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SERVICE MANUAL - Amp Air

1. BLACK 77 BLACK Ce DISPLAY BOARD m OUTLET TEMP CAAA THERMISTOR RAY 07 PIPE 875549 BLACK 1 ag V STOR 8765452 ROOM TEMP FAN MOTOR TO REMOTE zu oo 0 CAPACITOR y Tu 3 _ WHITER 2 E P BD CLAY ee Heat Recovery only REMOTE CONTROL 7 YELLOW 312 BLACK RB ii 2 4 8D UNIT BLAK 2 xm gt CREEN 4 CREEN RED 5r mL esL T gt L 5 WHITE WHITE S e 3 3 er DEN
2. PURPLE fy 1 BLUE GRAY 2 2 5 GRAY f3 3 CREEN YELLOM GRAY F7 5 gt e gt I DES GRA 6 5 7 ORAT BLACK n 8 GRAY 8 A THERMISTOR 52 BLACK OUTLET TEMP Sine YELLOW A THERM STOR 52 2 GRAY 5 GRAY 5 27 GRAY e 3929 32 BLACK n CRAY 3 THERMISTOR ZI 52 BLACK ROOM TEMP EXPANSION VALVE COIL PINK BROWN 3 BLUE amp elena MOTOR dy RANGE Ep RIGHT LEFT 2 c 5 5 YELLOW 5 ea For Heat Recovery only 5 2 3 0 S Miete RR BLACKEZ BLACK 4 DIFFUSER WHITES 5 10 5 hil 2 2 REDIT REDE 56 M X STEPP ING LZS SORA 1 O G6 5 UP DOWN cn GREEN FUSE T 3 15 250V REDI IS 1 7 WHITES CU GREEN rare gt 527
3. THERMISTORCOUTLET TEMP END 55 GRAY THERMISTORCPIPE TEMP GRAY AM 2 2 BLAck THERMISTOR ROOM TEMP 2555 BLACK CN2 CN20 CN19 Rn TERN e RD 21859 N VALVE COIL MOTOR 7 IBLITE 2 i BLUE BLUE 3 3 7 ORANGE f ORANGE OF YELLOW 24 YELLOW 51BLACK 5 4 2 WATE 1 WHITE WHITE RED STEPPING MOTOR E LEFT RIGHT merom RED 213 2 2 o ORANGE E WE WHITE 4 5 5 ORANGE FA 0 57 ofa YELLOW YELLOW T STEPPING MOTOR 5 2 UP DOWN 11 BROW 1 Ore BLUE 5 BLUE 5 2 Ein oe GUY RAY a 3 YELLOW 25 5 8 U o WHITE te For Heat Recovery only Use T 3 15A 250V 1 ATA 4 RR Fuse on FTU WHITE FH WHITE UNIT BLACK tj PRED TRED WHITE b PT CREEN sellis gt SHITE 452 ie TS 215 WHITE WHITE 5 FAN MOTOR
4. BLACK BLACK SS OUTLET TEP GRAY FERN _ 81716 51415 2 GRAY SIT THERMISTOR PIPE BLACK THERMISTOR ROOM TEMP 8765432 Uno FAN MOTOR oa ee E CAPACITOR soe E 112 12 12 1 om am TO REMOTE 7 CONTROL UNI 3 Wt A A A Hs For Heat Recovery only 7 YELLOW Ka zla RE REMOTE CONTROL sde 5 2 U zi 0 RED gt 25 WIE 7 BRON S T ers GET c 25 STU ee EL WHITE HS STEPPING MOTOR mcum HL BLAK 25 sho _ 2 FLOAT SWITCH 5 5 0809 qj 1319 WHITE 2 BLAC 3 Eu L wwe mus 2 ES SUPPLY MISSION ale gt 6 PONER SUPPLY TO OUTDOOR WNIT INDOOR UNIT 07 13 E MODELS AU36 AU45 AU54
5. WHITE p BLACK DE MOTOR AN MOTOR CAPACITOR in p 25 WHITE 218 EC 11214 eu PURPLE ty CN3 GRAY IZ BLACK GRA eur 34 THERMIST A 5 3 a WV ERMISTOR GRAY 7 215 BLACK OUTLET TEMP on CRAY FZ lt 5 2 GRA gt E SV THERM I STOR 7 T 7 2 H PIPE TEMP ot 8 opp HHK gt THERMISTOR 2 BLACK ROOM TEMP EXPANSION VALVE COIL PINK BROWN CRA RED 2 2 STEPPING 2 5 CRA 3 lt ORANGE CRA OR YELLOW 5 B 5 WHITE FE lt _ For Heat Recovery only 2 2 STEPPING Blea 5 RE BLACK BLACK bea 4 GRA ne DIFFUSER WHITES 15 CRA E UNIT REDIF RED 55694 S CRA 5 Ores n lg GRA MOTOR 5 UP DOWN L GREEN FUSE T 3 15 250V REDIS WHITE HS CN15 22 1 2 2 3 2 agers gt a lt lt gt gt uu Li Luo 55 S ej mS S zz oe ee 0 REMOTE CONTROL TERMINAL 7 9 3 4 THERMLFUSEIOOU POWER L 10 OUTDOOR UNIT SUPPLY INDOOR UNIT 07 16 CEILING WALL MODELS AW7 AW9 AW14 AW18 AW24 AW30
6. Indoor unit PCB Address setting No 0 15 Setting by rotary SW6 SW7 Always set Rotary SW7 at 0 For compact wall mounted type indoor unit refer to 6 2 2 Remote controller address Indoor unit 0 Fooro 0 011 010212 010313 010410 0 05 o d d d Indoor unit PCB Address setting No 0 15 Setting by rotary SW10 06 06 5 Remote controller switch 1 If 2 sets of wired remote controllers are connected to the remote control group turn the DIP SW 1 1 of Master Remote Controller off d 3 SW1 1 OFF ON ON Master Slave Master Remote controller unit PCB When only 1 remote controller will connect Setting by DIP SW 1 1 this switch must be set ON 6 Number of indoor unit connection 94 71 ON ON OFF Remote controller PCB Setting by DIP SW 1 2 06 07 7 Remote controller switch 2 Remote controller s OFF ON OFF ON Master Slave Master Slave Remote controller unit PCB Setting by DIP SW 1 4 Central remote controller address 22
7. 00 01 02 03 Central remote controller 16 Set central remote controller address first to conduct the initial setting of it 06 08 6 3 PUMP DOWN METHOD 6 3 1 START AND STOP OF THE PUMP DOWN 1 If the following condition is satisfied pump down operation will start When the operation mode is stopped and pump down DIP SW 1 3 turns OFF 2 Pump down operation stops immdiately in the following cases When pump down DIP SW is turned ON OFF When the discharge pressure sensor detects a pressure higher than 3MPa 6 3 2 A FLOW CHART OF PUMP DOWN m OUTDOOR UNIT Operation mode STOP DIP SW 30sec Stand by DIP SW DIP SW OFF Compressor 1 23 OFF Error DIP SW Compressor 113 ON Electronic expansion valve 1 2 500 pulse 6 minutes or longer have elapsed since pump down started or discharge pressure 3 0MPa or greater m INDOOR UNIT Receiving start signal of pump down Electric expansion valve Fully opened RB unit Discharge valve SVo Open Suction valve 5 5 Open Bypass valve SVB1 Close Indoor fan motor SVB2 Open Receiving finish signal of pump down Yes RB unit Discharge valve SV Close Suction SVs Open Indoor fan motor OFF Operation stops 06 09 6 4 TOOLS Gauge manifold
8. all In this mode the UP DOWN air direction flaps will swing automat 2 ically to direct the air flow both down Example When set to vertical swing 04 11 Stop Vertical airflow SWING Operation Press the VERTICAL SWING button for more than two seconds once and again The remote controllers VERTICAL SWING lamp and indoor units SWING indicator lamp VERTICAL SWING will go out Airflow direction will return to the setting before swing was begun Instructions relating to the indoor unit s indicator lamp are applicable to LARGE CEILING TYPE UNIVERSAL FLOOR CEILING TYPE CASSETTE TYPE WALL MOUNTED TYPE COMPACT WALL MOUNTED TYPE and CEILING WALL TYPE Air swing range Expect for compact wall mounted type indoor unit Air flow direction set Range of swing D to Q to Q to amp eem o to All range About Vertical Airflow SWING Operation e The range of swing is relative to the currently set airflow direc tion e If the swing range is not as desired use the remote controller s VERTICAL AIR FLOW DIRECTION SET button to change the range of swing e The SWING operation may stop temporarily when the air condi tioner s fan is not operating or when operating at very low speeds To select Horizontal Airflow SWING Operation This instructions are applicable to LARGE CEILING UNIVERSAL FLOO
9. 22222222 05 02 5 2 OUTDOOR UNIT 55 pn pittura ud Quei gue vi cR DUE 05 03 5 2 1 NORMAL OPERATING 05 03 5 2 2 ABNORMAL OPERATION DISPLAY senem 05 04 9 04 REMOTE CONTROLEER nn er ena Sedes Ug cle oem hr deponit cand Odd quot 05 05 5 3 1 WIRED REMOTE 05 05 5 3 2 SIMPLE REMOTE CONTROLLER 05 05 5 3 3 CENTRAL REMOTE CONTROLLER zus aaa 05 06 5 4 NETWORK CONVERTOR Antes elle 05 09 5 5 ERROR CODE amp 11212 05 10 5 5 1 TROUBLE SHOOTING WITH ERROR 2 05 10 5 5 2 TROUBLE SHOOTING WITH NO ERROR 05 36 5 6 CASE SUCH AS THESE ARE 05 46 6 APPENDING DATA 1 INSTALLATION ADDITIONAL CHARGE eon ieu edo 06 01 0 2 ADDRESS SETTING bad ente chen catene un ta Dude 06 02 6 2 1 KINDS OF ADDRESS AND SETTING 06 02 6 2 2 ADDRESS SETTING FOR COMPACT WALL MOUNTED TYPE INDOOR UNIT etn SiR sa 06 04 6 2 3 EXAMPLES OF SYSTEM SETTING erret cet rentrer at
10. of refrigerant pipes Nominal Outer diameter Thickness 2 Those pipes purchased locally may contain dust diameter inch mm mm inside Please blow out the dust by dried inert gas when using 1 4 6 35 0 8 3 Be careful to avoid the dust or water falling into the 3 8 0 9 52 0 8 pipe when performing piping process and piping 1 2 12 70 0 8 installation 4 When processing the pipe make the number of 5 8 15 88 1 0 bending portion as few possible and the bending 3 4 19 05 1 0 radius as large as possible 1 1 8 28 58 12 5 process the branch do not use T shaped pipe which causes an uneven refrigerant flow Use the optionally available standard branch kit 6 If the diameter of the required pipe is different from the branch unit either cut it out or use the reducer Separation Tube Standard parts 7 Keep the permissible length of every piping limitation to prevent a defect or cooling heating failure 8 When replacing the unit never use piping which has been used for previous installations Only use the new piping 2 Flare connection 1 Confirm that there are not scratches or waster etc on the flare and union surface 2 When using lubrication oil on the inside and outside of flare always use small amount and must the same lubrication oil as used in the refrigerant circuit Use of different oil will cause the lubrication oil to deteriorate and a compressor failure
11. Forbidden Indoor unit model code Wireless remote controller custom code switch 1 Wireless remote controller custom code switch 2 Frost prevention temperature shift switch 5 5 lt DO BY Im BY a Draft prevention setting switch Indoor unit address switch Forbidden Refrigeration circuit address 1 Refrigeration circuit address 2 E SWITCH POSITION e Indoor unit control circuit board For AB AU AR types indoor unit CN19 CN20 CN21 Remote controller address For AS AW types indoor unit WE CN14 CN18 CN24 CN12 CN27 S ii CN2 S9 SW3 SW4 SW5 OO SW6 SW7 SW1 9 02 CN6 CN13 us E CN101 CN101 and CN201 exist CNS CN201 CNY 02 01 2 1 2 INDOOR UNIT CONTROL CIRCUIT BOARD COMPACT WALL MOUNTED TYPE Indoor unit Forbidden Indoor unit fan speed switch 1 Forbidden Indoor unit fan speed switch 2 Forbidden Indoor unit model code Forbidden Indoor unit model cod
12. 00 201 TOP 00 00 18 00 001 CD NET a COND INLET TEP GREEN YELLOW 2 1 5 1510 COD INLET TOP FAN WO iu FAN CAPACITOR C TERMINAL 07 17 CRANK CASE HEATER 7 4 OUTDOOR INTERNAL LAYOUT OUTDOOR UNIT INTERNAL LAYOUT FRONT OIL SEPARATERS EXPANSION VALVES A VANS OUTDOOR UNIT CONTROL BOX INTERNAL LAYOUT POWERRELAY3 1 OUTDOOR P C B POWER RELAY 2 COMMUNICATION POWER RELAY 1 2 RELAY 1 Lo POWER TRANSMISSION RELAY 3 RELAY 2 TERMINAL TERMINAL 07 19 7 5 MODEL DESIGNATION OUTDOOR UNIT TYPE MARKET REGION MODEL CODE FUNCTION TYPE COMPRESSOR MODEL CHANGE SPECIAL METHOD CODE FUNCTION AO OUTDOOR BLANK 380 415V 50Hz kW HEAT RECOVERY P SCROLL 2000 12 MULTI F 380 415 50Hz 99 28 0 R407C 2005 6 Y 380 415 50Hz 2000 12 2003 3 B 2005 7 2003 4 42 52 ST C 2008 9 INDOOR UNIT 1 2 3 4 5 9 10 TYPE MARKET REGION MODEL CODE FUNCTION CONTROL METHOD MODEL CHANGE TYPE REMOTE CONTROL CODE AB LARGE CEILING BLANK 38
13. 4 3 va CENTRAL REMOTE CONTROLLER crock ADJUST Ej ER TIME Ej ER TIMER DAYO OFF TIMER SET MASTER CONTROL ort TEMP ANTI colon FREEZE On D EI ZONE Remote control group operation settings are performed in the control mode The following procedure for the setting is the same for any of the control modes Individual mode Group control mode All control grop ALL GROUP 1 Push to select control mode from among Individual control mode Group control mode All control SELECT 2 When Individual control mode is selected use to select the desir ed central control number then go to 3 When Group control mode is selected use to selectthe desired group number then go to 3 When All control mode is selected go directly to 3 3 Press TEST and TEST will light up The operation setting is applied to the selected units SET 4 Press to send the signal and test run setting is sent to the indoor unit will flash as the signal is being transmitted 60 minutes test run starts To stop the test run do the same procedure as those for stop a normal operatin It is possible to change the settings for the operation mode heating cooling and fan setting 5 Once the signal has been transmitted the segm
14. AO 90MPCMF e MODEL 37H EZHL 4ojsiuuJ8uj jejur HUN ZZHL Jojsiuueuj dwa WOOY LZH L JOjsiuueu jopno 3 HUN 1 HUN 1 pam Jojsiujeuy dwa JoopINO CHL Jojsiujeu eBueuosiq aH L OT Jojsiuueu JeBueuoxe TL eunsseud YBIH dH ir yoUMs eJnsseJg uone nuinooe Jamod ir eunssaud e ppiW AN eunsseud YBIH dH Jeuieas 40sues eunsseJd LINN 8H LINN HOOQNI 8 LINN HOOQNI uojsuedx3 P eqn 9 69 LINN 8H V LINN HOOQNI ninoov HOlVHVd3S LINN YOOALNO 07 01 7 2 CHARACTERISTICS OF SENSORS 7 2 1 THERMISTOR Thermistor resistance values lt Indoor unit side gt 1 Room temperature thermistor THoa THi4 Room tempera 0 25 5 75 10 125 15 175 20 22 5 25 27 5 30 ture 33 6 29 5 25 9 228 202 179 158 141 125 112 100 90 8 0 Room tempera 325 35 375 40 425 45 475 50 ture Resistance value 75 65 59 53 48 43 39 36 kQ 2 Indoor heat exchanger temperature thermistor THuw Heat exchanger 9
15. Fig 4 1 Pressure gauge changed Charge hose Fig 4 2 Changed to HFC resistant material Refrigerant cylinder Fig 4 3 Confirm the refrigerant type before charging Always charge liquid phase refrigerant Electronic balance for refrigerant charging Fig 4 4 Electronic balance is recommended as in the case of R410A Vacuum pump with adapter to prevent reverse flow Fig 4 5 Conventional pump can be used Vacuum holder Fig 4 6 Conventional pump can be used if adapter for preventing vacuum pump oil from flowing back is used Gas leakage tester Fig 4 7 Exclusive for HFC Refrigerant cleaner Fig 4 8 Brown paint as designated by the ARI USA Flare Fig 4 9 Conventional tool can be used Torque wrench Fig 4 10 Conventional wrench can be used Refrigerant recovering equipment Collector Fig 4 11 The type which can be used for any refrigerant is available Nitrogen cylinder Fig 4 12 This prevents an oxide film from forming in the pipe silver alloy brazing work by turning the air out of the pipe and preventing the inside combustion Safety charger Fig 4 13 It is always compulsory to change the liquid because R407C is a mixed r
16. 3 Check power supply for indoor unit 05 31 CODE ERROR CONTENTS ERROR CAUSE COUNTERMEASURE Transmission 3 Clearance 4 Transmission adapter 4 Check insertion of the communication error For 2 1 the communication printed circuit printed circuit board of transmission communication with indoor board Br indoor ani n adaptor and the communication PEN communication printed circuit P unit is restored board insertion is faulty printed circuit board of indoor unit For 2 2 the 5 Initialing setting after indoor 5 Perform initialization communication between unit address is changed is control printed circuit forgotten ee Se ee ee ee ee board and communication 6 Printed circuit board faulty 6 1 If communication error occurs after printed circuit board of parallel communication error occurs transmission adapter is replace printed circuit boards with performed the following procedure and make sure the operation D Replace Transmission adapter communication printed circuit board Replace Transmission adapter control printed circuit board 2 For other cases replace printed circuit boards with following procedure and make sure the operation Replace Indoor unit communication printed circuit board Replace Indoor unit control printed circuit board 21 Software 1 Error occurrence condition 1 Effect of extraneous noise 1 1 Check continuity err
17. MONITOR CENTRAL CONTROL of foo Error code displayed on central remote controller Indoor unit error Outdoor unit error Central remote controller 00 No error No error No error 01 02 Model information abnormal Model information error Printed circuit board error Control panel 03 Microcomputer communication error Microcomputer communication error Printed circuit board error Transmission adaptor 04 Power supply frequency abnormal Power supply frequency abnormal Memory error 05 Reverse phase blocker error Node setting error 06 EEPROM access error EEPROM access error Parallel communication error 07 EEPROM deletion error 08 09 Room temperature thermistor error Compressor 1 error Heat exchanger thermistor middle error Compressor 2 error 0B Heat exchanger thermistor inlet error Compressor 3 error 0 Heat exchanger thermistor outlet error OD Blower temperature thermistor error Discharge temperature thermistor 1 error 0 Discharge temperature thermistor 2 error OF Discharge temperature thermistor 3 error 10 Outdoor temperature thermistor error 11 Heat exchanger inlet thermistor 1 error 12 Room
18. 2 Check point of replacing pressure sensor 2 Lead wire Pressure sensor When installing the pressure sensor connect a lead wire to the D thereafter connect the other end of a lead wire to the pressure sensor 2 When disconnecting do the opposite procedure Be careful not to install other than above procedure otherwise the pressure sensor can be failed D Printed circuit board 7 2 3 ELECTRIC EXPANSION VALVE When the electric expansion valve is locked cause by failure it emits click noise Confirming the noise emission is done by touching any implement like a screw driver 7 2 4 RB UNIT When the RB unit is failed it can be concerned one of the valve such as discharge valve suction valve and bypass is locked The relation between open close status of each valve of RB unit and operating mode is shown in 4 3 1 07 04 7 2 5 OTHERS 1 9666 Solving the problem is nesessary since following be occured Gas leakage capacity declining cause by gas shortage Dirt from the filter and the EEV Capacity declining by mis setting of the indoor unit capacity Unfit of the refrigerant pipe Increasing the indoor unit by mis piping Increasing the indoor unit by mis setting the refrigerant system address Disconnection of the transmission line The air conditioner operates intermittently or an error message appears Wiring
19. S gi 214 a WHITE YELLOW 2 22 55 55 WHITE 515 66 616 RE 12215 2 315 lt lt L C 2 5 4 5 6 7 8 2 5 4 5 6 7 8 2 3 4 5 6 7 8 11314 CN101 WHITE 5 8108 wp 1111 RED 2 WH E 3 GREEN FAN MOTOR CAPACITOR ORANGE ES m 2 1104 6 ORANGE 5 ec LAT 5 c pem For Heat Recovery only amp Tz YELLON RE 215 LBLACKTz 731 BLACK RB RED 2215 eig MHI TERT WHITE UNIT 15 RED RED 417 111 GRAY e 21246 GRAY 107 WIOTWIOI 1 T2 L e c 1 2 112134 THERMAL FUSE 102 TERMINAL POWER SUPPLY 10 OUTDOOR UNIT INDOOR UNIT 07 15 WALL MOUNTED MODELS AS18 AS24 AS30
20. THERMISTOR ROOM TEMP We att 2 2 2 CN21 CN20 CN19 _ _ WHITE r1 RE gt EXPANSION WHITE BROWN 5 BROWN VALVE COIL BLUE BLUE ORANGE ORANGE YELLOW Fy YELLOM an __ WHITE BLUE MOTOR PURPLE H BROWN 77 BROWN RED RED FM 2 ORANGE 2 ORANGE 2 WHITE fe rofq YELLOW z BLACK _ 5 HELTE 5 n 5 GREEN YELLOW 5 PURPLE a STEPPING gps BROWN T RED He 5 Heat Recovery only ORANGE HS YELLOW py YELLOW YELLOW NL BLACK f BLACK RB WHITE S espere Toy WATE DRAIN PUMP OTOR YELLOW BLACK 1 se I 3 154 250Y YELLOW BLACK 2 215 Fuse on F101 FLOAT SWITCH 7 WHITE BLACK BLACK 64 i pe CREEN m CREEN 131 893 oe PRED H cN2 5 2 2131 Et zz 5 WHITE gejl gaz WHITE 22 BLACK WHITE TERMINAL REMOTE TRANS POWER THERMAL FUSE 102 om ssn S TO REMOTE lt CONTROL lt pus u TO OUTDOOR UNIT INDOOR UNIT SUPPLY 07 12 CASSETTE B MODELS AU20 AU25 AU30
21. WHITE Abr E WHITE NE FAN MOTOR wn nl CAPACITOR BLACK 1121112913 PONER TRANS REMOTE NE SUPPLY cour TERMINAL TO REMOTE LIE oum SUPPLY TO OUTDOOR UNIT gt INDOOR UNIT 07 10 HIGH STATIC PRESSURE DUCT MODELS AR36H AR45H AR60H EXPANSION VALVE COIL a2 5 HERMISTOR PIPE TEMP C3 E xj 5 lt S 215 346 m HERMISTOR OUTLET TEMP 42 8 Se ss us lt lt 2 2 THERMISTOR ROOM TEMP a gt 20 co 113 2 41516 2 712 2 2 For Heat Recovery only CN 15 4 CN 20 CN 21 CN 19 CN 5 7 fy YELOW o 128 40 3 BLACK pp WHITE WHITE 2 CONTROL BOARD 1 UNIT CN 17 CN 1 213 CN 26 2 6 W5 WIO W9 WB W7 TRANS Tov BOARD Use 3 15A 250V z Fuse F101 Zo 214
22. o 1 and CEILING WALL TYPE Press the HORIZONTAL AIR FLOW DIRECTION SET button Each time the button is pressed the air direction range will change as follows 222422020749 The remote controller s display does not change ENERGY SAVE OFF STARTISTOP OSET gt Example When set to horizontal air direction LARGE CEILING TYPE WALL MOUNTED TYPE CEILING WALL TYPE 2 SWING OPERATION Instructions relating to the indoor unit s indicator lamp are applicable to LARGE CEILING TYPE UNIVERSAL FLOOR CEILING TYPE CASSETTE TYPE WALL MOUNTED TYPE COMPACT WALL MOUNTED TYPE and CEILING WALL TYPE Begin air conditioner operation before performing this procedure To select Vertical airflow SWING Operation This instructions are applicable to LARGE CEILING TYPE UNIVERSAL FLOOR CEILING TYPE CASSETTE TYPE WALL MOUNTED TYPE COMPACT WALL MOUNTED and CEILING WALL Press the VERTICAL SWING button for more than two seconds TIMER serre The remote controller s VERTICAL SWING lamp orange and o 4 36 indoor unit s SWING indicator lamp VERTICAL SWING 204 will light up 2 gt SET OFF
23. Compressor 1 1 1 1 4 9mins i 1 min OFF 1 1 1 1 1 1 1 2 1 I ON I I 1 1 1 1 Compressor 3 Lil OFF I 1 Outdoor Fan ON 1124 Indoor Fan OFF 4 Others During the oil recovery operation appears on the display of wired and central remote controller and amp appears on the simple remote controller The operation indicators LED of the indoor units flash slowly 03 10 3 10 PROTECTION FUNCTIONS 1 Central discharge temperature protection 1 When the discharge temperature of any compressor reaches 110 C or higher solenoid valve 1 SV1 is turned on and bypass is performed SV1 is turned off and central discharge temperature protection operation is ended by any of the following conditions 1 Discharge temperature of all compressors reaches 95 C or lower 2 recovery operation starts 2 When solenoid valve 1 SV1 is on and the outdoor fan speed is 5 about fan speed please refer to 3 3 solenoid valve 2 SV2 is simultaneously turned on and bypass is performed SV2 is turned off by any of the following conditions 1 Outdoor fan speed is set to other than 5 2 recovery operation starts 3 Discharge temperature of all compressors reaches 95 C or lower 2 Discharge temperature protection When the discharge temperature of any compressor reaches 130 C or higher the corresponding compressor stops
24. An air flow direction by moving the flap angle horizontally It can prevent that a cold wind directly hits If air conditioning cooling operation is performed in long time and a humid place there is a possibility 02 14 that waterdrop may hang down from a blow off mouth EH ROTARY SWITCH SETTING 1 SW6 setting Indoor unit address switch Sets the indoor unit addresses INDOOR UNIT ADDRESS SWITCH Factory setting 0 Rotary SW Description Remarks Indoor unit Indoor unit address address SW 0 15 2 SW7 setting forbidden 3 SW8 9 setting Refrigerant circuit address switch 6 Sets the refrigerant circuit REFRIGERANT CIRCUIT ADDRESS SWITCH Factory setting SW 8 0 SW 9 0 Rotary SW Description Remarks 8 Refrigerant circuit Refrigerant circuit address 1 address the first digit Refrigerant circuit Refrigerant circuit address 2 address the second digit 4 5W10 setting Remote controller address switch When the indoor unit is wired by remote controller group to identity the indoor unit in the remote controller group the number remote controller address in the remote controller group is set Set the remote controller address in the 0 1 2 15 order Blank is not allowed REMOTE CONTROLLER ADDRESS SWITCH Factory setting 0 Rotary SW Description Remarks Remote controller Remote controller 10 address SW address B EXTERNAL INPUT AND OUTPUT Connector Indoor unit type Input Remarks
25. When the air conditioner is being test run the OPERATION and TIMER lamps of indoor unit flash slowly at the same time ws EZ START STOP button Beer 2 TEST RUN button Omen AE 5 u OSTART STOP 01 03 3 Simple remote controller Stop the indoor and outdoor units Push the remote button and button simultaneously for more than three seconds The air conditioner will start to conduct a test run and will display on the temperature display display However the CJ setting button does not have function but all other buttons displays and protection functions will operate To stop test running press the button of the simple remote controller For the operation method refer to the operating manual and perform operation check Check that there are no abnormal sounds or vibration sounds during test run operation 4 Central remote controller 2 CENTRAL CONTROL mmm ZONE OFF 2 UN MON TUE WED THU FRI SAT CLOCK lg nn C ls 8 8 3 OPERATION em ON ALL OFF 1 GSS eee tm wen MEMORY croup FILTER SETTING SETTING CHECK e TEST
26. 3 Clearance When 2 hours have elapsed after error occurrence Counting of 2 hour counter starts if error occurs on any compressors Error is cleared by turning power off Model information is not memorized or erased for some reason 1 Discharge temperature sensor is faulty 2 Compressor power relay 1 is faulty 3 Outdoor unit control printed circuit board is faulty Magnetic contactor 1 is faulty 6 After 2 and half an hours have elapsed since error is displayed error detection is performed again and error is not displayed 7 Compressor motor protector is operated 8 Compressor is faulty Replace outdoor unit control printed circuit board 1 Check if the wiring of discharge temperature sensor THo1 loosens or comes off And check the resistance of sensor If it s abnormal replace sensor 2 Check compressor power relay 1 If it s abnormal replace power relay 3 Check CN24 compressor 1 12V voltage output on outdoor unit control printed circuit board If it s abnormal replace printed circuit board Check magnetic contactor 1 If it s abnormal replace contactor 5 Check additional refrigerant amount and recharge suitable refrigerant 6 Temporary data transmission trouble due to Effect of extraneous noise etc Operation is not affected 7 Compressor overload operation Check High pressure error Motor protector is reset at 61 C 9 C 8 Check compre
27. CN13 JREMOCON 0 ICN14 FLOT 10 CNI5 NETWORK 1 1 0 O 10 O O 8 SH J O JON S JECASH 1 O J O 2 CNO 10 O 0 __ 2 10 0 EX QUR CL O J O on EXOU3 0 CN25 0 CN26 COMMUNICATION 1 L sWw1 JFUNCHON1 1 1 1 O _ 8 2 FUNCTION2 120 sw FUNCTION3 120 0 sw FUNCTION4 0 FUNCTIONS SW6_ INDOORUNITADDRESS1 O 0 sw FORBIDDEN SW8_ REFRIGERANTADDRESS1 O O O ISW9 REFRIGERANT ADDRESS O 0 SW10 REMOTE CONTROLLER ADDRESS O 02 09 INDOOR UNIT Compact Wall Mounted 14000 70 ____ POWERPWB O 20 CN3 E E VALVE 0 SP MOTOT U D DISPLAY ROOMTH CN7 v 8 Ol __ 0 J CN12_ COMMUNICATIOAPWB 0 CN101 J 02 MOTOR 0 03 4 __ 5 0 05 2 CN100 1 ICN107_ NETWORK CN108 COMMUNICATION 0 j W101 102_ POWERSUPPLY CO W103 104 FANCAPACITOR O j FUNCTION ____ SSW2 FUNCTION amp INDOOR U
28. disconnect CN1 indicate a value near zero Then check the individual electric parts to distinguish the parts which cause the leakage of electricity Error display Error display Normal Communication line is faulty When of 1 2 2 3 and 3 1 at display tween indoor unit and wired the indoor unit terminal board for Remote ae unit or remote controller or simple remore an vis Shoned controller error X no displa owever the resistances betwee communi Ray ellis red white or white and black cation system or and red not indicate error x a value near zero come normal after the power 5 reset Communication line between indoor units for remote controller group control is faulty Check the wiring color and the wiring connection of indoor unit The combinations of wiring color and indoor unit terminal board for terminal board for remote control remote controller as following Open circuit ler red to1 white to 2 and black to 3 Normal Normal Normal Communication line is faulty When any of 1 2 2 3 and 3 1 at display display display tween indoor unit and wired the indoor unit terminal board for or remote controller or simple remote controller are shorted no display remote controller however the resistances betwee Erroneous connection red and white or white and black n or black and red do not indicate polarity incorrect value near z
29. 05 15 CODE ERROR ERROR CONTENTS CAUSE COUNTERMEASURE 06 EEPROM access error 1 Error occurrence condition After outdoor unit operation is started EEPROM cannot be accessed because of disturbance or device error 2 Relevant operation Error is displayed on LED of outdoor unit Outdoor unit operation is not controlled 3 Clearance EEPROM can be accessed correctly EEPROM cannot be accessed because of disturbance device error etc 1 Remove noise sources near outdoor unit 2 Replace outdoor unit control printed circuit board 07 EEPROM deletion error 1 Error occurrence condition After outdoor unit operation is started error occurs in model information which is memorized in EEPROM 2 Relevant operation 1 All compressors are stopped 2 Error is displayed on LED of outdoor unit 3 Clearance Model information which is memorized in EEPROM is recovered 09 Compressor 1 error 1 Error occurrence condition After thirty minutes has elapsed since compressor 1 starts to work discharge temperature 1 does not reach to outdoor temperature plus 10 C 2 Relevant operation 1 After compressor error occurs compressor recovery operation is performed However if defrosting control or oil recovery operation is performed compressor recovery is not operated 2 Error is displayed on LED of outdoor unit and output to communication bus line
30. Du 1 00 02 04 05 06 o7 1 2 x100 LJ 1 APRY 200 0 J 00 ot 02 03 04 05 06 07 gt Current error code First previous error code Second previous error code 05 06 mote controller are displayed Each of the displays is shown below Indoor unit error display TUE WED THU FRI SAT ADDRESS The refrigerant system address and indoor unit address are displayed Outdoor unit error display 1 1 ADDRESS Central remote control error display SUN MON TUE WED THU FRI SAT i 2 ra ra ADDRESS L EI r Pa The C code and the central remote controller address are displayed 5 Press CHECK again to end the error monitor 05 07 If there have been multiple errors for one unit continually E pressing will display the error codes in sequence When all the error codes have been displayed the display will switch to the next unit If there is no error in the central control number selected in 3 the display will not change a Mi when is pressed 00 displayed means no errors
