Hitachi RAC-18WPC, Service Manual, Page: 1 / 43

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
OUTDOOR UNIT
SERVICE MANUAL
REFER TO THE FOUNDATION MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
SPECIFICATIONS
CONTENTS
SPECIFICATIONS ------------------------------------------------------------------- 6
CONSTRUCTION AND DIMENSIONAL DIAGRAM --------------------- 8
MAIN PARTS COMPONENT --------------------------------------------------- 9
WIRING DIAGRAM ---------------------------------------------------------------- 11
After installation
BLOCK DIAGRAM ----------------------------------------------------------------- 13
REFRIGERATING CYCLE DIAGRAM --------------------------------------- 14
DESCRIPTION OF MAIN CIRCUIT OPERATION ----------------------- 16
SERVICE CALL Q & A ---------------------------------------------------------- 24
TROUBLE SHOOTING ----------------------------------------------------------- 28
PARTS LIST AND DIAGRAM --------------------------------------------------
HHAW
RAC-18WPC
RAC-25WPC
OUTDOOR UNIT
OUTDOOR UNIT
OUTDOOR UNIT
RAC-18W
RAC-25W
(KW)
(B.T.U./h)
(KW)
(B.T.U./h)
W
660(+60)
660(+60)
H
530
530
D
278(+35)
278(+35)
MODEL
POWER SOURCE
TOTAL INPUT (W
TOTAL AMPERES (A)
CAPACITY
COOLING
HEATING
TOTAL INPUT (W
TOTAL AMPERES (A)
CAPACITY
DIMENSIONS
(mm)
3.12-2.97
2.00 (0.90 2.50)
8,530 (3,070 10,580)
580 (250 970)
2.50 (0.90
27.5 27.5
3.20)
3.49-3.34
11,600 (3,070 15,010)
880 (250 1,250)
NET WEIGHT (Kg)
TYPE
DC INVERTER
1 PHASE,50Hz,220-230V 1 PHASE,50Hz,220-230V
550 ( 700 (250 ) 1,290)
4.56-4.36
3.40 (0.90 4.40)
11,600 (3,070 15,010)
3.75-3.59
2.50 (0.90 3.10)
8,530 (3,070 10,580)
250
PC
PC
RAC-18WPC
RAC-25WPC
PROCEDURE FOR DISASSEMBLY AND REASSEMBLY-------------15
0100E
41
1010
Johnson Controls-Hitachi Air Conditioning Wuhu Co., Ltd.