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SERVICE MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
OUTDOOR UNIT
RAC-VJ18PHAE
RAC-VJ25PHAE
RAC-VJ35PHAE
SPECIFICATIONS
TYPE
INDOOR UNIT
MODEL
RAK-VJ18PHAE
POWER SOURCE
TOTAL INPUT (W)
TOTAL AMPERES (A)
COOLING
(KW)
CAPACITY
(B.T.U./h)
TOTAL INPUT
(W)
TOTAL AMPERES (A)
HEATING
(KW)
CAPACITY
(B.T.U./h)
W
DIMENSIONS
H
(mm)
D
NET WEIGHT
(Kg)
The performance tests are based on the EN14511、EN14825.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
Johnson Controls-Hitachi Air Conditioning Wuhu Co., Ltd.
RAC-VJ42PHAE
RAC-VJ50PHAE
OUTDOOR UNIT
INDOOR UNIT
OUTDOOR UNIT
RAC-VJ18PHAE
RAK-VJ25PHAE
RAC-VJ25PHAE
1 PHASE,50Hz,220-240V
1 PHASE,50Hz,220-240V
419 (250
1,010)
549 (250 1,290)
2.46-2.35
3.08-2.95
2.00 (0.90 2.50)
2.50 (0.90 3.10)
6,820 (3,070 8,530)
8,530 (3,070 10,580)
519 (250 970)
733 (250 1,250)
2.93-2.81
3.87-3.71
2.50 (0.90 3.20)
3.40 (0.90 4.40)
8,530 (3,070 10,920)
11,600 (3,070 15,010)
780
750(+60)
780
280
548
280
227
288(+55)
227
8.6
31.6
8.6
ROOM AIR CONDITIONER
OUTDOOR UNIT
JCH-WH
RAC-VJ18PHAE
RAC-VJ25PHAE
RAC-VJ35PHAE
RAC-VJ42PHAE
RAC-VJ50PHAE
REFER TO THE FOUNDATION MANUAL
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
TROUBLE SHOOTING ----------------------------------------------------------- 39
PARTS LIST AND DIAGRAM -------------------------------------------------- 52
DC INVERTER
INDOOR UNIT
OUTDOOR UNIT
RAK-VJ35PHAE
RAC-VJ35PHAE
1 PHASE,50Hz,220-240V
875 (250 1,460)
4.35-3.98
3.50 (0.90 4.00)
11,940 (3,070 13,650)
1,000 (250 1,700)
5.05-4.63
4.20 (0.90 5.00)
14,330 (3,070 17,060)
750(+60)
780
7500(+60)
548
280
548
288(+55)
227
288(+55)
31.6
8.6
31.6
- 1 -
NO.0148E
CONTENTS
OUTDOOR UNIT
INDOOR UNIT
INDOOR UNIT
RAC-VJ42PHAE
RAK-VJ42PHAE
RAK-VJ50PHAE
1 PHASE,50Hz, 220-240V
1 PHASE,50Hz, 220-240V
1,120 (500 1,800)
1,471 (500 2,100)
4.68-5.10
6.14-6.69
4.20 (1.70 5.00)
5.00 (1.90 5.20)
14,330 (5,800 17,060)
17,060 (6,480 17,740)
1,317 (500 2,300)
1,558 (500 2,750)
5.49-5.99
6.50-7.09
5.40 (1.70 6.00)
6.00 (2.20 7.30)
18,430 (5,800 20,470)
20,470 (7,510 24,910)
792(+91)
780
780
600
280
280
227
299(+47)
227
39.5
8.8
8.8
After installation
OUTDOOR UNIT
RAC-VJ50PHAE
792(+91)
600
299(+47)
39.5
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Summary of Contents for Hitachi RAC-VJ18PHAE
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Page 1: Table Of Contents
39.5 39.5 NET WEIGHT (Kg) 31.6 The performance tests are based on the EN14511、EN14825. After installation SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT ROOM AIR CONDITIONER OUTDOOR UNIT Johnson Controls-Hitachi Air Conditioning Wuhu Co., Ltd. - 1 -... - Page 2 6$)(7< '85,1* 5(3$,5 :25. ,Q RUGHU WR GLVDVVHPEOH DQG UHSDLU WKH XQLW LQ TXHVWLRQ EH VXUH WR GLVFRQQHFW WKH SRZHU FRUG SOXJ IURP WKH SRZHU RXWOHW EHIRUH VWDUWLQJ WKH ZRUN ,I LW LV QHFHVVDU\ WR UHSODFH DQ\ SDUWV WKH\ VKRXOG EH UHSODFHG ZLWK UHVSHFWLYH JHQXLQH SDUWV IRU WKH XQLW DQG WKH UHSODFHPHQW PXVW EH HIIHFWHG LQ FRUUHFW PDQQHU DFFRUGLQJ WR WKH LQVWUXFWLRQV LQ WKH 6HUYLFH 0DQXDO RI WKH XQLW ,I WKH FRQWDFWV RI HOHFWULFDO...