31. Heat recovery operation 1 2 3 4 05 22 CODE ERROR CONTENTS ERROR CAUSE COUNTERMEASURE 22 Discharge temperature 2 error 1 Error occurrence condition Discharge temperature 2 rises to 130 C or higher for 40 minutes and compressor 2 is stopped twice or more Relevant operation Error is displayed on LED of outdoor unit and output to communication bus line 3 Clearance When all the following conditions are satisfied 1 Discharge temperature protector 2 is reset 2 Discharge temperature protector is not operated for 40 minutes or longer 1 Gas leak or lack of refrigerant 2 Outdoor fan motor is faulty 3 Discharge temperature sensor THpzis faulty 4 Electronic expansion valve operation is faulty 5 Solenoid valve operation is faulty Check the gas leak and check additional refrigerant amount and recharge suitable refrigerant 2 Check outdoor fan motor operation Remove the obstruction in wind path If fan motor is faulty replace motor 3 Check if the wiring of discharge temperature sensor loosens or comes off and check the resistance of 2 If it s abnormal replace sensor Check operation and coil resistance of following electronic expansion valve If it s abnormal replace electronic expansion valve Coil resistance measurement points Red white red orange brown yellow brown blue 1 Outdoor
32. MOTOR WHITE ee CAPACITOR WHITE BLACK 5 112111213 25 POWER TRANS REMOTE ah bat MISSION control TERMINAL gt TO REMOTE SUPPLY gt TO OUTDOOR UNIT gt INDOOR UNIT 07 09 LOW STATIC PRESSURE DUCT B MODELS AR30 AR36 45 THERMISTORCOUTLET TEMP gt 7 THERMISTORCPIPE TEMP x THERMISTORCROOM TEMP N e gs 2 Us 2 RED FRED VALVE COIL FAN BLUE BLUE 2 xB mel TS wor DEI RED HHZ WHITE WHITE FL WHITE BLACKS BLACK 2 T U RD gt 215 od RED RED UNIT se 3 15A 250V CN15 LL F 113 WHITE BLACK BLUE j cm WHITE AE RED lt gt BLACK GREEN 0 g RED RED X des m 5 WHITE 4 WH TE ecco WHITE WHITE 10 2
33. Please refer to PC Controller s setting manual b In the case of Edge input CONNECTOR INPUT SIGNAL COMMAND OFF ON All ON ON OFF On CN9 1 Chi Off Indoor All ON Unit All OFF c In the case of Pulse input CONNECTOR INPUT SIGNAL COMMAND Ch1 OFF ON AION RED OFF ON All OFF The width of pulse must be longer than 300ms 9 Off Ch1 On CN9 Ch2 1 1 Indoor All ON Unit 02 32 2 Output 1 Operation display This output indicates the indoor unit s Operate or Stop status OUTPUT CONNECTOR SIGNAL STATUS Open All of indoor units OFF At least one more indoor units ON Indoor Unit CN1 Short Ch1 Open 1 Always insert a diode on both ends of relay coil 2 Pin 1 Pin 3 Max 15V 2 Error display Pin 2 Pin 3 70mA This output indicates the indoor unit s Normal or Error status CONNECTOR OUTPUT STATUS SIGNAL CN1 Ch2 Open All of indoor units Normal WHITE Short At least one more indoor units Error Indoor 579 Unit Normal CN1 sen Ch2 3 Parts Following cord service parts is required Please use the parts number shown below to order the cord from your sales representative Name and shapes d For input EXTERNAL output port INPUT 9368779009 WIRE 02 33 2 4 5 NETWORK CONVERTOR The connector positions and pin number of network convertor
34. gt CAPACITOR WHITE BLACK 5 M 2 1 2 1 2 5 PS POWER TRANS REMOTE SUPPLY CONTROL TERMINAL gt 10 REMOTE m LE qum supply TO OUTDOOR UNIT INDOOR UNIT 07 07 COMPACT DUCT B MODELS ARQ AR12 AR14 AR18 THERMISTORCOUTLET TEMP 7 THERMISTOR PIPE TEMP CANO THERMISTORCROON TEMP di AND m 20 SLs BRO BLUE FAN BLUE _ PURPL YELLOW PI lt e W 2 Heat Recovery only BL YELLON YELLON z S BACC RD WHITE 5 3 Pimp TUNIT Use 3 5 750 4 1 Fuse on F101 BLACK WHITE of Tre 80 we WHITE WHITE Xo pr LITE me acon WHITE 213 CEST ee WHITE ah WHITE mE Ni FAN MOTOR gt WHITE CAPACITOR BLACK 91112 2 3 gt POWER
35. invalidity External input select edge pulse Filter sign indication ON OFF F switch RC operation prohibit function validity invalidity Forbidden Forbidden SRAM battery ON OFF Forbidden Forbidden 2 3 4 5 6 7 8 1 2 3 4 Forbidden Forbidden Initial setting 02 05 2 1 6 NETWORK CONVERTORS CIRCUIT BOARD 1 NETWORK CONVERTOR UTR YSSA Network Convertor UTR YSSA Remote controller type Number of connected indoor units Forbidden Wired remote controller validity invalidity External input validity invalidity External input select edge pulse SENENBENEEBENE Auto changeover validity invalidity Setto OFF for duct type indoor unit Auto restart validity invalidity ROTARY SW Refrigerant circuit address 1 SWITCH POSITION SW107 SW108 SW109 SW103 Refrigerant circuit address 2 02 06 2 NETWORK CONVERTOR UTR YLLA Switch Switch No Type Contents SW1 Push switch Service Pin SW side SW2 Push switch Service Pin SW Lon works side SW3 Push switch Selection of setting mode SW4 Push switch Confirmation of setting SW5 Rotaly switch 0 15 Setting up the value at the each setting mode D25 D22 SW6 LED LED No Push switch Setting up the value at the each s
36. the gas pipe of the re levant indoor unit remains cold The temperatuer of air flow as well as inlet pipe of the electronic expansion valve of the relevant indoor unit is higher than those of other indoor units Electronic expansion valve opening of the relevant indoor unit is out of control open excessively when the indoor unit stop heating operation The temperatuer of inlet pipe of the electronic expansion valve do not become low When the electronic expansion valve is open excessively other indoor units may not operate at full capacity or a loud refrigerant rushing sound may be generated If the electronic expansion valve of the stopping indoor unit re mains open frost may form on the surface of the heat exchanger of the indoor unit Turn off the power source of PCB of the indoor unit to initialize the electronic expansion valves for several times Put a 3 minute in terval between each initializationg The electronic expansion valve may return to normal Turn off the power source of PCB of the indoor unit to initialize the electronic expansion valves for several times Put a 3 minute in terval between each initializations The electronic expansion valve may return to normal System does not cool heat Outdoor heat exchanger switching 4 way valves 4WV2 4WV3 4WV4 or solenoid valves SV7 SV8 are faulty Check the heat exchanger tion capacity at the LED on the outdoor contr
37. type wired remote controller Goto 8 directly when UTB is used 5 Press the TIMER MODE button The day display changes to the set temperature display 6 Press the MASTER CONTROL and the TEMP DAY button Select the desired operation mode and temperature 7 Press the TIMER MODE button End operation mode and temperature setting 8 Press the SET button This registers the first ON time setting for the selected day The ON time display stops flashing and the WEEKLY 1 OFF time starts flashing 9 Press the SET TIME button to set the day s first OFF time The earliest OFF time you can set is 5 minutes after the ON time The latest OFF time is 23 55 on the subsequent day 10 Press the SET button This registers the first OFF time for the day completing the WEEKLY 1 settings for that day The display switches to WEEKLY 2 and the day s second ON time begins flashing 11 Repeat the operations described in Steps 4 to 10 to set Mu NM o MA UE v WEEKLY TIMER WEEKLY _ Dn ov E EN Ed TIMER SET TIME TEMP DAY Fan TIMER ser _ FAN MASTER MODE CONTROL MODE CONTROL CONTROL 96 X iA CLOCK ADL 7
38. x 5 28 4 E 50 0 1 50415 P E o Q Q 1 lt gt S 4 5 E td 1 4 4 2 wi 5 GG CN 101 93 WHITE 8 2 5 WHITE L m lt a 3 zE FAN MOTOR BLUE GRAY 2 5 2 4 2 H d REMOTE TRANS POWER gt CONTROL MISSION SUPPLY as E 5 FAN MOTOR LX TERMINAL CAPACITOR E E TO REMOTE 70 OUTDOOR UNIT POWER CONTROL INDOOR UNIT SUPPLY 07 11 COMPACT CASSETTE MODELS 07 09 AU12 AU14 AU18 THERMISTORCOUTLET TEMP ANY THERMISTOR P IPE TEMP Te
39. 06 15 Necessary to handle carefully because of zeotropic Working pressure is nearly equal to that of R22 about 1 1 times 6 7 3 DEFFERENCE FROM CONVENTIONAL MODEL R22 AND PRECAUTIONS OIL Use new synthetic oils such as ester because HFC series refrigerant has less solubility with mineral oils conventionally used for R22 As these new synthetic oils are easily influenced by moisture and dusts they must be treated more care fully than the conventional lubricating oils CAUTION For installation servicing take more precautions than the case of conventional refrigerants to avoid moisture and dusts entering the refrigerant circuit Also for storing parts more precautions must be taken COMPRESSOR Use better grade of material for sliding parts for securing good lubrication of sliding part as HFC refrigerant does not contain chloride Review insulating materials Increase pressure resistance strength CAUTION Check if the compressor is suitable for the refrigerant type when replacing Complete welding within 15 minutes after opening the cap when replacing HEAT EXCHANGER Review the water contaminants controlling level Use thinner tube to increase pressure Increase capacity for resistance strength only outdoor unit improving performance CAUTION During storage due care must be taken so that foreign matters such as dust and water do not enter 4 WAY VALVE Review materials
40. 2 Turn off the power source of PCB of the indoor unit to initi alize the electronic expansion valve for several times Put a 3 minute interval between each initializations The elec tronic expansion valve may return to normal 1 Check the voltage 2 Disconnect the plug from PCB and check the coil resistance Coil resistance 1 200 1 500 Q Terminal yellow 2 black and RB unit solenoid valve SVs is faulty During cooling operation a voltage AC 220 240V is applied to indoor control CN6 in the cases of wall mounted and ceill ing wall type indoor units CN5 across terminals 1 4 but the gas pipe and airflow of indoor unit does not become cool Outdoor unit electronic expansion valves EEV1 EEV2 doesn t work applied to the coil of the heat Fully closed state Don t open When a voltage AC220V is exchange 4 way valves 4WV2 4WV3 4WV4 and to the heat exchanger solenoid valves SV7 SV8 corresponding to the electronic expansion valves the outlet pipes of electronic expan sion valves don t become cold in heating operation condition Turn off the power source of PCB of the outdoor unit to initialize the electronic expansion valves for several times Put a 3 minute in terval between each initializations The electronic expansion valve may return to normal Check the oil resistance red white red orenge brown blue brown yellow 170 2109 Outdoor unit electron
41. 4 Unit Normal Short CN109 WHITE Open 3 Parts Following cord service parts is required Please use the parts number shown below to order the cord from your sales representative For control EXTERNAL 1 Always insert a diode on both ends of relay coil 2 Pin 2 Pin 3 Max 15V 50mA input and output port INPUT 9368779009 WIRE 02 35 Refrigerant R407C AIRSTAGE 3 OUTDOOR UNIT OPERATION CONTROL 3 OUTDOOR UNIT OPERATION CONTROL 3 1 COMPRESSOR OPERATION CONTROL 3 1 1 OPERATION STOP CONDITION Compressor operation condition When cooling requirement capacity or heating requirement capacity from either of the indoor units in the same refrigerant system is input the compressor operates But in the following case the compressor operates in accordance with operation of each mode During 3 minute restart prevention operation During compressor recovery operation e During deicing operation Failure except for part Defrosting Oil recovery Under expansion valve initialization At protective operation Central discharge temperature protection High pressure protection Compressor stop condition When all the indoor units in no cooling requirement capacity or heating requirement capacity all the compressors are stopped But in the following case the compressor operates in accordance with operation of each mode Defrosting Oil re
42. 8 If the timer is not set press the SET button with the time display blank and perform next operation the second ON and OFF times for the day the WEEKLY 2 times When you press the SET button after setting the WEEKLY 2 OFF time the system registers the WEEKLY 2 settings for the day and returns you to the WEEKLY 1 ON time setup process The first ON setting reappears and begins flashing You can review your settings by pressing the SET button Each press moves you to the next setting as follows 04 02 gt WEEKLY 1 WEEKLY 1 WEEKLY 2 WEEKLY 2 ON OFF ON OFF 12 Press the SET TEMP DAY button to select another day for setup The repeat steps 4 to 10 above to set the ON and OFF times for that day 13 When you have finished setting all of the times hold down the SET button for 3 seconds The WEEKLY display flashes for 3 seconds while the new WEEKLY TIMER settings are registered and then the clock display reappears NOTES 1 If no time values are flashing the clock display will automatically reappear after 15 seconds if no buttons are pressed 2 A flashing time value indicates that the system is in time setting mode To return to the clock display you must hold down the SET button for 3 seconds 3 You do not need to set values for both WEEKLY 1 and WEEKLY 2 If you wish you can set values only for WEEKLY 1 or
43. Heat exchange outlet thermistor 1 error Heat exchange outlet thermistor 2 error Heat exchange outlet thermistor 3 error Heat exchange inlet thermistor 1 error Heat exchange inlet thermistor 2 error Heat exchange inlet thermistor 3 error Suction thermistor error Outdoor thermistor error Discharge pressure sensor error Liquid pressure sensor error Oil recovery error Reverse phase blocker error Reverse phase blocker error Power supply frequency abnormal Model information error EEPROM access error EEPROM deletion error Outdoor unit circuit bord error 1 Outdoor unit circuit bord error 2 Outdoor unit circuit bord error 2 Transmission error Node setting error Indoor unit error 0 1 sec ON 0 1 sec OFF flashing Display method 0 3 sec 0 3 sec OFF flashing Flashing times Error display i 0 1sec ON 0 1 sec LED 1 ON OFF repeated OFF __ 0 15 2 0 3sec 0 3 _ ON LED 2 6 OFF 05 04 5 3 REMOTE CONTROLLER 5 3 1 WIRED REMOTE CONTROLLER Error Code NON STOP CLOCK PCM EEEE gol wm 264 TIMER SET TIME FAN TIMER F
44. Operation display Indoor Operation unit Stop Operation Indicator CN11 12V fo OV 3 Parts Following cord service parts is required Please use the parts number shown below to order the cord from your sales representative Name and Parts No For output port 2 9368778002 control EXTERNAL 02 30 2 4 3 OUTDOOR UNIT 1 Output Error display This output indicates the outdoor unit and connected indoor unit s Normal or Error status CN 48 BLACK OUTPUT VOLTAGE STATUS Error OV Normal Normal CN48 Error 12 ov 2 Base heater output Turn ON when the ambient temperature is low in heating mode 2 or less Base heater Field supply AC220 240V 35W CN 5 GREEN 2 Parts Following cord service parts is required Please use the parts number shown below to order the cord from your sales representative Name and shapes For base heater BASE HEATER 1 9368776008 output port WIRE For error display RESP 1 9368777005 output port WIRE 02 31 2 4 4 CENTRAL REMOTE CONTROLLER CONTROLLER 1 Input 1 Control input All on All off Indoor units which stored into Central R C or PC controller can be operated or stopped by this input a Input select e Central remote controller DipSW2 1 DipSW2 2 Input select ON OFF Edge ON ON Pulse PC controller Input select can be set in environmental set up
45. RED OFF ON Operation or CN27 OFF ON Stop The width of pulse must be longer than 200ms Off 2177 J on CN27 72 Ch2 Off Operation Indoor Unit Stop 02 28 2 Output CONNECTOR OUT VOLTAGE STATUS 12V Operation CN22 OV Stop Error Normal Fan run Fan stop Operation display Indoor Operation unit Stop Operation Indicator CN 22 12V fo OV Error display Indoor Error NEN ant Normal Error Indicator CN 23 12V OV Inter locking output with indoor unit fan Indoor Fan run mE unit Indoor unit Fan stop fan status Indicator CN 24 12V ___ OV EX Used for inter lock energize for exhaust fan 3 Parts Following cord service parts is required Please use the parts number shown below to order the cord from your sales representative Name and Qty Parts No For control EXTERNAL 02 29 2 4 2 INDOOR UNIT COMPACT WALL MOUNTED 1 Control input Operation Stop Indoor unit can be operated or stopped by using the connector CN10 RED ON indoor unit PCB CONNECTOR INPUT SIGNAL COMMAND NOTE 1 The last command has priority on 2 The wire connection shall be ontroller separate from the power cable line Operation Indoor Unit 2 Output CONNECTOR VOLTAGE STATUS CN11 12V Operation WHITE OV Stop
46. TRANS REMOTE SUPPLY wisst conTROL TERMINAL T0 REMOTE e LECCE Lo E SUPPLY TO OUTDOOR WNI INDOOR UNIT 07 08 LOW STATIC PRESSURE DUCT MODELS 25 THERMISTORCOUTLET TEMP AND THERMISTORCPIPE TEMP END THERMISTORCROOM TEMP TET 7 5 lt c Rown EXPANSION a 2 7 RED ERED VALVE COIL FAN BLUE 7 BLUE c 13 alle un an 2 m 2 5 5 3 5 4 REDA RED fe WHITE WHITE WHITE BLACK 5 BLACK 2 For Heat Recovery only YELLON YELLOW GREEN YELLOM a m RR 25 S WHITE IS WHITE NI Use T 3 154 250V CN15 5 JUN Fuse on F101 BLACK WHITE 7 ed of WHITE 7 LGREEN GREEN WHITE mE jJ RED Jef o2 ic 5 WHITE WHITE 1557 213 ane
47. To switch off timed operation for day 2 Tuesday NOTES 1 The DAY OFF setting is only available for days for which weekly time settings already exist 2 You can make this setting for any of the next seven days counting from the current day 3 The DAY OFF setting is effective over the range illustrated below The weekly setting for which an ON time has been set is eligible for the day in which the DAY OFF has been set Effective range of DAY OFF setting ON OFF ON OFF WEEKLY setting for preceding WEEKLY setting day Preceding day 39 0 00 DAY OFF day 0 00 lt Next day 4 The display on the clock s lower line will usually be for the DAY OFF set day during weekly operations CLOCK 1 35 TIMER w 3 COOL WEEKLY E DAY OFF 5 Precautions during setup Setup is not possible in the following cases so amend the time f you set an ON time while leaving the OFF time setting blank Nothing will happen when you press the SET button To proceed press the SET TIME button and enter an appropriate setting When an attempt is made to set only the OFF time Nothing will happen when you press the SET TIME button Press the SET button and amend the entry for the ON time ON and OFF times cannot be set to the same value The OFF time cannot be set earlier than the ON time The WEEKLY 2 settings cannot be
48. circuit board 32 Outdoor unit Error occurs on outdoor unit Outdoor unit is faulty See Outdoor unit troubleshooting error in same refrigerant system 05 14 B OUTDOOR UNIT TROUBLESHOOTING ERROR CODE ERROR ERROR CONTENTS CAUSE COUNTERMEASURE 00 No errors 02 Model information error 1 Error occurrence condition When power is turned on error occurs in model information which is memorized in EEPROM 2 Relevant operation 1 All compressors are stopped not started 2 Error is displayed on LED of outdoor unit and output to communication bus line Clearance Model information which is memorized in EEPROM is recovered Model information is not memorized or erased because of some reason Replace outdoor unit control printed circuit board 03 Circuit board error Error occurrence condition Communication between two microcomputers on outdoor unit control printed circuit board is not performed normally 2 Relevant operation 1 All compressors is stopped not started 2 Error is displayed on LED of outdoor unit and output to communication bus line Clearance Communication between microcomputers is recovered 1 Effect of extraneous noise 2 Outdoor unit control printed circuit board is faulty 1 When power is turned OFF and turned ON again 1 If error doesn t occur printed circuit board is normal Then remove noise
49. er and then proceed as follows 1 Press the TIMER MODE button so that WEEKLY appears on the display 2 Press the TEMP DAY button to select the day To stop weekly timer while leaving the air conditioner running Press the TIMER MODE button to select NONSTOP OFF TIMER or ON TIMER To stop weekly timer operation and the air conditioner that you want check alee 3 Press the SET TIME button or w to switch Press the START STOP button between the WEEKLY 1 or WEEKLY 2 time dis plays 04 03 About the DAY OFF setting Use the DAY OFF setting to switch off timed operation for a selected day in the coming week This is a temporary one time setting The DAY OFF setting is automatically cleared as soon as the specified day passes Using the DAY OFF Setting Press the START STOP button to stop the air conditioner and then proceed as follows CLOCK 3 A 2 1 Carry out steps 1 to 2 of the Setting Up the Weekly 22807 Timer Operation procedure to select the day that you want to set as the DAY OFF MODE a 2 Press the DAY OFF button The DAY OFF setting is registered and the DAY OFF caption 6 5 6 appears on the display Se To cancel the DAY OFF setting You can cancel the setting by pressing the DAY OFF button again Example
50. n 15 am I IL1 ON TIMER zZ MM gt pg aN DAY EN TIMER MODE CLOCK ADJUST SET TIME TEMPJDAY m MASTER CONTROL o gt ENERGY SAVE DAY OFF o ISTART STOP 4 wm 1 wm 1 Time 2 If the change would cause a temporary overlap between the first and second ON OFF time spans ON OFF WEEKLY 1 ON Change VLA WEEKLY 2 Temporary overlap OFF Time Time 04 05 4 2 CONTROL 4 2 1 AUTO POSITION Fan speed zone 1 COOLING OPERATION The fan speed is determined automatically in accordance Hi Zone with the condition Tr corrected room temperature Ts TeTsz 2 C corrected set temperature as shown on the right However the fan speed zone is determined in the manner TC TRTs 2 C Med zone 5 2 3 C 2 C lt Tr Ts lt 3 C as the room temperature increases for the following cases TR Ts lt 2 C 1 When the Ts is changed Tr Ts lt 1 C 2 When the operation mode is changed from other mode to COOL When the room When the room 3 When the fan control is changed from other position to AUTO temperature decreases temperature increases 2 HEATING OPERATION 1 When the indoor heat exchanger temperature reaches 4
51. ply terminal board of outdoor unit and 380 415V Communi Communi Circuit breaker is at OFF position Voltages between R N S N cation error cation error Power line is faulty and T N are 220 240V X Become normal after the power 5 reset Outdoor unit is short circuiting The circuit to which voltage is applied when operation is short circuiting leakage of electricity The breaker falls immediately after turning on the breaker of the outdoor units The resistance between the power terminal block and the metal parts of outdoor units is almost zero When short circuit occurred the resistances between power sup ply terminals R S S T T R R N S N T N of outdoor unit approach to zero Outdoor unit is short circuiting The circuit to which voltage is applied when operation is short circuiting leakage of electricity The outdoor unit circuit breaker trips during operation The resistance value of the outdoor unit electric parts and outdoor unit metal part approaches zero If short circuited there is a elec tric part whose resistance between two electrodes will indicate a value near zero Normal display Norma Idisplay Normal display Indoor unit refrigerant system address SW 8 9 setting is incorrect When the indoor units are operated one by one there is an indoor unit whose outdoor unit does not operate Set the address to the same refrigerant syst
52. red orange brown blue brown yellow 100 2000 The cooling ca Electronic expansion valve The area heat exchanger near When the electronic expansion pacities of in opening of the relevant indoor the air diffuser is cool even after valve is open excessively other door units unit is out of control open several minutes have elapsed units may not operate at except for the excessively during cooling since the relevant indoor unit was full capacity or a loud refrigerant relevant indoor operation stopped the gas pipe of the rushing sound may be generated unit are insuffi levant indoor unit remains cold cient Abnorm If the electronic expansion valve al sound is of the stopping indoor unit re rd from indoor mains open frost may form on unit the surface of the heat exchange Abnormal sound Electronic expansion valve of the indoor unit and water leak E age or other trouble may occur is heard from opening of the relevant indoor Tum otte pover source of PCB on ihe surfate y ti pping of the indoor unit to initialize the operae electronic expansion valves for lof the heat ex several times Put 3 minute changer of the relevant indoor terval between each initializations unit The electronic expansion valve may return to normal The heating ca Electronic expansion valve The temperatuer of air flow as Turn off the power source of PCB pacities ofin ope
53. sources near outdoor unit 2 If error occurs again remove noise sources and take measure with the following countermeasure No 2 2 Replace outdoor unit control printed circuit board 04 Power supply frequency abnormal Error occurrence condition Outdoor unit control printed circuit board detects frequency outside of rating 2 Relevant operation 1 All compressors are stopped not started 2 Error is displayed on LED of outdoor unit and output to communication bus line Clearance Outdoor unit control printed circuit board detects the specified frequency Power supply frequency is in the following range Lower than 45Hz or higher than 65 2 Check power supply frequency and apply the power whose frequency is within the specified frequency 05 Reverse phase blocker error Error occurrence condition Reverse phase prevention circuit detects the wrong phase of power supply or the correct power supply input is not detected 2 Relevant operation 1 All compressors are stopped 2 Error is displayed on LED of outdoor unit and output to communication bus line 3 Clearance Reverse phase prevention circuit doesn t detect reverse phase input 1 Reverse phase wiring 2 Reverse phase prevention circuit is faulty 1 Check power supply wiring 2 Check power supply wiring If there are no mistakes replace outdoor unit control printed circuit board
54. xc Remakes compare the result with the be conducted properly pressure gauge indication Refer to 7 2 2 to find the correl ation between pressure and and output voltage of the sensor 5 6 CASES SUCH AS THESE ARE NORMAL Operation not trouble From the stand point of control the following operations are incorporated for air conditioner operation and protection They do not indicate trouble Remote indication Red and green lamps flash alternately or simultaneously Red lamp flashes Indoor unit fan does not operate even through the RUN signal has entered Fan turns on off periodically Remote controller airflow indication flashes Heating operation is performed when stopped RUN signal is input but is not accepted Buzzer sounds Makes a sound even after operation stops Flowing liquid sound during Makes a sound while operating Squeaking sound Switching sound Indicates that the power came on normally when power was applied at power failure recovery Indication is cleared by RUN command When test run is performed the unit operates without regard to the temperature setting Stopped by remote controller stop or reset after 60 minutes maximum Operation is stopped and refrigerant is passed through the indoor unit to remove the outdoor unit frost defrosting operation or to recover the refrigerant oil oil recovery operation The indoor unit stops in about 5 10 minutes Th
55. 1 3 DIP SW1 3 setting forbidden SW 1 3 OFF 1 4 Remote controller switch 2 If it is used to set up Master Slave setting of wired remote control When 1 remote control is connected to 1 remote control group always set the Master OFF When 2 remote controls are connected to remote control group set one side to Master and the other side to Slave REMOTE CONTROLLER SWITCH 2 Factory setting SW1 4 Setting for Master Slave 1 5 DIP SW 1 5 and SW 1 6 setting forbidden 02 22 2 SW2 setting 2 1 Cooling only heat pump Switching cooling only heat pump COOLING ONLY HEAT PUMP SWITCH Factory setting SW2 1 Operation system Heat pump Heat recovery 2 2 Auto change over validity invalidity Selecting auto change over validity invalidity Never turn it on in the case of Heat pump type AUTO CHANGE OVER Factory setting SW2 2 Auto change over 2 3 Back ground Light validity simple remote controller only Selecting to use internal background light validity invalidity The background light can turn on during indoor unit operation Factory setting Background light Invalidity Validity Never turn it ON in the case of wired remote controller 2 4 Maintenance switch Used to indicate of the refrigerant system indoor unit address MAINTENANCE SWITCH 9 Factory setting Mode Normal mode Maintenance mode 2 5 DIP SW 2 5 setting forbidden SW 2 5 OF
