Hitachi RAC-35NX2 Service Manual Download Page 74

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RAF-35NX2

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Summary of Contents for RAC-35NX2

Page 1: ...UIT OPERATION DESCRIPTION DES PRINCIPAUX CIRCUITS SERVICE CALL Q A MODE OPERATOIRE DE DEPANNAGE TROUBLE SHOOTING DETECTION DES PANNES PARTS LIST AND DIAGRAM LISTE DES PIÉCES DE RECHANGE CONTENTS TABLE DES MATIERES INDOOR UNIT OUTDOOR UNIT JUNE 2010 Hitachi Household Appliances Wuhu Co Ltd 32 36 38 40 129 137 189 OUTDOOR UNIT UNITÉ EXTÉRIEURE RAF 35NX2 RAC 35NX2 INDOOR UNIT UNITÉ INTÉRIEURE After i...

Page 2: ... JZ Z DANGER ...

Page 3: ... _ b c b b c d b b c b j c c q c c _ u v Z c b ZZ d _ d d _q c d c b c w x c y J _ _ d _ _ DANGER 2 ...

Page 4: ...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 5: ...protégés par exemple pour les compter ou les emballer vous devez veiller à ce que votre corps soit électriquement relié à la terre Pour cela portez un bracelet conducteur Reliez le bracelet à une résistance de 1MΩ et celle ci à la terre par l intermédiaire d un conducteur 3 Veillez en outre à ce que vos vêtements ne viennent jamais en contact avec le composant même si votre corps est relié à la te...

Page 6: ...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 7: ...V 7 Pendant le contrôle des circuits au cours des opérations d entretien ou d inspection évitez à tout prix la mise en court circuit de la charge par les pointes de contact de l appareil de mesure Fil de cuivre nu pour mise à la terre du corps Surface métallique aluminium acier inoxydable etc Plan de travail Résistance de 1MΩ 1 2W Câble de masse Agrafe Fig 3 Mise à la terre d un plan de travail fe...

Page 8: ...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 10 C...

Page 9: ...ut que la réfrigération ou le chauffage ne reprenne qu après 3 minutes Ce phénomène est normal et dû à un relais temporisé Ce relais temporisé a pour rôle d éviter que le fusible ne fonde ou que des composants ne soient endommagés par une remise en service accidentelle 5 Ce climatiseur ne doit pas être utilisé pour réfrigérer une pièce lorsque la température extérieure est inférieure à 10 C 14 F 6...

Page 10: ...EUR VARISTANCE ANTIPARASITAGE THERMOSTAT CONDENSATEUR DE MOTEUR DE VENTILATEUR PROTECTION DU MOTEUR DE VENTILATEUR PROTECTION CONTRE LES SURCHAUFFES FUSIBLE pour MICROPROCESSEUR RELAIS DE PUISSANCE RELAIS AUTOEXCITE REMOTE CONTROL SWITCH LIQUID CRYSTAL INTERRUPTEUR DE TÉLÉCOMMANDE CRISTAUX LIQUIDES YES RAR 3U1 OUI RAR 3U1 NO NON FUSE CAPACITY CALIBRE DE FUSIBLE RAF 35NX2 NO NON NO NON NO NON NO NO...

Page 11: ... before operating the unit to ensure correct usage of the unit Pay special attention to signs of Warning and Caution The Warning section contains matters which if not observed strictly may cause death or serious injury The Caution section contains matters which may result in serious consequences if not observed properly Please observe all instructions strictly to ensure safety The signs indicate t...

Page 12: ...f the piping length used is longer than usual frost will likely to form TEMPORARY SWITCH Top left and right corners TEMPORARY SWITCH TEMPORARY SWITCH If the remote controller does not work due to battery failure press this switch to start and stop operation This temporary operation will be at the most recent setting made The unit will immediately go into automatic operation once power is switched ...

Page 13: ...STOP TIME TIMER SET TIMER SELECTOR ON TIMER OFF TIMER AUTO SWING NAMES AND FUNCTIONS OF EACH PART REMOTE CONTROLLER This controls the operation of the indoor unit The range of control is about 7 meters If indoor lighting is controlled electronically the range of control may be shorter in some cases the control signal may not be received This unit can be fixed on a wall using the fixture provided B...

Page 14: ...f the air which blows out HI Economical as the room will become warm quickly But you may feel a chill at the beginning MED Quiet LOW More quiet SILENT Silent HEATING OPERATION Use the device for heating when the outdoor temperature is under 21 C When it is too warm over 21 C the heating function may not work in order to protect the device In order to keep reliability of the device please use this ...

Page 15: ...FAN SPEED button the display indicates the setting AUTO The FAN SPEED is HI at first and varies to MED automatically when the preset temperature has been reached HI Economical as the room will become cool quickly MED Quiet LOW More quiet SILENT Silent Press the FUNCTION selector so that the display indicates COOL As the settings are stored in memory in the remote controller you only have to press ...

Page 16: ...3 Press the TIME button again The time indication starts lighting instead of flashing 2 Set the turn off time with the TIMER control button 3 Point the signal window of the remote controller toward the indoor unit and press the RESERVE button The OFF mark starts lighting instead of flashing and the RESERVED sign lights A beep occurs and the TIMER lamp lights on the indoor unit Example The device w...

Page 17: ... manually the swinging range may drift However it will return to the original operation range after a short time 14 HOW TO SET THE SLEEP TIMER Set the current time at first if it is not set before see the pages for setting the current time Press the SLEEP button and the display changes as shown below SLEEP How to Cancel Reservation Point the signal window of the remote controller toward the indoor...

Page 18: ...NGE THE BATTERIES IN THE REMOTE CONTROLLER CIRCUIT BREAKER When you do not use the room air conditioner set the circuit breaker to OFF HOW TO USE THE AIR CONDITIONER EFFECTIVELY 1 An average room temperature setting is probably the best for you as well as being economical Excessive cooling or heating is not recommended for health reasons High electricity bills may also result Close the curtains or...

Page 19: ... dry and prevent mold formation Turn off the circuit breaker 2 Grasp the left and right sides of the front panel and pull it up to remove 1 Attach three front panel bearings to the axis of the front cover Set the hook to face up 2 Close the front panel 3 CLEANING OF FRONT PANEL The front panel can be washed in water It can be kept clean at all times Front panel can be removed and washed in water G...

Page 20: ...links and air blow stops If the remote controller is not transmitting a signal Remote controller display is dim or blank 20 Heating Capability This room air conditioner utilizes a heat pump system that absorbs exterior heat and brings it into a room to be heated As the ambient temperature gets lower heating capability will also lower In such a situation the PAM and inverter work to increase compre...

Page 21: ...ot stable Foreign matter or water accidentally enters the unit interior The power cord gets excessively hot or its insulation is torn or stripped TIMER lamp on the indoor unit display blinks As the nature of the failure can be identified by the blinking cycle check the blinking cycle before turning off the circuit breaker Please contact your sales agent immediately if the air conditioner still fai...

Page 22: ...nt contient des instructions qui si elles ne sont pas observées peuvent causer de graves blessures et même la mort La section portant sur Attention contient des instructions qui si elles ne sont pas observées peuvent avoir de graves conséquences Veuillez suivre toutes les intructions très strictement afin d assurer un maximum de sécurité Le signal possède la signification suivante Des exemples de ...

Page 23: ...ngueur du tuyau utilisé est supérieure à la normale INTERRUPTEUR TEMPORAIRE Angles supérieurs gauche et droit INTERRUPTEUR TEMPORAIRE Si la télécommande ne fonctionne pas parce que lespilessontusées appuyersurcecommutateur pour faire démarrer et arrêter le fonctionnement Ce fonctionnement temporaire a lieu selon le dernier mode saisi L unité se met tout de suite à fonctionner automatiquement quand...

Page 24: ...et de commander l appareil intérieur La limite de distance est d environ 7 métres Si l éclairage intérieur du domicile est placé sous gestion électronique il se peut que la portée utile des signaux de télécommande soit plus courte dans certains cas le signal de commande peut ne pas être reçu Ce dispositif peut être fixé au mur à l aide des accessoires fournis à cet effet Avant de le fixer vérifier...

