Hitachi RAC-35WPC Скачать руководство пользователя страница 40 | Manualshive

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(1) Pressing the "POWERFUL" button will reduce the temperature setting by PWSFTSD.
(2) The powerful operation is for 20 minutes after setting.
(3) Operation is continued forcibly thermo-ON for 20 minutes after the powerful operation is finished.
(4) Pressing the "START/STOP" button and "POWERFUL"button during powerful operation wil cancel the powerful operation.
(5) If the sleep timer is set during powerful operation, the powerful operation will be canceled.
(6) If the differential(the room temperature - the temperature setting) is "the differential

≧

3

℃

" after powerful setting , the compressor's

maximum speed during powerful operation will be set to SDMAX. Then the differential reduce "the differential

≦

2.33

℃

" during powerful

operation,the compressor's speed will be set to SDRPM.
If the differential(the room temperature - the temperature setting) is "the differential 3

℃

" after powerful setting , the compressor's

minimum speed during powerful operation will be set to SDRPM.

(7) After the powerful operation is ended, the system automatically operates with the previous settings used before the powerful operation.

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Содержание RAC-35WPC

Страница 1: ...pliances Wuhu Co Ltd 1 PHASE 50Hz 220 230V RAK 35RPC RAK 50RPC 41 RAR 6N1 RAK 35RPC RAK 50RPC RAC 35WPC RAC 50WPC Single outdoor unit Indoor unit RAK 35RPC RAK 50RPC HHAW NO 0096E INDOOR UNIT SPECIFICATIONS 6 HOW TO USE 8 CONSTRUCTION AND DIMENSIONAL DIAGRAM 28 MAIN PARTS COMPONENT 29 WIRING DIAGRAM 30 CIRCUIT DIAGRAM 32 BLOCK DIAGRAM 33 BASIC MODE 34 REFRIGERATING CYCLE DIAGRAM 46 DESCRIPTION OF ...

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Страница 3: ... 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 pla...

Страница 4: ...rcuits 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 4 ...

Страница 5: ...d 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 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...

Страница 6: ...r MICROPROCESSOR POWER RELAY POWER SWITCH TEMPORARY SWITCH SERVICE SWITCH TRANSFORMER VARISTOR NOISE SUPPRESSOR THERMOSTAT REMOTE CONTROL SWITCH LIQUID CRYSTAL WITHOUT REFRIGERANT BECAUSE COUPLING IS FLARE TYPE PIPES REFRIGERANT CHARGING VOLUME Refrigerant 410A NO NO NO NO NO NO YES NO NO YES IC YES 30W DC325 V 3 15A NO 450NR R YES RAK 35RPC RAK 50RPC 6 ...

Страница 7: ...b a 300mm a t u bo 450mm must t o n bend The indoor piping should be insulated with the enclosed insulation pipe If the insulator is insufficient please use commercial products Be sure to completely seal any gap with putty 2300 mm or more Maximum pipe length 20m Minimum pipe length m 3 Plug RAK 50RPC 7 ...

Страница 8: ...r a long time take the batteries out The batteries will last for approximately 1 year However if the remote controller display begins to fade and degradation of reception performance occurs within a year replace both batteries with new size AAA LR03 alkaline The attached batteries are provided for the initial use of the system The usable period of the batteries may be short depending on the manufa...

Страница 9: ...may be shorter This unit can be fi xed on a wall using the fi xture provided Before fi xing it make sure the indoor unit can be controlled from the remote controller Handle the remote controller with care Dropping it or getting it wet may compromise its signal transmission capability After new batteries are inserted into the remote controller the unit will initially require approximately 10 second...

Страница 10: ...ation will change when the room temperature varies However the mode of operation will not change when indoor unit is connected to multi type outdoor unit VARIOUS FUNCTIONS Auto Restart Control If there is a power failure operation will be automatically restarted when the power is resumed with previous operation mode and airfl ow direction As the operation is not stopped by remote controller If you...

