Hitachi RAC-DJ18PHAE Service Manual
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Hitachi RAC-DJ18PHAE Service Manual

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SERVICE MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
OUTDOOR UNIT
RAC-DJ18PHAE
RAC-DJ25PHAE
RAC-DJ35PHAE
SPECIFICATIONS
TYPE
INDOOR UNIT
MODEL
RAK-DJ18PHAE
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-DJ50PHAE
OUTDOOR UNIT
INDOOR UNIT
RAC-DJ18PHAE
RAK-DJ25PHAE
1 PHASE,50Hz,220-240V
1 PHASE,50Hz,220-240V
580 (250~1,010)
700 (250~1,290)
3.22-2.95
2.00 (0.90~2.50)
2.50 (0.90~3.10)
6,820 (3,070~8,530)
8,530 (3,070~10,580)
595 (250~970)
850 (250~1,250)
3.51-3.22
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
660(+60)
780
280
530
280
222
278(+55)
222
7.7
23
7.7
ROOM AIR CONDITIONER
OUTDOOR UNIT
JCH-WH
RAC-DJ18PHAE
RAC-DJ25PHAE
RAC-DJ35PHAE
RAC-DJ50PHAE
REFER TO THE FOUNDATION MANUAL
SPECIFICATIONS ----------------------------------------------------------------- 6
CONSTRUCTION AND DIMENSIONAL DIAGRAM --------------------- 9
MAIN PARTS COMPONENT -------------------------------------------------- 11
WIRING DIAGRAM --------------------------------------------------------------- 13
BLOCK DIAGRAM ---------------------------------------------------------------- 16
REFRIGERATING CYCLE DIAGRAM --------------------------------------- 17
DESCRIPTION OF MAIN CIRCUIT OPERATION ------------------------ 22
TROUBLE SHOOTING ----------------------------------------------------------- 42
PARTS LIST AND DIAGRAM -------------------------------------------------- 55
DC INVERTER
OUTDOOR UNIT
INDOOR UNIT
RAC-DJ25PHAE
RAK-DJ35PHAE
1 PHASE,50Hz,220-240V
1,084 (250~1,460)
3.89-3.57
5.38-4.94
3.50 (0.90~4.00)
11,940 (3,070~13,650)
1,050 (250~1,700)
4.52-4.15
5.30-4.86
4.20 (0.90~5.00)
14,330 (3,070~17,060)
660(+60)
780
530
280
278(+55)
222
23
7.7
NO.0146E
CONTENTS
OUTDOOR UNIT
INDOOR UNIT
OUTDOOR UNIT
RAC-DJ35PHAE
RAK-DJ50PHAE
RAC-DJ50PHAE
1 PHASE,50Hz, 220-240V
1,548 (500~2,100)
7.11-6.51
5.00 (1.90~5.20)
17,060 (6,480~17,740)
1,617 (500~2,750)
7.42-6.81
6.00 (2.20~7.30)
20,470 (7,510~24,910)
792(+91)
660(+60)
780
530
280
299(+47)
278(+55)
222
24.4
8.4
After installation
600
39.1

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Summary of Contents for Hitachi RAC-DJ18PHAE

  • Page 1: Table Of Contents

    299(+47) 278(+55) 278(+55) 278(+55) NET WEIGHT (Kg) 24.4 39.1 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.
  • 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...
  • Page 4 Ω Fig.3 Grounding of the working table Fig.4 Grounding a solder iron Ω...
  • Page 5 CAUTION...

  • Page 6: Specifications

    SPECIFICATIONS RAC-DJ18PHAE RAC-DJ35PHAE RAC-DJ50PHAE RAC-DJ25PHAE ASD088CKPA71K6B DX1U ERZVA9V511,S14K320 580g 720g 930g...
  • Page 7 Figure showing the installation of Outdoor unit MODEL RAC-DJ18PHAE/RAC-DJ25PHAE/RAC-DJ35PHAE 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 The clearances of the unit from top, left, right should be kept below 10m.
  • Page 8 Figure showing the installation of Outdoor unit MODEL RAC-RAC-DJ50PHAE 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. The clearances of the The connecting pipe, no matter unit from top, left, right...