Page 25: ...de fraîcheur est ressentie pendant les premières minutes de fonctionnement MOYEN Silencieux FAIBLE Encore plus silencieux SILENCE Ultra silencieux FONCTIONNEMENT EN MODE DE CHAUFFAGE Appuyer sur la touche de sélection de mode de fonctionnement pour faire apparaître le mode de fonctionnement CHAUFFAGE Étant donné que les réglages sont conservés dans la mémoire du boîtier de télécommande la seule op...

Page 26: ...ué AUTO L intensité de circulation est réglé sur FORT à la mise en fontion puis se commute automatiquement sur MOYEN dès que la température préréglée est atteinte FORT Réglage économique parce qu il permet de refroidir rapidement l interieur de la pièce MOYEN Silencieux FAIBLE Encore plus silencieux SILENCE Ultra silencieux Appuyer sur la touche de sélection de mode de fonctionnement pour faire ap...

Page 27: ...e mise à l arrêt avec la touche de MINUTERIE 3 Diriger la fenêtre de transmission des signaux du boîtier de télécommande vers l appareil intérieur et appuyer sur la touche RÉSERVE La marque ARRÊT s allume au lieu de clignoter et la marque RÉSERVE s allume Un signal sonore est émis et le témoin MINUTERIE s allume dans l appareil intérieur Exemple L appareil s arrêtera à 23h00 Le réglage de l heure ...

Page 28: ...orisation se déclenche à la place de la minuterie de mise à l arrêt ou de celle de mise en fonction mise à l arrêt réglée au préalable Minuterie de temporisation L appareil intérieur fonctionnera pendant le nombre d heures programmé puis s arrêtera Diriger la fenêtre de transmission des signaux du boîtier de télécommande vers l appareil intérieur et appuyer sur la touche TEMPORISATION Les renseign...

Page 29: ...ement d air réglez le disjoncteur sur OFF COMMENT UTILISER EFFICACEMENT CETTE UNITÉ D AIR CLIMATISÉ 1 Un réglage moyen de la température de la pièce est probablement la solution idéale et la plus économique Trop de froid ou trop de chaleur n est pas bon pour la santé et augmente les frais d électricité Le fait de fermer les rideaux et les stores évite les courants d air chaud ou la déperdition de ...

Page 30: ...pteur sur OFF ARRÊT Fixation 1 Fixer trois supports de panneau avant sur l axe du couvercle avant Mettre le crochet vers le haut 3 NETTOYAGE DE LA PANNEAU AVANT Panneau avant peut être lavée à l eau Elle peut ainsi rester propre en permanence Le panneau avant peut être enlevé et lavé dans l eau Nettoyer doucement le panneau avant avec une éponge douce Quand le climatiseur doit être nettoyé sans en...

Page 31: ...de chauffage l indicateur de fonctionnement clignote et l appareil cesse de souffler de l air Bruit durant le changement de fonctionnement 64 Capacité de chauffage Cette appareil d air climatisé utilise un système de pompe à chaleur qui absorbe la chaleur externe et l achemine vers la pièce pour la chauffer La capacité de chauffage diminue au fur et à mesure que la température diminue Dans ce cas ...

Page 32: ... à celle saisie sur la télécommande car cela dépend du nombre de personnes dans la pièce des conditions internes et externes et de l influence des conditions des autres pièces quand l appareil d air climatisé est utilisée pour plusieurs pièces en même temps L appareil extérieur continue à fonctionner même si elle est débranchée La température saisie n est pas obtenue Voyant OPÉRATION qui clignote ...

Page 33: ...4 For built in installation make sure that the infrared receiver and indicator are not blocked 5 Pipes can be laid out from the right bottom or rear when the unit is viewed from front 6 Keep the clearance shown by for installation 7 For built in installation keep the vertical deflector at top air outlet as flat as possible If it is inclined too much heat will be trapped in the unit which could cau...

Page 34: ... φ φ φ GJ φ Q Q φ T V Y Z Q φ _ Y Y Q G Y j V T Y V Y V T Y Y J Y Y V Y _ T Y Y V q Q z q G G G G G G G G G G J GJ J J G RAF 35NX2 ...

Page 35: ... 208 23 26 841 750 841 750 Handle Air suction 10 10 330 310 Drain hole Drain hole 500 125 12 35 Fixing hole Notch for anchor bolt for 2 φ8 0 bolt Holed for anchor bolt 2 φ12 16 slots for φ8 0 bolt Handle 202 335 288 27 5 19 5 10 91 548 528 5 19 5 162 5 50 Air outlet Rear side Air suction Unit mm 34 ...

Page 36: ...100 200 300 50 MODEL RAC 35NX2 OUTDOOR UNIT 208 23 26 841 750 841 750 10 10 330 310 500 125 12 35 202 335 288 27 5 19 5 10 91 548 528 5 19 5 162 5 50 Unit mm 35 _ j Q V ...

Page 37: ...V OUT PUT WATT DE SORTIE NOMINALE 25W 40W ON MARCHE 16 7 62 1 65 7 OFF ARRET 60 8 19 3 66 7 ON MARCHE 76 5 80 1 OFF ARRET 75 2 81 1 ON MARCHE 90 9 94 5 OFF ARRET 89 6 95 5 TEMPERATURE TEMPÉRATURE C F INDICATION INDICATION 16 INDICATION INDICATION 24 INDICATION INDICATION 32 CONNECTION CONNEXION Control circuit built in Circuit de commande incorporé BLU BLUE YEL YELLOW BRN BROWN WHT WHITE BLEU JAUN...

Page 38: ...ycle has been operated for a long time with the capillary tubes clogged or crushed or with too little refrigerant check the color of the refrigerating machine oil inside the compressor If the color has been changed conspicuously replace the compressor WHITE COMPRESSOR YELLOW RED FRONT SIDE OF OUTDOOR UNIT OUTPUT OUTPUT ...

Page 39: ... q q _ q ＣＯＮＴＲＯＬＰＷＢ q G J q Z q q q j J G q G G RAF 35NX2 RAC 35NX2 OUTDOOR UNIT 38 ...

Page 40: ...PÉRATURE DE LA PIÈCE THERMISTANCE D ÉCHANGEUR DE CHALEUR CAPTEUR D HUMIDITÉ C I CONTRÔLE TÉLÉCOMMANDE AVEC CÂBLE TÉLÉCOMMANDE SANS FIL MOTEUR 1 DE BALAYAGE AUTOMATIQUE BORNIER DE RACCORDEMENT CORDEN DE CONNEXION CN6 TEST INDICATEURS INTERRUPTEUR AUXILIARE ET MODULE DE RÉCEPTION DE LUMIÈRE C I 1 2 3 4 5 6 7 8 9101112 CN3 UN USE M M CN16 CN11 CN11 CN9 H LINK CN7 CN4 RED C D 3 9 BRN RED BRN RED CN10 ...

Page 41: ...SEG25 SEG26 SEG27 SEG28 SEG29 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 9 G E S 8 G E S 7 G E S 6 G E S 5 G E S 4 G E S 3 G E S 2 G E S 1 G E S 0 G E S C C V F E R V S S V A 3 M O C 2 M O C 1 M O C 0 M O C 3 L V 2 L V 1 L V 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 0 7 1 7 2 7 3 7 4 7 5 7 6 7 7 7 8 7 9 7 0 8 ＰＳ１ＰＳ１２Ｃ８０１ μ ＦＲ１２２２０ｋ Ω R1 3 3Ω 1 8W R2 3 3Ω 1 8W R3 3 3Ω 1 ...

Page 42: ...７８８０７２７３１０７１０３１０４７５７５１０９１０９２５２５２５２５２５２５１１３１１２１１６１１８１２５１２４１２０１２１１２２３０２０２３１２８９８７３７３０３０３０３３３３４２３３３３３３３３２７４０４０３９２５３０３０３０３０３０３０３０３０３９３０３０３３３３３３４０３０３０２７２６２６２７３３４１３３３３１５１６８２８３８４２５６２６５５２４５５５４５４５６７４５４７４５４５４５４９ ...

