Hitachi RAS-07G4 Service Manual

Room air conditioner

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Information booklet & user manual (68 pages)

Instruction manual (25 pages)

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SERVICE MANUAL

TECHNICAL INFORMATION

FOR SERVICE PERSONNEL ONLY

SPECIFICATIONS

TYPE

MODEL

POWER SOURCE

TOTAL INPUT

TOTAL AMPERES

COOLING

CAPACITY

DIMENSIONS

(mm)

NET WEIGHT

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

ROOM AIR CONDITIONER

DECEMBER 2003

RAS-07G4

RAS-09G4

RAS-14G4

RAC-07G4

RAC-09G4

RAC-14G4

INDOOR UNIT

OUTDOOR UNIT

RAS-07G4

1 PHASE, 50 Hz, 220-230-240V

590-610-630

(W)

(A)

2.80-2.80-2.80

2.10

(kW)

7,160

(B.T.U./h)

780

280

210

(kg)

9.0

INDOOR UNIT + OUTDOOR UNIT

Refrigeration & Air-Conditioning Division

RAS-07G4/RAC-07G4

RAS-09G4/RAC-09G4

RAS-14G4/RAC-14G4

REFER TO THE FOUNDATION MANUAL

SPECIFICATIONS ----------------------------------------------------- 5

HOW TO USE ---------------------------------------------------------- 8

CONSTRUCTION AND DIMENSIONAL DIAGRAM ------- 30

MAIN PARTS COMPONENT ------------------------------------- 32

WIRING DIAGRAM -------------------------------------------------- 34

PRINTED WIRING BOARD LOCATION DIAGRAM ------- 37

BLOCK DIAGRAM --------------------------------------------------- 39

BASIC MODE --------------------------------------------------------- 41

REFRIGERATING CYCLE DIAGRAM ------------------------- 47

DESCRIPTION OF MAIN CIRCUIT OPERATION --------- 49

AUTO SWING FUNCTION ---------------------------------------- 57

SERVICE CALL Q & A -------------------------------------------- 58

TROUBLE SHOOTING --------------------------------------------- 63

PARTS LIST AND DIAGRAM ------------------------------------ 66

(WALL TYPE)