Страница 11: ...peration the operation lamp blinks in a cycle of 3 seconds on and 0 5 second off The maximum time for defrosting is 20 minutes However if the indoor unit is connected to multi type outdoor unit the maximum time for defrosting is 15 minutes If the piping length used is longer than usual frost is likely to form 1 2 3 Defrosting 8 DEHUMIDIFYING OPERATION Dehumidifying Function When the room temperatu...

Страница 12: ...does not start if the temperature setting is higher than the current room temperature even though the OPERATION lamp lights The cooling function will start as soon as user set the temperature below the current room temperature 10 FAN OPERATION AUTO SWING OPERATION User can use the device simply as an air circulator VERTICAL SWING HORIZONTAL SWING START STOP 1 2 Press the MODE selector so that the ...

Страница 13: ...just before defrost operation when the air conditioner is running in HEATING operation After auto restart POWERFUL operation is cancelled and previous operation shall start For multi model connections POWERFUL operation may not function depending on operation conditions 12 SILENT OPERATION By pressing SILENT button during AUTO HEATING DEHUMIDIFYING COOLING or FAN operation the fan speed will chang...

Страница 14: ...temperature automatically and by limiting the maximum power consumption value 14 ECO OPERATION By pressing the ECO button during AUTO HEATING DEHUMIDIFYING or COOLING operation the air conditioner performs the ECO operation 1 To start ECO operation To cancel ECO operation Press ECO button during operation is displayed on the LCD A beep sound is emitted from indoor unit and the ECO lamp on the indo...

Страница 15: ...n the unit will operate in previous mode During Leave Home operation fan speed and horizontal air defl ector position cannot be changed By pressing Leave Home button implementation of Weekly Timer or Once Timer is cancelled In case of power supply shut down after autorestart all setting for number of days operation will be reset and unit shall be in continuous operation POWERFUL SILENT and ECO ope...

Страница 16: ...ancel Reservation Point the signal window of the remote controller towards the indoor unit and press CANCEL button and ON or OFF set time goes out with a beep and the TIMER lamp on the indoor unit turns off NOTE User can set only one of the OFF timer ON timer or ON OFF timer If WEEKLY TIMER already set by setting the ONCE TIMER ONCE TIMER operation is prioritized When ONCE TIMER operation is compl...

Страница 17: ...is possible to select Mode A or Mode B For each mode up to 6 programs can be set per day In total a maximum of 42 programs can be set for a week for each mode If calendar and clock are not set the reservation setting for WEEKLY TIMER cannot be set If calendar and clock are not set correctly WEEKLY TIMER will not operate correctly Reservation for calendar and clock shall be set fi rst before operat...

Страница 18: ...e and program number 6 shall have the latest time If the setting time is the same Priority will be given to the latest reservation contents CAUTION If the remote controller is left idle and SEND button is not pressed within 3 minutes after reservations have been made all current reservations will be lost WEEKLY TIMER OPERATION 22 How to select Mode A or Mode B of WEEKLY TIMER setting 1 Press WEEKL...

Страница 19: ...lamp lights up If TIMER lamp does not light up Press SEND button again Reservation data will not change if SEND button is not pressed Step 3 Copy and cancel the reservation schedule NOTE If there is no reservation data copying data from one day to another day cannot be done 1 2 3 4 5 6 8 WEEKLY TIMER OPERATION 24 Step 3 Copy and cancel the reservation schedule How to delete WEEKLY TIMER data Delet...

Страница 20: ... retrieved from indoor unit To check monthly power consumption Press INFO button Temperature will be displayed for 10 seconds Direct the remote controller towards the receiver of indoor unit within 2 meters in front of indoor unit and press INFO button Wait for 2 seconds for signal transmission Once received the current calendar and clock check whether they are correct or not by pressing CLOCK but...

