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Hitachi RAS-18YH5 Service Manual
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Hitachi RAS-18YH5 Service Manual

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SERVICE MANUAL

TECHNICAL INFORMATION

FOR SERVICE PERSONNEL ONLY
SPECIFICATIONS
TYPE
MODEL
POWER SOURCE
TOTAL INPUT
TOTAL AMPERES
COOLING
CAPACITY
TOTAL INPUT
TOTAL AMPERES
HEATING
CAPACITY
(mm)
NET WEIGHT
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
FEBRUARY 2006 Hitachi Household Appliances (Wuhu) Co.,Ltd.
(W)
(A)
(kW)
(B.T.U./h)
(W)
(A)
(kW)
(B.T.U./h)
W
H
D
(kg)

ROOM AIR CONDITIONER

INDOOR UNIT + OUTDOOR UNIT
AW
RAS-18YH5 /
RAC-18YH5
REFER TO THE FOUNDATION MANUAL
SPECIFICATIONS

HOW TO USE

SERVICE CALL Q & A
PROCEDURE FOR DISASSEMBLY AND REASSEMBLY
DC INVERTER (WALL TYPE)
INDOOR UNIT
RAS-18YH5
1 PHASE, 50Hz, 220-230V
550 (155 - 1,010)
2.81
2.00 (0.90 - 2.50)
6,820 (3,070 - 8,530)
580 (115 - 970)
2.81
2.50 (0.90 - 3.20)
8,530 (3,070 - 10,920)
780
280
210
9.5
NO. 0010E
CONTENTS
OUTDOOR UNIT
RAC-18YH5
750 (+91)
548
(+47)
288
35
After installation
4
5
15
17
19
20
25
27
36
37
65
68
94
96

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Summary of Contents for Hitachi RAS-18YH5