56. 3 4 HEAT POSITION 1 When using the heating mode set the temperature to a value higher than the current room temperature otherwise the indoor unit will not start the heating operation 2 After the start of heating operation the fan of indoor unit will not rotate until the heater exchange is warmed up to blow out warm air 3 During defrosting the OPERATION indicator lamp flashes 3 sec ON 1 sec OFF and repeat The heating operation will be temporarily interrupted An example for HEATING TEMPERATURE CONTROL time chart Manual setting TR M ue NE Sem n mM a ay dc cerca aa Scc cs eM ie curte td te T ever aim ER ie eue oie ene Ts T3 Temperature Ts Ts T4 gt 3 2 7 lt 2 Refrigerant flow OFF Opening of 100 EEV 0 _ _ ON Indoor fan Lea V ER Ts Corrected setting temperature Ts T3 The thrshold temperature of start of refrigrant flow TR Corrected room temperature The thrshold temperature of stop of refrigrant flow Duration of cold air prevention 4 3 5 FAN POSITION 1 In this position the fan merely rotates to circulate air so the room temperature will not change 2 The fan will rotate at a fan speed set with the FAN CONTROL button 3 When only the FAN mode is being used setting the fan speed at AUTO is equi
57. A WHITE WHITE o S2 BLAC 5 5 WHITE TE CMO WHITE ZU EXPANSION 6 BLAC BLACK VALVE COIL FELLOW Ys BLAC BLACK ORANGE F7 EE j 9 n FLOAT SWITCH WHITE 1 ry TEL am My NEN 2 1 2 CRAY DRAIN PUMP L me mue lau 5 MOTOR ex SUPPLY MISSION o WHITE EM Lobo RED 5 POWER SUPPLY TO OUTDOOR WIT 5 INDOOR UNIT MOTOR 07 14 COMPACT WALL MOUNTED BMODELS AS7 AS9 AS12 AS14 BLACK n Cw CRAY THERMIST R ROOM TEMP GRAY THERMISTOR CW PIPE 515 BLUE This 44H 215 31 3 YE gt 212 0 1 RE 5 2 STEPPING MOTOR CN201 EXPANSION VALVE COIL Ts HE THEN 77 Ed WHITE 515 2 2 2 2 21 ITE 414 2313 BLUE 313 5 ORANGE
58. Also too much oil may introduce water inside refrigerant circuit because the synthetic oil is highly hygroscopic 3 Brazing work Brazing work must be carried out while blowing dry nitrogen gas through the pipes so that an oxidized layer does not form on the inner surface of the pipes Pressure hose Nitrogen gas Rubber stopper Example Inside state of welded pipe section Nitrogen Gas is used but not Nitrogen Gas is used sufficient Oxygen gas still exists Nitrogen Gas is not used inside the pipe 165 06 11 4 Tightness test 1 After completing all piping connection always carry out an air tight test to check and confirm that there is no gas leakage Charge the piping with nitrogen to within the sealing test pressure 2 94 MPa After 24 hours check that the pressure has not fallen Make sure to add the pressure to both gas pipe and liquid pipe Perform the leak test on all flared and brazed parts Note When the ambient temperature changes 5 deg the test pressure changes 0 05MPa 2 After tightness test please insulate the connecting portion apply the enough insulation to avoid any gap 5 Vacuum process 1 2 3 4 5 6 2 ro Do not purge the air with refrigerant but use a vacuum pump to remove air from the indoor units and connection pipes Remove the cap and connect the gauge manifold and the vacuum pump to the charging valve by the service hoses Vacuum the indoor unit and the conn
59. CES 5 V6 o v 1 zone 2 srannsrorl tvs 1 2 A OSET vv 0 SM 800 2 2808 2 m N DAY TIMER V DAY a 7 15 OFF 71 OFF SETTIME TEMP DAY TIMER SET TIME TEMP DAY MASTER MODE 4 CONTROL MODE A a conto CONTROL REN 90 contro 2 X u Y sew _ IK 4 o o Pas o wv ENERGY SAVE ZONE PENERGY save STARTISTOP OSET 2 ISTARTISTOP ODAY OFF 2 2 oa Lr 8 00 on ee COOL TIMER Em SET TIME FAN MASTER DE CONTROL CONTROL 9 CELA Y o o y 5 vs 7 0 6 6 d LILI edo ne ates TIMER SET TIME TEMP DAY FAN TIMER SET TIME FAN MASTER MODE CONTROL MASTER DE CONTROL CONTROL OREN 96 cono OREN 8 9 TI 6 ISTART STOP FN 5 2 3 6 o 5 ZONE anenarsave STARTSTOP SET sae d 12 2 o e ON TES
60. Compressor stop is reset and discharge temperature protection operation is ended by any of the following conditions 1 Discharge temperature of all compressors reaches 95 or lower 2 recovery operation starts However during oil recovery operation discharge temperature protection is not performed 3 High pressure protection 1 When the high pressure SW HP is turned off except during oil recovery operation or defrosting solenoid 1 SV1 and solenoid 2 SV2 are turned on and bypass is performed SV1 and SV2 are turned off by any of the following conditions 1 High pressure pressure SW turned on 2 recovery control starts 3 Defrosting control starts 2 When 1 minute has elapsed after SV1 and SV2 were turned on and the discharge pressure sensor detected value is 3 34MPa or higher compressors 1 2 and 3 are stopped SV1 and SV2 ON and compressors 1 2 and 3 stop are reset and high pressure protection operation is ended by any of the following conditions 1 High pressure SW turned on 2 recovery control starts 3 Defrosting control starts 4 Heating overload protection When the operating mode is Heating and the high pressure SW was turned off except during oil recovery or defrosting in the Heat mode the outdoor fan is stopped Outdoor fan stop is reset and heat overload protection operation is ended by any of the following conditions 1 High pressure SW turned on 2 recovery c
61. MODEL DESIGNATION onore len 07 20 Refrigerant R407C AIRSTAGE 1 TEST RUN 1 TEST RUN 1 1 CHECK ITEMS BEFORE TEST RUN Before test run check the following items 9 9 9 9 9 9 Qo Goooooooo OOOO AOOOOO OOOH 000600 RB unit 177 16 50Hz 220 240V unit OW O 3 4W 50Hz 380 415V F L 080088 Transmission line 1 50Hz 220 240V Central Wired remote controller remote controller Is the selection of the outdoor unit and the indoor units correct Check the number of connected indoor units total capacity of the indoor units Is the piping length correct Ex Maximum piping length 100m Is the diameter of the selected pipe correct Is the diameter selected separation kit correct Doesn t gas leak Have the vaccuum process done enough time Is the refrigerant flow correct Is the additional refrigerant charge amount correct Note the charge amount to control box cover the power supply cables connected Power supply for the indoor unit and outdoor unit is separated Is the spec for the power supply cable correct Is the RB unit cable connected Is the length of the transmission line under the limit Is the spec for the transmission cable correct non polar 2 core 0 75 1 25 Is the transmission cable connected to all units Is the remote controller cable connected to units 15
62. Rotary SW6 circuit address circuit address 163 610 Rotary SW9 8 Rotary SW9 8 Remote controller address Rotary SW10 e Remote controller 7 DSW1 1 OFF Remote controller switch1 DSW1 2 OFF OFF Number of indoor unit connection DSW1 4 OFF ON i Central remote controller Remote controller switch2 Central remote controller address 1 compact wall mounted type indoor unit refer to 6 2 2 X Instructions for setting up the address 1 The Refrigerant circuit address of the indoor and outdoor units can be set to optional numbers in the range of 0 to 99 2 The Indoor unit address can be set to optional numbers in the range of 0 to 15 3 Set the Remote controller address in the order of 0 1 2 15 Blank is impossible 4 The Central remote controller address can be set to optional numbers in the range of 0 to 15 06 05 D Refrigerant circuit address Outdoor unit Refrigerant circuit address Indoor unit Refrigerant circuit 1 Refrigerant circuit 2 EXER FEX 10007 Fe Dez zu 2042 Indoor unit PCB Address setting 0 99 Setting by rotary SW8 9 For compact wall mounted type indoor unit refer to 6 2 2 Outdoor unit PCB Address setting 0 99 Setting by rotary SW8 9 Indoor unit address
63. UNIT COMPACT WALL MOUNTED 0 39 53 OUTDOOR UNE ce E a eT E ER ak 2 3 4 WIRED SIMPLE REMOTE CONTROLLER 2 3 5 CENTRAL REMOTE 141400 tent 2 3 6 NETWORK 0400 2 4 EXTERNAL INPUT amp OUTPUT ettet tette tette tette tentis 2 4 1 INDOOR UNIT EXCEPT FOR COMPACT WALL MOUNTED 2 4 2 INDOOR UNIT COMPACT WALL MOUNTED ees Qu OUTDOOR UNITS 2 4 4 CENTRAL REMOTE CONTROLLER PC CONTROLLER 2 4 5 NETWORK 04000 3 OUTDOOR UNIT OPERATION CONTROL 3 1 COMPRESSOR OPERATION 4 240 0 00 3 1 1 OPERATION STOP CONDITION ettet 3 1 2 COMPRESSOR OUTPUT PATTERN ettet 3 1 3 3 MINUTES RESTART PREVENTION 3MIN ST 3 1 4 COMPRESSOR RECOVERY OPERATION 3 2 HEAT EXCHANGE CAPACITY 44 treten 3 3 OUTDOOR FAN MOTOR CONTROL eerte tette tette ttt tenetis 3 4 EXPANSION VALVES 1 AND 2 03 06 3 5 CIRCULATING SAVE AMOUNT 03 07 3 6 SOLENOID VALVE 2 0 0 11 03 07 3
64. Wall mounted Ceiling wall types CONTROL INPUT OPERATION STOP CN21 CN27 Other types See 2 4 1 OPERATION DISPLAY for details DC12V ERROR DISPLAY DC12V INDOOR UNIT FAN STATUS DISPLY DC12V CN22 All types 02 15 2 3 2 INDOOR UNIT COMPACT WALL MOUNTED TYPE EDIP SWITCH SETTING 1 SW1 setting Never change at the site 1 1 Fan speed setting switch The fan speed corresponding to each model is set with the switch 1 2 Model code setting switch The model code infomation corresponding to each model is provided with the switch 2 SW2 setting 2 1 Dip SW 2 1 2 2 setting forbidden Factory setting SW2 1 OFF SW2 2 OFF 2 2 Auto restart validity invalidity The auto restart function be comes validity by changing the switch position from OFF to ON AUTO RESTART SETTING 9 Factory setting Auto restart Invalidity Validity 2 3 DIP SW 2 4 setting forbidden Factory setting SW2 4 OFF 02 16 3 SW3 setting 3 1 Refrigrant circuit address switch By combined with Rotary SW5 the refrigerant circuit address 0 99 can be set Please see 6 2 ADDRESS SETTING for refrigerant address conversion table Factory setting Refrigerant circuit address Remarks About Rotary SW5 see next page 3 2 DIP SW 3 4 setting forbidden Factory setti
65. circuit Air flow out from an indoor display display display not cool heat unit is sucked directly into the or same indoor unit or into another Error display indoor unit Discharge temperature error No display Cannot be No display System does Indoor control PCB is faulty Symptom has many branches If the problem is caused by or specified or not cool heat depending on the error contents or connection wire the trouble is Error display Error display Abnormal and there is no effective check often sloved by a change of PCB sound method or connection wire Cannot be Cannot be is heard from specified specified indoor unit Cannotbe No display Cannotbe Systemdoes Outdoor control PCB is faulty Symptom has many branches __ If the problem is caused by PCB specified or specified not cool heat depending on the error contents connection wire the trouble is Error display Abnormal ee is no effective check often sloved by a change of PCB sound or connection wire Cannot be is heard from specified indoor unit 05 37 2 System does not cool or heat LED display Indoor Outdoor Remote Symptom that Check method i i Remarks unit unit controller tican occur other Cause Error state check method Body PCB LED than title LED 1106 LCD Error Nodisplay Error Power is not supplied to Check the voltage of power sup Voltages between R S S T display display outdoor unit
66. command type Select the external input command type Factory setting SW 108 2 External input command type OFF Edge ON Pulse 5 SW109 setting 5 1 Auto changeover validity invalidity Select auto changeover function validity invalidity Factory setting Auto changeover function Invalidity validity 5 2 Auto restart validity invalidity Select auto restart function validity invalidity setting Auto restart function Invalidity validity 02 27 2 4 EXTERNAL INPUT amp OUTPUT 2 4 1 INDOOR UNIT EXCEPT FOR COMPACT WALL MOUNTED TYPE 1 Control input Operation Stop Indoor unit can be operated or stopped by using indoor unit PCB CN 21 Wall mounted type ceiling wall type or CN27 other types D Input select Dip SW3 4 Input select 2 In the case of Edge input CONNECTOR INPUT SIGNAL COMMAND CN 21 RED 1 entor OFF ON Operation or CN 27 RED 2 1 For Wall mounted type Ceiling wall type 2 For other types Ch1 of On CN21 tor 1 1 CN27 2 SN RE 1 The last command has priority 2 The indoor units within the same Remote fon remote controller group operates Controller in the same mode 3 The wire connection shall be Operation Indoor l separate from the power cable line Unit CN21 RED or 3 In the case of pulse input CN21
67. control panel indoor or outdoor unit in If error occurs again remove noise the same refrigerant sources and take measure with the system or when not following countermeasure No 2 3 recognizing In Out at all 2 Other remote controller 2 Stop operation of other remote 2 Relevant operation Standard wired remote controller and initialize again Error display Central controller wireless remote remote controller operation controller Central remote can be performed controller is operated _ _ _ _ _ _ 3 Clearance 3 Printed circuit board is faulty 3 Check the power supply wiring Initialization is performed address set up of Indoor Outdoor again from key operation unit Replace Transmission adaptor communication printed circuit board Replace Transmission adaptor control printed circuit board 8 Replace Control panel printed circuit board Manual 1 Error occurrence condition 1 Effect of extraneous noise 1 Perform allocation again storing 2 Manual store 2 is not After manual storing 2 setting error performed normally 1 If error doesn t occur printed circuit 2 Relevant operation board is normal Then remove noise Error display Sources near control panel Central remote controller If error occurs again remove noise operation can be performed Sources and take measure with the 3 Clearance following countermeasure No 2 Storing automatic 2 Printed circuit board is 12 Replace printed circuit boar
68. displayed on LED of thermistor THp is faulty temperature thermistor THo If it s outdoor unit and output to abnormal replace thermistor communication bus line 3 Clearance Thermistor detection is other than short or open Detection is performed when Compressor continues to operate for 5 minutes or longer OE Discharge 1 Error occurrence condition 1 Connector contact is faulty 1 Check if the connector of discharge temperature Thermistor condition which temperature thermistor THp2 loosens thermistor 2 is short or open is detected or comes off error 2 Relevant 2222222222222 1 Compressor 2 is stopped 2 Discharge temperature Check the resistance of discharge 2 Error is displayed on LED of thermistor is faulty temperature thermistor If it s outdoor unit and output to abnormal replace thermistor communication bus line 3 Clearance Thermistor detection is other than short or open Detection is performed when Compressor continues to operate for 5 minutes or longer OF Discharge 1 Error occurrence condition 1 Connector contact is faulty 1 Check if the connector of discharge temperature Thermistor condition which temperature thermistor loosens thermistor 3 error is short or open is detected 2 Relevant operation 1 Compressor 3 is stopped 2 Error is displayed on LED of outdoor unit and output to communication bus line 3 Clearance Thermistor det
69. faulty 6 Replace standard wired remote controller printed circuit board or network convertor printed circuit board 05 33 ERROR CODE ERROR CONTENTS CAUSE COUNTERMEASURE 1 Transmission 1 Error occurrence condition 1 Effect of extraneous 1 1 After the SW104 button of network error with Transmission between convertor PCB is pressed for more indoor unit indoor units and network than five seconds or the power of convertor is not performed network convertor is reset normally 1 If error dosen t occur printed circuit 2 Relevant operation board is normal Please remove 1 Error code are displayed noise sources near network convertor All control items are not 2 If error occurs again remove noise available sources and take measure with 3 Clearance the following countermeasure Transmission between 1 2 After the power of indoor units indoor units and network is reset convertor become normal 1 If error dosen t occur printed circuit again board is normal Please remove noise sources near indoor units 2 If error occurs again remove noise sources and take measure with the following countermeasure 2 The remote controller line 2 Check the remote controller line to between network convertor find whether it has been disconnected and indoor units is not connected faultily wrong wiring connected or connection or not _is faulty _ _ _ _ Z 3 The power of indoor units 3 Check the pow
70. following item Indoor unit LED red amp green light flush at the same time slowly Louver operates to open Fan rotates Air flow comes Drain pump opration RC signal receive Outdoor unit Coresponds from indoor unit signal Compressor start to operates Fan rotates Measure the following item Indoor unit Air intake temp Air flow temp Outdoor unit Outdoor temp Discharge pipe temp Suction pipe temp High pressure Low pressure the operation about 10 minutes When there is no ploblem check the next indoor unit After every indoor unit is check by test run please do test run using all of the indoor units and check them 01 02 1 3 TEST METHOD Supply power to the crankcase heater for 12 hours prior to the start of operation if the outdoor temperature is lower than 20 c The following is the procedure for the test run operation 1 3 1 TEST RUN FROM OUTDOOR PC BOARD By setting DIP SW1 1 SW1 2 on control PC board of outdoor unit cooling test run or heating test run for all the indoor units in the same refrigerant system can be performed SW1 2 SW1 1 Operation Mode Select position of SW1 2 SW1 1 Normal Operation OFF ON or ON OFF OFF OFF Normal Operation OFF ON or ON OFF ON ON Heating Test OFF OFF ON OFF Cooling Test Run OFF OFF OFF ON 1 3 2 TEST RUN FROM REMOTE CONTROLLER 1 Standard wired remote controller UTB
71. generated Coil resistance 1200 15009 High pressure gas bypass When a voltage AC220 240V is When SV2 is faulty the high solenoid SV2 is faulty applied to CN8 the high pressure may rise and a high pressure gas bypass solenoid pressure error may be generated outlet pipe is not warm Coil resistance 1200 15009 Compressor Oil return solenoid SV3 When a voltage AC220 240V is When SV3 SV4 SV5 SV6 error SV4 SV5 SV6 is faulty applied to CN9 CN10 CN11 do not operate normally the oil Remakes and CN12 the outlet pipe of the not return to the compressor respective solenoid valve SV3 compressor trouble may SV4 SV5 SV6 does not occur become hot Coil resistance 1200 15009 High pressure High pressure switch is faulty There is a voltage difference When the pressure switch is is high across terminals 1 2 of CN42 faulty protection control will not gt Remakes even though the high pressure be performed even if the high exceeds 3 0MPa pressure rises and a high pressure error may be generated Error display Error display Error display The operation sensor LP Measure the pressure sensors When the pressure sensors are Outdoor Discharge Outdoor ofthe ourdoor faulty output voltage between terminals faulty compressor steps and unit error sensor error unit error unit is abnormal 2 and 3 of CN33 and CN34 and protection control will not
72. is abnormal and the compressor operates replace printed circuit boards with following procedures and check the operation D Replace Indoor unit communication printed circuit board 2 Replace Indoor unit control printed circuit board 2 If communication of all indoor units in same refrigerant system is abnormal and the compressor does not operate replace printed circuit boards with following procedures and check the operation D Replace Outdoor unit communication printed circuit board 2 Replace Outdoor unit control printed circuit board 3 Replace Indoor unit communication printed circuit board Replace Indoor unit control printed circuit board 20 Node setting 1 Error occurrence condition 1 Effect of extraneous noise 1 When power turned OFF and turned error Indoor unit communication printed circuit board is not initialized normally 2 Relevant operation Error is displayed on standard wired remote controller and displayed on LED of indoor unit 3 Clearance Indoor unit communication printed circuit board is initialized correctly 2 Printed circuit board is faulty ON again 1 If error doesn t occur printed circuit board is normal Then remove noise sources near indoor unit 2 If error occurs again remove noise sources and take measure with the following countermeasure No 2 3 2 Replace printed circuit boards with following procedures and check the operation D
73. is pressed or power board error Error occurs at control is turned on again Control panel panel printed circuit board 1 If error dosen t occur printed circuit and central remote controller board is normal Then remove cannot be operated noise sources near operation panel 2 If error occurs again remove noise 2 Relevant operation sources and take measure with Error display Only error code the following countermeasure No 2 display is operated 2 Conrol panel printed circuit 2 Replace operation panel printed Other operations are Sidi board is faulty circuit board ineffective 3 Clearance Error is cleared and central remote controller bcomes operable again 03 PC board error 1 Error occurence condition 1 Effect of extraneous noise 1 After reset key on transmission Transmission Error occurs at transmission adaptor control printed circuit board is adapter adaptor control printed pressed or power is turned on again circuit board and central 1 If error doesn t occur printed circuit remote controller cannot be board is normal Then remove operated noise sources near transmission adaptor 2 Relevant operation 2 If error occurs again remove noise Error display Only error Sources and take measure with code display operation can the following countermeasure No 2 be paformed Other operations are ineffective 2 EOS E 2 Transmission adaptor conrol 2 Replace transmission adaptor control 3 Cleara
74. measure with Error is cleared when the the following countermeasure Signal synchronization 2 Network convertor printed 2 between the network devices the network convertor printed is normally performed circuit board is faulty circuit board 06 Circuit board 1 Error occurence condition 1 Effect of extraneous noise 1 After the SW104 button of network error 2 Error occurs when the convertor PCB is pressed for more memorized information in than five seconds or the power of EEPROM is faulty or network convertor is reset when the intial setting of 1 If error doesn t occur printed circuit network convertor is not board is normal Please remove performed correctly noise sources near network convertor 2 Relevant operation 2 If error occurs again remove noise Error code is displayed sources and take measure with Other control methods the following countermeasure are still possible 2 Network convertor printed 2 Replace the network convertor printed 3 Clearance circuit board is faulty circuit board Error is cleared when the network convertor becomes operable again 18 Transmission 1 Error occurrence condition 1 Effect of extraneouse noise 1 After the SW104 button of network error with wired RC Transmission between standard wired remote controller and network convertor is not performed normally 2 Relevant operation 1 Error code are displayed Control fro
75. method of the transmission line Loose contact of the transmission line Mis selecting the transmission line Over the limit of the transmission line length Noise influences the transmission line In case of the specified indoor unit the indoor unit PCB is defected In case of all units or the specified unit the outdoor unit PCB is defected 07 05 7 3 WIRING DIAGRAM 7 3 1 INDOOR UNIT UNIVERSAL FLOOR CEILING TYPE BMODELS AB12 AB14 AB18 AB24 THERMISTORCOUTLET TEMP a GRAY THERMISTOR PIPE TEMP GRAY c 2 2 BLACK THERMISTOR ROOM TEMP SS le BLACK CN2 CN20 CN19 BROWN grown _ EXPANSI
76. more compressors are operating and the integrated time of 1 or more compressors operating state exceeds 15 minutes 2 All the compressors are stopped 03 09 3 9 OIL RECOVERY CONTROL 1 Purpose of the operation The amount of refrigerant machinery oil which has been transported to the indoor units and the connection pipe with the refrigerant will become large as the operation time of compressor increase It is necessary to recover the oil back into the outdoor unit for a certain time interval in order to prevent compressors from damaging due to lack of lubrication oil 2 About the oil recovery operation When oil recovery integrated time which is the integrated operating time of any compressor in operation reaches to the certain time the oil recovery operation starts The oil recovery integrated time to start the oil recovery is as follows The first time of oil recovery after the power is turned on 1 hour The second time and afterwards At intervals of 4 6 hours Please note that oil recovery integrated time is reset to zero at the end of defrosting operation The oil recovery operation can be performed by setting the forced oil recovery DIP SW2 4 from OFF to ON and keeping it at ON position for more than 10 seconds 3 The operation of compressors and fans The following time chart shows the behavior of compressors outdoor fan and indoor fan during oil recovery operation Oil recovery start Oil recovery end
77. network convertor is reset operate normally after the 1 If error doesn t occur printed circuit power of microcomputer board is normal Please remove is reset noise sources near network convertor 2 If error occurs again remove noise sources and take measure with the following countermeasure 2 Network convertor printed 2 Replace the network convertor printed circuit board is faulty circuit board 32 Indoor or 1 Error occurence condition 1 Indoor unit is faulty outdoor unit error Error occurs on indoor or outdoor units which are connected with network convertor Relevant operation Error code is displayed Other control methods are still possible 3 Clearance When the error of indoor or outdoor units which are connected with network convertor is cleared 1 See troubleshooting of relevant indoor unit 2 Outdoor units is faulty See troubleshooting of relevant outdoor unit 2 05 35 5 5 2 TROUBLE SHOOTING WITH ERROR CODE How to read the tables 1 Select the relevant item of errors from 1 to 5 below and decide the table to be used 2 Deduce Cause from LED display and Symptoms that can occur other than title 3 Check if the deduced Cause is correct by means of Check method and Remarks When there is no error code display at the indoor unit outdoor unit or central remote controller but there is one of the following operation errors check the cause in the followi
78. of cooling mode cooling main mode and oil recovery operation The fowllowing table shows the fan speed associated with outdoor temperature Fan speed switched according to outdoor temperature OUTDOOR TEMPERATURE THo NORMAL OPERATING MODE SILENT OPERATING MODE gt 30 C 4 5 b Fan speed of heating mode and heating main mode The fan 1 and fan 2 rotate in High High speed C Same capacity fan control When the operating mode of the outdoor unit is the same capacity mode the fan fan1 and fan2 are turned off When the operating mode of the outdoor unit is changed from the same capacity operating mode to another operating mode the fan operates in accordance with the new operating mode 03 05 3 4 EXPANSION VALVES 1 AND 2 CONTROL 1 Purpose of the control In order to balance the refrigerant flow rate of each heat exchanger and to adjust the refrigerant gas to an optimum state a feedback control of expansion valves 1 and 2 is performed by using operation date which is obtained with thermistors and pressure sensors 2 Operation flow chart of expansion valves Power source turned ON Initialization of expansion valves V Stand by Does any of the compressors start to operate Cil recovery or Defrosting Automatic control operation of expansion valves Expansion valves automatic controlled Is any of the compressors
79. only for WEEKLY 2 4 The allowable range for the day as time settings is shown below Cannot set 5 min Available range 5 min Cannot set ON OFF ON OFF Previous day s WEEKLY Next day s WEEKLY settings settings 1 0 00 0 00 5 If you set the OFF time to occur the day following the ON time the NEXT DAY caption appears on the display TIMER DAY WEEKLY Eg E U OFF K NEXT DAY le IN ENS Starting Weekly Timer Operation 1 Press the TIMER MODE button so that WEEKLY appears on the display CLOCK 4 35 nrc Ey COOL 2 Press the START STOP button to start operation MER This step is not necessary if the air conditioner is already rf x running p SET TIME TEMP DAY me 6 amp contro Weekly timer operation starts and the operation lamp comes on lt E If the current time is between the first or second ON and OFF 2 1 ze ee time settings for the current day the air conditioner will start in Otherwise the air conditioner will remain off 2 The day display is replaced by the temperature display The upper time display now shows the current time and the lower time display shows the next scheduled ON or OFF time To Stop Weekly Timer Operation Reviewing the Time Settings Press the START STOP button to stop the air condition
