Hitachi RAC-10SH3 Service Manual Download Page 87

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REFRIGERATING CYCLE DIAGRAM

MODEL RAS-18SH3 / RAC-18SH3

– 85 –

Service valve

HEATING CYCLE

OUTDOOR
HEAT
EXCHANGER

valve

OUTDOOR UNIT

Air flow

Reversing

valve

Electric expansion

(1/4")

tio

Charge

port

(1/2")

(3/8")

OUTDOOR
HEAT
EXCHANGER

COOLING CYCLE

Reversing

Air flow

valve

Electric expansion

valve

(1/4")

OUTDOOR UNIT

tio

(3/8")

(1/2")

port

Charge

INDOOR UNIT

(3/8")

union

Single-ended

union

Air flow

Single-ended

Two-way valve

INDOOR HEAT

EXCHANGER

INDOOR UNIT

union

Single-ended

Air flow

Single-ended

union(3/8")

Two-way valve

EXCHANGER

INDOOR HEAT

Summary of Contents for RAC-10SH3

Page 1: ... PRINTED WIRING BOARD BLOCK DIAGRAM BASIC MODE REFRIGERATING CYCLE DIAGRAM DISASSEMBLY ASSEMBLY PROCEDURE DESCRIPTION OF MAIN CIRCUIT OPERATION SERVICE CALL Q A TROUBLE SHOOTING PARTS LIST AND DIAGRAM CONTENTS INDOOR UNIT OUTDOOR UNIT 4 5 56 58 61 65 66 141 After installation DC INVERTER COOLING HEATING TYPE MODEL POWER SOURCE TOTAL INPUT TOTAL AMPERES CAPACITY TOTAL INPUT TOTAL AMPERES CAPACITY D...

Page 2: ...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 more as measured by a 500V DC megger 9 The initial location of installation such as window floor or the other should be che...

Page 3: ...ven rejected goods should be handled in the same way 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 taken 4 Be sure to ...

Page 4: ...circuits for maintenance inspection or some others be careful not to have the test probes of the measuring instrument short circuit a load circuit or the like Bare copper wire for body earth Metal plate of Al stainless steel etc Working table Resistor 1MΩ 1 2W Earth wire Staple Fig 3 Grounding of the working table soldering iron Grounding wire Screw stop at the screwed part using a rag plate ...

Page 5: ...casion 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 temperature is below 22 C...

Page 6: ...410A UNIT PIPES MAX 20m SPECIFICATIONS REMOTE CONTROL SWITCH LIQUID CRYSTAL FUSE CAPACITY 30W DC280V NO NO 3A G4AS YES NO 450NR NO YES IC 47W DC380V YES YES 25A 2A 3 15A NO NO YES 450NR TND05V NO NO NO WITHOUT REFRIGERANT BECAUSE COUPLING IS FLARE TYPE A INRUSH WITH STAND TYPE NO NO NO 1 150g 1 250g RAS 10SH3 RAS 14SH3 RAS 18SH3 RAC 10SH3 RAC 14SH3 ASC092CD A8JK YES YES 47W DC380V YES YES 25A 2A 3...

Page 7: ...ults A circuit breaker should be installed depending on the mounting site of the unit Without a circuit breaker the danger of electric shock exists Do not install the unit near a location where there is fl ammable gas The outdoor unit may catch fi re if fl ammable gas leaks around it Piping shall be suitable supported with a maximum spacing of 1m between the supports Please ensure smooth fl ow of ...

Page 8: ... the drain pipe causing water to drip with potential electric shock hazard Do not touch the air outlet bottom surface and aluminium fi n of the outdoor unit You may get hurt Do not touch the refrigerant pipe and connecting valve Burns may result PROHIBITION DON T WET PROHIBITION PROHIBITION PROHIBITION DON T TOUCH OFF PROHIBITION PROHIBITION PROHIBITION PROHIBITION PROHIBITION DON T TOUCH STRICTLY...

Page 9: ...smission indicator ROOM TEMPERATURE Button Press this button to set the room temperature Keep pressing and the value will change more quickly STOP Button HEAT Button Press this button to start heating operation Page 14 DEHUMIDIFY Button Press this button to start dehumidifying operation Page 14 COOL Button Press this button to start cooling operation Page 15 DRY COOL Button Press this button to st...

Page 10: ...tart dynamic air operation Page 20 7 ENGLISH 10_14SH3_OM indd 7 10_14SH3_OM indd 7 2012 2 21 14 51 36 2012 2 21 14 51 36 2 Take out the anti mold wasabi cassette from the aluminium bag Do not remove or tear the aluminium sheet on the surface nor make a hole on it Remove the dust box housing Dust Box Housing Dust Box Housing INSTALLING ANTI MOLD WASABI CASSETTE Open the front panel Do not hold the ...

Page 11: ...r conditioner with dusty power plug or improper power connection could result in electrical shock or fire CAUTION Do not operate with wet hands It may cause electric shock Compulsory Wet Hand Prohibited Performing operation check after the power is turned on Perform the filter cleaning unit operation check After the power is turned on after the power plug is inserted into the power outlet or after...

Page 12: ...SH3_OM indd 11 2012 2 21 14 51 39 2012 2 21 14 51 39 1 While SAVE is blinking point the remote controller towards the unit and press the ON OFF button A short beep sounds and SAVE indicator turns on Press the FUNCTION SELECTOR button until SAVE blinks Press the FUNCTION SELECTOR button again until SAVE blinks While SAVE is blinking point the remote controller towards the unit and press the ON OFF ...

Page 13: ...TION Heating Dehumidifying Cooling Even if dehumidifying operation is set the air conditioner may not execute dehumidifying if the room humidity is not very high This is not a malfunction DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 13 ENGLISH 10_14SH3_OM indd 13 10_14SH3_OM indd 13 2012 2 21 14 51 41 2012 2 21 14 51 41 HEATING OPERATION Press the HEAT button to start heating operati...

Page 14: ...o cooling or heating for temperature control At this time the room humidity may vary by approximately 10 Heating operation Dehumidifying operation Operation stop Cooling operation About 3 C Approx 3 C if outside temp is below approx 32 C Approx 1 C if outside temp is above approx 32 C Room temperature set Current room temperature 1ºC COOLING OPERATION Press the COOL button to start cooling operati...

Page 15: ... is set and ON TIMER preset cannot be done OFF TIMER Press the STOP button 噝 A short beep sounds and Ion mist operation stops STOP Press the ION MIST button CANCEL during operation POWERFUL OPERATION 噝噝 The airflow will be extended so that the air can reach even further during powerful operation Extended Airflow Press the POWERFUL PERATION button during operation 噝 A short beep sounds and the pre...

Page 16: ...ure 19 ENGLISH 10_14SH3_OM indd 19 10_14SH3_OM indd 19 2012 2 21 14 51 44 2012 2 21 14 51 44 DYNAMIC AIR DEFLECTION FUNCTION TRACING EVASION The infrared sensor can detect the position of people and automatically change the airflow direction Press the AUTO AIR DEFLECTION button to switch the air deflection mode ƽHow to change the detection speed of the sensor of the dynamic air deflection tracing ...

Page 17: ...the air conditioner operation is stopped in any of the following conditions below heating operation stainless plasma air purifying operation quick laundry operation and OFF TIMER stop under condensation control operation operation stopped by SLEEP button ENGLISH DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 21 ENGLISH STOP 10_14SH3_OM indd 21 10_14SH3_OM indd 21 2012 2 21 14 51 45 201...

