Hitachi airHome 300 RAR-M0A6 Service Manual

Indoor/outdoor unit

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SERVICE MANUAL

CH SERIES

RAK-CH10PCASV/RAC-CH10PCASV

RAK-CH13PCASV/RAC-CH13PCASV

CONTENTS

SPECIFICATIONS

HOW TO USE

CONSTRUCTION AND DIMENSIONAL DIAGRAM

MAIN PARTS COMPONENT

WIRING DIAGRAM

CIRCUIT DIAGRAM

PRINTED WIRING BOARD LOCATION DIAGRAM

BLOCK DIAGRAM

BASIC MODE

REFRIGERATING CYCLE DIAGRAM

AUTO SWING FUNCTION

DESCRIPTION OF MAIN CIRCUIT OPERATION

SERVICE CALL Q & A

PARTS LIST AND DIAGRAM

Instruction manual

To obtain the best performance, please read this instruction manual completely.

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INDOOR UNIT

RAK-CJ10PCAST

RAK-CH10PCASV

RAK-CJ13PCAST

RAK-CH13PCASV

OUTDOOR UNIT

Page 9

Page 11

Page 32

Page 34

Page 36

Page 37

RAC-CJ10PCAST

Page 45

RAC-CH10PCASV

RAC-CJ13PCAST

Page 48

RAC-CH13PCASV

Page 49

Page 55

Page 56

Page 57

Page 69

Page 104

RAR-M0A6

Page 1~26

หน ้า 27~54

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Summary of Contents for Hitachi airHome 300 RAR-M0A6