80. operating Watching Does any of the compressors start to operate Do expansion valves need to be initialized Yes The expansion valves are initialized at intervals of 4 hours about 03 06 3 5 CIRCULATING SAVE AMOUNT CONTROL 1 Expansion Valve 3 Control As there 15 a difference between 5 actual capacity operating capacity and required capacty from indoor units the difference in capacity is bypassed as a circulating save amonunt Operating capacity required capacity 2 Start condition When all the following conditions are satisfied 1 Compressor s is are operating except for the case that only compressor 1 2HP is operating 2 Operatring mode is Cooling or Heating 3 End condition When any of the following condition is satisfied 1 Only commpressor 1 2HP is operating 2 When the operating mode is switched to other than Cooling or Heating 3 6 SOLENOID VALVE 2 CONTROL The solenoid valve 2 is controlled according to the difference between operatiog capacity and required capacity during the same capacity operatration mode 03 07 3 7 DEFROSTING CONTROL 1 Purpose of operation By removing the frost that was formed on the surface of the outdoor unit heat eachanger the defrosting operation prevents a decline in heat transfer efficiency and realizes an efficient heating operation 2 About the defrosting operation 1 Starting conditio
81. pump control function Electrical Pulse controlled by expansion valve the temperature differ ence calculation and frost prevent fuction Stop pulse Pulse controlled by the Pulse controlled by temperature difference the temperature dif caculation and the ference calculation defrosting function ane TOS preveni function Stop pulse e UTF Y90A4A e UTF Y54A1A Indoor Indoor Indoor Indoor To indoor unit unit 1 unit 2 unit 3 unit4 oo 48 co SS os Oa Oa a 2 50 5 350 30 58 58 ac Za JO da Suction pipe Discharge pipe D I c Liquid pipe 5 5 8 Bg o 2 KO Strainer ci 9 Solenoid valve AN Capillary tube Schematics of the RB units 04 07 4 3 2 AUTO Auto changeover POSITION 1 When AUTO CHANGEOVER is selected the air conditioner selects the appropriate operating mode Cooling or Heating according to your room s present temperature 2 When AUTO CHANGEOVER is first selected the fan will operate at very low speed for about one minute while the unit determines the current conditions of the room and accordingly selects the proper operating mode 3 When the air conditioner has adjusted your room s temperature to near the set temperature it will begin monitor opera tion In the monitor operating mode the fa
82. temperature abnormal Heat exchanger inlet thermistor 2 error 13 Indoor unit fan error Heat exchanger inlet thermistor 3 error 14 Heat exchanger outlet thermistor 1 error 15 Heat exchanger outlet thermistor 2 error 16 Heat exchanger outlet thermistor 3 error 17 Suction thermistor error 18 Standard wired remote controller communication error 1 2 19 Discharge pressure sensor error 1A Liquid pressure sensor error 1 Suction pressure sensor error 1C Connection error 1D Initial setting error 1E Manual storing 2 error 1F Transmission error Transmission error Transmission error 20 21 Discharge temperature 1 error Software error Output 22 Discharge temperature 2 error Software error Input 23 Discharge temperature 3 error 24 High pressure error 25 Low pressure error 26 27 28 Pump down error 05 08 5 4 If there is a problem with the network convertor UTR YSSA an error code will appear D129 of print circuit board Error code displayed on network convertor Error code Error contents No error operation mode Initial setting Circuit board error 1 Circuit board error 2 Transmission error with wired RC Transmission error with indoor unit Transmission error with VRF system Software error Indoor or outdoor unit error 05 09 5 5 ERROR CODE amp T
83. unit electronic expansion valve EEV1 and EEV2 Coil resistance 192 19 ohms 2 Indoor units electronic expansion valve EEV Coil resistance 150 50 ohms 5 Check operation of following solenoid valves operation is faulty replace solenoid valve Cooling operation 1 Outdoor unit solenoid valve SV1 2 RB unit solenoid valves SVs Heating operation 3 Outdoor units solenoid valves SV1 SV7 and SV8 4 RB unit solenoid valve SVD Heat recovery operation 1 2 3 4 05 23 CODE ERROR CONTENTS ERROR CAUSE COUNTERMEASURE 23 Discharge temperature 3 error 1 Error occurrence condition Discharge temperature 3 rises 130 C or greater for 40 minutes and compressor 3 is stopped twice or more 2 Relevant operation Error is displayed on LED of outdoor unit and output to communication bus line 3 Clearance When all the following conditions are satisfied 1 Discharge temperature protector 3 is reset 2 Discharge temperature protector is not operated for 40 minutes or longer 1 Gas leak or lack of refrigerant 2 Outdoor fan motor is faulty 3 Discharge temperature sensor THpsis faulty 4 Electronic expansion valve operation is faulty 5 Solenoid valve operation is faulty Check the gas leak and check additional refrigerant amount and recharge suitable refrigerant 2 Check outdoor fan motor operation Remove the ob
84. 0 415V 50 2 KW T Standard F FREE A 2000 2002 MULTI F TYPE OR UNIVERSAL G 380 415V 50Hz 7 2 15 H High static B FLOOR CEILING 380 415V 50Hz 9 2 8 2002 AR DUCT 12 3 6 AU CASSETTE 14 4 05 18 5 3 AS WALL MOUNTED 20 57 AW CEILING WALL 24 6 8 25 7 05 30 8 8 36 10 5 45 12 7 54 14 1 60 17 0 REMARK This manual corresponds to the outdoor unit of heat recovery type Model AO 90MPCMF and the indoor units model with model change code of C 07 19 _ FUJITSU GENERAL LIMITED 1116 Suenaga Takatsu ku Kawasaki 213 8502 Japan Product specifications are subject to change without notice AIRSTAG is a worldwide trademark of FUJITSU GENERAL LIMITED Copyright 2003 Fujitsu General Limited All rights reserved Printed in Japan 2008 9
85. 1 ROTARY SW SW 9 Refrigerant circuit address switch 2 02 03 2 1 4 WIRED REMOTE CONTROLLER SIMPLE REMOTE CONTROLLER CIRCUIT BOARD Wired remote controller Simple remote controller DIP SW1 DIP SW2 DIP SW1 DIP SW2 Wired amp Simple remote controller Remote controller switch 1 Terminator SW 1 Indoor unit connection One multiple Forbidden Remote controller switch 2 Master Slave Forbidden Forbidden Cooling Heat pump Auto change over validity invalidity Back ground light validity invalidity Simple remote controller only Maintenance switch Forbidden Battery backup switch Wired remote controller only PROJ A OIN gt 02 04 2 1 5 CENTRAL REMOTE CONTROLLER CIRCUIT BOARD wr DIP SW3 N 2 7 TE cc ce LJ samga CL SW2 eles m mm sl uw 42 Central remote controller External input validity
86. 2 the specific gravity of its vapor Composition _ wt96 R32 R125 R134a 23 25 52 is larger than that of air and should it leak in an air tight room it may stay at a low level and cause oxy gen starvation accident Boiling point Ozone depletion potential ODP 43 6 If a fire is used in R407C existing area a poisonous gas will occur so be sure to handle it only in a well ventilated area Global warming potential GWP Nonflammable Inflammability A1 Nonflammable A1 A1 less SELECTION OF REFRIGERANT As there is no appropriate mono constituent refriger Toxicity Azeotropic or Zeotropic less Zeotropic ant to replace R22 which has been used for conven tional air conditioners the mixed refrigerant of HFC series was developed Features R407C Merits As working pressure is nearly equal to R22 about 1 1 times pressure resistance design is easy Discharge compressor Max 30 0 bar for reciprocating compressor Max 28 5 bar for rotary compressor Demerits Composition control is necessary for charging refrig erant as it is zeotropic refrigerant When leaked it will become composition of more R134a constituent with high boiling point Also charging refrigerant must be done from the liquid phase side Review of control system is required as there is temper ature glide 407 is used for large air conditioners Pressure resistance design is easy and safe
87. 2 5 5 75 10 125 15 175 20 225 25 27 5 30 temperature 176 0 153 5 134 2 117 6 103 3 91 0 80 3 71 0 62 9 55 9 497 44 3 39 6 Heat exchanger temperature 32 5 35 375 40 425 45 475 50 525 55 57 5 60 Resistance value 454 317 285 256 23 1 208 188 171 155 141 128 116 07 02 Thermistor resistance values lt Outdoor unit side gt 1 Outdoor heat exchanger outlet and inlet thermistor THHo1 THHo3 THHio1 Pipe tempera 50 30 20 75 50 25 25 50 75 10 ture C 2 384 8 182 8 92 3 49 2 275 240 20 9 18 3 16 1 14 1 12 4 11 0 97 Pipe tempera 125 15 0 475 20 225 25 0 275 30 325 35 375 40 50 ture 2 8 6 77 68 61 55 49 44 39 36 32 29 26 18 ture 60 70 80 90 100 Resistance value 12 0 9 06 05 04 2 Discharge temperature thermistor Pipe tempera ture C 40 30 20 10 0 50 10 125 15 175 20 225 25 o
88. 7 C or more the fan speed switches to the next higher position LOW gt MED MED gt HIGH 2 When the indoor heat exchanger temperature drops below 41 C while the refrigerant circulation of the indoor unit is ON the fan speed switches to the next lower position HIGH gt MED MED gt LOW 3 After switching the fan speed it does not switch again within 2 minutes 4 When CONTROL is switched from a set fan speed to AUTO after the cold air prevention is released the fan of indoor unit will start at MED speed for THE 41 C or at LOW speed for THE lt 41 C An example for heat operation 1 gt Indoor heat 47 temperature T C Indoor fan speed HI 2min 2min 2min mode MED gt lt 2min LOW lt gt OFF i 3 DRY OPERATION The indoor fan always rotates at Lo speed Expansion OPEN vave CLOSE EEM Indoor fan ON motor OFF TIME gt lt gt 5 S k 30s 2min 3 5 1 indoor fan starts operation 5 seconds after the electric expansion valve opens However when the indoor unit just starts its operation or the operation mode is changed from other to DRY and the refrigerant circulation is not stopped the fan will rotate immediately without a delay time of 5 seconds 2 The indoor fan will stop in 30 seco
89. 7 DEFROSTING CONTROL etie ceo 03 08 3 08 Oll RETURN CONTROL een ee 03 09 3 9 OIL RECOVERY CONTROL tere ee 03 10 3 10 PROTECTION FUNCTIONS 2 Ene eater cae 03 11 4 INDOOR UNIT OPERATION 1 TIMER CONTROL iate 04 01 4 2 FAN corse tue Re eee ee ee E 04 06 RTOs aa ed Ote d ee 04 06 4 2 2 LOW MED AND HIGH 200244122 04 06 4 3 MASTER CONTROL c Rm 04 07 4 3 1 OPERATION 2200 04 07 4 3 2 AUTOGHANGEOVER steel 04 08 453 3 COOL POSITION een een 04 09 4 3 4 HEAT POSITION 222222222 era a A aa 04 09 4 3 5 FAN POSITION ne ee 04 09 4 4 IEDUVER CONTROL 04 10 4 5 ENERGY SAVE 0000 04 13 4 6 ANTI FREEZE er ea tite epe 04 14 4 7 ELECTRONIC EXPANSION VALVE 04 15 4 8 AUTO RESTA RT 222 04 15 4 9 DRAIN FUMF OBERATION ae 04 15 5 TROUBLESHOOTING 3 1 INDOOR UNITE uio denter 05 01 5 1 1 NORMAL OPERATION BISPEAY 2 5 Pec eee e ete 05 01 5 1 2 ABNORMAL OPERATION
90. AN res MODE P CONTROL V re controller P CONTROL PF CONTROL address w CLOCK ADJUST ig O x o iW e lt gt ZONE ENERGY Save STARTISTOP v ENERGYSAVE START STOP OSET 4 OFF 2 2 If there is a problem with the air conditioner it will stop running and EE EE will be displayed instead of the clock 1 If the operation lamp is then press START STOP button to turn it off 2 Press the SET TIMER button and SET TEMP DAY button at the same time for more than three seconds to start the self diagnosis check An error code will be displayed in the clock display area 3 Press the SET TIMER button and SET TEMP DAY button again for more than three seconds to end the self diagnosis check Error code history can be displayed when UTB LB type wired remote controllers is used Please refer to Installation Instruction Sheet of the controller 5 3 2 SIMPLE REMOTE CONTROLLER Error Code Remote controller address If there is a problem with the air conditioner it will stop running and EE EE will be displayed 1 If the operation lamp is on then press button to turn it off 2 Press the and the buttons at the same time for more than three seconds to start
91. ARTISTOP i D SET ODAY Example When set to horizontal swing Air swing range Air flow direction set Range of swing to All range O to to to to All range Air direction range 4 5 ENERGY SAVE OPERATION 1 About the ENERGY SAVE The energy conservation mode ENERGY SAVE raises the set temperature slightly in the cooling mode and lowers the set temperature in the heating mode using a computer program to economically control the operation of the unit f you press the ENERGY SAVE button while the air conditioner is on it will change to the conservation mode if you press the ENERGY SAVE button while the unit is in the timer mode ON timer or WEEKLY timer the unit will go into the conservation mode when the unit starts with the timer f you turn off the air conditioner while in the conservation mode the mode will be shut off When Heating After the ENERGY SAVE button is pressed the set tempera ture will be lowered about 1 C every 30 minutes When it has lowered total of 4 C than it will hold that tempera ture 60 min 90 min Set to the ENERGY SAVE mode 2 To Use the ENERGY SAVE Press the ENERGY SAVE button The unit will run the ENERGY SAVE mode 3 To Stop the ENERGY SAVE Press the ENERGY SAVE button one more time The ENERGY SAVE mode will be turned off When Cooling A
92. CAUTION Check if the valve is suitable for the refrigerant type when replacing CHECK VALVE Review materials Change shape of pipe ends to increase pressure resistance strength CAUTION Check if the valve is suitable for the refrigerant type when replacing 2 3 WAY VALVE Review material O ring valve core seal for securing suitability with CAUTION Check if the valve is suitable for the refrigerant type when replacing 06 16 BALL VALVE Review material O ring valve core seal for securing suitability with oil CAUTION Check if the valve is suitable for the refrigerant model when replacing DRYER Change desiccant XH 6 XH 10 Volume of desiccant is increased CAUTION Complete welding within one hour after the package of dryer is opened PRESSURE SWITCH Adopt the models which can ensure higher reliability CAUTION Check if the pressure switch is suitable for the refrigerant type when replacing OTHER PIPING Review the water contaminants controlling level Review thickness of pipes CAUTION During storage due care must be taken so that foreign matters such as dust and water do not enter 06 17 Refrigerant R407C AIRSTAGE 7 APPENDING DATA 1 UNIT 7 APPENDING 1 UNIT lt 14 lt o gt o Lu n lt nc LLI nc Lu x NJ n gt gt nc gt nc lt
93. Control Input CN10 Operation Stop See 2 4 2 3 Press the MASTER CONTROL button again m Operation Display for details to end the code change DC12V 02 18 2 3 3 OUTDOOR UNIT e DIP SWITCH SETTING 1 SW1 setting 1 1 Test run By setting DIP SW1 1 and SW1 2 on control PC board of outdoor unit cooling test run or heating test run for all the indoor units in the same refrigerant system can be performed SELECTOR SWITCH FOR TEST RUN AND NORMAL OPERATION Factory setting OFF OFF OFF ON and be kept at Cooling test r n OFF ON position for more than 1 min OFF OFF ON OFF and be kept at test run OFF ON position for more than 1 min 1 2 Pump down operation Pump down operation is set with SW1 3 PUMP DOWN OPERATION setting m omm ON Operate OFF 0ON and be kept at ON position for more than 30 sec 1 3 Forced defrost operation FORCED DEFROST OPERATION Factory setting iin Fareed Om Ree ON Operate OFF ON and be kept at ON position for more than 10 sec 2 SW2 setting 2 1 Silent operation mode cooling mode only Noise level can be reduced using silent operation mode when the outdoor temperature decreases decreases below 30 C SILENT OPERATION MODE Factory setting Silent operation mode Release Oparate 2 2 Snow falling protection fan mode When snowing to prevent the unit f
94. DIRECTION and the HORIZONTAL AIR FLOW DIRECTION SET Button at the same time for more than three seconds once again This operation is only enabled with the remote controller set to stop mode 04 14 4 7 ELECTRONIC EXPANSION VALVE CONTROL After the power is turned on the following operation is controlled automatically to control the most suitable refrigerant charge according to the operation mode and operation conditions of each unit Electronic expansion valve control process The electronic expansion valve adjusts the opening by selecting the number of pulses from the rated capacity operation mode cool heat and set temperature of each indoor unit When the air conditioner restarts the THREE MINUTE DELAY FUNCTION operates 4 8 AUTO RESTART 1 The air conditioner restarts with the previous setting operation 2 When the air conditioner restarts the THREE MINUTE DELAY FUNCTION operates 3 When the air conditioner restarts for heating operation the COLD AIR DISCHARGE PREVENTION FUNCTION operates 4 9 DRAIN PUMP OPERATION 1 When cooling and refrigerant circulation starts the drain pump starts simultaneously 2 The drain pump operates continuously for 3 minutes after the refrigerant circulation stopped 3 When the refrigent circulation is stopped by a start of indoor heat exchanger frost provention operation the drain pump will turn off in 1 hour after the end of indoor heat exchanger frost provention operatio
95. F 2 6 Battery backup switch Wired remote controller only When installing turn the SW2 6 ON BATTERY BACKUP SWITCH Factory setting Battery backup Invalidity Validity Never turn it ON in the case of simple remote controller 02 23 2 3 5 CENTRAL REMOTE CONTROLLER 1 DIP SW2 SETTING 1 1 DIP SW2 1 setting For validity invalidity the external input function Factory setting SW 2 1 External input function OFF Invalidity 1 2 DIP SW2 2 setting Select the external input command function Factory setting SW 2 2 External input select Refer to 2 4 4 about external input amp output 1 3 DIP SW2 3 setting Filter check sign indication or not when filter check come from indoor unit Factory setting Filter check sign indication Non Display Display 1 4 DIP SW2 4 setting C switch Temperature display is centigrate C Fahrenheit F Factory setting 1 5 SW2 5 setting For validity invalidity the wired and wireless remote controller operation prohibit function Factory setting RC operation prohibit function Validity Invalidity 02 24 1 6 DIP SW2 6 2 7 setting forbidden 1 7 DIP SW2 8 setting SRAM Battery ON OFF When installing the control remote controller this switch must be set to ON factory setting OFF Factory set
96. J WIN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 06 03 6 2 2 ADDRESS SETTING FOR COMPACT WALL MOUNTED INDOOR UNIT KINDS OF ADDRESS AND SETTING RANGE SETTING SETTING RANGE TYPE OF SWITCH REMARKS DIP SW3 Rotary SW5 Refrigerant ud See refrigerant address circuit address conversion table below DIP SW 2 Rotary SW 4 TO Indoor unit ways set DIP SW 2 1 address At and 2 2 to OFF Setting example 3 Remote controller No such a switch A setup is impossible address e Refrigerant address conversion table Refrig Refrig Refrig Refrig erant erant erant DIP SW erant circuit circuit circuit circuit 3 1 3 2 5 0 5 06 04 6 2 3 EXAMPLES SYSTEM SETTING The following examples apply to all indoor units except for compact wall mounted type indoor unit Transmission line Non polar 2 core DSW1 1 OFF ON DSW1 1 Y DSW1 2 OFF OFF ON DSW1 2 OFF DSW1 4 OFF ON OFF DSW1 4 OFF 2 Remote controllers Ost o 6311 0 63 2 0 LLL 3 Indoor units DSW1 1 ON DSW1 2 ON DSW1 4 OFF E E E Central remote controller Max 16 Outdoor unit eIndoor unit 1 LL Refrigerant Refrigerant Indoor unit address
97. LA UTB x LB Stop the indoor and outdoor units Push the FAN CONTROL button and MASTER CONTROL button simultaneously for more than three seconds The air conditioner will start to conduct a test run and TEST will display on the remote controller display However the SET TEMP DAY setting button does not have function but all other buttons displays and protection functions will operate NONSTOP NONSTOP CLOCK 12 28 5 SET TIME f MASTER MODE A CONTROL TEMP DAY a o ZONE OSET SET TIME FAN amp mm Y m fe 272 i OG To stop test run push the START STOP button of the standard wired remote controller For the operation method refer to the operating manual and perform operation check Check that there are no abnormal sounds or vibration sounds during test run operation UTB SA UTB VA SLEEP 6 TIMER 2 Standard wireless remote controller re Press the test button of SA or short two pieces of metallic bodies in the test run frame of UTB VA while the air conditioner is running To stop test run operation push START STOP button of the wireless remote controller
98. Last Lx ze SEE S um c5 5 L m EUN MEN TO REMOTE CONTROL m TERMINALI 9 3 4 POWER L 10 001000 UNIT SUPPLY lt L gt 07 17 7 3 2 OUTDOOR UNIT m MODEL AO 90MPCMF HEAT RECOVERY COMMUNICATION BOARD GINE Ieo o zo POWER RELAY 3 COMPRESSOR 3 leo HEIN POWER RELAY 2 N24 COMPRESSOR 2 COMPRESSOR 1 CONDOR TP BLAK 015 1 DIS DIS RMINATOR STASI HEIST 007 RIC ON VE COIL CASES T eS ES HOT THERMISTOR 1 BLACK nd 2 YELLOW BROWN yp N PINK THERWISTOR 2 ONE 80 0m NI N25 N27 N22 21 211 1 N35 NAB CD 60 gt FUSE FI T 6 304 250V ND S HAEN NI I HSI SHRTISHRTI SEHR Te HEINIFHET Pia FAN ue 1 COIL NJ SOLENOID COIL AW 2 CAPACITOR ZJONI HAGIN tj
99. NG TEMPERATURE CORRECTION Factory setting Coefficient value 0 deg 2 deg 2 2 Dip SW 2 2 setting forbidden Factory setting 2 3 Filter check validity invalidity Filter check is set with Dip SW 2 3 FILTER CLEANING FUNCTION Factory setting SW2 3 Filter check 2 4 Auto restart validity invalidity Control the auto restart function by turning this switch ON OFF AUTO RESTART SETTING 9 Factory setting Auto restart Invalidity Validity 02 12 3 SW3 setting Never change at the site 3 1 Indoor unit fan speed switch This switch can select fan speed corresponding to each model Large ceiling type Cassette type x Wall mounted type Ceiling wall type x Other model Default 3 2 DIP SW 3 4 setting This switch is used to select the format of external input command as shown in the table below Factory setting External input select Edge Pulse 02 13 4 SW4 setting Never change at the site Indoor unit model code This switch for changing the model code information of indoor unit PCB Capacity INDOOR UNIT MODEL CODE Type 60 54 45 36 30 25 24 20 18 14 12 9 7 SW4 1 ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF SW4 2 ON ON OFF OFF ON ON OFF OFF
100. NIT ADDRESS 0 ____ ISW3 REFRIGERANT CIRCUIT ADDRESS 5 4 ADDRESS 0 j SW5_ REFRIGERANT CIRCUITADDRESS OO ____ JM1 WIRELESS REMOTE CONTROLLER CUSTOM ___ ______ JM2 JWIRELESS REMOTE CONTROLLER CUSTOM __ ______ 02 10 2 2 2 OUTDOOR UNIT OUTDOOR UNIT TYPE AO 90MPCMF AC IN NET FAN 1 FAN 2 BASE HEATER CRANK CASE HEATER S V 1 S V 2 S V 6 S V 7 S V 8 4WV 2 4WV 3 4WV A TERMINATOR COMP 1 COMP 2 COMP 3 TH 1 FLASH WIR E E V 1 E E V 2 E E V 3 P SEN M P SEN H TEST P SW H FLASH W R TH 2 EXT OUTPUT COMMUNICATION PWB FUNCTION 1 FUNCTION 2 FUNCTION 3 FUNCTION 4 FUNCTION 5 FUNCTION 6 FUNCTION 7 REFRIGERANT ADDRESS 1 REFRIGERANT ADDRESS 2 O 010 010 02 09 2 3 FUNCTION AND SETTING OF EACH SWITCH 2 3 1 INDOOR UNIT BDIP SWITCH SETTING 1 SW1 setting 1 1 DIP SW 1 1 and SW 1 2 setting forbidden Factory setting 1 2 Room temperature correct coefficient of heating Decide the heating temperature correct coefficient value of heating HEATING TEMPERATURE CORRECTION Factory setting SW1 3 SW1 4 Coefficient value 2 SW2 setting 2 1 Room temperature correct coefficient of cooling Decide the cooling temperature correct coefficient value of cooling COOLI
101. ON FAN BLUE 712 RED VALVE COIL 1 1 2 5 gt PURPLE 5 BLUE 1 BLUE 5 18 E econ 3 PM SITE 2 WHITE 5 WHITE 4 BLACK 5 GREEN YELLOW Z lt 2 2 STEPPING MOTOR LEFT RIGHT BROWN 2 ORANGE zm e li BROWN 11 BROWN c 1 1 1 2 YELLOW 1 13 E 5 WHITE 5 e 3 ORANGE 3 ORANGE 3 or YELLOW FH YELLOW STEPPING MOTOR Spe WHITE WHITE ey X UP DOWN 7 BROWN f x Org BLUE __ BLUE 16 RED ae F PURPLE PURPLE 65 d 5 CRAY __ GRAY FELLOW 55 5 te For Heat Recovery only Use T 3 154 250 Fuse on F101 012 ane 3 zT AUN BLACK H RED RED WHITE IE re GREEN 1 1 len HIRED MHI TE A WHITE eS cu E lt Cr 10 ie HAE ee jsp WHITE 3h WHITE FAN MOTOR 116 CAPACITOR WHITE 21112111213 POWER TRANS REMOTE SUPPLY MISSION CONTROL TERMINAL 1 a gt 10 REMOTE LET spy TO OUTDOOR UNIT n d INDOOR UNIT 07 06 LARGE CEILING B MODELS AB30 AB36 45 AB54
102. ON ON OFF OFF SW4 3 OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF SW4 4 ON ON ON ON OFF OFF OFF OFF OFF OFF OFF OFF 5 SW5 setting 5 1 Wireless remote controller custom code switch Decid the custom code and restrict the type of infrared control signal in order to prevent mixing of multiple indoor unit signals Remote controller custom code switch Factory setting Custom code Type A Type B ABCD Type C Type D switch 5 2 Frost prevention temperature shift switch Set the frost prevention temperature for indoor unit Frost prevention temperature shift switch Factory setting Frost prevention temperature Normal High 5 3 Draft prevention setting switch only for cassette type Set the flap angle of cassette type unit Draft prevention switch Factory setting flap angle Normal position Draft prevention position Remote controller signal selector Remote controller Normal Normal position 4 Flap angle 35 65 1 Press the MASTER CONTROL button for more than five seconds to start the code change 2 Press the or button to select the desired code A gt B C D 3 Press the MASTER CONTROL button again to end the code change Draft Draft prevention position position 8 bie angle
103. ONE CLOCK ILELIL NONSTOP BEES OPERATION OFF a d ON ALL OFF CENTRAL REMOTE CONTROLLER MASTER CONTROL BACK ZONE TIMER MEMORY CENTRAL DELETE OPERATION CONTROL ENERGY SAVE FILTER DELETE RESET 4e ANTI CoOL FREEZE TIMER MEMORY GROUP SETTING SETTING te CHECK p TEST x 4 1 6 When the error monitor is started the following can be performed The error code for each remote control group indoor units is displayed Up to two of the past error codes are displayed for each of the indoor units the outdoor units and the central remote controller group 1 Press CHECK to start the error monitor The LCD changes to the error monitor screen 2 Press to select the central control number for which its details of the error contents are to be confirmed The number of the 100 ing the error is flashing ALL GROUP 3 Press to select the display mode for the error code ALL GROUP Each press of will switch the display as shown below 000 0 00 ot 02 03 04 05 06 o7 1 2 100 SAL ERROR CORO AML M n GuP
104. P IH oo OO oO _ O O 7 CN22 EX OUT1 CO _ __ EXOU2 72 00 0 00 _ 4 EXOUS 00 0 00 CN25 FLASH 1 O 0 0 26 O O O O O O O O CN27 0 0 0 CN1O4INETWORK CO ICN201 COMMUNICATION O O O O O 0 JO _ THFUSE j OO len __ FANMOTOR J O O O O O O O D PUMP O O _ CN6_ S VALVE O O O O O O CN10 SPM UD O 0 J L JONTT SSEMQRE eoe esu CNi2 HEATER CN13 DSPLAY O 0 O O O 6 6 ISW7 SW8 51 9 swi 02 08 INDOOR UNIT Wall Mounted Ceiling Wall Ni ________ O Oo len FANMOTOR 1 O CN3 1 gt 0 J O CNS VALVE ICN6 DIFFUSERIS WUD 10 0 SPMLR 10 __ 120 lc DISPLAY 2 20 O F BACK 1 L TEST 9 1 G ___ 12 EEVALVE 0 0
105. PROM deletion error se fum im 0 1 sec 5 times 2 times ON OFF flashing flashing ail d 2 in Parallel communication error NEC So 05 02 5 2 OUTDOOR UNIT 5 2 1 NORMAL OPERATING DISPLAY Cooling operation Heating operation Cooling main operation Heating main operation Same performance operation Compressor output Compressor output Compressor output Compressor output Compressor output Compressor output Heat exchanger usage capacity STEP1 Heat exchanger usage capacity STEP2 Heat exchanger usage capacity STEP3 Heat exchanger usage capacity STEP4 Heat exchanger usage capacity STEP5 Heat exchanger usage capacity STEP6 Oil recovery operation Defrosting operation Test run Medium pressure Low pressure by pass O 1 High pressure Low pressure by pass O 2 Under initialization of expansion valve 0 Display Method Lighted continuously 0 5 0 55 OFF flashing Flashing times 888 88565 00000000000 Operation display OUTDOOR PRINTED CIRCUIT BOARD LAYOUTS ON LED 1 OFF 0 5SEC 0 5SEC 2SEC ON LED 2 6 OFF 05 03 5 2 2 ABNORMAL OPERATION DISPLAY Compressor 1 error Compressor 2 error Compressor 3 error Discharge temperature 1 error Discharge temperature 2 error Discharge temperature 3 error High pressure error Pump down error Discharge temperature thermistor 1 error Discharge temperature thermistor 2 error Discharge temperature thermistor 3 error
106. R CEILING TYPE WALL MOUNTED TYPE and CEILING WALL TYPE Press the HORIZONTAL SWING button for more than two seconds The remote controller s HORIZONTAL SWING lamp orange and indoor unit s SWING indicator lamp HORIZONTAL SWING orange will light up In this mode the RIGHT LEFT air direction louvers will swing automatically to direct the airflow both right and left To stop Horizontal airflow SWING Operation Press the HORIZONTAL SWING button for more than two seconds once and again The remote controllers HORIZONTAL SWING lamp and indoor units SWING indicator lamp HORIZONTAL SWING will go out Airflow direction will return to the setting before swing was begun About Horizontal Airflow Swing Operation e The range of swing is relative to the currently set airflow direc tion e f the swing range is not as desired use the remote controller s HORIZONTAL AIR FLOW DIRECTION SET button to change the range of swing e The SWING operation may stop temporarily when the air condi tioner s fan is not operating or when operating at very low speed 04 12 Air swing range Compact wall mounted type indoor unit Air flow direction set Range of swing or D to amp or 0 to TIMER SET TIME TEMP DAY FAN MODE CONTROL MASTER 86 contro CLOCK ADJUST id ENERGY SAVE ST
