Hitachi RAC-30CH6 Service Manual Download Page 6

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SPECIFICATIONS

MODEL

FAN MOTOR

FAN MOTOR CAPACITOR

FAN MOTOR PROTECTOR

COMPRESSOR

COMPRESSOR MOTOR CAPACITOR

OVERLOAD PROTECTOR

OVERHEAT PROTECTOR

FUSE (MICRO COMPUTER CIRCUIT)

POWER RELAY

POWER SWITCH

TEMPORARY SWITCH

SERVICE SWITCH

TRANSFORMER

VARISTOR

NOISE SUPPRESSOR

THERMOSTAT

REMOTE CONTROL SWITCH (LIQUID CRYSTAL)

FUSE CAPACITY

RAS-30CH6

30 W

–

3.15A

G4A

YES

450NR

YES(IC)

YES

RAC-30CH6

80 W

6.0 F,400V

YES (INTERNAL)

2JD514E

60 F, 450VAC

YES (INTERNAL)

YES(IC)

30 A TIME DELAY FUSE

----------

❈

2400g

UNIT

REFRIGERANT CHARGING
VOLUME
(Refrigerant R22)

ADDITIONAL REFRIGERANT R22
AT 40g PER EVERY METER IF
PIPE LENGTH MORE THAN 8m

PIPES (MAX. 30m)

PIPES

(MIN. 5m)

0301E (30CH6) pg 1-5

16/12/05, 2:35 PM

Summary of Contents for RAC-30CH6

Page 1: ...30CH6 CONTENTS SPECIFICATIONS 4 HOW TO USE 6 CONSTRUCTION AND DIMENSIONAL DIAGRAM 30 MAIN PARTS COMPONENT 32 WIRING DIAGRAM 34 CIRCUIT DIAGRAM 35 PRINTED WIRING BOARD LOCATION DIAGRAM 37 BLOCK DIAGRAM 39 BASIC MODE 41 REFRIGERATING CYCLE DIAGRAM 47 DESCRIPTION OF MAIN CIRCUIT OPERATION 48 AUTO SWING FUNCTION 55 SERVICE CALL Q A 56 TROUBLE SHOOTING 62 PARTS LIST AND DIAGRAM 65 RAS 30CH6 RAC 30CH6 C...

Page 2: ...ibrated in advance 7 In installing the unit having been repaired be careful to prevent the occurence of any accident such as electrical shock leak of current or bodily injury due to the drop of any part 8 To check the insulation of the unit measure the insulation resistance between the power cord plug and grounding terminal of the unit The insulation resistance should be 1M or more as measured by ...

Page 3: ...ted goods should be handled in the same way Fig 1 Conductive Container 2 When any part is handled uncovered in counting packing and the like the handling person must always use himself as a body earth Make yourself a body earth by passing one M ohm earth resistance through a ring or bracelet 3 Be careful not to touch the parts with your clothing when you hold a part even if a body earth is being t...

Page 4: ...ing a rag plate Soldering iron Grounding wire Fig 4 Grounding a soldering iron Use a high insulation mode 100V 10M or higher when ordinary iron is to be used 7 In checking circuits for maintenance inspection or some others be careful not to have the test probes of the measuring instrument shortcircuit a load circuit or the like Metal plate of aluminium stainless steel etc Staple 0301E 30CH6 pg 1 5...

Page 5: ... moment there is occasion that the cooling and heating operation does not start for 3 minutes it is not abnormal and this is the result of the operation of IC delay circuit This IC delay circuit ensures that there is no danger of blowing fuse or damaging parts even if operation is restarted accidentally 5 This room air conditioner should not be used at the cooling operation when the outside temper...

Page 6: ... THERMOSTAT REMOTE CONTROL SWITCH LIQUID CRYSTAL FUSE CAPACITY RAS 30CH6 30 W NO NO NO NO NO 3 15A G4A YES NO YES NO 450NR NO YES IC YES RAC 30CH6 80 W 6 0 F 400V YES INTERNAL 2JD514E 60 F 450VAC YES INTERNAL YES INTERNAL NO NO NO NO NO NO NO NO YES IC NO 30 A TIME DELAY FUSE 2400g UNIT REFRIGERANT CHARGING VOLUME Refrigerant R22 ADDITIONAL REFRIGERANT R22 AT 40g PER EVERY METER IF PIPE LENGTH MOR...

