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SERVICE MANUAL
TECHNICAL INFORMATION
FOR SERVICE PERSONNEL ONLY
OUTDOOR UNIT
RAC-25FXE
RAC-35FXE
SPECIFICATIONS
TYPE
MODEL
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)
ROOM AIR CONDITIONER
Johnson Controls-Hitachi Air Conditioning Wuhu Co., Ltd.
RAC-50FXE
OUTDOOR UNIT
RAC-25
FX
E
1 PHASE,50Hz,220-230V
538 (155
1,
180)
2.
87-2.75
2.50 (0.90 3.10)
8,530 (3,070 10,580)
756 (115
1,120)
3.50-3.34
3.40 (0.90 4.40)
11,600 (3,070 15,010)
792(+65)
600
299(+27.5)
37
OUTDOOR UNIT
1
NO.0128E
JCH-WH
RAC-25FXE
RAC-35FXE
RAC-50FXE
REFER TO THE FOUNDATION MANUAL
CONTENTS
SPECIFICATIONS ------------------------------------------------------------------- 6
CONSTRUCTION AND DIMENSIONAL DIAGRAM ---------------------- 9
MAIN PARTS COMPONENT --------------------------------------------------- 11
WIRING DIAGRAM ---------------------------------------------------------------- 13
BLOCK DIAGRAM ----------------------------------------------------------------- 17
REFRIGERATING CYCLE DIAGRAM --------------------------------------- 18
PROCEDURE FOR DISASSEMBLY AND REASSEMBLY--------------20
DESCRIPTION OF MAIN CIRCUIT OPERATION ------------------------
SERVICE CALL Q & A -----------------------------------------------------------38
TROUBLE SHOOTING ------------------------------------------------------------41
PARTS LIST AND DIAGRAM ---------------------------------------------------56
DC INVERTER
OUTDOOR UNIT
RAC-35
FX
E
1 PHASE,50Hz,220-230V
933 (15
5
1,380)
4.27-4.09
3.50 (0.90 4.00)
11,940 (3,070 13,650)
1,154 (115
1,
35
0)
5.26-5.03
4.50 (0.90 5.00)
15,350 (3,070 17,060)
792(+65)
600
299(+27.5)
37
21
OUTDOOR UNIT
RAC-50
FX
E
1 PHASE,50Hz,220-230V
1,3
89
(500 2,100)
6.33-6.05
5.00 (0.90 5.20)
17,060 (3,070 17,740)
1,579 (500 2,700)
7.19-6.88
6.00 (0.90 8.10)
20,470 (3,070 27,640)
800(+63)
736
350(+35.5)
51
After installation
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Related Manuals for Hitachi RAC-25FXE
Summary of Contents for Hitachi RAC-25FXE
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Page 1: Table Of Contents
6.00 (0.90 8.10) (KW) CAPACITY 11,600 (3,070 15,010) 15,350 (3,070 17,060) 20,470 (3,070 27,640) (B.T.U./h) 792(+65) 792(+65) 800(+63) DIMENSIONS (mm) 299(+27.5) 299(+27.5) 350(+35.5) NET WEIGHT (Kg) After installation 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 The standards provide for items to be generally observed in carrying and handling semiconductors in relative manufactures during maintenance and handling thereof. (They apply the same to handling of abnormal goods such as rejected goods being returned.) 2.
- Page 4 (6) Use a three wire type soldering iron including a grounding wire. Metal plate (of Al. stainless steel, etc.) Bare copper wire (for body earth) Working table Resistor 1MΩ(1/2W) Staple Earth wire Fig.3 Grounding of the working table soldering iron Grounding wire Screw stop at the screwed part using a rag plate...
- Page 5 CAUTION In quiet or stop operation, slight flowing noise of refrigerant in the refrigerating cycle is heard occasionally, but this noise is not abnormal for the operation. When it thunders near by, it is recommend to stop the operation and turn off the circuit breaker for safety. In the event of power failure,the room air conditioner will restare automatically in the previously selected mode once the power is restored.
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Page 6: Specifications
SPECIFICATIONS RAC-25/35FXE RAC-50FXE 1200g... - Page 7 Figure showing the installation of Outdoor unit MODEL RAC-25 XE RAC-35 XE 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.
