Hitachi RAS-08LH2B User Manual

NO. 0518E
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
INDOOR UNIT + OUTDOOR UNIT
MARCH 2012 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 ---------30
MAIN PARTS COMPONENT --------------------------------------32
WIRING DIAGRAM ---------------------------------------------------34
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 -----------------------------------------57
SERVICE CALL Q & A ----------------------------------------------58
PARTS LIST AND DIAGRAM --------------------------------------67
RAS-08LH2/RAS-08LH2(B) / RAC-08LH1
RAS-10LH2/RAS-10LH2(B) / RAC-10LH1
RAS-14LH2/RAS-14LH2(B) / RAC-14LH1
COOLING
HEATING
INDOOR UNIT
RAS-08LH2/
RAS-08LH2(B)
780
280
220
8.5
After installation
RAS-08LH2/RAS-08LH2(B)
RAS-10LH2/RAS-10LH2(B)
RAS-14LH2/RAS-14LH2(B)
RAS-08LH1
RAS-10LH1
RAS-14LH1
OUTDOOR UNIT
RAC-8LH1
INDOOR UNIT
RAS-10LH2/
RAS-10LH2(B)
OUTDOOR UNIT
RAC-10LH1
INDOOR UNIT
RAS-14LH2/
RAS-14LH2(B)
OUTDOOR UNIT
RAC-14LH1
700
468
258
23
700
468
258
27
780
280
220
9.0
700
468
258
25
780
280
220
9.0
1 PHASE, 50 Hz, 220-230V
670 – 680
3.14 – 3.05
2.18 – 2.18
7,440 – 7,440
570 – 580
2.70 – 2.63
2.18 – 2.18
7,440 – 7,440
1 PHASE, 50 Hz, 220-230V
910 – 940
4.25 – 4.20
2.92 – 2.96
9,970 – 10,100
780 – 810
3.65 – 3.62
2.97 – 2.98
10,140 – 10,170
1 PHASE, 50 Hz, 220-230V
1,300 – 1,320
6.10 – 5.90
3.66 – 3.68
12,500 – 12,560
1,020 – 1,060
4.85 – 4.80
3.81 – 3.86
13,010 – 13,180

Hitachi RAS-08LH2B Specifications

General

Brand	Hitachi
Model	RAS-08LH2B
Category	Air Conditioner
Language	English

Summary

SAFETY AND PRECAUTIONS

SAFETY DURING REPAIR WORK

Critical safety measures for service personnel before and during unit repair.

SEMICONDUCTOR HANDLING STANDARDS

Rules for safely handling sensitive electronic components to prevent damage.

GENERAL SAFETY PRECAUTIONS

Key safety instructions for installation, maintenance, and operation of the air conditioner.

SPECIFICATIONS AND COMPONENTS

MODEL SPECIFICATIONS

Detailed technical data for different air conditioner models including capacity and power.

CONSTRUCTION AND DIMENSIONAL DIAGRAMS

Visual representation of the unit's structure and external dimensions for installation planning.

MAIN PARTS COMPONENT

Identification and specifications of key internal components like thermostats, motors, and compressors.

REFRIGERANT CYCLE DIAGRAM

Schematic showing the flow of refrigerant through the air conditioning system.

OPERATION MODES AND CONTROLS

REMOTE CONTROL OPERATION

Explanation of the remote control's buttons, display, and functions.

BASIC OPERATING MODES

How to use Automatic, Heating, Dehumidifying, Cooling, and Fan modes.

TIMER AND SLEEP FUNCTIONS

Instructions for setting timers and the sleep function for automated operation.

AUTO SWING FUNCTION

How to control the automatic movement of the air deflector for air distribution.

MAINTENANCE AND TROUBLE-SHOOTING

MAINTENANCE PROCEDURES

Steps for cleaning filters, panels, and preparing for long-term storage.

AFTER SALE SERVICE AND WARRANTY

Guidelines for requesting service, common issues, and warranty information.

TROUBLE-SHOOTING GUIDE

Diagnostic steps and solutions for common operational problems like no cooling or heating.

PARTS LIST AND DIAGRAMS

Comprehensive lists and diagrams of spare parts for indoor and outdoor units.