manualshive.com logo in svg

Hitachi RAC-07G4, Service Manual

Share
Download
Hitachi RAC-07G4 Service Manual Download Page 1

NO. 0198E

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

ROOM AIR CONDITIONER

INDOOR UNIT + OUTDOOR UNIT

DECEMBER 2003

Refrigeration & Air-Conditioning Division

SERVICE MANUAL

PM

REFER TO THE FOUNDATION MANUAL

TECHNICAL INFORMATION

FOR SERVICE PERSONNEL ONLY

(W)

(A)

(kW)

(B.T.U./h)

W

H

D

(kg)

TYPE

MODEL

POWER SOURCE

TOTAL INPUT

TOTAL AMPERES

CAPACITY

DIMENSIONS
(mm)

NET WEIGHT

SPECIFICATIONS

RAS-07G4
RAS-09G4
RAS-14G4

CONTENTS

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

RAS-07G4/RAC-07G4
RAS-09G4/RAC-09G4
RAS-14G4/RAC-14G4

COOLING

After installation

RAC-14G4

RAC-07G4
RAC-09G4

 (WALL TYPE)

INDOOR UNIT

RAS-07G4

780

280

210

9.0

OUTDOOR UNIT

RAC-07G4

INDOOR UNIT

RAS-09G4

OUTDOOR UNIT

RAC-09G4

INDOOR UNIT

RAS-14G4

OUTDOOR UNIT

RAC-14G4

700

570

210

32

750

570

280

38

780

280

210

9.0

700

570

210

32

780

280

210

9.0

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

590-610-630

2.80-2.80-2.80

2.10

7,160

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

890-900-950

4.20-4.10-4.10

2.90

9,900

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

1060-1090-1120

5.00-5.00-4.90

3.50

11,940

Summary of Contents for RAC-07G4

Page 1: ... 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 RAS 07G4 RAC 07G4 RAS 09G4 RAC 09G4 RAS 14G4 RAC 14G4 COOLING After installation RAC 14G4 RAC 07G4 RAC 09G4 WALL TYPE INDOOR UNIT RAS 07G4 780 280 210 9 0 OUTDOOR UNIT RAC 07G4 INDO...

Page 2: ... be accurately calibrated 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 1MΩ or m...

Page 3: ...of parts Even rejected 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 bo...

Page 4: ... the screwed part using 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 Stapl...

Page 5: ... power failure during TIMER operation the timer will be reset and the unit will begin or stop operating under a new timer setting 4 If the room air conditioner is stopped by adjusting thermostat or missoperation and re start in a 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 circui...

Page 6: ...E CAPACITY TIME DELAY FUSE THERMOSTAT REMOTE CONTROL SWITCH LIQUID CRYSTAL RAS 07G4 RAS 09G4 RAS 14G4 20 W NO NO NO NO NO 3 15A G4A YES YES YES NO 450NR YES IC YES 20 W 30 W 1 5µF 450 VAC 2 5µF 450VAC NO 20µF 450 VAC 25µF 450 VAC YES NO NO NO NO NO NO NO NO 10 A 15 A NO NO 1050g 10m UNIT MAX PIPES REFRIGERANT CHARGING VOLUME Refrigerant 410A RAC 07G4 RAC 14G4 RAC 09G4 5RS080 5PS132 650g 600g 5PS11...

Page 7: ...t The difference in height between the indoor and outdoor unit should be kept max 5m The connecting pipe no matter big or small should all be insulated with insulation pipe and then warapped with vinyl tape The insulator will deteriorate if it is not wrapped with tape MODEL RAS 07G4 RAC 07G4 and RAS 09G4 RAC 09G4 Figure showing the installation of Indoor anf Outdoor unit The installation height of...

Page 8: ...piping should be insulated with the enclosed insulation pipe If the insulator is insufficient please use commersial products inner diameter ø 16mm The connection of insulated drain hose Please use insulated drain hose for the indoor piping commercial product The difference in height between the indoor and outdoor unit should be kept max 5m The connecting pipe no matter big or small should all be i...

Page 9: ...anger of electric shock exists Do not install near location 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 ...

Page 10: ...ows opened the room 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 mo...

Page 11: ...eration signal to the indoor unit So as to operate the whole unit Refer page 12 OUTDOOR UNIT Drain pipe Condensed water drain to outside Connecting cord and insulation pipe for piping Air inlet Back Left side Air outlet Drain pipe Condensed water drain to outside Connecting cord and insulation pipe for piping Air inlet Back and Left side Air outlet WIDTH mm 780 700 750 MODEL RAS 07G4 09G4 14G4 RAC...

