Hitachi RAC-70YH7A, Service Manual

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NO. 0509E
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
INDOOR UNIT + OUTDOOR UNIT
FEBRUARY 2012
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-70YH7A
After installation
RAC-70YH7A
(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-70YH7A
INDOOR UNIT
RAS-70YH7
1150
333
245
15
1 Ø, 50/60 Hz, 220-240V
2,170 (200 – 2,820)
9.95 – 9.10
7.00 (1.50 – 8.00)
23,900 (5,120 – 27,315)
2,200 (200 – 2,970)
10.10 – 9.30
8.00 (1.50 – 9.20)
27,300 (5.119 – 31,396)
850
800
298
55
HITACHI