Page 43: ...０１１２７Ｋ１１１６Ｗ１１１６ＷＲ３０４３００Ｋ５１１６ＷＲ３０３１０ＫＩＣＰ１０８ＡＣＣＰ２Ｅ２０ＩＣＰ２２０ＡＣＣＰ２Ｅ５０ＯｖｅｒＣｕｒｒｅｎｔＰｒｏｔｅｃｔｅｒＺＤ１１１ＺＤ２１１ＺＤ１２１ＲＤ６２ＵＪＮ２ＺＤ１３１ＰＴＺ２０ＡＲＤ５６ＵＪＮ２ＲＬＺ６８ＡＬＥＤＬＤ２０１ＬＤ２０２ＬＤ２０３ＳＥＬ６４１４ＥＳＥＬ６９１４ＡＳＥＬ６８１４ＡＧｒｅｅｎＹｅｌｌｏｗＯｒａｎｇｅ９０８５９８９９３３３ ...

Page 44: ... 43 MODEL AX 8T11 SELF CHECK SELF MODE SERVICE SW PQ1 PQ2 PQ401 PQ402 PQ403 PQ404 PQ701 RED RED RED RAC 35NX2 ...

Page 45: ... 44 AX 8T11 SELF CHECK SELF MODE SERVICE SW PQ1 PQ2 PQ401 PQ402 PQ403 PQ404 PQ701 RED RED RED RAC 35NX2 ...

Page 46: ...rcuit Reset circuit Temporary switch Wireless remote control C D C D Outdoor microcomputer AX 8V11 OUTDOOR UNIT POWER RELAY Inrush current Protection circuit HARMONICS IMPROVEMENT CIRCUIT IPM Rotor magnetic pole position detection circuit lp ld ls Overheat thermistor Defrost thermistor Outdoor temperature thermistor Indoor Outdoor interface circuit Reversing valve coil Power circuit Reset circuit ...

Page 47: ... magnetic pole position detection circuit lp ld ls Overheat thermistor Defrost thermistor Outdoor temperature thermistor Indoor Outdoor interface circuit Reversing valve coil Power circuit Reset circuit Outdoor DC fan motor RECTIFIER DC compressor motor Relay drive circuit Electric expansion valve Reversing valve control circuit POWER SWITCH Power source 1ø 50Hz 220 230V 46 ...

Page 48: ... forcibly for 3 minutes Start stop swith Operation lamp Fan speeds Hi Hi Med Med Lo Lo Set to Ultra Lo Lo or Stop depending on the room temperature and time Set to Stop if the room temperature is 18 in the Ultra Lo mode other than during preheating cooling is recovered at 18 33 The fan speed is controlled by the heat exchanger temperature the overload control is executed as in the following diagra...

Page 49: ... 48 button MODEL RAF 35NX2 BASIC MODE 29 31 31 31 35 33 ...

Page 50: ... DFMAX TDF431 TDF431_CHG DEFCOL FCLN FWSS FWSOY FWS FWKAF FWL FWAH FWH FWAHH FWHH FCSOY FCS FCL FCAH FCH FCHH FDSOY FDS1 FDS2 90 sec STARTDF1 TDF411 TDF412 STARCPDH TDF413 FWSS FWSOY FWS FWKAF FWL Hi Set fan speed Hi FWAH Ultra Hi FWAHH Ultra Hi FWH Hi Set fan speed AUTO FWHH FCSOY FCS FCL FCAH FCH FCHH FDSOY FDS1 FDS2 Table 2 Room temperature shift value Shift value Fan speed AUTO Hi Med SHIFTW F...

Page 51: ...SDRPM WMINHI WMIN CMINHI CMIN DMIN STAROTP STARTM2 STARTM3 PKOU FZZY_GN FZZYTM SHIFTW SFTSZW SHIFTC SHIFTD TEION TEIOF DFTIM_COL DFTIM_FST DFTIM_0TP0 DFTIM_0TP5 DFTIM_0TP10 STARCPL STARCPH STARCP2 STARCP3 STARTMW STARTMC STARTMD STARTDF2 DFRPM3 STARCPDL STARCPD2 DFMXTM DFMAX TDF431 TDF431_CHG DEFCOL FCLN FWSS FWSOY FWS FWKAF FWL FWAH FWH FWAHH FWHH FCSOY FCS FCL FCAH FCH FCHH FDSOY FDS1 FDS2 START...

Page 52: ...es have elapsed after cool dash was started when the room temperature reaches the cooling set temperature 1 C including cooling shift and then becomes lower than the preset temperature by 0 66 C after the steady speed period when thermo is OFF if cool dash finished in the above the compressor does not go through the steady speed period but it starts fuzzy control 3 The thermo OFF temperature durin...

Page 53: ... Q k k k k k k k k k k ＣＬＭＸＴＰ Q Q １ k k k k k k k k k k Q Q Q Q Q Q Q k k Q k k k k Q k k Q Q 52 ...

Page 54: ...e even when the fan speed mode is changed 5 When operation is stopped during sleep operation the set temperature when stopped as well as the time continue to be counted 6 If the set time is changed during sleep operation all data including set temperature time etc is cleared and restarted 7 If sleep operation is canceled by the cancel key or sleep key all data is cleared 8 The indoor fan is stoppe...

Page 55: ...touche de veille est réglée la vitesse maximale du compresseur est limitée à CBEMAX et le ventilateur intérieur est réglé à Sleep Silent FCSOY 3 Si le mode opératoire est changé pendant la veille la température réglée est effacée et le changement commence à partir du point où la commutation a été faite 4 La vitesse du ventilateur intérieur ne change pas même si le mode vitesse de ventilateur est c...

Page 56: ... deflector Outdoor fan Indoor fan Timer lamp Sleep key Operation lamp SLEEP on the remote controller is lit Hi Med Lo Sleep Silent Facing up Horizontal Shut Set to 2 hours Lo S 1 h r 2 h r 0 5 h r Dehumidifying Notes 1 The sleep operation starts when the sleep key is pressed 2 When the sleep key is set the indoor fan is set to Sleep Silent FDOY 3 If the operation mode is changed during sleep opera...

Page 57: ... k k k kQ Q Q Q Q k k k k Q Q k k Q Q Q Q Q Q Q Q 56 ...

Page 58: ... 6 The operation indicator blinks every second during initial cycle operation preheating defrosting including balance time after defrosting is ﬁnished or auto fresh defrosting 7 For preheating judgment preheating starts if the heat exchange temperature is lower than YNEOFC and is cancelled if the heat exchange temperature is YNEOF plus 0 33 or higher at the start of operation using the START STOP ...

Page 59: ... k k re re Q Q Q Q k kQ k kQ k k Q Q Q Q Q Q k k k kQ k k Q k kQ Q Q Q Q k k k k k k 58 ...

Page 60: ...is no preset temperature shift due to time elapse Heating Sleep Operation 1 min WMIN DFMAX Compressor speed TDF 411 TDF 412 TDF 413 TDF421 WMAX TDF 431 STARCPL STARCPL 4000min 4000min TDF 422 Notes 1 The defrosting inhibit period is set as shown in the diagram below When defrosting has finished once the inhibit period is newly set based on the outdoor temperature when the compressor was started Du...

Page 61: ...eille 2 Lorsque le touche de Veille est réglé la vitesse maximal du compresseur est limitée à WBEMAX et le ventilateur intérieur est réglé sur Sleep Silent 3 Si le mode de fonctionnement est changé pendant le fonctionnement en veille le mode de fonctionnement changé est réglé et le contrôle de veille démarre 4 La vitesse du ventilateur intérieur ne change pas même lorsque le mode de vitesse du ven...

Page 62: ...SUCTION TANK SUCTION TANK 61 ...

Page 63: ... 2 6 ...

Page 64: ... 63 ...