INDOOR UNIT

OUTDOOR UNIT

RAC-07G4

RAS-09G4

RAC-09G4

1 PHASE, 50 Hz, 220-230-240V

890-900-950

4.20-4.10-4.10

2.90

9,900

700

780

570

280

210

9.0

NO. 0198E

CONTENTS

INDOOR UNIT

OUTDOOR UNIT

RAS-14G4

RAC-14G4

1 PHASE, 50 Hz, 220-230-240V

1060-1090-1120

5.00-5.00-4.90

3.50

11,940

700

780

750

570

280

570

210

280

9.0

After installation

Table of Contents

Summary of Contents for Hitachi RAS-07G4

Page 1: Table Of Contents
NO. 0198E RAS-07G4/RAC-07G4 RAS-09G4/RAC-09G4 SERVICE MANUAL RAS-14G4/RAC-14G4 TECHNICAL INFORMATION REFER TO THE FOUNDATION MANUAL FOR SERVICE PERSONNEL ONLY CONTENTS SPECIFICATIONS ----------------------------------------------------- 5 HOW TO USE ---------------------------------------------------------- 8 CONSTRUCTION AND DIMENSIONAL DIAGRAM ------- 30 MAIN PARTS COMPONENT ------------------------------------- 32 WIRING DIAGRAM -------------------------------------------------- 34...
Page 2 SAFETY DURING REPAIR WORK 1. 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 manufacturers 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 aluminium, stainless steel, etc.) Working table Resistor of 1 M (1/2W) Staple Earth wire Bare copper wire (for body earth) Fig. 3. Grounding of the working table Soldering iron Grounding wire...
Page 5 CAUTION In quiet or stopping 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 nearby, it is recommended to stop the operation and to disconnect the power cord plug from the power outlet for safety.
Page 6: Specifications
SPECIFICATIONS RAS-07G4 RAS-09G4 RAC-07G4 RAC-09G4 RAC-14G4 MODEL RAS-14G4 20 W 30 W FAN MOTOR 20 W 1.5µF, 450 VAC 2.5µF, 450VAC FAN MOTOR CAPACITOR FAN MOTOR PROTECTOR – 5RS080 5PS112 5PS132 COMPRESSOR 20µF, 450 VAC 25µF, 450 VAC COMPRESSOR MOTOR CAPACITOR...
Page 7 MODEL RAS-07G4 / RAC-07G4 and RAS-09G4 / RAC-09G4 Figure showing the installation of Indoor anf Outdoor unit The installation height of indoor unit must be 2.3m or more from floor in a non public area CAUTION The indoor piping should be insulated with the enclosed insulation pipe.
Page 8 MODEL RAS-14G4 / RAC-14G4 Figure showing the installation of Indoor anf Outdoor unit The installation height of indoor unit must be 2.3m or more from floor in a non public area CAUTION above 50mm above 100mm above 100mm 2,300mm or more The indoor piping should be insulated with the enclosed insulation pipe.
Page 9: Safety Precaution
SAFETY PRECAUTION Please read the “Safety Precaution” carefully before operating the unit to ensure correct usage of the unit. Pay special attention to signs of “ Warning” and “ Caution”. The “Warning” section contains matters which, if not observed strictly, may cause death or serious injury. The “Caution” section contains matters which may result in serious consequences if not observed properly.
Page 10 PRECAUTIONS DURING OPERATION The product shall be operated under the manufacturer specification and not for any other intended use. Do not attempt to operate the unit with wet hands, this could cause fatal accident. When operating the unit with burning equipments, regularly ventilate the room to avoid oxygen insufficiency.
Page 11: Names And Functions Of Each Part
RAC-14G4 Drain pipe Condensed water drain to outside. Connecting cord and insulation pipe for piping Air inlet (Back and Left side) Air outlet MODEL NAME AND DIMENSIONS MODEL WIDTH (mm) HEIGHT (mm) DEPTH (mm) RAS-07G4/09G4/14G4 RAC-07G4/09G4 RAC-14G4 – 10 –...
Page 12 INDOOR UNIT INDICATORS FILTER LAMP When the device is operated for a total of about 100 hours, the FILTER lamp lights indicates that it is time to clean the filter. The lamp goes out when the “ (AUTO SWING)” button is pressed while the device is on “STANBY MODE”.
Page 13 NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT REMOTE CONTROLLER This controls the operation of the indoor unit. The range of control is about 7 meters. If indoor lighting is controlled electronically, the range of control may be shorter. This unit can be fixed on a wall using the fixture provided. Before fixing it, make sure the indoor unit can be controlled from the remote controller.