Page 12: ...power source is turned off and turn on again the operation is done in automatic mode OPERATION INDICATOR 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 OPERATION LAMP This lamp lights during operation TIMER LAMP This...

Page 13: ...o set the sleep timer TEMPERATURE button Use this button to raise or lower the temperature setting Keep pressed and the value will change more quickly OFF TIMER button Select the turn OFF time ON TIMER button Select the turn ON time TIME button Use this button to set and check the time and date RESET button FUNCTION selector Use this button to select the operating mode Every time you press it the ...

Page 14: ...ton Operation starts with 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 ...

Page 15: ...s the room will become cool quickly MED Quiet LOW More quiet Set the desired room temperature with the TEMPERATURE button the display indicates the setting The range of 25 28 C is 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 some how dependin...

Page 16: ...RESET 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 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 Press the START STOP button Dehumidifying operation starts wit...

Page 17: ...t the end of summer Press the FUNCTION selector so that the display indicates FAN Press the FAN SPEED button Press the START STOP button Fan operation starts with a beep Press the button again to stop operation 1 2 START STOP RESET RESET CIRCULATION OPERATION Press the FUNCTION selector so that the display indicates CIRCULATE Press the FAN SPEED button and select the desired FAN SPEED the display ...

Page 18: ...d stops at the position where the air outlet closes CAUTION In Cooling operation do not keep the horizontal air deflector swinging for a long time Some dew may form on the horizontal air deflector and dew may drop Adjustment of the conditioned air in the upward and downward directions The horizontal air deflector is automatically set to the proper angle suitable for each operation The deflector ca...

Page 19: ...e CANCEL button The 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...

Page 20: ... complete Example The 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 in...

Page 21: ...ller The TIMER lamp 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 remo...

Page 22: ...nd the FAN SPEED will be set to LOW setting 1 hour after the setting of the sleep timer Fan Operation with the sleep timer 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 timer becomes effective instead of the off on off or off on timer set You can not set other timer during sleep timer operation T...

Page 23: ...e old batteries 2 Install 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 ...

Page 24: ...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 and old f...

Page 25: ...e used for a long period of time please switch off the power from the mains If the power from mains remains ON the indoor unit still consumes 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...

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

Page 27: ... soft bristle brush Allow filters to dry in shade 3 Re insert the air cleansing and deodorizing filter to the filter frame Set the filter with FRONT mark facing 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...

Page 28: ...e 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 release it and while closing the front panel slightly put it out forward Attaching the Front Pane...

Page 29: ...r should be installed depending on the mounting site of the unit Without a circuit breaker the danger of electric shock exists IMPORTANT The wires in this mains lead are coloured in accordance with the following code Green and yellow Earth Blue Neutral Brown Live As the colours of the wires in the mains lead of this appliance may not correspond with the coloured markings identifying the terminals ...

Page 30: ...fs 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 immediately if the air conditioner still fails to operate normally after the above inspections Inform your agent of the model of your unit production number date of installation Please also inform him regarding the fault Power supply shall be connect...

Page 31: ... the indoor unit and the outdoor unit should be within 5m 5 Power supply cord length is about 2m 6 Connecting cable 2 5mm2 dia x 3 is used for the connection Power cord Connecting cord Drain hose Approx 370 Approx 70 Narrow pipe 06 35 Wide pipe 09 52 Mounting plate 210 780 280 50 Discharge grill Top air suction grill 50 47 205 Top air suction grill Front panel Approx 108 Drain pan Drain cap connec...

Page 32: ...C 14G4 Air outlet Handle Air inlet 18 490 Handle Viewed from P 157 245 225 8 10 500 35 12 16 55 570 428 700 243 53 236 210 10 482 517 135 75 77 P 500 12 37 124 57 165 56 28 750 852 76 570 95 166 559 26 16 280 195 280 15 10 340 340 10 320 ...

Page 33: ...F COOL 16 6 61 9 16 0 60 8 24 6 76 3 24 0 75 2 32 6 90 7 32 0 89 6 CONNECTION MODEL RAS 07G4 09G4 14G4 RAC 07G4 09G4 14G4 PHASE RATED VOLTAGE SINGLE RATED FREQUENCY DC35V 220 240V OUTPUT POLE NUMBER 6 20 W 20W 30W 30W 50 Hz 35V 5V RED YELLOW BLUE M BLACK CAPACITOR RA RED INTERNAL THERMAL FUSE GRAY RM RESISTANCE VALUE 20 C 75 C RM 355 1 RA 252 6 RM 250 3 RA 171 1 RM 253 0 RA 173 4 RM 431 9 RA 307 1...