Page 65: ...1 Enlevez les filtres 2 Enlevez la poussière des filtres à l aide d un aspirateur Utilisez un détergent neutre rincez à l eau propre et séchez à l ombre 3 Attachez les filtres 4 Comment refermer le panneau frontal 1 Pour fermer le capot avant appuyez sur sa partie centrale supérieure 2 Appuyez sur les coins supérieurs gauche et droit du capot avant 5 Enlèvement Assurez vous d utiliser vos deux mai...

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Page 73: ... 5 T X 5 X Y X 7 X W 5 T Z X 0 Z 9 8 72 ...

Page 74: ...Ｃ１１２ＩＣ１１１２３８５６４７１Ｌ T Ｒ 7 Ｃ１３２ＺＤ１３１ＭＣＮ１０１２３４５６ 7 T Ｒ T ＭｏｔｏｒＩｎｄｏｏｒＦａｎ 0 5 _ L 0 J Ｃ１０５ＩＮＯＵＴＧＮD Ｄ１２１０ＶＺＤ１２１Ｒ１１８Ｃ１０３３５ＶＩＣＰ２Ｃ１１５Ｌ１１１Ｃ１１４Ｄ１１１Ｒ１１９ＩＣＰ１Ｃ１０２１２Ｖ５ＶＣ１２１ＩＣ１２１Ｃ１２３Ｃ１２２ＸＡ６ＰＴｏｐ W W8 7T B T T L 0J Dj 8 7T RAF 35NX2 73 ...

Page 75: ...２ＩＣ１１１２３８５６４７１Ｌ T Ｒ 7 Ｃ１３２ＺＤ１３１ＭＣＮ１０１２３４５６ 7 T Ｒ T 0 5 _ 5 X 0 Ｃ１０５ＩＮＯＵＴＧＮD Ｄ１２１０ＶＺＤ１２１Ｒ１１８Ｃ１０３３５ＶＩＣＰ２Ｃ１１５Ｌ１１１Ｃ１１４Ｄ１１１Ｒ１１９ＩＣＰ１Ｃ１０２１２Ｖ５ＶＣ１２１ＩＣ１２１Ｃ１２３Ｃ１２２ＸＡ６ＰＴｏｐ W W8 8 7T 0 X jX X 7T Z X X Z X X B Y B B T T B Y Z X L X 0J jD 9 RAF 35NX2 74 ...

Page 76: ...icrocomputer When power ON 5V voltage rises and reaches 4 4V pin 1 of IC521 is set to Hi At this time the microcomputer starts operation When power OFF voltage drops and reaches 4 2V pin 1 of IC521 is set to Low This will RESET the microcomputer Power OFF Power ON Reset enter at 4 2V Reset release at 4 4V Voltage Voltage Voltage supply to pin 2 of IC521 Voltage at pin 7 of microcomputer 5 0V Fig 2...

Page 77: ...icrocomputer When power ON 5V voltage rises and reaches 4 4V pin 1 of IC521 is set to Hi At this time the microcomputer starts operation When power OFF voltage drops and reaches 4 2V pin 1 of IC521 is set to Low This will RESET the microcomputer Power OFF Power ON Reset enter at 4 2V Reset release at 4 4V Voltage Voltage Voltage supply to pin 2 of IC521 Voltage at pin 7 of microcomputer 5 0V Fig 2...

Page 78: ... 88 T W 7 8 0 L 0 J 0 5 _ 7T 0 W8 W 8 8 _ 8 8 5 T j T T 5 7 7 W 7 T 0 T G 0 T 5 T T T 7 B 8 D 888 8 88G B L 88 8 L 8 8 0 j _ G _ T 7 5 W8 W W8 Fig 3 1 Fig 3 1 3 77 ...

Page 79: ... 88 T W 7 8 0 j 7T j T 0 W8 W 8 8 _ 8 8 5 T T 5 7 7 W 7 X X X 0 0 T G B T j j B 5 T T B j T 7 j B B Z B 8 D 888 8 88 G j Y B Q 88 8 78 j 8 W8 W W8 j T 0 L _ 0 _ G _ T 7 Fig 3 1 Fig 3 1 3 78 ...

Page 80: ... 7 G B X 78 8 5 J 0 0 K 78 5 L5DjD L_ E 0 5 5 L55 8 8 _ K 7 7 5 T 5 Fig 4 1 Fig 5 1 4 Fig 4 2 5 79 ...

Page 81: ... X j B X Z 7 G B j B X Z B Z X jX B B X 78 8 5 X X 0 B B J 0 K 78 j Q X B L 5 D DE5 0 5 5 L55 8 8 _ K 7 7 5 T 5 Fig 4 1 4 Fig 4 2 5 Fig 5 1 80 ...

Page 82: ... L L W8 L W8 D 5J0 L W8 0 D 5J0 j 8 8 8 T T T W8 L W8 D 5J0 5W8W 5W87 7 W T G J 0 5 8 W W 8 T 6 Fig 6 1 Fig 7 1 7 81 ...

Page 83: ... L W8 j B X Q L W8 D 5J0 Q X j X L W8 B LX 0 0 j 8 8 8 T T T W8 L W8 D 5J0 5W8W 5W87 7 W T L jX B X j B X X J B L 0 5 L 8 W W 8 T 6 Fig 6 1 Fig 7 1 7 82 ...

Page 84: ...r the outdoor unit is composed of two P W B a power P W B and main P W B and a harmonics improvement circuit as shown in Fig 1 1 This P W B is equipped with the rectification diode DC fan motor control circuit and the circuits around the micro computer which take various controls POWER P W B This P W B is equipped with the noise filter ICP power circuit interface circuit smoothing capacitor expans...

Page 85: ...r the outdoor unit is composed of two P W B a power P W B and main P W B and a harmonics improvement circuit as shown in Fig 1 1 This P W B is equipped with the rectification diode DC fan motor control circuit and the circuits around the micro computer which take various controls POWER P W B This P W B is equipped with the noise filter ICP power circuit interface circuit smoothing capacitor expans...

Page 86: ... L1 C023 and L2 The DB3 L1 C023 and L2 shape waveform of the input current When the current runs through the L1 is taken for I1 and the current runs through the L2 is taken for I2 as shown in Fig 2 2 I1 becomes an input current to the capacitor which peak value was crushed by the L1 and I2 becomes a resonance current which causes the LC resonance using the L2 and C023 By combining the I1 and I2 th...

Page 87: ... L1 C023 and L2 The DB3 L1 C023 and L2 shape waveform of the input current When the current runs through the L1 is taken for I1 and the current runs through the L2 is taken for I2 as shown in Fig 2 2 I1 becomes an input current to the capacitor which peak value was crushed by the L1 and I2 becomes a resonance current which causes the LC resonance using the L2 and C023 By combining the I1 and I2 th...

Page 88: ...ctrical noise generated during operation of compressor and also absorb external noise entering from power line to protect electronic parts Be sure to connect the earth cable between the indoor unit and the outdoor unit Otherwise the noise filter circuit won t operate properly 6 SA1 and VS1 to VS3 These surge absorber and varistors absorb external power surge such as induced thunder Be sure to conn...

Page 89: ...ctrical noise generated during operation of compressor and also absorb external noise entering from power line to protect electronic parts Be sure to connect the earth cable between the indoor unit and the outdoor unit Otherwise the noise filter circuit won t operate properly 6 SA1 and VS1 to VS3 These surge absorber and varistors absorb external power surge such as induced thunder Be sure to conn...

Page 90: ...equest signal The receiving circuit in the indoor unit consists of a comparator and transistor The interface signal from the outdoor unit on the DC 35V line is supplied to C821 where DC components are eliminated and is then shaped by the comparator The shaped signal is detected by diode amplified by amp and output to pin 49 of the indoor microcomputer Fig 3 2 shows the waveforms at each component ...

Page 91: ...equest signal The receiving circuit in the indoor unit consists of a comparator and transistor The interface signal from the outdoor unit on the DC 35V line is supplied to C821 where DC components are eliminated and is then shaped by the comparator The shaped signal is detected by diode amplified by amp and output to pin 49 of the indoor microcomputer Fig 3 2 shows the waveforms at each component ...