Page 14: Automatic Operation
AUTOMATIC OPERATION The device will automatically determine the mode of operation COOL, or Dehumidify, depending on the initial room temperature. The selected mode of operation will not change when the room temperature varies. Press the FUNCTION selector so that the display indicates (AUTO) mode of operation.
Page 15: Cooling Operation
COOLING OPERATION Use the device for cooling when the outdoor temperature is 22-42°C. If indoor humidity is very high (80%), some dew may form on the air outlet grille of the indoor unit. Press the FUNCTION selector so that the display indicates (COOL).
Page 16: Dehumidifying Operation
DEHUMIDIFYING OPERATION Use the device for dehumidifying when the room temperature is over 16°C. When it is under 15°C, the dehumidifying function will not work. Press the FUNCTION selector so that the display indicates (DEHUMIDIFY). The FAN SPEED is set at LOW automatically. The FAN SPEED button does not work.
Page 17: Fan Operation
FAN OPERATION You can use the device simply as an air circulator. Use this function to dry the interior of the indoor unit at the end of summer. Press the FUNCTION selector so that the display indicates (FAN). Press the (FAN SPEED) button.
Page 18 ADJUSTING THE AIR DEFLECTOR Adjustment of the conditioned air in the upward and downward directions. The horizontal air deflector is automatically set to the proper RESET angle suitable for each operation. The deflector can be swung up and down continuously and also set to the desired angle using the “...
Page 19: To Set The Timer
HOW TO SET THE TIMER Time, Day, Month Set the current month and TIME, DAY, day with the TIMER control After you change the MONTH button. batteries; (current time, day, month) OFF TIMER RESET ON TIMER OFF-Timer Press the (OFF-TIMER) button.
Page 20 Set the current time with the Press the (TIME) button again. Press the TIMER control button. The time indication starts lighting (TIME) button. instead of flashing. The time indication will disappear automatically in 10 seconds. To check the current time setting, press the (TIME) button twice.
Page 21 HOW TO SET THE SLEEP TIMER Set the current time first if it is not set before (see the pages for setting the current time). Press the (SLEEP) button, and the display changes as shown below. Mode Indication 1 hour 2 hours 3 hours 7 hours...
Page 22 Explanation of the sleep timer The device will control the FAN SPEED and room temperature automatically so as to be quiet and good for people’s health. You can set the sleep timer to turn off after 1, 2, 3 or 7 hours. The FAN SPEED and room temperature will be controlled as shown below.
Page 23 HOW TO EXCHANGE THE BATTERIES IN THE REMOTE CONTROLLER Remove the cover as shown in the figure and take out the Push and pull to the old batteries. direction of arrow Install the new batteries. The direction of the batteries should match the marks in the case.
Page 24: Suitable Room Temperature
THE IDEAL WAYS OF OPERATION Suitable Room Temperature Install curtain or blinds Warning It is possible to Freezing temperature reduce heat is bad for health and a entering the waste of electric power. room through windows. Ventilation Effective Usage Of Timer At night, please use the “OFF or ON timer Caution operation mode”, together with your wake up...
Page 25 FOR USER’S INFORMATION The Air Conditioner And The Heat Source In The Room Caution If the amount of heat in the room is above the cooling capability of the air conditioner (for example: more people entering the room, using heating equipments and etc.), the preset room temperature cannot be achieved.
Page 26 ATTACHING THE AIR CLEANSING AND DEODORIZING FILTERS CAUTION Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning, stop operation and switch off the power supply. Open the front panel. Pull up the front panel by holding it at both sides with both hands.