  • Page 1: Service Manual

    CAPACITY (B.T.U./h) 8,530 (3,070 - 10,920) 750 (+91) DIMENSIONS (mm) (+47) NET WEIGHT (kg) After installation SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT ROOM AIR CONDITIONER INDOOR UNIT + OUTDOOR UNIT FEBRUARY 2006 Hitachi Household Appliances (Wuhu) Co.,Ltd.
  • Page 2 AFETY DURING REPAIR WORK . In order to disassemble and repair the unit in question, be sure to disconnect the power cord plug from the power outlet before starting the work. 2. If it is necessary to replace any parts, they should be replaced with respective genuine parts for the unit, and the replacement must be effected in correct manner according to the instructions in the Service Manual of the unit.
  • 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 1M 1/2W) Staple Earth wirte ig.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 operation or stopping the running, 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 to disconnect the power cord plug from the power outlet for safety.
  • Page 6 PECIFICATION RAS-18YH5 RAC-18YH5 ODEL FAN OTOR 40 W PW DC35V FAN OTOR CAPACITOR FAN OTOR PROTECTOR CO PRESSOR Ñ ASC092SD-A8JT1 CO PRESSOR OTOR CAPACITOR OVERLOAD PROTECTOR OVERHEAT PROTECTOR FUSE (for ICROPROCESSOR) 3.0A POWER RELAY POWER SWITCH TE PORARY SWITCH SERVICE SWITCH...
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  • Page 17 ONSTRU TION AND DIMENSIONAL DIAGRAM MODEL R S-18YH5 INDOOR UNIT Unit : mm Service space Top air suction grill Mounting plate Front panel Cabinet Discharge grill Horizontal air diflector Drain When piping is drawn from the left side, exchange the drain hose for the drain cap 17.5 Drain hose...
  • Page 18 MODEL RAC-18YH5 OUTDOOR UNIT Unit : mm 19.5 27.5 Handle Air outlet Air suction Handle Rear side Air suction Holed for anchor bolt (2- 12 16 slots for 8.0 bolt) Notch for anchor bolt (for 2- 8.0 bolt) Fixing hole Drain hole Drain hole ervice space...
  • Page 19 AIN PARTS CO PONENT THER OSTAT hermostat Specifications MODEL RAS-18YH5 HERMOS A MODEL OPERA ION MODE COOL 16.7 (62.1) 18.7 (65.7) INDICA ION 16.0 (60.8) 19.3 (66.7) EMPERA URE 24.7 (76.5) 26.7 (80.1) INDICA ION ûC (ûF) 24.0 (75.2) 27.3 (81.1) 32.7 (90.9)
  • Page 20 OMPRESSOR MOTOR Compressor otor Specifications ODEL RAC-18YH5 CO PRESSOR TYPE ASC092SD-A8JT1 POWER SOURCE DC 220 - 350 V OUTPUT 750W WHITE WINDING YELLOW 2 = 1.15 20 ûC RESISTANCE (½ ) 75 ûC 2 = 1.40 YELLOW WHITE CO PRESSOR FRONT SIDE OF OUTDOOR UNIT AUTION When the refrigerating cycle has been operated for a long time with the capillary tubes clogged or crushed...
  • Page 21 IRING DIAGRAM ODEL RAS-18YH5 / RAC-18YH5 CAUTION The marked parts are very important ones for safety. – 19 –...
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  • Page 23 RAS-18YH5 MODEL Control P.W.B. A u t o S w e e p M o t o r Indicating P.W.B. (Display) Light Receiving U n i t I R R – 21 –...
  • Page 24 MODEL RAC-18YH5 SELF-CHECK SELF-MODE SERVICE SW – 23 –...
  • Page 25 LOCK DIAGRAM MODEL RAS-18YH5 RAC-18YH5 INDOOR UNIT OUTDOOR UNIT Outdoor DC fan motor Power source 1¿ 50Hz 220-230V HARMONICS PO ER PO ER RELAY IMPROVEMENT RECTIFIER S ITCH CIRCUIT Inrush current DC compressor Protection circuit motor Rotor magnetic pole position...
  • Page 26 ASIC MODE MODEL RAS-18YH5 – 27 –...
  • Page 27 RAS-18YH5 LABEL NA E VALUE 3500 min Ð1 3500 min MAX2 Ð1 2950 min Ð1 2900 min BEMAX Ð1 3300 min CMAX Ð1 3300 min CMAX2 Ð1 2500 min CSTD Ð1 2500 min CKYMAX Ð1 2500 min CJKMAX Ð1...
  • Page 28 Table 1 Thermo judgment Item Temperature Thermo judgment (ON) 30¡C CLMXTP temperature Thermo judgment (OFF) 32¡C Thermo judgment (ON) 32¡C Outdoor temperature Thermo judgment (OFF) 33¡C Table 2 Compressor rpm Temperature Calculated difference compressor rpm (with shift value) 1.66¡C 2500 min Ð1 button 2.00¡C...
  • Page 29 Cooling Sleep Operation Dehumidifying Operation Room temperature 7 hr 1 hr et to 7 hours leep button Operation lamp Timer lamp Remote control ( leep) ON ee basic tart button Indoor fan operation leep Lo Outdoor fan Horizontal air deflector Horizontal Facing down 2 mi n 30sec.
  • Page 30 Table 3 Compressor rpm asic Heating Operation Temperature Calculated difference compressor rpm (with shift value) 900 min .66¡C Ð 2400 min 2.00¡C Ð 2900 min 2.33¡C Heating set temperature Ð (remote control set temperature (+)) 3400 min Ð 2.66¡C 3900 min 3.00¡C Ð...
