Sharp AU-A129E - User Manual

AH-A129E
AU-A129E
1
SHARP CORPORATION
TABLE OF CONTENTS
Page
SPECIFICATIONS ............................................................................................................................................ 2
EXTERNAL DIMENSIONS................................................................................................................................ 3
WIRING DIAGRAMS ......................................................................................................................................... 4
ELECTRICAL PARTS ....................................................................................................................................... 5
MICROCOMPUTER CONTROL SYSTEM........................................................................................................ 8
FUNCTIONS ..................................................................................................................................................... 9
REFRIGERATION CYCLE .............................................................................................................................. 13
PERFORMANCE CURVE ............................................................................................................................... 15
DISASSEMBLING PROCEDURE ................................................................................................................... 16
TROUBLESHOOTING OF THE CONTROL CIRCUIT .................................................................................... 21
REPLACEMENT PARTS LIST ........................................................................................................................ 24
SERVICE MANUAL
S2918AHA129E/
SPLIT SYSTEM
ROOM AIR CONDITIONERS
AU-A129E
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
INDOOR UNIT
AH-A129E
MODELS

Summary

Specifications

Wiring Diagrams

Microcomputer Control System

Microcomputer Port Allocation

Details the pin, terminal, input/output, and function for the microcomputer.

Functions

Operation Modes

Diagnosis Procedure

Outlines steps for diagnosing control circuit and thermistor issues.

Test Mode

Test Mode 1: Control Circuit Operation Checking

Checks control circuit by shorting terminals 1 and 2 of connector CN4.

Test Mode 2: Output Operation Checking

Checks output of each operation by using AUX. and TEST RUN buttons.

Performance Curves

Troubleshooting of the Control Circuit

Remote Controller Troubleshooting

Remote Controller Functionality Check

Flowchart for diagnosing issues when the machine doesn't respond to the remote controller.

Compressor and Thermistor Troubleshooting

Room Not Cooled Diagnosis

Steps to diagnose issues when the room is not cooled and the compressor doesn't operate.

Sharp AU-A129E Specifications

General

Refrigerant	R410A
Power Supply	220-240V, 50Hz
Cooling Capacity	12000 BTU
Air Flow Rate	550 m³/h
Air Flow (High)	550 m³/h