Page 27 MAINTENANCE CAUTION Cleaning and maintenance must be carried out only by qualified service personal. Before cleaning, stop operation and switch off the power supply. AIR FILTER Clean the air filter, as it removes dust inside the room. In case the air filter is full of dust, the air flow will decrease and the cooling capacity will be reduced.
Page 28 Washable Front Panel Remove the front panel and wash with clean water. Wash it with a soft sponge. After using neutral detergent, wash thoroughly with clean water. When front panel is not removed, wipe it with a soft dry cloth. Wipe the remote controller thoroughly with a soft dry cloth.
Page 29 CAUTION Please use earth line. Do not place the earth line near water or gas pipes, lightning-conductor, or the earth line of telephone. Improper installation of earth line may cause electric shock. A circuit breaker should be installed depending on the mounting site of the unit. Without a circuit breaker, the danger of electric shock exists.
Page 30 AFTER SALE SERVICE AND WARRANTY WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS. CONDITION CHECK THE FOLLOWING POINTS Is the fuse all right? When it does not operate Is the voltage extremely high or low? Is the circuit breaker “ON”? Was the air filter cleaned? Does sunlight fall directly on the outdoor unit? When it does not cool well...
Page 31: Construction And Dimensional Diagram
2. Insulated pipes should be used for both the narrow and wide dia. pipes. 3. Piping length is within 15m (RAS-14G4), 10m (RAS-07G4/RAS-09G4) 4. Height different of the piping between the indoor unit and the outdoor unit should be within 5m.
Page 32 MODEL RAC-07G4 / RAC-09G4 Handle Air outlet Air inlet Handle Viewed from P MODEL RAC-14G4 – 31 –...
Page 33: Main Parts Component
MAIN PARTS COMPONENT THERMOSTAT Thermostat Specifications MODEL RAS-07G4/09G4/14G4 THERMOSTAT MODEL OPERATION MODE COOL 16.6 (61.9) INDICATION 16.0 (60.8) TEMPERATURE 24.6 (76.3) INDICATION °C (°F) 24.0 (75.2) 32.6 (90.7) INDICATION 32.0 (89.6) FAN MOTOR Fan Motor Specifications MODEL RAS-07G4/09G4/14G4 RAC-07G4/09G4/14G4 PHASE –...
Page 34 COMPRESSOR MOTOR Compressor Motor Specifications MODEL RAC-07G4/09G4/14G4 COMPRESSOR MODEL 5RS080 5PS112 5PS132 PHASE SINGLE RATED VOLTAGE 220 – 240 V RATED FREQUENCY 50 Hz LOCKED ROTOR CURRENT 45 A POLE NUMBER WHITE ORANGE CONNECTION CAPACITOR 20°C RM = 5.233 RM = 3.192 RM = 2.826 (68°F) RA = 5.621...
Page 35 – 34 –...
Page 36 CIRCUIT DIAGRAM Remote Control Key matrix table Output Input Door open Start/Stop Operation selection Fan speed selection Automatic swing Door shut Start/Stop Super silent cooling – – present time Door open On timer Hour up Hour down • Door shut –...
Page 37: Printed Wiring Board Location Diagram
PRINTED WIRING BOARD LOCATION DIAGRAM MODEL RAS-07G4/09G4/14G4 – 37 –...
Page 38 – 39 –...
Page 39: Basic Mode
BASIC MODE MODEL RAS-07G4/09G4/14G4//RAC-07G4/09G4/14G4 Operation mode Cooling Sensor dehumidification Circulation Automatic Control function ON / OFF switch, ON / OFF switch ON / OFF switch Operation and stop are repeated independent of timer reservations basic mode Operation lamp Operation lamp...
Page 40 Operation mode Cooling Sensor dehumidification Circulation Automatic Control function Set circulation velocity Low (sleep operation) 2 deg up Set temperature 60 minutes ON / OFF Switch Timer reservation Sleep mode Sleep mode Operation lamp • The set temperature • The operation is after sleep shift in switched OFF Timer lamp...
Page 41 Table 1 Specifications (2) Compensation continuously occurs, and for the advance Item RAS-07G4/09G4/14G4 time, the temperature difference between The “Attained” state is monitored and a “Not attained” check is the set temperature without sleep shift Automatic done to revise the compensation time (HT).
Page 42: Refrigerating Cycle Diagram