  • Page 31 Heating Sleep Operation eversing Valve Defrosting Preheating released Sleep button Reversing valve (cooling "on" model 　 min. 30sec. Sleep Lo Notes: (1) The defrosting inhibit period is set as shown in the diagram below. When defrosting has finished once, the inhibit period is newly set, based on the outdoor temperature when the compressor was started.
  • Page 32 EF IGE ATING CYCLE DIAG AM ODEL RAS-18YH5 RAC-18YH5 – 36 –...
  • Page 33 ESCRIPTION OF MAIN CIRCUIT OPERATION MODEL RAS-18YH5 1. Reset Circuit NORMAL : HI RESET : LO Microcomputer IC5 1 Fig. 1-1 Power "OFF" Power "ON" Voltage 5.0V Voltage supply to of IC5 1 Reset enter at 4. V Reset release at 4.4V Voltage 5.0V...
  • Page 34 . Receiver Circuit R212 L201 R141 ZD141 C212 C211 RECEIVER I/P R211 R611 C611 Microcomputer Fig.2-1 IRR (light receiving unit) receives the infrared signal from the wireless remote controller. The receiver amplifie and shapes the signal and outputs it. 3. Buzzer Circuit R721 IC711 Microcomputer...
  • Page 35 . Auto Sweep Motor Circuit Auto sweep motor for horizontal air defectors IC711 Microcomputer Rotor ig.4-1 ig. 4-1 shows the Auto sweep motor drive circuit; the signals shown in ig.4-2 are output from pin 15 - 18 of microcomputer. Step width : 10ms Micro computer pins Horizontal air deflectors ig.4-2 Microcomputer Output Signals...
  • Page 36 . Initial Setting Circuit (IC401) When power is supplied, the microcomputer reads the data in IC401 or IC402 (E PROM) and sets the preheating activation value and the rating and maximum speed of the compressor, etc. to their initial values. Data of self-diagnosis mode is stored in IC401 or IC402;...
  • Page 37 . Fan Motor Drive Circuit CN10 Micro computer DC fan motor output Fan motor R751 C751 DC fan motor Speed feedback R631 C631 Fig. 7-1 oltage at point A Waveform T1 = Low speed T2 = High speed oltage at point B Waveform oltage at point C Waveform...
  • Page 38 MODEL RAC-18YH5 1. The electrical parts for the outdoor unit is composed of two P .W.B. (a power P .W.B. and main P .W.B.) and a harmonics improvement circuit as shown in Fig. 1-1. ¥ MA N P.W.B. This P .W.B. is equipped with the rectification diode, DC fan motor control circuit and the circuits around the micro computer which take various controls.
  • Page 39 . Power circuit his circuit is to convert the power from AC which is provided from the terminal A and B to DC voltage And produces an AC current which does not exceed the harmonic amplitude limit of the IEC61000-3-2. When the compressor is stopped, the AC voltage becomes about 300 V and while the compressor operates, it is about 280 V.
  • Page 40 (3) C021 and C022 This smoothes the voltage rectified for operating the compressor. When the input voltage is taken for the sine wave as shown in the top of Fig. 2-4, it is rectified by the DB2 and becomes the waveform as shown in the middle of Fig.
  • Page 41 . Indoor/Outdoor Interface Circuit he interface circuit superimposes an interface signal on the DC 35V line to perform communications between indoor and outdoor units. his circuit consists of a transmitting circuit which superimposes an interface signal transmit from the microcomputer on the DC 35V line and a circuit which detects the interface signal on the DC 35V line.
  • Page 42 ig. 3-1 shows the interface circuit used for the indoor and outdoor microcomputers to communicate with each other. ig. 3-1 – 46 –...
  • Page 43 Outdoor microcomputer Pin Indoor microcomputer Pin 5V DC line 100ms. 1 frame Leader Fig. -2 Voltages Waveforms of Indoor / Outdoor Microcomputers (Outdoor to Indoor Communications) Outdoor microcomputer Pin Indoor microcomputer Pin 5V DC line 4.95ms. Transmit/receive 1 frame switching time Fig.
  • Page 44 – 48 –...
  • Page 45 Compressor minimum rotation speed(4 MSB) Compressor minimum rotation speed(3) Compressor minimum rotation speed(2) Compressor minimum rotation speed(1) Compressor minimum rotation speed( LSB) OVL up Fan-7-step request 15/2 (A) Actual compressor rotation speed(5 MSB) Compressor command speed(7 MSB) Actual compressor rotation speed(4) Compressor command speed(6) Actual compressor rotation speed(3) Compressor command speed(5)
  • Page 46 . IPM (Intelligent Power Module) ¥ ig.4-1 shows the intelligent power module and its peripheral circuit. The three transistors on the positive side are called the upper arm, and the three transistors on the negative side, the lower arm. ig. 4-1 Intelligent power module circuit (U is ON, V is ON) –...
  • Page 47 Intelligent power module switches power supply current according to position of the compressor motor rotor. The switching order is as shown in Fig. 4-2. Ð At point E : U is ON, V is ON (circuit in Fig. 4-1) Ð At point F : U is chopped (OFF), V is ON (circuit in Fig.4-4)
