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Hitachi RAS-09GH4 User Manual

Hitachi RAS-09GH4
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NO. 0193E
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
INDOOR UNIT + OUTDOOR UNIT
DECEMBER 2003
Refrigeration & Air-Conditioning Division
SERVICE MANUAL
PM
REFER TO THE FOUNDATION MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
(W)
(A)
(kW)
(B.T.U./h)
(W)
(A)
(kW)
(B.T.U./h)
W
H
D
(kg)
(WALL TYPE)
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
CAPACITY
TOTAL INPUT
TOTAL AMPERES
CAPACITY
DIMENSIONS
(mm)
NET WEIGHT
SPECIFICATIONS
CONTENTS
SPECIFICATIONS ----------------------------------------------------- 5
HOW TO USE ---------------------------------------------------------- 6
CONSTRUCTION AND DIMENSIONAL DIAGRAM ------- 29
MAIN PARTS COMPONENT ------------------------------------- 31
WIRING DIAGRAM -------------------------------------------------- 33
CIRCUIT DIAGRAM ------------------------------------------------- 35
PRINTED WIRING BOARD LOCATION DIAGRAM ------- 37
BLOCK DIAGRAM --------------------------------------------------- 39
BASIC MODE --------------------------------------------------------- 41
REFRIGERATING CYCLE DIAGRAM ------------------------- 47
DESCRIPTION OF MAIN CIRCUIT OPERATION --------- 49
AUTO SWING FUNCTION ---------------------------------------- 53
SERVICE CALL Q & A -------------------------------------------- 54
PARTS LIST AND DIAGRAM ------------------------------------ 63
RAS-07GH4 / RAC-07GH4
RAS-09GH4 / RAC-09GH4
RAS-14GH4 / RAC-14GH4
COOLING
HEATING
INDOOR UNIT
RAS-07GH4
780
280
210
9.0
After installation
RAS-07GH4
RAS-09GH4
RAS-14GH4
RAC-14GH4
RAC-07GH4
RAC-09GH4
OUTDOOR UNIT
RAC-07GH4
INDOOR UNIT
RAS-09GH4
OUTDOOR UNIT
RAC-09GH4
INDOOR UNIT
RAS-14GH4
OUTDOOR UNIT
RAC-14GH4
700
570
210
32
750
570
280
38
780
280
210
9.0
700
570
210
32
780
280
210
9.0
1 PHASE, 50 Hz, 220-230-240V
590-610-630
2.80-2.80-2.80
2.10
7,160
490-510-530
2.30-2.30-2.30
2.20
7,500
1 PHASE, 50 Hz, 220-230-240V
890-900-950
4.20-4.10-4.10
2.90
9,900
740-770-810
3.50-3.50-3.50
3.00
10,230
1 PHASE, 50 Hz, 220-230-240V
1060-1090-1120
5.00-5.00-4.90
3.50
11,940
960-1000-1050
4.60-4.60-4.60
3.85
13,140
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Hitachi RAS-09GH4 Specifications

General IconGeneral
Cooling Capacity2.5 kW
Power Supply220-240V, 50Hz
Energy Efficiency Ratio (EER)3.21
Coefficient of Performance (COP)3.61
RefrigerantR410A
Indoor Unit Weight9 kg
Noise Level (Outdoor)50 dB
TypeSplit System

Summary

Safety During Repair Work

Working Standards for Preventing Breakage of Semiconductors

Specifications

Safety Precaution

Names and Functions of Unit Parts

Indoor Unit Component Identification

Components and their functions within the indoor air conditioning unit.

Outdoor Unit Component Identification

Components and their functions within the outdoor air conditioning unit.

Indoor Unit Indicators and Controls

Temporary Switch Functionality

Allows manual start/stop and automatic mode operation without the remote.

Remote Control Unit Overview

Automatic Operation Mode

Heating Operation Mode

Dehumidifying Operation Mode

Cooling Operation Mode

Fan Operation Mode

Setting the Timer Functions

Setting the Sleep Timer

Sleep Timer Explanation

Air Deflector Adjustment

Remote Controller Battery Replacement

Ideal Operation Practices

User Information and Precautions

Attaching Air Filters

Maintenance Procedures

Air Filter Maintenance

Instructions for cleaning the air filter to maintain performance and air quality.

Front Panel Cleaning

Procedure for cleaning the front panel of the indoor unit.

Regular Inspection Guide

Points to check during periodic inspections by qualified service personnel.

After-Sales Service and Warranty

Construction and Dimensional Diagrams

Main Parts Component Overview

Thermostat Specifications

Specifications and operational details of the thermostat component.

Fan Motor Specifications

Specifications and connection details for the fan motor.

Compressor Motor Specifications

Specifications, connection, and resistance values for the compressor motor.

Wiring Diagram of System

Remote Control Circuit Diagram

Air Conditioner Block Diagram

Basic Operation Modes

Refrigerant Cycle Diagram

Description of Main Circuit Operation

ON/OFF and Timer Operations

How ON/OFF, timer reserve, and sleeping functions operate independently.

Reset Circuit Functionality

Function of the reset circuit in initializing the microcomputer after power issues.

Buzzer Circuit Operation

Explanation of the buzzer circuit activation and sound generation.

Receive Circuit Operation

How infrared signals from the remote controller are received and processed.

Service Operation Circuit Function

How the service switch enables temporary cooling control for troubleshooting.

Auto Swing Function

Service Call Q&A

Cooling Operation Troubleshooting

Troubleshooting common problems encountered during the cooling operation mode.

Dehumidifying Operation Troubleshooting

Troubleshooting common issues specific to the dehumidifying operation mode.

Heating Operation Troubleshooting

Troubleshooting common problems encountered during the heating operation mode.

Automatic Operation Troubleshooting

Common questions and answers regarding the automatic operation mode.

Remote Controller Troubleshooting

Questions and answers related to the functionality and settings of the wireless remote.

Trouble-Shooting Guide

Troubleshooting: No Cooling or Heating

Steps to diagnose and fix issues when the unit does not provide cooling or heating.

Timer Lamp Error Code Diagnosis

Interpreting timer lamp blinking patterns to identify specific component failures.

Parts List and Diagram: Indoor Units (RAS Models)

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