Page 7: ...m The connecting pipe no matter big or small should all be insulated with insulation pipe and then wrapped with vinyl tape The insulator will deteriorate if it is not wrapped with tape The connection of insulated drain hose Please use insulated drain hose for the indoor piping commercial product The indoor piping should be insulated with the enclosed insulation pipe If the insulator is insufficien...

Page 8: ...on where there is flammable gas The outdoor unit may catch fire if flammable gas leaks around it Please ensure smooth flow of water when installing the drain hose CAUTION PRECAUTIONS DURING SHIFTING OR MAINTENANCE PRECAUTIONS DURING OPERATION Avoid an extended period of direct air flow for your health W A R N I N G Should abnormal situation arises like burning smell please stop operating the unit ...

Page 9: ...m humidity is always above 80 and with the air deflector facing down or moving automatically for a long period of time water will condense on the air deflector and drips down occasionally This will wet your furniture Therefore do not operate under such condition for a long time If the amount of heat in the room is above the cooling or heating capability of the unit for example more people entering...

Page 10: ...g into the indoor unit Refer page 25 FRONT PANEL AIR INLET INDOOR UNIT INDICATORS Light indicator showing the operating condition Refer page 9 HORIZONTAL DEFLECTOR VERTICAL DEFLECTOR AIR OUTLET Refer page 20 REMOTE CONTROLLER Send out operation signal to the indoor unit So as to operate the whole unit Refer page 10 AIR INLET BACK LEFT SIDE AIR OUTLET Blow out warm air 0301E 30CH6 6 9 16 12 05 2 37...

Page 11: ...ne using the temporary switch after the power source is turned off and turn on again the operation is done in automatic mode OPERATION INDICATOR TIMER LAMP This lamp lights when the timer is working OPERATION LAMP This lamp lights during operation FILTER LAMP When the device is operated for a total of about 200 hours the FILTER lamp lights to indicate that it is time to clean the filter The lamp g...

Page 12: ...se or lower the temperature setting Keep pressed and the value will change more quickly SLEEP button Use this button to set the sleep timer TIME button Use this button to set and check the time and date RESET buttons FUNCTION selector Use this button to select the operating mode Every time you press it the mode will change from AUTO to HEAT to DEHUMIDIFY to COOL and to FAN cyclically AUTO SWING bu...

Page 13: ...ith a beep Press the button again to stop operation You can raise or lower the temperature setting as necessary by maximum of 3 C Press the temperature button and the temperature setting will change by 1 C each time The preset temperature and the actual room temperature may vary somewhat depending on conditions The display does not indicate the preset temperature in the AUTO mode If you change the...

Page 14: ...ly But you may feel a chill at the beginning MED Quiet LOW More quiet Set the desired room temperature with the TEMPERATURE buttons the display indicates the setting The range of 18 22 C is recommended as the room temperature for heating If the temperature setting is 20 C the room temperature will be controlled at around 20 C The temperature setting and the actual room temperature may vary somewha...

Page 15: ...ting The function will stop the indoor unit will stop emitting air as soon as the room temperature becomes lower than the setting temperature Set the desired room temperature with the TEMPERATURE button the display indicates the setting The range of 20 26 C is recommended as the room temperature for dehumidifying C Press the START STOP button Dehumidifying operation starts with a beep Press the bu...

Page 16: ...recommended as the room temperature for cooling If the temperature setting is 27 C the room temperature will be controlled at around 27 C The temperature setting and the actual room temperature may vary somewhat depending on conditions Press the START STOP button Cooling operation starts with a beep Press the button again to stop operation The cooling function does not start if the temperature set...

Page 17: ...operation The fan speed will automatically change according to the temperature of discharged air When the difference of room temperature and setting temperature is large fan starts to run at HI speed When the room temperature reaches setting temperature fan speed changes to LOW automatically When the difference of room temperature and setting temperature is large fan starts to run at HI speed Afte...