Page 92: ...Fig 3 1 shows the interface circuit used for the indoor and outdoor microcomputers to communicate with each other Fig 3 1 Control P W B 91 ...

Page 93: ...Fig 3 1 shows the interface circuit used for the indoor and outdoor microcomputers to communicate with each other Fig 3 1 Control P W B 92 ...

Page 94: ...5V 0V 0V 35V Outdoor microcomputer Pin 11 Pin 68 Indoor microcomputer Pin 50 Pin 49 Fig 3 2 Voltages Waveforms of Indoor Outdoor Microcomputers Outdoor to Indoor Communications Fig 3 3 Voltages Waveforms of Indoor Outdoor Microcomputers Indoor to Outdoor Communications Outdoor microcomputer Pin 11 Pin 68 Indoor microcomputer Pin 50 Pin 49 93 ...

Page 95: ...5V 0V 0V 35V Outdoor microcomputer Pin 11 Pin 68 Indoor microcomputer Pin 50 Pin 49 Fig 3 2 Voltages Waveforms of Indoor Outdoor Microcomputers Outdoor to Indoor Communications Fig 3 3 Voltages Waveforms of Indoor Outdoor Microcomputers Indoor to Outdoor Communications Outdoor microcomputer Pin 11 Pin 68 Indoor microcomputer Pin 50 Pin 49 94 ...

Page 96: ...ations waveforms Leader 100ms Leader 100ms When reset approx 100ms When reset approx 10ms 35 V 34 V 36 V 0 7 0 7 7 7 0 33 3ms 3 2 1 NO 0 Bit No 0 7 0 7 0 7 0 7 Bit No 0 3 2 1 33 3ms 33 3ms 33 3ms Transmit receive switching time 4 95ms 33 3ms 33 3ms Outdoor message Indoor message 33 3ms 33 3ms 0 Character No 1 frame 100ms 33 3ms 8 4 95ms 371 35ms 2 Indoor microcomputer to outdoor microcomputer HIC ...

Page 97: ...ations waveforms Leader 100ms Leader 100ms When reset approx 100ms When reset approx 10ms 35 V 34 V 36 V 0 7 0 7 7 7 0 33 3ms 3 2 1 NO 0 Bit No 0 7 0 7 0 7 0 7 Bit No 0 3 2 1 33 3ms 33 3ms 33 3ms Transmit receive switching time 4 95ms 33 3ms 33 3ms Outdoor message Indoor message 33 3ms 33 3ms 0 Character No 1 frame 100ms 33 3ms 8 4 95ms 371 35ms 2 Indoor microcomputer to outdoor microcomputer HIC ...

Page 98: ...1 Self diagnosis 0 LSB Outside temperature 0 LSB Compressor during operation Compressor command speed 0 LSB Compressor minimum rotation speed 0 LSB Compressor minimum rotation speed 1 Compressor minimum rotation speed 2 Compressor minimum rotation speed 3 Compressor minimum rotation speed 4 MSB Compressor command speed 1 Compressor command speed 2 Compressor command speed 3 Compressor command spee...

Page 99: ...1 Self diagnosis 0 LSB Outside temperature 0 LSB Compressor during operation Compressor command speed 0 LSB Compressor minimum rotation speed 0 LSB Compressor minimum rotation speed 1 Compressor minimum rotation speed 2 Compressor minimum rotation speed 3 Compressor minimum rotation speed 4 MSB Compressor command speed 1 Compressor command speed 2 Compressor command speed 3 Compressor command spee...

Page 100: ...igent power module and its peripheral circuit The three transistors on the positive e side are called the upper arm and the three transistors on the negative d side the lower arm Fig 4 1 Intelligent power module circuit U is ON V is ON IP limitter E E E 99 ...

Page 101: ...igent power module and its peripheral circuit The three transistors on the positive e side are called the upper arm and the three transistors on the negative d side the lower arm Fig 4 1 Intelligent power module circuit U is ON V is ON IP limitter E E E 100 ...

Page 102: ...ig 4 3 shows voltage waveform at each point shown in Figs 4 1 and 4 4 First half of upper arm is chopper second half is ON and first half of lower arm is chopper second half is ON U diode Point A Fig 4 4 When power is supplied U V because of that U is chopped current flows as shown below 1 When U transistor is ON U transistor U coil V coil V transistor DC current detection resistor Point B Fig 4 1...

Page 103: ...ig 4 3 shows voltage waveform at each point shown in Figs 4 1 and 4 4 First half of upper arm is chopper second half is ON and first half of lower arm is chopper second half is ON U diode Point A Fig 4 4 When power is supplied U V because of that U is chopped current flows as shown below 1 When U transistor is ON U transistor U coil V coil V transistor DC current detection resistor Point B Fig 4 1...

Page 104: ...n U transistor and V transistor is ON the current waveform at point B becomes intermittent waveform as shown in Fig 4 3 Since current at point B is approximately proportional to the input current of the air conditioner input current is controlled by using DC current Id Table 4 1 Ip peak current cut LD301 Blinks 2 times Blinks 3 times Blinks 4 times LD301 LD301 Self diagnosis Self diagnosis lamp an...

Page 105: ...n U transistor and V transistor is ON the current waveform at point B becomes intermittent waveform as shown in Fig 4 3 Since current at point B is approximately proportional to the input current of the air conditioner input current is controlled by using DC current Id Table 4 1 Ip peak current cut LD301 Blinks 2 times Blinks 3 times Blinks 4 times LD301 LD301 Self diagnosis Self diagnosis lamp an...

Page 106: ...the inverter is driving the IPM outputs the Fail In this step the Q501 is turned on and the input signal of the upper arm is also shut off through the D501 and D502 so that all signals to the IGBT are shut off This signal is also distributed to two time signal into stand by state 3 minutes after this state the micro computer outputs the drive signal and restarts the operation signal immediately fr...

Page 107: ...the inverter is driving the IPM outputs the Fail In this step the Q501 is turned on and the input signal of the upper arm is also shut off through the D501 and D502 so that all signals to the IGBT are shut off This signal is also distributed to two time signal into stand by state 3 minutes after this state the micro computer outputs the drive signal and restarts the operation signal immediately fr...

Page 108: ...ly for microcomputer peripheral circuits and IPM driver circuit and as well as DC 35V are produced by switching power circuit Switching power circuit performs voltage conversion effectively by switching transistor IC1 to convert DC 330V voltage to high frequency of about 20kHz to 200kHz AC220 230V Fig 5 1 107 ...

Page 109: ...ly for microcomputer peripheral circuits and IPM driver circuit and as well as DC 35V are produced by switching power circuit Switching power circuit performs voltage conversion effectively by switching transistor IC1 to convert DC 330V voltage to high frequency of about 20kHz to 200kHz AC220 230V Fig 5 1 108 ...

Page 110: ...ved loads If any error is found in this step the power circuit has any failure Replace the power P W B A short circuited load may cause an output error not only in the load but also in the others Be sure to check all outputs of the loads Be sure to wait 15 minutes or more in order to discharge all the remaining voltage in the circuit to connect disconnect the wiring other wise the components may b...

Page 111: ...ved loads If any error is found in this step the power circuit has any failure Replace the power P W B A short circuited load may cause an output error not only in the load but also in the others Be sure to check all outputs of the loads Be sure to wait 15 minutes or more in order to discharge all the remaining voltage in the circuit to connect disconnect the wiring other wise the components may b...

Page 112: ...ing the whole input of this room air conditioner system through the current sensor CT1 in order to keep the maximum rating of components by reading total operating current ID OVL is watching and limits the compressor current through the detection resistor which is built in IPM in order to control the compressor reliability Since the compressor reliability is related with its curve All of OVL opera...

Page 113: ...ing the whole input of this room air conditioner system through the current sensor CT1 in order to keep the maximum rating of components by reading total operating current ID OVL is watching and limits the compressor current through the detection resistor which is built in IPM in order to control the compressor reliability Since the compressor reliability is related with its curve All of OVL opera...