Page 1 SERVICE MANUAL INDOOR UNIT RAK-CJ10PCAST RAK-CH10PCASV RAK-CJ13PCAST RAK-CH13PCASV CH SERIES OUTDOOR UNIT RAK-CH10PCASV/RAC-CH10PCASV RAR-M0A6 RAK-CH13PCASV/RAC-CH13PCASV CONTENTS SPECIFICATIONS Page 9 HOW TO USE Page 11 CONSTRUCTION AND DIMENSIONAL DIAGRAM Page 32 MAIN PARTS COMPONENT Page 34 WIRING DIAGRAM Page 36 CIRCUIT DIAGRAM Page 37 RAC-CJ10PCAST PRINTED WIRING BOARD LOCATION DIAGRAM...
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.) Bare copper wire (for body earth) Working table Resistor 1 M (1/2W) Staple Earth wire Fig. 3. Grounding of the working table Soldering iron Grounding wire Screw stop at the screwed...
Page 5 CAUTION Slight ﬂ owing noise of refrigerant in the refrigerating cycle is expected to be heard occasionally in quiet or stop operation and it is normal. 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.
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Page 9 SPECIFICATIONS (WALL TYPE) TYPE INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT RAC-CH10PCASV RAK-CH13PCASV RAC-CH13PCASV RAK-CH10PCASV MODEL RAK-CJ10PCAST RAC-CJ10PCAST RAK-CJ13PCAST RAC-CJ13PCAST POWER SOURCE 1 PHASE, 50 Hz, 220 -240V 1060 (350 - 1,350) TOTAL INPUT 750 (300 - 1190) TOTAL AMPERES 3.79-3.47 5.07 - 4.65 3.5 (0.9 - 4.2)
Page 10 Direction of Piping Figure showing the Installation of Indoor and Outdoor Unit. CAUTION In case the pipe length is more than the recommended length for chargeless, add refrigerant R32 as below. Do not exceed the maximum pipe length. There are 6 directions allowed, namely, horizontally perpendicular to the unit, Factory...
Page 11 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.
Page 12 PRECAUTIONS DURING OPERATION The product shall be operated under the manufacturer speciﬁ cation and ● not for any other intended use. Do not attempt to operate the unit with wet hands, this could cause fatal ● accident. During thunder storm, disconnect and turn off the circuit breaker. ●...
Page 13 NAMES AND FUNCTIONS OF EACH PART INDOOR UNIT Pre-ﬁ lter To prevent dust from coming into the indoor unit. (Refer page 29) Front panel Indoor unit indicators Light indicator showing the operating condition. (Refer page 14) Horizontal deﬂ ector Vertical deﬂ ector ●...
Page 14 INDOOR UNIT INDICATORS OPERATION LAMP This lamp lights during operation. FROST WASH LAMP This lamp lights when the Frost Wash function is in operation. This lamp blinks to suggest operating manual FROST WASH operation after 200 hours of air conditioner cumulative usage. Please refer to remote controller manual for the details of Frost Wash operation.
Page 15 NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT REMOTE CONTROLLER This controls the operation of the indoor unit. Signal range to reach indoor unit is about 7 meters. If inverter lamp is used, the range of control may be shorter. This unit can be ﬁ xed on a wall using the ﬁ xture provided. Before ﬁ xing it, make sure the indoor unit can be controlled from the remote controller.
Page 16 COOLING OPERATION Use the device for cooling when the outdoor temperature is 21 ~ 46°C. If indoors humidity is very high (over 80%), some dew may form on the air outlet grille of the indoor unit. Press the selector button so that the display indicates (COOL).
Page 17 SILENT OPERATION During Cooling mode, press the selector button so that the display indicates (SILENT) along with the (COOL) symbol. Silent operation starts with a beep. The FAN SPEED will be automatically changed to SILENT. CANCELLATION of SILENT Operation Cancel Condition Operation mode after cancel Key press Stop operation...
Page 18 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 selector button so that the display indicates (DEHUMIDIFY). The FAN SPEED is set at SILENT or LOW automatically. The FAN SPEED button can be used to change between SILENT and LOW only.
