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technical & service manual - Aire Acondicionado Mitsubishi Electric

1. SUZ KA71VA 1 TH Defrost thermistor RT61 Ambient temperature thermistor RT65 Outdoor heat exchanger temperature thermistor RT68 100 90 S A 2 a 8 M 0
2. 1 4 1 3 Indoor intake air Wet bulb temperature C 1 2 261 24 22 20 1 1 18 1 0 0 9 10 5 0 5 10 15 20 25 30 35 40 4546 Outdoor intake air Dry bulb temperature Total input cooling 1 4 1 3 Indoor intake air Wet bulb temperature C 1 2 267 24 22 20 1 1 18 1 0 0 9 10 5 0 5 10 15 20 25 30 35 40 4546 Outdoor intake air Dry bulb temperature 14 5 Indoor intake air Wet bulb 1 3 temperature C 5 9 12 26 v 8 1 1 24 1 0 22 0 9 20 18 15 10 5 0 5 10 15 20 25 30 35 40 4546 Outdoor intake air Dry bulb temperature 34 Input correction factors Total input cooling 1 4 1 3 intake air Wet bulb temperature X 1 2 26 H22 120 1 1 418 1 0 0 9 15 10 5 0 5 10 15 20 25 30 35 40 4546 Outdoor intake air Dry bulb temperature Indoor air Dry bulb temperature Heating capacity 25 2 22 7 24 5 25 3 13 15 20 23 2 20 9 22 6 23 3
3. op lt 5 Outdoor intake air Dry bulb temperature Outdoor intake air Dry bulb temperature Bs 55 5 Ns Cooling capacity Total input cooling 10 8 14 1 4 5 Indoor intake air Wet bulb 10 0 13 temperature C 5 13 Indoor intake air Wet bulb temperature C A amp 512 12 9 2 t 26 5 1 26 24 22 E 20 8 5 1 1 247 14 18 7 7 9 10 5 1 0 5 2 6 9 U 0 9 20 0 9 18 15 10 5 0 5 10 15 20 25 30 35 40 4546 lt 15 10 5 0 5 10 15 20 25 30 35 40 4546 g Outdoor intake air Dry bulb temperature C Outdoor intake air Dry bulb temperature 5 5 NE 2 I OC322G 30 SUZ KA25VA H Correction of Cooling capacity Capacity correction factors 100 150 Hz The operational frequency of compressor SUZ KA35VA H Correction of Cooling capacity in a Capacity correction factors e o 50 100 150 Hz The operational frequency of compressor SUZ KA50VA Correction of Cooling capacity 1 5 2 o S 5 1 0 20 5 G G 0 0 50 100 150 Hz The operational frequency of compressor Heating capacity Total input heating
4. Bum 21399Je epis JOOPUI BU 1noqv S31ON JAVN JOSNAS 3IANVN lO8NAS 3INVN JO8NAS 47264 8914 29141914 991 s Z 6NO _ ANN A AIA ANN amp cO pac 5 weew 9 ji Suse si Fel soap PE cs S6ZNO 82 vieleli keh keh loher n Ein L99NO 99NO 189NO y 2M MS Q LOLNO ZOLNO L8ZNO 2 JOMINOO S L CIL 2 1919 L G c ll 9giNOMIO3H THM e E E us uu a ON m ERI Es x ZZ SNILO3NNOCO LINN x RRRS s sonio Gao d NOU yeas E 2 2 5 07 edu BRES l _ 2 2 p pa quvog od a mal s 2 2 79 5 15 Lil le uin Oral LO6BNO om jm tono S ei Niz LN 5 7 INH 4 19 1919 cio 3x9 177 eer t a in lt VOHN Z L hl ot Q mia 17 1 IMMA IP 6 S CN lg a 000 n JN Ol O 77 I S ig l gt mmc i Vox jou L 1 Z o 6 e e 2 uso 5 17 Hav ZH0S N porc dz Ge ccu dM CELL ll Dui eM der say En 5 8 REFRIGERANT SYSTEM DIAGRAM SUZ KA25VA TH SUZ KA25VAH TH OUTDOOR UNIT
5. SUZ KA25VA H Correction of Cooling total input 2 0 e a Input correction factors 2 ej 0 0 o 50 100 150 Hz The operational frequencv of compressor SUZ KA35VA H Correction of Cooling total input o 1 0 E 5 80 5 t 0 0 0 50 100 150 Hz The operational frequencv of compressor SUZ KASOVA Correction of Cooling total input o e a Input correction factors 0 0 0 50 100 150 Hz The operational frequency of compressor SUZ KA25VA H Correction of Heating capacity N e a Capacity correction factors e o o 50 100 150 Hz The operational frequency of compressor SUZ KA35VA H Correction of Heating capacity 0 Capacity correction factors o 100 150 Hz The operational frequency of compressor SUZ KASOVA Correction of Heating capacitv Capacitv correction factors 100 The operational frequencv of compressor 150 Hz OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT 20 8 23 9 282 13 15 1 3 20 E N 19 2 22 4 26 0 QU RIS 26 1 2 Ture C M amp 9 47 6 20 2 4 23 9 8 11 e teme 29 ES Ss 8 11 13 25 16 0 18442174 10 5 wave FEE o 28 144 16 5 19 5 os o S gt 5 os HS 25 8 ex ERE Bow Z S 128 14741744
6. SJOQWAS 404 AJUO sJojyonpuoo 1eddoo YOLSINYSHL 9914 JINGOW YAMOd LNASITISLNI Z 60I Wdl AATWA NOISNVdX3 31 YOLSINYSHL 3801Ve3dW3 39IA3Q HIMOd LNASITISLNI 10821 MOO 3ATVA SNISH3A3H VSL YOLSINYSHL JO HOSIQ 2914 AOSZ1VSL EL 3504 1064 1084 AV I38 V9X 9x YOLSINWYAHL LSO833Q 1914 A0SZTVS I L 3514 124 HINHOAJSNVHAL L091 HOLSIHVA YOHN COHN AOSZ1VOZL ASNA 194 YOLSISNVYL 44MOd ONIHOLIMS 12881 YOLOW YOOALNO JN H38H0S8V JDUNS 52078 IVNINHIL cal igL HOSSJHANOD OIN FINGOW 9980 980 YOLSISSY NILINIT LNIYYNO VP9H MOOD OWO 91791 YOLOVdVO DNIHLOOWS 2699 869 VC YOLSISAY 9NILO313Q LN388029 Le84 L94 YOLOVAY L91 5 LNIYYNO 181191911919 rr 3INVN lO8WAS 3INVN 5 3INVN voly 9141918 9914 ab H HE SIvIETzD zD biel ell EE LEGNO 2663 Od HILHJANI CHONO W9NO 0890 L09N
7. Sins SNS GE PSU GS GU GU GS GN gt MOEN 7 A h PA 2 4 ON b 5 5 GSGSGSGN OC322G 114 SUZ KA25VA TH SUZ KA35VA TH SUZ KA25VAH TH SUZ KA35VAH TH 14 2 OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS Part number that is circled is not shown in the illustration Symbol Q ty unit Part Name in Wiring SUZ SUZ Remarks Di KA25VAH KA35VA iu TH CABINET 1 1 GRILLE 1 1 PROPELLER FAN 1 1 BASE 1 BASE COMPRESSOR KNB073FDVH COMPRESSOR KNB092FCAH COMPRESSOR RUBBER SET 3RUBBERS SET STOP VALVE GAS 9 52 STOP VALVE LIQUID 26 35 SERVICE PANEL BACK PANEL EXPANSION VALVE EXPANSION VALVE EXPANSION VALVE COIL 4 WAY VALVE THERMO HOLDER THERMO HOLDER CONDENSER WIRE NET CONDENSER WIRE NET CONDENSER NET CONDENSER NET CONDENSER NET CONDENSER NET SEPARATOR SEPARATOR SEPARATOR SEPARATOR MOTOR SUPPORT MOTOR SUPPORT TOP PANEL OUTDOOR HEAT EXCHANGER OUTDOOR HEAT EXCHANGER OUTDOOR FAN MOTOR RC0J50 DEFROST HEATER HEATER PROTECTOR CAPILLARY TUBE 3 0x42 0x240 CAPILLARY TUBE 3 0x21 8x600 OC322G 115 SUZ KASOVA TH SUZ KA60VA TH SUZ KA71VA TH 14 3 OUTDOOR UNIT STRUCTURAL PARTS ELECTRICA
8. OC322G 47 PERFORMANCE DATA COOLING operation at Rated frequency SEZ KA35VA SUZ KA35VA H CAPACITY 3 5 kW INPUT 1060 W SHF 0 77 OUTDOOR D B C INDOOR 40 W B C SHC SHF INPUT 18 1 86 0 59 1102 20 1 58 0 47 1134 18 1 98 0 63 1102 20 1 71 0 51 1134 22 1 39 0 39 1187 18 2 11 0 67 1102 20 1 85 0 55 1134 22 1 54 0 43 1187 18 2 24 0 71 1102 20 1 98 0 59 1134 22 1 68 0 47 1187 24 1 32 0 35 1219 20 2 12 0 63 1134 22 1 82 0 51 1187 24 1 47 0 39 1219 18 2 49 0 79 1102 20 2 25 0 67 1134 22 1 96 0 55 1187 24 1 63 0 43 1219 26 1 24 0 31 1261 18 2 61 0 83 1102 20 2 39 0 71 1134 22 2 11 0 59 1187 24 1 78 0 47 1219 26 1 40 0 35 1261 18 2 74 0 87 1102 20 2 52 0 75 1134 22 2 25 0 63 1187 24 1 93 0 51 1219 26 1 56 0 39 1261 18 2 87 0 91 1102 20 2 65 0 79 1134 22 2 39 0 67 1187 24 2 08 0 55 1219 26 1 72 0 43 1261 18 2 99 0 95 1102 20 2 79 0 83 1134 22 2 53 0 71 1187 24 2 23 0 59 1219 26 1 88 0 47 1261 18 3 12 0 99 1102 20 2 92 0 87 1134 22 2 68 0 75 1187 24 2 38 0 63 1219 26 2 03 0 51 1261 18 3 15 1 00 1102 20 3 06 0 91 1134 22 2 82 0 79 1187 24 2 53 0 67 1219 26 2 19 0 55 1261 Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity kW INPUT Total power input W WB Wet bulb tempera
9. YOLSINYSHL dW3l soru uHolovau 291 HJONVHOXA 1V3H 1 uolovau 191 JATVA SNISH3A3H HOLSINH3HL LN3ISIAV 9914 INJILNI 20821 AW Tad HOLSINH3HL HW3LNI4H 794 7INGOW LNAOITTSLNI Wal 0e6dH YaWYOASNVYL YOLSINYSHL dW3l39uvHOSsla 2914 Nose 149181 ISNA 081081703 Ieuluu l CT HOLSISNVH I H3MOd ONIHOLIMS HOLSINHIHL 1SO443ad 191 1 0 1 3sn4 194 BJEJIPUI SJOQWAS 310018 TVNIINHL 298 181 09019 9019 aggyosgy 39405 104 JUO siojonpuoo sn Z YOLSISSY 9NILO313G IN3H802 YOLOWNv4 an 3 1naoN aaola Buus 10 9284 HossdudWoo2 OW DNIHLOOWS 9 291901 Joopul 0 19461 L9H SAWA NOISNVdX3 31 YAWYOSASNVYL LNSYYND 10 Bum epis JOOPUI BU L SALON JOSNAS JOSNAS 3INVN TO8WAS L94 ees Tu SSO A31 dN 920 J 10e l ma 6 z 6 os Gold FOL e esha 9 E p d 1 3 al e EIN Hop L EY DRE ES D ER DR Ke 5 pecu sup 0 1901 XXE T U 5 1 7901 n 0150660 O v Lc 5 05 z L o 9 26ND 5 JAN vZLNO LV9NO 9 9 279 0 ill LE6ND LU gt 7 ZI ZI T Ndl 19N2 om L 291 AS ma Ges QHvO8 Od H31H3ANI l a2 0660
10. Flared connection Discharge heat Ambient temperature exchanger temperature l thermistor Defrost thermistor RT62 thermistor RT65 RT61 Compressor Outdoor heat exchanger temperature thermistor RT68 Flared connection Strainer LEV Strainer 100 coil heating ON Stop valve Capillarv tube co ling ORF 3 6 2 4 50 Refrigerant pipe 6 35 Refrigerant flow in cooling with heat insulator gt Refrigerant flow in heating SUZ KA50VAR2 TH OUTDOOR UNIT Unit mm Muffler 4 way valve 100 Refrigerant pipe 212 7 with heat insulator m Stop valve with service port Flared connection Discharge temperature thermistor De thermistor ermistor l inem RT65 Outdoor heat exchanger temperature thermistor RT68 Flared connection N Strainer TE 100 R V coil Stop valve Capillary tube heating ON with strainer 3 6 2 4 50 cooling OFF Refrigerant pipe 6 35 with heat insulator gt Refrigerant flow in cooling gt Refrigerant flow in heating OC322G 25 SUZ KA60VAR2 TH Unit mm OUTDOOR UNIT Refrigerant pipe 415 88 Muffler with heat insulator 4 way valve 100 Stop with service port 7 High pressure switch Flared connection Discharge Ambient temperature t erat thermistor Defrost thermistor thermistor RT65 RT61 Outdoor heat exchanger temperature t
11. A ny Ue el mm A NE lt 1 LOU M lt ME 3 04 BLO 82264 12841 9088 n mem ue 1 1023 0 108 F IN FIK 20801 u gt z 9X VNO o 9 Fi 751 SUZ KA50VAR2 TH OUTDOOR UNIT 20 OC322G SUZ KA60VAR2 TH OUTDOOR UNIT jeulwol ejeoipul SJOQWAS 104 sn 2 jun Joopul u 18481 epis JOOPUI 8U SALON WOO 3ATVA 9NISH3A3H HOLSIWH3HE HOLOV3H AV 133 c91H FINGOW H3MOd LNSSITIALNI Wdl YANYOASNVYL HOLSINHIHL LSO33G HOLIMS 55 H9IH SdH 390718 IVNINHIL HOLSIS44 HOLSIHVA 71INGONW LNSSITIALNI 14961 SSNS 41113 3SION 1 1 3514 YOLOW H3INHOJSNVHSHLE LNJYYNO HOSS3HdlNOD JATVA NOISNVdX3 HINHOJSNVUL LN38 D YOLIOVdVO DNIHLOOWS 5914 SdH 33N2 18910 181 Hjyv3ug 1109819 1909 ADE N AlddN S H3M0d 21 OC322G SUZ KA71VA TH SUZ KA71VA1 TH OUTDOOR UNIT 5 0 oojq euw 9 ayeolpul S
12. 69 12 4 Trouble criterion of main parts 2 SUZ KASOVA TH SUZ KASOVA TH SUZ KA50VAR2 TH SUZ KA60VA TH SUZ KAGOVA TH SUZ KA60VAR2 TH SUZ KA71VA TH SUZ KA71VA1 TH Part name Check method and criterion Defrost thermistor RT61 Fin temperature thermistor RT64 Ambient temperature thermistor RT65 Outdoor heat exchanger temperature thermistor RT68 Measure the resistance with a tester Refer to 12 6 Test point diagram and voltage 12 6 4 Outdoor electronic control P C board or 12 6 7 Inverter P C board for the chart of thermistor Discharge temperature thermistor RT62 Measure the resistance with a tester Before measurement hold the thermistor with your hands to warm it up Refer to 12 6 Test point diagram and voltage 12 6 4 Outdoor electronic control P C board or 12 6 7 Inverter P C board for the chart of thermistor Compressor Measure the resistance between the terminals with a tester Part temperature 10 C 40 C Normal SUZ KA50 60VA TH SUZ KA50 60VAR2 TH SUZ KA71VA q TH 0 40 Q 0 49 Q 0 86 Q 1 06 Q 1 29 Q 1 49 Q Outdoor fan motor Measure the resistance between lead wires with a tester Part temperature 10 C 40 Color of the lead wire Normal RED BLK BLK WHT WHT RED 13 4 Q 16 4 Q Measure the resistance wit
13. D PPS SOOGA 69 u MALO SE gt s Connect the compressor 20 ez 9 emm among phases 5 BA AS 60 5989 r NN T ok A 2 G A 325 370V DC AE Connect to the earth 1 WS Output Red 7 Dr CN2 m a A LD2 7 a ee M Peer 5 Connect to the controller board CENE 9 1 5 Signal transmission Whit electronic control board Gie 9 5V DC pulse wave x F 2 5 Zero cross signal ill mil 5 3 4 Not used N iA 4 OOO A 6 5 15V N SS 7 5 15V 2 gt gt u SHH ANS 59 CN3 a _ lt GBEEBEEBD Fin temperature thermistor RT64 reception From 2 electronic control board lh E 5V DC pulse wave A Ni Ps CN5 5 SS Primary current detection Connect to the noise filter ML 20s t OPEL n oo mE O sesesorz Connect to the compressor e PRET A Voltage among phases 5V to 180V Connect to the earth 325 370V DC Output Red CN2 Connect to the controller board 1 5 Signal transmission To electronic control P C board 5V DC pulse wave 2 5 Zero cross signal 3 4 Not used 6 5 15V 7 5 15V CN3 Fi
14. No supply and press i No Replace the power P C R64A or R64B on the power P C Does LED on the inverter F board short out Normal amp board light up board or the inverter P C resistance 50 5 OPERATION switch of board indoor unit Yes Yes Does the rush current Replace the power P C board limiting relay X64 work Yes properly Normally it Replace the power P C close 1 minutes after board or the compressor outdoor unit power ON No Replace the power P C board Check other electric parts in the main circuit together in the case of the defective current limiting resistor Heating Cooling does not work sufficiently D Check of LEV Expansion valve For wireless remote controller use model Turn ON the power supply lt Preparation of the remote controller gt While pressing both OPERATION SELECT button and TOO COOL button on the remote controller at the same time press RESET button First release RESET button And release the other two buttons after all LCD except the set temperature in operation display section of the remote controller is displayed after 3 seconds I Press OPERATE STOP ON OFF button of the remote controller the set temperature is displayed with the remote controller headed towards the indoor unit x1 Expansion valve operates full opening direction
15. R How to check miswiring and serial signal error when outdoor unit does not work For wired remote controller use model Turn OFF the power supply Y Is there rated voltage in the No Check the power power supply supply Turn the power supply Y Is there rated voltage between No outdoor terminal block S1 Check the wiring S2 Yes Press TEST button twice lt Confirmation of the power to the indoor unit gt No lamp on remote controller light up Yes Is there any mis wiring poor contact or wire disconnection of the indoor outdoor connecting wire Y Is the self check of the remote controller No displayed 6 minutes after Make them sure Serial signal error display Yes The left lamp of No OPERATION INDICATOR lamp blinks 5 hd A Y Turn OFF the power supply Check once more if the indoor outdoor B connecting wire is not mis wiring Short circuit outdoor terminal block is 52 1 Miswiring may damage indoor electronic control Does the left lamp of OPERATION INDICATOR elagtronic control P C board and S3 P C board during the operation Parts side sure to confirm the wiring is correct before the LED2 LED1 operation starts X3 Be sure
16. C INDOOR 40 W B C Q SHC SHF INPUT 18 4 14 2 07 0 50 1695 20 4 42 1 68 0 38 1744 18 4 14 2 24 0 54 1695 20 4 42 1 85 0 42 1744 22 4 69 1 41 0 30 1826 18 4 14 2 40 0 58 1695 20 4 42 2 03 0 46 1744 22 4 69 1 60 0 34 1826 18 4 14 2 57 0 62 1695 20 4 42 2 21 0 50 1744 22 4 69 1 78 0 38 1826 24 4 97 1 29 0 26 1875 20 4 42 2 38 0 54 1744 22 4 69 1 97 0 42 1826 24 4 97 1 49 0 30 1875 18 4 14 2 90 0 70 1695 20 4 42 12 56 0 58 1744 22 4 69 2 16 0 46 1826 24 4 97 1 69 0 34 1875 26 5 24 1 15 10 22 1940 18 4 14 3 06 0 74 1695 20 4 42 2 74 0 62 1744 22 4 69 2 35 0 50 1826 24 4 97 1 89 0 38 1875 26 5 24 1 36 0 26 1940 18 4 14 3 23 0 78 1695 20 4 42 2 91 0 66 1744 22 4 69 2 53 0 54 1826 24 4 97 2 09 0 42 1875 26 5 24 1 57 10 30 1940 18 4 14 3 39 0 82 1695 20 4 42 3 09 0 70 1744 22 4 69 2 72 0 58 1826 24 4 97 2 29 0 46 1875 26 5 24 1 78 10 34 1940 18 4 14 3 56 0 86 1695 20 4 42 3 27 0 74 1744 22 4 69 2 91 0 62 1826 24 4 97 2 48 0 50 1875 26 5 24 1 99 10 38 1940 18 4 14 3 73 0 90 1695 20 4 42 3 44 0 78 1744 22 4 69 3 10 0 66 1826 24 4 97 2 68 0 54 1875 26 5 24 2 20 10 42 1940 18 4 14 3 89 0 94 1695 20 4 42 3 62 0 82 1744 22 4 69 3 28 0 70 1826 24 4 97 2 88 0 58 18
17. HH xn JINC 70 po I K mel T Per ps P i TNc s0 PCI i noo i T f L i i wes APPROXIMATE THRESHOLD HEARING FOR CONTINUOUS NOISE EJ 20 63 125 250 500 1000 2000 BAND CENTER FREQUENCIES Hz 4000 8000 SUZ KA35VA TH SUZ KA35VAR1 TH SUZ KA35VAH TH SUZ KA35VAHR1 TH FAN SPEED FUNCTION SPL dB A LINE High COOLING 47 e Med HEATING 48 o o Test conditions Cooling Dry bulb temperature 35C Wet bulb temperature 24 C 35 Heating Dry bulb temperature 7C Wet bulb temperature 6C c I lt xb in T Je Jo 80 I T sb wis ed z NN NE E i I e oh S 70 i i 5 L NC 70 I TUIS 2 lt as Eo P3 I f i 60 60 E Io a fa F 50 E L f i jnues 3 0 z 40 i r NC 40 2 N P f 5 i 8 8 NC 30 lt I i i 2 oo APPROXIMATE E THRESHOLD OF LN amp HEARINGFOR 3 ka F 20 CONTINUOUS T Pi T 40 NOISE 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz SUZ KASOVA TH SUZ KASOVA TH SUZ KASOVAR2 TH SUZ KA60VA TH SUZ KAGOVA TH SUZ KA60VAR2 TH SUZ KA71VA TH S
18. TH lil II Wl 46 l i 26621 Tal l 11064 ELI T re e 088 191 O N N O O OUTDOOR UNIT 1109 SAIWA SNISH3A33 tSLZ PHOLSINHIHI 33 01V 3dW31 JDOHVHOSIG 7102 SATIVA NOISNVvaX3 31 5 SUZ KASOVA TH 502 5 SUZ KA60VA TH SUZ KAGOVA TH AV133 YOLSINYSHL 1SONJ3G 1914 3O10V33 32018 TVNIAH3L YOLSISSY r LSH 310GOW 1IN3SITISINI Mal 32018 TVNIAH3L YOLSISSY g 64 3 1nGON H3MOd 1N3SITIALNI H3WHOJSNVHL HOLSIS3MH 1 1 asnd 164 Jojeuuoo LTT o Av13H GION31OS I98SS H3TIOHINOO HOLOVJ H3MOd SJOQWAS YOLSINYSHL FYNLIWYAdNAL son HOLSIHVA Buuiw Ajuo
19. 2 Disconnect the power supply and indoor outdoor connecting wire and remove the back panel Refer to 1 3 Disconnect the ground wires See Photo 3 the lead wire to the reactor and the following connectors lt Power P C board gt CN721 4 way valve CN722 Defrost heater SUZ KA25 KA35VAH lt Inverter P C board gt CN931 CN932 Fan motor CN641 Defrost thermistor and discharge temperature thermistor CN643 Ambient temperature thermistor CN724 LEV 4 Remove the compressor connector CN61 5 Remove the screws fixing the relay panel See Photo 3 6 Remove the inverter assembly See Photo 3 7 Disconnect all connectors and lead wires on the inverter P C board See Photo 4 8 Remove the inverter P C board from the inverter assembly 9 Remove the screw fixing the power P C board See Photo 4 10 Disconnect all connectors and lead wires on the power P C board 11 Remove the power P C board from the inverter assembly 3 Removing R V coil 1 Remove the top panel cabinet and service panel Refer to 1 2 Disconnect the power supply and indoor outdoor connecting wire and remove the back panel Refer to 1 3 Remove the inverter assembly Refer to 2 4 Remove the R V coil See Photo 5 4 Removing the discharge temperature thermistor and defrost thermistor 1 Remove the top panel cabinet and service panel Refer to 1 2 Disconnect the power supply and indoor outdoor co
20. Refer to 12 5 0 Check of outdoor thermistor ightning 6 times Serial signal When the communication fails between the indoor and outdoor unit for 3 minutes Refer to 12 5 How to check mis wiring and serial signal error ightning 7 times Nonvolatile memory data When the nonvolatile memory data cannot be read properly Replace the outdoor electronic control P C board ightning 8 times Current sensor Current sensor protection stop is continuously performed twice Replace the power board ightning 11 times Communication error between P C boards When the communication protection stop between boards is continuously performed twice Check the connecting wire between outdoor electronic control P C board and power board ightning 12 times Zero cross detecting circuit The protection stop of the zero cross detecting circuit is continuously performed 10 times Check the connecting wire among outdoor electronic control P C board noise filter P C board and power board Outdoor unit stops and restarts 3 minutes later is repeated Twice Goes out IPM protection When over current is detected after 30 seconds of compressor start up Lock protection When over current is detected within 30 seconds of compressor start up Reconnect compressor connector Refer to 12 5 How to check inverter compressor Check the