Page 18: ... RESERVED sign goes out with a beep and the TIMER lamp turns off on the indoor unit 1 Set the current month and day with the TIMER control button 1 Press the OFF TIMER button The OFF mark blinks on the display 1 Press the ON TIMER button the ON mark blinks on the display 2 Set the turn off time with the TIMER control button Press the RESERVE button 3 Press the ON TIMER button so that the OFF mark ...

Page 19: ...e device will turn off at 11 00p m Example The device will automatically turn on earlier so that the preset temperature can be reached at 7 00 a m The setting of the turn on time is now complete 4Set the turn on time with the TIMER control button 5 Point the signal window of the remote controller toward the indoor unit and press the RESERVE button The ON mark starts lighting instead of flashing an...

Page 20: ... lights with a beep from the indoor unit When the sleep timer has been set the display indicates the turn off time Example If you set 3 hours sleep time at 11 38 p m the turn off time is 2 38 a m 2 Press the SLEEP button and set the sleep timer The device will be turned off by the sleep timer and turned on by on timer How to Cancel Reservation Point the signal window of the remote controller towar...

Page 21: ...rolled 5 C below the temperature and the FAN SPEED will be set to LOW setting 30 minutes after the setting of the sleep timer Operation with the sleep timer Sleep timer set 30 minutes later 1 hour later 3 hours later 7 hours later 2 hours later 5 C If date or current time is not set sleep timer can not be set If you set the sleep timer after the off on off or off on timer has been set the sleep ti...

Page 22: ...be swing up and down continuously and also set to the desired angle using the AUTO SWING button If the PARALLEL SWING button is pressed once the vertical air deflectors swing left and right to parallel If the button is pressed again the deflectors stop in their current position Several second about 6 seconds may be required before the deflectors start to move If the SYMMETRY SWING button is presse...

Page 23: ...nstall the new batteries The direction of the batteries should match the marks in the case 1 Do not use new and old batteries or different kinds of batteries together 2 Take out the batteries when you do not use the remote controller for 2 or 3 months CAUTION Push and pull to the direction of arrow 0301E 30CH6 14 29 16 12 05 2 39 PM 21 ...

Page 24: ...gether with your wake up time in the morning This will enable you to enjoy a comfortable room temperature Please use the timer effectively Dusty air filter will reduce the air volume and the cooling efficiency To prevent from wasting electric energy please clean the filter every 2 weeks Please pay attention to the room temperature and air flow direction when operating the unit for baby children an...

Page 25: ...nsumes about 8W in the operation control circuit even if it is in OFF mode Warning To protect the whole unit during lightning please stop operating the unit and remove the plug from the socket OFF Interference From Electrical Products Inverter type fluorescent lamp To prevent interference place at least 1m away TV Caution To avoid noise interference please place the indoor unit and its remote cont...

Page 26: ...lified service personal Before cleaning stop operation and switch off the power supply CAUTION CAUTION Do not bend the air cleansing filter as it may cause damage to the structure NOTE In case of removing the air cleansing filters please follow the above procedures The cooling capacity is slightly weakened and the cooling speed becomes slower when the air cleansing filters are used So set the fan ...

Page 27: ...e brush Allow filters to dry in shade 3 Re insert the air cleansing filter to the filter frame Set the filter with FRONT mark fac ing front and slot them into the original state After attaching the filters push the front panel at three arrow portions as shown in figure and close it CAUTION Do not wash with hot water at more than 40 C The filter may shrink When washing it shake off moisture complet...

Page 28: ... both hands to detach and attach it CAUTION Do not splash or direct water to the body of the unit when cleaning it as this may cause short circuit Never use hot water above 40 C benzine gasoline acid thinner or a brush because they will damage the plastic surface and the coating Removing the Front Panel When the front panel is fully opened with both hands push the right arm to the inside to releas...

Page 29: ...ERSONAL EITHER EVERY HALF YEARLY OR YEARLY CONTACT YOUR SALES AGENT OR SERVICE SHOP Is the earth line disconnected or broken Is the mounting frame seriously affected by rust and is the outdoor unit tilted or unstable Is the plug of power line firmly plugged into the socket Please ensure no loose contact between them Air Blow Cleaning and maintenance must be carried out only by qualified service pe...