Page 34: ...G4 14G4 COMPRESSOR MODEL 5RS080 5PS112 5PS132 PHASE SINGLE RATED VOLTAGE 220 240 V RATED FREQUENCY 50 Hz LOCKED ROTOR CURRENT 45 A POLE NUMBER 2 COMPRESSOR MOTOR Compressor Motor Specifications CONNECTION 20 C 68 F 75 C 167 F RESISTANCE VALUE RM 5 233 RA 5 621 EXTERNAL OVERLOAD RELAY INTERNAL PROTECTOR YES NO ORANGE RM WHITE RA RED CAPACITOR S RED C WHITE M OR R ORANGE RAC 07G4 RAC 09G4 RAC 14G4 R...

Page 35: ... 34 WIRING DIAGRAM MODEL RAS 07G4 09G4 14G4 RAC 07G4 09G4 14G4 TERMINAL BOARD ...

Page 36: ...SEG1 SEG0 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 510FP 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 2SC2...

Page 37: ... 37 PRINTED WIRING BOARD LOCATION DIAGRAM MODEL RAS 07G4 09G4 14G4 ...

Page 38: ...EMOTE CONTROLLER ROOM TEMPERATURE THERMISTOR HEAT EXCHANGER THERMISTOR WIRELESS RECEIV ING CIRCUIT INDOOR FAN MOTOR OUTDOOR UNIT COMPRESSOR RELAY POWER RELAY BUZZER CIRCUIT OPERATION TIMER FILTER INDICATION LAMP AUTO SWEEP MOTOR 1 MICROCOMPUTER CLOCK CIRCUIT INITIALIZING CIRCUIT RESET CIRCUIT MICROCOMPUTER AX 3U M FM M OUTDOOR FAN MOTOR FM ...

Page 39: ...start HI MED or LO operation is executed according to the thermostat signal Refer to Thermostat operation LO and Stop are repeated according to the thermostat signal independent of the setting Notes Forced operation by ON OFF button ON is executed even with thermostat OFF The room temperature 30 sec after operation start minus 0 66 deg becomes the set temperature When the room temperature is 16 C ...

Page 40: ...er sleep shift in sensor dehumidification operation is limited by 16 C Notes 60 minutes after the sleep key is switched on sleep operation is started When the sleep key is switched on during OFF timer operation the OFF timer will be canceled The sleep operation is started when the sleep key is ON after timer reservation Set circulation velocity Set temperature ON OFF Switch Timer reservation Sleep...

Page 41: ...depending on the room temperature when operation starts 1 Calculation method of the moved up time Moved up time MT Moved up time depending on the temperature difference OT compensation time HT MT is at least 5 minute if OT is not zero Cooling MT 00 60 min OT 00 60 min HT 60 60 min Obtain OT moved up time depending on the temperature difference from the table below 6 NICE TEMPERA TURE reservation C...

Page 42: ...G COOLING CAPILLARY STRAINER CHARGING PIPE COMP CONDENSER REVERSING VALVE S TANK 3S VALVE EVAPORATOR MODEL RAS 09G4 RAC 09G4 COMP CONDENSER REVERSING VALVE HEATING CAPILLARY STRAINER CHARGING PIPE CHECK VALVE STRAINER HEATING COOLING CAPILLARY S TANK 3S VALVE 2S VALVE EVAPORATOR ...

Page 43: ... 48 MODEL RAS 14G4 RAC 14G4 HEATING CAPILLARY STRAINER CHARGING PIPE HEATING COOLING CAPILLARY EVAPORATOR 2S VALVE 3S VALVE S TANK COMP CONDENSER REVERSING VALVE ACCUMULATOR STRAINER CHECK VALVE ...

Page 44: ...ion independently Their 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 ...

Page 45: ...is turned ON the potential of Q201 s base rises and Q201 is turned ON Since Q201 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 ZD201 is turne...

Page 46: ... 1 Buzzer Circuit Sound wave Metal diaphragm V Pizoelectric element V Fig 3 2 Buzzer Operation Micro computer AX 3U Buzzer output BZ1 12V 0 V R801 Q302 21 B Z When the buzzer sounds an approx 3 9kHz square signal is output from buzzer output pin q of the micro computer After the amplitude of this signal has been set to 12Vp p by a transistor it is applied to the buzzer The piezoelectric element in...