Page 18: ...s no function to remove mold that has grown 23 ENGLISH MOLD MONITOR OPERATION 10_14SH3_OM indd 23 10_14SH3_OM indd 23 2012 2 21 14 51 46 2012 2 21 14 51 46 60 15 10 50 ADJUSTING THE VERTICAL AIRFLOW DIRECTION Please operate with the remote controller Moving by hands may cause malfunction Cooling operation Heating operation Dehumidifying Dry Cool operation About About About Set automatically Air co...

Page 19: ...temperature reaches the temperature which had been set When the humidity is reached to the humidity which has been set When the room temperature is below 1 C When the temperature is below the temperature which has been set and the operation is stop The movement scope of the left right air deflectors are set to the following 5 positions 25 ENGLISH 10_14SH3_OM indd 25 10_14SH3_OM indd 25 2012 2 21 1...

Page 20: ...ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 27 ENGLISH 10_14SH3_OM indd 27 10_14SH3_OM indd 27 2012 2 21 14 51 49 2012 2 21 14 51 49 1 2 FURTHER CONVENIENT TIMER FUNCTION Dehumidifying Condensation control operation and ON TIMER for heating operation can be set at the same time Dehumidifying Condensation control operation controls the condensation which may occur in the morning while ON TIMER for he...

Page 21: ...is reached unless the unit receives a signal from the remote controller Confirm that Sleep Timer programming is complete beep and the TIMER indicator of the indoor unit turns on DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 29 ENGLISH 10_14SH3_OM indd 29 10_14SH3_OM indd 29 2012 2 21 14 51 50 2012 2 21 14 51 50 1 FILTER CLEANING OPERATION Filter Cleaning Unit Operation Check page 10 C...

Page 22: ...ning operation that was started by pressing the MANUAL CLEAN button on the remote controller the filter cleaning operation stops if the MANUAL CLEAN button on the remote controller is pressed one more time DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 31 ENGLISH 10_14SH3_OM indd 31 10_14SH3_OM indd 31 2012 2 21 14 51 51 2012 2 21 14 51 51 3 2 FILTER CLEANING OPERATION continued Manual...

Page 23: ...the air conditioner power is turned on automatic filter cleaning operation and manual filter cleaning operation which is performed using the remote controller A long beep sounds and CLEAN indicator blinks Lit for 1 second off for 1 second for 10 seconds The filter cleaning unit is out of order if the CLEAN indicator on the indoor unit still repeatedly on for 4 seconds off for 1 second In this case...

Page 24: ...um cleaner wash the filter with neutral detergent and rinse well with water and then dry the filter in the shade Align the filter with the top face of the indoor unit and then slide and push it in The shape of the left and right filters is the same Tighten the left and right filter locks to the indicated direction Attach the front panel Insert the shaft of the left arm along the step on the unit i...

Page 25: ...installation of the dust catcher could result in malfunction Filter cleaning operation can not be performed properly and the CLEAN indicator blinks CAUTION DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ Turn on the power supply or turn on the circuit breaker 37 ENGLISH 10_14SH3_OM indd 37 10_14SH3_OM indd 37 2012 2 21 14 51 55 2012 2 21 14 51 55 MAINTENANCE continued Maintenance of Ion...

Page 26: ...y for example if there are many people in the room or other heating appliances are used the preset room temperature may not be reached The preset temperature may not be reached if a heat source or humidity which exceeds the air conditioner s dehumidifying ability is present in the room Piping which is too long could lower the heating cooling performance 10_14SH3_OM indd 39 10_14SH3_OM indd 39 2012...

Page 27: ...Noise occurred during filter cleaning operation Cleaning unit stops halfway Filter may not be cleaned evenly depending on the environment in which the air conditioner is used To solve this problem clean the micro mesh stainless filter Depending on dust amount the micro mesh stainless filter may not be completely cleaned by manual filter cleaning operation performed at your preferred time while fil...

Page 28: ...s Preset temperature cannot be reached DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 43 ENGLISH 10_14SH3_OM indd 43 10_14SH3_OM indd 43 2012 2 21 14 51 58 2012 2 21 14 51 58 CONTACT YOUR SALES AGENT IMMEDIATELY ON FOLLOWING CASES In the event that any trouble or phenomenon listed below still occurs even after a check has been conducted according to the troubleshooting procedures on pa...

Page 29: ...o ordinary cleaning Request your sales agent for maintenance inspection Maintenance inspection requires technical expertise Use of commercially available cleaning agent may cause crack on resin part and clogging of drainage path which could result in water dripping and electrical shock Consult your sales agent for inspection and maintenance CAUTION DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈ...

Page 30: ...AIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 47 ENGLISH 10_14SH3_OM indd 47 10_14SH3_OM indd 47 2012 2 21 14 52 00 2012 2 21 14 52 00 4647D A 10_14SH3_OM indd 48 10_14SH3_OM indd 48 2012 2 21 14 52 00 2012 2 21 14 52 00 ...

Page 31: ...eaker should be installed depending on the mounting site of the unit Without a circuit breaker the danger of electric shock exists Do not install the unit near a location where there is fl ammable gas The outdoor unit may catch fi re if fl ammable gas leaks around it Piping shall be suitable supported with a maximum spacing of 1m between the supports Please ensure smooth fl ow of water when instal...

Page 32: ...r clog the drain pipe causing water to drip with potential electric shock hazard Do not touch the air outlet bottom surface and aluminium fi n of the outdoor unit You may get hurt Do not touch the refrigerant pipe and connecting valve Burns may result PROHIBITION DON T WET PROHIBITION PROHIBITION PROHIBITION DON T TOUCH OFF PROHIBITION PROHIBITION PROHIBITION PROHIBITION PROHIBITION DON T TOUCH ST...

Page 33: ...transmission indicator ROOM TEMPERATURE Button Press this button to set the room temperature Keep pressing and the value will change more quickly STOP Button HEAT Button Press this button to start heating operation Page 14 DEHUMIDIFY Button Press this button to start dehumidifying operation Page 14 COOL Button Press this button to start cooling operation Page 15 DRY COOL Button Press this button t...

Page 34: ...ptions are available Auto H i M ed L ow and Silent 18SH3_OM indd 7 18SH3_OM indd 7 2012 2 21 14 45 22 2012 2 21 14 45 22 2 Take out the anti mold wasabi cassette from the aluminium bag Do not remove or tear the aluminium sheet on the surface nor make a hole on it Remove the dust box housing Dust Box Housing Dust Box Housing Handle INSTALLING ANTI MOLD WASABI CASSETTE Open the front panel Do not ho...

Page 35: ...r conditioner with dusty power plug or improper power connection could result in electrical shock or fire CAUTION Do not operate with wet hands It may cause electric shock Compulsory Wet Hand Prohibited Performing operation check after the power is turned on Perform the filter cleaning unit operation check After the power is turned on after the power plug is inserted into the power outlet or after...

Page 36: ...SH3_OM indd 11 2012 2 21 14 45 25 2012 2 21 14 45 25 1 While SAVE is blinking point the remote controller towards the unit and press the ON OFF button A short beep sounds and SAVE indicator turns on Press the FUNCTION SELECTOR button until SAVE blinks Press the FUNCTION SELECTOR button again until SAVE blinks While SAVE is blinking point the remote controller towards the unit and press the ON OFF ...

Page 37: ... OPERATION Heating Dehumidifying Cooling Even if dehumidifying operation is set the air conditioner may not execute dehumidifying if the room humidity is not very high This is not a malfunction DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 13 ENGLISH 18SH3_OM indd 13 18SH3_OM indd 13 2012 2 21 14 45 27 2012 2 21 14 45 27 HEATING OPERATION Press the HEAT button to start heating operati...