- Page 3 WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS 1. Scope 2. Object parts ..3. Items to be observed in handling Fig. 1 Conductive container Ω Fig. 2 Body earth - 3 -...
- Page 4 Ω Fig.3 Grounding of the working table Fig.4 Grounding a solder iron Ω - 4 -...
- Page 5 CAUTION - 5 -...
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Page 6: Specifications
SPECIFICATIONS RAC-VJ18PHAE RAC-VJ42PHAE RAC-VJ25PHAE RAC-VJ50PHAE RAC-VJ35PHAE ASD088CKPA71K6B DX1U ERZVA9V511,S14K320 870g 1050g - 6 -... - Page 7 Figure showing the installation of Outdoor unit MODEL RAC-VJ18PHAE/RAC-VJ25PHAE/RAC-VJ35PHAE/RAC-VJ42PHAE/RAC-VJ50PHAE The refrigerating machine oil is easily affected by moisture. Use caution to prevent water from entering the cycle. The difference in height between above 200mm the indoor and outdoor unit should be kept below 10m.
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Page 8: Construction And Dimensional Diagram
CONSTRUCTION AND DIMENSIONAL DIAGRAM MODEL RAC-VJ18/25/35PHAE OUTDOOR UNIT Unit : mm 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. - Page 9 CONSTRUCTION AND DIMENSIONAL DIAGRAM MODEL RAC-VJ42PHAE,RAC-VJ50PHAE OUTDOOR UNIT Unit : mm Drain hole Drain hole Drain hole 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.
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Page 10: Main Parts Component
MAIN PARTS COMPONENT THERMOSTAT (Room temperature Thermistor) FAN MOTOR Fan Motor Specifications RAC-VJ18/25/35/42/50PHAE DC : 160 - 380V BLU : BLUE YEL : YELLOW BRN : BROWN WHT : WHITE GRY : GRAY ORN : ORANGE GRN : GREEN RED : RED BLK : BLACK PNK : PINK VIO : VIOLET... - Page 11 COMPRESSOR MOTOR Compressor Motor Specifications RAC-VJ42PHAE RAC-VJ18/25/35PHAE RAC-VJ50PHAE ASD088CKPA7JK6B GTD130UKQA8JT6 220 - 350 V 220 - 350 V 827W 1350W 2M = 2.084 2M = 1.354 RAC-VJ18/25/35PHAE RAC-VJ42/50PHAE CAUTION - 11 -...
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Page 12: Wiring Diagram
WIRING DIAGRAM MODEL RAC-VJ18/25/35/42/50PHAE ※2 SOME MODELS NOT NEED TO INSTALL THE CIRCUITS IN DASH DOT. ※3 F1 CURRENT VALUE BE DIFFERENT FOR DIFFERENT MODELS. - 12 -... - Page 13 RAC-VJ18/25/35PHAE 外 - 13 -...
- Page 14 RAC-VJ42/50PHAE - 14 -...
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Page 15: Block Diagram
BLOCK DIAGRAM MODEL RAC-VJ18/25/35/42/50PHAE Power source OUTDOOR UNIT Compressor Power circuit drive circuit Indoor unit Compressor Indoor / Outdoor motor interface circuit Control power circuit Outdoor DC fan motor Reset circuit drive circuit Outdoor Fan motor ODU Heat Exchange thermistor verheat thermistor Reversing valve drive circuit... -
Page 16: Refrigerating Cycle Diagram
MODEL RAC-VJ18/25/35PHAE COOLING CYCLE OUTDOOR UNIT ODU Heat Exchange thermistor Silencer Indoor unit Silencer Silencer HEATING CYCLE OUTDOOR UNIT ODU Heat Exchange thermistor Silencer Indoor unit Silencer Silencer - 16 -... - Page 17 MODEL RAC-VJ42/50PHAE COOLING CYCLE OUTDOOR UNIT ODU Heat Exchange thermistor Silencer Indoor unit Silencer Silencer HEATING CYCLE OUTDOOR UNIT ODU Heat Exchange thermistor Silencer Indoor unit Silencer Silencer - 17 -...