Page 19 FAN OPERATION In Fan operation mode the device is function as an air circulator. Press the selector button so that the display indicates (FAN). Set the desired FAN SPEED with the button. (the display indicates the selectable setting). (HI) : High fan speed. (MED) : Medium fan speed.
Page 20 ONE-TOUCH POWERFUL MODE Press the button. Operation start with a signal received sound “beep”. ● Unit will be forced operate in (COOL) with SUPER ● COOL fan speed for 60 minutes. Indicator appear during this period. (Operation lamp at indoor unit is blinking). After 60 minutes, operation lamp stop blinking and ●...
Page 21 HOW TO SET THE AIR SLEEP TIMER Press the button, and the display changes as shown below. Mode Indication Air Sleep Timer Air Sleep Timer Air Sleep Timer: The device will continue working for the designated number of hours and then turn off. Point the signal window of the remote controller toward the indoor unit, and press the AIR SLEEP TIMER button.
Page 22 REFRESH MODE OPERATION To slightly reduce air blow temperature of air conditioner and room humidity if unit has been operating for a long period of time for the day. (a) During COOLING or SILENT operation, press the to allow unit to start REFRESH operation.
Page 23 HOW TO SET THE TIMER ■ ON Timer and OFF Timer are available. OFF Timer Reservation ■ Operation stop at setting time OFF TIMER setting Select the OFF TIMER by pressing the (OFF ● TIMER) Button. Setting time will change according to the below sequence ●...
Page 24 AIR FLOW LOUVERS ADJUSTMENTS Adjustment of the conditioned air in the upward and downward directions. The horizontal air deﬂ ector is automatically set to the proper angle suitable for each operation. The deﬂ ector can be swung up and down continuously and also set to the desired angle using the “...
Page 25 FROST WASH OPERATION (GENERAL INFORMATION) Cleaning function by frosting the indoor exchanger and allowing melted water to wash away dust particles collected on surface of exchanger. This function only applicable during OFF mode. Note ● Operate FROST WASH when under the following conditions Outdoor temperature 21°C ~ 43°C Indoor temperature...
Page 26 HOW TO EXCHANGE THE BATTERIES IN THE REMOTE CONTROLLER When using the remote control, if there is no response from the air conditioner unit and or the remote control has fading and dim displays, the batteries in the remote control device need to be removed and replaced with new ones Remove the cover as shown in the ﬁ...
Page 27 THE IDEAL WAYS OF OPERATION Suitable Room Temperature Install curtain or blinds It is possible to reduce Warning heat entering the room Freezing temperature is bad for health through windows. and a waste of electric power. Ventilation Do Not Forget To Clean The Pre-Filter Dusty air ﬁ...
Page 28 ATTACHING THE AIR PURIFYING FILTERS CAUTION 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. Remove the Pre-ﬁ lter Push upward to release the claws and pull out ●...
Page 29 MAINTENANCE CAUTION Before cleaning, stop operation and switch off the power supply. PRE-FILTER Clean the Pre-ﬁ lter, as it removes dust inside the room. In case the Pre-ﬁ lter is full of dust, the air ﬂ ow will decrease and the cooling capacity will be reduced. Further, noise may occur. Be sure to clean the Pre-ﬁ...
Page 30 CLEANING OF 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 31 Notes REGULAR INSPECTION In quiet or stop operation, the ● following phenomena may PLEASE CHECK THE FOLLOWING occassionally occur, but they are POINTS BY QUALIFIED SERVICE not abnormal for the operation. PERSONNEL EITHER EVERY HALF (1) Slight flowing noise of refrigerant in the refrigerating YEARLY OR YEARLY.
Page 32 CONSTRUCTION AND DIMENSIONAL DIAGRAM FOR INDOOR INDOOR UNIT MODEL RAK-CH10PCASV, RAK-CH13PCASV Unit: mm – 32 –...
Page 33 MODEL RAC-CH10PCASV, RAC-CH13PCASV – 33 –...