Page 47: ...in 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 Power relay Micro computer AX 3U FORCE COOL 33 5V 0V R614 R629 C602 R630 Cool Normal 0V 5 Receive circuit Infrared signals from the wireless remote controller are received by the lig...

Page 48: ...7 2 are output from pins k A of the micro computer Micro computer pins Step width Horizontal air deflectors 10ms 1 2 3 4 5 6 7 8 Horizontal air deflectors 51 50 49 48 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 a...

Page 49: ...Q301 5 4 3 2 1 0 0 10 Room temperature ßC Fig 8 2 20 30 40 Voltage at V A 5 4 3 2 1 0 0 10 10 Heat exchanger temperature ßC Fig 9 2 20 30 40 Voltage at V A 3 4 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 co...

Page 50: ...01 to drive the fan motor The output voltage is divided by R919 and R920 and is input to divided voltage output pin 8 the micro computer controls the fan PWM output so the output voltage is set to the specified value The chopper frequency of the fan PWM output is 15 7kHz In the Fan current detection circuit 35V line current is detected by R906 and input to fan current detection pin 9 Microcomputer...

Page 51: ... 56 PWM output Output voltage Voltage at I Voltage at J Fig 11 2 ...

Page 52: ...MODE ONE SWING CLOSING 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 DURI...

Page 53: ...ifying operation the 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...

Page 54: ...The room temperature cannot be controlled at an automatic operation Q8 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 A8 When changing the room temperature setting in an automatic operation the next automatic operation mode is determined by new room temperature...

Page 55: ...ng the time setting A10 In the Automatic fan speed mode the indoor fan changes to MED and LO fan speed Q11 It is not a trouble The cold wind preventive function operates A11 Set the temporary switch normal In case of ON timer the operation does not start at a preprogrammed time but a little earlier Q12 Nice temperature reservation The Nice temperature reservation functions The operation starts ear...

Page 56: ...within the range of 27 3 C when cooling A14 Wireless remote controller The room temperature sensing thermistor in the indoor unit detects the room temperature and according to the particular temperature automatically performs Cooling or Dehumidifying operation The value indicated not at an Automatic but manual operation is not the actual room temperature but the room temperature setting When the r...

Page 57: ...the time over the pre programmed time As soon as the prepro grammed time is reached the time setting disappears A18 After selecting a Dehumidifying operation mode the fan speed mode remains LO fan speed Q19 At a Dehumidifying operation the LO fan speed is forcibly selected A19 ...

Page 58: ... Power switch 102 C Continuity across If there is no continuity check the electric parts and replace if abnormal 4 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 bet...

Page 59: ...side parts When checking carry out a self diagnosis by indoor indicator lamp Replace faulty part 4 Wait for 3 minutes before forced re operation by the service switch Fan Speed RAS 07G4 RAC 07G4 3 CN6 BLUE RED V Cool 20 8 15 6 12 5 11 0 HI MED LO SLEEP MODE RAS 09G4 RAC 09G4 RAS 14G4 RAC 14G4 Cool 21 3 18 0 13 7 11 9 Cool 27 0 20 9 15 8 13 0 ...

Page 60: ...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 circuit detected 1 Thermistor 2 Indoor control circuit board 1 2 3 4 5 0 5 second on 0...

Page 61: ... 66 PARTS LIST AND DIAGRAM INDOOR UNIT MODEL RAS 07G4 RAS 09G4 RAS 14G4 1 12 16 15 22 23 25 11 10 7 20 19 24 13 17 12 18 21 6 26 8 5 4 3 9 2 14 ...

Page 62: ... 25YH4 929 1 AUTO SWEEP MOTOR 13 HWRAS 25YH4 933 1 FRONT COVER ASSY 14 HWRAS 25YH4 936 1 FRONT PANEL 15 HWRAS 25YH4 937 1 AIR FILTER R 16 HWRAS 25YH4 938 1 AIR FILTER L 17 PMRAS 51CHA1 011 1 REMOTE CONTROL ASSEMBLY 18 PMRAS 10C3M 003 1 REMOTE CONTROL SUPPORT 19 PMRAS 10C8M 003 1 THERMISTOR SUPPORT 20 PMRAS 07CH2 012 1 THERMISTOR 21 HWRAS 25YH4 920 1 POWER SWITCH 22 PMRAS 07G4 001 1 P W B MAIN 23 P...