  • Page 48 Ð Fig. 4-4 Power mo ule circuit (U is OFF, V is ON) Since current flows at point B only when U transistor an V transistor is ON, the current waveform at Ð point B becomes intermittent waveform as shown in Fig.4-3. Since current at point B is approximately proportional to the input current of the air con itioner, input current is controlle by using DC current (I ) etection resistor.
  • Page 49 ¥ IPM drive circuit The inverter driving device (IGBT) and the drive circuit are built in the IPM. The IPM receives the signal from the microcomputer and convert it to 0 Ð 15 V signal to drive the IGBT. When the unit operates at low speed, a chopper signal is emitted from the micro computer as shown in Fig.
  • Page 50 . Power Circuit for P.W.B. Fig. 5-1 shows the power circuit for P .W.B. Fig. 5-1 In the power circuit for P .W.B., power supply for microcomputer, peripheral circuits, and IPM driver circuit and, as well as DC 35V, are produced by switching power circuit. Switching power circuit performs voltage conversion effectively by switching transistor IC1 to convert DC 330V voltage to high frequency of about 20kHz to 200kHz.
  • Page 51 The voltage specification of the power circuit is as follows. <Check points> Output Voltage Main load Measuring points Potential failure modes spec. Ð 11-13V MAIN P .W.B. (CN3, CN4) R701 (Ò12VÓ display) R006 (Ò0VÓ display) The unit wonÕt operate C21 (Ò12VÓ display) J27, J30 MAIN P .W.B.
  • Page 52 . Microcpomputer's Peripheral Circuits -1. Overload control circuit (OVL control circuit) Overload control is to decrease the speed of the compressor and reduce the load when the load on the air conditioner increases to an overload state, in order to protect the compressor, electronic components and power breaker.
  • Page 53 Detection urrent Resistor Direct urrent R003 R004 Q501 R513 Power P.W.B. R514 R906 R613 Microcomputer R612 R248 R245 R222 R005 D001 R287 D208 Reset output Reset R288 R252 0V 0V 0V Main P.W.B. Fig. 6-2 (1) IS OVL urrent transformer T1 reads the input flowing current and detected to the microcomputer as a voltage signal.
  • Page 54 R003,R004,R608,R613, detect the C voltage at the power circuit. The microcomputer receives a C voltage and applies correction to the overload set value so the C current will be low when the C voltage is high. (Since the load level is indicated by the C voltage multiplied by C current, R247, R248 and R249 are provided to perform the same overload judgement even when the voltage varies.) C voltage : Low C current : High...
  • Page 55 -2. Reset Circuit MAIN P.W.B. R287 D208 Microcomputer RESET OUT. R252 RESET C204 IC5(1/2) R288 0V 0V 0V 0V Fig. -7 The reset circuit initializes the microcomputer program when Power is ÒONÓ from ÒOFFÓ. Low voltage at pin 48 resets the microcomputer , and HI activates the microcomputer. Fig.
  • Page 56 . Temperature Detection Circuit AIN P.W.B. O.H. thermistor R304 C304 R301 DEF. thermistor icrocomputer R305 C303 R302 Outdoor temperature thermistor CN10 R306 Outdoor temperature C302 R303 Fig. 7-1 The Over heat thermistor circuit detects the temperature at the surface of the compressor head, the Defrost. thermistor circuit detects the defrosting operation temperature.
  • Page 57 . Reversing valve control circuit C-35V ower .W.B. MAIN .W.B. Reversing valve R701 D701 Q701 Microcomputer CN4A CN4B Q701 R705 R706 DC voltmeter or multimeter D-0V Fig. 8-1 Reversing valve control circuit will switch reversing valve ON/OFF(cooling ON) according to instruction from indoor microcomputer depending on the operation condition shows in Table 8-1.
  • Page 58 . Electric expansion valve control circuit POWER P.W.B. MAIN P.W.B. B-12V B-12V CN15 B-12V R403 R404 R401 Microcomputer PQ401 R293 Valve4 PQ402 R294 Valve3 Electric PQ403 R295 Valve2 expansion valve PQ404 Valve1 CN4B CN4A 12 13 C401 B-0V Fig. 9-1 ¥...
  • Page 59 0. Outdoor DC Fan Motor control circuit his model uses DC Fan Motor which has a controller circuit built in the Motor. his DC Fan Motor will rotate by control voltage apply to Vsp input. (Voltage range: 1.7 to 7V DC) Vsp high : Faster ;...
  • Page 60 Reference > When operation stop with LD301 blinks 12 times, it may be caused by faulty DC fan motor. In this case, please check CN6 and CN12 connection first. It makes Fan Motor Lock also if those connectors are in misconnection. DC Fan Motor has broken invites 1A Fuse burned.