Page 38: ...ched to cooling or heating for temperature control At this time the room humidity may vary by approximately 10 Heating operation Dehumidifying operation Operation stop Cooling operation About 3 C Approx 3 C if outside temp is below approx 32 C Approx 1 C if outside temp is above approx 32 C Room temperature set Current room temperature 1ºC COOLING OPERATION Press the COOL button to start cooling o...

Page 39: ... is set and ON TIMER preset cannot be done OFF TIMER Press the STOP button 噝 A short beep sounds and Ion mist operation stops STOP Press the ION MIST button CANCEL during operation POWERFUL OPERATION 噝噝 The airflow will be extended so that the air can reach even further during powerful operation Extended Airflow Press the POWERFUL PERATION button during operation 噝 A short beep sounds and the pre...

Page 40: ...mperature 19 ENGLISH 18SH3_OM indd 19 18SH3_OM indd 19 2012 2 21 14 45 30 2012 2 21 14 45 30 DYNAMIC AIR DEFLECTION FUNCTION TRACING EVASION The infrared sensor can detect the position of people and automatically change the airflow direction Press the AUTO AIR DEFLECTION button to switch the air deflection mode ƽHow to change the detection speed of the sensor of the dynamic air deflection tracing ...

Page 41: ...ed if the air conditioner operation is stopped in any of the following conditions below heating operation stainless plasma air purifying operation quick laundry operation and OFF TIMER stop under condensation control operation operation stopped by SLEEP button ENGLISH DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 21 ENGLISH STOP 18SH3_OM indd 21 18SH3_OM indd 21 2012 2 21 14 45 31 201...

Page 42: ...here is no function to remove mold that has grown 23 ENGLISH MOLD MONITOR OPERATION 18SH3_OM indd 23 18SH3_OM indd 23 2012 2 21 14 45 33 2012 2 21 14 45 33 60 15 10 50 ADJUSTING THE VERTICAL AIRFLOW DIRECTION Please operate with the remote controller Moving by hands may cause malfunction Cooling operation Heating operation Dehumidifying Dry Cool operation About About About Set automatically Air co...

Page 43: ... room temperature reaches the temperature which had been set When the humidity is reached to the humidity which has been set When the room temperature is below 1 C When the temperature is below the temperature which has been set and the operation is stop The movement scope of the left right air deflectors are set to the following 5 positions 25 ENGLISH 18SH3_OM indd 25 18SH3_OM indd 25 2012 2 21 1...

Page 44: ...NÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 27 ENGLISH 18SH3_OM indd 27 18SH3_OM indd 27 2012 2 21 14 45 36 2012 2 21 14 45 36 1 2 FURTHER CONVENIENT TIMER FUNCTION Dehumidifying Condensation control operation and ON TIMER for heating operation can be set at the same time Dehumidifying Condensation control operation controls the condensation which may occur in the morning while ON TIMER for he...

Page 45: ... time is reached unless the unit receives a signal from the remote controller Confirm that Sleep Timer programming is complete beep and the TIMER indicator of the indoor unit turns on DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 29 ENGLISH 18SH3_OM indd 29 18SH3_OM indd 29 2012 2 21 14 45 37 2012 2 21 14 45 37 1 FILTER CLEANING OPERATION Filter Cleaning Unit Operation Check page 10 C...

Page 46: ...r cleaning operation that was started by pressing the MANUAL CLEAN button on the remote controller the filter cleaning operation stops if the MANUAL CLEAN button on the remote controller is pressed one more time DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 31 ENGLISH 18SH3_OM indd 31 18SH3_OM indd 31 2012 2 21 14 45 38 2012 2 21 14 45 38 3 2 FILTER CLEANING OPERATION continued Manual...

Page 47: ...after the air conditioner power is turned on automatic filter cleaning operation and manual filter cleaning operation which is performed using the remote controller A long beep sounds and CLEAN indicator blinks Lit for 1 second off for 1 second for 10 seconds The filter cleaning unit is out of order if the CLEAN indicator on the indoor unit still repeatedly on for 4 seconds off for 1 second In thi...

Page 48: ...um cleaner wash the filter with neutral detergent and rinse well with water and then dry the filter in the shade Align the filter with the top face of the indoor unit and then slide and push it in The shape of the left and right filters is the same Tighten the left and right filter locks to the indicated direction Attach the front panel Insert the shaft of the left arm along the step on the unit i...

Page 49: ...roper installation of the dust catcher could result in malfunction Filter cleaning operation can not be performed properly and the CLEAN indicator blinks CAUTION DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ Turn on the power supply or turn on the circuit breaker 37 ENGLISH 18SH3_OM indd 37 18SH3_OM indd 37 2012 2 21 14 45 43 2012 2 21 14 45 43 MAINTENANCE continued Maintenance of Ion...

Page 50: ...apacity for example if there are many people in the room or other heating appliances are used the preset room temperature may not be reached The preset temperature may not be reached if a heat source or humidity which exceeds the air conditioner s dehumidifying ability is present in the room Piping which is too long could lower the heating cooling performance 18SH3_OM indd 39 18SH3_OM indd 39 2012...

Page 51: ...tedly Noise occurred during filter cleaning operation Cleaning unit stops halfway Filter may not be cleaned evenly depending on the environment in which the air conditioner is used To solve this problem clean the micro mesh stainless filter Depending on dust amount the micro mesh stainless filter may not be completely cleaned by manual filter cleaning operation performed at your preferred time whi...

Page 52: ... blinks Preset temperature cannot be reached DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 43 ENGLISH 18SH3_OM indd 43 18SH3_OM indd 43 2012 2 21 14 45 48 2012 2 21 14 45 48 CONTACT YOUR SALES AGENT IMMEDIATELY ON FOLLOWING CASES In the event that any trouble or phenomenon listed below still occurs even after a check has been conducted according to the troubleshooting procedures on pa...

Page 53: ...tion to ordinary cleaning Request your sales agent for maintenance inspection Maintenance inspection requires technical expertise Use of commercially available cleaning agent may cause crack on resin part and clogging of drainage path which could result in water dripping and electrical shock Consult your sales agent for inspection and maintenance CAUTION DEUTSCH FRANÇAIS ITALIANO SPANISH PORTUGUÊS...

Page 54: ... FRANÇAIS ITALIANO SPANISH PORTUGUÊS ÏÏËÓÈÎ РУССКИЙ 47 ENGLISH 18SH3_OM indd 47 18SH3_OM indd 47 2012 2 21 14 45 50 2012 2 21 14 45 50 4647E A 18SH3_OM indd 48 18SH3_OM indd 48 2012 2 21 14 45 51 2012 2 21 14 45 51 ...

Page 55: ...n 50 More Than 50 More Than 100 When piping is drawn from the left side exchange the drain hose and the drain cap Mounting Plate Front Panel Horizontal Air Deflector Top Air Suction Grill １６６６０２８ Central Line Large Diameter Small Diameter Drain Hose Vertical Air Deflector Mounting Plate Front Elevation Dimensions Of Indoor unit Wall HoleΦ65 42 5 More Than 50 350 600 638 80 798 450 450 175 10...

Page 56: ...t to ensure ventilation flue Unit mm Handle Air Suction grill Air outlet Handle Holes for anchor bolt 2 ø12 x 6 slots for ø8 0 bolt for 2 ø8 0 bolt Notch for anchor bolt Fixing hole Drain hole Drain hole More than 50 More than Wind Upper Side More Than 200 100 More than 200 More than 300 Rear side Service space 3 ...

Page 57: ... 55 MODEL RAC 18SH3 Unit mm 580 5 600 345 299 19 5 ...