REFRIGERANT CYCLE DIAGRAM MODEL RAS-07G4/RAC-07G4 COMP S — TANK CONDENSER 3S — VALVE REVERSING VALVE EVAPORATOR HEATING & COOLING CAPILLARY STRAINER 2S—VALVE CHARGING STRAINER PIPE MODEL RAS-09G4/RAC-09G4 COMP S-TANK CONDENSER 3S-VALVE REVERSING VALVE EVAPORATOR HEATING HEATING & CAPILLARY COOLING CAPILLARY...
Page 43 MODEL RAS-14G4/RAC-14G4 COMP S — TANK ACCUMULATOR CONDENSER 3S — VALVE REVERSING VALVE EVAPORATOR HEATING HEATING & CAPILLARY COOLING CAPILLARY STRAINER 2S — VALVE CHARGING CHECK VALVE STRAINER PIPE – 48 –...
Page 44: Description Of Main Circuit Operation
DESCRIPTION OF MAIN CIRCUIT OPERATION 1. ON / OFF The “ON / OFF” and “Timer reserve button” and “Sleeping” function independently. Their operations are shown in Fig. 1-1. Start Stop Start ON/OFF button Timer reserve button (Sleeping) When OFF timer (sleeping) is set Operation lamp...
Page 45 2. Reset Circuit Micro computer (AX-3U) Q202 Q201 C202 DC12V Line DC5V Line Base POWER ON POWER OFF Micro computer Pin 17 The reset circuit is used to reset the program to its initial settings when the power is turned on or when the power is recovered after a power failure.
Page 46 3. Buzzer Circuit R801 Micro computer (AX-3U) Q302 Buzzer output Fig. 3-1 Buzzer Circuit When the buzzer sounds, an approx. 3.9kHz square signal is output from buzzer output pin of the micro computer. After the amplitude of this signal has been set to 12Vp-p by a Metal diaphragm Pizoelectric element transistor, it is applied to the buzzer.
Page 47 5. Receive circuit Micro computer (AX-3U) Q141 R141 R212 WIRELESS I/P R209 C702 Receiver Unit R211 Infrared signals from the wireless remote controller are received by the light receiving unit and output after being amplified and shaped. 6. Service Operation Circuit Micro computer R614 (AX-3U)
Page 48 7. Auto Sweep Motor Circuit CN12 Auto sweep motor for horizontal air deflectors Micro computer (AX-3U) Rotor IC501 Fig. 7-1 Auto Sweep Motor Circuit (Horizontal air deflectors) Fig. 7-1 shows the Auto sweep motor drive circuit; the signals shown in Fig. 7-2 are output from pins –...
Page 49 8. Room Temperature Thermistor Circuit Fig. 8-1 shows the room temperature The voltage at A depends on the room thermistor circuit. temperature as shown in Fig. 8-2. Room Micro temperature computer thermistor (AX-3U) R309 Room Thermistor C302 R310 Fig. 8-1 Room temperature (ßC) Fig.
Page 50 10. Temporary Switch TEMPORARY SWITCH TELECON (AX-3U) R609 MICRO COMPUTER Fig. 10-1 The temporary switch is used to operate the air conditoner temporarily when the wireless remote control is lost or faulty. The air conditioner operates in the previous mode at the previously set temperature. However, when the power switch is set to OFF, it starts automatic operation.
Page 51 PWM output Voltage at I Voltage at J Output voltage Fig. 11-2 – 56 –...
Page 52 – 57 –...
Page 53: Service Call Q & A
SERVICE CALL Q & A Cooling operation While cooling, Check whether frost sticks If cooling is performance compressor sometimes stops on the heat exchanger of in- when the room temperature abruptly. door unit or not. is low, frost may stick on the Wait for 3 –...
Page 54 Automatic operation automatic According to the room operation mode determined? temperature, cooling or dehumidifying operation is automatically selected. Cooling: When room temperature is approx. 27°C or higher Dehumidifying: When room temperature is between approx. 23°C and 27°C At an automatic operation, The fan speed is automati- changing the fan speed cally determined.
Page 55 Common, etc. There difference There may be a difference between room between room temperature setting and temperature setting and actual room temperature. actual room temperature on account room structure, air flow, etc. If there is a difference from the room temperature, adjust the set temperature to keep living space at a comfortable temperature.
Page 56 Wireless remote controller 1) When the “Automatic” 1) When operation room temperature operation mode mode is “Automatic”, the sensing thermistor in the selected, “Automatic” speed indoor unit detects the room does not change by automatically fixed to temperature and, according pressing the fan speed “Automatic”.