Страница 21: ...will remain This indicates that COOLING and DEHUMIDIFYING mode operation is locked When pressing MODE button or will be displayed Method to unlock COOLING and DEHUMIDIFYING modes including FAN operations Press ECO and SILENT buttons simultaneously for about 5 seconds when the remote controller is OFF All operation mode symbols will appear on the display for about 10 seconds After that operation mo...

Страница 22: ...The deflector s will start to swing up and down is displayed on the LCD Press AUTO SWING VERTICAL button again The deflector s will stop in the current position disappeared from the LCD CAUTION When operating the unit in cooling operation with the air deflector facing down and moving automatically for a long period of time water will be condensed on the air deflector and drips down occasionally Th...

Страница 23: ...23 ...

Страница 24: ...24 ...

Страница 25: ...25 ...

Страница 26: ...26 ...

Страница 27: ...27 ...

Страница 28: ...EL RAK 35RPC RAK 50RPC INDOOR UNIT More than 50mm More than 50mm More than 50mm More than 2300mm Service space 900 265 265 369 5 231 5 231 5 295 230 RAK 35RPC RAK 50RPC 12 7 550 668 42 5 193 39 37 100 100 115 180 160 19 3 60 220 4 8 3 4 55 28 ...

Страница 29: ...ON MODEL E C R U O S R E W O P T U P T U O DC 325V W 0 3 Control circuit built in M WHT RED YEL 0 6 5V 0V V 15V BLU BLK 325 L E D O M THERMOSTAT MODEL IC OPERATION MODE T A E H L O O C ON 15 3 59 54 16 7 62 06 OFF 15 0 59 00 16 7 62 06 ON 23 3 73 94 24 7 76 46 OFF 23 0 73 40 24 7 76 46 ON 31 3 88 34 32 7 90 86 OFF 31 0 87 80 32 7 90 86 TEMPERATURE C F INDICATION 16 INDICATION 24 INDICATION 32 RAK ...

Страница 30: ...WIRING DIAGRAM RAK 35RPC RAK 50RPC 30 ...

Страница 31: ...WIRING DIAGRAM OF THE PRINTED WIRING BOARD Remote controller RAR 6 N1 Reset carbon SW SWB SW10 Carbon SW RAR 6 N1 31 ...

Страница 32: ...CIRCUIT DIAGRAM MODEL WIRED REMOTE CONTROL SEND RAK 35RPC RAK 50RPC POWER FOR CLEANNESS 32 ...

Страница 33: ...or Operation Timer Indoor microcomputer Stepping motor drive circuit Wireless remote controller Wireless receive Reset circuit Control Power circuit Room temperature thermistor Heat exchanger thermistor Oscillator clock circuit Indoor Outdoor interface circuit Indoor DC fan motor send circuit MODEL RAK 35RPC RAK 50RPC Outdoor unit 1 2 3 2 33 ...

Страница 34: ...fan speed is controlled by the heat exchanger temperature the overload control is executed as in the following diagram button button button button ultra Lo Operates at Lo regardless of the room temperature Runs at ultra Lo when thermo is off Operates at Silent regardless of the room temperature Runs at ultra Lo when thermo is off Operates at Med regardless of the room temperature Runs at ultra Lo ...

Страница 35: ...n 1 3500min 1 455 SDMAX_M 3500min 1 3500min 1 456 SDRPM_M 2200min 1 2200min 1 457 WMIN_M 1000min 1 1000min 1 45F CMINHI_M 900min 1 900min 1 460 CMIN_M 900min 1 900min 1 462 DMIN_M 900min 1 900min 1 463 PKOU_M 400min 1 400min 1 465 FZZY_GN_M 1 1 467 FZZYTM_M 2min 2min 468 DWNRATEW_M 80 80 469 DWNRATEC_M 60 70 480 SHIFTW_M 0 0 481 SFTSZW_M 0 0 488 SHIFTC_M 0 0 48C SHIFTD_M 0 0 44A CLMXTP_M 33 33 4B4...

