Hitachi RAC-VJ18PHAE User manual

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
ROOM AIR CONDITIONER
OUTDOOR UNIT
SERVICE MANUAL
TECHNICAL INFORMATION
SPECIFICATIONS
OUTDOOR UNIT
RAC-VJ18PHAE
RAC-VJ25PHAE
RAC-VJ35PHAE
RAC-VJ42PHAE
RAC-VJ50PHAE
Johnson Controls-Hitachi Air Conditioning Wuhu Co., Ltd.
FOR SERVICE PERSONNEL ONLY
REFER TO THE FOUNDATION MANUAL
CONTENTS
SPECIFICATIONS ----------------------------------------------------------------- 6
CONSTRUCTION AND DIMENSIONAL DIAGRAM --------------------- 8
MAIN PARTS COMPONENT -------------------------------------------------- 10
WIRING DIAGRAM --------------------------------------------------------------- 12
BLOCK DIAGRAM ---------------------------------------------------------------- 15
REFRIGERATING CYCLE DIAGRAM --------------------------------------- 16
PROCEDURE FOR DISASSEMBLY AND REASSEMBLY------------- 18
DESCRIPTION OF MAIN CIRCUIT OPERATION ------------------------ 20
SERVICE CALL Q & A ----------------------------------------------------------- 37
TROUBLE SHOOTING ----------------------------------------------------------- 39
PARTS LIST AND DIAGRAM -------------------------------------------------- 52
NO.0148E
JCH-WH
After installation
The performance tests are based on the EN14511、EN14825.
RAC-VJ18PHAE
RAC-VJ25PHAE
RAC-VJ35PHAE
RAC-VJ42PHAE
RAC-VJ50PHAE
INDOOR UNIT OUTDOOR UNIT INDOOR UNIT INDOOR UNIT
RAK-VJ35PHAE RAC-VJ35PHAE RAK-VJ42PHAE RAK-VJ50PHAE
780 7500([phone]
280 548 280 280
227 288([phone]
8.6 31.6 8.8 8.8
DC INVERTER
6.50-7.09
6.00 (2.20 7.30)
20,470 (7,510 24,910)
792(+91)
600
299(+47)
OUTDOOR UNIT
RAC-VJ50PHAE
1 PHASE,50Hz, 220-240V
1,471 (500 2,100)
6.14-6.69
5.00 (1.90 5.20)
17,060 (6,480 17,740)
1,558 (500 2,750)
299(+47)
NET WEIGHT (Kg) 8.6 31.6 8.6 39.5
792(+91)
H280 548 280 600
(B.T.U./h) 8,530 (3,070 10,920) 11,600 (3,070 15,010) 14,330 (3,070 17,060) 18,430 (5,800 20,470)
DIMENSIONS
(mm)
W780 750(+60) 780
2.93-2.81 3.87-3.71 5.05-4.63 5.49-5.99
CAPACITY (KW) 2.50 (0.90 3.20) 3.40 (0.90 4.40) 4.20 (0.90 5.00) 5.40 (1.70 6.00)
8,530 (3,070 10,580) 11,940 (3,070 13,650) 14,330 (5,800 17,060)
HEATING
TOTAL INPUT (W)519 (250 970) 733 (250 1,250) 1,000 (250 1,700) 1,317 (500 2,300)
TOTAL AMPERES (A)
4.35-3.98 4.68-5.10
CAPACITY (KW) 2.00 (0.90 2.50) 2.50 (0.90 3.10) 3.50 (0.90 4.00) 4.20 (1.70 5.00)
(B.T.U./h) 6,820 (3,070 8,530)
POWER SOURCE 1 PHASE,50Hz,220-240V 1 PHASE,50Hz,220-240V 1 PHASE,50Hz,220-240V 1 PHASE,50Hz, 220-240V
COOLING
TOTAL INPUT (W) 419 (250 1,010) 549 (250 1,290) 875 (250 1,460)
OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT
MODEL RAK-VJ18PHAE RAC-VJ18PHAE RAK-VJ25PHAE RAC-VJ42PHAE
31.6 39.5
288(+55)D 227 288(+55) 227
548
750(+60)
1,120 (500 1,800)
TOTAL AMPERES (A) 2.46-2.35 3.08-2.95
RAC-VJ25PHAE
OUTDOOR UNIT
TYPE INDOOR UNIT
- 1 -