107. ROUBLESHOOTING 5 5 1 TROUBLE SHOOTING WITH ERROR CODE mg INDOOR UNIT TROUBLESHOOTING ERROR CODE ERROR ERROR CONTENTS CAUSE COUNTERMEASURE 00 No errors 02 Model information error 1 Error occurrence condition When power is turned on Error for the model informa tion which is memorized in EEPROM occurs 2 Relevant operation 1 Relevant indoor unit is stopped Not started 2 Error is displayed on LED of indoor unit or output to communication bus line Clearance Model information which is memorized in EEPROM is recovered normally Model information is not memorized or erased because of some reason Replace control printed circuit board of indoor unit 03 04 Microcomputer communication error Power supply frequency abnormal 1 Error occurrence condition Communication between two microcomputers on indoor unit control printed circuit board is not performed correctly 2 Relevant operation 1 Relevant indoor unit is stopped not started 2 Error is displayed on LED of indoor unit or output to communication bus line Clearance The communication between microcomputers is performed correctly 1 Effect of extraneous noise 2 Control printed circuit board of Indoor unit is faulty 1 When power is turned off and then turned on again 1 If error doesn t occur printed circuit board is normal Then remove noise sources near indoor unit 2 e
108. Refrigerant R407C _AAIRSTAGE Variable Refrigerant Flow System Multi Conditioning System for Buildings HEAT RECOVERY SERVICE MANUAL FUJITSU GENERAL LIMITED Multi Air Conditioning System for Buildings Variable Refrigerant Flow System SERVICE MANUAL Refrigerant R407C CONTENTS 1 TEST RUN 1 1 CHECK ITEMS BEFORE TEST RUN 2 22 2 2 ou 1 2 CHECK ITEM DURING TEST 1 2 TEST RUN METHOD etude toto einen 1 3 1 TEST RUN FROM OUTDOOR PC BOARD ese 1 3 2 TEST RUN FROM REMOTE CONTROLLER eene 1 4 TEST RUN CONTROL eu 2 FUNCTION OF PRINTED CIRCUIT BOARD 2 1 PCB EAYOUTS iine ee 2 1 1 INDOOR UNIT CONTROL CIRCUIT 022222 00 2 1 2 INDOOR UNIT CONTROL CIRCUIT BOARD COMPACT WALL MOUNTED 2 1 3 OUTDOOR UNIT CONTROL CIRCUIT BOARD ees 2 1 4 WIRED REMOTE CONTROLLER SIMPLE REMOTE CONTROLLER CIPGUITBOARDU ieu 2 1 5 CENTRAL REMOTE CONTROLLER CIRCUIT 2 1 6 NETWORK CONVERTORS CIRCUIT BOARD 2 2 MICROPROCESSOR FUNCTION LIST ettet 29 4 INDOOR UNITA Setia n 2 2 2 OUTDOOR UNI eh cue A 2 3 FUNCTION AND SETTING OF EACH SWITCH tee 2 3 1 INDOOR UNIT EXCEPT FOR COMPACT WALL MOUNTED 2 3 2 INDOOR
109. Replace Indoor unit communication printed circuit board 2 Replace Indoor unit control printed circuit board 05 13 ERROR ERROR CONTENTS CAUSE COUNTERMEASURE 21 Parallel 1 Error occurrence condition 1 Effect of extraneous noise 1 When power is turned OFF and turned communication Communication between ON again error indoor unit control printed 1 If error doesn t occur printed circuit circuit board and indoor unit board is normal Then remove noise communication printed sources near indoor unit circuit board is not 2 If error occurs again remove noise performed normally sources and take measure with the 2 Relevant operation following countermeasure No 2 3 1 u a oe 2 Indoor unit communication 2 Check the insertion of indoor unit continued Error is displayed KR D aue on standard wired remote board insertion is faulty communication printed circuit board controller and displayed 3 Printed circuit board is faulty 3 Replace printed circuit boards with LED of indoor unit following procedure and check 2 If error continues for 90 the operation seconds after it s 1 Replace Indoor unit communication occurrence une printed circuit board transmission error 2 Replace Indoor unit control printed 1F is output circuit board 3 Clearance Communication is performed correctly between indoorunit control printed circuit board and indoor unit communication printed
110. SE EZ 000FWSE ON Cooling only of single spilt type Without weekly timer EZ 095YWSE OFF Wall mounted with wired RC Without weekly timer EZ 098VWSE Asterisks are used in place of variable characters 2 SW103 5 6 7 8 setting Set the DIP SW 103 5 6 7 8 according to number of the connected indoor units Number of the connected indoor units Factory setting pip sw 103 Number of pip sw 103 Number of DIP SW 103 Number of connected the connected the connected the 6 7 8 Indoor unit 6 7 8 Indoor unit 6 7 Indoor unit OFF OFF OFF 1 ON OFF ON OFF 13 ON OFF 14 OFFION OFF OFFIOFF ON 15 OFFION OFF ON ON 16 OFF OFF ON OFF ON 3 DIP SW 107 Setting 3 1 DIP SW 107 1 setting forbidden Factory setting SW 107 1 3 2 Wired remote controller validity invalidity Select the wired remote controller validity invalidity Wired remote controller Factory setting Wired remote controller Invalidity validity 02 26 4 DIP SW 108 setting 4 1 External input validity invalidity Select the external input function validity invalidity Factory setting External input function Invalidity validity 4 2 External input
111. UTR YSSA for external input and output are shown in the right figure SW107 SW108 SW109 SW103 CN105 RED EXTIN 1 Control input Operation Stop Indoor units that connected to network convertor can be controlled all operation all stop by this input a Input select DipSW108 1 DipSW108 2 Input select ON OFF Edge b In the case of Edge input CONNECTOR INPUT SIGNAL COMMAND OFF 0ON operation ON OFF All stop CN105 ON Ch1 OFF Indoor All operation Unit All stop i Li C In the case of Pulse input CONNECTOR INPUT SIGNAL COMMAND CN105 Ch1 OFF ON operation RED OFF ON Allstop The width of pulse must be longer than 200ms On CN105 Ch1 Off On CN105 Ch2 Off All operation Indoor Unit All stop 02 34 2 Output 1 Operation display EXT OUT1 This output indicates the indoor unit s Operation or Stop status CONNECTOR OUTPUT STATUS SIGNAL CN108 Indoor units Stop BLACK Indoor units Operation Indoor E 71 Shon Indicator CN108 BLK Open 1 Always insert a diode on both ends of relay coil 2 2 3 Max 15V 50mA 2 Error display EXT OUT2 This output indicates the indoor unit s Normal or Error status CONNECTOR OUTPUT STATUS SIGNAL CN109 Open All ofthe indoor units Normal WHITE Short At least one more indoor units Error
112. are stopped 2 Error is displayed on LED of outdoor unit and output to communication bus line Clearance Pump down DIP SW1 3 is switched from ON to OFF ERROR CAUSE COUNTERMEASURE Pump down SW remains ON Outdoor unit fan motors are faulty Check outdoor unit fan motors operation Switch pump down DIP SW1 3 in control printed circuit board of outdoor unit from ON to OFF Remove the obstruction in wind path If the fan motors are faulty replace the motors Node setting error 1 Error occurrence condition Communication printed circuit board of outdoor unit isn t initialized correctly Relevant operation Error is displayed on LED of outdoor unit Clearance Communication printed circuit board of outdoor unit is initialized correctly 1 Effect of extraneous noise 2 Printed circuit board is faulty Parallel communication error 1 Error occurrence condition Communication between control printed circuit board and communication printed circuit board of outdoor unit isn t performed correctly 2 Relevant operation 1 Current operation is continued Error is displayed on LED of outdoor unit 2 If error is kept for 90 seconds since error occurs new communication error 1F occurs Clearance The communication between control printed circuit board and communication printed circuit board of outdoor unit is performed correctly 1 Effect of extraneous noise 2 Outdoor un
113. arge from the liquid phase side whose composition is stable 5 Always add the refrigerant for the appropriate amount For the calculation method please refer to 6 1 ADDITIONAL CHARGE 6 Either larger or smaller refrigerant charge amount leads to the cause of trouble 7 For after service purpose the added refrigerant charge amount and the calculation shall be indicated firmly on the service label over the control box cover 06 12 7 Precautions on Header installation Since necessary performance may not be obtained due to the mounting angle header installation is specified as follows 1 Connection pipe to each indoor unit shall be connected from the edge of header Connect the pipe in order of 1 2 3 as shown in the figure below 2 Header shall be mounted horizontally Permissible tolerance is 10mm 19 between inlet and edge of the header Always check with a level so that the header shall be positioned as shown below gt JESS o SS SY 0 to 10mm el 10 to 10 nn 0 to 1 Viewed from A 0 to 10mm Viewed from B 0 to 1 10 to 10 3 Take a level After the pipe welding and insulation use a level again to make sure that the header is positioned as shown in the figure above and then secure it in place 8 Other installation information Please refer to DESIGN amp TECHNICAL DATA to find more detailed installation information on installation the outdoor unit on installation
114. bnormally error Error display Error display Error display The fan of the Indoor thermistor is faulty Measure the thermistor Refer to section 7 2 1 to find the Thermistor Indoor unit Thermistor indoor unit does resistance and compare it to correlation between the tempera error error error not rotate the ambient temperature ture and thermistor resistance When short or open circuit of thermistor occurred Normal Error display Normal Miswring between RB unit and When a relevant indoor unit Wring between RB unit and in display High display indoor unit performs the heating operation door unit must correspond to the pressure the high pressure becomes high piping connection error and warm air is not discharged Trouble occurs especially easily from the indoor unit with the UTF Y90A4A 05 40 LED display Indoor Outdoor Remote Symptom that Check method um u lean other Cause Error state check method Remarks Body PCB LED LCD than title LED 1to6 Error display Error display Error display Outdoor thermistor is faulty Check by measuring the Refer to section 7 2 1 to find the Outdoor unit Thermistor Outdoor unit thermistor resistance and correlation between the tempera error error x error comparing it to the ambient ture and thermistor resistance temperature gt lt When short or open circuit of thermistor occurred Normal Norma
115. c 1 0 sec 4 Stop lamp red Autorestaitdisabei RE rn Die sw 24 OFF Timer lamp Bas E ee 41 0 sec green OFF o operation oy 2 or lamp red OFF Oil recovery operation Note Indicator lamps are on the front panel of the indoor unit 1 If a power failure occurred the lamps of operation and timer flash on and off alternately when the power returns 2 While the indoor fan motor stops the operation lamp flashes on and off 05 01 5 1 2 ABNORMAL OPERATION DISPLAY Error display OPERATION TIMER VERTICAL HORIZONTAL Error contents lamp lamp SWING lamp SWING lamp 2 Model information abnormal 0 1sec 0 1 sec 0 1 sec 0 1 sec Power sapie tregueney dbnormal ON OFF ON OFF ON OFF ON OFF flashing ONDES Room temperature thermistor error dad 12 flashing Indoor unit heat exchanger thermistor inlet error Ad No en Indoor unit heat exchanger thermistor middle error CEE an Indoor unit heat exchanger thermistor outlet error ons Sus 5 times 0 1 sec 1 times Communication error 1 ff flashing ON OFF flashing indoor unit lt Wired Simple remote controller flashing fas no Microcomputer error 5 times 0 1 sec 4 times N gs EL m ON OFF flashing oor unit lt Indoor unit fan or Times Ne Blower temperature thermistor error ONGEF fasting Outdoor unt enor EEPROM access erro a 1 EE
116. cation printed circuit board of transmission adaptor is performed correctly circuit board of transmission adapter is pressed or power is turned on again 1 If error doesn t occur printed circuit board is normal Then remove noise Sources near transmission adaptor 2 If error occurs again remove noise sources and take measure with the following countermeasure No 2 3 2 Transmission adapter communication printed circuit board insertion is faulty 2 Check insertion for the communication printed circuit board of transmission adapter 3 Printed circuit board is faulty 3 Replace printed circuit boards with following procedure and confirm the operation D Replace Transmission adapter communication board Replace Transmission adapter control board 05 29 transmission adapter control panel is not performed correctly Relevant operation Error display Only error code display operation can be performed Other operations are ineffective Clearance The communication between transmission adapter and operation panel is performed correctly 2 Communication line between transmission adapter and control panel connection is faulty or disconnecting 3 Communication parameter setting error 4 Printed circuit board is faulty CODE ERROR ERROR CONTENTS CAUSE COUNTERMEASURE 1C Connection Error occurrence condition 1 Effect of
117. covery 3 1 2 COMPRESSOR OUTPUT PATTERN The output pattern of a compressor is defined as below Compressor output pattern COMPRESSOR 1 COMPRESSOR 2 COMPRESSOR 3 OUTPUT PATTERN 2HP 4HP 6HP Step 0 OFF OFF OFF Step 1 ON OFF OFF Step 2 OFF ON OFF Step 3 ON ON OFF Step 4 OFF OFF ON Step 5 ON OFF ON Step 6 OFF ON ON Step 7 ON ON ON 3 1 3 3 MINUTES RESTART PREVENTION 3 MIN ST When the compressor is stopped the compressor does not start on any condition for 3 minutes afterwards But this function is excluded when defrosting oil recovery is performed and the power is turned on 03 01 3 1 4 COMPRESSOR RECOVERY OPERATION If compressor 1 2 or 3 fails or if two compressors fail at the same time the remaining compressor s perform recovery operation to prevent interruption of air conditioning system operation by a failure When compressor 1 2 or 3 is judged to be faulty the system is operated by switching the compressor output pattern compressors 0 to 6 as shown in the following table Compressor failure is displayed by LEDs on the PCB of the outdoor unit and by output ERROR to the communication bus line standard wired remote controller central remote controller PC controller a When compressor 1 2 HP fails compressor 2 is substituted for compressor 1 b When compressor 2 4 HP fails compressor 3 is substituted for compressor 2 c When compressor 3 6 HP fails compresso
118. ds with allocation manual storing 1 faulty following procedures and confirm manual storing 2 is the operation performed from key p Replace Transmission adaptor operation or initial setting commutation board menu mode is cancelled Replace Transmission adaptor control board 8 Replace Control panel printed circuit board 1F Transmission 1 Error occurrence condition 1 Effect of extraneous noise 1 1 After indoor unit power is turned on error Communication between indoor unit and central remote controller is cut off for a certain time 2 Relevant operation 1 Error Indication Central Remote can be operated 2 If parallel communication error occurs and communication error occurs after a certain time error is displayed Central remote control can be operated again 1 If error doesn t occur printed circuit board is normal Then remove noise Sources near indoor unit If error occurs again remove noise sources and take measure with the following countermeasure 1 2 1 2 After ACL key is pressed or power is turned on again 1 If error doesn t occur printed circuit board is normal Then remove noise Sources near control panel If error occurs again remove noise sources and take measure with the following countermeasure No 2 6 2 Communication line is not connected connection fault or disconnection 2 Check if communication line is wired to each indoor unit 3 Indoor unit power off
119. e Indoor unit address switch Indoor unit address switch Auto restart validity invalidity Forbidden Refrigerant circuit address switch Refrigerant circuit address switch Refrigerant circuit address switch Forbidden A 09 gt Indoor unit address switch Rotary SW Refrigerant circuit address switch Jumper Wireless remote controller custom code wire Wireless remote controller custom code BE SWITCH POSITION e Compact wall mounted type indoor unit control circuit board Controller PCB Power supply PCB 02 02 2 1 3 OUTDOOR UNIT CONTROL CIRCUIT BOARD SW7 SW6 SN5 SWASWS SW2 SW1 T T T TII CN33 C CN27 CN34 CN45 OM4 CN24 LED4 o 6 LED1 CN25 ovs LEDS 0 0 LED2 CN26 LED6 0 LED3 CN42 CN3 Ze LOBOS CN19 CN13 CN11 CN9 Outdoor unit Test run Cooling 2 Test run Heating Pump down operation Forced defrost operation Silent operation mode Forced oil recovery operation Forbidden Forbidden Forbidden Forbidden Defrost temperature setting SW1 Defrost temperature setting SW2 Forbidden Forbidden Forbidden Forbidden Base heater validity invalidity Forbidden Forbidden Forbidden Forbidden Forbidden System type switch 1 1 2 System type switch 2 3 Forbidden 4 Forbidden SW 8 Refrigerant circuit address switch
120. e after the power Operation recovery ler is not accepted by indoor unit turned on 2nd oil recovery opera display LED operation tion and afterwards every 6 Play LE hours operation time flashes X Operation LED flashes 3 sec ON 1 sec OFF and repeat No display Cannot be display or The fan ofthe Indoor control PCB is faulty The symptom has many When the PCB or the connection error display specified error display indoor unit branches depending on the wiring is faulty problem can Cannot be Cannot be does not rotate error contents and there is no often be solved by replacing specified specified System does effective check method the PCB not cool heat Cannot be No display Cannot be The fan ofthe Outdoor control PCB is faulty The symptom has many When the PCB or the connection specified or error specified indoor unit branches depending on the wiring is faulty problem can display does not rotate error contents and there is no often be solved by replacing Cannot be System does effective check method the PCB specified not cool heat 4 Water leaks from the indoor unit Float switch is faulty LED display Indoor Outdoor Remote Symptom that Check method unit unit controller can ceur other Cause Error state check method Remarks Body PCB LED than titl LED 1106 EE ARES Normal Normal Normal Drain hose is faulty Tilt the drain hose from t
121. e does not become low when all the indoor units are operating During the heating operation the air flow temperature does not become high when only one indoor unit is operating For light gas insufficiency capacity drops only in a specific operation state Note that this symptom resembles faulty caused by a bad opening of indoor unit s electronic expansion valve 05 38 LED display Indoor Outdoor Remote Symptom that unit unit controller occur other Cause Check method Remarks Body PCB LED than title Error state check method LED 1106 LED Normal Normal Normal Indoor unit electronic expansion When the relevant indoor unit 1 Disconnect the plug from PCB display display display valve doesn t work performs the cooling operation and check the coil resistance Fully closed state Don t open RB unit solenoid valve SVD is faulty the compressor operates but the air flow temperature of the indoor unit is not cool When the relevant indoor unit performs the heating operation the compressor operates but the air flow temperature of the indoor unit is not warm During heating operation a voltage AC 220 240V is applied cases of wall mounted and ceill ing wall type indoor units CN5 across terminals 2 4 but the gas pipe and airflow of indoor unit does not become warm to indoor control PCB CN6 in the red white red orange brown blue brown yellow 100 200 Q
122. e fan is stopped to prevent blowing out of cold air when the machine is still not warm at the start of heating operation About 3 minutes are necessary When the room temperature at heating operation reaches the set temperature the FAN is stopped and room temperature rise is prevented At this time the fan is operated periodically to detect the room temperature 4 minutes stop 1minute operate This is the filter cleaning time After cleaning the filter press the ZONE SET key for a few seconds to be released Anti freeze operation is set so that the water pipe and electronic devices do not freeze Operation starts at room temperature 5 C or less and continues until the room temperature reaches 8 C or more When operation is inhibited during central control by central remote controller the buzzer that denies the wireless remote controller signals sounds When an AUTO FAN and an operation other than the operation another indoor unit is already performing at cooling heating selection type or HEAT operation at a cooling only unit is commanded operation cannot be performed at that setting Timer setting cannot be performed by wireless remote controller at an indoor unit with wired remote controller connected Set the timer from the wired remote controller The valve opens to return the refrigerant collected inside the indoor unit to the outdoor unit even after operation stops Remains for about 4 minutes maximum After co
123. ecting pipes until the pressure gauge indicates 76 cmHg When 76 cmHg is reached operate the vacuum pump for at least 1 hour After vacuuming inside the indoor unit and connecting pipes remove the cap of the two valves Open the handle spindle of the Large and middle valves Ball valve Open the spindle of the Small valve 3 way valve with a hexagon wrench 7 Tighten the cap of the two valves to the specified torque Tightening torque Ball valve 3 way valve 15 kgfecm 1 47 Nem or less Spindle handle 100 to 120 kgf 9 8 to 11 7 N m 150 to 200 kgf cm cap 14 7 to 19 6 Nem Large pipe Small pipe Charging valve Middle pipe 6 Additional charge 200 to 250 kgf cm 19 6 to 24 5 Cap 1 Be careful don t charge with wrong refrigerant 2 When moving and installing the air conditioner do not mix gas other than the specified refrigerant inside the refrigerant circuit Ball valve Suction Gas Open valve state Closed valve state 3 way valve Spindle Hexagon wrench If the spindle handle is not fully open performance will degrade and an abnormal sound will be generated 3 When charging the refrigerant always use an electronic balance for refrigerant charging to measure the refrigerant by weight 4 R407C is a mixture of 3 refrigerants with different evaprotion temperature The composition changes if it is charged in gas phase Therefore always ch
124. ection is other than short or open Detection is performed when Compressor continues to operate for 5 minutes or longer 2 Discharge temperature thermistor THos is faulty or comes off Check the resistance of discharge temperature thermistor THo1 If it s abnormal replace thermistor 05 18 ERROR CONTENTS CAUSE COUNTERMEASURE 10 Outdoor 1 Error occurrence condition 1 Connector contact is faulty 1 Check if the connector of outdoor thermistor error Each thermistor condition dapi thermistor loosens _ 2 Outdoor temperature 2 Check the resistance of outdoor 2 Relevant operation thermistor is faulty temperature thermistor If it s 1 All Compressors are abnormal replace thermistor 11 Heat exchanger stopped 1 Connector contact is faulty 1 Check if the connector of heat inlet For suction temperature exchanger inlet thermistor thermistor 1 thermistor error loosens comes off error compressors are not stopped 2 Heat exchanger inlet 2 Check the resistance of heat 2 Error is displayed on LED of thermistor is faulty exchanger inlet thermistor If it s outdoor unit and output to abnormal replace thermistor 497 eommauinication bias lite 1 Connector contact is faulty 1 Check if the connector of heat ger inlet For suction temperature exchanger inl
125. efrigerant and there is some fear that a mixing ratio changes In order to avoid the refrigerant from returning to the compressor in a liquid state the refrigerant can be charged instead of giving a load to the compressor with a safety charger Control valve Fig 4 14 The control valve prevents the refrigerant from spouting when it is removed as the charging hose side and the ser vice port side are possible to open and close at the same time Thermistor vacuum gauge Fig 4 15 To remove moisture from the refrigerating cycle complete ly it is necessary to perform appropriate vacuum drying For that reason vacuum conditions can be confirmed cer tainly Vacuum valve Fig 4 16 This valve builts in a check valve and it is easily possible to vacuum a refrigerating cycle or check for degree of vac uum with it TOOLS AND EQUIPMENT R407C Gas charging Pressure control and Circuit switching Safety charger rig 4 13 Vacuum pump Fig 4 5 Vacuum holder Fig 4 6 06 10 Piping work Cylinder Torque wrench Flare 100 Fig 4 9 Guage manifold Fig 4 1 Charge hose Fig 4 2 6 5 PRECAUTIONS FOR INSTALLATION 1 Preparing pipes 1 Use the designated size diameter amp thickness Diameter and thickness of copper pipes is shown below
126. em address of the outdoor unit to which the refrigerant piping is connected Indoor unit address SW 6 setting is incorrect address duplicated Operate each indoor unit for 5 minutes or more The relevant outdoor unit stops and operates unsteadily Compressor capacity and heat exchange capacity is incorrect by observing the LED of PCB of outdoor unit Multiple indoor units in one refrigerant system must not be set to the same indoor unit address Installed piping is unsuitable pipe length is too long Actual length exceeds 100m Check the position of outdoor and indoor units and estimate the piping length When the pipe length is too long the cooling and heating capacity may be insufficient Installed piping is unsuitable Gas pipe diameter is incorrect Check the indoor unit capacity and pipe diameter When the gas pipe diameter is large cooling and heating capacity will be insufficient Refrigerant leakage Check refrigerant leakage using a gas detector Refrigerant charged state Regarding air tightness test after installation or repair pressurize the system with nitrogen 2 94MPa and test for leaks with soapy water and allow the system to stand for 24 hours and then check that there is no drop in pressure Note When the outdoor temperature changes 5 C the test pressure changes 0 05MPa Insufficient gas light During the cooling operation the air flow temperatur
127. ent and LED will go out The indoor unit will start test run operation ON OFF NOTE If the test run is stopped midway do the operation shown in 3 above and will come on then do the operation shown 4 Test run will stop 01 04 ni nn 00 C CENTRAL CONTROL ZONE OFF 0001 CENTRAL CONTROL c UU 8 C3 0337 CENTRAL CONTROL GROU P 0 CENTRAL CONTROL WEIL CENTRAL CONTROL ZONE OFF 04 100 55 CENTRAL CONTROL x100 1 4 TEST RUN CONTROL 1 When the test run signal is transmitted from standard wired wireless remote controller simple remote controller and central remote controller 1 The test runn operation starts and the electric expansion valve is controlled to a maximum flow regardless of the temperature condition 2 De frosting and frost prevention operation has priority over item 1 3 After 60 minutes passes the test run s
128. er supply of indoor OFF units 4 The indoor unit address 4 Check the indoor unit address setting setting is faulty 5 The setting of DIP SW of 5 Check the setting of DIP SW103 1 4 network convertor is faulty of network convertor to conform the matching between indoor unit type and RC type Check the setting of DIP SW103 5 8 of network convertor to conform the number of the connected indoor units 6 Indoor unit printed circuit 6 Replace indoor unit circuit board or board or network convertor network convertor printed circuit printed circuit board is faulty board 1F Transmission 1 Error occurrence condition 1 Effect of extraneous noise 1 1 Check the continuity of error error with VRF system Transmission between VRF system and network convertor is not performed normally Undefined signal is accepted from VRF system Relevant operation Error code is displayed Control from and display on VRF system cannot be performed Other control methods are still possible 1 1 If error is cleared automatically printed circuit board is normal Please remove noise sources near network convertor 2 If error isn t cleared automatically check following 2 After the SW104 button of network convertor PCB is pressed for more than five seconds or the power of network convertor is reset 1 If error doesn t occur printed circuit board is normal Please remove noise sources near net