Page 58: ... 7 4 W 0 3 T U P T U O ON 14 7 58 5 16 7 62 1 OFF 14 0 57 2 17 3 63 1 ON 22 7 72 9 24 7 76 5 OFF 22 0 71 6 25 3 77 5 ON 30 7 87 3 32 3 90 1 OFF 30 0 86 0 32 7 90 9 TEMPERATURE C F INDICATION 16 INDICATION 24 INDICATION 32 CONNECTION 20 C 68 F 75 C 167 F Control circuit built in 2M 35 2 5 2M 43 2 5 M WHT RED YEL 0 6 5V 0V 280V 15V BLU BLK BLU BLUE YEL YELLOW BRN BROWN WHT WHITE GRY GRAY ORN ORANGE ...

Page 59: ...A8JK L E D O M R O S S E R P M O C L G N I S E S A H P V 0 4 2 0 0 1 C D E G A T L O V D E T A R z H 0 6 0 5 Y C N E U Q E R F D E T A R 4 RAC 10 14SH3 R E B M U N E L O P 20 C 68 F 75 C 167 F 2M 1 34 2M 1 21 U WHITE YELLOW RED V M M M W RAC 18SH3 5RS132ZBA21 L G N I S 0 2 2 C D z H 0 5 4 U V 1 417 V W 1 392 U W 1 435 WHITE YELLOW RED RAC 18SH3 ...

Page 60: ... 8 5 WIRING DIAGRAM MODEL RAS 10SH3 3 H S 4 1 S A R 3 H S 8 1 S A R INDOOR UNIT ...

Page 61: ... 9 5 MODEL RAC 10SH3 RAC 14SH3 OUTDOOR UNIT YEL BLU BLU RED YEL WHT 2A FUSE RED RED BLU YEL INDOOR UNIT 3 15A FUSE 25A FUSE ...

Page 62: ... 0 6 MODEL RAC 18SH3 OUTDOOR UNIT WHT YEL RED INDOOR UNIT ...

Page 63: ... 13 16 18 17 15 20 19 ＩＣ１ AX 54A Ｒ１４４７ｋ Ω Model JSW1 JSW2 1 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 SEG30 SEG31 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 S...

Page 64: ... 2 6 3 H S 8 1 S A R 3 H S 4 1 S A R 3 H S 0 1 S A R L E D O M ...

Page 65: ... 3 6 3 H S 4 1 C A R 3 H S 0 1 C A R L E D O M 9 10 11 12 13 14 15 16 J I H G 14 15 16 E F D C B A 0 100 J I H G 1 2 3 E F D C B A 1 2 3 6 4 5 7 8 6 4 5 7 8 9 10 11 12 13 ...

Page 66: ... 4 6 MODEL RAC 18SH3 12 13 14 15 16 J I H G F E 14 15 16 D C B A 0 100 J I H G F E 1 2 3 D C B A 1 2 3 4 5 6 7 8 4 5 6 7 8 9 10 11 12 13 9 10 11 ...

Page 67: ...ng unit driving motor Motor for vertical vane Motor for lateral vane left Motor for lateral vane right High voltage generating drive circuit High voltage generator electrode Operation Timer Monitoring Cleaning Sensor Indoor microcomputer Stepping motor drive circuit Outdoor microcomputer Wireless remote controller Wireless receive circuit Reset circuit Control Power circuit Room temperature thermi...

Page 68: ...nger temperature thereby controlling the overload as shown in the figure below Provided that in SILENT mode and when overloaded LOW is produced When overloaded LOW SILENT For details see the basic operation for heating MED LOW SILENT Other than what is specified on the left Heat exchanger temperature ３１６６３０６６ Super LOW SILENT LOW MED HI Super HI and Stop are produced depending on the room t...

Page 69: ...ol dash is terminated in the constant speed period is not executed Fuzzy control is initiated instead 3 The thermometer off temperature during cool dash is the cooling temperature setting including the cooling shift 3 After the thermometer is turned off the cool dash is terminated and fuzzy control is initiated 4 The minimum ON time of the compressor is 3 minutes while the minimum OFF time is 3 mi...

Page 70: ...ation will be reset 60 minutes later and the lower limit speed is increased for 180 minutes after being set to powerful operation or for 180 minutes after the thermometer is reset 3 The thermometer is forcibly turned on for 20 minutes after the powerful operation is reset 4 Pressing the as desired button during powerful operation will cancel the powerful operation 5 If the sleep timer is set durin...

Page 71: ... can be maintained during a normal heating operation other than hot dash is within 120 minutes at a room temperature of 18 or more There is no limit if the room temperature is 18 or less or the external temperature is 2 or less 6 During preheating during defrost including the balancing time after the end of defrost and during auto fresh defrost the operation lamp will blink with cycles of lit 2 se...

Page 72: ... speed mode will not change the indoor unit speed sleep LOW 5 Entering defrost during a sleep operation will initiate the defrost and switch back to the sleep operation at the end of the defrost 6 Stopping the product midway will retain the temperature setting which was effective at the time of stoppage and continues to count the time 7 Changing the time setting midway will clear the temperature s...

Page 73: ...y as shown in Tables 1 2 and 3 according to the room temperature and external temperature and performs control as shown in Tables 4 and 5 2 For the outdoor unit its operation pattern is controlled as shown in Table 6 according to the room temperature category and external temperature category 3 If the operation status shown in Table 5 makes a state transition depending on the changes in room tempe...

Page 74: ... canceled The thermometer is forcibly turned on Notes Dehumidifying operation sleep 1 When reserved for 30 minutes 1 hour 2 hours or 3 hours As per Table 5 Table 4 Upper limit DSZMAX 1 Setting the sleep key will set the indoor unit to sleep LOW FCSOY 2 Changing fan speed modes will not change the indoor unit speed 3 Changing operation modes during sleep operation will clear the temperature setting...

Page 75: ...m two way valve Latch type reversing valve Compressor speed High humidity High humidity Low humidity Heating dry Heating dry Heating dry Category 1 Stop Category 2 Category 4 fan speed set to AUTO Category 3 Cooling dry Weak cooling Category 2 3 minimum Notes 1 The product determines the room temperature category and external temperature category as shown in Tables 1 2 and 3 according to the room ...

Page 76: ...y making a fresh start 4 Stopping the product midway will retain the temperature setting which was effective at the time of stoppage and continues to count the time 5 Changing the time setting midway will clear the temperature setting time and all other settings and make a fresh start 6 Canceling with the cancel key and sleep key will clear everything 7 The temperature setting is not shifted with ...

Page 77: ... When the external temperature 20 1 3 Weak heating region When the external temperature 20 2 During operation 2 1 Weak heating region dehumidification region low temperature stop region When the room temperature 1 2 2 Return from the low temperature stop region When the room temperature 1 In this case region judgment is performed at the time of operation startup 2 3 Weak heating region dehumidific...

Page 78: ...the temperature and humidity 2 When the temperature 10 and the humidity 70 the product will perform dehumidification 4 hours If it deviates from the conditions it will stop for 20 minutes 3 After the product runs for 4 hours it will stop for 20 minutes 4 The indoor unit is run for 3 minutes to detect the temperature and humidity 5 In second and subsequent mold monitoring operations and if the temp...

Page 79: ...ade by remote control Operating according to the settings made by remote control 1 Pressing the air purification button on the remote control unit will activate the stainless steel plasma air purification 2 If the stainless steel plasma air purification operation is set while the product is stopped turning on the electrical dust collector will activate the product with wind feed 3 Setting the stai...