Page 114: ...d supplied to microcomputer pin 60 The microcomputer Fig 6 4 shows the rotation speed control When the voltage at pin 60 of the microcomputer exceeds the set value the microcomputer decreases the rotation speed of the compressor and reduces the load Fig 6 3 shows the rotation speed control When the voltage at pin 61 of the microcomputer exceeds Judgment value according to rotation speed internal j...

Page 115: ...d supplied to microcomputer pin 60 The microcomputer Fig 6 4 shows the rotation speed control When the voltage at pin 60 of the microcomputer exceeds the set value the microcomputer decreases the rotation speed of the compressor and reduces the load Fig 6 3 shows the rotation speed control When the voltage at pin 61 of the microcomputer exceeds Judgment value according to rotation speed internal j...

Page 116: ...DC voltage multiplied by DC current R247 R248 R249 are provided to perform the same overload judgement even when the voltage varies It is required to maintain the start current DC current constant to smooth the start of the DC motor of the compressor RAC E14H2 uses software to control the start current The start current varies when supply voltage varies This control method copes with variations in...

Page 117: ...DC voltage multiplied by DC current R247 R248 R249 are provided to perform the same overload judgement even when the voltage varies It is required to maintain the start current DC current constant to smooth the start of the DC motor of the compressor RAC E14H2 uses software to control the start current The start current varies when supply voltage varies This control method copes with variations in...

Page 118: ...e voltages rise and 12V line voltage reaches 10 9V an reset voltage input to pin 48 of microcomputer is set to Hi Reset voltage will be hold Hi until the 12V line voltage drops to 9 90V even though the power shuts down Fig 6 7 Fig 6 8 MAIN P W B Microcomputer RESET OUT RESET 56 48 C204 0V R252 1 0V 8 2 3 IC5 1 2 5V D208 R287 C215 R284 R286 C225 R285 C226 R292 R289 R288 0V 0V 0V 0V 12V 12V line 12V...

Page 119: ...e voltages rise and 12V line voltage reaches 10 9V an reset voltage input to pin 48 of microcomputer is set to Hi Reset voltage will be hold Hi until the 12V line voltage drops to 9 90V even though the power shuts down Fig 6 7 Fig 6 8 MAIN P W B Microcomputer RESET OUT RESET 56 48 C204 0V R252 1 0V 8 2 3 IC5 1 2 5V D208 R287 C215 R284 R286 C225 R285 C226 R292 R289 R288 0V 0V 0V 0V 12V 12V line 12V...

Page 120: ...tored inside the microcomputer starts defrosting control During defrosting operation the microcomputer transfers the defrosting condition command to the indoor microcomputer via the circuit interface transfers it to the indoor unit thus controlling the compressor rotation speed according to the value set at the EEPROM in the indoor unit and switching the operation status outdoor fan on off etc in ...

Page 121: ...tored inside the microcomputer starts defrosting control During defrosting operation the microcomputer transfers the defrosting condition command to the indoor microcomputer via the circuit interface transfers it to the indoor unit thus controlling the compressor rotation speed according to the value set at the EEPROM in the indoor unit and switching the operation status outdoor fan on off etc in ...

Page 122: ...V About 0 8V About 0 8V Collector voltage of Q701 MAX rotation speed instructed by indoor microcomputer after defrost is completed 8 Reversing valve control circuit Reversing valve control circuit will switch reversing valve ON OFF cooling ON according to instruction Voltage at Q701 between Collector and Emittor in each operation condition is approximately as shown in Table 8 1 when measured by mu...

Page 123: ...V About 0 8V About 0 8V Collector voltage of Q701 MAX rotation speed instructed by indoor microcomputer after defrost is completed 8 Reversing valve control circuit Reversing valve control circuit will switch reversing valve ON OFF cooling ON according to instruction Voltage at Q701 between Collector and Emittor in each operation condition is approximately as shown in Table 8 1 when measured by mu...

Page 124: ...V output Use a 4 phase coil and feed power to the phases 1 and 2 then switch over the filed poles to control the opening of the valve The reference between conducting phase switch over direction and the open close direction are shown in Table 9 1 When the power is turned on approx 0 9 V is applied to the CN15 and the pins 1 to 4 and when no power is supplied 12 V is applied When the power is reset...

Page 125: ...V output Use a 4 phase coil and feed power to the phases 1 and 2 then switch over the filed poles to control the opening of the valve The reference between conducting phase switch over direction and the open close direction are shown in Table 9 1 When the power is turned on approx 0 9 V is applied to the CN15 and the pins 1 to 4 and when no power is supplied 12 V is applied When the power is reset...

Page 126: ...e pulse width FG feedback Slower Instruction Faster Increase pulse width FG pulse is also used for Fan Motor failure detection Microcomputer will monitor FG pulse 30 seconds after start the fan motor If there is no signal detected it will consider that the Fan Motor was malfunction and stop the operation In this case LD302 on control R107 and IC4 are used for Fan Motor over current Vsp high Faster...

Page 127: ...e pulse width FG feedback Slower Instruction Faster Increase pulse width FG pulse is also used for Fan Motor failure detection Microcomputer will monitor FG pulse 30 seconds after start the fan motor If there is no signal detected it will consider that the Fan Motor was malfunction and stop the operation In this case LD302 on control R107 and IC4 are used for Fan Motor over current Vsp high Faster...

Page 128: ...wing inside of outdoor unit by snowing unit will be restart again after a while In case of Fan Lock Stop even though the DC Fan Motor is rotating correctly the possible cause in Fan Motor problem or control board problem Stop after the Fan motor runs 2 minutes Fan Motor may be broken Caution Please take care for the electrical shock by high voltage of DC Fan Motor power source which is common with...

Page 129: ...wing inside of outdoor unit by snowing unit will be restart again after a while In case of Fan Lock Stop even though the DC Fan Motor is rotating correctly the possible cause in Fan Motor problem or control board problem Stop after the Fan motor runs 2 minutes Fan Motor may be broken Caution Please take care for the electrical shock by high voltage of DC Fan Motor power source which is common with...

Page 130: ... Z Z _Z Z _Z Z RA RAC F 35NX2 35NX2 129 ...

Page 131: ... Z _Z Z _Z RA RAC F 35NX2 35NX2 130 ...

Page 132: ... Z 131 ...

Page 133: ... Z 132 ...

Page 134: ... Z 133 ...

Page 135: ... 134 ...

Page 136: ... 135 ...

Page 137: ... 136 ...

Page 138: ...C 35NX2 Indoor Controller Outdoor Controller Power Switch Point 400 F I P M Compressor motor Point line Control P W B Main P W B Voltage at point A Ground voltage Grounding 350V Point B 0V line Power inlet 137 ...

Page 139: ...or Controller Outdoor Controller Power Switch Point 400 F I P M Compressor motor Point line Control P W B Main P W B Voltage at point A Ground voltage Grounding 350V Point B 0V line Power inlet RAC 35NX2 138 ...

Page 140: ...thing capacitors Discharge Procedure 1 Turn off the power of the indoor unit or pull out the power supply plug 2 After power is turned off wait for 10 minutes or more Then remove electrical parts cover and apply soldering iron of 30 to 75 W for 15 seconds or more to TAB3 GRAY and TAB4 RED terminals on the main P W B as shown in the figure below in order to discharge voltage in smoothing capacitor ...

Page 141: ...thing capacitors Discharge Procedure 1 Turn off the power of the indoor unit or pull out the power supply plug 2 After power is turned off wait for 10 minutes or more Then remove electrical parts cover and apply soldering iron of 30 to 75 W for 15 seconds or more to TAB3 GRAY and TAB4 RED terminals on the main P W B as shown in the figure below in order to discharge voltage in smoothing capacitor ...

Page 142: ... 141 ...

Page 143: ... _ 14 2 ...

Page 144: ... 1 RAF 35NX2 143 ...