21. Refrigerant pipe 9 52 4 way valve with heat insulator Flared connection Discharge temperature thermistor RT62 Capillary tube 3 0x42 0x240 Flared connection Refrigerant pipe 46 35 with heat insulator Stop valve with strainer SUZ KA25VAR1 TH SUZ KA25VAHR1 TH OUTDOOR UNIT Refrigerant pipe 29 52 with heat insulator 4 way valve Compressor Unit mm Outdoor heat exchanger temperature Ambient thermistor RT65 Strainer 100 R V coil heating ON cooling OFF Refrigerant flow in cooling sus gt Refrigerant flow in heating Unit mm e Ww i CF xac Outdoor heat exchanger 7 Stop ae temperature with service port B Muffler Outdoor thermistor Flared connection f heat RT68 temperature exchanger thermistor RT62 Compressor Ambient temperature IS thermistor RT65 Defrost thermistor RT61 E Strainer I 100 Flared connection Capillary tube LEV 3 0x 2 0x240 gt lt R V coil heating ON gt lt 000 PS cooling OFF Stop valve with strainer Refrigerant pipe 6 35 with heat insulator OC322G 23 Tal Refrigerant flow in cooling gt Refrigerant flow in heating SUZ KA35VA TH SUZ KA35VAH TH OUTDOOR UNIT Refrigerant pipe 9 52 with heat insulator mc A Flared connection Muffler lt Stop valve Flared connection z Refr
22. Changes for the Better MITSUBISHI ELECTRIC SPLIT TYPE HEAT PUMP AIR CONDITIONERS August 2011 322 REVISED EDITION G HFC utilized R410A TECHNICAL SERVICE MANUAL R410A Outdoor unit Model names Service Ref SUZ KA25VA SUZ KA25VA TH SUZ KA25VAR1 TH SUZ KA35VA SUZ KA35VA TH SUZ KA35VAR1 TH SUZ KA25VAH SUZ KA25VAH TH SUZ KA25VAHR1 TH SUZ KA35VAH SUZ KA35VAH TH SUZ KA35VAHR1 TH SUZ KA50VA SUZ KA50VA TH SUZ KA50VA TH SUZ KA50VAR2 TH SUZ KA60VA SUZ KA60VA TH SUZ KA60VA TH SUZ KA60VAR2 TH SUZ KA71VA SUZ KA71VA TH SUZ KAT71VA TH CONTENTS 1 COMBINATION OF INDOOR AND OUTDOOR UNITS 2 2 TECHNICAL CHANGES 3 3 PART NAMES AND FUNCTIONS 7 ACSPECIFICATIORN 8 M Se 5 NOISE CRITERIA CURVES 12 6 OUTLINES AND DIMENSIONS 13 7 WIRING DIAGRAM 15 8 REFRIGERANT SYSTEM 23 9 PERFORMANCE 5 29 10 ACTUATOR 57 11 SERVICE FUNCTIONS 58 SUZ KA25VA H TH SUZ KAZSVALH RT TH 12 TROUBLESHOOTING eren 58 SUZ KA35VA H TH SUZ KA3SVA HJRI TH 13 DISASSEMBLY 103 PARTS LIST er ee ee 113 15 ROHS PARTS LIST 119 Revision Errors in 11 SERVICE FUNCT
23. E12 D70 374 TERMINAL BLOCK TB2 3P E17 573 451 INVERTER P C BOARD E17 574 451 INVERTER P C BOARD E17 575 451 INVERTER P C BOARD E17 576 451 INVERTER P C BOARD Including heat sink and RT64 E12 784 382 FUSE F701 F801 F901 T3 15AL 250V O O QO RoHS E12 661 385 OC322G VARISTOR 1 NR61 NR64 23 SUZ KA25VAR1 TH SUZ KA35VAR1 TH SUZ KA25VAHR1 TH SUZ KA35VAHR1 TH 15 4 OUTDOOR UNIT UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 23 20 24 LI II iI II LI RY a SS eT a EF E f OC322G 124 SUZ KA25VAR1 TH SUZ KA35VAR1 TH SUZ KA25VAHR1 TH SUZ KA35VAHR1 TH 15 4 OUTDOOR UNIT UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration Part No Part Name Symbol in Wiring Diagram Q ty unit SUZ KA VAR1 TH SUZ KA VAHR1 TH 25 35 Remarks E12 927 232 CABINET 1 1 E12 927 521 GRILLE 1 1 E12 927 501 PROPELLER 1 1 E12 D69 290 BASE E12 D70 290 BASE E12 D69 900 COMPRESSOR KNBO73FFDHC E12 D70 900 COMPRESSOR KNB092FFAHC E12 065 506 COMPRESSOR RUBBER SET 3 RUBBERS SET E12 D69 6
24. O e A BEAD TIMES 0 FU ID HE Um ago a Anal ji villa ve DEN E L Ar x 8 Ex YASTA PV a H 00 d ma m lt k o lt ze SE 55 5 52 9 e wpe Ci Bio Es 8 5 SE Go E sa SG 26 2 z S 92 09 E Front side of unit FO EK 5 8 O or 2 20 DEO Du co oz 9 c 26 52 509 cL SS os oz E LL c Sor ZZ ve c GO ex 565 Q z cto 3 cg at oo ul LEO 052 5 555 856 gs 75 og TUE Defrost thermistor RT61 Ambient temperature thermistor RT65 Outdoor heat exchanger temperature thermistor RT68 20b Fin temperature thermistor RT64 EE Discharge temperature thermistor RT62 o HET Es TES Resistance kC Resistance 0 0 0 20 10 0 10 20 30 40 10 52020 340 50 00 70 50 290 100110 120 0 10 20 30 40 50 E 70 8 80 Temperature C Temperature C Temperature C OC322G 102 13 DISASSEMBLY INSTRUCTIONS lt Terminal with locking mechanism Detaching points gt The terminal which has the locking mechanism can be detached as shown below There are two types Refer to 1 and 2 of the
25. such as the damage of the wire intermediate connection poor contact to the terminal block Replace the indoor outdoor Yes No Inverter P C board or the outdoor electronic control P C board Parts side repeat 3 6 second OFF and 0 8 second quick blinking n LED O Yes Turn OFF the power supply Remove the short circuit between Blinking outdoor terminal block S2 and S3 Turn ON the power supply Is there amplitude of 10 to 20V DC between outdoor terminal block S2 No A and S3 lt Confirmation of serial Turn OFF inverter controlled lighting signa equipment Turn OFF the power supply and then Yes turn it again Press TEST button twice Is there rated voltage between Reinstall the indoor terminal block S1 and S2 unit apart from Confirmation of power voltage inverter contro No Is serial signal lled lighting error indicated equipment 6 minutes later Attach a filter on receiving section of the B indoor unit Yes Is there any error of the indoor outdoor connecting wire such as the damage of the wire intermediate connection poor contact to the terminal block Yes Replace the indoor outdoor connecting wire OC322G 79 Replace the indoor electronic control P C board Be sure to release the failure mode recall function after checking connecting wire SUZ KA25 35VA H TH SU
26. 22 0 60 2276 5 11 24 0 48 2362 4 29 26 0 36 2485 3 37 18 0 88 2066 6 75 20 0 76 2189 6 15 22 0 64 2276 5 45 24 0 52 2362 4 65 26 0 40 2485 3 75 18 0 92 2066 7 05 20 0 80 2189 6 48 22 0 68 2276 5 79 24 0 56 2362 5 01 26 0 44 2485 4 12 18 0 96 2066 7 36 20 0 84 2189 6 80 22 0 72 2276 6 13 24 0 60 2362 5 37 26 0 48 2485 4 50 18 1 00 2066 7 67 20 0 88 2189 7 12 22 0 76 2276 6 48 24 0 64 2362 5 73 26 0 52 2485 4 87 NOTE Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W WB Wet bulb temperature OC322G 53 PERFORMANCE DATA COOLING operation at Rated frequency SEZ KA71VA SUZ KA71VA CAPACITY 7 1 kW INPUT 2460 W SHF 0 74 OUTDOOR D B C INDOOR 40 W B C Q SHC SHF INPUT 18 3 58 0 56 2558 20 3 00 0 44 2632 18 3 83 0 60 2558 20 3 27 0 48 2632 22 2 61 0 36 2755 18 4 09 0 64 2558 20 3 54 0 52 2632 22 2 90 0 40 2755 18 4 35 0 68 2558 20 3 82 0 56 2632 22 3 19 0 44 2755 24 2 45 0 32 2829 20 4 09 0 60 2632 22 3 48 0 48 2755 24 2 76 0 36 2829 18 4 86 0 76 2558 20 4 36 0 64 2632 22 3 77 0 52 2755 24 3 07 0 40 2829 26 2 27 0 28 2927 18 5 11 0 80 2558 20 4 63 0 68 2632 22 4 06 0 56 2755 24
27. 54 509 BE P8c 50 500 of Bx at e LEO 292 oS 3 E ase Defrost thermistor RT61 Ambient temperature thermistor RT65 Outdoor heat exchanger temperature thermistor RT68 Fin temperature thermistor RT64 Discharge temperature thermistor RT62 BE E e 600 G 500 5 gt 400 1 300 200 PPPS 100 sms 0 0 20 10 0 10 20 30 40 0 10 20 30 40 50 60 70 80 90 100 110 120 0 10 20 30 40 50 60 70 80 Temperature C Temperature C Temperature C OC322G 98 12 6 4 Outdoor electronic control board 502 5 SUZ KA60VA TH SUZ KA60VAR2 TH Discharge temperature thermistor RT62
28. D B C 3 Outdoor intake air wet bulb temperature W B C 4 Total input W 4 Total input W Indoor air wet dry bulb temperature difference on the side of the chart on page shows the difference between the indoor intake air wet dry bulb temperature and the indoor outlet air wet dry bulb temperature for your reference at service How to measure the indoor air wet bulb dry bulb temperature difference 1 Attach at least 2 sets of wet and dry bulb thermometers to the indoor air inlet as shown in the figure and at least 2 sets of wet and dry bulb thermometers to the indoor air outlet The thermometers must be attached to the position where air speed is high 2 Attach at least 2 sets of wet and dry bulb thermometers to the outdoor air inlet Cover the thermometers to prevent direct rays of the sun 3 Check that the air filter is cleaned 4 Open windows and doors of the room 5 Press the TEST button twice to start the COOL HEAT MODE 6 When system stabilizes after more than 15 minutes measure temperature and take an average temperature 7 10 minutes later measure temperature again and check that the temperature does not change INDOOR UNIT OUTDOOR UNIT Air outlet H dHHE fede Wet and dry bulb thermometers V RO A 5 Air inlet Ti BACK VIEW Th
29. ELECTRICAL PARTS AND FUNCTIONAL PARTS SUZ KA50VAR2 TH JE 7 7 C TH I M IIA eo 11 12 10 128 30 29 28 27 OC322G 15 6 OUTDOOR UNIT STRUCTURAL PARTS ELECTRICAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration Symbol in Wiring Diagram Q tylunit SUZ KA50VAR2 TH Remarks E12 819 297 TOP PANEL E12 851 630 OUTDOOR HEAT EXCHANGER E12 938 301 OUTDOOR FAN MOTOR RCOJ60 E12 851 501 PROPELLER FAN E12 851 290 BASE E12 819 232 CABINET E12 819 009 HANDLE E12 819 521 FAN GUARD GOO IN E12 C34 506 COMPRESSOR RUBBER SET 3 RUBBERS SET e E12 C37 900 COMPRESSOR SNB130FGBH E12 D58 661 STOP VALVE GAS 012 7 N E12 D58 662 STOP VALVE LIQUID 6 35 E12 851 640 EXPANSION VALVE E12 058 493 EXPANSION VALVE COIL 12 D58 490 R V COIL E12 C18 961 4 WAY VALVE 12 819 650 12 819 245 SERVICE PANEL E12 058 306 THERMISTOR SET RT
30. OC322G 4 New Specification Current Specification The incompatible refrigerant oil easily separates from Since refrigerant and refrigerant oil are compatible with refrigerant and is in the upper layer inside the suction muffler each other refrigerant oil backs to the compressor through Raising position of the oil back hole enables to back the the lower position oil back hole refrigerant oil of the upper layer to flow back to the compressor Suction muffler Suction muffler o o a E Compressor Oil back hole Compressor Refrigerant oil Refrigerant Refrigerant oil Refrigerant NOTE The unit of pressure has been changed to MPa on the international system of units SI unit system The conversion factor is 1 MPa Gauge 10 2 kgf cm Gauge Conversion chart of refrigerant temperature and pressure MPa Gauge 4 0 3 5 R410A 3 0 NOTE The unit of pressure has been changed to MPa on the international system of units SI unit system 1 0 BE E sess The conversion factor is 1 MPa Gauge 210 2 kgf cm2 Gauge 0 5 LE TIIIT 20 10 10 20 30 40 50 60 Saturated liquid pressure amp 1 Tools dedicated for the air conditioner with R410A refrigerant The following tools are required for R410A refrigerant Some R22 tools can be substituted for R410A tools The diameter of the service port on the stop valve
31. tion will be activated in the following cases 1 Instantaneous power voltage drop Short time power failure 9 time flash 2 5 seconds OFF Inverter check mode The connector of compressor is disconnected inverter check mode starts Check if the connector of the com pressor is correctly connected Refer to 12 5 How to check in NOTE 1 The location of LED is illustrated at the right figure Refer to 12 6 3 or 12 6 7 2 LED is lighted during normal operation The flashing frequency shows the number of times the LED blinks after every 2 5 second OFF Example When the flashing frequency is 2 OC322G 2 5 second 0 5 second ON E 0 5 second ON OFF 68 verter compressor Inverter P C board Parts side LED Flashing 12 4 Trouble criterion of main parts 1 SUZ KA25VA TH SUZ KA25VAH TH SUZ KA35VA TH SUZ KA25VAR1 TH SUZ KA35VAR1 TH SUZ KA35VAH TH SUZ KA25VAHR1 TH SUZ KA35VAHR1 TH Part name Check method and criterion Figure Defrost thermistor RT61 Fin temperature thermistor RT64 Measure the resistance with a tester Ambient temperature Refer to 12 6 Test point diagram and voltage 12 6 1 or 12 6 3 thermistor RT65 Inverter P C board for the chart of thermistor Outdoor heat exchanger temperature thermistor RT68 SUZ KA25 35VA H R1 TH Measure the resistance with tester Discharge temperature Befor
32. 0 5 sec starts X v 7 eed d Number of blinks beeps in pattern indicates the check code in the next page i e 5 for P5 3 Blinking pattern when the outdoor unit is abnormal Output pattern B Number of blinks beeps in pattern indicates the check code in the next page Beepersounds Beep Beep Beep Beep Beep Beep OPERATION 1st 2nd 3 H nth ME 181 2 Repeated INDICATOR 4 gt lt lt gt lamp blink n On Off n pattern Self check Approx 2 5 sec Approx 3 sec 0 5 sec 0 5 sec 0 5 sec 0 5 sec Approx 2 5 sec Approx sec 0 5 sec 0 5 sec starts Ne E y Start signal Y RS T received Number of blinks beeps in pattern indicates the check Number of blinks beeps in pattern indicates code in the next page i e n 5 for U2 OC322G 59 the check code in the next page 12 2 2 Wired remote controller CHECK button Turn on the power Refrigerant address Press the CHECK button twice Amonin scm TEMP button Set refrigerant address with TEMP button Pep IC Indoor unit if system control is used FUE mes OC Outdoor unit Press the ON OFF button to stop the self check A pun amp Check code 12 2 3 Failure mode table Wireless remote controller Wired remote contr
33. 1 Devices affected by the electromagnetic noise TV sets radios FM AM broadcast shortwave 2 Channel frequency broadcast station affected by the electromagnetic noise 3 Channel frequency broadcast station unaffected by the electromagnetic noise 4 Layout of indoor outdoor unit of the air conditioner indoor outdoor wiring grounding wire antennas wiring from antennas receiver 5 Electric field intensity of the broadcast station affected by the electromagnetic noise 6 Presence or absence of amplifier such as booster 7 Operation condition of air conditioner when the electromagnetic noise enters in 1 Turn OFF the power supply once and then turn ON the power supply In this situation check for the electromagnetic noise 2 Within 3 minutes after turning ON the power supply press OPERATE STOP ON OFF button on the remote controller for power ON and check for the electromagnetic noise 3 After a short time 3 minutes later after turning ON the outdoor unit starts running During operation check for the electromagnetic noise 4 Press OPERATE STOP ON OFF button on the remote controller for power OFF when the outdoor unit stops but the indoor outdoor communication still runs on In this situation check for the electromagnetic noise After checking the above consult the service representative OC322G 80 Outdoor unit does not operate LED display display OFF SUZ KA50 60 71VA TH SUZ KA60VAR2 TH C
34. 150 Hz The operational frequency of compressor SUZ KA60VA Correction of Heating total input 0 0 0 50 100 150 Hz The operational frequency of compressor SUZ KA71VA Correction of Heating total input 0 0 50 100 150 Hz The operational frequency of compressor OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT lt How to operate fixed frequency operation Test run operation gt 1 Press the TEST button to COOL or HEAT mode 2 Test run operation starts and continues to operate for 30 minutes 3 Compressor starts at rated frequency in COOL mode or 58Hz in HEAT mode 4 Indoor fan operates at High speed 5 After 30 minutes test run operation finishes and EMERGENCY OPERATION starts 6 To cancel test run operation EMERGENCY OPERATION press the ON OFF button on remote controller NOTE The unit of pressure has been changed to MPa on the international system of units SI unit system The conversion factor is 1 MPa Gauge 10 2 kgf cm Gauge OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Both indoor and outdoor units are under the as XN Relative humidity same temperature humidity condition Dry bulb temperature Air flow High speed 20 50 Operation TEST RUN OPERATION 25 60 30 70 SUZ KA25VA H SUZ KA35VA H SUZ KA50VA SUZ KA60VA Gauge MPa Gauge Gauge MPa Gauge Gauge MPa Gauge Gauge
35. 2 os H t eE 55 11 2 129 15 2 Ht orp 5 9 6 11 0 13 0 0 6 0 6 25 FS 10 2 0 5 0 15 10 5 0 5 10 15 5 5 2 5 Outdoor intake air Wet bulb temperature Outdoor intake air Wet bulb temperature 85 85 55 a 35 55 NEJ NE Bel Del Oz NOTE The above curves are for the heating operation without any frost SUZ KA25VA H Correction of Heating total input 2 0 a a Input correction factors 0 0 0 50 100 150 2 operational frequency of SUZ KA35VA H Correction of Heating total input zx a Input correction factors A o 0 0 0 50 100 150 Hz The operational frequency of compressor SUZ KA50VA Correction of Heating total input 2 5 o 52 0 o amp 5 1 5 g 5 1 0 o 5 20 5 0 0 0 50 100 150 Hz The operational frequency of compressor lt How to operate fixed frequency operation Test run operation gt 1 Press the EMERGENCY OPERATION switch or the Test button to COOL or HEAT mode 2 Test run operation starts and continues to operate for 30 minutes 3 Compressor starts at rated frequency in COOL mode or 58Hz in HEAT mode 4 Indoor fan operates at High speed 5 After 30 minutes test run operation finishes and EMERGENCY OPERATION starts 6 To cancel test run operation EMERGENCY OPERATION press the EMERGENCY OPERATION switch or the ON OFF button on remote controller NOTE The unit of pr
36. 20 10 0 10 20 30 Temperature 40 Fin temperature thermistor RT64 200 180 160 140 S Resistance 8 Bo 2 0 10 20 30 40 50 60 70 80 Temperature CN601 230V Serial signal 50 Hz Room A Input 5 10V DC 700 600 9 5 400 S 300 200 S 100 3 0 0 10 20 30 40 50 60 70 80 90 100 10 120 5 Temperature C E E s Ou or Sk c gt L 95 2 9 e 8 go 85 855 555 o SE 59 5 5 5 59 583 858 E s 585 S59 E G 5 Sz 35 2 5775960 Os EL 553 gt gt lt 55 88 i 83 gt G o zoo 2 TA no 585 8 8 SHES SOLS 5882 g 20 209 0259 255 ZA cmt 682606009 92 LE Z 165667225 508 Z a i tg Poolt B Tale ri U oodd zit RETI Reve LED 1 LED 2 CN801 325V DC 370V DC Input 2801 FUSE 3 15A 250V o E o 9 o m Reot __ TO 9 D sa 5881 80
37. 24 060 662 1 89 26 0 48 697 1 58 18 1 00 580 2 70 20 088 614 2 51 22 076 638 2 28 24 064 662 2 02 26 052 697 1 72 18 1 00 580 2 70 20 0 92 614 2 62 22 080 638 2 40 24 068 662 2 14 26 0 56 697 1 85 18 1 00 580 2 70 20 0 96 614 2 74 22 084 638 2 52 24 072 662 2 27 26 0 60 697 1 98 18 1 00 580 2 70 20 1 00 614 2 85 22 088 638 2 64 24 076 662 2 39 26 064 697 2 11 NOTE Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W WB Wet bulb temperature OC322G 39 PERFORMANCE DATA COOLING operation at Rated frequency SLZ KA25VA L SUZ KA25VA H CAPACITY 2 5 kW INPUT 690 W SHF 0 86 OUTDOOR D B C INDOOR 40 W B C SHC SHF INPUT 18 1 53 0 68 718 20 1 34 0 56 738 18 1 62 0 72 718 20 1 44 0 60 738 22 1 22 0 48 773 18 1 7110 76 718 20 1 54 0 64 738 22 1 33 0 52 773 18 1 80 0 80 718 20 1 63 0 68 738 22 1 43 0 56 773 24 1 19 0 44 794 20 1 73 0 72 738 22 1 53 0 60 773 24 1 30 0 48 794 18 1 98 0 88 718 20 1 82 0 76 738 22 1 63 0 64 773 24 1 40 0 52 794 26 1 14 0 40 821 18 2 07 0 92 718 20 1 92 0 80 738 22 1 73 0 68 773 24 1 51 0 56 794 26 1 25 0 44 821 18 2 16 0 96 718 20 2 0210 84 738 22 1 84 0 72 773 24 1 62 0 60 794 26 1 3710 48 8