Page 80: ...rvation made by remote control 4 If an operation command is received during internal cleaning the product will cancel the internal cleaning and begin to run 5 If the external temperature is high at the start of the internal cleaning the product will perform wind feed throughout all the periods 6 The heating times CLNTIM_WAM1 and CLNTIM_WAM2 are maximum times When the heat exchanger temperature 45 ...

Page 81: ...le pressing a button on the remote control unit enables switchover between cancellation and setting Operation conditions 1 A cumulative period of 8 hours after the last filter cleaning and more than 15 minutes in the air conditioner operation time immediately beforehand and when the air conditioner is stopped the product will clean itself 2 If the product stops due to the sleep timer or OFF timer ...

Page 82: ...prom 5 minutes the product will not accept signals from the remote control unit To protect the machine avoid continuous manual cleaning Allow for an interval of more than 5 minutes between operations Indicate the above in the operation manual Operation diagram 1 for filter cleaning initialization and automatic cleaning Initialization More than 10 cumulative operating hours Automatic cleaning Power...

Page 83: ... 1 min 2 33 2 33 5 2 33 2 33 5 Operation diagram 2 for filter cleaning manual and forcible cleaning Forcible cleaning Manual cleaning possible more than 5 minutes after the last cleaning and when the product is stopped Operation diagram for filter cleaning 3 timer stopped More than 70 cumulative operating hours Automatic cleaning when the timer is stopped Power Operation stop key Sleep key Manual ...

Page 84: ...g has come to a normal end 1 If the air conditioner auto fresh holds while the product is stopped it will start to clean itself after that operation is over 2 Automatic cleaning 3 Manual cleaning 1 Pressing the manual cleaning key while the air conditioner is running will not work 2 This will not be activated while the sleep one more timer is on 3 This will not be activated during initialization o...

Page 85: ...on diagram for filter cleaning error detection 2 Arrival error lock Power Product command Initialization dust box Dust box initialization Cleaning initiated Lit 4 seconds off 1 second 1 If the limit switch is not detected 3 minutes 3 seconds 2 33 30 30 is the safety time after startup the product will be considered to have an arrival error 2 If the startup side limit switch is detected during reve...

Page 86: ...mpressor Electric expansion 1 4 Suction Tank Charge port 1 2 3 8 OUTDOOR HEAT EXCHANGER COOLING CYCLE Reversing Air flow valve Strainer Electric expansion valve 1 4 OUTDOOR UNIT Compressor Tank Suction 3 8 1 2 port Charge INDOOR UNIT 3 8 union Single ended union Air flow 1 4 Single ended Two way valve INDOOR HEAT EXCHANGER INDOOR UNIT union Single ended 1 4 Air flow Single ended union 3 8 Two way ...

Page 87: ...or Electric expansion 1 4 Suction Tank Charge port 1 2 3 8 OUTDOOR HEAT EXCHANGER COOLING CYCLE Reversing Air flow valve Strainer Electric expansion valve 1 4 OUTDOOR UNIT Compressor Tank Suction 3 8 1 2 port Charge INDOOR UNIT 3 8 union Single ended union Air flow Single ended Two way valve INDOOR HEAT EXCHANGER INDOOR UNIT union Single ended Air flow Single ended union 3 8 Two way valve EXCHANGE...

Page 88: ...curely installed 2 After fitting the left and right parts of the fancy cover into the body fit the upper lugs x 2 securely 3 Tighten the screws in the terminal board cover and the fancy cover securely 4 Install the screw covers 1 Insert the shaft of the left arm of the front panel along the step in the body until shaft enters the hole 2 Insert the shaft of the right arm of the front panel along th...

Page 89: ...m of the electrical parts towards and remove it 1 Press the STOP button by remote controller then pull out the power plug from the electrical outlet 2 Remove the front panel 3 Remove the right stainless mesh filter 6 Facing the inside of the cleaning unit remove the lugs X3 of the same side of the brush cover and the brush also will be taken down together At that time you could use a minus screwdr...

Page 90: ...ch the lug of the bottom of the bearing cover 3 Remove the screws that fix the fan motor retainer 4 Push the bottom of the evaporator upwards and remove the lugs of the fan motor retainer 5 Loosen the fan fixing screws and remove the fan 6 Remove the rubber dampers from the left and right sides of the fan motor 7 Turn the fan motor towards you thereby removing it 8 Fan Fanmotor MODEL RAC 10SH3 RAC...

Page 91: ...NNECTOR CN1 CONNECTOR CN24 OUTDOOR FAN IPM MAIN P W B SELF CHECK CONNECTOR CN30 LD301 LD302 LD303 TEST SWITCH LD301 RED LD302 RED LD303 RED TEST SWITCH 黑棕蓝 SELF CHECK CONNECTOR CN30 OUTDOOR FAN CONNECTOR CN24 DC VOLTAGE MEASURING POINT IPM N DC VOLTAGE MEASURING POINT IPM P RAC 14SH3 RAC 18SH3 RAC 10SH3 ...

Page 92: ...f to stop the power supply to the indoor unit At the same time the power supply to the indoor outdoor communication circuit will be shut down resulting in the communication function being stopped In that case the failure display will consist of the timer lamp blinking 3 times 12V A A B C B C s t r a p l a c i r t c e l e r o o d t u O s t r a p l a c i r t c e l e r o o d n I Power relay Power plu...

Page 93: ...l signal in particular the oscillation frequency is lowered to a level as low as 20 kHz or so to reduce the standby power The outputs of the output windings of the transformer is rectified and smoothed to become DC voltages at primary 18 5 V 12 V and 8 5 V respectively The primary 18 5 V is supplied to the drive circuit of the indoor fan motor the 12 V is supplied to each vane motor and to the dri...

Page 94: ...fan motor between pins and of CN2 Relationship between the VS voltage of fan motor between pins and of CN2 and its rotation speed a guide When slow 700min 1 1 7ms When fast 1200min 1 1 7ms 5V 5V When slow 700min 1 7 1ms When fast 1200min 1 15V 15V 4 2ms 1300min 1 2 1V 5 4V Fig 3 1 Fig 3 2 The indoor fan motor and drive circuit are connected to the primary power supply They therefore have voltage t...

Page 95: ...l by the remote control light receiving unit IC821 and is received by the microcomputer Data is transmitted as digital data 0 and 1 by changing the interval of the basic pulses at about 420μs Ⅰ C821 VOUT GND VDD C821 R822 C822 ZD821 R821 Q821 12V 0V R640 R823 C632 Remote control reception input Microcomputer IC601 Remote control light receiving unit Remote control reception input pin 6 of microcom...

Page 96: ...e and circuit voltage is roughly as shown in Fig 5 2 If it is easier to take actual measurements between the terminals of CN4 use the chart in Fig 5 3 Voltages between thermistor ends Thermistor characteristics voltages between thermistor ends 72 92 71 6 7 CN17 Humidity sensor input Humidity sensor R408 R409 C402 0V 0V R661 Pulse output of humidity sensor P1 Pulse output of humidity sensor P3 Fig ...

Page 97: ...veform Signal between F cables B and C Enlarged waveform Fig 7 2 Fig 7 1 c b a d e a Signal sent by indoor microcomputer ５ｍs DIV １Ｖ DIV 0V d Signal sent by outdoor microcomputer ５ｍs DIV １Ｖ DIV 0V e b Signals sent by indoor and outdoor microcomputers ５ｍs DIV １Ｖ DIV 0V c Signal between F cables B and C ５ｍs DIV １Ｖ DIV 0V The unit is receiving a signal that it sent it is not used particularly ...