Страница 36: ...WJKMAX WBEMAX WSZMAX CMAX CMAX2 CSTD CJKMAX CBEMAX CSZMAX WIN CMPL WIN CMPH CMIN STARTMC DWNRATEW DWNRATEC SHIFTW SHIFTC CLMXTP TEION TEIOF SFTDSW DFTIM OTP0 VALUE DFTIM OTP5 DFTIM OTP10 FCAUT L FCAUT H SFTDSC OFTMPC DASUPHH DASDNHH DASUPH DASDNH DASUPL DASDNL DASUPS DASDNS NORUPH NORDNH NORUPL NORDNL NORUPS NORDNS PDCIN2 PDCOF2 DNZKON DNZKOF FNUPPW C DFMAX STD DFMAX ATF 36 ...

Страница 37: ...v change operation mode 3 During Cool Dashed operation thermo off temperature is set temperature with shift value 3 C After thermo off operation continue in Fuzzy control mode 4 Compressor minimum ON time and OFF time is 3 minutes 5 During normal cooling mode compressor maximum rpm CMAX will maintain for 60 minutes if indoor temperature is lower than CLMXTP No time constrain if indoor tem perature...

Страница 38: ...e powerful operation 5 If the sleep timer is set during powerful operation the powerful operation will be canceled 6 When the powerful operation is set the fan speed will be set to HIGH and the compressor s maximum speed will be set to CMAX2 during powerful operation The compressor s lower limit speed is CKYMIN_PW 7 The fan speed increases by FNUPPW_C 8 After the powerful operation is ended the sy...

Страница 39: ...operated in the Lo mode During thermo OFF indoor fan will be OFF for 5 minutes and ON for 1 minute 3 When the operation is started by the themostat turning ON the start of the indoor fan is delayed 32 seconds after the start of compressor operation 4 The compressor is operated forcedly for 3 minutes after operation is started 5 The minimum ON time and OFF time of the compressor are 3 minutes for R...

Страница 40: ...led 6 If the differential the room temperature the temperature setting is the differential 3 after powerful setting the compressor s maximum speed during powerful operation will be set to SDMAX Then the differential reduce the differential 2 33 during powerful operation the compressor s speed will be set to SDRPM If the differential the room temperature the temperature setting is the differential ...

Страница 41: ...120 minutes No time limit constrain if room temperature is 18 or less and outdoor temperature is 2 or less 6 During preheating or defrosting or auto fresh defrosting mode indoor unit operation lamp will blink at interval of 2 seconds ON and 1 second OFF 7 When heating mode starts it will enter into preheating mode if indoor heat exchanger temperature is less than YNEOF 0 33 8 When fan is set to Me...

Страница 42: ...nd time onwards the inhibit time is set according to the time required for defrosting Reverse cycle operation time DEFCOL DEFTIM_COL is set Reverse cycle operation time DEFCOL The time corresponding to outdoor tempera ture is set Silent button WSZMAX CSZMAX Compresson speed Indoor fan Outdoor fan 8 WUD L L 0HG RZ RZ 6LOHQW 6 8OWUD R SILENT Notes Can t set POWERFUL and SILENT at the same time 42 ...

Страница 43: ... the sleep timer is set during powerful operation the powerful operation will be canceled 7 When the powerful operation is set the fan speed will be set to HIGH and the compressor s maximum speed will be set to WMAX2 during powerful operation The compressor s lower limit 8 After the powerful operation is ended the system automatically operates with the previous settings speed is WKYMIN_PW used bef...

Страница 44: ... Cooling 0 66ć Dehumidifying 0 66ć Heating 0 66ć Set temperature Current restrict Compressor speed Notes Can t set POWERFUL and ECO at the same time During FAN operation can t set ECO FCLN_WAM_P FCLN_SDF_P CLNCMP 44 ...