38. 26 4 50 4 80 5 10 5 40 5 70 3 47 3 12 2 70 2 21 1 65 0 77 0 65 0 53 0 41 0 29 1851 1905 1994 2047 2118 18 20 22 24 26 4 50 4 80 5 10 5 40 5 70 3 65 3 31 2 91 2 43 1 88 0 81 0 69 0 57 0 45 0 33 1851 1905 1994 2047 2118 18 20 22 24 26 4 50 4 80 5 10 5 40 5 70 3 83 3 50 3 11 2 65 2 11 0 85 0 73 0 61 0 49 0 37 1851 1905 1994 2047 2118 18 20 22 24 26 4 50 4 80 5 10 5 40 5 70 4 01 3 70 3 32 2 86 2 34 0 89 0 77 0 65 0 53 0 41 1851 1905 1994 2047 2118 18 20 22 24 26 4 50 4 80 5 10 5 40 5 70 4 19 3 89 3 52 3 08 2 57 0 93 0 81 0 69 0 57 0 45 1851 1905 1994 2047 2118 18 20 22 24 26 4 50 4 80 5 10 5 40 5 70 4 37 4 08 3 72 3 29 2 79 0 97 0 85 0 73 0 61 0 49 1851 1905 1994 2047 2118 NOTE 18 20 22 24 26 Q Total capacity kW SHC Sensible heat capacity kW OC322G 4 50 4 80 5 10 5 40 5 70 SHF INPUT 4 50 4 27 3 93 3 51 3 02 Sensible heat factor Total power input W 1 00 0 89 0 77 0 65 0 53 1851 1905 1994 2047 2118 50 DB Dry bulb temperature WB Wet bulb temperature PERFORMANCE DATA COOLING operation at Rated frequency SEZ KA60VA SUZ KA60VA CAPACITY 5 5 kW INPUT 1960 W SHF 0 75 OUTDOOR D B C INDOOR 25 27 W B C SHF IINPUT
39. 890 3 29 28 20 0 75 943 2 99 28 22 0 63 981 2 65 28 24 0 51 1018 2 25 28 26 0 39 1071 1 80 29 18 0 911 890 3 44 29 20 0 79 943 3 15 29 22 0 67 981 2 81 29 24 0 55 1018 2 43 29 26 0 43 1071 1 99 30 18 0 95 890 3 59 30 20 0 83 943 3 31 30 22 0 71 981 2 98 30 24 0 59 1018 2 60 30 26 0 47 1071 2 17 31 18 0 99 890 3 74 31 20 0 87 943 3 47 31 22 0 75 981 3 15 31 24 0 63 1018 2 78 31 26 0 51 1071 2 36 32 18 1 00 890 3 78 32 20 0 91 943 3 63 32 22 0 79 981 3 32 32 24 0 67 1018 2 95 32 26 0 55 1071 2 54 Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity kW INPUT Total power input W WB Wet bulb temperature OC322G 41 PERFORMANCE DATA COOLING operation at Rated frequency SLZ KA35VA L SUZ KA35VA H CAPACITY 3 5 kW INPUT 1060 W SHF 0 77 OUTDOOR D B C INDOOR 40 W B C Q INPUT 18 1 86 0 59 1102 20 1 58 0 47 1134 18 198 0 63 1102 20 1 71 0 51 1134 22 139 0 39 1187 18 2 11 0 67 1102 20 1 85 0 55 1134 22 154 043 1187 18 224 0 71 1102 20 198 0 59 1134 22 1 68 0 47 1187 24 1 32 0 35 1219 20 2 42 0 63 1134 22 182 0 51 1187 24 1 47 0 39 1219 18 2 49 0 79 1102 20 2 25 0 67 1134 22 1 96 0 55 1187 24 1 63 0 43 1219 26 124 0 31 1261 18 2 61 0 83 1102 20 2
40. DB Except when combined with MFZ SUZ KA25VA TH SUZ KA35VA TH Lower limit Heating Outdoor 10C DB 15 C DB SUZ KA35VAH TH Defrost finish temperature has been changed Refer to 11 SERVICE FUNCTIONS SUZ A09VR TH gt SUZ KA25VA TH SUZ A12VR TH SUZ KA35VA TH Indication of capacity has been changed BTU base kW base Control method between indoor and outdoor unit has been changed Power supply method has been changed change to supply from outdoor unit Terminal block for power supply has been added Power P C board has been changed Inverter P C board has been changed Refrigerant circuit has been changed Compressor has been changed KNBO73FBVH KNB073FDVH SUZ KA25VA KNB092FAAH KNB092FCAH SUZ KA35VA Specification and position of muffler have been changed Path of outdoor heat exchanger has been changed 4 way valve and R V coil have been changed Stop valve has been changed 8 Fan motor has been changed AC DC 9 Shape of grille has been changed 10 Shape of service panel has been changed 11 Shape of propeller has been changed 12 Symbol on terminal block has been changed to 51 52 53 O Q N OC322G 3 SUZ A18VR SUZ KASOVA TH SUZ A24VR SUZ KA60VA TH Indication of capacity has been changed BTU base kW base Power supply method has been changed change to supply from outdoor unit Outdoor electronic contr
41. EMERGENCY OPERATION Is HPS protection displayed Yes immediately after compressor starts Replace HPS Replace the electronic control P C board Outdoor unit does not operate at all or stops immediately due to overcurrent Y Check of current limiting resistor When the current limiting resistor is open the rush current limiting relay X64 may not work properly Is the resistance of current limiting Not resistor R64A or R64B on the open Normal resistance 50 5 noise filter P C board normal Turn ON the power supply and press EMERGENCY OPERATION switch gt electronic control P C board Does LED on the outdoor No light up Yes Open Replace the power P C board OC322G 87 Does the rush current limiting relav X64 work properly No Replace the noise filter P C board gt Replace the noise filter P C board or the outdoor electronic control P C board Replace the outdoor electronic control P C board or power P C board or the compressor SUZ KA25 35VA H R1 TH SUZ KASOVAR2Z TH a How to check inverter compressor Disconnect the connector CN61 between compressor and the intelligent power module IPM Y Check the voltage between terminals c7 See D Check of open phase Y Are the voltages balanced No
42. HEIGHT DIFFERENCE Indoor unit SLZ SEZ Max Height difference 12m Refrigerant Piping Max length A Outdoor unit Y Height difference should within 12 regardless of which unit indoor outdoor position is high ADDITIONAL REFRIGERANT CHARGE R410A g Outdoor unit Refrigerant piping length one way precharged 8m 9m 10m 11m 12m Models SUZ KA25VA TH SUZ KA25VAH TH SUZ KA25VAR1 TH SUZ KA25VAHR1 TH SUZ KA35VA TH SUZ KA35VAH TH SUZ KA35VAR1 TH SUZ KA35VAHR1 TH 900 90 150 180 210 800 Calculation Xg 30g mx Refrigerant piping length m 5 OC322G 27 SUZ KASOVA TH 502 5 SUZ KA50VAR2 TH SUZ KA60VA TH SUZ KA60VA1 TH SUZ KA60VAR2 TH SUZ KA71VA TH SUZ KA71VA1 TH MAX REFRIGERANT PIPING LENGTH Refrigerant piping Model Max length m A Gas Liquid Piping size O D mm SUZ KASOVA TH SUZ KASOVAsTH SUZ KASOVAR2Z TH SUZ KA60VA TH SUZ KA60VA1 TH SUZ KA60VAR2 TH SUZ KA71VA TH SUZ KA71VA1 TH MAX HEIGHT DIFFERENCE Indoor unit Max Height difference 30m SLZ SEZ a Refrigerant Piping Max length A Outdoor unit Height difference should be within 30m regardless of which unit indoor or outdoor position is high Max Height dif
43. R V coil 4 Remove the R V coil Photo 11 OC322G 110 Photo 4 Screws of the power board assembly Screws of the relay panel Photo 5 SUZ KA50VAR2 TH Screws of the relay panel Screws of the reactor Photo 6 SUZ KA50VAR2 TH Inverter P C Screw of the board Heat sink T B support 4 Hook of the PB support PB support KA T B support Hook of the PB support Screw of the earth wire Screw of the PB fixture Relay panel OPERATING PROCEDURE PHOTOS 4 Removing the defrost thermistor discharge temper Photo 7 ature thermistor outdoor heat exchanger tempera ture thermistor and ambient temperature thermistor 1 Remove the top panel cabinet and service panel Refer to 1 2 Remove the back panel Refer to 1 3 Remove the inverter assembly Refer to 2 4 Pull out the defrost thermistor from its holder Photo 8 5 Pull out the discharge temperature thermistor from its holder Photo 7 6 Pull out the outdoor heat exchanger temperature thermistor from its holder Photo 8 7 Pull out the ambient temperature thermistor from its holder Photo 8 Discharge temperature thermistor Photo 8 Outdoor heat Ambient exchanger gt temperature temperature thermistor thermistor Defrost thermistor 5 Removing outdoor fan motor Photo 9 1 Remove the top panel cabinet and service panel Refer to 1 2 Remove the back panel Refer to 1 9 D
44. SUZ KA35VA TH SUZ KA35VAR1 TH SUZ KA35VAH TH SUZ KA35VAHR1 TH 1 Inverter P C board and Power P C board have been changed 2 Refrigerant circuit has been changed Compressor has been changed KNBO73FDVH C KNBO73FFDHC SUZ KA25VA H R1 TH KNBO92FCAH KNBO92FFAHC SUZ KA35VA H R1 TH Muffler of liquid pipe side has been deleted Muffler of gas pipe side has been changed Capillary tube of liquid pipe side has been added SUZ KA35VA H R1 TH 4 way valve and R V coil have been changed Specification of LEV body has been changed Stop valve has been changed Precharged refrigerant amount has been changed 900g 800g SUZ KA25VA H R1 TH Fan motor has been changed RC0J50 AL RC0J50 DB Outdoor heat exchanger temperature thermistor RT68 has been added oR SUZ KA50VA1 TH gt SUZ KA50VAR2 TH SUZ KA60VA1 TH SUZ KA60VAR2 TH 1 OUTDOOR ELECTRONIC CONTROL P C BOARD has been changed 2 Compressor has been changed SNB130FLDH 1 SNB130FGBH 3 High pressure switch has been added SUZ KA60VAR2 TH 4 Thermistors RT61 62 64 65 68 have been changed SUZ KA50VAR2 TH SUZ KASOVA TH SUZ KASOVA TH SUZ KA60VA TH 502 SUZ KA71VA TH SUZ KAT1VA TH 1 OUTDOOR ELECTRONIC CONTROL P C BOARD has been changed 2 Max height difference 15m 30m Except when combined with MFZ 3 Guaranteed operating range Lower limit Cooling Outdoor 10 C DB 15 C
45. SUZ KA35VAR1 TH SUZ KA35VAHR1 TH SUZ KASOVAR2 TH Current CT 20A transformer CT761 CT781 15A Smoothing C61 620 uF 420V capacitor C62 C63 620 uF 420 Diodewaodule DB61 15A 600V 25A 600V DB65 25A 600V F61 T20AL250V Fuse F701 F801 F901 T3 15AL250V Defrost heater H M 230 W MI ut IPM 15A 600V 20A 600V Expansion valve coil LEV DC 12 V Reactor L61 23 mH R61 45mQ 5 W 100 5 W 1 element 2 elements 180 5W Current R61 R62 S 2 elements detecting R825 25 5 W resistor R937 R938 430 2 W 8939 m R937A R937B 1 10 2W Current limiting PTC64 330 thermistor PTC65 Terminal block TB1 TB2 3P X63 250V Relay X64 20A 250 V X66 3A 250V 3A 250V R V coil 2154 AC 220 240 V Heater protector 26H 45 Open 45 C IGBT TR821 30A 600 V OC322G 11 5 NOISE CRITERIA CURVES SUZ KA25VA TH SUZ KA25VAR1 TH SUZ KA25VAH TH SUZ KA25VAHR1 TH FAN SPEED FUNCTION SPL dB A LINE High COOLING 46 e e Med HEATING 46 0 o Test conditions OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR 80 70 60 50 40 30 20 10 Cooling Dry bulb temperature 35C Wet bulb temperature 24 ai Heating Dry bulb temperature 7C Wet bulb temperature 6 C
46. abnormal The indoor unit is abnormal Check the blinking pattern and confirm the abnormal point Make sure to check at least two consecutive blinking cycles 2 The outdoor unit is abnormal Check the blinking pattern and confirm the abnormal point 12 2 3 Make sure to check at least two consecutive blinking cycles 83 Releasing the failure mode recall function Release the failure mode recall function by the following procedures OR OTurn OFF the power supply and turn ON it again Press RESET button of the remote controller With the remote controller headed towards the indoor unit press any button that is not used in this failure mode recall function e g TIMER button OPERATION INDICATOR lamp Repair the defective parts MITSUBISHI O pe 9 DJ Note1 Make sure to release the failure mode recall function once it is set up otherwise the unit cannot operate properly 2 If the abnormal condition is not deleted from the memory the last abnormal condition is kept memorized 2 Blinking pattern when the indoor unit is abnormal Output pattern A Beep Beep 15 2 Repeated SS On Beeper sounds Beep Beep Beep Beep OPERATION xe T 2d 3 n INDICATOR PERI lamp blink Of On On On Off On pattern Self check 2 5 sec 0 5 sec 0 5 sec 0 5 sec 0 5 sec Approx 2 5 sec0 5 sec
47. balance of voltage between terminals Output voltage V 115V Inverter P C board lt lt Operation method gt gt Start cooling or heating operation by pressing the EMERGENCY OPERATION switch Flashing on the indoor unit test run mode refer to page 31 for SLZ SUZ and 37 for SEZ SUZ LEDe lt lt Measurement point gt gt Measure AC voltage between the lead wires at 3 points BLK U WHT V BLK U RED W WHT V RED W 9 time flash NOTE 1 Output voltage varies according to power supply voltage S08 0808 0808 080808000008 2 Measure the voltage by analog type tester PMCID E M Ep 3 During this check LED of inverter P C board flashes 9 times 2 5 second OFF C Check of intelligent power module Measure the resistance between terminals on the intelligent ohmmeter indication power module Measurement point at 6 points S EM Normal BLK WHT WHT BLK infinite BLK RED RED BLK 9 WHT RED RED WHT lt lt Judgement gt gt lt Infinite Normal Abnormal O dozens of Abnormal short CS 0 dozens OC322G 71 SUZ KA25 35VA H TH Check of compressor Check of compressor No winding gt Replace the compressor Is the compressor normal pe Check of compressor No isthe compressoi i i operation time Does th
48. bulb thermometers BACK VIEW OC322G 29 Indoor air Wet bulb temperature difference degree difference degree Indoor air Wet bulb temperature Indoor air Wet bulb temperature difference degree Cooling capacity Total input cooling 6 4 a 14 r 1 4 5 Indoor intake air Wet bulb 5 9 9 1 3 temperature C 5 1 3 Indoor intake air Wet bulb temperature C E 5 4 12 26 5 1 2 26 T 24 22 s 20 5 0 1 1 24 1 1 18 4 5 1 0 5 1 0 22 4 1 0 9 20 0 9 18 10 5 0 5 10 15 20 25 30 35 40 4546 ES 10 5 0 5 10 15 20 25 30 35 40 4546 3 Outdoor intake air Dry bulb temperature Outdoor intake air Dry bulb temperature 3 Ne 9 s Cooling capacity Total input cooling 8 4 a 14 1 4 Indoor intake air Wet bulb A 7 8 1 3 temperature C 1 3 Indoor intake air Wet bulb temperature C E E 7 2 1 2 26 s 1 2 26 T 24 22 20 6 6 8 1 1 24 E 18 9 6 0 1 0 5 1 0 a 22 5 4 0 9 20 0 9 18 10 5 0 5 10 15 20 25 30 35 40 4546 10 5 0 5 10 15 20 25 30 35 40 4546
49. careful of the residual Yes voltage of smoothing capacitor Turn OFF the power supply Remove the short circuit between Is there any error of the DUI SDN block s and S3 indoor outdoor connecting wire veg Replace the amplitude of 10 to 20V DC such as the damage of the wire indoor outdoor between outdoor terminal block S2 No intermediate connection poor connecting wire A and S3 Confirmation of serial contact to the terminal block Turn OFF inverter controlled lighting signal gt equipment No Turn OFF the power supply and then turn ON it again Yes Press EMERGENCY OPERATION Y Is there any error of the switch Is there rated voltage between indoor outdoor connecting wire yes Replace the indoor terminal block S1 and S2 such as the damage of the wire indoor outdoor Reinstall the lt Confirmation of power voltage gt intermediate connection poor connecting wire unit apart from contact to the terminal block inverter contro No Is serial signal lled lighting error indicated equipment No 6 minutes later Attach a filter on receiving section of the Replace the indoor electronic control P C board B indoor unit Be sure to release the failure mode recall function after checking OC322G 82 SUZ KA50 60 71VAq1 TH SUZ KA60VAR2 TH When unit cannot operate neither by the remote controller Indoor unit does not operate Outdoor unit does not operate
50. discharge temperature ther mistor CN643 Ambient temperature thermistor CN644 Outdoor heat exchanger temperature thermistor CN724 LEV 3 Remove the compressor connector CN61 4 Remove the screws fixing the relay panel Photo 3 5 Remove the inverter assembly Photo 4 6 Remove the screw of the earth wire and screw of the T B support Photo 4 7 Remove the relay panel from the inverter assembly 8 Remove the inverter P C board from the relay panel AHAH Photo 4 Inverter assembly Inverter Screw of the Heat sink P C board T B support Removing R V coil T B support 1 Remove the cabinet and panels Refer to 1 1 2 Disconnect the following connectors Inverter P C board CN721 R V coil 3 Remove the R V coil Photo 5 Screw of the Relay panel earth wire Removing the discharge temperature thermistor Photo 5 R V coil defrost thermistor outdoor heat exchanger tempera ture thermistor and ambient temperature thermistor 1 Remove the cabinet and panels Refer to 1 2 Disconnect the lead wire to the reactor and the following con nectors lt Inverter P C board gt CN641 Defrost thermistor and discharge temperature ther mistor CN643 Ambient temperature thermistor CN644 Outdoor heat exchanger temperature thermistor 3 Pull out the discharge temperature thermistor from its holder Photo 5 4 Pull out the defrost thermistor from its holder Photo 6 5 Pul
51. jiu 20 5 80 5 o G a c amp 0 0 0 50 100 150 Hz 100 150 Hz The operational frequency of compressor The DNE MM of compressor OC322G SUZ KA25VA H Correction of Heating capacity 2 0 Input correction factors N o o a Capacity correction factors 0 0 0 50 100 The operational frequency of compressor SUZ KA35VA H Correction of Heating capacity ut 100 150 Hz The aT of compressor Input correction factors N a o s ud correction Jaco o SUZ KASOVA Correction of Heating capacitv i 100 150 Hz The of compressor o Input correction factors N o a o o PSY correction o SUZ KA60VA p Seen of Heating capacity Input correction factors N a o o o PS correction factor o 100 150 Hz The SUZ KA71VA Correction of Heating capacity f 100 150 Hz The edid of compressor 36 a Input correction factors N a a a gt correction TACOS o 150 Hz SUZ KA25VA H Correction of Heating total input 0 0 50 100 150 Hz The operational frequency of compressor SUZ KA35VA H Correction of Heating total input 0 0 0 50 100 150 Hz The operational frequency of compressor SUZ KASOVA Correction of Heating total input 0 0 50 100
52. motor pipe connected with compressor 6 Remove the nuts compressor legs 7 Remove the compressor 8 Detach the welded part of pipes connected with 4 way valve See Photo 8 Propeller Photo 8 Welded parts of 4 way valve OC322G 105 SUZ KA25VAR1 TH SUZ KA25VAHR1 TH OUTDOOR UNIT SUZ KA35VAR1 TH SUZ KA35VAHR1 TH OPERATING PROCEDURE NOTE Turn OFF power supply before disassembling PHOTOS 1 Removing the cabinet 1 Remove the screw fixing the service panel 2 Pull down the service panel and remove it 3 Disconnect the power supply and indoor outdoor con necting wire 4 Remove the screws fixing the top panel 5 Remove the top panel 6 Remove the screws fixing the cabinet 7 Remove the cabinet 8 Remove the screws fixing the back panel 9 Remove the back panel OC322G Photo 1 Screws of the top panel Screws of the top panel Screws of the cabinet Photo 2 Screw of the cabinet Screw of the service panel Direction to 1 Screws of the cabinet 106 OPERATING PROCEDURE PHOTOS 2 Removing the inverter assembly inverter P C board Photo 3 1 Remove the cabinet and panels Refer to 1 2 Disconnect the lead wire to the reactor and the following con Screws of the nectors relay panel lt Inverter P C board gt CN721 R V coil CN722 Defrost heater SUZ KA25 35VAHR1 TH CN932 Fan motor CN641 Defrost thermistor and
53. nea RETO OO B 1279 R602 6 REGA REGB REGS REED 80 E doooo w 6 51598 000000000 Ek ON o z 0 fo of 6 O orp oo o 000000 5 il zl 4 DA793 DATS2 H 12804 f Las LJ Ln LI LL uL LF LI LRA 59 9 9 9 99 Que b 60 76 0 oos 90 ovs OO one SUZ KA60VAR2 SUZ KA71VAq CN681 OC322G L High pressure switch 99 12 6 5 Noise filter P C board SUZ KA50VAo TH SUZ KA60VAo TH SUZ KA60VAR2 TH SUZ KA71VA 1 TH CN901 To electronic 902 903 control To power To power P C board board board Ser 230V ten ER 5 Input ASSL 7 R9018 ER gt Ei Cal e gt CN912 Ce R V coil 230V 230V 230V AC AC50Hz 50Hz Output Output 3 amp b o lt 3 I E c D914 NR64 VARISTOR F64 FUSE F911 FUSE 2A 250V 1A 250V 22 100 12 6 6 Outdoor power board SUZ KA50VA TH SUZ KAGOVAw TH SUZ KA60VAR2 502 7 gt