Page 30: ...rant in the refrigerating cycle 2 Slight rubbing noise from the fan casing which is cooled and then gradually warmed as operation stops The odor will possibly be emitted from the room air conditioner because the various odor emitted by smoke foodstuffs cosmetics and so on sticks to it So the air filter and the evaporator regularly must be cleaned to reduce the odor Please contact your sales agent ...

Page 31: ...ection point The user has to make sure that the unit will be operated only at a power supply network under this condition The power supply company will be able to inform you about the connection conditions Minimum Maximum Minimum Maximum Indoor Dry bulb C 21 32 20 27 Wet bulb C 15 23 12 19 Outdoor Dry bulb C 21 43 2 21 Wet bulb C 15 26 1 15 Note Avoid to use the room air conditioner for cooling op...

Page 32: ... 5 Power supply cord length is about 2m 6 Connecting cable 2 5mm dia x 3 AB Line 1 6mm dia x 2 CD Line is used for the connection D C B A L N D C B A Indoor Unit Outdoor Unit Connecting Cord ø1 6 or ø2 0 ø2 0 Line cord RED BRN WHT BLK When piping is drawn horizontally exchange the drain hose for the drain cap Notes 1 Service space free space needed for servicing is 200mm on the right 100mm on the ...

Page 33: ... 31 MODEL RAC 30CH6 Note 1 200mm or more servicing space is required above the outdoor unit 0301E 30CH6 pg 30 34 16 12 05 2 40 PM 31 ...

Page 34: ...OFF 17 3 63 1 19 3 66 7 ON 25 6 78 1 27 6 81 7 OFF 25 3 77 5 27 3 81 1 ON 33 6 92 5 35 6 96 1 OFF 33 3 91 9 35 3 95 5 MODEL RAS 30CH6 RAC 30CH6 PHASE RATEDVOLTAGE SINGLE RATED FREQUENCY DC100V 322V 220 240V TEMPERATURE C OUTPUT POLE NUMBER 6 30 W 80 W 50 Hz BLACK CAPACITOR RA RED INTERNAL THERMAL FUSE GRAY RM RESISTANCE VALUE 20 C 75 C RM 55 2 RA 40 1 RM 68 1 RA 49 5 M RED 100 322V 0V 15V 0 6 5V F...

Page 35: ...N When the Air Conditioner has been operated for a long time with the capillary tubes clogged or crushed or with too little coolant check the color of the refrigerant oil inside the compressor If the color has been changed conspicuously replace the compressor RM 1 022 RA 2 142 RM 1 243 RA 2 605 EXTERNAL OVERLOAD RELAY INTERNAL PROTECTOR NO YES ORANGE RM WHITE PROTECTOR RA RED CAPACITOR R ORANGE S ...

Page 36: ... 2P TERMINAL 102 C L EXTERNAL FAN RELAY T HEX THERMISTOR E 60µF CAPACITOR M STICK RELAY U INTERNAL PROTECTOR F REVERSING VALVE N NOISE FILTER V VARISTOR G AUTO SWEEP MOTOR HORIZONTAL P POWER RELAY W TERMINAL BOARD 2P BLU BLUE YEL YELLOW BRN BROWN WHT WHITE GRY GRAY ORN ORANGE GRN GREEN RED RED BLK BLACK PNK PINK VIO VIOLET IVO IVORY WIRING DIAGRAM MODEL RAS 30CH6 RAC 30CH6 RAS 63CHA1 RAC 63CHA1 03...

Page 37: ...SEG43 SEG42 SEG41 SEG40 P40 P41 P42 P43 P00 P01 P02 P03 P10 P11 P12 P13 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 BEEP P20 P30 P31 NCVL C1 VL C2 VL C3 XC IN XC OUT VDD X OUT X IN RESET CARR P23 P22 P21 VSS IC 1 M3455OM6A 530FP LCD 1 C8 50v 1u K 1 D3 RB425D 1 2 K2K3 K4 K5 P10 P11 P12 K6 K7 K8 K8 K10 K11K12 K18 K17 K15 K16 K13 K14 D0 D1 D2 D3 R1 100k SW1 R2 P 100k R3 100k R4 100k R5 Q1 2SC3443 or 2SC2982 R6 R7 ...