129. ero Communication line between Check the wiring color and the The combinations of wiring color indoor units for remote controller wiring connection of indoor unit and indoor unit terminal board for group control is faulty terminal board for remote control4remote controller are as following Erroneous connection ler red to1 white to 2 and black to 3 polarity incorrect Normal Normal Normal The setting of master slave When indoor unit operated for Do not start to operate when display display display setting switch DIP SW 1 4 of each remote control group there is no master unit SW 1 4 the remote controller is not correct operation is abnormal set to OFF in one remote controller group Capacity of the indoor fan capacitor is faulty Check the indoor unit Model No and capacity of the capacitor Thermo control The set temperature is very close to the room temperature and sent louver operation signal is not accepted by indoor unit Indoor fan operates 1 2 minutes for every five minutes during thermo control Cold air prevention control is in progress heating operation The area heat exchanger near outlet of the indoor unit is not warm and up down louvers are set to a horizontal position Wait several minutes then restart the heating operation Cool heat switching control is in progress At least 3 minutes did not elapse after switching the operation mode from cool
130. et thermistor THHi2 thermistor 2 thermistor error error is only 5 gt 1005008 opcomes off _ 2 Heat exchanger inlet 2 Check the resistance of heat displayed LED of outdoor thermistor is faulty exchanger inlet thermistor If it s unit abnormal replace thermistor 13 Heat exchanger 3 2 1 Connector contact is faulty 1 Check if the connector of heat inlet other than short or open 2 mar 2 Heat exchanger inlet _____ 2 Check the resistance of heat Error thermistor is faulty exchanger inlet thermistor If it s abnormal replace thermistor 14 Heat exchanger 1 Connector contact is faulty 1 Check if the connector of heat outlet exchanger outlet thermistor THHo1 thermistor 1 loosens or comes off error 2 Heat exchanger outlet 2 Check the resistance ofheat thermistor is faulty exchanger thermistor THuo If it s abnormal replace thermistor 15 Heatexchanger 1 Connector contact is faulty 1 Check if the connector of heat outlet exchanger outlet thermistor 2 thermistor 2 loosens or comes off 2 Heat exchanger outlet 2 Check resistance of heat thermistor is faulty exchanger outlet thermistor THHo2 If it s abnormal replace thermistor 16 Heat exchanger 1 Connector contact is faulty 1 Check if the connector of heat outlet exchanger outlet thermistor thermi
131. etting mode D21 D18 CPU Reset Contents D9 Light up when SW1 is pressed Neuron ID Transmission D14 Light up when SW2 is pressed Neuron ID Transmission D25 D18 Indicates the setting value specified with SW5 and SW6 D29 D26 Indicates the setting mode selected with SW3 SWITCH AND LED POSITION E O D14 D29 28 27 26 From left sw2 O BB _ 99899608 D25 24 23 22 21 20 19 18 From left sm SW3 51 4 SW6 SW7 SW5 02 07 2 2 MICROPROCESSOR FUNCTION LIST 2 2 1 INDOOR UNIT Universal Large Ceiling INDOOR UNIT TYPE FUNCTION O O O O FUNCION 1 O O O O O O O INDOOR UNIT ADDRESS 1 O O O O O FORBIDDEN OO O REFRIGERANT ADDRESS 1 O O O O O REFRIGERANT ADDRESS 2 O O O O O swt0 CONTROLLER ADDRESS O O O O O O SW2 6 3 5 4 SW5 CN14 EE VALVE O O O O O oO _ JLOATSW J O O 16 MOTORF BACK len O _ CN18 TEST ____ _ _ O
132. extraneous noise 1 1 Check error continuity error Communication between 1 If error is cleared automatically printed circuit board is normal Then remove noise sources near central remote controller 2 If error isn t cleared automatically check following 1 2 After ACL key is pressed RESET key on control board of transmission adaptor is pressed or power is turned on again 1 If error doesn t occur printed circuit board is normal Then remove noise sources near central remote controller 2 If error occurs again remove noise sources and take measure with the following countermeasure No 2 3 4 2 Check if communication line between transmission adapter and control panel is disconnected or the other problem for connection occurs 3 Check setting of 5 1 1747 on control panel and DIP SW2 1 u4 DIP SW3 17U3 on transmission adapter printed circuit board 4 Replace printed circuit boards with following procedure and confirm the operation D Replace Transmission adaptor control board 2 Replace Control panel printed circuit board 05 30 ERROR CODE ERROR ERROR CONTENTS CAUSE COUNTERMEASURE 1D Initial setting 1 Error occurrence condition 1 Effect of extraneous noise 1 Initialize the setting again error Initialization is not 1 If error doesn t occur printed circuit performed normally board is normal Then remove When recognized as only noise sources near
133. flow indication flashes Refrigerant R407C AIRSTAGE 6 APPENDING DATA 1 INSTALLATION 6 APPENDING DATAT INSTALLATION 6 1 ADDITIONAL CHARGE Application models AO 90MPCMF Additional charge for pipe length Liquid pipe outside diameter mm Additional refrigerant kg m The amount of additional charge C kg Total length of 12 7 C liquid pipe Total length of 9 52 liquid pipe m of 86 35mm liquid pipe m Round up C to 2 decimal place Total Example When the outdoor unit model is AO 90MPCMEF and liquid pipe length are 20m 12 70 15m 89 52mm and 20m 6 35 respectively Additional charge 20 m x 0 136 kg m 15 m x 0 063 kg m 20 m x 0 025 kg m 1 2 5 37 kg 6 2 ADDRESS SETTING With this system an address must be set for the indoor unit outdoor unit and remote controller and central remote controller 6 2 1 KINDS OF ADDRESS AND SETTING RANGE SETTING UNIT SETTING RANGE TYPE OF SWITCH REMARKS Outdoor Refrigerant Setting d i unit circuit address example sw 9 SW 8 Refrigerant Setting circuit address exar pig 0 Indoor unit address Setting e Always SW 7 set 0 example Shown in the next page SW 7 SW6 Setting Remote controller address uu Remote controller ON OFF DIP SW1 1 OFF Not terminated switch 1 ON Terminated Remote Number of indoor unit con
134. fter the ENERGY SAVE button is pressed the set tempera ture will be raised about 0 5 every 30 minutes When it has gone up a total of 1 C then it will hold that tempera ture Set to the ENERGY SAVE mode 30 ues NONSTOP CLOCK Mar sec 35 E n DAY DAY OFF DEFROST TEST SET TIME TEMP DAY CONTROL MASTER amp amp contro ENERGY SAVE START STOP DAY SFF The ENERGY SAVE light goes off and the unit will return to the former operat ing conditions 04 13 4 6 ANTI FREEZE CONTROL 1 About the ANTI FREEZE The freeze prevention fuction operates when the START STOP button is pressed and the remote controller is in stop mode indoor unit is in stop mode When ever the room temperature falls to 5 C it automatically sets the fan to low speed and starts the heating operation This operation stops when the tempera ture in the room rises reaches 8 SET TIME CONTROL MASTER v2 9 2 To Use the ANTI FREEZE e ENERGY save STARTISTOP Press the VERTICAL AIR FLOW DIRECTION and the HORIZONTAL AIR FLOW DAY OFF DIRECTION SET Button at the same time for more than three seconds This operation is only enabled with the remote controller set to stop mode 3 To Stop the ANTI FREEZE Press the VERTICAL AIR FLOW
135. he The same symptom will also display display display indoor unit to the drain outlet appear when the drain hose is clogged Error display Error display Error display Drain pump is faulty During cooling operation drain X Generated when the float Drain error Indoor unit Drain error LS Cassette type only pump is not effective even though switch does not return even error X voltage DC5V is applied to though 3 minutes have elapsed the terminal of CN5 for wall mounted and ceiling wall type Remove the float switch and move the float up and down and check the resistance after the operation signal was sent from the float switch When the float is lowered the circuit is open high resistance and when the float is raised the circuit is closed low resistance X Occur when the float switch does not return even though 3 minutes have elapsed after the operation signal was sent from the float switch 05 44 5 Others 05 45 LED display Indoor Outdoor Remote Symptom that Check method unit unit controller can occ rother Cause Error state check method Remarks Body PCB LED han title LED 1to6 Normal Normal Normal The electronic expansion valve When the indoor unit power is display display display opening of indoor unit is faulty reset 5 10 times at a 2 3 minutes interval the expansion valve may close Coil resistance red white
136. ic expansion valve EEV1 EEV2 opening is faulty Open excessively fully open There is no effective check method 05 39 At low outdoor temperatures cooling may become poor when EEV1 or EEV2 is open excessi vely Turn off the power source of PCB of the outdoor unit to initialize the electronic expansion valves for several times Put a 3 minute in terval between each initializations The electronic expansion valve may return to normal Coil resistance red white red orange brown blue brown yellow 170 2109 LED display Indoor Outdoor Remote Symptom that Check method unit unit controller occur other Cause Error state check method Remarks Body PCB LED T than title LED 16 Normal Normal Normal sound Installed piping is not suitable Check the capacity of indoor unit When the diameter is large display display display heard from _ piping diameter is and the pipe diameter a refrigerant rushing sound is indoor unit incorrect generated and when the diameter is small capacity will be insufficient Outdoor heat exchanger Check the heat exchanger When 4 way valves or solenoid Switching 4 way valves 4WV2 tion capacity at the LED on the valves are faulty the high pres 4WV3 4WV4 or solenoid valves outdoor control PCB Refer to sure will rise during the cooling SV7 SV8 are faulty section 5 2 operation and the lo
137. ically operate Resistance of compressor at 25 C line to line Compressor lock Comp 1 8 64Q 7 Compressor motor burned Comp 2 3 7009 7 3 0 5179 7 Compressor is faulty When the compressor does not When this trouble occurs the Compressor lock operate measure the line to line the compressor has deteriorat and line to ground resistance of ed with black color the compressor Therefore long term operation When the compressor is locked should avoid because it will the resistance will show cause another compressor lock value Compressor is faulty When the compressor does not When this trouble occurs the Compressor motor burned operate measure the line to line may not deteriorate and line to ground resistance of Therefore operation can be the compressor continued the power line of When the motor is burned the the demaged compressor line to line resistance increases be disconnected open circuit and line to ground resistance decreases Error display Error display Error display Compressor is faulty compressor operates but The compressor wiring is red R Outdoor Reverse Outdoor Reverse phase the high pressure does not rise white S and black T unit error phase error unit error Error display Error display Error display Outdoor unit communication When power reset for the the display returns to normal by Comm
138. ing heating operation Base heater 220 240V AC 35W field supplied 02 20 6 SW6 setting DIP SW 6 1 SW6 2 SW6 3 and SW6 4 setting forbidden 7 SW7 setting 7 1 System type switches SYSTEM TYPE SWITCHES Factory setting ON OFF Heat recovery Forbidden 7 2 Dip SW 7 3 and SW 7 4 setting forbidden ROTARY SWITCH SETTING SW8 9 setting Rotary SW Description Remarks Refrigerant circuit Refrigerant circuit address 1 address the first digit Refrigerant circuit Refrigerant circuit address 2 address the second digit 8 9 EXTERNAL OUTPUT Connector Output Error Display 02 21 2 3 4 WIRED SIMPLE REMOTE CONTROLLER DIP SWITCH SETTING 1 SW1 setting 1 1 Remote controller switch 1 This is used to set up the terminated resistance of the wired remote controller When 1 remote controller is connected to remote controller group set this ON all the time When 2 remote controllers are connected to remote controller group set the Master one OFF and set the Slave one ON REMOTE CONTROLLER SWITCH 1 Factory setting Terminator setting Not terminated Terminated 1 2 Number of indoor unit connection One Multiple This is switched according to the number of connected indoor units NUMBER OF INDOOR UNIT CONNECTION 4 Factory setting Number of indoor unit One unit connection Multiple unit connection
139. ing spans one or two ON times and one or two OFF times per day e Set time to a resolution of 5 minutes e OFF time can be carried over to the subsequent day e Use the DAY OFF setting to cancel operation for any day of the coming week one time cancellation 04 01 Setting Up the Weekly Timer Operation Press the START STOP button to stop the air conditioner and then proceed as follows 1 Press the TIMER MODE button so that WEEKLY appears on the display The display now shows the current day by DAY CODE the first ON and OFF times for the day the WEEKLY 1 times the fan speed and the operating mode The top time value gives the ON time and the bottom value gives the OFF time If either time is not set the corresponding time display is blank 2 Press the TEMP DAY button to select the day that you want to set up A Use to advance the day forward w Use to turn the day back DAY CODE 1 2 3 4 5 6 7 DAY OF THE WEEK MON TUE WED THU FRI SAT SUN 3 Hold the SET button down for 3 seconds The WEEKLY 1 ON time starts flashing and the fan speed and operating mode displays go off 4 Press the SET TIME button to set the day s first ON time A Use to advance the day forward w Use to turn the day back Press once to move the time 5 minutes hold down and the time will move 10 minutes at a time The following procedures of 5 6 7 is for UTB
140. ing to heating or from heating to cooling When the operating state was switched from cool to heat heat to cool or stop to heat it takes 3 minutes to balance the refrigerant pressure in the RB unit 05 36 LED displa Indoor Outdoor Remote Symptom that unit unit controller can occur other Cause Remarks Body PCB LED LCD than title LED 1to6 Normal Normal Filter sign The meshes of the filter were Check if the filter is dirty When the operating time of fan display display display clogged up motor of any indoor unit exceeds 150 hours the filter cleaning sign appears at the wired remote controller The operating time of fan motor can be reset by pushing the ZONE SET button for more than 3 seconds The filter cleaning sign is in formed by flashing of the set temperature display 1 sec ON 1 sec OFF and repeat Controlling Controlling Normal Abnormal sound Oil recovery operation control is All indoor unit fans stop and the st oil recovery operation 1 hour display display display is heard from progress signal sent from remote control operation time after the power Operation recovery indoor unit ler is not accepted by indoor unit turned on 2nd oil recovery opera display LED tion and afterwards every 6 flashes hours operation time X Operation LED flashes 3 sec ON 1 sec OFF and repeats Error display Normal Err
141. ing to move them manually could result in improper operation in this case stop operation and restart The louvers should begin to operate properly again e During use of the Cooling and Dry modes do not set the UP DOWN air direction flaps in the position of 4 Compact wall mounted type amp for long periods of time since water vapor may condense near the outlet port and drops of water may drip from the air conditioner e When used in a room with infants chil dren elderly or sick persons the air direction and room temperature should be considered carefully when making settings The remote controller s display does not change B LARGE CEILING TYPE B CASSETTE TYPE CEILING WALL TYPE WALL MOUNTED TYPE Cooling amp Heating 04 10 Use the air direction adjustments within the ranges shown above The vertical airflow direction 15 set automatically as shown in accordance with the type of operation selected During Cooling mode Horizontal flow 1 During Heating mode Downward flow 4 During AUTO mode operation for the first minute after beginning operation airflow will be horizontal 7 the air direction cannot be adjusted during this period Horizontal Air Direction Adjustment This instructions are applicable to LARGE CEILING TIMER SETTWE FEAT FAN UNIVERSAL FLOOR CEILING WALL MOUNTED
142. isplay Central remote controller can be operated When contents of memory which is memorized in transmission adapter is 4 RE tee 2 Transmission adapter control printed circuit board is faulty sources near central remote controller 2 If error isn t cleared automatically check following 1 2 After RESET key on control printed circuit board of transmission adapter is pressed or power is turned on again 1 If error doesn t occur printed circuit board is normal Then remove noise sources near operation panel 2 If error occurs again remove noise sources and take measure with the following countermeasure No 2 2 Replace transmission adapter control printed circuit board 05 32 CONVERTOR UTR YSSA TROUBLESHOOTING E ERROR CONTENTS CAUSE COUNTERMEASURE No errors Initial setting 05 Circuit board 1 Error occurence condition 1 Effect of extraneous noise 1 After the SW104 button of network error 1 The signal synchronization convertor PCB is pressed for more between the network devices than five seconds or the power of is not normally performed network convertor is reset 2 Relevant operation 1 If error dosen t occur printed circuit Error code is displayed board is normal Please remove All control items are not noise sources near network convertor available 2 If error occurs again remove noise 3 Clearance sources and take
143. isplay display outdoor units occurred unit is directly sucked into the or same outdoor unit or into another error display outdoor unit Discharge Outdoor unit heat exchanger is Not enough space around Refer to the Design and Techni AO s blocked with foreign objects outdoor unit cal Data manual for the service 05 41 The surface of heat exchanger of outdoor unit was covered with dirty or other foreign objects space If there is an obstacle covering the surface of heat exchanger remove it LED display lt Become normal after the power 5 reset Indoor Outdoor Remote Symptom that Check method unit unit controller occur other Cause Error state check method Remarks Body PCB LED than title LED 1106 LCD Controlling Controlling Normal a Defrosting operation in progress Outdoor unit heat exchanger 1 Operation display LED display display display x 2 extremely cold 5 or less flashes 3 seconds ON Operation Defrosting 1 second OFF and repeats sees SED Operation X2 DEFROST message 9 1 appears on the display of the remote controller Error display Error display Error display Compressor is faulty Voltage AC380 415V is applied When one or two of three com Outdoor unit Compressor Outdoor to secondary side of magnetic pressors damaged recovery error display error unit error relay but compressor does not operationwill start automat
144. it communication PC board insertion is faulty 3 Printed circuit board is faulty 1 When power turned off then turned back on 1 If error doesn t occur PC board is normal Then remove noise sources near outdoor unit 2 If error occurs again remove noise sources and take measure with the following countermeasure No 2 2 Replace printed circuit boards with following procedure and check the operation 1 Replace Outdoor unit communication PC board 2 Replace Outdoor unit control PC board 1 When power is turned off and turned on again 1 If error doesn t occur printed circuit board is normal Then remove noise sources near outdoor unit 2 If error occurs again remove noise sources and take measure with the following countermeasure No 2 2 Check the insertion of outdoor unit communication printed circuit board 3 Replace printed circuit boards with the following procedure and check the operation 1 Replace outdoor unit communication printed circuit board 2 Replace outdoor unit control printed circuit board Indoor unit error Error occurs on indoor unit in same refrigerant system Indoor unit is faulty 05 27 See indoor unit troubleshooting B CENTRAL REMOTE CONTROLLER TROUBLESHOOTING ERROR CONTENTS CAUSE COUNTERMEASURE 00 No errors 02 Printed circuit 1 Error occurence condition 1 Effect of extraneous noise 1 After ACL key
145. ition of thermistor faulty temperature thermistor loosens or thermistor which is short or open is comes off error detected eee eee eee 2 Relevant operation 2 Blower temperature 2 Check resistance of blower Indoor unit is stopped Error is thermistor is faulty temperature thermistor If it s not displayed on LED of indoor unit normal replace thermistor and output to communication bus line 3 Clearance Thermistor detection is other than short or open 11 Drain abnormal 1 Error occurence condition 1 Drain hose is clogged 1 Clean drain hose Float SW is ON continuously for 3 minutes Relevant operation Indoor unit is stopped Error is displayed on LED of indoor unit and output to communication bus line Clearance Float SW is OFF 4 Float SW operation is faulty short 3 Check drain pump operation If it s faulty replace pump 4 If float SW is shorted replace SW 12 Room temperature abnormal Error occurence condition Room temperature thermistor detects higher than 60 C continuously for 30 minutes or longer during indoor unit operation Relevant operation Indoor unit is stopped Error is displayed on LED of indoor unit and output to communication bus line Clearance It s cleared by turning off the power 1 Connector connection is faulty Room temperature thermistor is faulty 1 Check if the connector of room tempe rature
146. l Normal Outdoor fan capacitor is faulty Check the capacity 11uF and Resistance between fan motor display display display resistance of the capacitor wires or Blue white 60 ohms error display Outdoor fan motor is faulty Voltage AC 220 240V is applied to White red 40 ohms High pres motor but motor does not rotate ed blue 20 ohms sure error Outdoor unit electronic When the electronic expansion When EEV1 and 2 are fully expansion valves EEV1 EEV2 valves EEV1 EEV2 are working closed during the cooling don t work correctly the temperature of operation the high pressure may Fully closed state don t open pipes which are before and after rise abnormally and the gas may during cooling operation the electronic expansion valve is become insufficient and the low clearly different pressure may drop Coil resistance red white red orange brown blue brown yellow 170 2109 Turn off the power source of PCB of the outdoor unit to initialize the electronic expansion valves for several times Put a 3 minute in terval between each initializations The electronic expansion valve may return to normal Abnormal sound Ball valve and 3 way valve are Check the positions of spindle Open the 3 way valve and ball is heard from not fully opened handel of the 3 way valve and valves fully indoor unit ball valve Normal Normal Normal Short circuit of air circulation of Air discharged from an outdoor display d
147. l the following conditions are satisfied 1 Discharge temperature protector 1 reset 2 Discharge temperature protector is not operated for 40 minutes or longer 1 Gas leak or lack of refrigerant 2 Outdoor fan motor is faulty 3 Discharge temperature sensor is faulty 4 Electronic expansion valve operation is faulty 5 Solenoid valve operation is faulty Check the gas leak and additional refrigerant amount and recharge suitable refrigerant 2 Check outdoor fan motor operation Remove the obstruction in wind path fan motor is faulty replace motor 3 Check if the wiring of discharge temperature sensor THp loosens or comes off and check the resistance 1 If it s abnormal replace sensor 4 Check operation and coil resistance of following electronic expansion valve If it s abnormal replace electronic expansion valve Coil resistance measurement points Red white red orange brown yellow brown blue 1 Outdoor unit electronic expansion valve EEV1 and EEV2 Coil resistance 192 19 ohms 2 Indoor units electronic expansion valve EEV Coil resistance 150 50 ohms 5 Check operation of following solenoid valves If operation is faulty replace solenoid valve Cooling operation 1 Outdoor unit solenoid valve SV1 2 RB unit solenoid valves SVB and SVS Heating operation 3 Outdoor units solenoid valves SV1 SV7 and SV8 4 RB unit solenoid valve SVD
148. lace control printed circuit board indoor unit 3 Replace standard wired remote controller printed circuit board 05 12 CAUSE COUNTERMEASURE 1F Transmission 1 Error occurrence condition 1 Effect of extraneous noise 1 When power is turned OFF error Communication between turned ON again indoor unit and outdoor unit 1 If error doesn t occur printed circuit cannot be performed for a board is normal Then remove noise certain time Sources near outdoor unit 2 Relevant operation 2 If error occurs again remove noise Current operation is sources and take measure with the continued following countermeasure No 2 4 Ermorisdisplapgedon standard wired remote Communication line is not 2 Check if communication line is controller and displayed on connected connection fault connected to all indoor unit Check if indoor unit LED or disconnection communication line is disconnected 3 Communication between Insertion for communication 3 Check the insertion of indoor unit indoor unit and outdoor unit Printed circuit board of communication printed circuit board is recovered indoor unit or outdoor unit and outdoor unit communication is faulty printed circuit board 4 Printed circuit board is faulty 4 1 If communication of some indoor units in same refrigerant system
149. m and display on the standard wired remote controller cannot be performed Other control methods are still possible 3 Clearance Transmission between standard wired remote controller and network convertor is performed normally convertor PCB is pressed for more than five seconds or the power of network convertor is reset 1 If error doesn t occur printed circuit board is normal Please remove noise sources near network convertor 2 If error occurs again remove noise sources and take measure with the following countermeasure 2 The remote controller line between network convertor and standard remote control ler is not connected or the connection is faulty 2 Check the remote controller line to find whether it has been disconnected connected faultily and has a wrong wiring or not 3 The setting of DIP SW 107 2 3 Check the setting of DIP SW 107 2 of network convertor wired RC validity invalidity setting is faulty of network convertor 4 The selection of standard re 4 Check whether the standard remote mote controller is faulty controller of VRF type is connected 5 The setting of DIP SW1 1 1 4 5 Check the setting of DIP SW 1 1 and of standard remote control ler Number of connected remote controllers is faulty DIP SW 1 4 of standard remote controllers 6 Standard wired remote controller printed circuit board or network convertor printed circuit board is
150. n 4 When the water level in the drain pan rises up and then the float switch functions Microcomputer stops the refrigerant circulation and indoor fan motor operation 2 Drain pump operates continuously for 3 minutes after the float switch is turned off Almost condensing water may be drained 5 When the float switch turns ON continuously for 3 minutes FAILURE INDICATION operates 6 When the float switch turns OFF within 3 minutes the unit starts cooling operation 04 15 Refrigerant R407C AIRSTAGE 5 TROUBLE SHOOTING 5 TROUBLESHOOTING 5 1 INDOOR UNIT SWING LAMP Orange SWING LAMP Orange TIMER LAMP Green OPERATION LAMP Red NTO SWING SWING TIMEROPERATIO Operation can be checked by lighting and flashing of the LED OPERATION TIMER SWING of the grille display section Perform judgment in accordance with the following e Test run When the air conditioner is operating in test run mode the OPERATION and TIMER lamps flash slowly at the same time e Error The OPERATION TIMER and SWING lamps operate as follows refer to 5 1 2 according to the error contents 5 1 1 NORMAL OPERATION DISPLAY OPERATING CONDITION INDICATOR LAMP FLASHING PATTERN Operation 1 0 sec k 1 0 sec lamp red OFF et iem ioe eel Timer lamp SN 1 0 sec 1 0 sec green Operation kA 1 0 se
151. n EEPROM occurs 2 Relevant operation 1 Relevant indoor unit is stopped 2 Error is displayed on LED of indoor unit Clearance Model information which is memorized on EEPROM is recovered 3 Model information is not memorized or erased because of some reasons Replace control printed circuit board of indoor unit 09 Room temperature thermistor error 1 Error occurrence condition The condition of thermistor which is short or open is detected Relevant operation Indoor unit stopped Error is displayed on LED of indoor unit and output to communication bus line Clearance Thermistor detection is other than short or open 1 Connector connection is faulty 2 Room Temperature thermistor is faulty 1 Check if the connector of Room temperature thermistor loosens or comes off Check the resistance of Room temperature thermistor If it s not normal replace the thermistor 0A Heat exchanger thermistor middle error 1 Error occurrence condition The condition of thermistor which is short or open is detected Relevant operation Indoor unit is stopped Error is displayed on LED of indoor unit and output to communication bus line Clearance Thermistor detection is other than short or open 0B Heat exchanger thermistor inlet error 1 Error occurrence condition The condition of thermistor which is short or open is detected Relevant operation E