Page 98: ... 200 PPS The excitation pattern passes the microcomputer IC601 and then the driver IC and excites the coil of each stepping motor Vertical vane left φ4 Vertical vane left φ3 Vertical vane left φ2 Vertical vane left φ1 Lateral vane φ1 Lateral vane φ2 Lateral vane φ3 Lateral vane φ4 8 Stepping motor drive circuit Microcomputer Vertical vane motor Lateral vane motor left Lateral vane motor right Fig ...

Page 99: ...gh voltage generator 9 High Voltage generator circuit High Voltage abnormality Lo abnormal Hi normal Microcomputer Fig 9 1 Ｃ７０１０ＶＩＣＰ１Ｒ７０６１２３４ＣＮ１４０ＶＲ７０７０ＶＲ７０ 8 Ｒ７０５Ｃ６１９０Ｖ１９１８１２ＶＶin ERR ＧＮＤ REM ＯＮＯＦＦ High voltage output High Voltage generator Electrode The High Voltage generator electric dust collector causes the electrode to discharge so that di...

Page 100: ...bove operation modes control of the microcomputer IC601 will turn on the Q902 with the 12 V component passing the driver IC IC911 and powering the cleaning unit driving motor The cleaning unit driving motor will by using the driver IC IC911 perform micro step sine wave drive excitation of W1 2 When moving from the right to the left the motor current will show a waveform as illustrated in the chart...

Page 101: ...ed position and stops at the initial position at the right end Lock judgment is performed by the strains in the motor current waveform and recognizing the changes in the microcomputer input by using the current detection circuit At that time the change ratio of the microcomputer input is recognized to have exceeded the level of about 15 and is then judged to have locked Secondly when the wiper is ...

Page 102: ...t the position of people The left hand chart is displaying the operation of the infrared sensor when detecting the person moving from the left area to the right Check When the infrared sensor is in failure the output digital signal is Hi If the sensor is in failure but the output digital signal is Lo the infrared sensor lamp will be blinking on for 4 seconds off for 1 second And necessarily it usu...

Page 103: ...uced by refrigerant flowing through the pipe It may not run when the room temperature is 10 or less It will stop when the humidity goes below the humidity setting A2 A1 Defrosting is in progress Wait 5 to 10 minutes until the dew on the outdoor unit disappears At the first of the heating the product will run for 30 seconds with a slight wind When set to strong wind the product will begin with a sl...

Page 104: ...ivate a preliminary operation for 1 minute At that time heating will cause the operation lamp to blink This is not a sign of a breakdown A5 The room structure air stream or other factor may cause a gap between the room temperature setting and actual room temperature If there is any difference between the setting and the room temperature adjust the temperature setting to match the living space to a...

Page 105: ...ill not stop even when the humidity is about 50 Setting the product to mold monitoring will cause continuous operation for 4 hours at first After that under conditions with much ingress of moisture the product may run intermittently at intervals of about 20 minutes The product may not reach its room temperature or humidity setting depending on the number of people in the room room conditions outdo...

Page 106: ...cation In that case the product will switch automatically to a timer operation Q8 Q5 I tried to change the setting with the room temperature button of the remote control unit in vain Q6 A6 You cannot make this setting when the product is in air purification mode Moreover you cannot set the product to a desired setting when quick laundry or dew control is being performed with the auto or quick dehu...

Page 107: ...hen cooing is performed before comfortable cooling or in any other case where the room temperature is too low the room temperature may be set to its setting with 24 as the lower limit If the temperature setting feels too low change it to a desired temperature by using the room temperature button The remote control unit displays nothing The product will give a display when you operate the product i...

Page 108: ...s to protect the machine even if you press the manual cleaning button on the remote control unit The clean lamp will go on for 1 second and off for 1 second for a total of 10 seconds Is the product set to disable filter cleaning Set it back to a setting to enable filter cleaning The clean lamp will go on for 1 second and off for 1 second for a total of 10 seconds Are the micro mesh stainless steel...

Page 109: ... remain depending on the amount of dust or dirt A5 The cleaning unit has stopped midway Q4 Didn t you open the front panel while cleaning the filter The clean lamp will go on for 1 second and go dimmed for 1 second After servicing the filter cleaning wiper did you move the cleaning unit to the right end by remote control Are the micro mesh stainless steel filter dust catcher and filter cleaning wi...

Page 110: ...ustrated in the figure above TROUBLE SHOOTING Warning Warning Power supply Power circuit Control circuit Control circuit Do not under any circumstances get your hand or metal part into contact with the cabinet Danger Do not install a grounding Inspection instructions 108 M 140V 140V M d c f e b c a e b d a f Two way valve coil Indoor fan motor Outdoor electrical parts Indoor electrical parts Groun...

Page 111: ...ring iron of 30 to 75 W at the positive and negative terminals of IPM and discharge the charge voltage of the smoothing capacitor Warning Cautions Do not use a soldering iron equipped with a transformer Any such practice would blow out the temperature fuse in the transformer As shown in the left hand figure apply a soldering iron to the positive and negative terminals of IPM and discharge the disc...

Page 112: ...ll destroy it Be on guard When reconnecting it insert it securely all the way home All the receptacles for connecting tab terminals are with a locking mechanism Forcibly pulling any such receptacle without unlocking it will destroy it Be on guard When reconnecting it insert it securely all the way home Pinch the locking mechanism with your fingers and pull it out unlocked Other instructions 1 Deta...

Page 113: ...h mode may be unable to be stored if indoor or outdoor communications is in a failure The product stores 5 last stored failure modes There is a function for deleting memory Once you clear the memory and run the product for several days you can read the failure modes and check them thereby detecting the less frequent failure phenomena Failure modes can be checked by both the blinking of the lamp of...

Page 114: ...ATION ERROR ABNORMAL POWER SOURCE FAN LOCK ERROR EEPROM READ ERROR HIGH VOLTAGE GENERATOR DEFECTIVE OVERLOAD LOWER LIMIT CUT FAN STOP FOR STRONG WIND OF DC FAN MOTOR 2 TIMES 3 TIMES 5 TIMES 9 TIMES 10 TIMES 12 TIMES 11 TIMES 13 TIMES FAILURE OF THE PELTIER DEVICE LIGHT DOWN MODE LIGHTING DECREASING LIGHTS OFF CONNECTING CORD DEFECTIVE OUTDOOR DEFECTIVE CLEANING UNIT DEFECTIVE 11 TIMES 19 TIMES POW...

Page 115: ...TOP button The remote control unit will send the signal 8 The product beeps to indicate that it has just received the signal and redisplays the failure mode How to clear the troubleshooting data 1 Redisplay the troubleshooting status See the above procedure 2 Turn off the power 3 With the operation selector button on the remote control unit set the operation mode to heating 4 Turn on the power 5 S...

Page 116: ...nel of the indoor unit and hold down the forcible cooling switch of the display for 5 seconds How to stop Open the front panel of the indoor unit and hold down the forcible cooling switch of the display for 5 seconds During forcible cooling the timer lamp will blink twice 114 TEMPORARY SWITCH Emergency operation forcible cooling switch For an emergency operation turn off the power and then turn it...

Page 117: ...tors of the day so that the phenomenon may not be able to be identified at the time of a repair service visit In that case too use the self diagnosis memory function 2 The outdoor self diagnosis display overload lower limit cut and OH thermistor heat up can be identified only when you are using the self diagnosis lamp of the outdoor unit and the self diagnosis memory function of the indoor unit No...

Page 118: ...p gone on Yes No If you responded Yes to Check 2 Check 3 Is the compressor of the outdoor unit running Yes No If you responded No to Check 2 Check 4 Does the emergency operation switch work Yes No First check the failure phenomenon and status and then move on to elaborate diagnosis Go on to Checking the electrical parts of the outdoor unit page 107 Initiating troubleshooting No No Yes Turn off the...