  • Page 9: Construction And Dimensional Diagram

    CONSTRUCTION AND DIMENSIONAL DIAGRAM MODEL RAC-DJ18/25/35PHAE OUTDOOR UNIT Air outlet 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.
  • Page 10 CONSTRUCTION AND DIMENSIONAL DIAGRAM MODEL RAC-RAC-DJ50PHAE 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.

  • Page 11: Main Parts Component

    MAIN PARTS COMPONENT THERMOSTAT (Room temperature Thermistor) FAN MOTOR Fan Motor Specifications RAC-DJ18/25/35/50PHAE 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 12 COMPRESSOR MOTOR Compressor Motor Specifications RAC-DJ50PHAE RAC-DJ18/25/35PHAE ASD088CKPA7JK6B GTD130UKQA8JT6 220 - 350 V 220 - 350 V 827W 1350W 2M = 2.084 2M = 1.354 RAC-DJ18/25/35PHAE RAC-DJ50PHAE CAUTION...

  • Page 13: Wiring Diagram

    WIRING DIAGRAM MODEL RAC-DJ18/25/35/50PHAE ※2 SOME MODELS NOT NEED TO INSTALL THE CIRCUITS IN DASH DOT. ※3 F1 CURRENT VALUE BE DIFFERENT FOR DIFFERENT MODELS.
  • Page 14 RAC-DJ18/25/35PHAE 外...
  • Page 15 RAC-DJ50PHAE...

  • Page 16: Block Diagram

    BLOCK DIAGRAM MODEL RAC-DJ18/25/35/50PHAE 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 17: Refrigerating Cycle Diagram

    MODEL RAC-DJ18/25PHAE COMPESSOR S-TANK CONDENSER REVERSING VALVE SINGLE-ENDED UNION(3/8") EXPASSION VALVE Indoor unit SILENCER SILENCER SINGLE-ENDED UNION(1/4") COMPESSOR S-TANK CONDENSER REVERSING VALVE SINGLE-ENDED UNION(3/8") EXPASSION VALVE Indoor unit SILENCER SILENCER SINGLE-ENDED UNION(1/4")
  • Page 18 MODEL RAC-DJ35PHAE COMPESSOR S-TANK CONDENSER REVERSING VALVE SINGLE-ENDED UNION(3/8") Indoor unit EXPASSION VALVE SILENCER SILENCER SINGLE-ENDED UNION(1/4") COMPESSOR S-TANK CONDENSER REVERSING VALVE SINGLE-ENDED UNION(3/8") Indoor unit EXPASSION VALVE SILENCER SILENCER SINGLE-ENDED UNION(1/4")
  • Page 19 MODEL RAC-DJ50PHAE COMPESSOR S-TANK CONDENSER REVERSING VALVE SINGLE-ENDED UNION(3/8") Indoor unit EXPASSION VALVE SILENCER SILENCER SINGLE-ENDED UNION(1/4") COMPESSOR S-TANK CONDENSER REVERSING VALVE SINGLE-ENDED UNION(3/8") Indoor unit EXPASSION VALVE SILENCER SILENCER SINGLE-ENDED UNION(1/4")

  • Page 20: Procedure For Disassembly And Reassembly

    Procedure for Disassembly and Reassembly <OUTDOOR UNIT> Remove P.W.B. fixing screws (1 locations) and MODEL RAC-DJ18/25/35PHAE 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 21 (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.

  • Page 22: Description Of Main Circuit Operation

    RAC-DJ18/25/35PHAE DB601 300-330 Main parts C021, 600 ,450V)
  • Page 23 2. Power circuit (Low voltage)
  • Page 24 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...
  • Page 25 4.Reversing valve control circuit This model reversing valve control used to control the relay ON/OFF of the revesing valve, and also control the coil of the reversing valve ON/OFF. The relay ON/OFF has different type when in the different operation mode. You can see each operation mode as fllows.
  • Page 26 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 27 MAIN...
  • Page 28 ..
  • Page 29 40 50 /> % A@0- - *00- S &...
  • Page 30 RAC-DJ50PHAE DB602 300-330 In case of compressor inverter circuit (Q901~Q906） Compressor inverter circuit (Q901~Q906） Constitute by some inverter parts.
  • Page 31 C021-C022,610 ,450V) 300-330...
  • Page 32 2. Power circuit (Low voltage) Power supply for Comp driver circuit of compressor and fan motor, IGBT action.
  • Page 33 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...
  • Page 34 4.Reversing valve control circuit This model reversing valve control used to control the relay ON/OFF of the revesing valve, and also control the coil of the reversing valve ON/OFF. The relay ON/OFF has different type when in the different operation mode. You can see each operation mode as fllows.
  • Page 35 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 36 MAIN...
  • Page 37 ..
  • Page 38 55 67 /> % A@0- - *00- S &...