- Page 8 Figure showing the installation of lndoor and Outdoor unit MODEL RAC-50FXE 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. above 200mm The connecting pipe, no matter big or small, should all be...
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Page 9: Construction And Dimensional Diagram
CONSTRUCTION AND DIMENSIONAL DIAGRAM MODEL RAC-25/35FXE OUTDOOR UNIT Unit : mm (27) 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 10 CONSTRUCTION AND DIMENSIONAL DIAGRAM Unit : mm MODEL RAC-50FXE OUTDOOR UNIT 408.5 202.5 880.5 (35.5) (23) 111.5 543.5 More More than 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.
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Page 11: Main Parts Component
MAIN PARTS COMPONENT THERMOSTAT (Room temperature Thermistor) FAN MOTOR Fan Motor Specifications MODEL RAC-25/35/50FXE WHT(V) CONNECTION RED(U) BLK(W) 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 MODEL RAC-25/35FXE RAC-50FXE GSD102UKQA6JT6A GTD141UKQA8JT6 COMPRESSOR TYPE POWER SOURCE 220 - 350 V 220 - 350 V OUTPUT 1400W 790W WHITE YELLOW 2M= 1.354 2M= 1.354 RAC-25/35/50 CAUTION When the refrigerating cycle has been operated for a long time with the capillary tubes clogged or crushed or with too little refrigerant, check the color of the refrigerating machine oil inside the compressor.
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Page 13: Wiring Diagram
WIRING DIAGRAM MODEL RAC-25/35F XE... - Page 14 WIRING DIAGRAM RAC-50FXE...
- Page 15 MODEL RAC-25/35F XE M基板BOM HIC基板BOM 中继端子台基板用部品...
- Page 16 MODEL RAC-50FXE...
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Page 17: Block Diagram
BLOCK DIAGRAM MODEL RAC-25/35/50FXE 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 Overheat thermistor Defrost thermistor Reversing valve drive circuit Outdoor temperature... -
Page 18: Refrigerating Cycle Diagram
MODEL RAC-25/35F XE COOLING CYCLE OUTDOOR UNIT Silencer Indoor unit Silencer Silencer HEATING CYCLE OUTDOOR UNIT Silencer Indoor unit Silencer Silencer... - Page 19 MODEL RAC-50F XE COOLING CYCLE OUTDOOR UNIT Silencer Indoor unit Silencer Silencer HEATING CYCLE OUTDOOR UNIT Silencer Indoor unit Silencer Silencer...
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Page 20: Procedure For Disassembly And Reassembly
Procedure for Disassembly and Reassembly OUTDOOR UNIT MODEL RAC-50FXE OUTDOOR UNIT MODEL RAC-25/35FXE 1. Electrical parts 1. Electrical parts (1)Remove the service value cover lock screws (1)Remove the service value cover lock screws and lower the cover to remove it. and lower the cover to remove it. -
Page 21: Description Of Main Circuit Operation
DESCRIPTION OF MAIN CIRCUIT OPERATION RAC-25/35F XE 300-330 Main parts C021-C022,37 5 ,420V) - Page 22 2. Power circuit (Low voltage) Fig. 2-1 The 230V AC voltage is rectified to DC voltage (B-12V,16V,12V,5V) pass through switching control IC (ICI), switching transformer. (1) B-12V Power supply for electrical expansion valve. (2) 16V Power supply for IPM driver circuit of compressor and fan motor, IGBT action. (3) 12V Power supply for 4 way valve relay, power relay, inrush current relay,motor current amplification, (4) 5V...
- Page 23 Main parts 001,C002,C003,C004,C005,C011,C013,C014，NF1 1,2,5,8. DC/DC convertor IC (DC12V DC5V). L105 (JUMPER) D110 (EARTH) L104 (JUMPER) 0.5V D110 (EARTH) L103 (JUMPER) 15.5 1.5V D110 (EARTH) 1.0V R120 B-12V Expansion valve B-12V O/P 2.5V R120 B-0V) 1.0V...
