

Outdoor Unit Disassembly

Step-by-step guide for taking apart the outdoor unit.

Replacement Parts List

Cabinet and Unit Parts

Lists external and internal parts of the unit.

Control Box Parts

Lists electronic components and boards.

Cycle Parts

Lists parts related to the refrigeration system.

Accessory and Screw Parts

Lists additional items like screws and accessories.

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