Hitachi RAS-50FH5 User Manual

CONTENTS
SPECIFICATIONS --------------------------------------------------------------4
HOW TO USE -------------------------------------------------------------------6
CONSTRUCTION AND DIMENSIONAL DIAGRAM ---------------- 30
MAIN PARTS COMPONENT --------------------------------------------- 32
WIRING DIAGRAM ----------------------------------------------------------- 35
CIRCUIT DIAGRAM ---------------------------------------------------------- 39
PRINTED WIRING BOARD LOCATION DIAGRAM---------------- 43
BLOCK DIAGRAM ------------------------------------------------------------ 47
BASIC MODE ------------------------------------------------------------------ 49
REFRIGERATING CYCLE DIAGRAM ---------------------------------- 63
AUTO SWING FUNCTION------------------------------------------------- 64
DESCRIPTION OF MAIN CIRCUIT OPERATION ------------------ 65
SERVICE CALL Q & A ----------------------------------------------------- 96
TROUBLE SHOOTING ------------------------------------------------------ 99
PARTS LIST AND DIAGRAM------------------------------------------- 121
NO. 0364E
SERVICE MANUAL
PM
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
RAS-50FH5/RAC-50YH5
RAS-50FH5
REFER TO THE FOUNDATION MANUAL
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
FEBRUARY 2007 Refrigeration & Air-Conditioning Division
INDOOR UNIT + OUTDOOR UNIT
RAC-50YH5
(W)
(A)
(kW)
(B.T.U./h)
(W)
(A)
(kW)
(B.T.U./h)
W
H
D
(kg)
RAS-50FH5 RAC-50YH5
DC INVERTER (WALL TYPE)
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
CAPACITY
TOTAL INPUT
TOTAL AMPERES
CAPACITY
DIMENSIONS
(mm)
NET WEIGHT
SPECIFICATIONS
780
280
220
9.5
COOLING
HEATING
INDOOR UNIT OUTDOOR UNIT
1 PHASE, 50 Hz, 220-240V
1,780 (155 ~ 2,200)
8.14-7.50
5.00 (0.90 ~ 5.20)
17,070 (3,070 ~ 17,740)
3,070 (155 ~ 2,100)
9.00-8.30
6.50 (0.90 ~ 8.10)
22,180 (3,070 ~ 27,640)
850
650
298
45
HITACHI
DC INVERTER
T
E
M
P
O
R
A
R
Y
S
W
IT
C
H

Hitachi RAS-50FH5 Specifications

General

Brand	Hitachi
Model	RAS-50FH5
Category	Air Conditioner
Language	English

Summary

Safety and Precautions

SAFETY DURING REPAIR WORK

Essential safety measures before and during repair work.

WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS

Guidelines for safely handling electronic components to prevent damage.

SAFETY PRECAUTION

General warnings and cautions for unit installation, operation, and maintenance.

System Specifications and Components

SPECIFICATIONS

Technical data and performance characteristics of the air conditioner models.

NAMES AND FUNCTIONS OF EACH PART

Identification and purpose of key components in the indoor and outdoor units.

CONSTRUCTION AND DIMENSIONAL DIAGRAM

Visual representation of unit dimensions and construction details for installation planning.

Operation, Control, and Functions

HOW TO USE

A guide to the basic functions and operation of the air conditioner.

HOW TO SET THE TIMER

Instructions for programming the timer functions for automatic operation.

HOW TO SET THE SLEEP TIMER

Steps to set the sleep timer for automatic adjustment of temperature and fan speed.

ADJUSTING THE AIR DEFLECTOR

How to control the direction of airflow using the remote controller.

Technical Information and Troubleshooting

MAINTENANCE

Procedures for cleaning and general upkeep of the air conditioner.

WIRING DIAGRAM

Schematic representation of electrical connections between components.

CIRCUIT DIAGRAM

Detailed electrical schematics of the unit's functional circuits.

TROUBLE SHOOTING

Diagnostic procedures and solutions for common operational issues.

PARTS LIST AND DIAGRAM

Illustrated list of all replaceable parts for the indoor and outdoor units.