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Page 18: Procedure For Disassembly And Reassembly
Procedure for Disassembly and Reassembly <OUTDOOR UNIT> Remove P.W.B. fixing screws (1 locations) and MODEL RAC-VJ18/25/35PHAE radiation fin fixing screws (8 locations), and 1. Electr cal Part remove the P.W.B. from the support. (1) Remove the upper cover fixing screws and lift the Radiation fin fixing screw cover to remove it. - Page 19 (4)Lower the right side of the front cover and pull (6)Set the electrical box upside down. it forward. Then, remove the cover from the hook. Fig. 9 (7)Remove each connector and earth cable from the lead wire. Then,remove the electrical box. Fig.
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Page 20: Description Of Main Circuit Operation
RAC-VJ18/25/35PHAE DB601 300-330 Main parts C021, 600 ,450V) - 20 -... - Page 21 2. Power circuit (Low voltage) - 21 -...
- Page 22 Main parts 001,C002,C003,C006 ,C007 ,C011,C013,C014，NF1 1,2,4. REG 1 DC/DC convertor IC (DC6 .5V DC5V). J6 (JUMPER) J32 (JUMPER) J32 (JUMPER) 0.5V (JUMPER) J7 1 (JUMPER) 15.5 1.5V J20 (JUMPER) 1.0V B-12V Expansion valve B-12V O/P 2.5V B-0V) 1.0V - 22 -...
- Page 23 4. Reversing valve (4-way valve) control circuit ※Voltage measurement timing ・ This model is equipped with a reversing valve Forced cooling (4-way Valve). switch (Test switch) ・ The reversing valve (4-way Valve) "slides" the valve in the specified direction for each Reversing valve (4-way Valve) operating mode and switches the route of...
- Page 24 ODU Heat Exchange thermistor CN30 HIC P.W.B R267 ODU Heat Exchange thermistor C226 R311 Ooutdoor Ooutdoor The ODU heat exchanger thermistor circuit measure the heat exchanger intermediate temperature of the outdoor unit, and micro computer estimate the pressure of compressor according to the temperature data. When the pressure reach the internal set value of the micro computer, the micro computer will adjust the speed of the compressor to protect the pressure of compressor.
- Page 25 MAIN - 25 -...
- Page 26 ..- 26 -...
- Page 27 40 50 /> (DC300-330V). - 27 -...
- Page 28 RAC-VJ42/50PHAE DB602 300-330 In case of compressor inverter circuit (Q901~Q906） Compressor inverter circuit (Q901~Q906） Constitute by some inverter parts. - 28 -...
- Page 29 C021-C022,610 ,450V) 300-330 - 29 -...
- Page 30 2. Power circuit (Low voltage) Power supply for Comp driver circuit of compressor and fan motor, IGBT action. - 30 -...
- Page 31 Main parts 001,C002,C003,C006 ,C007 ,C011,C013,C014，NF1 1,2. REG 1 DC/DC convertor IC (DC6 .5V DC5V). J9 6 (JUMPER) J138 JUMPER J139 (JUMPER) 0.5V J138 JUMPER J111 (JUMPER) 15.5 1.5V J138 JUMPER 1.0V J133 B-12V Expansion valve B-12V O/P 2.5V J130 B-0V 1.0V - 31 -...
- Page 32 4. Reversing valve (4-way valve) control circuit ※Voltage measurement timing ・ This model is equipped with a reversing valve (4-way Valve). Forced cooling ・ The reversing valve (4-way Valve) "slides" the switch (Test switch) valve in the specified direction for each operating mode and switches the route of Reversing valve (4-way Valve)
- Page 33 ODU Heat Exchange thermistor CN30 HIC P.W.B R267 ODU Heat Exchange thermistor C226 R311 Ooutdoor Ooutdoor Fig. 5-1 The ODU heat exchanger thermistor circuit measure the heat exchanger intermediate temperature of the outdoor unit, and micro computer estimate the pressure of compressor according to the temperature data. When the pressure reach the internal set value of the micro computer, the micro computer will adjust the speed of the compressor to protect the pressure of compressor.
- Page 34 MAIN - 34 -...
- Page 35 ..- 35 -...
- Page 36 55 67 /> (DC300-330V). - 36 -...
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Page 37: Service Call Q&A
SERVICE CALL Q&A Cold air comes out during a To improve the dehumidification efficiency performs dehumidifying operation. quiet fan operation. Therefore the air is cold and it is not a malfunction. - 37 -... - Page 38 Frost Wash - 38 -...
