Hitachi RAS-50YH4 Service Manual

SERVICE MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
RAS-50YH4
SPECIFICATIONS
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
COOLING
CAPACITY
TOTAL INPUT
TOTAL AMPERES
HEATING
CAPACITY
DIMENSIONS
(mm)
NET WEIGHT
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
JANUARY 2005
RAC-50YH4
(W)
(A)
(kW)
(B.T.U./h)
(W)
(A)
(kW)
(B.T.U./h)
W
H
D
(kg)
INDOOR UNIT + OUTDOOR UNIT
Refrigeration & Air-Conditioning Division
RAS-50YH4/RAC-50YH4
REFER TO THE FOUNDATION MANUAL
SPECIFICATIONS ------------------------------------------------------------------- 5
HOW TO USE ------------------------------------------------------------------------ 7
CONSTRUCTION AND DIMENSIONAL DIAGRAM ---------------------- 30
MAIN PARTS COMPONENT --------------------------------------------------- 32
WIRING DIAGRAM ----------------------------------------------------------------- 35
CIRCUIT DIAGRAM ---------------------------------------------------------------- 39
PRINTED WIRING BOARD LOCATION DIAGRAM ---------------------- 42
BLOCK DIAGRAM ------------------------------------------------------------------ 46
BASIC MODE ------------------------------------------------------------------------ 48
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 ------------------------------------------------- 118
DC INVERTER (WALL TYPE)
INDOOR UNIT OUTDOOR UNIT
RAS-50YH4 RAC-50YH4
1 PHASE, 50 Hz, 230V
1,780 (155 ~ 2,200)
7.80
5.00 (0.90 ~ 5.20)
17,060
1,970 (115 ~ 2,200)
8.65
6.50 (0.90 ~ 8.10)
22,180
780 850
650
280
205
298
9.5 50
SM0226
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