Page 119: ...he single phase 3 wire power supply If the 3 A fuse has blown out eliminate the cause of the fuse blowout Otherwise there will occur another fuse blowout If the 3 A fuse has blown out due to an abnormally high voltage to the power supply the varistor VA001 will deteriorate and become destroyed as well On a repair service visit due to the failure phenomenon of The power will not become turned on ta...

Page 120: ... your users to use new alkaline batteries Does the remote control unit have a sufficient battery capacity If the liquid crystal display becomes extremely faded when a remote control signal is sent replace the batteries No Press the reset switch of the remote control unit then conduct another operation check Has the product worked Yes Instruct your users to be sure to press the reset switch after r...

Page 121: ...ving unit output usually shows a noise waveform as shown in the right hand figure In the case of slight jamming this kind of waveform will not cause practical problems However intense degrees of jamming will disable the reception of remote control signals When the fluorescent lamp is old and is flickering it may cause disorders in the reception of remote control signals Actions proposed 1 Make it ...

Page 122: ... noises coming from other electrical products Turn on and off the electrical products turn off the power and turn on the power and check their effects on the reception of remote control signals For products whose operating states change check the effects of each state Actions proposed Change the location relationship between the air conditioner and the target products Use a different wall outlet f...

Page 123: ...orange or monitoring lamp yellow of the indoor unit blinking Yes Yes Yes No No No Check for failures according to the self diagnosis display Did the self diagnosis lamp LD301 of the outdoor unit blink once or become turned off Check for failures according to the self diagnosis display Remove the connector CN4 of the room temperature thermistor and heat exchanger thermistor and measure the thermist...

Page 124: ...ter Estimated failure locations Indoor fan motor Fan motor drive circuit Diagnosis flow Initiating troubleshooting Yes Replace the indoor fan motor No Replace the indoor electrical parts Run the product by remote control and then stop it Reproduce the failure phenomenon Is the voltage between pins and of the fan motor connector CN2 below 1 5 V Take measurements while the failure phenomenon is pres...

Page 125: ...s not operating The self diagnosis memory stores timer lamp blinked 18 times Has the cleaning unit become mechanically locked Is the connector CN8 or CN10 loose or is there any lead wire break Is the cleaning unit drive circuit normal For details see page 73 Yes No Replace the cleaning unit driving motor Is the cleaning unit driving motor shaft running Yes No Replace the cleaning unit location det...

Page 126: ... the infrared human presence sensing mode is set The infrared sensor self diagnosis usually works 1 minute at least to 1 hour at most to diagnose Please refer to page 7 5 Infrared sensing failure diagnosis service mode Estimated failure locations The sensor board break CN20 connector loose lead wire break 124 No Yes Yes No Correct the connector Replace the sensor board According to Infrared sensin...

Page 127: ... position of the indoor unit is incorrect it will mislead the detection to the room area and the airflow direction Set the detection speed of the infrared sensor There are 2 detection speeds standard by intervals of 15 3 and slow by intervals of 1 10 The remote controller is set to the standard speed by default When the detection speed of the sensor is too high set the detection speed to slow When...

Page 128: ...d is replaced to counter the meltdown of the terminal board temperature fuse ensure that the F cable to be inserted into the terminal board has the appropriate dimension for peeling the insulation sheathing and that the insertion region is unbent before inserting it into the terminal board securely Detach the connector CN3 from the terminal board temperature fuse and check the temperature fuse for...

Page 129: ...ure display is given if the power relay contact has refused to be turned off for 24 consecutive hours while the product is stopped Diagnosis flow Initiating troubleshooting Turn off the power and check for continuity between power relay contacts Is the resistance almost 0Ω Yes Replace the indoor electrical parts 9 Timer lamp blinking blinking 5 times ...

Page 130: ...on The timer lamp blinks 9 times and the product will not run Estimated failure location Loose connector wire break or short circuit in the room temperature thermistor heat exchanger thermistor or humidity sensor Cautions Starting the product by remote control will initiate failure detection Merely turning on the power will not activate the failure detection function The humidity sensor will not d...

Page 131: ...oose connector or wire break in the indoor fan motor Indoor fan motor mechanically locked Indoor fan motor Indoor fan motor drive circuit Diagnosis flow Initiating troubleshooting No No No No No No No Yes Yes Yes Yes Yes Yes Yes Remove the cause of the mechanical lock Is the indoor fan motor connector CN2 securely inserted Is it free of wire breaks Correct the connector and wiring For 2 to 3 secon...

Page 132: ...tor electrodes while the power supply is on Estimated failure locations High voltage generator or its electrode out of order High voltage generator electrode dirtied CN14 connector is loose lead wire break 13 0 No Yes Yes No Clean the electrodes Correct the connector Is the CN14 connector loose Or is there a wire break Replace the electric dust collector High voltage generator Diagonsis flow Initi...

Page 133: ... Initiating troubleshooting Is the F cable connection free from errors Yes Yes Yes Yes No No No No Correct the F cable connection Is the CN30 securely inserted into the outdoor board Correct the connector Press the START STOP button on the remote control unit and start the product Are terminals A and B of the terminal board of the electrical parts of the outdoor unit subjected to 220V AC Take meas...

Page 134: ...s Check the connection of the reactor line and for wire breaks in the reactor Correct the connection of the reactor line or replace the reactor Replace the outdoor electrical parts in the case of an abnormality in the diode stack or smoothing capacitor Is the power circuit normal For details see the page on the power circuit Is the F4 2 A fuse blown out Replace the outdoor electrical parts in the ...

Page 135: ...e indoor forcible cooling switch Replace the outdoor electrical parts in the case of an abnormality in the communication circuit Correct the abnormal location Abnormality in equipment other than the electrical parts Check the blinking frequency of the LD301 The LD301 blinks once Reset stopped If the indoor unit is either of the following states it will blink once Air purification in progress Dirt ...

Page 136: ...ircuits Replace any abnormal thermistors Replace the outdoor electrical parts in the case of an abnormality in the thermistor detection circuit Check the OH thermistor for wire breaks and short circuits Replace the OH thermistor Check if the OH thermistor is not loose or poorly inserted Connect the OH thermistor Normal Normal Normal Normal Normal Review the freezing cycle Refrigerant leakage or ot...

Page 137: ...opped its operation Possible causes include a pause due to a strong wind foreign matter in the fan abnormality in the fan motor and abnormality in the drive circuit Check if the fan is clear of foreign matter and abnormalities Remove all foreign matter If the fan is abnormal replace the fan Is the wind too strong Check if the product can restart all right It takes several minutes for it to start a...

Page 138: ...ged to start the product on the outdoor unit side for the purpose of servicing 2 If the indoor electrical parts is out of order and if you wish to run the outdoor unit Cautions 1 Applying power directly to the outdoor unit will cause a rush current to stress the outdoor unit Therefore if the indoor unit is not out of order do not use the method descried in 2 2 Before making the connections be sure...

Page 139: ...ducing union and copper pipe as shown on the right Charge refrigerant of 300g after vacuuming 1 Do not operate for 5 minutes or more Outdoor unit Large dia service valve Reducing union 2 8 and 3 8 Copper pipe 2 8 Small diameter service valve Compressor Reversing valve 1 Lighting mode of the self diagnosis lamp Mounting location of the self diagnosis lamp 2A FUSE 3 15A FUSE DC VOLTAGE MEASURING POI...