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Page 39: Trouble Shooting
TROUBLE SHOOTING MODEL RAC-VJ18/25/35/42/50PHAE Inspection instructions RAC-VJ18/25/35PHAE RAC-VJ42/50PHAE Φ Φ Warning Warning - 39 -... - Page 40 DISCHARGE, PROCEDURE AND POWER SHUT OFF METHOD FOR POWER CIRCUIT WARNING Caution Voltage of about 320 V is charged between the terminal of smoothing capacitors. During continuity check for each circuit part of the outdoor unit, be sure to discharge the smoothing capacitors.
- Page 41 ・ - 41 -...
- Page 42 Troubleshooting support ・ ・ ・ ・ ・ ・ - 42 -...
- Page 43 SELF-DIAGNOSIS LIGHTING MODE RAC-VJ18/25/35/42/50PHAE LED(※1) INDICATION LED INDICATION DURING STOP DANGER (DC350V) DURING COMPRESSOR OPERATE SELF-DIAGNOSE LD301 CHECKING POINT&REPAIR METHOD OPERATION CONTENT LD301 CUT THE POWER SOURCE AND WAIT MORE THAN STATUS NO POWER SUPPLY AT TERMINAL “L - N” → CHECK POWER CABLE 10 MINUTES BEFORE SERVICING WORK.
- Page 44 After turning on the power, perform air purification by remote control. If there is not the air purifier and operating function,setting to 32 by the remote control,and operate in the cooling mode. Correct the power supply. fan motor Check fan motor refer to DC fan motor control circuit.
- Page 45 LD301 blinking frequency each 0.25 second, please check it carefully. ・ ・ voltage detection circuit or current Circuit abnormal detection circuit). - 45 -...
- Page 46 220-320 - 46 -...
- Page 47 - 47 -...
- Page 48 (In this case of an abnormality convert circuit or DC voltage detection circuit.) (RAC-42/50WEF only) have - 48 -...
- Page 49 CHECKING THE REFRIGERATING CYCLE - 49 -...
- Page 50 How to run the product with the outdoor unit test switch If the indoor electrical parts is out of order and if you wish to run the outdoor unit 1. Turn on the outdoor terminal boards L and N (220-230 V AC). 2.
- Page 51 TO OPERATE THE OUTDOOR UNIT INDEPENDENTLY L RAC-VJ18/25/35PHAE RAC-VJ42/50PHAE ※ Do not operate for 5 minutes or more. ※ - 51 -...
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Page 52: Parts List And Diagram
PARTS LIST AND DIAGRAM OUTDOOR UNIT MODEL: RAC-VJ18PHAE\RAC-VJ25PHAE\RAC-VJ35PHAE - 52 -... - Page 53 JCH-WH PARTS NO Q'TY/ PARTS NAME UNIT RAC-VJ18PHAE RAC-VJ25PHAE RAC-VJ35PHAE HWRAC-35WPC BASE HWRAC-DJ18PHAE COMPRESSOR HWRAC-25YH4 PUSH NUT HWRAC-VJ18PHAE CONDENSER HWRAC-VJ18PHAE REVERSING VALVE HWRAC-50WEA 2S-VALVE HWRAC-10GH5 3S-VALVE HWRAC-SX10HAK A09 SOUND PROOF COVER ASSEMBLY HWRAC-VJ18PHAE ELECTRIC EXPANSION VALVE HWRAC-25WXA SOUND PROOF COVER ASSEMBLY HWRAC-25WXD A08 O.L.R COVER...
- Page 54 PARTS LIST AND DIAGRAM OUTDOOR UNIT MODEL RAC-VJ42PHAE/50PHAE - 54 -...
- Page 55 JCH-WH PARTS NO Q'TY/ PARTS NAME UNIT RAC-VJ42PHAE RAC-VJ50PHAE HWRAC-50WPC A01 BASE HWRAC-50WED A01 COMPRESSOR HWRAC-50NX2 A04 PUSH NUT HWRAC-DJ50PHAE CONDENSER HWRAC-VJ50PHAE REVERSING VALVE HWRAC-50WEA A05 SERVICE VALVE HWRAC-50WEA A06 SERVICE VALVE HWRAC-50WED A03 ELECTRIC EXPANSION VALVE HWRAC-50WED A04 SOUND PROOF HWRAC-50WPC A04 SOUND PROOF HWRAC-50WEC A07...
- Page 56 JCH-WH NO.0148E RAK-VJ18PHAE RAK-VJ25PHAE RAK-VJ35PHAE RAK-VJ42PHAE RAK-VJ50PHAE - 56 -...