54. noise filter P C board Replace the 4 way valve When cooling operation does not work X If the connector CN912 is 1 Disconnect the lead wire leading to the compressor not connected or R V coil 2 3 minutes after turning on the power supply start EMERGENCY i open voltage occurs OPERATION in COOL mode between terminals even when the control is OFF Is there voltage of 230V AC between pin1 and No the 4 2 at connector CN912 Cp Ace Me away Va ve yes 1 Turn off power supply of indoor and outdoor unit and disconnect the connector CN781 in the outdoor electronic control P C board 2 3 minutes after turning on the power supply start EMERGENCY OPERATION in COOL mode Is there voltage 12V DC between the connector CN781 pin 5 and pin 3 Replace the noise filter P C board Replace the outdoor electronic control P C board OC322G 84 SUZ KA50 60 71VAn TH SUZ KA60VAR2 TH When cooling heat exchanger of non operating indoor unit frosts When heating non operating indoor unit get warm T Check of LEV LED display LED1 LED2 Lighting Lighting 6 time Goes out LEV body securely Turn on power supply to the outdoor unit after checking LEV coil is mounted to the v Is click click sound heard Yes Or do you feel vibration of the LEV coil with a hand No Disconnect t
55. of the power to the indoor unit No Yes Y Is there any miswiring poor ES contact wire disconnection Is serial signal error indicated 6 minutes later No gt af tha indoor outdoor connect Correct them Yes ing wire No lt Y A Y Turn OFF the power supply Check once more if the indoor outdoor connecting wire is not miswiring Short circuit outdoor terminal block S2 and S3 X1 31 Miswiring may damage indoor electronic control P C board 2562 As for indoor unit during the operation Be sure to confirm the wiring is correct before the operation Y starts Turn ON the power supply 3X3 Be sure to check this within 3 minutes after turning ON After 3 minutes LED blinks 6 times Even when the inverter P C board or the outdoor electronic control P C board is normal Y LED blinks 6 times after 3 minutes Does the LED on the inverter P C board or outdoor electronic control board Replace the inverter P C board or the repeat 3 6 second OFF and 0 8 second No outdoor electronic control P C board ON quick blinking 3 Lighted LX Yes or not 32 Be careful of the residual voltage of smoothing lighted capacitor Turn OFF the power supply Remove the short circuit between Is there any error of the in outdoor terminal block S2 and S3 door outdoor connecting wire Replace the indoor Turn ON the power supply such as t
56. resistance to LEV coil Replace the LEV coil Outdoor base gets frozen Check the following points before checking electric continuity 1 Does the resistance of ambient temperature thermistor have the characteristics Refer to 12 6 1 2 Is the resistance of defrost heater normal Refer to 12 4 3 Does the heater protector remain conducted not open Check of defrost heater lt SUZ KA25VAH SUZ KA35VAH gt SUZ KA25 35VA H TH 4 Are both ambient temperature thermistor and circuit of defrost heater securely connected to connectors defrost thermistor continue to read 1 C or less In HEAT mode for more than 5 minutes let the ambient temperature thermistor continue to read 5 C or less and let the v Is there 230V AC between CN722 and on the power P C board Refer to 12 6 2 No Is the voltage between 726 on the power P C board 0V DC Refer to 12 6 2 No Replace the inverter P C board OC322G Yes Yes NOTE In case both thermistors are more than the above temperature cool them with cold water etc No problem of the power P C board Replace the power P C board gt 76 21 43 CN726 3 2 1 CN722 a 230V AC ei e 2 LA Outdoor fan motor does not operate or stops i
57. seconds OFF Serial signal The communication fails between the indoor and outdoor unit for 3 minutes Refer to 11 5 How to check mis wiring and serial signal error 11 time flash 2 5 seconds OFF Stop valve Closed valve Closed valve is detected by compressor current Check stop valve 14 time flash 2 5 seconds OFF Outdoor unit Other abnormality Outdoor unit is defective Refer to 12 2 1 Flow chart of the detailed outdoor unit failure mode recall function Outdoor unit stops and restarts 3 min utes later is repeated 2 time flash 2 5 seconds OFF Overcurrent protec tion Large current flows into intelligent power module or compres Sor repeats after 15 seconds when overcurrent protection oc curs within 10 seconds after compressor starts Repeated 24 times at Maximum Reconnect connector of compres Sor Refer to 12 5 How to check in verter compressor eCheck stop valve 3 time ash 2 5 seconds OFF Discharge tempera ture overheat protec tion Temperature of discharge temperature thermistor exceeds 116 C compressor stops Compressor can restart if discharge temperature thermistor reads 100 C or less 3 minutes later eCheck refrigerant circuit and refrig erant amount Refer to 12 5 Check of LEV 4 time flash 2 5 seconds OFF Fin temperature P C board temperature thermistor overheat protection Temperature of fin temperature
58. the compressor winding shorts out 11 time flash Overcurrent protection Overcurrent protection When 14A SUZ KA25VA H 24A SUZ Reconnect compressor connector 2 5 seconds OFF KA35VA H current flow into intelligent eCheck the inverter compressor power module IPM eCheck the stop valve 12 time flash Compressor synchronous When waveform of compressor Reconnect compressor connector 2 5 seconds OFF abnormality current is distorted Check the inverter compressor Compressor start up failure protection Lighting Refrigerant system Discharge temperature When discharge temperature Check the refrigerant circuit and overheat protection exceeds 116 C refrigerant amount Check the LEV Check the outdoor thermistors High pressure High pressure protection When the indoor coil thermistor TH5 Check refrigerant circuit and protection Overheat protection exceeds 70 C in HEAT mode refrigerant amount When the defrost thermistor exceeds Check the stop valve 70 Cin COOL mode Low discharge Low discharge temperature When discharge temperature has Check the refrigerant circuit and temperature protection been 50 or less for 20 minutes refrigerant amount Check the LEV Outdoor fan Outdoor fan protection When outdoor fan has stopped within Check the outdoor fan motor 30 seconds 3 times in a row after Check the inverter P C board outdoor fan start up unit stops Outdoor power Outdoor power system When it consecutively occurs 3 t
59. with a thickness of 0 8 mm Never use any pipe with a thickness less than 0 8mm as the pressure resistance is insufficient Flaring work and flare nut Flaring work pipe differs from that for R22 pipe For details of flaring work refer to Installation manual FLARING WORK Dimension of flare nut mm RATOA Pipe diameter mm 3 Refrigerant oil Apply the special refrigerant oil accessories packed with indoor unit to the flare and the union seat surfaces 4 Air purge Do not discharge the refrigerant into the atmosphere Take care not to discharge refrigerant into the atmosphere during installation reinstallation or repairs to the refrigerant circuit Use the vacuum pump for air purging for the purpose of environmental protection 5 Additional charge For additional charging charge the refrigerant from liquid phase of the gas cylinder If the refrigerant is charged from the gas phase composition change may occur in the refrigerant inside the cylinder and the outdoor unit In this case ability of the refrigerating cycle decreases or normal operation can be impossible However charg ing the liquid refrigerant all at once may cause the compressor to be locked Thus charge the refrigerant slowly Indoor unit Refrigerant gas cylinder operating valve Union Stop valve Outdoor unit Service rae manifold valve for R410A Refrigerant gas cylinder for R41
60. 0A with siphon Refrigerant liquid Electronic scale for refrigerant charging OC322G 6 3 PART NAMES AND FUNCTIONS SUZ KA25VA TH SUZ KA25VAR1 TH SUZ KA35VA TH SUZ KA35VAR1 TH SUZ KA25VAH TH SUZ KA25VAHR1 TH SUZ KA35VAH TH SUZ KA35VAHR1 TH OUTDOOR UNIT ACCESSORIES Air inlet back and side SUZ KA25VA TH SUZ KA35VA TH SUZ KA25VAR1 TH Air outlet SUZ KA35VAR1 TH Drain socket 1 Drain outlet SUZ KASOVA TH 502 5 SUZ KA50VAR2 TH SUZ KA60VA TH SUZ KA60VA1 TH SUZ KA60VAR2 TH SUZ KA71VA TH SUZ KAT71VA TH OUTDOOR UNIT aia ACCESSORIES back and side SUZ KA50VA 1 TH SUZ KA60VA 1 TH SUZ KA71VA 1 TH Drain hose SUZ KASOVAR2Z TH SUZ KA60VAR2 TH Drain socket 1 Drain cap 33 2 iii OC322G 7 4 SPECIFICATION SUZ KA50VA TH SUZ KA25VA H TH SUZ KA25VA H R1 TH SUZ KA35VA H TH SUZ KA35VA H R1 TH SUZ KASOVA TH Outdoor Service Ref Function Cooling Heating Cooling Heating Cooling Heating Cooling Heating Cooling Heating Single phase Single phase Single phase Single phase Single phase 230V 50Hz 230V 50Hz 230V 50Hz 230V 50Hz 230V 50Hz Starting current 1 3 65 3 65 4 75 4 75 6 75 Compressor motor current 1 2 74 3 37 2 74 3 37 4 22 4 42 4 22 442 6 45 6 05 Fan motor curren
61. 12 p y 26 2 WA 21 34 19 24 20 74 2144 11 5 e 194 17 4 18 94 194 5 10 PSD ton 8 17 44 15 74 1704 17 54 os aer o ant t 1554 140 151 1 1554 2 os kaos 5 13 6 12 24 13 24 13 6 8 L EET 11 6 10 5 11 344 11 7 0 6 A mx m 53 10 15 0 5 10 15 lt lt Outdoor intake air Wet bulb temperature ge 55185185 ee 3 NE SE 52 Se Heating capacity 25 3 1 3 15 5 20 s 23 3 12 26 28 2144 1 ee e 28 1941 510 aoe o E 907 28 17 54 ae rb aw 5 155 5 5 13 6 L EET 7 10 5 0 5 10 15 OC322G SUZ KA71VA at Rated frequency Outdoor intake air Wet bulb temperature Input correction factors Input correction factors 1 0 0 9 0 8 0 7 0 6 1 0 0 9 0 8 0 7 0 6 Total input heating erature ve 26 cern 20 oy o 15 2 qoof wr is me 222 l T 10 5 0 5 10 15 Outdoor intake air Wet bulb temperature Total input heating orature 26 temp 20 15 A aite 800 HE 2 l et 10 5 5 10 15 Outdoor intake air Wet b
62. 2 OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 9 15 14 10 16 19 18 17 20 120 OC322G SUZ KA25VA TH SUZ KA35VA TH SUZ KA25VAH TH SUZ KA35VAH TH 15 2 OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS Part number that is circled is not shown in the illustration Symbol Q ty unit Part No Part Name in Wiring SUZ SUZ Remarks Di KA25VAH KA35VA a a MES E12 927 232 CABINET 1 1 E12 927 521 GRILLE 1 1 E12 927 501 PROPELLER FAN 1 1 12 927 290 BASE 1 E12 928 290 BASE E12 927 900 COMPRESSOR KNB073FDVHC E12 929 900 COMPRESSOR KNB092FCAH E12 065 506 COMPRESSOR RUBBER SET 3RUBBERS SET E12 927 661 STOP VALVE GAS 49 52 E12 927 662 STOP VALVE LIQUID 6 35 E12 927 245 SERVICE PANEL E12 927 233 BACK PANEL E12 927 640 EXPANSION VALVE E12 838 640 EXPANSION VALVE E12 927 493 EXPANSION VALVE COIL E12 927 961 4 WAY VALVE E12 928 079 THERMO HOLDER E12 930 079 THERMO HOLDER E12 928 525 CONDENSER WIRE NET E12 930 525 CONDENSER WIRE NET E12 928 523 CONDENSER NET E12 930 523 CONDENSER NET E12 838 523 CONDENSER NET E12 929 523 CONDENSER NET E12 927 293 SEPARATOR E12 928 293 SEPARATOR E12 929 293 SEPARATOR E12 930 293 SEPARATOR E12 927 515 MOTOR SUPPORT E12 929 515 MOTOR SUPPORT E12 927 297 TOP PANEL E12 927 630 OUTDOOR HEAT EXCHANGER E12 929 630 OUTDOOR HEAT EXCHAN
63. 21 18 2 25 1 00 718 20 2 11 0 88 738 22 1 9410 76 773 24 1 73 0 64 794 26 1 48 0 52 821 18 2 2511 00 718 20 2 2110 92 738 22 2 04 0 80 773 24 1 8410 68 794 26 1 60 0 56 821 18 2 25 1 00 718 20 2 30 0 96 738 22 2 1410 84 773 24 1 94 0 72 794 26 1 711 0 60 821 18 2 25 1 00 718 20 2 40 1 00 738 22 2 24 0 88 773 24 2 05 0 76 794 26 1 82 0 64 821 Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W WB Wet bulb temperature OC322G 40 PERFORMANCE DATA COOLING operation at Rated frequency SLZ KA35VA L SUZ KA35VA H CAPACITY 3 5 kW INPUT 1060 W SHF 0 77 OUTDOOR D B C INDOOR INDOOR 25 27 D B C W B C SHF INPUT Q SHC 21 18 0 59 890 2 23 21 20 0 47 943 1 88 22 18 0 63 890 2 38 22 20 0 51 943 2 03 22 22 0 39 981 1 64 23 18 0 67 890 2 53 23 20 0 55 943 2 19 23 22 0 43 981 1 81 24 18 0 71 890 2 68 24 20 0 59 943 2 35 24 22 0 47 981 1 97 24 24 0 35 1018 1 54 25 20 0 63 943 2 51 25 22 0 511 981 2 14 25 24 0 39 1018 1 72 26 18 0 79 890 2 99 26 20 0 67 943 2 67 26 22 0 55 981 2 31 26 24 0 43 1018 1 90 26 26 0 31 1071 1 43 27 18 0 83 890 3 14 27 20 0 71 943 2 83 27 22 0 591 981 2 48 27 24 0 47 1018 2 07 27 26 0 35 1071 1 62 28 18 0 87
64. 2171 2289 2242 2336 2454 9 32 8 91 8 51 56 2384 2454 2572 10 ACTUATOR CONTROL SUZ KA25VA H SUZ KA35VA H SUZ KA50VA SUZ KA60VA SUZ KA71VA 10 1 Outdoor fan motor control The fan motor turns ON OFF interlocking with the compressor ON The fan motor turns ON 5 seconds before the compressor starts up OFF The fan motor turns OFF 15 seconds after the compressor has stopped running 5 seconds 15 seconds ON H H H H lt gt Compressor OFF ON Outdoor fan OFF 10 2 R V coil control Heating ect NOTE The 4 way valve reverses for 5 seconds right before Cooling OFF start up of the compressor Dry kr OFF lt COOL gt lt HEAT gt 5 seconds 5 seconds ON A S 4 Compressor i H H R V coil ON ON or Outdoor fan LL j 2 motor OFF 10 3 Relation between main sensor and actuator SUZ KA25VA H TH SUZ KA35VA H TH Actuator Sensor Purpose Outdoor Indoor Defrost Compressor fan motor RV coil tan motor heater Discharge temperature thermistor Protection Indoor pipe temperature thermistor Cooling Coil frost prevention Heating High pressure protection Defrost thermistor Cooling High pressure protection Heating Defrosting Fin temperature thermist
65. 3 37 0 44 2829 26 2 59 0 32 2927 18 5 37 0 84 2558 20 4 91 0 72 2632 22 4 35 0 60 2755 24 3 68 0 48 2829 26 2 91 0 36 2927 18 5 62 0 88 2558 20 5 18 0 76 2632 22 4 63 0 64 2755 24 3 99 0 52 2829 26 3 24 0 40 2927 18 5 88 0 92 2558 20 5 45 0 80 2632 22 4 92 0 68 2755 24 4 29 0 56 2829 26 3 56 0 44 2927 18 6 13 0 96 2558 20 5 73 0 84 2632 22 5 21 0 72 2755 24 4 60 0 60 2829 26 3 89 0 48 2927 18 6 39 1 00 2558 20 6 00 0 88 2632 22 5 50 0 76 2755 24 4 91 0 64 2829 26 4 21 0 52 2927 NOTE Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W WB Wet bulb temperature OC322G 54 PERFORMANCE DATA HEATING operation SLZ KA25VA L SUZ KA25VA H at Rated frequency CAPACITY 3 0 kW INPUT 830 W OUTDOOR W B C 10 5 0 5 Q INPUT Q INPUT INPUT INPUT 1 89 1 80 1 62 540 581 623 SLZ KA35VA L SUZ KA35VA H CAPACITY 4 0 kW INPUT 1100 W 2 28 2 16 2 01 647 689 730 730 764 805 at Rated frequency 789 822 863 OUTDOOR W B C 0 5 Q JINPUT INPUT 968 1012 1067 SLZ KASOVA L SUZ KASOVA at Rated frequenc
66. 30 1565 5 80 1 74 18 0 70 1369 4 97 3 48 20 0 58 1451 5 24 3 04 22 0 46 1508 5 52 2 54 24 0 34 1565 5 80 1 97 26 0 22 1646 6 07 1 34 18 0 74 1369 4 97 3 68 20 0 62 1451 5 24 3 25 22 0 50 1508 5 52 2 76 24 0 38 1565 5 80 2 20 26 0 26 1646 6 07 1 58 18 0 78 1369 4 97 3 88 20 0 66 1451 5 24 3 46 22 0 54 1508 5 52 2 98 24 0 42 1565 5 80 2 43 26 0 30 1646 6 07 1 82 18 0 82 1369 4 97 4 07 20 0 70 1451 5 24 3 67 22 0 58 1508 5 52 3 20 24 0 46 1565 5 80 2 67 26 0 34 1646 6 07 2 06 18 0 86 1369 4 97 4 27 20 0 74 1451 5 24 3 88 22 0 62 1508 5 52 3 42 24 0 50 1565 5 80 2 90 26 0 38 1646 6 07 2 31 18 0 90 1369 4 97 4 47 20 0 78 1451 5 24 4 09 22 0 66 1508 5 52 3 64 24 0 54 1565 5 80 3 13 26 0 42 1646 6 07 2 55 18 0 94 1369 4 97 4 67 20 0 82 1451 5 24 4 30 22 0 70 1508 5 52 3 86 24 0 58 1565 5 80 3 36 26 0 46 1646 6 07 2 79 NOTE Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W WB Wet bulb temperature OC322G 43 PERFORMANCE DATA COOLING operation at Rated frequency SLZ KA50VA L SUZ KA50VA CAPACITY 4 6 KW INPUT 1630 W SHF 0 68 OUTDOOR D B
67. 39 0 71 1134 22 2 11 0 59 1187 24 1 78 0 47 1219 26 140 0 35 1261 18 2 74 0 87 1102 20 2 52 0 75 1134 22 2 25 0 63 1187 24 193 0 51 1219 26 1 56 0 39 1261 18 2 87 0 91 1102 20 2 65 0 79 1134 22 2 39 0 67 1187 24 2 08 0 55 1219 26 1 72 0 43 1261 18 2 99 0 95 1102 20 2 79 0 83 1134 22 2 53 0 71 1187 24 2 23 0 59 1219 26 1 88 0 47 1261 18 3 12 0 99 1102 20 2 92 0 87 1134 22 2 68 0 75 1187 24 2 38 0 63 1219 26 2 03 0 51 1261 18 3 15 1 00 1102 20 3 06 0 91 1134 22 2 82 0 79 1187 24 2 53 0 67 1219 26 2 49 0 55 1261 NOTE Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W WB Wet bulb temperature OC322G 42 PERFORMANCE DATA COOLING operation at Rated frequency SLZ KA50VA L SUZ KA50VA CAPACITY 4 6 kW INPUT 1630 W SHF 0 68 OUTDOOR D B C INDOOR 25 27 W B C SHF JINPUTI Q SHC 18 0 50 1369 4 97 2 48 20 0 38 1451 5 24 1 99 18 0 54 1369 4 97 2 68 20 0 42 1451 5 24 2 20 22 0 30 1508 5 52 1 66 18 0 58 1369 4 97 2 88 20 0 46 1451 5 24 2 41 22 0 34 1508 5 52 1 88 18 0 62 1369 4 97 3 08 20 0 50 1451 5 24 2 62 22 0 38 1508 5 52 2 10 24 0 26 1565 5 80 1 51 20 0 54 1451 5 24 2 83 22 0 42 1508 5 52 2 32 24 0
68. 41 1798 6 60 2 71 30 18 0 93 1495 5 40 5 02 30 20 0 81 1584 5 70 4 62 30 22 0 69 1647 6 00 4 14 30 24 0 57 1709 6 30 3 59 30 26 0 45 1798 6 60 2 97 31 18 0 97 1495 5 40 5 24 31 20 0 85 1584 5 70 4 85 31 22 0 73 1647 6 00 4 38 31 24 0 61 1709 6 30 3 84 31 26 0 49 1798 6 60 3 23 32 18 1 00 1495 5 40 5 40 32 20 0 89 1584 5 70 5 07 32 22 0 77 1647 6 00 4 62 32 24 0 65 1709 6 30 14 10 32 26 0 53 1798 6 60 3 50 NOTE Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W WB Wet bulb temperature OC322G 49 PERFORMANCE DATA COOLING operation at Rated frequency SEZ KA50VA SUZ KA50VA CAPACITY 5 0 kW INPUT 1780 W SHF 0 75 OUTDOOR D B C INDOOR 40 W B C Q SHC SHF INPUT 18 20 4 50 4 80 2 57 2 16 0 57 0 45 1851 1905 18 20 22 4 50 4 80 5 10 2 75 2 35 1 89 0 61 0 49 0 37 1851 1905 1994 18 20 22 4 50 4 80 5 10 2 93 2 54 2 09 0 65 0 53 0 41 1851 1905 1994 18 20 22 24 4 50 4 80 5 10 5 40 3 11 2 74 2 30 1 78 0 69 0 57 0 45 0 33 1851 1905 1994 2047 20 22 24 4 80 5 10 5 40 2 93 2 50 2 00 0 61 0 49 0 37 1905 1994 2047 18 20 22 24
69. 5 Inverter does not operate 7 Check of power supply isconnect the connector CN61 between compressor and intelligent power module For wireless remote controller use model Turn ON power supply and press S3 EMERGENCY OPERATION switch For wired remote controller use model connecting Turn ON the power supply and press the Rectify indoor outdoor wire 51 TEST button twice connecting wire f Ves Is there voltage 230V AC Outdoor terminal block Does POWER lamp on the No between the indoor No ptt ihe na indoor unit light up2 terminal block S1 and S GCITODIC CONTO P C board 2 Yes Is there voltage 280V 370V DC z between DB61 and Yes s E inverter Replace the inverter DB61 on the iet ALL eee P C board inverter P C board flash Refer Refer to 12 6 1 Yes 280V 370V DC Check the electric Of If flash refer to parts in main circuit 12 3 Inverter P C board Solder side OC322G 74 SUZ KA25 35VA H TH Outdoor unit does not operate at all or stops immediately due to over current Check of current limiting resistor When the current limiting resistor is open the rush current limiting relay X64 may not work properly Does the current limiting resistor Turm ON Wie power
70. 5 seconds OFF Low discharge temperature protection When discharge temperature has been 50 C or less for 20 minutes Refer to 12 5 Check of LEV Check refrigerant circuit and refrigerant amount 8 time flash 2 5 seconds OFF PAM protection PAM Pulse Amplitude Modulation When the overcurrent flows into IGBT Insulated Gate Bipolar transistor TR821 or when the bus bar voltage reaches 320V or more PAM stops and restarts This is not malfunction PAM protection will be activated in the following cases Instantaneous power voltage drop Short time power failure When the power supply voltage is high 9 time flash 2 5 seconds OFF Inverter check mode When the connector of compressor is disconnected inverter check mode starts The flashing frequency shows the number of times the LED blinks after every 2 5 second OFF Example When the flashing frequency is 2 OC322G 0 5 second ON E 0 5 second ON Check if the connector of the compressor is correctly connected Refer to 12 5 0 How to check inverter compressor SUZ KA50VA SUZ KA60VA SUZ KA71VA Except for SUZ KA50VAR2 TH Indication Symptom LED1 Red LED2 Yellow Abnormal point Condition Condition Correspondence Outdoor unit does not operate Lightning Outdoor power system When IPM protection stop or lock protection stop is continuously performed three ti