  • Page 61: Dehumidifying Mode

    SERVI E ALL Q & A MODEL RAS-18YH5 RAC-18YH5 OOLING MODE he compressor has Check if the indoor heat If the air conditioner operates stopped suddenly during exchanger is frosted. in cooling mode when it is cooling operation. Wait for 3-4 minutes cold, the evaporator may get until it is defrosted.
  • Page 62 UTO FRESH DEFROSTING uto Fresh Defrosting is carried out : the fter the ON/OFF button is pressed system checks the outdoor heat exchanger to stop heating, the outdoor unit is and defrosts it as necessary before stopping still working with the OPER TION operation.
  • Page 63 When the ÒSleepÓ timer is set during (1) he temperature arrives at the preset indoor operation, temperature and the air conditioner unit is (1) he indoor fan wonÕt rotate. temporarily stopped. Within about 3 minutes, (No air comes from the unit) the fan starts rotation.
  • Page 64 TROUBLE SHOOTING RAC-18YH5 PRECAUTIONS FOR CHECKING Power inlet WARNING Remember that voltage of 175 V is applied to the 0V line on the P.W.B. or the like as shown in the right diagram. Always keep your hands and metallic things away WARNING from the cabinet.
  • Page 65 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 (400µF x 2). • During continuity check for each circuit part of the outdoor unit, be sure to discharge the smoothing capacitors.
  • Page 66 STRUCTURE OF AN INDOOR UNIT ELECTRIC PARTS MODEL RAS-18YH5 ELEC. COVER FIXTURE SCREW FIXTURE SCREW Removing electrical parts When installing the parts, use 1. Remove the electrical parts cover. caution not to pinch any code 2. Remove the connectors from the CN1 (heat exchange between the part and cabinet.
  • Page 67 ther Cautions (1) Cautions concerning ICP (IC Protector) 1. Use due caution for short circuit in servicing. Short circuit will open the CP immediately . 2. When the CP opens, remove the cause of this phenomenon and replace the CP . f the remedy is improper, the CP may open again.
  • Page 68 HE SUPPOR FUNC ION OF FAILURE DIAGNOSIS Function ame Description Self-diagnosis indication function ¥ The Òtimer lampÓ indicates a mode of failure detected <Indicating a failure on the indoor on the indoor or outdoor unit side by blinking unit side> frequency.
  • Page 69 TROUBLESHOOTI G WHE TIMER LAMP BLI KS. MODEL RAS-18YH5 Perform troubleshooting according to the number of times the indoor timer lamp and outdoor LD301 blink. SELF-DIAG OSIS LIGHTI G MODE MODEL RAS-18YH5 Blinking of Timer lamp Reason for indication Possible cause...
  • Page 70 ELF-DIAGNO I LIGHTING MODE ODEL RAC-18YH5 INTELLIGENT POWER ODULE LD301 SELF DIAGNOSIS LA PS LD302 SERVICE SWITCH LD303 – 74 –...
  • Page 71 OUTDOO UNIT emove the compressor connector. NTELL GENT POWER MODULE LD301 SELF D AGNOS S LAMPS LD302 LD303 SERV CE SW TCH ¥ Check the drive f your first attempt With the unit set in the operating circuit ( MP) using fails, wait 3 minutes state, press the start/stop the PRD checker.
  • Page 72 HE KING THE INDOOR/OUTDOOR UNIT ELE TRI ALPARTS AND REFRIGERATING Trouble shoot according to the Is the indoor unit "timer lamp" blinking? self-diagnosis lighting mode. Open the indoor unit and check the voltage Run the unit using the following remote controller settings: between pins Nos.
  • Page 73 HE KING THE INDOOR UNIT ELE TRI AL PARTS . Power does not come on (no operation) Is AC220-230V being generated Is AC220-230V being generated at Check AC outlet and breaker, and between terminals A and B on the AC outlet? repair any defective part.
  • Page 74 . Indoor fan does not operate (others are normal) The microcomputer fan PWM Can the fan be stopped by remote Replace the microcomputer . output (at pin 4 ) is 1 - 5V. control? Replace the fan motor . Replace the microcomputer . Perform final operation check.
  • Page 75 . Check the control P.W.B. (power circuit) Is 35V or 20V being output Check to see if the connection cables are at pin 5 relative to 0V at disconnected or reversed. pin 3 of CN3? If normal, check the outdoor unit P.W.B. Is 12V or 7V being output Is ICP1 normal? at (+) relative to 0V at (-) of...
  • Page 76 HE KING THE REMOTE ONTROLLER Is battery polarity correct? Install the battery in the correct polarity. Is the battery check sign + Ð Replace the battery. flashing? urn on an AM radio, bring the remote control switch within 15 cm of the radio, and press the ON/OFF button.
  • Page 77 ARNING PRECAUTIONS FOR SERVICING Be sure that the power switch is turned off or the power cable is disconnected before servicing. Removing the P. .B.s. System Configuration of Outdoor Unit Electrical Parts. The outdoor unit electrical parts consist of two P.W.B.s as shown in the figure. <Main P.W.B.
  • Page 78 C. Power Factor Improvement capacitor] Designed to improve power factor. To replace the capacitor, remove the power P .W.B. and then: 1. Remove two screws fastening the capacitor seat. 2. Slide the capacitor seat in the direction of the arrow. Sliding Direction –...
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  • Page 86 HE KING THE REFRIGERATING Y LE (JUDGING BETWEEN GAS LEAKAGE AND COMPRESSOR DEFECTIVE) . 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...
  • Page 87 HOW TO OPERATE USING THE SERVICE SWITCH THE OUTDOOR UNIT ODEL RAC -18YH5 1.Turn off the power switch. 2. Remove the electrical box cover. 3.Turn on the power switch 4. After waiting for 30 seconds, push the service switch for a second. D303 (red) will light and the unit will operate in the forced cooling mode at this time.
  • Page 88 PM ( ntelligent Power Module) D AGNOS S SSM1001MA ircuit diagram of ollector the device Emitter ircuit diagram of the module Terminals symbol mark of the module See next page for measuring value using multimeter – 92 –...
  • Page 89 To find the malfunction either the power supply of power P.W. . or internal IC, please follow the – 93 –...