152. n of the defrosting operation The defrosting operation starts when all the following conditions are satisfied e Outdoor unit operation mode is heating e Integrated time which any of the compressors is operating has reached 40 minutes or longer e The temperature of outlet of heat exchangers has become lower than the set temperature for starting a defrosting operation See 2 3 2 for the information on defrost temperature setting e When compressor s starts to operation from all compressors stopped state and has operated continuously for more than 6 10 min The defrosting operation can also be performed by setting the forced defrost operation DIP SW 1 4 from OFF to ON and keeping it at ON position for more than10 seconds To stop the defrosting operation set the DIP SW1 4 to OFF 2 Defrosting start restrictions When oil recovery operation is in progress or errors or protections except for some were generated Defrosting operation will not be performed even if the conditions mentioned above are satisfied 3 End condition of the defrosting operation When any of the following conditions is satisfied defrosting operation ends e Outdoor unit operation mode was switched to other than Heating e 20 minutes or longer have elapsed since defrosting operation started e Integration of compressor operation time after start of defrosting has exceeded 15 minutes e The error was generated except for some error conditions e Each heat e
153. n will operate at low speed If the room temperature subsequently changes the air conditioner will once again select the appropriate operation Heating Cooling to adjust the temperature to the set temperature 4 If the mode automatically selected by the unit is not satisfactor you can change the operating mode by press the MASTER CONTROL button to select the desired mode AUTO COOL gt DRY gt FAN HEAT During operation Start of operation Operating mode AUTO Ts Corrected setting temperatured is selected Tr Corrected room temperatured Detecting the room temperature lt gt lt gt Heating operation Refrigerant Circulating stopped Cooling operation 04 08 4 3 3 COOL POSITION When using the cooling mode set the temperature to a value lower than the current room temperature otherwise the indoor unit will not start the cooling operation and only the fan will rotate An example for COOLING TEMPERATURE CONTROL time chart Manual setting Ts 71 Temperature Ts Ts T2 gt 3Min Refrigerant i flow OFF 17 ae Opening of 100 EEV 0 ON Indoor fan OFF aE eee a CHR eee ae Ts Corrected setting temperature Ts T1 The thrshold temperature of start of refrigrant flow Tr Corrected room temperature T2 The thrshold temperature of stop of refrigrant flow 4
154. nce of sensor If it s abnormal replace sensor it s abnormal replace power relay voltage output on outdoor unit control printed circuit board If it s abnormal replace printed circuit board abnormal replace contactor and recharge suitable refrigerant due to affect of noise etc Operation 1 not affected Check High pressure error Motor protector is reset at 61 C 9 C replace compressor Check if the wiring of discharge temperature sensor loosens comes off And check the resistance of sensor If it s abnormal replace sensor it s abnormal replace power relay voltage output on outdoor unit control printed circuit board If it s abnormal replace printed circuit board abnormal replace contactor and recharge suitable refrigerant due to affect of noise etc Operation is not affected Check High pressure error Motor protector is reset at 61 9 replace compressor 05 17 CODE ERROR CONTENTS CAUSE COUNTERMEASURE OD Discharge 1 Error occurrence condition 1 Connector contact is faulty Check if the connector of discharge temperature Thermistor condition which temperature thermistor THp1 loosens thermistor 1 is short or open is detected or comes off error 2 Relevantoperation __ 1 Compressor 1 stopped 2 Discharge temperature Check the resistance of discharge 2 Error is
155. nce printed circuit board is faulty printed circuit board Error is cleared and central controller bcomes operable again 04 Memory error 1 Error occurrence condition 1 Effect of extraneouse noise 1 Initialize the setting again after initial 2 Relevant operation 1 Error occurs in normal 2 When error occurs in Control panel momory is failed or model infomation and remote controller group registration which are stored in memory is failed state Error and error code are displayed Only pressing key SW42 on control panel printed circuit boad is effective Other operations are ineffective initialize menu mode Error and error code display Only pressing SET key is effective Other operations are ineffective setting 1 If error doesn t occur printed circuit board is normal Then remove noise sources near operation panel 2 If error occurs again remove noise sources and take measurre with the following countermeasure NO 2 2 Control panel PC board is faulty 2 Replace control panel printed circuit board 3 Clearances 1 If error occurs in normal condition Key SW42 on control panel printed circuit board is pressed and the memory is cleared 2 If error occurs on the initial setting menu mode Set key is pressed and the memory is cleared 05 28 5 CAUSE COUNTERMEASURE 05 Node setting 1 Error occurrence condi
156. nds when the refrigerant circulation stops 3 The indoor fan will stop immediately when the indoor unit is stopped by pushing the stop button or by a setting of ON timer 4 When the refrigerant circulation is stopped due to a lower room temperature for more then 3 minutes the fan will rotate 2 minutes at intervals of 3 minutes 5 When the indoor unit just starts its operation or the operation mode is changed from other to DRY and the refrigerant circulation is stopped the fan will rotate for 1 minute and then it will operate according to the statement 4 4 FAN OPERATION NON STOP CLOCK GENIS The indoor fan rotates continuously at Lo speed Uds epo m 4 2 2 LOW MED AND HIGH POSITION indoor fan operates at fan speed set with the FAN CONTROL mode button gosse IF ZONE SET ENERGY 5 pP ON E 04 06 4 3 MASTER CONTROL 4 3 1 OPERATING MODE CONTROL Each operating mode is controlled as below Indoor fan motor Operates according to Operates according Operates according to the See the fan control the AIR FLOW MODE to the AIR FLOW setting and besides MODE setting frost prevention operation Defrost operation E valve Suction vo RB Unit AIR FLOW MODE setting page and besides Cold air prevention Drain pump Drain pump Turns ON OFF by the drain
157. ng SW3 4 OFF 02 17 SWITCH SETTING 1 SW4 setting Indoor unit address switch Set the indoor unit addresses INDOOR UNIT ADDRESS SWITCH Factory setting 0 Rotary SW Description Remarks Indoor unit Indoor unit address address SW 0 15 2 SW5 setting Refrigerant circuit address switch By combined with DIP switch 3 1 3 2 and 3 3 the refrigerant circuit address 0 99 can be set Please see 5 3 3 ADDRESS SETTING for the refrigerant address conversion table REFRIGERANT CIRCUIT ADDRESS SWITCH Factory setting SW 5 0 Rotary SW Description Remarks Refrigerant circuit About DIP switch 3 1 3 2 5 address SW and 3 3 see previous page B JUMPER WIRE Wireless remote controller custom code switch Limit the type of infrared control signal which the indoor unit is controlled in order to prevent misoperation of the unit due to the signal from other wirless remote controller Remote controller custom code switch Remote controller Factory setting Custom code Connect Connect Disconnect Connect Connect Disconnect ABCD OM Disconnect Disconnect Remote controller signal selector switch BEXTERNAL INPUT AND OUTPUT Su more than five seconds to start the code change Connector Input on Output Remarks 2 Press the or button to select the desired code B C D Y
158. ng order 1 Indoor fan does not operate normally 2 System does not cool or heat 4 Water leaking from indoor unit 5 Others 1 Indoor unit fan does not operate normally 3 Abnormal sound is heard from indoor unit LED displ SRY Symptoms that ae Gan Cause than title Error state check method Body PCB LED LCD LED 1106 No display Error No display Power is not supplied to indoor the voltage between power Voltage between terminals 1 and display unit supply terminals 1 and 2 of each 2 220 240V Transmission Circuit breaker is at OFF position indoor units line error X Power line is faulty Indoor unit is short circuiting The breaker falls immediately When short circuit occurred the The circuit to which voltage is after turning on the breaker of resistance between power supply applied when operation is short the indoor units The resistance terminals 1 and 2 of indoor unit circuiting leakage of electricity between the power terminal block approaches to zero Become normal after the power and the metal parts of any indoor units is almost zero Indoor unit is short circuiting When the indoor unit circuit If short circuited there is a elec The circuit to which voltage is u D tric part whose resistance applied when operation is short disconnecting by between two electrodes will circuiting leakage of electricity
159. ning of the relevant indoor as inlet pipe of the electronic of the indoor unit to initialize the door units unit is out of control open expansion valve of the relevant electronic expansion valves for except for the excessively during heating indoor unit is higher than those of several times Put a 3 minute in relevant indoor operation other indoor units terval between each initializations unit are insuffi The electronic expansion valve cient Electronic expansion valve The temperatuer of inlet pipe of may return to normal Abnormal sound opening of the relevant indoor the electronic expansion valve is heard from unit is out of control open do not become low indoor unit excessively when the indoor unit stop heating operation Discharge Up down left right swing Up down louver does not For the left right swing switching temperature is switching motor is faulty even when a voltage DC12V motor check the voltage across high is applied to the terminal of CN10 the terminal of CN11 for wall for wall mounted and ceiling wall mounted and ceiling wall type type CN6 Check the voltage CN7 across the terminal Discharge Liquid injection solenoid valve When a voltage AC220 240V is When SV1 is faulty the temperature is SV1 is faulty applied to the liquid discharge gas temperature may high injection solenoid valve outlet rise and a discharge temperature s Remakes pipe is not cold error may be
160. not the power supply cable connected to transmission and remote controller terminal Are the addresses set Ex Refrigerant circuit address indoor unit address remote controller address etc Have the all settings done on the PCB Is the ball valve opened 15 the pipe heat insulated which have the enough thickness Is the drain water flow correct 15 the power supplied to crank case heater for more than 12 hours before the start of test run at outdoor temperature of 20 C or below 01 01 1 2 CHECK ITEM DURING TEST RUN During the test run operation check the following items RB unit 1 50Hz 220 240V Outdoor unit He IT 3 4W 50Hz 380 415 2 im 1 50Hz 220 240V Central Wired remote controller remote controller unit Transmission line When the power supply turn on check the following items Outdoor unit LED 1 lights continuously if LED flushing it means error occurs check the eroor and solve the problem Indoor unit LED RED operation lamp amp GREEN timer lamp lights flush alternately Auto restart setting Invalidity All LEDs go off Auto restart setting Validity RC Timer display indicates When errors occur don t advance towards the following step before a complete settlement of all these errors o Start the Indoor unit test run from remote controller one by one Refer to 1 3 2 Check the
161. nsmission error 1 Error occurrence condition 1 Communication from each indoor units are cut off for a certain time 2 Relevant operation 1 If transmission error occurs after 90 seconds since Outdoor unit circuit board Effect of extraneous noise 1 When power is turned off and turned on again 1 If error doesn t occur printed circuit board is normal Then remove noise sources near outdoor unit 2 If error occurs again remove noise sources and take measures with the following countermeasure No 2 to 5 error 1 occurs all 2 compressors are stopped and error is displayed on LED of outdoor unit Communication line is not connected contact is faulty or disconnection 2 Check if communication line is connected to all indoor units Check if communication line is disconnected 2 If communication from all indoor units are cuts of fora 3 Indoor unit power is OFF 3 Check indoor units power supply certain time all compressors are stopped and error is displayed on LED of outdoor unit 3 Except a forementioned 4 Insertion fault for communication printed circuit board of indoor unit or outdoor unit 4 Check the insertion of indoor unit communication PC board and outdoor unit communication PC board operations only indoor units 5 that completes the commnunications are operated Error is displayed on LED of outdoor unit 3 Clearance 1 Communication with ind
162. o 2183 1076 561 307 176 135 105 92 4 81 8 72 6 64 5 57 5 51 3 Pipe tempera 575 325 35 375 40 50 60 90 100 120 ture C 45 8 41 1 36 9 33 1 29 8 269 181 125 88 63 46 34 20 140 160 180 ture Resistance value 12 0 8 05 3 Outdoor temperature thermistor Pipe tempera 50 30 20 10 75 50 25 25 50 80 10 ture 2 859 402 200 105 582 50 6 44 0 38 4 33 6 29 5 25 9 223 20 2 Pipe tempera ture 125 15 175 20 225 25 275 30 325 35 375 40 50 Ro Qe 17 9 15 8 141 125 11 2 10 0 9 0 80 72 65 59 53 36 Pipe tempera ture 60 70 80 Resistance value 25 18 13 07 03 7 2 2 PRESSURE SENSOR 1 Characteristics of pressure sensor V 5 5 23 5 O 1 0 1 75 3 5 MPa Pressure OUTPUT VOLTAGE OF THE PRESSURE SENSORS HP LP MPa 0 00 0 10 0 20 0 30 0 40 0 50 060 0 70 0 80 0 90 1 00 1 20 1 40 y d 0 00 1 11 1 21 1 33 1 45 1 56 1 68 1 80 1 91 2 01 2 13 2 36 2 60 a 1 60 1 80 2 00 2 20 240 2 60 2 80 3 00 3 20 3 40 3 50 ow 2 81 3 05 3 28 3 50 3 73 3 96 4 20 4 41 4 65 4 88 4 98
163. ol PCB Refer to section 5 2 Check the energized state AC220 240V of the heat ex changer 4 way valve and solen oid valves Check the temperature of the pipes connecting these valves When a 4 way valves or solenoid valves are faulty the high pres sure rises during the cooling op eration and the low pressure drops during the heating opera tion Coil resistance 1200 15008 Installed piping is unsuitable Liquid piping diameter is incorrect Check the indoor unit capacity and pipe diameter When the diameter is large a refrigerant rushing sound will be generated and when the diameter is small capacity will be insufficient 05 43 LED display sure error Indoor Outdoor Remote Symptom that Check method unit unit controller other Cause Error state check method Remarks Body PCB LED than tit LED 1106 LCD Normal Normal Normal System does Ball valve and 3 way valve Check the positions of spindle Open the 3 way valve and ball display display display not cool heat not fully opened handel of the 3 way valve and valves fully or ball valve error display High pres Controlling Controlling Normal Indoor unit not Oil recovery operation control is All indoor unit fans stop and 1st oil recovery operation 1 hour display display display operating in progress signal sent from remote control operation tim
164. oling operation stops the drain pump is operated Remains for 3 minutes A sound changed by the refrigerant flow may be made by operation of another indoor unit connected to the same outdoor unit A switching sound may be made at the start and after the end of defrosting operation and oil recovery operation This is due to expansion and contraction of resin parts by the temperature change during heating operation and oil recovery operation A sound is generated when the internal valve is switched at operation switching and at the start of defrosting operation and oil recovery operation The red and green lamps flash alternately in the operation stop state The red and green lamps flash simultaneously in the operation state The fan stops and the refrigerant passes through The red lamp flashes slowly The fan stops and the red lamp lights steadily The fan continues to operate and the red lamp lights steadily Same as normal At standby the red lamp flashes and the fan continues to operate At operation the heating operation is performed Buzzer buzzes 5 times and setting is not received Operation before setting continues Buzzer buzzes 5 times and setting is not received Operation before setting continues Buzzer buzzes 5 times and setting is not received Operation before setting continues When operation and indication other than the above occurs call the manager 05 46 TEST DEFROST Air
165. ontrol starts 3 Defrosting control starts 4 Mode is switched to other than Heat 03 11 Refrigerant R407C _AMIRSTAGE 4 INDOOR UNIT OPERATION 4 INDOOR UNIT OPERATION There are three timer modes OFF TIMER ON TIMER and WEEKLY TIMER 1 Set the clock time when the unit is in the stop mode only the Remote control button selected x CLOCK current time will be shown on the remote control unit display OFF i32 cl NEW lt Mm f TIMER 55 2 While adjusting the current clock time do not use other BB m remote control functions hiis om 3 Each time the TIMER button is pressed the remote control unit display will change in the order shown below NON STOP OFF gt ON WEEKLY lt OFF timer setting TIMER SET TIME MODE TEMPJDAY MASTER 99 CONTROL START STOP DAY OFF 9 _ ENERGY SAVE 1 OFF timer When the timer mode is set to OFF timer operation automatically stops when the set time has elapsed OFF ser 2 ON timer ON timer setting When the timer mode is set to ON operation automati cally starts when the set time has elapsed ON 3 WEEKLY timer Use the weekly timer to set operating times for each day of the User week Weekly Timer Features e Set different operating times for each day of the week e Set one or two operat
166. oor units is recovered 2 Main power is reset PC board is faulty 5 1 If transmission error occurs after Parallel communication error replace PC boards with following procedures and check the operation 1 Replace outdoor unit communication printed circuit board 2 Replace outdoor unit control printed circuit board 2 when some indoor units in same refrigerant system are operated replace printed circuit boards with following procedures and make sure the operation 1 Replace communication printed circuit board of indoor unit that occurs transmission error 2 Replace control printed circuit board of indoor unit that occurs transmission error 3 When an error occurs on all indoor units of the same refrigerant system and compressor does not operate replace PC boards with following procedures and make sure the operation 1 Replace outdoor unit communication PC board 2 Replace outdoor unit control PC board 3 Replace indoor unit communication PC board 4 Replace indoor unit control PC board 05 21 CODE ERROR CONTENTS ERROR CAUSE COUNTERMEASURE 21 Discharge temperature 1 error 1 Error occurrence condition Discharge temperature 1 rises to 130 C or higher for 40 minutes and compressor 1 is stopped twice or more 2 Relevant operation Error is displayed on LED of outdoor unit and output to communication bus line 3 Clearance When al
167. operation starts 1 Check the voltage display display display unit are faulty voltage AC220 240V is applied 2 Disconnect the plug from PCB to indoor unit control PCB CN6 the cases of wall mounted and ceilling wall type indoor units CN5 across terminals 3 4 but 3 minutes later a loud refrigerant rushing sound is generated from the RB unit and check the coil resistance Coil resistance 1 200 1 500 9 Bteween terminal 3 white and Indoor electronic expansion valve opening is faulty Coil resistance red white red orange brown blue brown yellow 100 2009 The cooling ca pacities of in door units except for the relevant indoor unit are insuffi cient Electronic expansion valve opening of the relevant indoor unit is out of control open excessively during cooling operation Frost may form on the surface of the heat ex changer of the relevant indoor unit The heating ca pacities of in door units except for the relevant indoor unit are insuffi cient Electronic expansion valve opening of the relevant indoor unit is out of control open excessively after stopping cooling operation Electronic expansion valve opening of the relevant indoor unit is out of control open exces sively during heating operation The area heat exchanger near the air diffuser is cool even after several minutes have elapsed since the relevant indoor unit was stopped
168. or error If CPU of central remote 1 If error is cleared automatically OUTPUT controller is initialized by printed circuit board is normal momentary power Then remove noise sources near interruption during the central remote controller operation setting or 2 If error isn t cleared automatically changing the setting is check following reset 1 2 After ACL key is pressed or power 2 Relevant operation is turned on again Error display Only error 1 If error doesn t occur printed circuit code display can be board is normal operated Other operations Then remove noise sources near are ineffective control panel 2 If error occurs again remove noise sources and take measure with the following countermeasure No 2 3 2 The power supply is shut 2 Check power supply voltage and down or power supply operate after turning on power voltage is abnomal 3 Printed circuitboardis 3 Replace printed circuit boards faulty with following procedures and check the operation Replace Transmission adapter control printed circuit board Replace Operation panel printed circuit board 22 Software 1 Error occurrence condition 1 Effect of extraneous noise 1 1 Check error continuity error Operation condition of 1 If error is cleared automatically printed INPUT indoor units which is circuit board is normal Then remove noise Clearance memorized in transmission adapter is abnormal Relevant operation Error d
169. or display Indoor fan capacitor is faulty Check the resistance value of Large ceiling type slim body cas display the capacitor sette type and ceiling wall type Indoor unit Indoor unit If normal the resistance will will inform the error Others don t fan error fan error Showa Warning kilohms 9 1 For large ceiling model or slim body cassette model perform ch eck by following procedures 1 Turn off the power of indoor unit Wait for several minutes Indoor fan motor is faulty Check the fan motor resistance 2 Disconnect the plug from PCB or voltage 3 Fully discharge the electricity before doing check 4 Check the resistance of capa citor for large ceiling or slim body cassette 1 2 of terminal CN3 5 Check the motor resistance For large ceiling model check re sistances 4 5 5 6 of CN4 For slim body cassette model check resistances 5 6 5to1 2 4 of CN4 2 For ceiling wall model check the voltages of CN3 V6 4 340 V V3 4 15 V V2 4 2 8 V Error display Error display Error display System does unit thermistor is faulty Measure the thermistor Refer to section 7 2 1 for the Thermistor Indoor unit Thermistor not cool heat resistance and compare it to temperature and thermistor error x error error X the ambient temperature resistance relationship When thermistor shorted or open error occurs Normal Normal Normal System does Indoor unit short
170. r 1 and 2 are substituted for compressor 3 Compressor recovery operation ORDINARY OPERATION RECOVERY OPERATION 6 2 6 Step 0 1 2 4 Step 5 Step 6 Step 7 Step 0 Step 1 Step 4 Step 4 Step 5 Step 5 Step 5 The character X represents the compressor s which was were stopped by a protection function or compressor error while the number s represent s capacity in horse power of the compressor s by which the recovery operation can be performed 03 02 3 2 HEAT EXCHANGE CAPACITY CONTROL The heat exchanger capacity and four way valve solenoid valve and electronic expansion valve operation states are shown below 1 Cooling Cooling main Solenoid valve Electronic expansion Used heat SV valve EEV exchanger HP Remarks 4 way valve 4WV 4WV2 4WV3 4 4 SV7 SV8 21416 OFF ON ON ON OFF Control pulse 0 pulse X Cooling 2HP X Cooling 4HP Cooling 6HP Cooling 8HP Control pulse 0 pulse Control pulse Control pulse Cooling 10HP Cooling 12HP Control pulse Control pulse OLX AO Control pulse X X Control pulse Control pulse 2 Heating Heating main Solenoid valve Electronic expansion Used heat 4 way valve 4WV SV valve EEV exchanger HP Remarks Pattern 4WV2 4WV3 4WV4 SV7 SV8 2146 OFF Control p
171. rae titus 06 05 6 3 PUMP DOWN METHOD a aie ate a LS 06 09 6 3 1 START AND STOP OF THE PUMP 06 09 6 3 2 A FLOW CHART OF PUMP 4 1 06 09 6 4 ICs E MURS RR AG ee ee ea le De ee teats 06 10 6 5 PRECAUTIONS FOR 040402011 11 06 11 6 6 PRECAUTIONS FOR SERVICING sahen ae 06 13 6 7 IN USE OF THE NEW REFRIGERANT 407 06 14 6 7 1 WHAT IS Ab hist Bis le dne rade tmd octo ct 06 14 6 7 2 CHARACTERISTICS OF R22 AND 407 06 14 6 7 3 DEFFERENCE FROM CONVENTIONAL MODEL R22 AND PRECAUTIONS 06 15 7 APPENDING DATA 1 UNIT 7 1 REFRIGERANT PIPE SYSTEM 1 07 01 7 2 CHARACTERISTICS OF SENSORS eese eene nennen 07 02 7 2 1 ao eu teu a 07 02 7 2 25 PRESSURE SENSOR FF reales 07 04 7 2 3 ELECTRIC EXPANSION 0044 00 4222 07 04 Zeh 07 04 925 OTHER SS nai uut ee een 07 05 7 3 WIRING DIAGRAM eh 07 06 7 3 1 INDOOR UNI puc ERR 07 06 7 59 2 SOUTDOOR UN onto uq aote etii oed 07 18 7 4 OUTDOOR INTERNAL 07 19 7 5
172. rom being covered with snow the outdoor fan is periodically operated by this switch even when the compressor is stopped SNOW FALLING PROTECTION SW Factory setting Snow falling protection fan mode Release Operate 02 19 2 3 Expansion valve initialization This switch initializes the number of pulses of the expansion valve when the outdoor unit is stopped ELECTRONIC EXPANSION VALVE INITIALIZATION Factory setting Initialization Release Operate 2 4 Forced oil recoverry operation Oil recovery is started manually by DIP SW 2 4 on the PCB FORCED OIL RECOVERY Factory setting Forced oil recovery Remarks Release Operate OFF ON and be kept at ON position P for more than 10 seconds 3 SW3 setting Dip SW3 1 3 2 3 3 and SW3 4 setting forbidden 4 SW4 setting 4 1 Defrost temperature setting SW The thershold temperature for starting a defrosting operation can be selected by setting up the switches DEFROST TEMPERATURE Factory setting Temperature Standard 4 2 SW4 3 SW4 4 setting forbidden 5 SW5 setting 5 1 Dip SW 5 1 SW5 2 SW5 4 setting forbidden 5 2 Base heater validity invalidity This switch sets the output of the base heater CN5 on the PCB BASE HEATER SWITCH Factory setting The base heater output turns ON at an outside temperature of 2 C or less dur
173. rror is displayed on LED of indoor unit Clearance Thermistor detection is other than short or open 1 Connector connection is faulty 2 Heat exchanger thermistor middle is faulty 1 Check if the connector of Heat exchanger thermistor middle loosens or comes off Check the resistance of heat exchanger thermistor middle If it s not normal replace thermistor 1 Connector connection is faulty 2 Heat exchanger thermistor inlet is faulty 1 Check if the connector of heat exchanger thermistor inlet loosens or comes off Check the resistance of heat exchanger thermistor inlet If it s not normal replace thermistor 0 Heat exchanger thermistor outlet error Error occurrence condition The condition of thermistor which is short or open is detected Relevant operation Error is displayed on LED of indoor unit Clearance Thermistor detection is other than short or open 1 Connector connection is faulty 2 Heat exchanger thermistor outlet is faulty 1 Check if the connector of heat exchanger thermistor outlet loosens or comes off Check the resistance of heat exchanger thermistor outlet If it s not normal replace thermistor 05 11 CODE ERROR CONTENTS CAUSE COUNTERMEASURE 0 1 Error occurrence condition 1 Connector connection is 1 Check if the connector of blower temperature The cond
174. rror is displayed on LED of outdoor unit and output to communication bus line 3 Clearance When all of following conditions satisfied 1 After 3 minutes have passed since compressor is stopped due to high pressure protection and condition of compressor restarting is satisfied high pressure SW is reset 2 High pressure protection is not operated for 40 minutes or longer High pressure SW setting value 3MPa OFF 2 4MPa ON 1 Ball valve is not opened completely 3 Outdoor heat exchanger is dirty or clogged with foreign matter 9 Electronic expansion valve operation is faulty 10 Solenoid valve operation is faulty 11 Overload 1 Open ball valve fully 3 Clean heat exchanger or remove foreign matter 4 Check outdoor fan motor operation Remove the obstruction in wind path If fan motor faulty replace motor 5 Check pressure using pressure gauge If pressure SW is faulty replace SW 8 Check indoor fan motor operation If fan motor is faulty replace motor 9 Check operation and coil resistance of following electronic expansion valve If it s faulty replace electronic expansion valve Coil resistance measurement points Red white red orange brown yellow brown blue 1 Outdoor unit electronic expansion valve EEV1 and EEV2 Coil resistance 192 19 ohms 2 Indoor units electronic expansion valve EEV Coil resistance 150 15 ohms 10 Check operation of following solenoid