71. 50x330 Weight 53 53 53 58 Sound level 1 53 51 55 53 53 51 55 53 53 51 55 53 53 51 55 53 Fan speed High High Med Low 800 480 800 620 800 480 800 620 800 480 800 620 800 480 800 620 Fan speed regulator 2 2 2 2 Refrigerant filling capacity R410A Refrigerating oil Model 450 NEO22 FLDH 450 FLDH1 600 22 450 NEO22 870 NEO22 NOTE Test conditions are based on ISO 5151 Cooling Indoor D B 27 C W B 19 C Outdoor D B 35C W B 24 C Heating Indoor D B 20 C W B 15 C Outdoor D B 7C W B 6C Refrigerant piping length one way 5m 1 Measured under rated operating frequency Reference value 1 60 1 80 1 80 2 00 OC322G 9 Specifications and rating conditions of main electric parts SUZ KA25VA TH SUZ KA25VAH TH SUZ KA35VA TH SUZ KA35VAH TH iiam SUZ KA25VA TH SUZ KA25VAH TH SUZ KA35VA TH SUZ KA35VAH TH Current transformer CT ETA19Z59BZ Current transformer CT761 CT781 ETQ19Z71AY Smoothing capacitor C63A C63B C63C 620uF 420V Diode module DB61 DB65 D25xB60 Fuse F61 250V 20A Fuse F71 F801 F901 250V 3 15A Defrost heater H 230V 130W 230V 130W Intelligent power module IPM PS21244 A 203 Expansion valve coil LEV CAD MD12ME 12VDC Reactor L61 10A 23 0mH Current detecting resistor R61 45mQ 5W 1 element 50mQ 5W 2 eleme
72. 57 0 41 2332 18 4 95 14 60 0 93 2038 20 5 28 4 28 0 81 2097 22 5 61 3 87 0 69 2195 24 5 94 3 39 0 57 2254 26 6 27 2 82 0 45 2332 18 4 95 4 80 0 97 2038 20 5 28 4 49 0 85 2097 22 5 61 14 10 10 73 2195 24 5 94 3 62 10 61 2254 26 6 27 3 07 0 49 2332 18 4 95 4 95 1 00 2038 20 5 28 4 70 0 89 2097 22 5 61 14 32 10 77 2195 24 5 94 3 86 10 65 2254 26 6 27 3 32 0 53 2332 NOTE Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity kW INPUT Total power input W WB Wet bulb temperature OC322G 52 PERFORMANCE DATA COOLING operation at Rated frequency SEZ KA71VA SUZ KA71VA CAPACITY 7 1 kW INPUT 2460 W SHF 0 74 OUTDOOR D B C INDOOR 25 27 W B C SHF INPUT Q SHC 18 0 56 2066 4 29 20 0 44 2189 3 56 18 0 60 2066 4 60 20 0 48 2189 3 89 22 0 36 2276 3 07 18 0 64 2066 4 91 20 0 52 2189 4 21 22 0 40 2276 3 41 18 0 68 2066 5 21 20 0 56 2189 4 53 22 0 44 2276 3 75 24 0 32 2362 2 86 20 0 60 2189 4 86 22 0 48 2276 4 09 24 0 36 2362 3 22 18 0 76 2066 5 83 20 0 64 2189 5 18 22 0 52 2276 4 43 24 0 40 2362 3 58 26 0 28 2485 2 62 18 0 80 2066 6 13 20 0 68 2189 5 50 22 0 56 2276 24 0 44 2362 3 94 26 0 32 2485 3 00 18 0 84 2066 6 44 20 0 72 2189 5 83
73. 5VAR1 TH 35VAHR1 TH G E12 838 704 DRAIN SOCKET 1 1 SUZ KASOVA TH SUZ KAS50VA1 TH SUZ KAS0VAR2 TH SUZ KA60VA TH SUZ KA60VA1 TH SUZ KA60VAR2 TH SUZ KA71VA TH SUZ KAT71VA TH 15 8 ACCESSORY Symbol Q ty unit Part No Part Name in Wiring 502 50 60 SUZ KA71 Remarks Diagram VAw TH VAR2 TH E12 817 704 DRAIN SOCKET 1 1 1 E12 444 705 DRAIN CAP 2 2 2 33 2PCS SET sa MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Aug 2011 322 REVISED EDITION G Distributed in Oct 2009 No 0C322 REVISED EDITION F PDF 6 Distributed in Apr 2009 No 0C322 REVISED EDITION E PDF 6 Distributed in Nov 2008 No 0C322 REVISED EDITION D PDF 6 Distributed in Mar 2007 No 0C322 REVISED EDITION C PDF 7 Distributed in Oct 2006 No 0C322 REVISED EDITION B PDF 7 Distributed in Oct 2005 322 REVISED EDITION A PDF 8 New publication effective Aug 2011 Distributed in Apr 2005 No OC322 PDF 8 Specifications subject to change without notice Made in Japan
74. 61 STOP VALVE GAS 29 52 E12 D58 662 STOP VALVE LIQUID 26 35 E12 927 245 SERVICE PANEL E12 927 233 BACK PANEL E12 927 640 EXPANSION VALVE E12 927 493 EXPANSION VALVE COIL E12 D65 961 4 WAY VALVE 02 gt gt gt gt gt 09 03 E12 928 079 THERMO HOLDER gt gt 0 E12 930 079 THERMO HOLDER E12 928 525 CONDENSER WIRE NET E12 930 525 CONDENSER WIRE NET E12 B83 523 CONDENSER NET E12 929 523 CONDENSER NET E12 928 523 CONDENSER NET E12 930 523 CONDENSER NET E12 D69 293 SEPARATOR E12 C34 293 SEPARATOR E12 D77 293 SEPARATOR E12 C36 293 SEPARATOR E12 927 515 MOTOR SUPPORT E12 929 515 MOTOR SUPPORT E12 927 297 TOP PANEL E12 D69 630 OUTDOOR HEAT EXCHANGER E12 D70 630 OUTDOOR HEAT EXCHANGER E12 D69 301 OUTDOOR FAN MOTOR RC0J50 00 E12 C36 526 DEFROST HEATER E12 C36 381 HEATER PROTECTOR E12 927 937 CAPILLARY TUBE 93 0 x 22 0 x 240 G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G E12 735 936 OC322G CAPILLARV TUBE 125 93 0 x 21 8 x 600 SUZ KASOVA TH SUZ KA60VA TH SUZ KA71VA TH SUZ KA60VAR2
75. 61 RT62 DEFROST DISCHARGE N e E12 D58 309 AMBIENT TEMPERATURE THERMISTOR RT65 gt gt gt gt gt gt gt jis gt gt gt gt gt gt gt N E12 C34 307 OUTDOOR HEAT EXCHANGER TEMPERATURE THERMISTOR RT68 N N E12 735 241 FUSE HOLDER N E12 735 382 FUSE F61 T20AL250V N A E12 927 374 TERMINAL BLOCK TB1 3P E12 D69 374 TERMINAL BLOCK TB2 3P E12 524 451 INVERTER P C BOARD Including heatsink and RT64 E12 D58 337 REACTOR L61 E12 D58 233 BACK PANEL OUT E12 817 009 HANDLE E12 851 515 MOTOR SUPPORT E12 851 936 CAPILLARY TUBE TAPER PIPE 3 6 x 22 4 x 50 E12 784 382 FUSE T3 15AL250V 2 G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G E12 661 385 OC322G VARISTOR 129 gt gt gt gt gt gt gt gt gt gt gt SUZ KA25VA TH SUZ KA35VA TH SUZ KA25VAR1 TH SUZ KA35VAR1 TH SUZ KA25VAH TH SUZ KA35VAH TH SUZ KA25VAHR1 TH SUZ KA35VAHR1 TH 15 7 DRAIN SOCKET Outdoor unit 642 drain hole UNE _ s Soft vinyl chloride hose of 25mm inside diameter Q tylunit Symbol Parts N in Wiring aris wame 25VA TH 25VAH TH 35VA TH 35VAH TH Remarks Diagram 25VAR1 TH 25VAHR1 TH 3
76. 75 26 5 24 2 41 0 46 1940 NOTE Q Total capacity KW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W WB Wet bulb temperature OC322G 44 PERFORMANCE DATA COOLING operation at Rated frequency SEZ KC25VA SUZ KA25VA H CAPACITY 2 5 kW INPUT 730 W SHF 0 74 OUTDOOR D B C INDOOR 25 27 W B C SHF JINPUTI Q SHC 18 0 56 613 1 51 20 0 44 650 1 25 18 0 60 613 1 62 20 0 48 650 1 37 22 0 36 675 1 08 18 0 64 613 1 73 20 0 52 650 1 48 22 0 40 675 1 20 18 0 68 613 1 84 20 0 56 650 1 60 22 0 44 675 1 32 24 0 32 701 1 01 20 0 60 650 1 71 22 0 48 675 1 44 24 0 36 701 1 13 18 0 76 613 2 05 20 0 64 650 1 82 22 0 52 675 1 56 24 0 40 701 1 26 26 0 28 737 0 92 18 0 80 613 2 16 20 0 68 650 1 94 22 0 56 675 1 68 24 0 44 701 1 39 26 0 32 737 1 06 18 0 84 613 2 27 20 0 72 650 2 05 22 0 60 675 1 80 24 0 48 701 1 51 26 0 36 737 1 19 18 0 88 613 2 38 20 0 76 650 2 17 22 0 64 675 1 92 24 0 52 701 1 64 26 0 40 737 1 32 18 0 92 613 2 48 20 0 80 650 2 28 22 0 68 675 2 04 24 0 56 701 1 76 26 0 44 737 1 45 18 0 96 613 2 59 20 0 84 650 2 39 22 0 72 675 2 16 24 0 60 701 1 89 26 0 48 737 1 58 18 1 00 613 2 70 20 0 88 650 2 51 22 0 76 675 2 28 24 0 64 701 2 02 26 0 52 737 1 72 NOTE Q Total capacity kW SHF Se
77. 7C W B 19 C Outdoor 35 C W B 24 C Heating Indoor D B 20C W B 15 C Outdoor D B 7C W B 6C Refrigerant piping length one way 5m 1 Measured under rated operating frequency Reference value OC322G 8 SUZ KA60VA TH SUZ KA71VA TH SUZ KASOVAR2Z TH SUZ KA60VAR2 TH Outdoor Service Ref SUZ KA60VA TH SUZ KA71VA1 TH Function Cooling Heating Cooling Heating Cooling Heating Cooling Heating Single phase Single phase Single phase Single phase 230V 50Hz 230V 50Hz 230V 50Hz 230V 50Hz Starting current 1 6 75 9 75 9 75 10 30 Compressor motor current 1 6 45 6 05 8 05 9 45 8 05 9 45 10 00 9 60 Fan motor current 1 0 30 0 30 0 30 0 30 Model SNB130FGBH T SNBI30FLDH or SNB130FLDH1 SNB130FGBH T TNB220FMCH T Output 900 850 900 1300 Winding U V 0 98 U W 0 98 U V 0 45 U W0 45 U V 0 98 U W 0 98 U V 1 41 U W 1 41 resistance at 20 C V W 0 98 V W 0 45 V W 0 98 V W 1 41 Model RCOJ60 AA RCOJ60 AA RCOJ60 AA RCOJ60 AA WHT BLK 15 2 WHT BLK 15 2 WHT BLK 15 2 WHT BLK 15 2 BLK RED 15 2 BLK RED 15 2 BLK RED 15 2 BLK RED 15 2 RED WHT 15 2 RED WHT 15 2 RED WHT 15 2 RED WHT 15 2 Power supply Electrical data Compressor Winding resistance at 20 C Fan motor Air flow High Lowx 2 940 1 650 2 940 2 210 2 940 1650 2 940 2 210 2 940 1650 2 940 2 210 2 940 1650 2 940 2 210 city Dimensions WxHxD 840x850x330 840x850x330 840x850x330 840x8
78. 9NI1093130 1N38009 6268 9868 010 31000 30010 9980 1980 30151938 9 1193130 1 69 8 8055484402 JW u0119VdV9 ONTHLOOWS 69 0 30151938 9NI12311Q INJHUNI 198 1109 3A1VA NOISNVdX3 1 HIWHOJSNVUL INJHUNI 19 10805 WYN 108845 3AVN 108NA5 dW ae 6918 B 1 Ot 150 IDM EYINI DD Ti 1 Y t 90 9 4 HILHJANI WdI 191 d 001 a A XB 1063 IW AA TM T 151 p M el 20801 299 699 d91 16 OC322G JOJPOBUUND ejeoipui Ao q SJOQWAS 104 sn z BUIDIAJOS YOLSISAY ONILOALAG LNAYYNO Le8 L94 4ATVA NOISNVdX3 A31 YOLSINYSHL 34 VS3dIN3 L LN3ISIAV 9914 JINGOW YAMOd LN3SITI3LNI 6 YOLOALOYd H3J1V3H H9c HOLSINHIHL vOLY YAMOd LNASITISLNI 0821 YALVAH LSO4d3G H YOLSINYSHL SUNLVYSdWAL 2914 A0SZTVS I L ISNA 10641084 MOO 3NT1VA SNISHA3A3H YOLSINWYAHL LSO833Q 1914 A0SZTVS I L 3514 113 AV 1391 99X P9X 9X HOLSIHVA VOMN COMNN AOSZ1VOZL 3Snd L94 HINHOA4HSNVHL L081 YOLOW YOOALNO JN dons HOLSISNVHL H3MOd ONIHOLIMS 2891 HOSSAHANOD OIN FINGOW 198 52078 I
79. Between CN663 pin1 and pin2 on the outdoor electronic control P C board Fan motor does not operate or stops operating shortly after starting the operation W Check of outdoor fan motor Check the connection between the connector CN931 and CN932 Is the resistance between each terminal N Yes of outdoor fan motor normal Disconnect CN932 from outdoor electronic control board and turn on the power supply Rotate the outdoor fan motor manually and measure the voltage of CN931 Between and Between 2 and Between and No Fixed to either SV or 0V DC Does the voltage between each terminal become 5V DC and 0V DC repeatedly Yes Does the outdoor fan motor rotates smoothly Yes Replace the outdoor DC fan motor Replace the outdoor electronic control P C board OC322G 86 X Check of HPS SUZ KA60VAR2 TH SUZ KA71VA 1 TH SUZ KA50 60 71VAq TH SUZ KA60VAR2 TH When the operation frequency does not go up from lowest frequency Check the resistance between each terminal Infinity 1 Disconnect the connector CN681 in the electronic control P C board 2 Check the resistance of HPS after 1 minutes have passed since the outdoor unit power supply was turned off Reconnect CN681 Turn on power supply to the indoor and outdoor unit 3 minutes later starts
80. Check of compressor winding e Disconnect the connector CN61 between the compressor and intelligent power module and measure the resistance between the compressor terminals lt lt Measurement point gt gt at 3 points BLK WHT BLK RED Measure the resistance between the lead wires at 3 points WHT RED lt lt Judgement gt gt Refer to 12 4 0 Q Abnormal short Infinite D Abnormal open NOTE Be sure to zero the ohmmeter before measurement lt lt Judgement gt gt f Check of compressor operation time eConnect the compressor and activate the inverter Then measure the 1 second time until the inverter stops due to over current Con failure Operation method 2 seconds Compressor winding short Start heating or cooling operation by pressing EMERGENCY Abnormal OPERATION switch on the indoor unit TEST RUN OPERATION Refer to page 31 for SLZ SUZ and page 37 SEZ SUZ lt lt Measurement gt gt Measure the time from the start of compressor to the stop of 46 d C compressor due to overcurrent Seconcs Disconnected connector Starting defe lock out Starting defect Abnormal Refrigerant circuit defect Closed valve 10 minutes g Check of outdoor thermistors Disconnect the connector of thermistor in the outdoor P C board see below table and measure the resistance of thermistor Y Replace the thermisto
81. DG G ac e o EJ ATI c aux DI co s Cu ius e Del Oe Di BI 25 VI o BQ o A G 5 9 c 99 om 2 ER 9 X A itl oi 3 E 4 GZE VOE uone ejsut 13 OC322G SUZ KASOVA TH SUZ KASOVA1 TH SUZ KA50VAR2 TH Unit mm SUZ KA60VA TH SUZ KA60VA1 TH SUZ KA60VAR2 TH SUZ KA71VA TH SUZ KAT71VA TH OUTDOOR UNIT REQUIRED SPACE Open as a rule Drain holes 433 500mm or more if the front and both sides are open 100mm or more 200mm or more if there are obstacles to both sides Open as a rule 500mm or more if the back 350mm or more both sides and top are open X NV Y Ss i Service panel NS ii J SS Liquid refrigerant pipe joint Refrigerant pipe flared 6 35 SUZ KA50 KAG60VA 49 52 SUZ KA71VA A ZN i Gas refrigerant pipe joint Refrigerant pipe flared 12 7 SUZ KASOVA 15 88 SUZ KA60 KA71VA OC322G 14 WIRING DIAGRAM 7 MODELS WIRING DIAGRAM SUZ KA25VA TH SUZ KA35VA TH 0 JoJo 91193 epis JOOPUI JNOQV S3LON JOJOBUUND BUIDIAJOS 10 WEJBBIP ULJIM 2 JIUN JOOPUI
82. E07 223 450 OUTDOOR ELECTRONIC CONTROL P C BOARD E02 935 374 TERMINAL BLOCK E02 823 375 TERMINAL BLOCK E02 851 337 REACTOR L E02 935 444 NOISE FILTER P C BOARD E02 935 309 AMBIENT TEMPERATURE THERMISTOR RT65 E02 851 308 THERMISTOR SET RTG2RT6S E02 935 440 POWER BOARD E02 819 233 BACK PANEL OUT E02 817 009 HANDLE E02 851 515 MOTOR SUPPORT E02 127 382 FUSE F801 E02 737 382 FUSE F911 E02 935 385 FUSE amp VARISTOR F64 NR64 250V 2A E02 851 936 CAPILLARY TUBE TAPER PIPE 43 6 42 4 50 E02 853 936 CAPILLARY TUBE TAPER PIPE 43 6 42 4 50 E02 861 936 CAPILLARY TUBE Z1 8xZ0 6x1000 o AJO N j gt a e DEFROST DISCHARGE OUTDOOR HEAT EXCHANGER Including heat sink and RT64 250V 3 15A 250V 1A h gt gt gt gt gt gt gt lt gt gt gt lt gt ma gt jj 22 117 SUZ KA25VA TH SUZ KA35VA TH 14 4 DRAIN SOCKET Outdoor unit 42 drain hole Soft vinyl chloride hose of 25mm inside diameter Q ty unit in Wiring Diagram 11 02 838 704 DRAIN SOCKET 1 1 Parts No Parts Name Remarks SUZ KA25VA TH SUZ KA35VA TH SUZ KASOVA TH 1 2 SUZ KA60VA TH SUZ KA71VA TH 14 5 ACCESSO
83. EPARATOR R V COIL R V COIL 4 WAY VALVE 4 WAY VALVE VALVE COVER SERVICE PANEL OUTDOOR ELECTRONIC CONTROL P C BOARD OUTDOOR ELECTRONIC CONTROL P C BOARD OUTDOOR ELECTRONIC CONTROL P C BOARD OUTDOOR ELECTRONIC CONTROL P C BOARD OUTDOOR ELECTRONIC CONTROL BOARD OUTDOOR ELECTRONIC CONTROL P C BOARD OUTDOOR ELECTRONIC CONTROL P C BOARD TERMINAL BLOCK TERMINAL BLOCK TERMINAL BLOCK REACTOR L NOISE FILTER P C BOARD AMBIENT TEMPERATURE THERMISTOR RT65 THERMISTOR SET RT61 RT62 RT68 DEFROST DISCHARGE OUTDOOR HEAT EXCHANGER POWER BOARD Including heatsink and RT64 POWER BOARD Including heatsink and RT64 BACK PANEL OUT BACK PANEL OUT HANDLE MOTOR SUPPORT FUSE F801 250V 3 15A FUSE F801 250V 3 15A FUSE F911 250V 1A FUSE F911 250V 1A FUSE amp VARISTOR F64 NR64 250V 2A FUSE amp VARISTOR F64 NR64 250V 2A o G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G CAPILLARY TUBE TAPER PIPE 93 6 2 4 50 CAPILLARY TUBE TAPER PIPE 93 6 42 4 50 OC322G CAPILLARV TUBE 127 1 8x40 6x1000 15 6 OUTDOOR UNIT STRUCTURAL PARTS
84. GER E12 927 301 OUTDOOR FAN MOTOR RCOJ50 E12 840 526 DEFROST HEATER E12 840 381 HEATER PROTECTOR E12 927 937 CAPILLARY TUBE 93 0 2 0 240 E12 735 936 CAPILLARY TUBE 3 0x41 8x600 o 22 121 SUZ KA25VAR1 TH SUZ KA35VAR1 TH SUZ KA25VAHR1 TH SUZ KA35VAHR1 TH 15 3 OUTDOOR UNIT ELECTRICAL PARTS OC322G 122 SUZ KA25VAR1 TH SUZ KA35VAR1 TH SUZ KA25VAHR1 TH SUZ KA35VAHR1 TH 15 3 OUTDOOR UNIT ELECTRICAL PARTS Part numbers that are circled are not shown in the illustration z Part No Part Name Symbol in Wiring Diagram Q tylunit SUZ KA VAR1 TH SUZ KA VAHR1 TH 25 35 25 35 Remarks E12 838 337 REACTOR L61 1 1 1 1 E12 C34 306 THERMISTOR SET RT61 RT62 1 1 DEFROST DISCHARGE E12 927 308 AMBIENT TEMPERATURE THERMISTOR RT65 1 1 E12 C34 307 OUTDOOR HEAT EXCHENGER TEMPERATURE THERMISTOR RT68 E12 C34 490 R V COIL 2154 12 735 241 FUSE HOLDER E12 735 382 FUSE F61 T20AL250V E12 D69 374 TERMINAL BLOCK TB1 3P 1 2 3 4 5 6 7 8 9
85. H SUZ KA35VAHR1 TH Smoothing Smoothing Smoothing Heater i connector Back side of unit DB61 a oa an Fuse F701 CN722 DC 260 300 V 250V3 15A SUZ KA25 35 C VAHR1 TH 250 V 3 15 A R V coil CN721 ENS TE 230 Pa 8 i DC260 300V QV pae 75 E 5 509 ic TE Fuse F901 C Er Ee 250 V 3 15 Eds hoe Simca S E HERE an a UM RENS dE 3 din Outputto E T em oiu a S pes drive B P c oie ae ae compressor JE 1 11 Ban x LDU S UT CUTE s AC 230 V ED 1 ew eee Di Vm LDW 31 wi 9 us EE a Tm 00 2 i O FO 5 PoUvul 00000 fu gel Padi i IE D Bu LL T z EM d j EB jg in 5 s 5 5 LEV LED Jumper wire for E amp px So o t connector monitor changing defrost 95 ge oO 89 CN724 lamp setting JS Front side of unit 22 EDN 9 EK s O oo 2 lt or oo SES Soe Se 17 25 ESO
86. I C M 17 OC322G SUZ KA25VAHR1 TH SUZ KA35VAHR1 TH U0123108d H31V3H H92 UOISINH3HI dW3l ET 1102 22 291 H31V3H 1508330 H U3ONVHOX3 LV3H Y0001N0 HOLIVJU 191 1102 YST 15 1 dWIL IN3IGAV S918 3008 U3MOd 1N3SITI31NI 26691 Wdl AIEE 99X 79 X YOLSIWYJHL dWIL 7918 391A30 HIMOA 1N39IT131NI 20821 U3NUOJSNVUI 1081 HOISINU3HI dW3l 398VHOSIO 291 EL 3504 1063 1003 1004 HOLSISNVUL HJMOd ONIHOLIMS ___ 12841 1509330 1918 WOel 394 193 3oolq TT 39018 WNIWHIL 281 181 0112341084 1100810 59919 9214 H3880S8V 39305 Ysa BJEOIDUI Wojeq SJOQWAS UOISIS3U 9 1193130 669 BEGY HOLOW NVJ W FINGOW 30010 5980 1980 104 pc 40151534 941193130 1 868 S28H HOSSIHAWDI ON UOLIOVdV9 SNIHIOONS 69 09 Ce E E 40151534 9N1123130 1N3HH 194 1103 3ATVA NOISNVdX3 31 IN38U02 12 19491 UIJIM epis JOOPUI 99 noqv S3LON 3NVN 108WA5 AWN 108445 AWN 108WA5 194 sa 7 Ez SE B918 l an jii Kera als ur 0 7 1103813 TINI 2090 T t 08 I d 9918 3 4 1 E JN Wd I PD as Nez
87. IONS and 12 TROUBLESHOOTING have been corrected in REVISED EDITION G Please void OC322 REVISED EDITION F Note This service manual describes technical data of the outdoor units RoHS compliant products have G mark on the spec name plate For servicing of RoHS compliant products refer to the RoHS Parts List 1 COMBINATION OF INDOOR AND OUTDOOR UNITS 1 1 INDOOR UNIT SERVICE MANUAL Outdoor unit Indoor unit Heat pump type SUZ I Service KA25VA H TH KA35VA H TH KA50VAt TH KAGOVA TH Service Ref Manual _ KA25VA H R1 TH KA3SVA HRI TH KASOVAR2 TH KAGOVAR2 TH V IH SLZ KA25VA L TH SLZ KA35VA L TH SLZ KA50VA L TH SEZ KC25VA W SEZ KA35VA TH SEZ KASOVA TH SEZ KA60VA TH SEZ KA71VA TH SEZ KD25VA L TH SEZ KD35VA L TH SEZ KD50VA L TH 0711 SEZ KD60VA L TH L A a cM 3 3 SEZ KD71VA L TH MFZ KA25VA E1 MFZ KA35VA E1 MFZ KA50VA E1 NOTE Please refer to the service manual of indoor unit or the technical data book for the combination data Only MFZ KA VA series can be connected to SUZ KA VAH series 1 2 TECHNICAL DATA BOOK OCS03 OC322G 2 2 TECHNICAL CHANGES SUZ KA25VA TH gt SUZ KA25VAR1 TH SUZ KA25VAH TH SUZ KA25VAHR1 TH
88. JOQWAS 104 siojonpuoo 1eddoo sn Burorwes WEJBEIP JOOPUI BU o 19461 YOLSINYSHL JHNLVHIAWIL Nis JAVA NOISNVdX3 A31 YOLSINYSHL JYNLYYJdN3L 398VHOSIQ HOLOV3H MOD JAVA 9NISH3A3H YOLSINYSHL LSO33G FINGOW LNSSITISLNI AV 133 390718 IVNINHIL 390718 IVNINHIL HOLSIS3H HOLSIS3H HOLSIS44 HOLIMS SYNSS3uYd HOIH SdH FINGOW H3MOd LNASITISLNI O 69H HIJNHOJSNVHL HITIOHLNOQD YOLOVA H3MOd 1491581 3504 V144 1109 GION11OS 98955 HOLSIHVA asnd HOLSINUIHL JUNIVHIAWILI soru 1V3H HOOQLNO YOLSINYJHL JHNLVHIAWIL 5914 411113 3SION YOLOW YOOGLNO HOSSJHAWNOD YANYOASNVYLL LN38809 HINHOHSNVHL INIHHNQ Z L LO YOLIOVdVO ONIHLOOWS 189