Страница 45: ...eriod 3 MAX Preheating Preheating released Stop 15 or more Auto fresh defrosting Hi or Lo Reversing valve defrosting RAK 35RPC 暖房通電 Over defrosting inhibit period Start Stop button Fan speed set to Hi Defrost signal Preheating judgment Preheating released Indoor fan Hi Med Lo Ultra Lo Outdoor fan Operation lamp Reversing valve heating on mode Hi or Lo Deceleration period Reverse cycle period Rever...

Страница 46: ...COOLING CYCLE HEATING CYCLE MODEL RAK 35RPC RAK 50RPC Outdoor unit Outdoor unit OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT INDOOR UNIT １２１２ RAK 35RPC RAK 50RPC RAK 35RPC RAK 50RPC 46 ...

Страница 47: ...nd then pull the panel towards you Arm Arm Push 2 1 3 screws pull the center of the front cover forward Screw After removing the screw of fix ing the terminal cover hold the handle of terminal cover and remove it 1 RAK 35RPC RAK 50RPC Fig 2 4 Tangential air flow fan and fan motor T T Fig 4 Fig 6 Fig 5 Press to lower the hook at the center of the unit a little and pull the claw forward to remove th...

Страница 48: ...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 drive circuits of the cleaning unit driving motor and other equipment and the 8 5 V is adjusted to a stable 5 V by the 3 terminal regulator IC IC101 IC103 and supplied to the microcomputer peripheral circuit If a failure in a part or circuit has prod...

Страница 49: ...t is Lo for resetting and Hi for heating Waveform of each part when switching ON the power and when shutting down is shown in the Fig 2 2 After switching ON the power 㽲 pin of IC501 supply voltage and 㽼 pin of microcomputer becomes Hi when DC5V line rises and reaches approximately 4 4V or higher Then resetting will be cancelled and microcomputer starts operating After shutting down the power 㽲 pin...

Страница 50: ...eform Voltage at pin 5 of microcomputer between 0 V and pin 5 FG voltage of fan motor between pins 㽵 and 㽸 of CN2 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 0 9 1 Indoor fan motor 9 96 9 9 5 5 5 5 5 5 4 3 5 9 9 5 5 5 5 5 4 4 3 3 1 9 Primary 325V Primary 18 5V Power siganl of indoor fan from...

Страница 51: ... output from buzzer output pin 83 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 the buzzer oscillates to generate the buzzer s sound R640 C632 The indoor fan motor and drive circuit are connected to the primary power supply They therefore have voltage to ground Guard against electric shocks W...

Страница 52: ...8 2 Microcomputer Room Temperature Thermistor Voltage of point V 㷄 Room temperature Room temperature input Fig 8 1 Fig 8 2 䃢 A 0V 0V 5V 2 0 1 0 10 20 30 40 3 4 5 10 R402 C403 R407 91 Heat exchanger temperature is noticed inside the room 1 Preheating 2 Low temperature defrosts at cooling and dehumidification operation time 3 Not working of reversing valve or detection of opening of heat exchanger t...

Страница 53: ...10 10 10 10 R901 R904 R641 R907 R908 R694 R902 R695 R741 R740 R642 DSW1 DSW1 R903 R905 R906 9 53 ...

Страница 54: ...l demodulated at 30 kHz Typical communication waveform Signal between F cables 1 and 2 Enlarged waveform Fig 11 2 Fig 11 1 F E D G H D Signal sent by indoor microcomputer １Ｖ DIV 9 G Signal sent by outdoor microcomputer ˍ ˋ 9 9 H E Signals sent by indoor and outdoor microcomputers ˍ ˋ 9 9 F Signal between F cables and 5ms DIV 5ms DIV ˍ ˋ 9 9 The unit is receiving a signal that it sent it is not use...