Page 140: ... 8 3 1 2 Lighting mode of the self diagnosis lamp 3 H S 4 1 0 1 C A R p m a l s i s o n g a i d f l e s e h t f o e d o m g n i t h g i L ...

Page 141: ...D LD302 RED LD303 RED TEST SWITCH 黑棕蓝 SELF CHECK CONNECTOR CN30 OUTDOOR FAN CONNECTOR CN24 1 IF AC VOLTAGE INPUT ABNORMAL FOLLOW STANDARD AC VOLTAGE INPUT OVER STANDARD VOLTAGE 10 2 IF AC VOLTAGE INPUT IS NORMAL WITHIN 10 CHANGE P W B s 1 DIAGNOSIS FOR REVERSING VALVE OPERATION ERROR CHECK REVERSING VALVE WIRE CONNECTION EITHER WIRE BROKEN OR NOT IF OK CHECK 3A FUSE IF BROKEN REPLACE FUSE OR P W...

Page 142: ...unit if it is good Ultra redray test card Sensible area Within 2 cm Check functions again If it does not work replace the remote controller Buzz Within 15 cm AM radio Check the LED D1 with a multimeter Replace the battery Install the battery in the correct polarity Yes Yes No No No Yes Does the radio buzz noisily Is battery polarity correct Is the battery check sign flashing CHECKING THE REMOTE CO...

Page 143: ...R 3 H S 4 1 S A R 3 H S 0 1 S A R L E D O M 4 1 2 8 3 7 6 16 17 9 11 10 12 13 14 5 15 18 19 20 41 30 29 31 33 34 39 38 40 32 35 36 44 43 51 42 66 21 22 23 24 26 25 27 28 54 56 57 55 60 61 58 59 52 53 53 52 63 62 64 65 50 46 48 45 47 47 49 37 49 ...

Page 144: ...S A R W H 1 2 22 HWRAS SX10HAK A22 HWRAS SX13HAK A01 HWRAS SX18HAK A06 1 P W B CONTROL 23 1 ELECTRIC PARTS PLATE 24 1 P W B CONTROL SUPPORT 25 1 ELECTRIC PARTS COVER LEFT 26 1 ELECTRIC PARTS COVER RIGHT 27 1 TERMINAL BOARD 3P 28 HWRAS SX10HAK A28 HWRAS SX13HAK A02 HWRAS SX18HAK A07 1 P W B CONTROL ELECTRIC ASSEMBLY 29 1 DRAIN CAP 30 1 HEAT INSULATOR DRAIN CAP PARTS NO HWRAS SX10HAK A01 PARTS NAME ...

Page 145: ...EW CAP 50 1 DUST BOX 51 1 REMOTE CONTROLLER 52 2 FILTER LOCKER 53 2 STAINLESS MESH FILTER 54 1 DUST CATCHER 55 1 WIPER BRUSH 56 1 WIPER COVER 57 1 WIPER ASSEMBLY 58 1 SWITCH THE RIGHT OF CLEANING UNIT 59 1 CORD 2P FOR CLEANING UNIT SWITCH 60 1 AUTO SWEEP MOTOR HWRAS SX10HAK A42 HWRAS SX10HAK A43 HWRAS SX10HAK A44 HWRAS 10SH3 A01 HWRAS SX10HAK A40 HWRAS SX10HAK A33 HWRAS SX10HAK A34 HWRAS SX10HAK A...

Page 146: ...OTOR 62 1 P W B MIST SENSOR 63 1 SB COVER FOR MIST SENSOR 64 1 CORD 4P FOR MIST SENSOR 65 1 FILTER CLEANING UNIT 6 1 HEAT INSULATING MATERIAL FOR REFRIGERATING PIPE SET WHEN INSTALLING HWRAS SX10HAK A63 HWRAS SX10HAK A64 HWRAS SX10HAK A65 HWRAS SX10HAK A66 HWRAS SX10HAK A67 HWRAS SX10HAK A68 6 ...

Page 147: ... 5 4 1 3 H S 4 1 C A R 3 H S 0 1 C A R L E D O M 3 2 20 18 15 13 17 19 6 16 7 8 1 4 28 29 27 32 21 24 25 26 22 23 12 11 10 9 14 5 35 47 41 33 34 44 45 43 42 30 31 36 37 38 39 40 46 48 ...

Page 148: ...0 1 COIL REVERSING VALVE 21 1 REACTOR 1 22 1 PARTITION ASSEMBLY 23 1 REACTOR COVER REACTOR 2 24 1 PROPELLER FAN 25 1 NUT FOR PROPELLER FAN 26 1 FAN MOTOR 27 1 FAN MOTOR SUPPORT 28 1 DRAIN BUSH BASE PARTS NAME HWRAC SX10HAK A09 NO PARTS NO Q TY UNIT HWRAC SX10HAK A05 HWRAC SX10HAK A06 HWRAC SX10HAK A07 HWRAC SX10HAK A08 HWRAC SX10HAK A01 HWRAC SX10HAK A02 HWRAC SX10HAK A03 HWRAC SX10HAK A04 HWRAC S...

Page 149: ...AC SX13HAK A01 1 P W B CONTROL 42 1 FUSE 25A 43 1 SUPPORT P W B CONTROL 44 1 ELECTRIC PARTS PLATE 45 1 HEAT SINK 46 1 TERMINAL COVER 47 1 TERMINAL PLATE 48 1 TERMINAL BOARD 3P HWRAC SX10HAK A30 HWRAC SX10HAK A31 HWRAC SX10HAK A32 HWRAC SX10HAK A33 HWRAC SX10HAK A34 HWRAC SX10HAK A35 HWRAC SX10HAK A36 HWRAC SX10HAK A37 HWRAC SX10HAK A43 HWRAC SX10HAK A44 HWRAC SX10HAK A38 HWRAC SX10HAK A39 HWRAC SX...

Page 150: ... 8 4 1 MODEL RAC 18SH3 ...

Page 151: ... M R E H T T S O R F E D 1 6 1 R O T S I M R E H T T S O R F E D T R O P P U S B L U B 1 7 1 E V L A V G N I S R E V E R L I O C 1 8 1 E V L A V N O I S N A P X E L I O C 1 9 1 Y L B M E S S A N O I T I T R A P 1 0 2 R O T C A E R 1 1 2 T R O P P U S R O T O M N A F 1 2 2 R O T O M N A F 1 3 2 N A F R E L L E P O R P 1 4 2 NO PARTS NO Q TY UNIT PARTS NAME RAC 18SH HWRAC SX18HAK A01 HWRAC SX18HAK A...

Page 152: ...3 4 L O R T N O C B W P 1 4 4 Y L B M E S S A C I R T C E L E L O R T N O C B W P 1 5 4 E S A B H S U B N I A R D 2 6 4 E P I P N I A R D 1 7 4 Y L B M E S S A H S U B 1 8 4 HWRAC SX18HAK A24 HWRAC SX10HAK A39 HWRAC SX18HAK A25 HWRAC SX18HAK A26 HWRAC SX18HAK A27 HWRAC SX18HAK A28 HWRAC SX18HAK A29 HWRAC SX10HAK A49 HWRAC SX18HAK A30 HWRAC SX18HAK A31 HWRAC SX18HAK A32 HWRAC SX18HAK A33 HWRAC SX18...

Page 153: ...HHAW NO 0060E RAS 10SH3 RAC 10SH3 RAS 14SH3 RAC 10SH3 RAS 18SH3 RAC 18SH3 ...

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Summary of Contents for RAC-10SH3

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Hitachi RAC-10SH3, Service Manual, Page: 87 / 153

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Summary of Contents for RAC-10SH3

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