89. L PARTS AND FUNCTIONAL PARTS 27 31 30 29 TM HZ 222 KON Wa J 9 10 11 12 13 OC322G 116 SUZ KASOVA TH SUZ KA60VA TH SUZ KA71VA TH 14 3 OUTDOOR UNIT STRUCTURAL PARTS ELECTRICAL PARTS AND FUNCTIONAL PARTS Part numbers that are circled are not shown in the illustration Symbol Q ty unit Part No Part Name in Wiring SUZ KA VA TH Remarks Diagram 60 E02 819 297 TOP PANEL 1 E02 851 630 OUTDOOR HEAT EXCHANGER 1 E02 853 630 OUTDOOR HEAT EXCHANGER E02 938 301 OUTDOOR FAN MOTOR RC0J60 E02 851 501 PROPELLER FAN E02 851 290 BASE E02 853 290 BASE E02 819 232 CABINET E02 819 009 HANDLE E02 819 521 FAN GUARD E02 853 646 HIGH PRESSURE SWITCH E02 065 506 COMPRESSOR RUBBER SET 3RUBBERS SET E02 853 506 COMPRESSOR RUBBER SET 3RUBBERS SET E02 939 900 JCOMPRESSOR SNB130FLDH1 E02 853 900 COMPRESSOR TNB220FMCH E02 851 661 STOP VALVE GAS 912 7 E02 819 661 STOP VALVE GAS 15 88 E02 821 662 STOP VALVE LIQUID 6 35 E02 822 662 STOP VALVE LIQUID 99 52 E02 851 640 EXPANSION VALVE E02 853 640 EXPANSION VALVE E02 851 493 EXPANSION VALVE COIL E02 853 299 OIL SEPARATOR E02 935 490 R V COIL E02 891 961 4 WAY VALVE E02 819 650 VALVE COVER E02 819 245 SERVICE PANEL E07 170 450 OUTDOOR ELECTRONIC CONTROL P C BOARD E07 171 450 OUTDOOR ELECTRONIC CONTROL P C BOARD
90. MITSUBISHI ELECTRIC 1 Regardless of normal or abnormal a short beep is emitted once as the signal is received Do you hear the expansion valve click click 2 Do you feel the expansion valve vibrate on touching it No NOTE After check of LEV do the undermentioned I operations 1 Turn OFF the power supply and 4 Is LEV properly fixed to the Properly fix the LEV to the turn ON again 5 2 expansion valvet expansion valve 2 Press the RESET button on the remote Yes controller Measure each voltage between connector pins of CN724 on the inverter P C board s 1 Pin Pin INA genie ales 2 Pin PinD No Replace the have the characteristics i N Refer to 12 4 3 Pin Pin inverter P C board Reter to 4 Pin PinD No Is there about 3 5V AC between each NOTE Measure the voltage by an analog tester Replace the LEV Yes Replace the expansion valve OC322G 15 L Check of LEV Expansion valve For wired remote controller use model LEV body securely Turn on power supply to the outdoor unit after checking LEV coil is mounted to i Is click click sound heard Yes gt Normal Or do you feel vibration of the LEV coil with a hand No Disconnect the connector Yes 5 gt Replace the inverter P C board CN724 is there normal
91. MPa Gauge 14 1 14p 1 1 14 1 ki ki ell PAD 5 FI E E10 Ev 10 i P Fu pi Ea P D IL ter fl U ip EIER ER EN 21 045 1820 25 3032 35 C 45 1820 25 3032 35 C 025 1820 25 3032 35 035 1820 25 3032 35 50 60 70 50 60 70 50 60 70 96 50 60 70 Ambient temperature C Ambient humidity Ambient temperature C Ambient humidity Ambient temperature C Ambient humidity Ambient temperature C Ambient humidity SUZ KA71VA kgf cm Gauge MPa Gauge 14p 14 o 212 12 3 8kF 08 3 6 0 6 o 4L 0 4 2L 02 15 1820 25 30 32 35 50 60 70 95 Ambient temperature C Ambient humidity SUZ KA25VA H SUZ KA35VA H SUZ KA50VA SUZ KA60VA 4 5 12 5 35 45 g J 40 5 5 5 5 3 4 8 5 5 5 5 5 5 5 5 525 35 6 o o o o 45 1820 25 3032 35 C 45 1820 728 3032 35 C G5 1820 25 3032 35 C 5 1820 25 3032 35 C 50 60 70 50 60 70 50 60 70 50 60 70 Ambient temperature C Ambient humidity Ambient temperature C Ambient humidity Ambient temperature C Ambient humidity Ambient temperature C Ambient humidity SUZ KA71VA 12 Outdoor unit current A 4 15 1820 25 3032 35 C 50 60 70 96 Ambient temperature C Ambient humidity OC322G 37 HEAT operation Condi
92. O SELNO OUTDOOR UNIT id MANIS 5 9 298 p ass sas S LEL YW 10080 5 HIMOd ZHOS A0 c N e SNILO3NNOO LINN HOQQNI OL OC322G SUZ KA25VAR1 TH xoo q ayeolpul SJOQWAS BuuiM pjey 104 Ajuo SJOJONPUOJ asf BUIDIAJOS Jo oujoeje JOOPUI 0 1 J 1 211J09 9 epis JOOPUI euj JNOQV S3LON 9811938803 LINA HOQONI 01 1 4 aps M2 W Vl oj WIND Tal GE x lt 2 gt e lt O 5 dWil 1109 291 439NVHOX3 1V3H 000100 9010933 191 1100 3ATVA 9NISU3A3H HOLSIWAJHI dW3L 1N3IGAV JINGOW YAMOd 1N39I1131NI 601 Wl AV 139 9 9X HOLSIWHIHI dN31 39IA30 H3MOd 1N3911131NI 0821 5 u01SINU3HI 4 9 51 WST EL 3513 1063 1084 1014 HOLSISNVUL H3MOd ONTHOLIMS HOLSIWHAHL 1508430 0058061001 3SN4 194 39018 TVNINH31 TAL NOILI3LOWd 1100819 99014 79914 5 39415 ysa 40151934
93. ON SELECT button and TOO COOL button on the remote controller at the same time press RESET button First release RESET button Turn ON the power supply While pressing both OPERATION SELECT button and TOO COOL button on the remote control First release RESET button And release the other two buttons since all LCD in operation display section of the remote controller is displayed after 3 seconds er at the same time press RESET button And release the other two buttons since all LCD in operation display section of the remote controller is displayed after 3 seconds Y xi Press OPERATE STOP ON OFF button of the remote controller the set temperature is displaved OR CD 258 Does OPERATION INDICATOR lamp on the indoor No Indoor unit is normal unit imk At the Seconds OFF There is a possibility that the plasma or outdoor unit is abnormal INKS STNEE NOON OF Qudoorunis abnormal Confirm the failure detail on the LED display of the outdoor Beep sounds are emitted at the same timing of the controller board refer to 12 2 4 blinking of OPERATION INDICATOR lamp X2 Yes Judgment of indoor outdoor abnormality Blinks Before blinking does POWER Yes lamp stay ON for 3 seconds x1 Regardless of normal or abnormal a short beep is emitted once as the signal is received Stays ON for 3 seconds without beep The outdoor unit is
94. RT65 abriormal replace the Measure the inverter P C resistance board since between CN643 RT64 is and combined with the inverter P C board Check of R V coil Yes controller use model TEST button twice For wired remote controller use model OK Cause is poor contact First of all measure the resistance of R V coil to check if the coil is defective Refer to 12 4 n case CN721 is not connected or R V coil is open voltage is generated between the terminal pins of the connector although no signal is being transmitted to R V coil Check if CN721 is connected Unit operates COOL mode even if it is set to HEAT mode Disconnect connector CN61 between compressor and intelligent power module For wireless remote controller use model Turn ON the power supply and press the on the power P C board 3 minutes after Is there 230V AC between CN7210 and No gt the power board the power supply is turned ON EMERGENCY OPERATION switch HEAT switch For wired remote controller use model Turn ON the power supply and press the button twice HEAT mode B Yes Replace the 4 way valve CN721 Power P C board soldered side Unit operates HEAT mode even if it is set to COOL mode Disconnect connector CN61 between A compressor and intell
95. RY Symbol Q ty unit Part No Part Name in Wiring Diagram SUZ KA50 VA TH SUZ KA60 VA TH SUZ KA71 VA TH Remarks E02 817 704 DRAIN SOCKET 1 1 1 E02 444 705 DRAIN CAP OC322G 118 2 2 2 233 15 RoHS PARTS LIST SUZ KA25VA TH SUZ KA35VA TH SUZ KA25VAH TH SUZ KA35VAH TH 15 1 OUTDOOR UNIT ELECTRICAL PARTS Part numbers that are circled are not shown in the illustration Symbol Q tylunit Part Name in Wiring SUZ SUZ Remarks Diagram ira pk L61 1 1 POWER BOARD 1 POWER P C BOARD R V COIL 2154 THERMISTOR SET RT61 RT62 AMBIENT TEMPERATURE THERMISTOR RT65 FUSE HOLDER FUSE F61 TERMINAL BLOCK TB1 TERMINAL BLOCK TB2 3P INVERTER P C BOARD Including heat sink and RT64 INVERTER P C BOARD Including heat sink and RT64 INVERTER P C BOARD Including heat sink and RT64 INVERTER P C BOARD Including heat sink and RT64 FUSE F71 F801 250V 3 15A VARISTOR NR62 NR63 NR64 RoHS DEFROST DISCHARGE 250V 20A 3P OO N O OI OO N 0 09 09 0 0 02 09 O O 010 h gt gt gt lt gt gt gt gt gt gt gt gt gt gt 22 119 SUZ KA35VA TH SUZ KA25VAH TH SUZ KA35VAH TH SUZ KA25VA TH 15
96. Replace the inverter P C board Yes Check the compressor vv 9 See Check of compressor b Check of open phase e With the connector between the compressor and the intelligent power module disconnected activate the inverter and check if the inverter is normal by measuring the balance of voltage between the terminals The output voltage values have the tolerance of 2096 lt lt Operation method Start cooling or heating operation by pressing EMERGENCY OPERATION switch on the indoor unit TEST RUN OPERATION Refer to page 31 for SLZ SUZ and page 37 for SEZ SUZ Measurement point At 3 points BLK 9 time flash EREDI oeosososososososooooos 2 5 second OFF NOTE 1 Output voltage varies according to power supply voltage 2 Measure the voltage by analog type tester 3 During this check LED of the inverter P C board flashes 9 times Refer to 12 6 3 KA25 35VA or 12 6 7 d Check of compressor Refer to Check of compressor winding Replace the compressor Is the compressor normal No Yes Refer to D Check of compressor operation Is the compressor time No operation time more than Replace the compressor Does the compressor operate continuously 10 seconds Yes Yes Check the refrigerant circuit OC322G 88 SUZ KA25 35VA H R1 TH SUZ KAS50VAR2 TH
97. SHC 18 0 57 1646 5 94 3 39 20 0 45 1744 6 27 2 82 18 0 61 1646 5 94 3 62 20 0 49 1744 6 27 3 07 22 0 37 1813 6 60 2 44 18 0 65 1646 5 94 3 86 20 0 53 1744 6 27 3 32 22 0 41 1813 6 60 2 71 18 0 69 1646 5 94 14 10 20 0 57 1744 6 27 3 57 22 0 45 1813 6 60 2 97 24 0 33 1882 6 93 2 29 20 0 61 1744 6 27 3 82 22 0 49 1813 6 60 3 23 24 0 37 1882 6 93 2 56 18 0 77 1646 5 94 4 57 20 0 65 1744 6 27 4 08 22 0 53 1813 6 60 3 50 24 0 41 1882 6 93 2 84 26 0 29 1980 7 26 2 11 18 0 81 1646 5 94 4 81 20 0 69 1744 6 27 4 33 22 0 57 1813 6 60 3 76 24 0 45 1882 6 93 3 12 26 0 33 1980 7 26 2 40 18 0 85 1646 5 94 5 05 20 0 73 1744 6 27 4 58 22 0 61 1813 6 60 14 03 24 0 49 1882 6 93 3 40 26 0 37 1980 7 26 2 69 18 0 89 1646 5 94 5 29 20 0 77 1744 6 27 4 83 22 0 65 1813 6 60 14 29 24 0 53 1882 6 93 3 67 26 0 41 1980 7 26 2 98 18 0 93 1646 5 94 5 52 20 0 81 1744 6 27 5 08 22 0 69 1813 6 60 4 55 24 0 57 1882 6 93 3 95 26 0 45 1980 7 26 3 27 18 0 97 1646 5 94 5 76 20 0 85 1744 6 27 5 33 22 0 73 1813 6 60 4 82 24 0 61 1882 6 93 4 23 26 0 49 1980 7 26 3 56 18 1 00 1646 5 94 5 94 20 0 89 1744 6 27 5 58 22 0 77 1813 6 60 5 08 24 0 65 1882 6 93 4 50 26 0 53 1980 7 26 3 85 NO
98. TE Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W WB Wet bulb temperature OC322G 51 PERFORMANCE DATA COOLING operation at Rated frequency SEZ KA60VA SUZ KA60VA CAPACITY 5 5 kW INPUT 1960 W SHF 0 75 OUTDOOR D B C INDOOR 40 W B C SHC SHF INPUT 18 4 95 2 82 0 57 2038 20 5 28 2 38 0 45 2097 18 4 95 3 02 0 61 2038 20 5 28 2 59 0 49 2097 22 5 61 2 08 10 37 2195 18 4 95 3 22 10 65 2038 20 5 28 2 80 10 53 2097 22 5 61 2 30 10 41 2195 18 4 95 3 42 10 69 2038 20 5 28 3 01 0 57 2097 22 5 61 2 52 0 45 2195 24 5 94 1 96 0 33 2254 20 5 28 3 22 0 61 2097 22 5 61 2 75 0 49 2195 24 5 94 2 20 0 37 2254 18 4 95 3 81 0 77 2038 20 5 28 3 43 0 65 2097 22 5 61 2 97 10 53 2195 24 5 94 2 44 10 41 2254 26 6 27 1 82 0 29 2332 18 4 95 4 01 0 81 2038 20 5 28 3 64 0 69 2097 22 5 61 3 20 0 57 2195 24 5 94 2 67 0 45 2254 26 6 27 2 07 0 33 2332 18 4 95 4 21 0 85 2038 20 5 28 3 85 0 73 2097 22 5 61 3 42 0 61 2195 24 5 94 2 91 0 49 2254 26 6 27 2 32 0 37 2332 18 4 95 4 41 0 89 2038 20 5 28 4 07 0 77 2097 22 5 61 3 65 10 65 2195 24 5 94 3 15 10 53 2254 26 6 27 2
99. TH SUZ KA50OVA TH SUZ KA60VA 1 TH SUZ KA71VA TH 15 5 OUTDOOR UNIT STRUCTURAL PARTS ELECTRICAL PARTS AND FUNCTIONAL PARTS 31 30 29 ae EN A 5 MMM A MAESNSNFEFFEFE Z 78 Z 5 C e 9 10 11 12 13 OC322G 126 Part numbers that circled are not shown in the illustration o Part Name Symbol in Wiring Diagram Q ty unit SUZ KA VA TH SUZ KA VA TH SUZ KA VAR2TH 50 60 71 50 60 71 60 Remarks TOP PANEL 1 1 1 1 1 1 1 OUTDOOR HEAT EXCHANGER 1 1 1 1 1 OUTDOOR HEAT EXCHANGER OUTDOOR FAN MOTOR RCOJ60 PROPELLER FAN BASE BASE CABINET HANDLE FAN GUARD O N 2 HIGH PRESSURE SWITCH e COMPRESSOR RUBBER SET 3RUBBERS SET COMPRESSOR RUBBER SET 3RUBBERS SET COMPRESSOR RUBBER SET 3RUBBERS SET COMPRESSOR SNB130FLDH1 COMPRESSOR TNB220FMCHT COMPRESSOR SNB130FGBH STOP VALVE GAS 212 7 STOP VALVE GAS 15 88 STOP VALVE LIQUID 6 35 STOP VALVE LIQUID 99 52 EXPANSION VALVE EXPANSION VALVE EXPANSION VALVE COIL OIL S
100. UZ KA71VA1 TH Test conditions Cooling Dry bulb temperature 35C Wet bulb temperature 24 C Heating Dry bulb temperature 7C Wet bulb temperature 6 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR FAN SPEED FUNCTION SPL dB A LINE COOLING 53 ee High HEATING 55 0 o 90 7 80 E t 70 i i F ING 70 F 1 i 1 i 60 1 i i NC 60 F 1 i Ic 50 1 1 JNC 50 i 40 an i E 1 TNC 40 5 30 i 1 F J JNC 30 20 APPROXIMATE i THRESHOLD OF EAN 1 HEARINGFOR i JNC 20 CONTINUOUS i Ted i 40 NOISE i i 1 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz OC322G OUTDOORUNIT 1m MICROPHONE 12 OUTLINES AND DIMENSIONS 6 Unit mm SUZ KA25VA TH SUZ KA25VAH TH SUZ KA25VAR1 TH SUZ KA25VAHR1 TH SUZ KA35VA TH SUZ KA35VAH TH SUZ KA35VAR1 TH SUZ KA35VAHR1 TH OUTDOOR UNIT REQUIRED SPACE Basically open 100mm or more without any obstruction in front and on both sides of the unit Drain hole 42 SUZ KA25 KA35VA 40 youd yog H wi E 5 5 EX 0 95 eg TS 5 2 5
101. Unit operates HEAT mode even if it is set to COOL mode Disconnect connector CN61 between the compressor and the intelligent power module Turn ON the power supply and press EMERGENCY OPERATION switch once COOL mode Check of outdoor fan motor Check the connection between the connector CN931 and CN932 Is the resistance between each ter Is there 230 VAC between CN7210 and on the inverter P C board 3 minutes No yas a inverter after the power supply is turned ON Hu Yes Replace the 4 way valve Is there 230 VAC between 7210 and on the inverter P C board 3 minutes after the power supply is turned ON Replace the inverter Yes P C board No Replace the 4 way valve minal of outdoor fan motor normal Refer to 12 4 No Yes lt Fixed to either 5 VDC Y Disconnect CN932 from outdoor electronic control P C board or the inverter P C board and turn on the power supply Y Rotate the outdoor fan motor manually and measure the voltage of CN931 Between 1 and 5 Between 2 and 5 Between 3 and 5 Y Does the voltage between each terminal become 5 and 0 No VDC repeatedly Yes Y Y Replace the outdoor fan motor OC322G No Does the outdoor fan motor rotate smoothly Yes Replace the outdoor electronic control P C board or the inverter P C bo
102. VNINHIL MOD OWO 91 291 YOLIOVdVO DNIHLOOWS 9690 869 VC9 YOLSISAY ar94 VPOH YOLOWVAY L91 HINHOJSNVUL 1 181191911919 10 2 jun JOOPUI eui 0 19491 9119919 epis JOOPUI eu S310N 3INVN lO8WAS 3INVN 5 3IWVN TOEWAS SUZ KA25VAH TH MODELS WIRING DIAGRAM SUZ KA35VAH TH OUTDOOR UNIT 1a qavog 1083 994 aay nis ALIHM DIV l l M rco 51 CI ua f9NO 109NO 99X Od HALHJAN SZJNO UND i gir Od Mddns adi MIANSO O ol ZHOS A0 Z ovsa me 8L Toe 9890 8290 vego z NL 8 SS 91 291 IHM Tam Ors 708 5 a yng 8991 199V i 194 Tal 191 Poe ge RE nes
103. WB Wet bulb temperature OC322G 46 PERFORMANCE DATA COOLING operation at Rated frequency SEZ KA35VA SUZ KA35VA H CAPACITY 3 5 kW INPUT 1060 W SHF 0 77 OUTDOOR D B C INDOOR 25 27 W B C SHF SHC 18 059 890 2 23 20 0 47 943 1 88 18 063 890 2 38 20 051 943 2 03 22 0 39 981 1 64 18 067 890 2 53 20 0 55 943 2 19 22 043 981 1 81 18 071 890 2 68 20 059 943 2 35 22 047 981 1 97 24 0 35 1018 1 54 20 063 943 2 51 22 0 51 981 2 14 24 0 39 1018 1 72 18 0 79 890 2 99 20 067 943 2 67 22 0 55 981 2 31 24 043 1018 1 90 26 031 1071 1 43 18 083 890 3 14 20 071 943 2 83 22 0 59 981 2 48 24 0 47 1018 2 07 26 0 35 1071 1 62 18 087 890 3 29 20 0 75 943 2 99 22 0 63 981 2 65 24 0 51 1018 2 25 26 0 39 1071 1 80 18 0 91 890 3 44 20 0 79 943 3 15 22 0 67 981 2 81 24 0 55 1018 2 43 26 043 1071 1 99 18 0 95 890 3 59 20 083 943 3 31 22 0 71 981 2 98 24 0 59 1018 2 60 26 0 47 1071 2 17 18 099 890 3 74 20 0 87 943 3 47 22 0 75 981 3 15 24 0 63 1018 2 78 26 051 1071 2 36 18 1 00 890 3 78 20 091 943 3 63 22 0 79 981 3 32 24 0 67 1018 2 95 26 0 55 1071 2 54 NOTE Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity kW INPUT Total power input W WB Wet bulb temperature
104. Z KA50 60 71VA TH SUZ KA60VAR2 TH Electromagnetic noise enters into TV sets or radios No Is the unit earthed gt Earth the unit Yes Is the distance between the antennas and the indoor Extend the distance between unit within 3m or is the Yes the antennas and the indoor distance between the unit and or the antennas and antennas and the outdoor the outdoor unit unit within 3m Is the distance between the TV sets or radios and the indoor unit within 1m or is Yes Extend the distance between the TV sets and or radios and sets or radios and the outdoor unit within 3m or radios and the outdoor unit Are the antennas damaged Is the coaxial cable damaged Is there any poor contact in the antenna wiring Yes Replace or repair the antenna Replace or repair the coaxial cable the distance between the mj the indoor unit or the TV sets Is the indoor outdoor Yes Extend the distance between connecting wire of the air the indoor outdoor connecting conditioner and the wiring of wire of the air conditioner and the antennas close the wiring of the antennas Even if all of the above conditions are fulfilled the electromagnetic noise may enter depending on the electric field strength or the installation condition combination of specific conditions such as antennas or wiring Check the followings before asking for service
105. ace the LEV coil n Check of inverter P C board Check the outdoor fan motor Refer to 2 Y Is the fuse F901 blown on the in SUZ KA25 35VA H R1 TH SUZ KA50VAR2 TH For wired remote controller use model Normal Replace the inverter P C board cs P C board Yes No Y Check the connection of the connectors CN931 CN932 of the outdoor fan mo tor If the connection is poor make it correct Operate the outdoor unit by starting EMERGENCY OPERATION Check the LED indication on the in verter P C board Does the LED flash 10 times Yes 10 time flash Replace the inverter P C board lt Check the corresponding parts following LED indication Refer to 12 3 OC322G 92 How to check miswiring and serial signal error Turn OFF the power supply D Y Is there rated voltage in the power supply Yes Y Turn ON the power supply Y SUZ KA25 35VA H R1 TH SUZ KA50VAR2 TH For wireless remote controller use model Check the power supply Is there rated voltage between outdoor termi Check the wiring nal block S1 and S2 No Yes Y Press EMERGENCY OPERATION switch once Y Does the left lamp of OPERATION INDICA TOR lamp light up Confirmation