Page 38: ... 37 PRINTED WIRING BOARD LOCATION DIAGRAM MODEL RAS 30CH6 RAS 30CH6 STICK RELAY POWER RELAY 0301E 30CH6 pg 37 16 12 05 2 45 PM 1 ...

Page 39: ...R THERMISTOR WIRELESS RECEIV ING CIRCUIT INDOOR FAN MOTOR OUTDOOR UNIT COMPRESSOR OUTDOOR FAN MOTOR RELAY POWER RELAY STICK RELAY REVERSING VALVE RELAY EXTERNAL FAN RELAY BUZZER CIRCUIT OPERATION TIMER FILTER INDICATION LAMP AUTO SWEEP MOTOR MICROCOMPUTER CLOCK CIRCUIT INITIALIZING CIRCUIT RESET CIRCUIT MICROCOMPUTER AX 3X M FM M F M REVERSING VALVE R V 0301E 30CH6 pg 39 16 12 05 2 46 PM 39 ...

Page 40: ...de A B H L H L L L S S L Automatic L XL HI MED LO and Stop are repeated according to the thermostat signal and time HI MED LO and Stop are repeated according to the thermostat signal and time MED LO and Stop are repeated according to the thermostat signal and time LO and Stop are repeated according to the thermostat signal and time The Automatic speed mode for each operation mode is used independe...

Page 41: ...s automatic NO Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Cooling Heating Item Operation switching Temporary switch Service switch Nice temperature reservation Automatic fresh defrosting Defrosting Pd cut 1 Pd cut 2 Pd cut 3 Heating load reduction External fan relay Reversing valve relay Reversing valve lock protection Sleep circuit Heater operation at the time of sensor dehumidifi...

Page 42: ...00 60 min 00 60 min HT 60 60 min 60 60 min Obtain OT moved up time depending on the temperature difference from the table below 10 NICE TEMPERA TURE reservation Heating Cooling Setting temp Room temp Time min Setting temp Room temp Time min 00 01 00 00 00 00 02 00 00 01 25 03 00 10 02 25 05 00 15 03 25 07 00 20 05 25 08 00 30 07 25 10 00 30 08 25 11 00 45 10 25 13 00 40 11 25 60 13 25 16 00 50 16 ...

Page 43: ...Y AIR FLOW SERVICE VALVE SINGLE ENDED UNION 5 8 SINGLE ENDED UNION OUTDOOR UNIT COOLING DEHUMIDIFYING DEFROSTING 6 35 1 4 INDOOR UNIT SERVICE VALVE SUCTION TANK REVERSING VALVE CHECK VALVE SILENCER PRESSURE VALVE BY PASS CAPILLARY COOL HEAT CAPILLARY AIR FLOW SERVICE VALVE SINGLE ENDED UNION 5 8 SINGLE ENDED UNION OUTDOOR UNIT HEATING 6 35 1 4 0301E 30CH6 pg 47 68 16 12 05 2 49 PM 47 ...

Page 44: ...ir operations are shown in Fig 1 1 ON OFF button Timer reserve button Sleeping Operation lamp Timer lamp When OFF timer sleeping is set Start Stop Start OFF time When ON timer is set ON time ON OFF button Timer reserve button Operation lamp Timer lamp Stop Start Fig 1 1 Timer operation 0301E 30CH6 pg 47 68 16 12 05 2 49 PM 48 ...

Page 45: ...of Q201 s base rises and Q202 is turned ON Since Q202 s collector is set to LO at this time Q202 is turned OFF and the reset input of the micro computer is set to Lo The DC 5V line voltage has already become 5V at this time and the micro computer starts operation When the power is turned OFF the voltage of the DC 12V line decreases When it becomes about 7V ZD202 is turned OFF then Q201 is turned O...

Page 46: ...put 4kHz sound 4 Initial setting IC301 The pre heating operation start value ratings of the compressor maximum rotation speed etc are preset in the micro computer 5 Receive circuit Infrared signals from the wireless remote controller are received by the light receiving unit and output after being amplified and shaped 8 7 IC401 E 2PROM 6 5 Micro computer AX 3X 26 27 R404 R403 1 2 4 3 5V 0V 5V 4 5 2...

