Hitachi RAC-50YH4, Service Manual

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SM 0 226
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
INDOOR UNIT + OUTDOOR UNIT
JANUARY 2005
Refrigeration & Air-Conditioning Division
SERVICE MANUAL
REFER TO THE FOUNDATION MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
CONTENTS
SPECIFICATIONS ------------------------------------------------------------------- 5
HOW TO USE ------------------------------------------------------------------------
7
CONSTRUCTION AND DIMENSIONAL DIAGRAM ---------------------- 30
MAIN PARTS COMPONENT --------------------------------------------------- 3 2
WIRING DIAGRAM ----------------------------------------------------------------- 3 5
CIRCUIT DIAGRAM ---------------------------------------------------------------- 3
9
PRINTED WIRING BOARD LOCATION DIAGRAM ---------------------- 4
2
BLOCK DIAGRAM ------------------------------------------------------------------ 4
6
BASIC MODE ------------------------------------------------------------------------ 4
8
REFRIGERATING CYCLE DIAGRAM ----------------------------------------
60
AUTO SWING FUNCTION ------------------------------------------------------ 61
DESCRIPTION OF MAIN CIRCUIT OPERATION ------------------------ 62
SERVICE CALL Q & A ----------------------------------------------------------- 93
TROUBLE SHOOTING ------------------------------------------------------------ 96
PARTS LIST AND DIAGRAM ------------------------------------------------- 11 8
RA S - 50YH4 /RAC- 50Y H4
RAC-
50Y
H4
RAS-
50Y
H
4
(W)
(A)
(kW)
(B.T.U./h)
(W)
(A)
(kW)
(B.T.U./h)
W
H
D
(kg)
RA S - 50Y H4 RAC- 50Y H4
DC INVERTER (
WALL
TYPE)
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
CAPACITY
TOTAL INPUT
TOTAL AMPERES
CAPACITY
DIMENSIONS
(mm)
NET WEIGHT
SPECIFICATIONS
7
80
28 0
20
5
9.5
COOLING
HEATING
INDOOR UNIT OUTDOOR UNIT
1 PHASE, 50 Hz, 2
3
0V
1,780
(155 ~
2,200
)
7.80
5.0
0 (0.90 ~
5.2
0)
17,060
1,97 0 (1 1 5 ~ 2 , 200 )
8.65
6
.50 (0.90 ~
8.1
0)
22,180
8
50
6 50
2
9
8
50