106. aches the protection current and compressor frequency lowers The unit is normal but check the following 3 time flash 2 5 seconds OFF Frequency drop by high pressure protec tion Temperature of indoor coil thermistor exceeds 55 in HEAT mode compressor frequency lowers Frequency drop by defrosting in COOL mode Indoor coil thermistor reads 8 C or less in COOL mode com pressor frequency lowers Check if indoor filters are clogged Check if refrigerant is short Check if indoor outdoor unit air cir culation is short cycled 4 time flash 2 5 seconds OFF Frequency drop by discharge tempera ture protection Temperature of discharge temperature thermistor exceeds 111 C compressor frequency lowers Check refrigerant circuit and refrig erant amount Refer to 12 5 9 Check of LEV Refer to 12 5 amp Check of outdoor thermistors Outdoor unit operates 7 time flash 2 5 seconds OFF Low discharge tem perature protection Temperature of discharge temperature thermistor has been 50 C or less for 20 minutes Refer to 12 5 Check of LEV Check refrigerant circuit and refrig erant amount 8 time flash 2 5 seconds OFF PAM protection PAM Pulse Amplitude Modulation The overcurrent flows into IGBT Insulated Gate Bipolar tran sistor TR821 or when the bus bar voltage reaches 320 V or more PAM stops and restarts This is not malfunction PAM protec
107. ard 90 SUZ KA25 35VA H R1 TH SUZ KA50VAR2 TH 280 370 VDC D Check of power supply Disconnect the connector CN61 between compressor and intelligent power module Turn ON power supply and press Rectify indoor outdoor EMERGENCY OPERATION switch connecting wire Inverter P C board Solder side Does the left lamp of OPERATION Is there voltage 230 VAC Replace the indoor INDICATOR lamp on the indoor unit between the indoor terminal electronic control light up block S1 and 52 board Is there voltage 280 370 VDC between DB61 and DB61 on Dose LED on the inverter a Replace the inverter gt board light up or flash ee 1263 or 12 67 C Refer to 1263 or 12 67 board No Yes Check the electric parts in main circuit Iflight up OK paris in main circul If flash refer to 12 3 Check of LEV For wireless remote controller use model um ON the power supply Preparation of the remote controller While pressing both OPERATION SELECT button and TOO COOL button on the remote controller at the same time press RESET button First release RESET button And release the other two buttons after all LCD except the set temperature in operation display section of the remote controller is displayed after 3 seconds Press OPERATE STOP ON OFF butto
108. at sink i U8 8 Outdoor unit fan protection stop m U6 9 Compressor overcurrent interruption Abnormal of power module U7 10 Abnormality of super heat due to low discharge temperature U9 UH Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit Current sensor error 12 13 Others 14 Other errors If the beeper does not sound again after the initial two beeps to confirm the self check start signal was received and the OPERATION INDICATOR lamp does not come on there are no error records If the beeper sounds three times continuously beep beep beep 0 4 0 4 0 4 sec after the initial two beeps to confirm the self check start signal was received the specified refrigerant address is incorrect On wireless remote controller The continuous buzzer sounds from receiving section of indoor unit Blink of operation lamp On wired remote controller Check code displayed in the LCD OC322G 60 12 2 4 Outdoor unit failure mode table SUZ KA25VA H SUZ KA35VA H Except for SUZ KA25 35VA H R1 TH Gutdoor arnt ratiare mode Details of abnormal Detection method Check point 1 time flash every Outdoor thermistors Discharge temperature When thermistors short or open during Check the outdoor thermistors 2 5 seconds Defrost thermistor compressor running 2 time flash Ambient temperature thermistor D
109. by counting time until the inverter stops 0 to 10 seconds compressor rare short 10 to 60 seconds compressor lock 60 seconds to 5minutes refrigerant circuit defective 5 minutes or more normal OC322G 85 When thermistor is abnormal 592 5 60 71 SUZ KA60VAR2 TH V Check of outdoor thermistors Disconnect the connector in the outdoor electronic control P C board or the outdoor power board Yes the thermistor see below table and measure the resistance of thermistor Is the thermistor normal No Reconnect the connector CN661 on the outdoor electronic control P C board and CN3 on the power board and disconnect the lead wire leading to the compressor 3 minutes after turning on the power supply start EMERGENCY OPERATION Does thermistor operate 10 minutes or more though the No Replace the outdoor electronic thermistor abnormality is not displayed control P C board res Thermistor Connector Pin No Defrost thermistor Between CN661 pin1 and pin2 on the outdoor electronic control P C board Discharge temperature thermistor Between CN661 pin3 and pin4 on the outdoor electronic control P C board Outdoor heat exchanger temperature thermistor Between CN661 pin7 and pin8 on the outdoor electronic control P C board Fin temperature thermistor Between CN3 pin1 and pin2 on the outdoor power board Ambient temperature thermistor
110. ck of inverter P C board 12 time flash 2 5 seconds OFF Each phase current of compressor When compressor each phase current cannot be detected normally Refer to 12 5 How to check inverter compressor 13 time flash 2 5 seconds OFF DC voltage When DC voltage of inverter cannot be detected normally Refer to 12 5 How to check inverter compressor Outdoor unit operates 1 time flash 2 5 seconds OFF Frequency drop by current protection When current from power outlet exceeds 6 1A SUZ KA25VA H 9 2A SUZ KA35VA H compressor frequency lowers 3 time flash 2 5 seconds OFF Frequency drop by high pressure protection When indoor coil thermistor exceeds 55 C in HEAT mode compressor frequency lowers Frequency drop by defrosting in COOL mode When indoor coil thermistor reads 8 C or less in COOL mode compressor frequency lowers The unit is normal but check the following Check if indoor filters are clogged Check if refrigerant is short Check if indoor outdoor unit air circulation is short cycled 4 time flash 2 5 seconds OFF Frequency drop by discharge temperature protection When discharge temperature thermistor exceeds 111 C compressor frequency lowers Check refrigerant circuit and refrigerant amount Refer to 12 5 Check of LEV Refer to 12 5 Check of outdoor thermistors Outdoor unit operates 7 time flash 2
111. e operation time more than Replace the compressor compressor operate 10 seconds continuously Yes Yes Check the refrigerant circuit E Check of compressor winding WHT RED BLK Disconnect the connector CN61 between compressor and intelligent power module and measure the resistance between the compressor Ohmmeter indication terminals Measurement point at 3 points of lead wire 47 BLK WHT BLK RED G Q WAERED A 2 Compressor motor lt lt Judgment gt gt Refer to 12 4 O Q 6 Abnormal short s Abnormal Infinite Q Abnormal open 00 short NOTE 1 Be sure to zero the ohmmeter before measurement 2 Winding resistance for each phase at 20 C 9 Refer to 4 SPECIFICATION S7 Abnormal 2 infinite open Check of compressor operation time 0 second Outdoor fan starts Abnormal Compressor winding short or layer short compressor connector poor contact compressor lock out Connect the compressor and activate the inverter Then measure the time until the inverter stops due to over current lt lt Operation method gt gt For wireless remote controller use model Start heating or cooling operation by pressing the EMERGENCY OPERATION switch on the indoor unit Test run mode For wired remote controller use model Start heatin
112. e C Ambient humidity HEAT operation Condition indoor Dry bulb temperature 20 0 C Wet bulb temperature 14 5 C Condition outdoor Dry bulb temperature 2 7 15 20 0 C Wet bulb temperature 1 6 12 14 5 C SUZ KA25VA H SUZ KA35VA H SUZ KA50VA 3 0 4 0 7 0 2 5 3 5 6 0 5 20 5 30 5 50 3 2 15 2 5 4 0 s 10 s 2 0 5 3 0 o o o 2 E 0 5 E 1 5 2 0 0 0 1 0 1 0 2 5 10 15 20 25 C 2 5 10 15 20 25 C 2 5 10 15 20 25 C Ambient temperature C Ambient temperature C Ambient temperature C OC322G 32 Model e SEZ KC25VA SUZ KA25VA e SEZ KA35VA SUZ KA35VA e SEZ KA50VA SUZ KA50VA e SEZ KA60VA SUZ KA60VA e SEZ KA71VA SUZ KA71VA The standard data contained in these specifications applies only to the operation of the air conditioner under normal condition Operating conditions vary according to the areas where these units are installed The following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve 1 GUARANTEED VOLTAGE Rated voltage 10 207 253V 50Hz 2 AIR FLOW Air flow should be set at MAX 3 MAIN READINGS COOLING HEATING 1 Indoor intake air wet bulb temperature W B C 1 Indoor intake air dry bulb temperature D B C 2 Indoor outlet air wet bulb temperature W B C 2 Indoor outlet air dry bulb temperature D B C 3 Outdoor intake air dry bulb temperature
113. e measurement hold the thermistor with your hands to warm it up thermistor RT62 Refer to 12 6 Test point diagram and voltage 12 6 1 or 12 6 3 Inverter P C board for the chart of thermistor Measure the resistance between the terminals with a tester Part temperature 20 C 40 WHT RED BLK Normal Compressor SUZ KA25VA H TH SUZ KA35VA H TH SUZ KA25VA H R1 TH SUZ KA35VA H R1 TH U V ed 1280 1 660 0 41 0 0 530 1 360 1 930 1 520 2 17 Q Outdoor fan motor Measure the resistance between the terminals with a tester Part temperature 20 C 40 C Normal Color of the lead wire SUZ KA25 35VA H TH SUZ KA25 35VA H R1 TH WHT BLK BLK RED 310 410 290 420 RED WHT R V coil Measure the resistance between the terminals with a tester Part temperature 20 C 40 C Normal SUZ KA25 35VA H TH 1 20 1 55 SUZ KA25 35VA H R1 TH 1 19 1 78 Expansion valve coil LEV Measure the resistance with a tester Part temperature 20 C 40 C Color of the lead wire Normal WHT RED RED ORN YLW 370 540 BRN BLU WHT RED ORN X9 YLWIS BRNI BLUIS Defrost heater SUZ KA VAH OC322G Measure the resistance with a tester Part temperature 20 C 40 Normal 333 Q 428 Q
114. e picture is SEZ KA35 50 60 71VA SEZ KC25VA is similar to SEZ KA35 50 60 71VA OC322G 33 Indoor air Wet bulb temperature Indoor air Wet bulb temperature Indoor air Wet bulb temperature difference degree difference degree difference degree 8 4 7 8 7 2 6 6 6 0 54 SUZ KA25VA H at Rated frequency Cooling capacity 14 5 Indoor intake air Wet bulb 1 3 temperature C 5 512 26 g 9 1 1 24 s 1 0 22 20 18 10 5 0 5 10 15 20 25 30 35 40 4546 Outdoor intake air Dry bulb temperature 1 4 Cooling capacity N Indoor intake air Wet bulb SUZ KA35VA H at Rated frequency 8 4 6 0 5 4 SUZ KASOVA at Rated frequencv l D L3 2 2 U S c 8g 5 E gt U G U 0 5 0 5 10 15 20 25 30 35 Outdoor intake air Dry bulb temperature 8 6 10 5 8 0 9 6 7 4 8 8 6 8 7 9 6 2 7 1 5 5 6 3 os So 5 NE NE a ae OC322G Cooling capacity Input correction factors Input correction factors Total input cooling
115. ean any abnormality of the product but check the following points Check if indoor filters are clogged Check if refrigerant is short Check if indoor outdoor unit air circulation is short cycled Outdoor unit operates 9 times Lighting Inverter check mode When the unit is operated with emergency operation switch Lighting OC322G Lighting 67 SUZ KA25VA H R1 TH SUZ KA35VA H R1 TH SUZ KA50VAR2 TH Symptom LED indication Abnormal point Con dition Condition Correspondence Outdoor unit ate does not oper 1 time flash every 2 5 seconds Outdoor power sys tem Overcurrent protection stop is continuously performed 3 times within 1 minute after the compressor gets started or failure of restart of compressor has repeated 24 times Reconnect connector of compres sor Refer to 12 5 How to check in verter compressor Check stop valve Outdoor thermistors Discharge temperature thermistor fin temperature thermistor defrost thermistor P C board temperature thermistor or ambi ent temperature thermistor shorts or opens during compressor running Refer to 12 5 amp Check of outdoor thermistors Outdoor control sys tem Nonvolatile memory data cannot be read properly The left lamp of OPERATION INDICATOR lamp of the indoor unit lights up or flashes 7 time Replace inverter P C board 6 time flash 2 5
116. ection When discharge temperature thermistor exceeds 116 C compressor stops Compressor can restart if discharge temperature thermistor reads 100 C or less 3 minutes later Check refrigerant circuit and refrigerant amount Refer to 12 5 Check of LEV 4 time flash 2 5 seconds OFF Fin temperature P C board temperature thermistor overheat protection When temperature of fin temperature thermistor on the heat sink exceeds 83 C SUZ KA25VA H 82 C SUZ KA35VA H or temperature of P C board temperature thermistor exceeds 85 C SUZ KA25VA H 81 C SUZ KA35VA H compressor stops and restarts 3 minutes later Check around outdoor unit Check outdoor unit air passage Refer to 12 5 0 Check of outdoor fan motor 5 time flash 2 5 seconds OFF High pressure protection When indoor coil thermistor exceeds 70 C in HEAT mode When the defrost thermistor exceeds 70 C in COOL mode Check refrigerant circuit and refrigerant amount Check stop valve 8 time flash 2 5 seconds OFF Compressor synchronous abnormality When the waveform of compressor current is distorted Reconnect connector of compressor Refer to 12 5 0 How to check inverter compressor 10 time flash 2 5 seconds OFF Outdoor fan When outdoor fan has stopped within 30 seconds 3 times a row after outdoor fan start up unit stops Refer to 12 5 D Check of outdoor fan motor Refer to 12 5 Che
117. efective outdoor thermistors can 2 5 seconds OFF be identified by checking the blinking pattern of LED 3 time flash Fin temperature thermistor 2 5 seconds OFF 4 time flash P C board temperature thermistor 2 5 seconds OFF 5 time flash Outdoor control Nonvolatile memory data When nonvolatile memory data Replace the inverter P C board 2 5 seconds OFF system cannot be read properly unit stops 7 time flash Fin temperature P C Fin When fin temperature exceeds 83 C Check around outdoor unit 2 5 seconds OFF board temperature temperature P C board SUZ KA25VA H 82 C SUZ KA35VA H Check outdoor unit air passage overheat temperature overheat or P C board temperature exceeds 85C Check the outdoor fan motor protection SUZ KA25VA H 81 C SUZ KA35VA H 8 time flash Converter control JDC voltage When DC voltage of inverter cannot Check the inverter compressor 2 5 seconds OFF system be detected normally 9 time flash Compressor each phase When compressor each phase current 2 5 seconds OFF current cannot be detected normally 10 time flash Overcurrent protection Compressor open phase When 14A SUZ KA25VA H 24A Reconnect compressor connector 2 5 seconds OFF protection SUZ KA35VA H current flow into Check the inverter compressor intelligent power module IPM When the open phase protection of compressor is detected When the interphase short out occurs in the output of the intelligent power module IPM When
118. en it consecutively occurs 3times that the compressor stops for overcurrent protection or start up failure protection within 1minute start up Check stop valve Reconnect connector of compressor Refer to 12 5 How to check inverter compressor Outdoor thermistors When discharge temperature thermistor fin temperature thermistor defrost thermistor P C board temperature thermistor or ambient temperature thermistor shorts or opens during compressor running When discharge temperature Refer to 12 5 Check of outdoor thermistors Outdoor control system When nonvolatile memory data cannot be read properly compressor stops Replace inverter P C board 6 time flash 2 5 seconds OFF Serial signal When the communication failure between the indoor and outdoor unit for 3 minutes Refer to 12 5 How to check mis wiring and serial signal error 14 time flash 2 5 seconds OFF Outdoor unit Other abnormality When outdoor unit is defective Refer to 12 2 3 Check output pattern B Outdoor unit stops and restarts 3 minutes later is repeated 2 time flash 2 5 seconds OFF Overcurrent protection When 14A SUZ KA25VA H 24A SUZ KA35VA H current flows into intelligent power module Check stop valve Reconnect connector of compressor Refer to 12 5 How to check inverter compressor 3 time flash 2 5 seconds OFF Discharge temperature overheat prot
119. er protection When a failure is detected in the operation of the converter during operation OC322G Bus bar voltage protection 1 When the bus bar voltage exceeds 400V or falls to 200V or below during compressor operating Bus bar voltage protection 2 XEven if this protection stop is performed continuousiv 3 times it does not mean the abnormalitv in outdoor power svstem When the bus bar voltage exceeds 400V or falls to 50V or below during compressor operating 62 Replace the power board D indication LED2 Abnormal point Failure mode Details of abnormal Detecting method Check point Goes out Overcurrent protection IPM protection When overcurrent is detected after 30 seconds of compressor start up Lock protection When overcurrent is detected within 30 seconds after the compressor gets started Check the connection of the compressor connecting wire Check the inverter compressor Check the stop valve Goes out Goes out Fin temperature P C board temperature overheat Fin temperature overheat protection When the fin temperature exceeds 87 C during operation P C boad temperature overheat protection When the P C board temperature exceeds 70 C during operation Check around outdoor unit Check outdoor unit air passage Check the outdoor fan motor Lighting OC322G Refrigerant system Di
120. essure has been changed to MPa on the international system of units SI unit system The conversion factor is 1 MPa Gauge 10 2 kgf cm Gaugel OC322G 31 OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Both indoor and outdoor units are under the same temperature humidity condition Air flow High speed 20 50 Operation TEST RUN OPERATION Dry bulb temperature Relative humidity 25 60 30 70 SUZ KA25VA H SUZ KA35VA H SUZ KA50VA kgf cm Gauge MPa Gauge kgf em Gauge MPa Gauge Gauge MPa Gauge 14 14p 14 1 4 ii 80 212 1 2 212 212 1 2 21 510 1 0 510 s10p 1 0 3 zs 2 28 2 gl Sape d 6 06 5 6 er 06 4 0 4 4 4 0 4 2L 0 2 2L 02 15 1820 25 30 32 35 C 15 1820 25 30 32 35 C 15 1820 25 30 32 35 C 50 60 70 50 60 70 50 60 70 Ambient temperature C Ambient humidity Ambient temperature C Ambient humidity Ambient temperature C Ambient humidity SUZ KA25VA H SUZ KA35VA H SUZ KA50VA 4 5 n T T 35 E45 i 8 o o 3 4 t gt gt i o o 8 E 25 3 5 gt o o 2 3 15 1820 25 3032 35 C 15 1820 25 3032 35 C 15 1820 25 3032 35 C 50 60 70 50 60 70 50 60 70 Ambient temperature C Ambient humidity Ambient temperature C Ambient humidity Ambient temperatur
121. et air dry bulb temperature D B C 3 Outdoor intake air dry bulb temperature D B C 3 Outdoor intake air wet bulb temperature W B C 4 Total input W 4 Total input W Indoor air wet dry bulb temperature difference on the side of the chart on page shows the difference between the indoor intake air wet dry bulb temperature and the indoor outlet air wet dry bulb temperature for your reference at service How to measure the indoor air wet bulb dry bulb temperature difference 1 Attach at least 2 sets of wet and dry bulb thermometers to the indoor air inlet as shown in the figure and at least 2 sets of wet and dry bulb thermometers to the indoor air outlet The thermometers must be attached to the position where air speed is high Attach at least 2 sets of wet and dry bulb thermometers to the outdoor air inlet Cover the thermometers to prevent direct rays of the sun Check that the air filter is cleaned Open windows and doors of the room Press the EMERGENCY OPERATION switch once to start the EMERGENCY COOL HEAT MODE When system stabilizes after more than 15 minutes measure temperature and take an average temperature 10 minutes later measure temperature again and check that the temperature does not change N INDOOR UNIT OUTDOOR UNIT TEL 4 Royo Wet and dry