Page 47: ... off the disconnect switch To protect the compressor wait at least 3 minutes before turning on again The fan speed is MED Does not operate is 12V is not generated in the control circuit When the service switch is used for operation each change switch is overridden Setting the service switch to Cooling turns on the Stick relay and Power relay Micro computer AX 3X FORCE COOL 43 0V 0V R629 R630 R614 ...

Page 48: ...of the micro computer Micro computer pins Step width Horizontal air deflectors 10ms 1 2 3 4 5 6 7 8 Horizontal air deflectors 15 16 17 18 Fig 7 2 Micro computer Output Signals As the micro computer s outputs change as shown in Fig 7 2 the core of the auto sweep motor is excited to turn the rotor Table 7 1 shows the rotation angle of horizontal air deflectors Rotation angle per step 0 0879 Time per...

Page 49: ...8 R304 Q301 5 4 3 2 1 0 0 10 Fig 8 2 20 30 40 Voltage at V A 5 4 3 2 1 0 0 10 10 Fig 9 2 20 30 40 Voltage at V A 64 63 9 Heat exchanger temperature thermistor circuit The voltage at A depends on the room temperature as shown in Fig 8 2 The circuit detects the indoor heat exchanger temperature and controls the following 1 Low temperature defrosting during cooling and dehumidifying operation The vol...

Page 50: ... Instruction motor WCC return the FG sinal under frequency RPM The circuit produces fan motor drive from 340V DC supplied from the indoor unit and controls the fan motor speed CAUTION 1 Indoor fan motor circuit will be connected with primary power source line and please take care of the electrical shock I O G 0V 20V 5V 5V 15V 0V VDC FM GND VCC VS FG CN2 1 3 4 5 6 340V R501 ZD201 IC201 Q503 Q502 PC...

Page 51: ...G AIR DEFLECTOR 1 DOWNWARD 2 UPWARD INITIALIZE 1 DOWNWARD INITIALIZE 1 DOWNWARD 2 UPWARD STOP AT THE MOMENT START SWINGING 1 DOWNWARD 2 UPWARD 3 DOWNWARD STOP AT THE MOMENT START SWINGING 1 DOWNWARD 2 UPWARD 3 DOWNWARD STOP AT THE MOMENT ONE SWING CLOSING AIR DEFLECTOR 1 DOWNWARD 2 UPWARD INITIALIZE AT NEXT OPERATION INITIALIZE AT NEXT OPERATION STOP DURING ONE SWING STOP DURING SWINGING STOP DURI...

Page 52: ...actual room temperature is compared with the room tem perature setting when starting the operation and the opera tion is as follows 1 When actual room tem perature room tempera ture setting The operation is according to the room temperature setting on the remote con troller 2 When actual room tem perature room tempera ture setting Regardless of the room temperature setting the temperature is autom...

Page 53: ... fan speed for 30 seconds and then by HI fan speed A8 Q7 The operation stops during a heating operation while the room temperature is set at 30 Q9 If a heating operation is per formed when the exterior temperature is high the op eration may stop to protect the equipment A9 The outdoor fan does not move at a heating operation by the service switch It is not a trouble When heating the outdoor fan is...

Page 54: ... cannot be controlled at an automatic operation Q14 It is automatically set as follows At cooling Set at 27 C At dehumidifying Set slightly lower than room temperature The room temperature setting can be raised 3 C by or lowered 3 C by V A14 When changing the room temperature setting in an automatic operation the next automatic operation mode is determined by new room temperature setting If for ex...

Page 55: ... A16 In the Automatic fan speed mode the indoor fan changes to MED and LO fan speed Q17 It is not a trouble The cold wind preventive function operates A17 Set the temporary switch normal In case of ON timer the operation does not start at a preprogrammed time but a little earlier Q18 Nice temperature reservation The Nice temperature reservation functions The operation starts earlier so the room te...

Page 56: ...transmission either Q21 The room temperature is settable within the range of 16 32 and not beyond A21 The timer cannot be set Q22 Is the current time set The timer cannot be set unless the clock is adjusted correctly A22 V The current time disap pears soon Q23 The current time disappears soon and the timer settting indication takes a precedence A23 When setting the current time its indication blin...