Page 34 MAIN PARTS COMPONENT THERMOSTAT Thermostat Speciﬁ cations MODEL RAK-CH10PCASV, RAK-CH13PCASV THERMOSTAT MODEL OPERATION COOL 16.7 (62.1) INDICATION 16.0 (60.8) TEMPERATURE °C 24.7 (76.5) INDICATION 24.0 (75.2) 32.7 (90.9) INDICATION 32.0 (89.6) FAN MOTOR Fan Motor Speciﬁ cations RAK-CH10PCASV, RAK-CH13PCASV RAC-CH10PCASV RAC-CH13PCASV MODEL RATED VOLTAGE DC340V...
Page 35 RAC-CH10PCASV, RAC-CH13PCASV ASD088CKPA6JK6B 2M = 2.084 ± 7% – – – CAUTION When the Air Conditioner has been operated for a long time with the capillary tubes clogged or crushed or with too little refrigerant, check the color of the refrigerant oil inside the compressor. If the color has been changed conspicuously, replace the compressor.
Page 36 MODEL RAK-CH10PCASV/RAC-CH10PCASV RAK-CH13PCASV/RAC-CH13PCASV – 36 –...
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Page 38 MODEL: RAK-CH10PCASV, RAK-CH13PCASV Indoor Fan Motor MOUNTING TYPE 3. MOUNTING FACE TYPE OF CAPACITOR A- AXIAL A- COMPONENT SIDE VH-6P F- FILM CAPACITOR R- RADIAL B- SOLDER SIDE C- CERAMIC CAPACITOR P- RADIAL(7.5mm PITCH) D- ELETROLYTIC CAPACITOR MAIN P.W.B H- HAND INSERT WR006A WR006B C- SURFACE MOUNT(SMT)
Page 39 MODEL RAC-CH10PCASV – 41 –...
Page 40 PH13CNT MODEL RAC-CH13PCASV – 43 –...
Page 41 PRINTED BOARD LOCATION DIAGRAM MODEL: RAK-CH10PCASV, RAK-CH13PCASV – 45 –...
Page 42 MODEL: RAC-CH10PCASV, RAC-CH13PCASV Control P.W.B. Marking on P.W.B. (Component side) – 46 –...
Page 43 MODEL: RAC-CH10PCASV, RAC-CH13PCASV – 47 –...
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Page 46 Notes: (1) Condition for entering into Cool Dashed mode. When fan set to “Hi” or “Auto mode” and temperature difference between indoor temperature and set temperature has a corresponding compressor rpm (calculated value in Table 2) larger than CMAX. (2) Cool Dashed will release when i) a maximum 25 minutes is lapsed and ii) room temperature is lower than set temperature –3°C (thermo off) and iii) when room temperature has achieved setting temperature –1°C then maximum Cool Dashed time will be revised to 20 minutes.
Page 47 Notes: (1) If the room temperature is (cooling preset temperature) - (1.33°C) or less after 30 seconds from starting the operation, the operation is done assuming as the preset temperature = (room temperature at the time) - (2°C). (2) The indoor fan is operated in the “Lo/Silent” mode. During thermo OFF indoor fan will be OFF for 5 minutes and ON for 1 minute. Indoor fan will go to FWSS (350 rpm). (3) When the operation is started by the themostat turning ON, the start of the indoor fan is delayed 32 seconds after the start of compressor operation.
Page 48 REFRIGERATING CYCLE DIAGRAM MODEL: RAK-CH10PCASV / RAC-CH10PCASV RAK-CH13PCASV / RAC-CH13PCASV – 55 –...
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Page 50 DESCRIPTION OF MAIN CIRCUIT OPERATION – 57 –...
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Page 59 DESCRIPTION OF MAIN CIRCUIT OPERATION MODEL RAC-CH10PCASV, RAC-CH13PCASV – 66 –...
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Page 64 4．Light receiving and indication board assembly 4) Remove a screw on the front left of the electrical. 5) Lift the lower part of the electrical product and remove the hooks at the top of the cabinet. 1) Remove the fixed claws (2 places) on the light receiving / indication board and remove it, slide the LED cover to the left and release the hooks (2 places) on the back side to remove it. LED cover Fixed claw Indication board 2) Remove the LED cover mating claw, open the LED cover, and remove the board. Caution at the time of assembly. 1) Fix the electrical parts and bundle each lead wire with P lock. Hook Ａ Back side P lock Ｂ 2) Path of lead wires as shown in the table below. Mating claws * The motor for CN9 left / right air direction deflector is not compatible with this series. Lead wire through hole "A" CN ４ Room heat exchange thermistor Lead wire through hole "B" CN ２ Indoor fan motor CN ９ Motor for left and right wind direction ...
