Hitachi RAC-70YH7, Service Manual

Page: 1 / 92

NO. 0465E
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
INDOOR UNIT + OUTDOOR UNIT
JANUARY 2010
Refrigeration & Air-Conditioning Division
SERVICE MANUAL
PM
REFER TO THE FOUNDATION MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
SPECIFICATIONS
RAS-70YH7
CONTENTS
CAUTION ----------------------------------------------------------------- 4
SPECIFICATIONS ----------------------------------------------------- 5
INSTALLATION --------------------------------------------------------- 6
HOW TO USE ---------------------------------------------------------- 7
CONSTRUCTION AND DIMENSIONAL DIAGRAM ------- 29
MAIN PARTS COMPONENT ------------------------------------- 31
WIRING DIAGRAM -------------------------------------------------- 33
CIRCUIT DIAGRAM ------------------------------------------------- 35
PRINTED WIRING BOARD LOCATION DIAGRAM ------- 41
BLOCK DIAGRAM --------------------------------------------------- 44
BASIC MODE --------------------------------------------------------- 45
REFRIGERATING CYCLE DIAGRAM ------------------------- 59
DESCRIPTION OF MAIN CIRCUIT OPERATION --------- 61
SERVICE CALL Q & A -------------------------------------------- 74
TROUBLE SHOOTING --------------------------------------------- 78
PARTS LIST AND DIAGRAM ------------------------------------ 98
RAS-70YH7/RAC-70YH7
After installation
RAC-70YH7
(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
COOLING
HEATING
OUTDOOR UNIT
RAC-70YH7
INDOOR UNIT
RAS-70YH7
1150
333
245
15
1 Ø, 50/60 Hz, 220-240V
2,170 (200 – 2,820)
9.95
7.00 (1.50 – 8.00)
23,900 (5,120 – 27,315)
2,200 (200 – 2,970)
10.10
8.00 (1.50 – 9.20)
27,300 (5.119 – 31,396)
850
800
298
55
HITACHI