Page 57: ...e programmed time As soon as the prepro grammed time is reached the time setting disappears A24 After selecting a Dehumidifying operation mode the fan speed mode remains LO fan speed Q25 At a Dehumidifying operation the LO fan speed is forcibly selected A25 0301E 30CH6 pg 47 68 16 12 05 2 49 PM 61 ...

Page 58: ...he electric parts and replace if abnormal 5 Thermal fuse for Terminal board 2 Before checking the varistor detach a terminal NO Operates by setting the service switch to forced cooling Return the service switch to Normal Set the remote controller to an operation status and press the ON OFF button Is the level LO approx 0 5V between driver IC701 pin 11 power relay and 0V NO NO Is the level LO appro...

Page 59: ... the circuit board inside parts When checking carry out a self diagnosis by indoor indicator lamp Fan Speed HI MED LO RAS 30CH6 3 Replace faulty part 4 Wait for 3 minutes before forced re operation by the service switch CN6 BLUE RED V Cooling Heating 32 6 28 0 24 0 32 6 27 6 25 0 0301E 30CH6 pg 47 68 16 12 05 2 49 PM 63 ...

Page 60: ...r forcible operation or under balancing after forcible operation Check force cooling switch at indoor electrical IC 401 Data read wrongly In case that data read from IC401 is wrong IC401 data is not in order Heat exchanger thermistor error Heat exchanger thermistor open or short circuit detected 1 Thermistor 2 Indoor control circuit board Room thermistor error Room thermistor error open or short c...

Page 61: ... 65 PARTS LIST AND DIAGRAM INDOOR UNIT MODEL RAS 30CH6 1 9 4 5 8 2 3 12 11 10 7 28 6 29 20 16 19 13 15 18 24 22 30 31 32 27 14 21 26 17 25 23 33 0301E 30CH6 pg 47 68 16 12 05 2 49 PM 65 ...

Page 62: ...RAS 72CHA3 009 1 FILTER R 17 PMRAS 72CHA3 019 1 REMOTE CONTROL ASSY 18 PMRAS 10C3M 003 1 REMOTE CONTROL SUPPORT 19 PMRAS 72CHA3 008 1 FILTER L 20 PMRAS 72CHA3 022 1 THERMISTOR 21 PMRAS 18CP2R 002 1 POWER SWITCH 22 PMRAS 30CH6 001 1 P W B MAIN 23 PMRAS 72CHA3 012 1 ION STICK 24 PMRAS 51CHA1 017 1 TERMINAL BOARD FUSE 25 PMRAS 72CHA3 023 1 UV LED 26 PMRAS 72CHA3 015 1 P W B RECEIVER 27 PMRAS 10C6M 00...

Page 63: ... 67 PARTS LIST AND DIAGRAM OUTDOOR UNIT MODEL RAC 30CH6 19 17 14 20 4 35 8 23 7 21 1 2 3 6 5 12 26 24 13 25 11 29 9 27 28 0301E 30CH6 pg 47 68 16 12 05 2 49 PM 67 ...

Page 64: ...3 910 1 STRAINER COND 1 14 PMRAS 51CHA1 903 1 TERMINAL BOARD 4P 17 PMRAC 81CHA3 901 1 COMPRESSOR CAPACITOR 60µF 450V 19 PMRA 3147CLH 905 1 FAN MOTOR CAPACITOR 6 0µF 400V 20 PMRAC 30CVP1 908 1 PLATE 21 PMRAC 81CHA3 904 1 GRILL 23 PMRAC 30CVP1 911 1 PIPE COVER BACK 24 PMRAC 30CVP1 912 1 FAN MOTOR 25 PMRAC 81CHA3 906 1 STRAINER 26 PMRAC 81CHA3 913 1 PRESSURE VALVE 27 PMRAC 51CHA1 904 1 REVERSING VALV...

Page 65: ...PM NO 0301E Printed in Malaysia RAS 30CH6 RAC 30CH6 0301E 30CH6 cover 16 12 05 2 33 PM 2 ...

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