  • Page 90: Front Panel

    Procedure for Disassembly and Reassembly NDOOR UN T MODEL RAS-18YH5 . Front Panel 3. Control P.W.B. and Indicating P.W.B. (1) Pull up the washable panel by holding it at both (1)Remove each connector from the lead wire. lower sides with both hands.
  • Page 91 . Tangential air flow fan and fan motor OUTDOOR UNIT MODEL RAC-18YH5 1. Electrical parts 1)Remove two screws locking the drain pan. 2)Press to lower the hook at the center of the 1)Remove the service value cover lock screws unit a little and pull the claw forward to remove and lower the cover to remove it.
  • Page 92 ARTS LIST AND DIAGRAM NDOOR UN T MODEL: RAS-18YH5 – 96 –...
  • Page 93 INDOOR UNIT ARTS NO. Q'TY ARTS NAME RAS-18YH5 HWRAS-25YH5 CABINET HWRAS-25YH5 VERTICAL AIR DEFLECTOR-L HWRAS-25YH5 VERTICAL AIR DEFLECTOR-R HWRAS-25YH5 FAN MOTOR 25W 1.1kg HWRAS-25YH4 TANGENTIAL AIR FLOW FAN HWRAS-25YH4 FAN SU ORT ASSEMBLY HWRAS-25YH4 FAN COVER HWRAS-25YH4 FAN MOTOR SU ORT...
  • Page 94 OUTDOOR UNIT MODEL: RAC-18YH5 – 98 –...
  • Page 95 OUTDOOR UNIT ARTS No. Q'TY ARTS NAME RAC-18YH5 HWRAC-E14H2 BASE HWRAC-E08H COM RESSOR 750W 8.1kg HWRAC-25YH4 COM RESSOR RUBBER HWRAC-25YH4 USH NUT HWRAC-D10EX2 CONDENSER HWRAC-E08H REVERSING VALVE (WITH COIL) HWRAC-E08H SERVICE VALVE ASSEMBLY HWRAC-E08H ELECTRIC EX ANSION VALVE HWRAC-E08H SOUND ROOF COVER ASSEMBLY HWRAC-25YH4 O.L.R COVER HWRAC-25YH4...
  • Page 96 RAS-18YH5 / RAC-18YH5 AW NO. 0010E Printed in Japan (TSK)

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