  • Page 39: 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.
  • Page 40 Frost Wash...
  • Page 41 Wireless remote Control...

  • Page 42: Trouble Shooting

    TROUBLE SHOOTING MODEL RAC-DJ18/25/35/50PHAE Inspection instructions RAC-DJ18/25/35PHAE RAC-DJ50PHAE Φ Φ Warning Warning...
  • Page 43 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 44 ・...
  • Page 45 Troubleshooting support ・ ・ ・ ・ ・ ・...
  • Page 46 SELF-DIAGNOSIS LIGHTING MODE RAC-DJ18/25/35/50PHAE 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 47 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 48 LD301 blinking frequency each 0.25 second, please check it carefully. ・ ・ voltage detection circuit or current Circuit abnormal detection circuit).
  • Page 49 220-320...
  • Page 51 (In this case of an abnormality convert circuit or DC voltage detection circuit.) (RAC-42/50WEF only) have...
  • Page 52 CHECKING THE REFRIGERATING CYCLE...
  • Page 53 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 54 TO OPERATE THE OUTDOOR UNIT INDEPENDENTLY L RAC-DJ18/25/35PHAE RAC-DJ50PHAE ※ Do not operate for 5 minutes or more. ※...

  • Page 55: Parts List And Diagram

    PARTS LIST AND DIAGRAM OUTDOOR UNIT MODEL RAC-DJ18PHAE、RAC-DJ25PHAE、RAC-DJ35PHAE 5(DJ35PHAE) 5(DJ18/25PHAE) (DJ35PHAE) 6(DJ18/25PHAE)
  • Page 56 INDOOR UNIT HHAW PARTS NO Q'TY/UNIT PARTS NAME HWRAC-18WED HWRAC- BASE COMPRESSOR HWRAC-DJ18PHAE HWRAC HWRAC-18WED COMPRESSOR RUBBER HWRAC-18WEB HWRAC- PUSH NUT HWRAC-DJ18PHAE HWRAC CONDENSER CONDENSER HWRAC-DJ35PHAE HWRAC REVERSING VALVE HWRAC-DJ18PHAE HWRAC REVERSING VALVE HWRAC-DJ35PHAE HWRAC 2S-VALVE HWRAC-50WEA 3S-VALVE HWRAC-10GH5 O.L.R COVER HWRAC-50WPC CONNECTING CORD(COMP) HWRAC-DJ18PHAE...
  • Page 57 PARTS LIST AND DIAGRAM OUTDOOR UNIT MODEL RAC-DJ50PHAE...
  • Page 58 OUTDOOR UNIT HHAW PARTS NO Q'TY/UNIT PARTS NAME HWRAC-18WED HWRAC- BASE HWRAC-DJ18PHAE HWRAC COMPRESSOR HWRAC-18WED COMPRESSOR RUBBER HWRAC-18WEB HWRAC- PUSH NUT CONDENSER HWRAC-DJ18PHAE HWRAC CONDENSER HWRAC-DJ35PHAE HWRAC HWRAC-DJ18PHAE HWRAC REVERSING VALVE REVERSING VALVE HWRAC-DJ35PHAE HWRAC HWRAC-50WEA 2S-VALVE 3S-VALVE HWRAC-10GH5 O.L.R COVER HWRAC-50WPC CONNECTING CORD(COMP) HWRAC-DJ18PHAE...
  • Page 59 JCH-WH NO.0146E RAC-DJ18PHAE RAC-DJ25PHAE RAC-DJ35PHAE RAC-DJ50PHAE...

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