Page 57 In spite of timer “Preprogram”, Isn’t the time over the pre- time setting programmed time? extinguished. As soon as the prepro- grammed time is reached, the time setting disappears. After selecting “Dehumidifying” “Dehumidifying” operation operation, the “LO” fan speed” mode, the fan speed mode is forcibly selected.
Page 58: Trouble Shooting
TROUBLE-SHOOTING No cooling *1 Before using the service switch, No operation at all. disengage and engage the plug. Do not Operates by setting the service operate the remote controller. switch to forced cooling? Check the following parts and replace if faulty 1) Current fuse Remove and check the continuity across.
Page 59 *4 Wait for 3 minutes before forced Check the circuit board inside parts. re-operation by the service switch. Replace faulty part When checking, carry out a self diagnosis by indoor indicator lamp. CN6 BLUE-RED (V) RAS-07G4 RAS-09G4 RAS-14G4 RAC-07G4 RAC-09G4 RAC-14G4 Fan Speed...
Page 60 Timer-Lamp, break-down checking in blinking sign. Check the break-down factor from the frequency of timer-lamp blinking. Mode of Timer-Lamp blinking Indication Factor Estimated Break-Down Part Force cooling operation Check force cooling switch at indoor electrical. Unit is under forcible operation or –...
Page 61: Parts List And Diagram
PARTS LIST AND DIAGRAM INDOOR UNIT MODEL : RAS-07G4 / RAS-09G4 / RAS-14G4 23 25 – 66 –...
Page 62 MODEL RAS-07G4 PART N0. Q’TY / UNIT PARTS NAME RAS-07G4 HWRAS-25YH4 CABINET HWRAS-25YH4 MOUNTING PLATE PMRAS-07GH4 FAN MOTOR HWRAS-25YH4 TANGENTIAL FAN HWRAS-25YH4 P-BEARING ASSY HWRAS-25YH4 FAN MOTOR BASE PMRAS-07GH4 CYCLE ASSY HWRAS-25YH4 FAN COVER HWRAS-25YH4 PIPE SUPPORT HWRAS-25YH4 DRAIN PAN ASSY...
Page 63 MODEL RAS-09G4 PART N0. Q’TY / UNIT PARTS NAME RAS-09G4 HWRAS-25YH4 CABINET HWRAS-25YH4 MOUNTING PLATE PMRAS-07GH4 FAN MOTOR HWRAS-25YH4 TANGENTIAL FAN HWRAS-25YH4 P-BEARING ASSY HWRAS-25YH4 FAN MOTOR BASE PMRAS-07GH4 CYCLE ASSY HWRAS-25YH4 FAN COVER HWRAS-25YH4 PIPE SUPPORT HWRAS-25YH4 DRAIN PAN ASSY HWRAS-25YH4 AUTO SWEEP MOTOR HWRAS-25YH4...
Page 64 MODEL RAS-14G4 PART N0. Q’TY / UNIT PARTS NAME RAS-14G4 HWRAS-25YH4 CABINET HWRAS-25YH4 MOUNTING PLATE PMRAS-07GH4 FAN MOTOR HWRAS-25YH4 TANGENTIAL FAN HWRAS-25YH4 P-BEARING ASSY HWRAS-25YH4 FAN MOTOR BASE PMRAS-07GH4 CYCLE ASSY HWRAS-25YH4 FAN COVER HWRAS-25YH4 PIPE SUPPORT HWRAS-25YH4 DRAIN PAN ASSY HWRAS-25YH4 AUTO SWEEP MOTOR HWRAS-25YH4...
Page 65 PARTS LIST AND DIAGRAM INDOOR UNIT MODEL : RAC-07G4 / RAC-09G4 – 70 –...
Page 66 MODEL RAC-07G4 PART N0. Q’TY / UNIT PARTS NAME RAC-07G4 PMRAC-07GH4 STRAINER (CAPILLARY) PMRAC-07GH4 STRAINER (CONDENSOR) PMRAC-05CV FAN MOTOR SUPPORT PMRAC-10C8 FAN MOTOR PMRAC-10CV6 PROPELLER FAN PMRAC-07CH2 CABINET PMRAC-05CV SIDE PLATE (R) PMRAC-05CV SIDE PLATE (L) PMRAC-05CV HANDLE PMRAC-09CHA1 903 D-GRILL PMRAC-07GH4 COMPRESSOR...
Page 67 MODEL RAC-09G4 PART N0. Q’TY / UNIT PARTS NAME RAC-09G4 PMRAC-09GH4 CHECK VALVE PMRAC-07GH4 STRAINER (CAPILLARY) PMRAC-09GH4 STRAINER (CONDENSOR) PMRAC-05CV FAN MOTOR SUPPORT PMRAC-10C7 FAN MOTOR PMRAC-10CV6 PROPELLER FAN PMRAC-09GH4 CABINET PMRAC-05CV SIDE PLATE (R) PMRAC-05CV SIDE PLATE (L) PMRAC-05CV HANDLE PMRAC-09CHA1 903 D-GRILL...
Page 68 PARTS LIST AND DIAGRAM OUTDOOR UNIT MODEL : RAC-14G4 – 73 –...
Page 69 MODEL RAC-14G4 PART N0. Q’TY / UNIT PARTS NAME RAC-14G4 KPNT1 PUSH NUT PMRAC-14GH4 COMPRESSOR RAC-2226HV COMPRESSOR RUBBER PMRAC-25NH4 VALVE (2S) PMRAC-25NH4 VALVE (3S) PMRAC-25NH4 CONDENSOR PMRAC-51CA1 FAN MOTOR SUPPORT PMRAC-18C7 FAN MOTOR PMRAC-25CNH2 902 PROPELLER FAN PMRAC-18CVP2 901 TERMINAL BOARD PMRAC-09GH4 COMPRESSOR CAPACITOR PMRAC-10C7...
Page 70 RAS-07G4 / RAC-07G4 PM NO. 0198E RAS-09G4 / RAC-09G4 RAS-14G4 / RAC-14G4 Printed in Malaysia...

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Hitachi RAS-07G4 Service Manual

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TECHNICAL INFORMATION

ROOM AIR CONDITIONER

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