Страница 55: ...excited in 1 or 2 phases at 100 PPS or 200 PPS The excitation pattern passes the microcomputer IC601 and then the driver IC and excites the coil of each stepping motor Vertical vane leftˉ Vertical vane leftˉ Vertical vane leftˉ Vertical vane leftˉ Lateral vaneˉ Lateral vaneˉ Lateral vaneˉ Lateral vaneˉ Microcomputer Fig 12 1 9 9 1 1 9 0 0 11 Stepping motor drive circuit 61 60 59 58 Horizontal swee...

Страница 56: ...t will begin with a slight fan speed operation producing a weak fan speed for 30 seconds and then switch to strong A2 A3 When heating is conducted despite the high outdoor temperature the product may stop to protect its equipment The auto fresh defrost should be working When stopped the product will check its outdoor unit for frost and if there is any frost conduct defrosting and then stop operati...

Страница 57: ...r 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 comfortable temperature A4 The difference between the thermometer temperature setting and room temperature will change the rotation speed of the compressor This is not a sign of a bre...

Страница 58: ... time The timer cannot be set unless it is set to the current time A1 When set to the current time setting the reading blinks for about 3 minutes Wireless remote control I set the sleep timer during operation But the indoor fan will not run it will not produce wind wind intensity will not change Q5 I tried to change the setting with the room temperature button of the remote control unit in vain Q6...

Страница 59: ... electrical parts 1 Remove the electrical parts cover 2 Remove the connectors from the CN4 heat exchange thermistor CN9 CN15 stepping motor and CN2 fan motor 3 Remove t lock screws Removing control P W B 1 Remove the connectors from the CN3 2 Remove the P W B from the P W B support STRUCTURE OF AN INDOOR UNIT ELECTRIC PARTS CN16 hree FIXTURE SCREW ELECTRICA L COVER RAK 35RPC RAK 50RPC C 59 ...

Страница 60: ...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...

Страница 61: ...oor 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 the indoor unit and the display of the ...

Страница 62: ...nit is blinking troubleshoot the product while referring to the table below 2 If you wish to try another operation while the lamp is blinking operate the START STOP button on the remote control unit twice The first push will reset the indoor microcomputer while the second will activate the product Self diagnosis display function indoor side display An example of 5 time blinking 2 second intermissi...

Страница 63: ...64 63 ...

Страница 64: ...only 9 times sigle only 012 00 12 times Indoor interface circuit broken communication error between indoor and outdoor units 1 Indoor interface circuit Outdoor interface circuit broken 1 Outdoor interface circuit 64 ...

Страница 65: ...pped Temporary operation SW How to stop the operation Press and hold the Temporary operation SW again Or stop the operation using the remote controller During the forced cooling operation the Timer indicator blinks twice When performing the forced cooling operation turn the power off once If you press and hold the switch for 5 sec or longer the forced cooling operation starts To stop the forced co...

Страница 66: ...35 and page 36 66 ...

Страница 67: ...Please set the DIP switch No 6 to ON accordingly Refe to page r RAR 6N1 RAR 6N2 RAR 6N3 RAR 6N4 RAR 6N5 53 67 ...

Страница 68: ...5 68 3 ...

Страница 69: ...69 ...

Страница 70: ...dicated then release START STOP button and Mon Sun button Remote controller now enters Intermittent Fan Control Change Mode Default Pattern 1 HOW TO CHANGE THE INTERMITTENT FAN CONTROL SETTING 2 Press ROOM TEMPERATURE setting UP Ｖ DOWN buttons The intermittent pattern changed with indoor unit beep sound Transmission sign lights up with beep from indoor unit simultaneously Pattern 1 Pattern 2 Patte...

Страница 71: ...p with beep from indoor unit simultaneously Beep sound pattern 1 Default setting Short beep Beep sound pattern 2 Changed setting Double beep HOW TO CHANGE THE FAN SPEED IN COOLING MODE DURING THERMO OFF Beep sound pattern 2 Changed setting Double beep NOTE 1 The selected fan speed will remain unchanged after the unit is turned off 2 If Timer reservation has been set it will be canceled 3 During ti...