Page 63: ...RAS 25YH4 929 1 AUTO SWEEP MOTOR 13 HWRAS 25YH4 933 1 FRONT COVER ASSY 14 HWRAS 25YH4 936 1 FRONT PANEL 15 HWRAS 25YH4 937 1 AIR FILTER R 16 HWRAS 25YH4 938 1 AIR FILTER L 17 PMRAS 51CHA1 011 1 REMOTE CONTROL ASSEMBLY 18 PMRAS 10C3M 003 1 REMOTE CONTROL SUPPORT 19 PMRAS 10C8M 003 1 THERMISTOR SUPPORT 20 PMRAS 07CH2 012 1 THERMISTOR 21 HWRAS 25YH4 920 1 POWER SWITCH 22 PMRAS 09G4 001 1 P W B MAIN 2...

Page 64: ...RAS 25YH4 929 1 AUTO SWEEP MOTOR 13 HWRAS 25YH4 933 1 FRONT COVER ASSY 14 HWRAS 25YH4 936 1 FRONT PANEL 15 HWRAS 25YH4 937 1 AIR FILTER R 16 HWRAS 25YH4 938 1 AIR FILTER L 17 PMRAS 51CHA1 011 1 REMOTE CONTROL ASSEMBLY 18 PMRAS 10C3M 003 1 REMOTE CONTROL SUPPORT 19 PMRAS 10C8M 003 1 THERMISTOR SUPPORT 20 PMRAS 07CH2 012 1 THERMISTOR 21 HWRAS 25YH4 920 1 POWER SWITCH 22 PMRAS 14G4 001 1 P W B MAIN 2...

Page 65: ... 70 7 10 9 11 5 4 15 14 17 18 12 16 6 50 30 31 51 13 3 1 2 PARTS LIST AND DIAGRAM INDOOR UNIT MODEL RAC 07G4 RAC 09G4 52 ...

Page 66: ... 11 PMRAC 05CV 908 1 HANDLE 12 PMRAC 09CHA1 903 1 D GRILL 13 PMRAC 07GH4 901 1 COMPRESSOR 14 PMRA 08GF 904 3 COMPRESSOR RUBBER 15 PMRA 08GF 905 3 COMPRESSOR NUT 16 PMRAC 07GH4 902 1 CONDENSER 17 PMRAC 07GH4 904 1 2S VALVE 18 PMRAC 07GH4 905 1 3S VALVE 30 PMRAC 10C8 905 1 FAN MOTOR CAPACITOR 31 PMRAC 18CVP2 901 1 TERMINAL BOARD 2P 50 PMRAC 07GH4 906 1 COMPRESSOR CAPACITOR 51 PMRAC 07GH4 903 1 REVER...

Page 67: ...07 1 SIDE PLATE L 11 PMRAC 05CV 908 1 HANDLE 12 PMRAC 09CHA1 903 1 D GRILL 13 PMRAC 09GH4 901 1 COMPRESSOR 14 PMRA 08GF 904 3 COMPRESSOR RUBBER 15 PMRA 08GF 905 3 COMPRESSOR NUT 16 PMRAC 09GH4 902 1 CONDENSER 17 PMRAC 07GH4 904 1 2S VALVE 18 PMRAC 07GH4 905 1 3S VALVE 30 PMRAC 10C7 904 1 FAN MOTOR CAPACITOR 31 PMRAC 18CVP2 901 1 TERMINAL BOARD 50 PMRAC 09GH4 903 1 COMPRESSOR CAPACITOR 51 PMRAC 07G...

Page 68: ... 73 5 4 8 9 15 7 6 18 17 14 16 10 11 12 22 3 1 23 24 21 2 25 PARTS LIST AND DIAGRAM OUTDOOR UNIT MODEL RAC 14G4 ...

Page 69: ...VP2 901 1 TERMINAL BOARD 11 PMRAC 09GH4 903 1 COMPRESSOR CAPACITOR 12 PMRAC 10C7 904 1 FAN MOTOR CAPACITOR 13 PMRAC 14GH4 902 1 HANDLE 14 PMRAC 51CA1 901 1 CABINET 15 PMRAC 09CHA1 903 1 D GRILL 16 PMRAC 14GH4 905 1 SIDE PLATE R 17 PMRAC 51CA1 908 1 NET 18 PMRAC 51CA1 909 1 TOP COVER 21 PMRAC 07GH4 903 1 REVERSING VALVE 22 PMRAC 14GH4 903 1 STRAINER CAPILLARY 23 PMRAC 14GH4 904 1 STRAINER CONDENSOR...

Page 70: ...PM NO 0198E Printed in Malaysia RAS 07G4 RAC 07G4 RAS 09G4 RAC 09G4 RAS 14G4 RAC 14G4 ...

Reviews:

No comments

Brands by name

Popular brands

Load more brands