175. rror occurs again remove noise sources and take measure with the following countermeasure No 2 2 Replace indoor unit control printed circuit board 1 Error occurrence condition When control printed circuit board of Indoor unit detects frequency which is not specified 2 Relevant operation 1 Relevant indoor unit is stopped not started 2 Error is displayed on LED of indoor unit or output to communication bus line Clearance Control printed circuit board of Indoor unit detects the specified frequency Power supply frequency is in the following range Lower than 45Hz or Higher than 65Hz 06 EEPROM access error 1 Error occurrence condition After indoor unit operation is started EEPROM cannot be accessed because of disturbance or device error Relevant operation Error is displayed on LED of indoor unit Clearance Access to EEPROM is EEPROM cannot be accessed because of disturbance device error etc performed correctly Check power supply frequency and apply the power whose frequency is within the specified frequency 1 Remove noise sources near indoor unit 2 Replace control printed circuit board of indoor unit 05 10 CODE ERROR ERROR CONTENTS CAUSE COUNTERMEASURE 07 EEPROM deletion error 1 Error occurrence condition After indoor unit operation is started error for model infor mation which is memorized o
176. rts When storing parts make such treatment as packing the parts in bags so as to avoid dusts water etc 6 Replacing parts When replacing parts be sure to check if the parts are suitable for the refrigerant model Although many refrigeration circuit parts have same appearance however their inside materials are different When changing compressor complete brazing work within 15 minutes after removing the compressor cap Because the moisture in air will enter the compressor and the new synthetic oil will absorb the moisture causing sludge When changing dryer complete brazing work within one hour after the package of dryer is opened because the desiccant starts to absorb the water content as soon as the package of dryer is opened If it absorbs too much water content when replacing it cannot absorb fully the water content in the refrigerating circuit 06 14 6 7 USE THE NEW REFRIGERANT R407C 6 7 1 WHAT IS CFC HCFC HFC HC Methane CFC 12 HCFC 22 HFC 407C Chloro Fluoro Carbon high ODP ozone depletion potential chemical compound containing chlorine ODP 0 6 1 0 HCFC Hydro Chloro Fluoro Carbon R22 low ODP chemical compound containing chlorine and hydrogen ODP 1 10 1150 of CFC HFC Hydro Fluoro Carbon R407C zero ODP new chemical compound in which is not containing chlorine ODP 0 6 7 2 CHARACTERISTICS OF R22 AND R407C HANDLING As in the case of R2
177. set earlier than the WEEKLY 1 settings The WEEKLY 1 and WEEKLY 2 time spans cannot overlap 04 04 Cancelling Selected Time Settings Press the START STOP button to stop the air conditioner and then proceed as follows 1 Carry out steps 1 to 3 of the Setting Up the Weekly Timer Operation procedure to select the day you want to edit Press the SET button to select the ON time that you want to cancel Be sure to select an ON time the upper time display Hold down the w side of the SET TIME button until the time display becomes blank Press the SET button The first OFF time setting WEEKLY 1 OFF time is deleted and replaced by a flashing blank pattern Press the SET button again This completes deletion of the WEEKLY 1 ON OFF settings The second ON time setting WEEKLY 2 ON time appears and flashes If you wish to delete other time settings repeat steps 2 through 5 Once the setting has been canceled hold down the SET button for 3 seconds The WEEKLY display flashes briefly and then the clock dis play appears To Change Selected Time Settings Press the START STOP button to stop the air conditioner and then proceed as follows 1 Carry out steps 1 to 3 of the Setting Up the Weekly Timer Operation procedure to select the day you want to edit Press the SET button to select the time that you want to change The selected setting flashes on the display Each pre
178. space on electrical wiring and drain processing 06 13 6 6 PRECAUTIONS FOR SERVICING 1 Countermeasure when the refrigerant leaks As R407C is zeotropic refrigerant the composition of the remaining refrigerant changes when the refrigerant leaks Therefore recharging refrigerant cannot be done Recover the remaining refrigerant and charge the specified amount of new refrigerant 2 Never use the existing refrigerant piping The existing piping used for R22 cannot be used for HFC series refrigerant as the conventional mineral oils are adhering to the piping If new synthetic oil is mixed with residual oil ex mineral type they may deteriorate and block the capillary tubes or cause a compressor failure Therefore basically use a brand new pipe However in the case of the existing piping buried in the wall and replacement with new piping is difficult wash the piping fully with detergent It is desirable that the amount of residual oil in connection pipes is less than 40mg 10m 3 Replacement of refrigeration circuit parts As refrigerant circuit parts are basically different from conventional parts be sure to use the parts suitable for the refrigerant when replacing For R407C the materials should being reviewed 4 Check not to charge with wrong refrigerant As there are air conditioner models using different refrigerant such as R22 R407C make sure not to use wrong refrigerant when installing and servicing 5 Storage of pa
179. ss moves you to the next setting for the selected day as follows WEEKLY 1 WEEKLY 1 WEEKLY 2 WEEKLY 2 ON OFF ON OFF Press the SET TIME button to change the time setting Press the SET button The new setting overwrites the previous setting Once the setting has been canceled hold down the SET button for 3 seconds The WEEKLY display flashes briefly and then the clock dis play appears NOTES In the following cases cancel the set time prior to making the required amendments 1 If you want to change the ON time to a time that is later than the currently set OFF time ON OFF Example Clearing the WEEKLY 1 ON OFF times for day 4 Thursday WEEKLY 1 IN i mare 7 TIMER zen LILI OFF 1 IN TIMER MODE CLOCK ADJUST SET TIME 68 MASTER CONTROL gt ENERGY SAVE DAY OFF o START STOP 2 TIMER MODE CLOCK ADJUST SET TIME v TEMP DAY v2 FAN CONTROL CONTROL ENERGY SAVE ZONE OSET DAY OFF START STOP Example Changing the WEEKLY 2 ON setting for day 5 Friday from 14 00 to 15 30 2
180. ssor If it s faulty replace compressor 05 16 CAUSE COUNTERMEASURE 0 Compressor 2 Error occurrence condition After thirty minutes have elapsed since compressor 2 starts to work discharge temperature 2 does not reach to outdoor temperature plus 10 C 2 Relevant operation 1 After compressor error 2 Error is displayed on LED of occurs compressor recovery operation is performed However if defrosting control or oil recovery operation is performed compressor recovery is not operated outdoor unit and output to communication bus line 3 Clearance When 2 hours have elapsed after error occurrence Counting of 2 hour counter starts if error occurs on any compressors Error is cleared by turning power off 1 Discharge temperature sensor THp is faulty Compressor power relay 2 is faulty Outdoor unit control printed circuit board is faulty faulty After 2 and half an hours have elapsed since error is displayed error detection is performed again and error is not displayed Compressor motor protector is operated Compressor is faulty 0B Compressor 3 error Error occurrence condition After thirty minutes have elapsed since compressor 3 starts to work discharge temperature 3 does not reach to outdoor temperature plus 10 C 2 Relevant operation 1 Af
181. stor 3 loosens or comes off error 2 Heat exchanger outlet 2 Check the resistance of heat thermistor is faulty exchanger outlet thermistor THHos If it s abnormal replace thermistor 17 Suction 1 Connector contact is faulty 1 Check if the connector of suction thermistor error temperature thermistor THs _ ___ _ _ _ ____ losensorcomesof _______ 2 Suction temperature 2 Check the resistance of suction thermistor THs is faulty temperature thermistor THs If it s abnormal replace thermistor 05 19 CODE ERROR CONTENTS ERROR CAUSE COUNTERMEASURE 19 Discharge pressure sensor error 1A Liquid pressure sensor error 1 Error occurrence condition 1 Voltage output from output remains under 0 8V for 3 minutes or longer However detection isn t performed for 3 minutes after power is applied to outdoor unit 2 Output sensor detection value is 3 46MPa or higher 2 Relevant operation 2 Error is displayed on LED of outdoor unit and output to communication bus line 3 Clearance Output voltage from pressure sensor returns within 1 5V Discharge pressure sensor PH is faulty Replace discharge pressure sensor 1 All compressors are stopped Liquid line pressure sensor Pm is faulty Replace liquid line pressure sensor Pm 05 20 ERROR CODE ERROR CONTENTS ERROR CAUSE COUNTERMEASURE 1F Tra
182. struction in wind path If fan motor is faulty replace motor 3 Check if the wiring of discharge temperature sensor loosens or comes off and check the resistance of THoa If it s abnormal replace sensor Check operation and coil resistance of following electronic expansion valve If it s abnormal replace electronic expansion valve Coil resistance measurement points Red white red orange brown yellow brown blue 1 Outdoor unit electronic expansion valve EEV1 and EEV2 Coil resistance 192 19 ohms 2 Indoor units electronic expansion valve EEV Coil resistance 150 50 ohms 5 Check operation of following solenoid valves If operation faulty replace solenoid valve Cooling operation 1 Outdoor unit solenoid valve SV1 2 RB unit solenoid valves SVs Heating operation 3 Outdoor units solenoid valves SV1 SV7 and SV8 4 RB unit solenoid SVo Heat recovery operation 1 2 3 4 05 24 CODE ERROR CONTENTS ERROR CAUSE COUNTERMEASURE 24 High pressure error 1 Error occurrence condition When any of following conditions is satisfied 1 Compressor is stopped twice or more due to high pressure protection within 40 minutes 2 After 3 minutes have passed since compressor is stopped due to high pressur protection and condition of compresser restarting is satisfied high pressure SW is operated 2 Relevant operation E
183. ter compressor error occurs compressor recovery operation is performed However if defrosting control or oil recovery operation is performed compressor recovery is not operated 2 Error is displayed on LED of outdoor unit and output to communication bus line 3 Clearance When 2 hours has elapsed after error occurrence Counting of 2 hour counter starts if error occurs on any compressors Error is cleared by turning power off 1 Discharge temperature sensor is faulty faulty Outdoor unit control printed circuit board is faulty faulty After 2 and half an hours have elapsed since error is displayed error detection is performed again and error is not displayed Compressor motor protector is operated 8 Compressor is faulty Check if the wiring of discharge Check compressor power relay 2 If Check CN25 compressor 2 12V Check magnetic contactor 2 If it s Check additional refrigerant amount Temporary data transmission trouble Compressor overload operation Check compressor If it s faulty 1 Check compressor power relay 3 If Check CN26 compressor 3 12V Check magnetic contactor 3 If it s Check additional refrigerant amount Temporary data transmission trouble Compressor overload operation Check compressor If it s faulty temperature sensor 2 loosens or comes off And check the resista
184. the self diagnosis check An error code will be displayed display area 3 Press the and the buttons again for more than three seconds to end the self diagnosis check Error code history can be displayed Please refer to Installation Instruction Sheet of the remote controller 05 05 Error code displayed on wired or simple remote controller Error Code Error contents No error Model information abnormal Power supply frequency abnormal EEPROM access error EEPROM deletion error Room temperature themistor error Indoor unit heat exchanger themistor middle error Indoor unit heat exchanger themistor inlet error Indoor unit heat exchanger themistor outlet error Blower temperature themistor error Drain abnormal Room temperature abnormal Indoor unit fan error Transmission error Node setting error Parallel communication error Outdoor unit error 5 3 3 CENTRAL REMOTE CONTROLLER If the 9510 and the number for the central control number 100 flash during operation there is error at the relevant remote control group Start the error monitor identify the error and remove the cause SUN MON TUE WED THU FRI SAT CENTRAL CONTROL Z
185. thermistor loosens or comes off 2 Check resistance of room temperature thermistor If it s normal replace thermistor 13 Indoor unit fan error Error occurr condition Fan speed feedback of large ceiling type slim body cassette type and ceiling wall type is lower than 1 3 of target speed Relevant operation Indoor fan is stopped error is displayed on LED of indoor unit and out put to communica tion bus line Clearance It s cleared by turning off the power 18 Standard wired R C communi cation error 1 2 1 Error occurrence condition Communication can not be performed between standard wired remote controller and indoor unit or between indoor units in same remote controller group for a certain time Relevant operation Error is displayed on LED of indoor unit Clearrance Standard wired remote controller communication is recovered 1 Indoor fan motor lead wire connection is faulty 2 Power supply voltage abnormal 1 Communication line is not connected connection fault or disconnection Indoor unit control printed circuit board is faulty 3 Standard wired remote controller printed circuit board is faulty 1 Check the wiring of indoor fan motor lead wire 2 Check if rated power supply voltage is applied 1 Check if communication line is connected to each indoor unit Check if communication line is disconnected or loosen 2 Rep
186. ting SRAM Battery OFF ON At the time of shipment the battery is turned off to avoid electricity consumption Be sure to set this switch to ON 1 8 SW42 Initial setting button This switch is used when initializing the central remote controller 02 25 2 3 6 NETWORK CONVERTOR 1 Network convertor UTR YSSA 1 Dip SW103 1 2 3 4 setting Set Dip SW103 1 2 3 4 according to indoor unit type and remote _ Number controller packaged together with the unit type You can also set DIP SW103 1 2 3 4 using the remote controller number that is shown on the rear surface of the remote controller Instead of using the remote controller that was packaged together with the unit a VRF type remote controller must be used to connected to network Rear View Indoor unit model type and remote controller type Factory setting DIP SW103 2 3 4 Indoor unit type RC type RC number EZ 099DHSE EZ 000DHSE EZ 0001HSE OFF OFF Heat pump of single spilt type With weekly timer EZ 000GHSE EZ 00004HSE EZ 00005HSE EZ 0015HSE EZ 0019HSE OFF ON Heat pump of big multi type With weekly timer EZ 0994HSE EZ 000EHSE ON OFF Heat pump of single spilt type Without weekly timer EZ 09503HSE EZ 0950DHSE OFF Cooling only of single spilt type With weekly timer EN EC CUT WE TASE d OFF Cooling only of big multi type With weekly timer EZ 09906W
187. tion 1 Effect of extraneous noise 1 After ACL key is pressed or power is error Control panel printed circuit turned on again board isn t initialized 1 If error doesn t occur printed circuit normally board is normal Then remove noise 2 Relevant operation sources near operation panel Error display Only error 2 If error occurs again remove noise display operation can be sources and take measure with the performed Other operations following coutermeasure No 2 are ineffective 2 Printed circuit board is 2 Replace printed circuit boards with 3 Clearance faulty following procedure and confirm the Operation panel printed operation circuit board initialization Replace Transmission adapter operation is performed control printed circuit board normally Replace Transmisson adapter communication printed circuit board 3 Operation panel printed cicuit board 06 Parallel 1 Error occurrence condition 1 Effect of extraneous noise 1 After RESET key on control printed communication error Communication between transmission adapter control printed circuit board and transmission adapter communication printed circuit board is not performed normally 2 Relevant operation 1 Error indication Central Remote operation is available 2 If error is kept to detect for a while after error occurs transmission error 1F is output 3 Clearance The communication between the control printed circuit board and communi
188. tops However the operation continues in same operating mode 2 When the test run signal is transmitted from the outdoor unit 1 Whether state of the indoor unit operates or stops All units in the same refrigerant system will start to conduct a test run in accordance with the operation mode set by DIP SW 1 1 and SW 1 2 of outdoor unit see 1 1 2 Test running initialization is shown below Operating Mode Cooling Heating era Vertical Air Direction Panel Position 1 Position 4 Horizontal Air Direction Panel Position 3 Position 3 x Please refer to 4 4 LOUVER CONTROL in this manual and find the definition for air direction panel position 01 05 Refrigerant R407C AIRSTAGE 2 FUNCTION OF PRINTED CIRCUIT BOARD 2 FUNCTION PRINTED CIRCUIT BOARD 2 1 PCB LAYOUTS CN10 CN16 2 1 1 INDOOR UNIT CONTROL CIRCUIT BOARD Indoor unit Forbidden Forbidden Room temp correct coefficient of heating 1 Room temp correct coefficient of heating 2 Room temp correct coefficient of cooling Forbidden Filter check validity invalidity Auto restart validity invalidity Forbidden Indoor unit fan speed switch 1 Forbidden Indoor unit fan speed switch 2 Forbidden Indoor unit fan speed switch 3 Extermal input select edge pulse Forbidden Indoor unit model code Forbidden Indoor unit model code Forbidden Indoor unit model code
189. troller u ON OFF DIP SW1 2 OFF 1 unit wired simple ON multiple unit Remote controller OFF Master switch 2 ON OFF DIP SW1 4 ON Slave Central Central remote 9 remote controller address 0 15 Initial setting controller 1 For compact wall mounted type indoor unit refer to 6 2 2 06 02 e Refrigerant circuit address conversion table Outdoor unit Rotary switch SW 8 Factory setting 0 Rotary switch SW 9 Factory setting 0 Indoor Unit Rotary switch SW 8 Factory setting 0 Rotary switch SW 9 Factory setting 0 In the case of a multiple refrigerant system each refrigerant system outdoor unit and indoor unit must be set an exclusive refrigerant circuit address Please use the rotary switches SW8 SW9 to set the address A conversion table of refrigerant circuit address and rotary switch setting is shown in the table below Do not use a nonexistent switch setting combination Example When SW 9 is set to 1 and SW 8 is set to 14 the refrigerant circuit address will be 30 Refrigerant Rotary Refrigerant Rotary Refrigerant Rotary Refrigerant Rotary Refrigerant circuit Switch setting circuit Switch setting circuit Switch setting circuit Switch setting Circuit address address address address address JN IO Pr 0 3 1 3 2 3 3 3 4 4 5 4 6 4 7 4 8 4 9 4 A 4 Lew Se
190. ulse 0 pulse Heating 2HP ON ON ON ON Control pulse 0 pulse Heating 4HP ON ON ON OFF Control pulse Heating 6HP ON ON ON OFF Control pulse Control pulse Heating 8HP ON ON ON ON Control pulse Control pulse Heating 10HP ON ON ON ON Control pulse Control pulse Heating 12HP 3 Stop and same capacity operation Solenoid valve Electronic expansion Used heat 4 way valve 4WV SV valve EEV exchanger HP Remarks 4WV2 4WV3 4WV4 SV7 SV8 EEV1 EEV2 6 OFF OFF OFF OFF OFF 280 pulse 280 pulse x Stop ON ON ON OFF OFF 0 pulse 0 pulse capacity 03 03 3 3 OUTDOOR MOTOR CONTROL 1 ON OFF The outdoor fan motor is turned on with the compressor start and turned off with the compressor stop except for the following cases Also when the operating mode of the outdoor unit is changed fan speed will be controlled under new operating mode condition When the defrosting operation is performed When the deicing operation is performed When the same capacity mode is performed When the overload protection operation during heating operation is performed 2 Fan Speed The outdoor fan motor has the following five steps of speed in addition to Stop FAN SPEED FAN 1 FAN 2 Intermittent operation Fan 1 rotates 20 secounds at intervals of 50 seconds Fan 2 stops all the time 03 04 3 Fan Speed Switching a Fan speed
191. uni Communi PCB is faulty or indoor unit is repeated reset during no communicating cation cation cation a communication error is period the communication error error error generated PCB or communication line may be abnormal No display Cannot be No display The fan ofthe Indoor unit control PCB is faulty The symptom has many When the PCB or the connection or error specified or error indoor unit branches depending on the wiring is faulty problem can display display does not rotate error contents and there is often be solved by replacing cannot be cannot be bnormal sound effective check method the PCB specified specified 5 heard from indoor unit Cannot be Nodisplay Cannot be The fan ofthe Outdoor unit control PCB is faulty The symptom has many When the PCB or the connection specified error display specified indoor unit branches depending on the wiring is faulty problem can cannot be loes not rotate error contents and there is no often be solved by replacing specified bnormal sound effective check method the PCB 05 42 3 Abnormal sound is heard from the indoor unit LED display Indoor Outdoor Remote Symptom that unit unit controller can occur other Cause Check method Remarks Body PCB LED LCD than title Error state check method LED 1106 Normal Normal Normal Solenoid valves SVB1 2 of When heating
192. valent to setting it at Low 04 09 4 4 LOUVER CONTROL 1 ADJUSTING THE DIRECTION OF AIR CIRCULATION Instructions relating to heating are applicable only to heat pump type outdoor unit MODE CLOCK ADJUST FAN CONTROL v TEMPJDAY m MASTER CONTROL Begin air conditioner operation before performing this procedure o E o ZONE OSET o ENERGY SAVE DAY OFF g START STOP Vertical Air Direction Adjustment m This instructions are applicable to LARGE CEILING TYPE UNIVERSAL FLOOR CEILING TYPE CASSETTE TYPE WALL MOUNTED TYPE COMPACT WALL MOUNTED TYPE and CEILING WALL TYPE Press the VERTICAL AIR FLOW DIRECTION SET button Each time the button is pressed the air direction will change as Example When set to vertical air direction follows expept for compact wall mounted type indoor units operating DANGER under cooling mode Never place fingers or foreign objects inside the gt gt Da __ ee outlet ports since the internal opertes at high speed and could cause personal injury For compact wall mounted type indoor units operating under cooling mode e Always use the remote control umit s ccr AIR FLOW DIRECTION button to adjust the UP DOWN air direction flaps or RIGHT LEFT air direction louvers At tempt
193. valves operation faulty replace solenoid valve Cooling operation 1 Outdoor unit solenoid valve SVs 2 RB unit solenoid valve SVs Heating operation 3 Outdoor units solenoid valves SV2 SV7 and SV8 4 RB unit solenoid valve SVp Heat recovery operation 1 2 3 4 11 Clear the cause of overload e g Caused by indoor unit or outdoor unit installation 05 25 CODE ERROR CONTENTS ERROR CAUSE COUNTERMEARSURE 27 Oilrecovery Error occurrence condition 1 Oil recovery solenoid valve 1 Check operation of following solenoid error Oil is judged under oil is faulty valves If operation is faulty replace sensor L level Oil recovery operation is performed consecutively 3 times or more Relevant operation Error is displayed on LED of outdoor unit Clearance Oil rises over oil sensor L level 2 Connector connection is faulty solenoid valve Compressor 1 solenoid valve SV3 Compressor 2 solenoid valve 4 Compressor 3 solenoid valve SV5 Central oil return solenoid SV6 _ 2 Check if the wiring or connector of solenoid valves loosen or come off 05 26 5 CODE ERROR 28 Pump down error 1 Error occurrence condition Six minutes have elapsed since pump down is performed or discharge pressure sensor is 3MPa or higher 2 Relevant operation 1 All compressors and outdoor fans
194. w pressure Check the energized state will fall during the heating AC220 240V of the heat ex operation changer 4 way valve and solen Coil resistance 1200 1500 Q oid valves Check the temperature of the pipes connecting these valves High pressure Refrigerant additional charge Check the model and model code When gas is insufficient rises or falls is unsuitable of indoor units liquid piping dia the capacity drops and when abnormally meter pipe length and calculation gas is excessive the high for additional charge Refer pressure rises abnormally to section 6 1 Error display Error display Error display E Indoor outdoor unit When one of communication Short Resistance Outdoor Communi Outdoor communication line faulty terminal board Transmission circuit measurement unit error X cation error unit error terminals 1 2 of the indoor units is shorted the resistance between1 and 2 of communi X Become normal after the power cation terminal board Transmi ssion of all the indoor units Indoor Indoor Indoor Indoor become zero unit unit unit unit Normal Normal Normal Refrigerant is seriously insuffici When the number of operating When the gas insufficiency be display display display ent indoor units was changed come seriously the high or the discharge temperature of the pressure drops and error display indoor units does not become the discharge temperature Compressor low or high increases a
195. work convertor 2 If error occurs again remove noise sources and take measure with the following countermeasure 05 34 ERROR CODE ERROR CONTENTS CAUSE COUNTERMEASURE 1F Transmission 3 Clearance 1 Effect of extraneous noise 1 3 After the power of VRF system is error with Transmission between reset VRF system VRF system and network 1 If error dosen t occur printed circuit convertor is performed board is normal Please remove normally noise sources near VRF system 2 If error occurs again remove noise sources and take measure with the following countermeasure 2 Network convertor printed 2 Replace the network convertor circuit board is faulty printed circuit board 3 Printed circuit board of 3 Replace the printed circuit boards of device of VRF system device of VRF system is faulty 21 Software error 1 Error occurence condition 1 Effect of extraneous noise 1 1 Check the continuity of error An incorrect control is 1 If error is cleared automatically performed by printed circuit board is normal microcomputer program Please remove noise sources near 2 Relevant operation network convertor Error code is displayed 2 If error isn t cleared automatically All control items are not check following available 1 2 After the SW104 button of network 3 Clearance convertor PCB is pressed for more Error is cleared when the than five seconds or the power of network convertor return to
196. xchanger outlet temperature has reached defrosting end heat exchanger temperature 10 C or higher 3 Others During the defrosting operation the fans of indoor units stop appears on the display of wired and central remote controller and 6 appears on the simple remote controller The operation indicators LED of the indoor units flash slowly 03 08 3 8 OIL RETURN CONTROL 1 Two kinds of oil return control There are two oil return controls one is the individual oil return control and the other one is centralized oil return control When any of the solenoid valves opens the oil return is performed OIL SEPARATOR OIL SEPARATOR 2 Oil return solenoid valves SV6 Solenoid valve Application Individual oil return Solenoid valve SV3 Compressor 1 control 4 Compressor 2 5 Compressor 3 Central oil return control SV6 Compressor 1 2 3 3 Individual oil return control When a compressor operates continuously for 1 minute or longer and any of the following conditions is satisfied the solenoid valve corresponding to the compressor opens for 10 seconds to return the oil accumulated in the oil separator to the compressor 1 The integrated operating time of the compressor has reached 15 minutes or longer 2 The compressor is stopped 4 Central oil return control When any of the following conditions is satisfied the solenoid valve SV6 opens on and central oil return control begins 1 One or

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