Page 145: ...ec 2 fois 3 fois 9 fois 13 fois 2 sec 2 sec 2 sec 2 sec IC401 défectueux Vanne d inversion défectueuse Fonctionnement forcé de l unité extérieure Interface intérieur extérieur défectueuse Mode clignotement de lampe Défaillance principale Capteur intérieur défectueux 4 fois 2 sec Indication extérieur défectueuse 10 fois 2 sec Rotation anormale du moteur de ventilateur CC supérieur S allume 0 35 sec...

Page 146: ...SELF DIAGNOSIS LIGHTING MODE MODEL RAC 35NX2 IPM INTELLIGENT POWER MODULE SELF DIAGNOSIS LAMPS LD301 LD302 LD303 SERVICE SWITCH 145 ...

Page 147: ...MODEL RAC 35NX2 IPM INTELLIGENT POWER MODULE SELF DIAGNOSIS LAMPS LD301 LD302 LD303 SERVICE SWITCH 146 MODE D ECLAIRAGE DU VOYANT D AUTO DIAGNOSTIC ...

Page 148: ...If the compressor checker for an inverter type air conditioner is available re check using it JUDGING BETWEEN GAS LEAKAGE AND COMPRESSOR DEFECTIVE Blinking off Time until the lamp lights Approx 10 seconds Approx 10 seconds Approx 10 seconds Within Approx 30 seconds Compressor Compressor Gas leakage Possible malfunctioning part LD301 Self diagnosis lamp Lighting mode Blinks 2 times Blinks 3 times B...

Page 149: ...If the compressor checker for an inverter type air conditioner is available re check using it JUDGING BETWEEN GAS LEAKAGE AND COMPRESSOR DEFECTIVE Blinking off Time until the lamp lights Approx 10 seconds Approx 10 seconds Approx 10 seconds Within Approx 30 seconds Compressor Compressor Gas leakage Possible malfunctioning part LD301 Self diagnosis lamp Lighting mode Blinks 2 times Blinks 3 times B...

Page 150: ... ª ＣＮ１１ＡＣＮ６ＣＮ４ＣＮ３ＣＮ１ＣＮ１０ＣＮ７ＣＮ１６５６１８２０ MODEL RAF 35NX2 RAC 35NX2 149 ...

Page 151: ...ＣＮ１１ＡＣＮ６ＣＮ４ＣＮ３ＣＮ１ＣＮ１０ＣＮ７ＣＮ１６５６１８２０ 0 1 2 3 4 5 2 6 5 5 4 5 7 8 7 5 7 8 6 9 8 0 5 8 5 7 7 97 7 5 8 1 RAF 35NX2 RAC 35NX2 150 ...

Page 152: ...e Normal No Yes Check the drive circuit IMP using the PRD checker Check the position sensor circuit With the unit set in the operating state press the start stop button Does the unit operate for approximately 2 seconds the LD303 coming on and then stop due to a failure of switching the lamp blinking 4 times OUTDOOR UNIT IPM INTELLIGENT POWER MODULE SELF DIAGNOSIS LAMPS LD301 LD302 LD303 SERVICE SW...

Page 153: ...e Normal No Yes Check the drive circuit IMP using the PRD checker Check the position sensor circuit With the unit set in the operating state press the start stop button Does the unit operate for approximately 2 seconds the LD303 coming on and then stop due to a failure of switching the lamp blinking 4 times OUTDOOR UNIT IPM INTELLIGENT POWER MODULE SELF DIAGNOSIS LAMPS LD301 LD302 LD303 SERVICE SW...

Page 154: ... 0 45 6 65 0 1 45 5 450 1 0 69 0 153 ...

Page 155: ... 0 45 6 65 8 5 8 0 5 8 8 5 5 5 45 5 4 50 0 6 9 7 7 7 7 7 7 7 7 154 ...

Page 156: ... 0 9 0 1 0 0 45 65 5 4 6 4 6 0 6 澎潦 2 3 4 155 ...

Page 157: ... 0 9 0 5 5 0 0 4 5 6 5 5 5 7 7 7 4 6 4 6 0 7 6 7 7 7 8 8 澎潦 2 3 4 156 ...

Page 158: ...ely Replace IC121 Check if a short occurs in the 5V line If the 5V line is shorted ICP1 will be open again Check to see if the connection cables are disconnected or reversed If normal check the outdoor unit P W B Has the terminal board thermal fuse blown open Replace Q111 and IC111 Is DC5V being generated Perform final operation check When the unit is not in operation the voltage across the 35V li...

Page 159: ... 0 5 5 8 7 9 0 5 30 6 5 0 5 8 0 4 5 5 4 5 4 5 6 5 7 7 7 7 7 158 ...

Page 160: ... 4 7 7 0 7 77 0 7 7 0 4 8 0 7 7 4 0 7 7 7 0 7 7 0 7 9 7 0 159 ...

Page 161: ...9 8 4 9 7 0 9 9 77 0 9 0 9 8 4 8 0 9 9 4 0 9 9 9 9 0 9 0 8 8 8 8 0 8 8 160 ...

Page 162: ...or details Is the switching power circuit OK Has the 3A fuse blown Check to see if C and D cables are connected correctly If reversed or incompletely inserted correct the cable connection Replace any defective parts If the 3A fuse has blown the varistor 2 etc may also be defective With the piping and lines L the unit in the forced cooling mode using the outdoor unit service switch How did the self...

Page 163: ...or details Is the switching power circuit OK Has the 3A fuse blown Check to see if C and D cables are connected correctly If reversed or incompletely inserted correct the cable connection Replace any defective parts If the 3A fuse has blown the varistor 2 etc may also be defective With the piping and lines L the unit in the forced cooling mode using the outdoor unit service switch How did the self...

Page 164: ... B Is the fan operating An error occurs after the fan operates for 2 minutes Is the voltage between 4 and 6 at CN24 normal Normally the voltage is above approx DC1 7V Connect the connector Remove any obstructions Replace the fan motor and main P W B Is the voltage between 4 and 7 at CN24 normal Check to see if the voltage is within 2 5V 0 5V using a tester In effect the output voltage is alternate...

Page 165: ... B Is the fan operating An error occurs after the fan operates for 2 minutes Is the voltage between 4 and 6 at CN24 normal Normally the voltage is above approx DC1 7V Connect the connector Remove any obstructions Replace the fan motor and main P W B Is the voltage between 4 and 7 at CN24 normal Check to see if the voltage is within 2 5V 0 5V using a tester In effect the output voltage is alternate...

Page 166: ...e terminal board Apply AC220 230V Check the interior wiring Are TAB 1 TAB 2 TAB 3 TAB 4 TAB 5 TAB 6 TAB 11 TAB 12 reactor and C023 yellow green connected properly Connect properly Replace the power P W B Possible causes include Power relay malfunction Defective microcomputer terminal Yes Yes Yes No No No 165 ...

Page 167: ...e terminal board Apply AC220 230V Check the interior wiring Are TAB 1 TAB 2 TAB 3 TAB 4 TAB 5 TAB 6 TAB 11 TAB 12 reactor and C023 yellow green connected properly Connect properly Replace the power P W B Possible causes include Power relay malfunction Defective microcomputer terminal Yes Yes Yes No No No 166 ...

Page 168: ...eing output between terminals C and D Normal DC32V 39V Standby DC18V 23V Is DC35V being output at both ends of R35 Connect CN 3 and CN4 Connect properly Replace the power P W B Defective SW power supply Replace the power P W B NF coils IF coils etc may be broken Check the interface circuit and replace the main P W B if needed No No No No No Yes Yes Yes Yes Yes 167 ...

Page 169: ...eing output between terminals C and D Normal DC32V 39V Standby DC18V 23V Is DC35V being output at both ends of R35 Connect CN 3 and CN4 Connect properly Replace the power P W B Defective SW power supply Replace the power P W B NF coils IF coils etc may be broken Check the interface circuit and replace the main P W B if needed No No No No No Yes Yes Yes Yes Yes 168 ...

Page 170: ...ing to connect after servicing Is the continuity of the thermistor normal Is the thermistor circuit normal Connect the thermistor Replace the thermistor Replace parts in the thermistor circuit Check continuity of pattern and lead wires according to the P W B and schematic diagrams Yes Yes Yes No No No No 169 ...