Page 65 4) Remove the fixing screw on the left side of the evaporator. 5. Fan motor and tangential fan 5) Open the fixed claw on the lower side of the evaporator slightly to 1) Loosen the fan motor fixing screw. the left, remove it from the fixed claw and shift up the evaporator. Claw 2) Press the fixing claws (2 places) on the right side of the fan 6) While shifting up the evaporator, pull out the bearing and motor holder and open it to the right to remove it. tangential fan to the left to remove. claw Cautions when assembling fan motor and tangential fan 1) For tangential fan installation, mark the top of the dew plate and tighten the screws according to the first plate of the flow fan. 3) Pull out the fan motor to the right. – 72 –...
Page 66 6. Motor for flap (up and down wind direction deflector) 1) Press the fixing claw on the upper side of the cable guide with a screwdriver then open it to the right, and push the cable guide backward to remove it. 2) Remove the motor fixing screw and remove it from the hook. – 73 –...
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Page 68 TROUBLE SHOOTING MODEL RAC-CH10PCASV, RAC-CH13PCASV – 75 –...
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Page 70 MAIN PWB SMOOTHING CAPACITOR – 77 –...
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Page 72 Refrigerant cycle defective Refrigerant cycle defective once Connection cable is reverse Fix CN2 connector Action/replacement parts,etc. FU1 (3.15A) fuse blown Replace the part which caused blowing/disconnection of FU1 fuse. Come off or disconnection of the Fix CN16 connector connector for indicating P.W.B Refer to the service guide for how to determine the failed part Failure of control P.W.B –...
Page 73 SELF-DIAGNOSIS LIGHTING MODE MODEL RAC- , RAC-CH CH10PCAST 13PCAST – 80 –...
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Page 97 PARTS LIST AND DIAGRAM INDOOR UNIT MODEL : RAK-CH10PCASV, RAK-CH13PCASV – 104 –...
Page 98 MODEL RAK-CH10PCASV PART NO. Q’TY / UNIT PARTS NAME PMRAS-EH10CKT S-COVER R PMRAS-51CHA1 THERMISTOR SUPPORT PMRAS-25YH4 P-BEARING ASSY PMK-CJ10PCAST FAN MOTOR PMRAS-PH10CMT CYCLE ASSY PMRAS-EH10CKT TANGENTIAL FAN PMRAS-EH10CKT MOUNTING PLATE PMRAS-EH10CKT CABINET PMRAS-EH10CKT H-DEFLECT PMRAS-EH10CKT FM-BASE-L PMRAS-EH10CKT FM-BASE-R PMRAS-EH10CKT PIPE SUPPORT PMRAS-EH10CKT FRONT PANEL PMRAS-EH10CKT...
Page 99 MODEL RAK-CH13PCASV PART NO. Q’TY / UNIT PARTS NAME PMRAS-EH10CKT S-COVER R PMRAS-51CHA1 THERMISTOR SUPPORT PMRAS-25YH4 P-BEARING ASSY PMK-CJ10PCAST FAN MOTOR PMRAS-PH10CMT CYCLE ASSY PMRAS-EH10CKT TANGENTIAL FAN PMRAS-EH10CKT MOUNTING PLATE PMRAS-EH10CKT CABINET PMRAS-EH10CKT H-DEFLECT PMRAS-EH10CKT FM-BASE-L PMRAS-EH10CKT FM-BASE-R PMRAS-EH10CKT PIPE SUPPORT PMRAS-EH10CKT FRONT PANEL PMRAS-EH10CKT...
Page 100 PARTS LIST AND DIAGRAM OUTDOOR UNIT MODEL : RAC-CH10PCASV, RAC-CH13PCASV – 107 –...
Page 101 MODEL RAC-CH10PCASV PART NO. Q’TY / UNIT PARTS NAME KPNT1 PUSH NUT PMRAC-PH10CMT THERMISTOR (OH) PMRAC-50YHA2 THERMISTOR (OUTSIDE TEMPERATURE) PMRAC-X13CX VALVE 2S PMRAC-EH10CKT VALVE 3S PMRAC-EH10CKT SIDE PLATE (L) PMRAC-EH10CKT SIDE PLATE (R) PMRAC-EH10CKT CABINET PMRAC-EH10CKT D-GRILL PMRAC-EH10CKT TOP COVER PMRAC-EH10CKT SV-COVER PMRAC-F10CJ...
Page 102 MODEL RAC-CH13PCASV PART NO. Q’TY / UNIT PARTS NAME KPNT1 PUSH NUT PMRAC-PH10CMT THERMISTOR (OH) PMRAC-50YHA2 THERMISTOR (OUTSIDE TEMPERATURE) PMRAC-X13CX VALVE 2S PMRAC-EH10CKT VALVE 3S PMRAC-XH10CKT SIDE PLATE (L) PMRAC-EH10CKT SIDE PLATE (R) PMRAC-EH10CKT CABINET PMRAC-EH10CKT D-GRILL PMRAC-EH10CKT TOP COVER PMRAC-EH10CKT SV-COVER PMRAC-F10CJ...
Page 103 PM NO. 0824E RAK-CH10PCASV/RAC-CH10PCASV RAK-CH13PCASV/RAC-CH13PCASV Printed in Malaysia SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT Johnson Control-Hitachi Air Conditioning Malaysia Sdn. Bhd. DECEMBER 2023...

This manual is also suitable for:

Airhome 300 rak-cj10pcasv Airhome 300 rak-cj13pcasv Airhome 300 rac-cj10pcasv Airhome 300 rac-cj13pcasv Airhome 300 ch series