- Page 24 4. Reversing valve (4-way valve) control circuit ・This model is equipped with a reversing valve ※Voltage measurement timing (4-way Valve). ・The reversing valve (4-way Valve) "slides" the Forced cooling switch (Test switch) valve in the specified direction for each operating mode and switches the route of Reversing valve refrigerant and holds the route with a built-in (4-way Valve)
- Page 25 HIC P.W.B 70 74 75...
- Page 26 6. Electric expansion valve circuit...
- Page 27 2A Fuse DC300 -330V...
- Page 28 60 100 ( DC300-330V )
- Page 29 50FXE 300-330...
- Page 30 C021-C023,500 ,450V) 33 ACT R249 IP CUT 300-330...
- Page 31 2. Power circuit (Low voltage) Fig. 2-1 The 230V AC voltage is rectified to DC voltage (B-12V,16V,12V,5V) pass through switching control IC (ICI), switching transformer. (1) B-12V Power supply for electrical expansion valve. (2) 16V Power supply for IPM driver circuit of compressor and fan motor, IGBT action. (3) 12V Power supply for 4 way valve relay, power relay, inrush current relay,motor current amplification, (4) 5V...
- Page 32 Main parts 001,C002,C003,C004,C005,C011,C013,C014，NF1 1,2,5,8. DC/DC convertor IC (DC12V DC5V). L105 (JUMPER) D110 (EARTH) L104 (JUMPER) 0.5V D110 (EARTH) L103 (JUMPER) 15.5 1.5V D110 (EARTH) 1.0V R418 B-12V Expansion valve B-12V O/P 2.5V 1 “ - ” 1.0V...
- Page 33 4. Reversing valve (4-way valve) control circuit ・ This model is equipped with a reversing valve ※Voltage measurement timing (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 refrigerant and holds the route with a built-in...
- Page 34 HIC P.W.B 70 74 75...
- Page 35 6. Electric expansion valve circuit...
- Page 36 2A Fuse DC300 -330V...
- Page 37 30 60 ( DC300-330V )
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Page 38: Service Call Q
SERVICE CALL Q&A Cooling operation The compressor sometimes Cooling when the room Check if the heat stops during cooling. temperature is low may exchanger of the indoor cause the heat exchanger unit is covered with dew. of the indoor unit to gather Wait for 3 to 4 minutes dew. - Page 39 Common, etc. In "automatic wind speed" mode, the In wind speed "automatic" mode, This does not abnormal. It indoor fan changes from strong wind the product will sense the heat is because the cold wind to weak wind to slight wind. exchange temperature and, prevention is working.
- Page 40 Wireless remote control The timer will not become set. Have you set the product to the current time? The timer cannot be set unless it is set to the current time. The current time When set to the current The current time display will disappears 10 seconds time setting, the reading disappear at once.
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Page 41: Trouble Shooting
TROUBLE SHOOTING MODEL RAC-25/35/50FXE Inspection instructions RAC-25/35FXE RAC-50FXE Indoor fan motor Indoor fan motor Power supply Power supply Indoor Electrical Outdoor Electrical Indoor Electrical Outdoor Electrical 1Φ 230V 50Hz 1Φ 230V 50Hz Compressor Compressor motor motor Warning 0V line 0V line Note that the 0 V line of the outdoor electrical parts and Control circuit... - Page 42 DISCHARGE, PROCEDURE AND POWER SHUT OFF METHOD FOR POWER CIRCUIT WARNING Caution Voltage of about 350 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 43 Other instructions (1) Detaching and reattaching the receptacles for tab terminal All the receptacles for connecting tab terminals are with a locking mechanism. Forcibly pulling any such receptacle without unlocking it will destroy it. Be on guard. When reconnecting it, insert it securely all the way home. ・Receptacle types and how to unlock them Mild resin cover Cancel button...
- Page 44 Troubleshooting support Function ・The failure mode detected on the outdoor unit side is displayed by blinking the "LD301". Detecting a failure will stop the outdoor unit [Display on the and keep blinking the LD301 until it is restarted. outdoor unit side] (The communication error will persist until the communication is reestablished.) ・The failure modes detected on the indoor and outdoor unit sides...
- Page 45 SELF-DIAGNOSIS LIGHTING MODE MODEL RAC-25/35F X E...
- Page 46 SELF-DIAGNOSIS LIGHTING MODE MODEL RAC-50FXE...