Page 171: ...ing to connect after servicing Is the continuity of the thermistor normal Is the thermistor circuit normal Connect the thermistor Replace the thermistor Replace parts in the thermistor circuit Check continuity of pattern and lead wires according to the P W B and schematic diagrams Yes Yes Yes No No No No 170 ...

Page 172: ...r Check the outdoor unit for defective shielding LD301 blinks 4 times Failure of switching Is the 15V power supply output normal Power P W B display Is the intelligent power module IPM normal Inverter section The intelligent power module may be defective Replace the main P W B See System Power Module Diagnosis With CN3 and CN4 disconnected is the 15V output between 15V and 15 0V on the power P W B...

Page 173: ...r Check the outdoor unit for defective shielding LD301 blinks 4 times Failure of switching Is the 15V power supply output normal Power P W B display Is the intelligent power module IPM normal Inverter section The intelligent power module may be defective Replace the main P W B See System Power Module Diagnosis With CN3 and CN4 disconnected is the 15V output between 15V and 15 0V on the power P W B...

Page 174: ... W B LD301 blinks 1 time Reset stop However the unit always resets and stops just after power is supplied this does not indicate a fault Is the reset circuit normal Normally pin 7 of CN18 is approx 5V Replace the main P W B Make sure again that connectors are connected securely Perform final operation check Yes Yes Yes No No 173 ...

Page 175: ... W B LD301 blinks 1 time Reset stop However the unit always resets and stops just after power is supplied this does not indicate a fault Is the reset circuit normal Normally pin 7 of CN18 is approx 5V Replace the main P W B Make sure again that connectors are connected securely Perform final operation check Yes Yes Yes No No 174 ...

Page 176: ... 7 66 66 7 6 0 4 6 7 0 6 7 66 66 0 66 66 2 7 6 7 6 0 2 7 7 2 0 7 0 6 0 6 7 6 0 2 7 7 0 6 0 0 6 7 6 0 175 ...

Page 177: ... 79 17 5 79 66 66 1 6 0 4 6 0 6 66 66 0 2 2 2 8 6 6 0 2 0 8 0 6 0 8 6 6 0 2 0 8 8 6 0 0 6 6 0 4 8 7 7 ª 97 7 7 7 79 9 7 7 7 5 7 79 7 9 7 7 9 7 79 7 7 7 6 7 7 7 7 9 7 7 9 7 7 7 9 7 6 0 7 7 7 9 9 6 0 66 66 66 66 0 176 ...

Page 178: ... sensible area should flash in orange when you operate the remote control 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 ...

Page 179: ... sensible area should flash in orange when you operate the remote control 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 ...

Page 180: ...g System Configuration of Outdoor Unit Electrical Parts Main P W B M board Contains a rectifier circuit and inverter module their controlling microcomputer and microcomputer peripheral control circuits The board incorporates high and low current sections Power P W B P board Contains a switching power circuit noise filter power factor improvement circuit etc The switching power circuit supplies pow...

Page 181: ...g System Configuration of Outdoor Unit Electrical Parts Main P W B M board Contains a rectifier circuit and inverter module their controlling microcomputer and microcomputer peripheral control circuits The board incorporates high and low current sections Power P W B P board Contains a switching power circuit noise filter power factor improvement circuit etc The switching power circuit supplies pow...

Page 182: ... capacitor Designed to improve power factor To replace the capacitor remove the power P W B and then 1 Remove two screws fastening the capacitor seat 2 Slide the capacitor seat in the direction of the arrow Sliding Direction 181 ...

Page 183: ... capacitor Designed to improve power factor To replace the capacitor remove the power P W B and then 1 Remove two screws fastening the capacitor seat 2 Slide the capacitor seat in the direction of the arrow Sliding Direction 182 ...

Page 184: ...d again to stop the forced cool operation 1 Connect the large dia pipe side and small dia pipe side service valve using a pipe Parts to be prepared 1 Reducing union 2 8 6 35 mm 3 8 9 52 mm 2 Copper pipe 2 8 and 3 8 Connect the small diameter service value and the large diameter service valve using the reducing union and copper pipe as shown on the right Charge refrigerant of 300g The operation met...

Page 185: ...d again to stop the forced cool operation 1 Connect the large dia pipe side and small dia pipe side service valve using a pipe Parts to be prepared 1 Reducing union 2 8 6 35 mm 3 8 9 52 mm 2 Copper pipe 2 8 and 3 8 Connect the small diameter service value and the large diameter service valve using the reducing union and copper pipe as shown on the right Charge refrigerant of 300g The operation met...

Page 186: ...diagram of the device Circuit diagram of the module Terminals symbol mark of the module See next page for measuring value using multimeter Collector Emitter IPM Intelligent Power Module DIAGNOSIS SSM1001MA 185 ...

Page 187: ...diagram of the device Circuit diagram of the module Terminals symbol mark of the module See next page for measuring value using multimeter Collector Emitter IPM Intelligent Power Module DIAGNOSIS SSM1001MA 186 ...

Page 188: ...tery connection inside note Sometimes it may misjudge as OK because of low conductivity when power module was damaged as disconnect mode In this case please check the resistance by reversing the probe polarity and consider OK when it was low resistance Also it is OK if the resistance was as same as the other phases U V W Driver circuit internal IC 15V will not be generated when the internal IC has...

Page 189: ...tery connection inside note Sometimes it may misjudge as OK because of low conductivity when power module was damaged as disconnect mode In this case please check the resistance by reversing the probe polarity and consider OK when it was low resistance Also it is OK if the resistance was as same as the other phases U V W Driver circuit internal IC 15V will not be generated when the internal IC has...

Page 190: ...40 39 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 22 24 25 26 27 28 29 30 31 32 33 34 36 37 38 21 35 23 97 5 1 189 ...

Page 191: ... 7 50 29 7 50 29 0 3 683 1 37 50 1 3 25 6 55 683 55 29 16 29 5 3 25 6 3 0 1 3 0 1 3 0 1 3 63 2 5 5 1 26 5 1 5 0 5 0 5 0 5 1 5 1 5 1 5 1 5 1 5 1 5 1 5 1 5 1 5 1 5 1 553 553 553 5 1 7 7 7 5 1 5 1 5 1 5 1 5 1 5 1 5 1 5 6 6 6 6 5 1 5 1 5 1 5 1 5501 5501 5501 5 1 5 1 5 1 5 1 5 1 5 1 5 1 55 55 55 5 1 5 1 5 1 5 1 5 1 5 1 5 1 5 1 5 1 73 73 73 5 1 5 1 550 550 550 5 1 3 576 1R 4 7 3 576 1 0 5 1 12 3 576 1R ...

Page 192: ...30 46 44 47 42 43 45 31 41 38 36 37 35 39 34 32 32 40 25 26 27 28 29 5 33 51 21 19 23 24 22 1 49 48 50 4 3 2 15 12 16 10 11 13 6 8 14 7 20 17 18 52 9 287 225 81 7 02 5 1 191 ...

Page 193: ...4 94 44 4 614 94 9 4 0 1614 5722146 94 44 0 1614 9 MI 94 2412 4 0 94 5 076 2412 4 0 94 8 5 18 4 94 7 0 94 5 4106 18 4 94 9 5 4 4 94 9 4 64 2 465 2 6 94 64 2 465 18 4 94 9 4 6 4 0 2 6 94 442 4 6 4 0 1 4 2 94 4 0 6 5 0 4 74 614 94 0 2 9 0 94 4420 75 94 4420 75 94 44 8 4 5614 94 0 2 9 219 4 94 4420 4 75 94 9 5722146 2 9 94 44 2 614 Ǵ 8 94 9 18 4 176 114 6 4 5614 94 44 6 4 5614 176 114 6 2 94 8 5 18 4...

Page 194: ...AW NO 0035EF RAF 35NX2 RAC 35NX2 ...

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Hitachi RAC-35NX2, Service Manual

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