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DANGER
- 2 -

WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS
1. Scope
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
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2. Object parts
฀
฀฀฀฀฀
฀฀฀฀฀฀฀.... 
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
3. Items to be observed in handling
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
฀฀฀฀
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
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฀฀฀฀฀฀฀฀฀฀
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
฀฀
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
฀฀
Fig. 1 Conductive container
฀฀฀฀฀฀


฀฀
Fig. 2 Body earth
฀฀฀฀฀฀฀฀
฀฀฀฀฀฀฀฀
฀฀฀฀฀฀
฀฀฀฀฀฀
฀฀฀฀
฀฀฀฀

Ω
- 3 -

฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
Fig.4 Grounding a solder iron
฀฀฀฀฀฀฀฀฀฀฀
Ω
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
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฀฀฀฀฀฀฀฀฀฀฀฀
.฀฀
฀฀
Ω

฀฀

Fig.3 Grounding of the working table
฀฀
฀฀
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- 4 -

..
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
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฀฀
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
฀
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฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
!
CAUTION
฀
- 5 -

UK
DX1U
SPECIFICATIONS
RAC-VJ18PHAE
RAC-VJ25PHAE
RAC-VJ35PHAE
RAC-VJ42PHAE
RAC-VJ50PHAE
870g
ERZVA9V511,S14K320
1050g
ASD088CKPA71K6B
47W
- 6 -

The refrigerating machine oil is
easily affected by moisture. Use
caution to prevent water from
entering the cycle.
The difference in height between
the indoor and outdoor unit
should be kept below 10m.
The connecting pipe, no matter
big or small, should all be
insulated with insulation pipe and
then wrapped with vinyl tape.
(The insulator will deteriorate if
it is not wrapped with tape).
The connection of insulated drain
hose.
Inner diameter 16mm
Please use insulated drain hose for
the indoor piping (commercial
product)
above 100mm
above 300mm
above 150mm
give clearance
as wide as
possible
above
200mm
above 200mm
Maximum pipe length 20m Minimum pipe length 3m
The clearances of the
unit from top, left, right
and front are specified
in figure below. At least
three of the above sides
must be open air.
Figure showing the installation of Outdoor unit
MODEL RAC-VJ18PHAE/RAC-VJ25PHAE/RAC-VJ35PHAE/RAC-VJ42PHAE/RAC-VJ50PHAE
- 7 -

NOTE:
1.For outdoor unit installation , allow at least 2 sides of space around the unit ensure ventilation flue.
2.The connecting pipe , should all the insulated with insulation pipe.
3.Piping length is within 20m.
4.Height d fferent of the piping between the indoor unit and outdoor unit s ould be within 10m.
h
i
CONSTRUCTION AND DIMENSIONAL DIAGRAM
MODEL RAC-VJ18/25/35PHAE
Unit : mm
OUTDOOR UNIT

฀฀
฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀
฀
฀฀
฀
฀
0RUH
WKDQ

127(
- 8 -

Unit : mm
More
than
NOTE:
1.For outdoor unit installation , allow at least 2 sides of space around the unit ensure ventilation flue.
2.The connecting pipe , should all the insulated with insulation pipe.
3.Piping length is within 20m.
4.Height d fferent of the piping between the indoor unit and outdoor unit s ould be within 10m.hi
200
More than
More than
300
600
345
299
202
163.5
589
92
59
792
877
55
57
190
147
12
(11)
Drain hole
Drain hole
Drain hole
CONSTRUCTION AND DIMENSIONAL DIAGRAM
MODEL RAC-VJ42PHAE,RAC-VJ50PHAE
OUTDOOR UNIT
- 9 -

MAIN PARTS COMPONENT
FAN MOTOR
MAIN ELECTRIC COMPONENTS FOR OUTDOOR UNIT
Fan Motor Specifications
RAC-VJ18/25/35/42/50PHAE
RAC-VJ18/25/35/42/50PHAE
RAC-VJ18/25/35/42/50PHAE
RAC-VJ18/25/35PHAE
RAC-VJ42
DC : 160 - 380V
47W
THERMOSTAT (Room temperature Thermistor)
BLU : BLUE YEL : YELLOW BRN : BROWN WHT : WHITE
GRY : GRAY ORN : ORANGE GRN : GREEN RED : RED
BLK : BLACK PNK : PINK VIO : VIOLET
Ω2780ȍ ℃ )
ȍ
℃
)
/50PHAE
140m
- 10 -