- 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. Is there 230V AC between Is the LD301 turned on? Ensure the power supply.
- Page 48 * This page is for RAC-25/35FXE Check the blinking frequency of the LD301. The LD301 blinks 13 times. Replace the outdoor electrical parts (in the case of an abnormality in the EEPROM reading error microcomputer or EEPROM). Abnormal The LD301 blinks 9 times. Check the F cable connection (for half insertion, connection by Correct the F cable connection.
- Page 49 * This page is only for RAC- Check the blinking frequency of the LD301. The LD301 blinks 13 times. Replace the outdoor electrical parts (in the case of an abnormality in the EEPROM reading error microcomputer or EEPROM). Abnormal The LD301 blinks 9 times. Check the F cable connection (for half insertion, connection by Correct the F cable connection.
- Page 50 The LD301 blinks 10 times. AC 187 V or less, AC 253 V or more Is there AC 220 -230V between Check the power supply. terminal boards L and N? Power supply voltage error AC 187-253 V Ifyon confirm the connect of the reactor Abnormal Is there a voltage of DC 264-358 V ? wire, And it is ok, please change the...
- Page 51 When cooling: Is the heat exchanger of the outdoor unit clogged up? Is there shelter around? The LD301 blinks 5 times. When heating: Is the heat exchanger or filter of the indoor unit Since the compressor Clear up the causation load was heavy, the clogged up? Overload lower limit cut...
- Page 52 Abnormal The creepage breaker have already set? The LD301 blinks 14 times Change the compressor and then Does the compressor insulation OK? check the outdoor ele. unit . Active voltage abnormal Normal Change the outdoor ele. unit. Q601,Q602 have malfunction Change the outdoor ele.
- Page 53 (JUDGING BETWEEN GAS LEAKAGE AND CHECKING THE REFRIGERATING CYCLE COMPRESSOR DEFECTIVE) 1. Troubleshooting procedure (No operation, No heating, No cooling) Lighting mode Blinks Blinks Blinks Blinks Blinks Blinks Connect U,V,W phase leads to the Self- 2 times 3 times 4 times 5 times 6 times 8times...
- Page 54 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 55 Cautions 1. Applying power directly to the outdoor unit will cause a rush current to stress the outdoor unit. Therefore, if the indoor unit is not out of order, do not use the method descried in 2). 2. Before making the connections, be sure to turn off the breaker. 3.
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Page 56: Parts List And Diagram
PARTS LIST AND DIAGRAM OUTDOOR UNIT MODEL: RAC-25FXE 、RAC-35FXE... - Page 57 OUTDOOR UNIT JCH-WH PARTS NO Q'TY/UNIT PARTS NAME HWRAC-50WPC A01 BASE HWRAC-25WXD A01 COMPRESSOR HWRAC-50NX2 A04 PUSH NUT HWRAC-25WXD A02 CONDENSER HWRAC-25WXD A03 REVERSING VALVE ASSEMBLY HWRAC-10GH5 A03 SERVICE VALVE HWRAC-50WEA A06 SERVICE VALVE HWRAC-50WED A03 ELECTRIC EXPANSION VALVE HWRAC-25WXD A04 SOUND PROOF HWRAC-25WXD A05 SOUND PROOF...
- Page 58 PARTS LIST AND DIAGRAM OUTDOOR UNIT MODEL: RAC-50FXE...
- Page 59 OUTDOOR UNIT JCH-WH PARTS NO PARTS NAME Q'TY/UNIT HWRAC-50FXE A01 BASE HWRAC-50WXD A02 COMPRESSOR HWRAC-50WEC A08 SOUND PROOF HWRAC-50NX2 A04 PUSH NUT HWRAC-50WXD A03 CONDENSER HWRAC-50WSE A01 REVERSING VALVE ASSEMBLY HWRAC-50WEA A05 SERVICE VALVE HWRAC-50WEA A06 SERVICE VALVE HWRAC-50WED A03 ELECTRIC EXPANSION VALVE HWRAC-50WXD A05 SOUND PROOF...
- Page 60 RAC-2 5FXE JCH-WH NO.0128E RAC-3 5FXE RAC-50FXE...