Hitachi RAS-09CH4 User Manual

RAS-07CH4
RAS-09CH4
RAC-07CH4
RAC-09CH4
SERVICE MANUAL
TECHNICAL INFORMATION
REFER TO THE FOUNDATION MANUAL
FOR SERVICE PERSONNEL ONLY
CONTENTS
SPECIFICATIONS ............................................................... 5
HOW TO USE ..................................................................... 6
CONSTRUCTION AND DIMENSIONAL DIAGRAM ........ 32
MAIN PARTS COMPONENTS ......................................... 33
WIRING DIAGRAM ........................................................... 35
BASIC MODE .................................................................... 41
REFRIGERATING CYCLE ................................................ 46
AUTO SWING FUNCTION ............................................... 47
SERVICE CALL Q & A ..................................................... 48
PARTS LIST AND DIAGRAM ........................................... 53
PM
NO. 0205E
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
INDOOR UNIT + OUTDOOR UNIT
MARCH 2004 H.A.P.M.
SPECIFICATIONS
TYPE
WALL TYPE
INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT
MODEL RAS-07CH4 RAC-07CH4 RAS-09CH4 RAC-09CH4
POWER SOURCE 1Ø, 220 V, 50 Hz
TOTAL INPUT (W) 680 870
COOLING
TOTAL AMPERES (A) 3.15 4.1
CAPACITY
(kW) 2.05 2.50
(B.T.U./h) 7,000 8,500
TOTAL INPUT (W) 630 860
HEATING
TOTAL AMPERES (A) 3.0 4.1
CAPACITY
(kW) 2.15 2.65
(B.T.U./h) 7,850 10,000
W 785 700 785 700
DIMENSIONS (mm) H 265 570 265 570
D 168 210 168 210
NET WEIGHT (kg) 7 26 7 26
RAS-07CH4/RAC-07CH4
RAS-09CH4/RAC-09CH4

Hitachi RAS-09CH4 Specifications

General

Brand	Hitachi
Model	RAS-09CH4
Category	Air Conditioner
Language	English

Summary

Safety During Repair Work

Working Standards for Preventing Breakage of Semiconductors

Handling Semiconductors

Guidelines for handling sensitive electronic components safely.

Caution

Operational Phenomena and Limits

Explains refrigerant noise, compressor delay, and cooling operation limits.

Safety Precaution

Installation, Maintenance, and Operation Safety

Safety guidelines for unit installation, shifting, maintenance, and operation.

Specifications

Model and Component Specifications

Detailed technical specifications for models, motors, and other components.

Names and Functions of Each Part

Indoor and Outdoor Unit Parts Identification

Identification of components for indoor and outdoor units.

Model Name and Dimensions

Unit model names and their physical dimensions.

Operation Indicator

Temporary Switch and Indicator Lamps

Explanation of the temporary switch and indoor unit indicator lights.

Names and Functions of Remote Control Unit

Remote Controller Features and Precautions

Overview of remote control functions and usage guidelines.

Automatic Operation

Automatic Operation Conditions

How the unit selects operation mode based on room temperature.

Heating Operation

Dehumidifying Operation

Dehumidifying Function Details

Detailed explanation of the dehumidification process and performance.

Cooling Operation

Fan Operation

Auto Fan Speed Control

Explanation of how the fan speed adjusts automatically.

How to Set the Timer

Timer Setting Procedures

Guide to setting ON, OFF, and ON/OFF timers.

Timer Cancellation

Instructions for canceling set timer reservations.

How to Set the Sleep Timer

Sleep Timer Operation and Cancellation

How to set and cancel the sleep timer function.

Adjusting the Air Deflectors

Vertical and Horizontal Airflow Adjustment

How to adjust the air deflector for desired airflow direction.

How to Exchange the Batteries in the Remote Controller

The Ideal Ways of Operation

Operational Tips and Filter Maintenance

Advice on ideal operation, ventilation, and air filter cleaning.

For User's Information

Operation Notes and Interference

Information on heat sources, power saving, lightning, and electrical interference.

Maintenance

Air Filter Cleaning and Replacement

Instructions for cleaning and replacing the air filter.

Exterior Cleaning

How to clean the unit's front cover and remote controller.

Regular Inspection

Periodic Checks for Safety and Stability

Checks on power connections, grounding, and unit mounting.

After Sales Service and Warranty

Pre-Service Checks and Operational Notes

Checks before service and explanations of normal operation phenomena.

How to Replace New UV-LED and Filter

Component Replacement Procedure

Step-by-step guide for replacing UV-LED and filter components.

Construction and Dimensional Diagram

Unit Construction and Dimensions

Diagrams detailing the construction and physical dimensions of the units.

Main Parts Components

Thermostat and Fan Motor Specifications

Specifications for thermostat models and fan motors.

Compressor Motor

Compressor Motor Specifications and Caution

Specifications for compressor motors and important cautions.

Wiring Diagram

Electrical Component Legend and Schematic

Key for electrical components and wiring schematic for the unit.

Basic Mode

Timer-Lamp, Break-Down Checking in Blinking Sign

Troubleshooting via Timer Lamp Blinking

Interpreting timer lamp blinking for fault diagnosis.

Refrigeration Cycle

Cooling, Defrost, and Heating Cycles

Diagrams illustrating the refrigeration cycle in different modes.

Auto Swing Function

Service Call Q & A

Cooling and Dehumidifying Operation Issues

Common questions and answers for cooling and dehumidifying modes.

Heating and Automatic Operation Issues

Common questions and answers for heating and automatic modes.

Remote Controller and General Issues

Troubleshooting common issues with the remote controller and general operation.

Parts List and Diagram