Страница 72: ...e sunshine operating hours and other factors 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 Ć2 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 diagno...

Страница 73: ...Check 3 Is the compressor of the outdoor unit running Yes No If you responded No to Check 2 ǂǂǂCheck 4 Does the emergency operation switch work Yes No First check the failure phenomenon and status and then move on to elaborate diagnosis Initiating troubleshooting No Yes Turn off the power wait at least 5 seconds turn it back on and observe the way the horizontal vanes move for about 30 seconds ǂǂǂ...

Страница 74: ...le phase 3 wire power supply If the 3 15 A fuse has blown out eliminate the cause of the fuse blowout Otherwise there will occur another fuse blowout If the 3 15 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 tak...

Страница 75: ...ls Instruct 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 swi...

Страница 76: ...it output usually shows a noise waveform as shown in ǂthe right hand figure In the case of slight jamming this kind of waveform ǂwill not cause practical problems However intense degrees of jamming ǂwill disable the reception of remote control signals When the fluorescent lamp is old and is flickering it may cause disorders ǂin the reception of remote control signals Actions proposed 1 Make it har...

Страница 77: ...s 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 for the...

Страница 78: ...e 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 thermistor resistance Did the reading r...

Страница 79: ...timated 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 ĺ and ļ of the fan motor connector CN2 below 1 5 V Take measurements while the failure phenomenon is presen...

Страница 80: ...nt before inserting it into the terminal board securely Detach the connector CN3 from the terminal board temperature fuse and check the temperature fuse for continuity Is the resistance almost 0 No Yes Initiating troubleshooting Replace the indoor electrical parts Replace the terminal board 6 Timer lamp blinking blinking twice 7 Timer lamp blinking blinking three times Estimated failure locations ...

Страница 81: ...inks 9 times and the product will not run Estimated failure location 䊶 Loose connector wire break or short circuit in the room temperature thermistor heat exchanger thermistor Cautions 䊶 Starting the product by remote control will initiate failure detection Merely turning on the power will not activate the failure detection function Diagnosis flow Initiating troubleshooting Yes Yes No No Correct t...

Страница 82: ... 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 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 seconds after startup by remote control did a voltag...

Страница 83: ...om errors Yes Yes Yes Yes No No No No Correct the F cable connection Is the CN 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 1 and 2of the terminal board of the electrical parts of the outdoor unit subjected to 㶎Take measurements within 3 minutes after remote control operation Check the elec...

Страница 84: ...ARTS LIST AND DIAGRAM INDOOR UNIT HITACHI 6 14 22 35 46 28 21 40 43 31 36 41 34 7 5 18 29 30 27 25 24 26 19 12 13 32 16 17 15 42 39 38 1 9 37 44 3 2 11 4 8 10 45 33 23 20 47 MODEL RAK 35RPC RAK 50RPC 84 ...

Страница 85: ...T COVER AS 34 1 T COVER ASS Y 35 2 CAP 36 1 H LABEL 37 1 S COVER R 38 1 S COVER L 39 1 MOUNTING PLATE 40 2 AIR FILTER 41 1 TER COVER 42 1 RE HOLDER 43 2 F CASE 44 1 ACL FILTER 45 1 T PLATE 46 1 HBOARD AS 47 1 KIBAN SUP HWRAK 18PPB 902 HWRAK 35PPB 927 HWRAK 35PPB 928 HWRAK 35PPB 929 HWRAK 18RPB 904 HWRAK 35RPB 907 HWRAK 35PPB 921 HWRAK 35PPB 922 HWRAK 35PPB 923 HWRAK 35PPB 924 HWRAK 35PPB 925 HWRAK...

Страница 86: ...HHAW NO 0096E RAK 35RPC RAK 50RPC 86 ...

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