122. ference of SUZ KA50 60 71VA TH 15m SUZ KA50 60 71VA1 TH 30m SUZ KA50 60VAR2 TH 30m ADDITIONAL REFRIGERANT CHARGE RA10A g Refrigerant piping length one way Outdoor unit precharged 10m 15m 20m Model SUZ KASOVA TH SUZ KA50VA1 TH 1 600 SUZ KAS0VAR2 TH SUZ KA60VA TH SUZ KA60VA TH SUZ KA60VAR2 TH Calculation Xg 20g m x Refrigerant piping length m 7 Outdoor unit Refrigerant piping length one way Model precharged 10m 15m 20m 25m SUZ KA71VA TH SUZ KA71VA1 TH 2 000 165 440 715 990 Calculation Xg 55g m x Refrigerant piping length m 7 OC322G 28 9 PERFORMANCE CURVES Model e SLZ KA25VA L SUZ KA25VA e SLZ KA35VA L SUZ KA35VA SLZ KA50VA L SUZ KA50VA The standard data contained in these specifications applies only to the operation of the air conditioner under normal condition Operating conditions vary according to the areas where these units are installed The following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve 1 GUARANTEED VOLTAGE Rated voltage 10 207 253V 50Hz 2 AIR FLOW Air flow should be set at MAX 3 MAIN READINGS COOLING HEATING 1 Indoor intake air wet bulb temperature W B C 1 Indoor intake air dry bulb temperature D B C 2 Indoor outlet air wet bulb temperature W B C 2 Indoor outl
123. firmation of power voltage intermediate connection poor connecting wire contact the terminal block inverter contro No Is serial signal lled lighting error indicated equipment Yes N 6 minutes later Attach a filter o on receiving B indoor unit Be sure to release the failure mode recall function after checking OC322G 83 SUZ KA50 60 71VA TH SUZ KA60VAR2 TH The cooling operation or heating operation does not operate LED display Both LED1 and LED2 lighting S Check of R V coil When heating operation does not work 1 Disconnect the lead wire leading to the compressor 2 3 minutes after turning on the power supply start EMERGENCY OPERATION in HEAT mode Is there voltage of 230V AC between 1 and pin 2 at connector CN912 Turn off power supply of indoor and outdoor unit 1 Turn off power supply of indoor and outdoor unit and disconnect the connector CN781 in the outdoor electronic control P C board 2 3 minutes after turning on the power supply start EMERGENCY OPERATION in HEAT mode Is there voltage 12V DC between the connector CN781 pin 5 and pin 3 Disconnect the connector CN912 in noise filter P No board Is there normal resistance to R V coil No Replace the electronic control P C board Replace the R V coil Replace the
124. g or cooling operation by pressing the TEST button 10 seconds twice on the remote controller Test run mode lt lt Measurement gt gt Abnormal Measure the time from the start of outdoor fan running to the stop of Refrigerant circuit defect etc compressor due to over current lt lt Judgment gt gt For reference 5 min Normal 0 10 seconds Abnormal compressor short or poor contact compressor lock out 10 seconds 5 minutes Abnormal refrigerant circuit defect more than 5 minutes Normal OC322G 72 The thermistors the outdoor unit abnormal Check of outdoor thermistors SUZ KA25 35VA H TH Defrost thermistor RT61 Measure the Disconnect the connectors CN641 CN642 and CN643 from the inverter P C board Check the characteristics of each thermistor resistance between CN641 and Discharge temperature thermistor RT62 Reconnect the connectors Measure the CN641 CN642 resistance and CN643 Replace the inverter between CN641 Turn ON the P C board and power supply and press No Is the resistance of EMERGENCY Fin temperature thermistor normal gt S OPERATION gt 105 unit operate thermistor RT64 Refer to 12 6 1 switch For IMRS more Measure the resistance between CN642 wireless remote No Replace the and thermistor except RT64 In case that thermistor
125. h a tester Part temperature 10 C 40 C Normal SUZ KA50 60VAR2 TH Other models 1 32 KQ 1 62 kQ 2 6 KQ 3 3 kQ Expansion valve coil LEV Measure the resistance with a tester Part temperature 10 C 40 C Color of the lead wire Normal WHT RED RED ORN YLW BRN BRN BLU 37 4 Q 53 9 Q YLW BRN BLU High pressure switch HPS SUZ KA60VAR2 TH SUZ KA71VA 1 TH OC322G Pressure 3 7 0 15 MPa 4 8 1905 MPa 70 SUZ KA25 35VA H TH 12 5 Troubleshooting flow Outdoor unit does not operate How to check inverterlcompressor Disconnect the connector CN61 between compressor and the intelligent power module IPM Y Check the voltage ii between terminals See Check of open phase Y No Are the voltages Check the resistance of the intelligent balanced mc power module PEUT See Check of intelligent power module Yes Yes Is the resistance Replace the inverter P C Eo cU ese Ses Ol Checie of compressor mmy ee compressor No O several Replace the inverter P C board and compressor Check of open phase With the connector between compressor and the intelligent power module disconnected activate the inverter and check if the inverter is normal by measuring the
126. he connector CN795 Is there normal resistance to LEV coil No Replace the LEV coil Replace the outdoor electronic control P C board When heating room does not get warm When cooling room does not get cool U How to check inverter compressor LED display LED1 LED2 Lighting Lighting Lighting Twice Twice Goes out Disconnect the terminal of the compressor 3 minutes after turning on the power supply start EMERGENCY OPERATION x After the outdoor fan starts running wait for 1 minutes or more before Measure the voltage between each measuring the voltage lead wire leading to the compressor The output voltage values have the tolerance of 20 U BLK V WHT No V WHT W RED W RED U BLK coo HEAT Is voltage output on right table 150V 170V Yes 48Hz 64Hz lt Is output balanced gt N Yes COOL control P C board 370V or more Replace tie power board ves Turn off power supply of indoor and outdoor unit and measure the compressor winding resistance between the compressor terminals Is the resistance between each terminal normal Tes Reconnect the lead wire of compressor and turn on power supply to indoor and outdoor unit 3 minutes later starts EMERGENCY OPERATION input voltage to the outdoor electronic N Replace the compressor Clarify the causes
127. he damage of the wire outdoor connecting Is there amplitude of 10 to 20 VDC No intermediate connection poor wire between outdoor terminal block 52 and contact to the terminal block N TERZA S3 Confirmation of serial signal No Turn OFF inverter controlled lighting Yes equipment Turn OFF the power supply and then turn ON again Press EMERGENCY OPERATION Y Is there any error of the in switch Is there rated voltage between door outdoor connecting wire Replace the indoor indoor terminal block S1 and S2 such as the damage of the wire outdoor connecting Reinstall lt Confirmation of power voltage gt No intermediate connection poor wire either the unit or the light away from Yes contact to the terminal block No each other Attach a filter on remote control receiv ing section Is serial signal error indicated 6 minutes later of the indoor unit OC322G 93 Replace the indoor electronic control P C board Be sure to release the failure mode recall function after checking SUZ KA25 35VA H R1 TH SUZ KA50VAR2 TH How to check miswiring a nd serial signal error For wired remote controller use model Turn OFF the power supply Y Is there rated voltage in the power supply No Check the power supply Yes Y Turn ON the power s
128. he electronic control P C board from the inverter assembly 9 Remove the screws fixing the power board assembly 10 Disconnect all connectors and lead wires on the power board 11 Remove the power board from the inverter assembly 12 Disconnect all connectors and lead wires on the noise filter P C board 13 Remove the noise filter P C board from the inverter assembly SUZ KA50VAR2 TH 1 Remove the cabinet and panels Refer to 1 2 Disconnect the lead wire to the reactor and the following connectors lt Inverter P C board gt CN721 R V coil CN932 Fan motor CN641 Defrost thermistor and discharge temperature ther mistor CN643 Ambient temperature thermistor CN644 Outdoor heat exchanger temperature thermistor CN724 LEV 3 Remove the compressor connector CN61 4 Remove the screws fixing the relay panel Photo 5 5 Remove the inverter assembly Photo 6 6 Remove the screw of the earth wire and screw of the T B support Photo 6 7 Remove the screw of the PB fixture 8 Remove the relay panel from the PB support 9 Remove the inverter P C board from the inverter assembly Removing R V coil 1 Remove the top panel cabinet and service panel Refer to 1 2 Remove the back panel Refer to 1 3 Disconnect the following connectors Except for SUZ KASOVAR2Z TH lt Noise filter P C board gt CN912 R V coil SUZ KASOVAR2Z TH lt inverter board gt CN721
129. heck of power supply v Check the connecting of parts of main power supply circuit on power supply Is there voltage of 230V AC in the No power supply terminal block Check power supply cable Tes Is the output voltage from the noise filter P C board 230V AC Replace the noise filter P C board Is fuse F64 blown Replace the fuse Is the input voltage to the power board Replace the reactor 230V AC Is the input voltage to the outdoor electronic control P C board 325V DC No Replace the power board Yes Replace the outdoor electronic control P C board OC322G 81 SUZ KA50 60 71VA TH SUZ KA60VAR2 TH When unit cannot operate neither by the remote controller nor by EMERGENCY OPERATION switch Indoor unit does not operate Outdoor unit does not operate How to check miswiring and serial signal error when outdoor unit does not work For wireless remote controller use model 1 Li As for indoor unit C Turn OFF the power supply 1 Is there rated voltage in No Check the power the power supply suppl Yes Turn ON the power supply Y Is there rated voltage between No outdoor terminal block S1 and Check the wi 52 Yes Press EMERGENCY OPERATION switch once Y Does the la
130. hermistor R Flared connection Strainer Receiver 100 coil heating ON 5 Stop valve Capillary tube cooling OFF 3 6X 2 4X50 Refrigerant pipe 26 35 Refrigerant flow in cooling with heat insulator gt Refrigerant flow in heating Unit mm SUZ KA71VA TH SUZ KAT71VA TH OUTDOOR UNIT Capillary tube 1 8 0 6 1000 Oil separator High pressure switch Refrigerant pipe 15 88 with heat insulator 4 way valve Stop valve nV with service port Flared connection Strainer Defrost Ambient 100 thermistor exchanger U temperature thermistor Discharge RT65 temperature thermistor RT62 Outdoor heat exchanger temperature thermistor RT68 Compressor LEV Strainer 100 Strainer Receiver 100 R V coil heating ON cooling OFF Capillary tube 3 6 22 4 50 gt Refrigerant flow cooling gt Refrigerant flow in heating Stop valve Refrigerant pipe 9 52 with heat insulator OC322G 26 SUZ KA25VA TH SUZ KA25VAH TH SUZ KA25VAR1 TH SUZ KA25VAHR1 TH SUZ KA35VA TH SUZ KA35VAH TH SUZ KA35VAR1 TH SUZ KA35VAHR1 TH MAX REFRIGERANT PIPING LENGTH Refrigerant piping Models Max length m A Gas Liquid Piping size O D mm SUZ KA25VA TH SUZ KA35VA TH SUZ KA25VAH TH SUZ KA35VAH TH SUZ KA25VAR1 TH SUZ KA35VAR1 TH SUZ KA25VAHR1 TH SUZ KA35VAHR1 TH MAX
131. igent power module For wireless remote controller use model Turn ON the power supplv and press the Is there 230V AC between CN721 and on the power P C board 3 minutes after the power supply is turned ON Yes Replace the power P C board EMERGENCY OPERATION switch COOL switch For wired remote controller use model Turn ON the power supply and press the button twice COOL mode P OC322G No Defective R V coil Defective 4 way valve 73 SUZ KA25 35VA H TH Outdoor fan motor does not operate D Check of outdoor fan motor Rotate the outdoor fan slowly by hand and measure the Is the resistance between each terminal of Yes Disconnect CN932 Turn ON the voltage of CN931 Measurement gt the inverter gt of feedback output outdoor fan motor normal PC board power supply B OM Refer to 12 4 board etween D and GX Between and No Between and Inverter P C board Solder side CN931 CN932 Does the voltage between each terminal repeat 5V No and OV DC by turns Fixed to either 5V or OV DC Yes Y Does the outdoor fan rotate smoothly No Y Yes Replace the outdoor fan motor Check the inverter P C board Refer to 12
132. igerant pipe 6 35 with heat insulator Stop valve with strainer SUZ KA35VAR1 TH SUZ KA35VAHR1 TH OUTDOOR UNIT Refrigerant pipe 9 52 with heat insulator E a Flared connection pele Stop ae with service Flared connection N Capillary tube LEV with service Unit mm 4 way valve Discharge temperature thermistor Ambient temperature thermistor RT65 Capillary tube x 3 0 1 8 600 2 Strainer 100 R V coil heating ON cooling OFF Refrigerant flow in cooling gt Refrigerant flow in heating Unit mm valve EA lt 4 Outdoor heat exchanger temperature Outdoor ermistor lu Muter heat RT68 temperature exchanger thermistor RT62 Compressor Ambient temperature thermistor RT65 Defrost oS thermistor c3 RT61 lt lt Capillary tube 23 0 1 8 600 2 ii Strainer 100 3 0x 2 0x240 gt lt R V coil heating ON PR cooling OFF H 000 valvo Refrigerant pipe 6 35 with heat insulator OC322G gt Refrigerant flow in cooling gt Refrigerant flow in heating 24 SUZ KASOVA TH SUZ KASOVA TH Unit mm SUZ KA60VA TH SUZ KAGOVA TH OUTDOOR UNIT Refrigerant pipe 912 7 SUZ KASOVA Muffler with heat insulator 415 88 SUZ KA60VA 4 way 100 Stop valve with service Ps Outdoor
133. imes Reconnect compressor connector System that the compressor stops for Check the inverter compressor overcurrent protection or start up Check the stop valve failure protection within 1 minute after start up Operation indicator lamp of the indoor unit only the wireless remote controller use model blinks twice Refer to 12 2 1 3 and 12 2 3 Outdoor pattern OC322G 61 SUZ KA50VA SUZ KA60VA SUZ KA71VA Except for SUZ KA50VAR2 TH D indication LED2 Abnormal point Failure mode Details of abnormal Detecting method Check point Once Twice 3 times 4 times 9 times Outdoor thermistors Discharge temperature thermistor When a short circuit is detected in the thermistor during operation or when an open circuit is detected in the thermistor after 10 minutes of compressor start up Defrost thermistor When a short circuit is detected in the thermistor during operation or when an open circuit is detected in the thermistor after 5 minutes of compressor start up Ambient temperature thermistor Fin temperature thermistor P C board temperature thermistor When a short or open circuit is detected in the thermistor during operation Check the outdoor thermistors Replace the outdoor electronic control P C board Outdoor heat exchanger temperature thermistor When a short circuit is detected in the thermi
134. in outdoor unit has been changed to prevent any other refrigerant being charged into the unit Cap size has been changed from 7 16 UNF with 20 threads to 1 2 UNF with 20 threads R410A tools Can R22 tools be used Description R410A has high pressures beyond the measurement range of existing Gauge manifold No gauges Port diameters have been changed to prevent any other refrigerant from being charged into the unit Charge hose Hose material and cap size have been changed to improve the pressure resistance Gas leak detector Dedicated for HFC refrigerant _ Torque wrench Flare tool ie o F bar hole has been enlarged to reinforce the spring strength in the tool Flare gauge _____ Provided for flaring work to be used with R22 flare tool Provided to prevent the back flow of oil This adapter enables you to use adapter vacuum pumps It is difficult to measure R410A with a charging cylinder because the refrigerant charging refrigerant bubbles due to high pressure and high speed vaporization No Not substitutable for RA10A Yes Substitutable for R410A OC322G 5 2 Refrigerant piping O Specifications Use the refrigerant pipes that meet the following specifications Outside diameter Wall thickness 3 Insulation material For liquid M Heat resisting foam plastic 4 Specific gravity 0 045 Thickness Forge e7 f os emm i588 19 Use a copper pipe or a copper alloy seamless pipe
135. ischarge temperature Refer to 12 5 How to check inverter compressor 8 time flash 2 5 seconds OFF DC voltage of inverter cannot be detected DC voltage normally 9 time flash 2 5 seconds OFF Overcurrent Compressor open 10 time flash phase 2 5 seconds OFF Each phase current of compressor cannot be detected normally Each phase current of compressor Reconnect compressor connector Refer to 12 5 How to check inverter compressor Large current flows into intelligent power module IPM The open phase operation of compressor is detected The interphase short out occurs in the output of the intelligent power module IPM The compressor winding shorts out 14 time flash 2 5 seconds OFF Stop valve Closed valve Closed valve is detected by compressor current Check stop valve NOTE Blinking patterns of this mode differ from the ones of Troubleshooting check table 12 3 OC322G 64 12 3 Troubleshooting check table SUZ KA25VA H SUZ KA35VA H Except for SUZ KA25 35VA H R1 TH NOTE 1 The location of LED is illustrated at the right figure Refer to 12 6 1 2 LED lights up during normal operation Symptom LED indication Abnormal point Condition Detection method Inverter P C board Parts side LED Flashing Check point Outdoor unit does not operate 1 time flash every 2 5 seconds Outdoor power system Wh
136. isconnect the following connectors Except for SUZ KA50VAR2 TH lt Electric control P C board gt CN931 and CN932 Fan motor Propeller SUZ KA50VAR2 TH lt Inverter P C board gt CN931 and CN932 Fan motor 4 Remove the propeller 5 Remove the screws fixing the fan motor 6 Remove the fan motor OC322G 111 OPERATING PROCEDURE PHOTOS 6 Removing the compressor and 4 way valve Photo 10 1 Remove the top panel cabinet and service panel Refer to 1 2 Remove the back panel Refer to 1 3 Remove the inverter assembly Refer to 2 4 Recover gas from the refrigerant circuit NOTE Recover gas from the pipes until the pressure gauge shows 0 kg cm2 0 MPa 5 Detach the welded part of the suction and the discharge pipe connected with compressor Photo 11 6 Remove the compressor nuts 7 Remove the compressor 8 Detach the welded part of 4 way valve and pipe Photo 10 Welded parts of 4 way valve Photo 11 R V coil Welded part of the dis charge pipe Welded part of the suction pipe 7 Removing the reactor Photo 12 1 Remove the top panel Refer to 1 2 Disconnect the reactor lead wire 3 Remove the screws of the reactor and remove the reactor Screws of the reactor OC322G 112 14 PARTS LIST non RoHS compliant SUZ KA25VA TH SUZ KA35VA TH SUZ KA25VAH TH SUZ KA35VAH TH 14 1 OUTDOOR UNIT ELECTRICAL PARTS Part numbers
137. l out the outdoor heat exchanger temperature thermistor from its holder Photo 6 6 Pull out the ambient temperature thermistor from its holder Discharge temperature thermistor 22 107 OPERATING PROCEDURE PHOTOS 5 Removing outdoor fan motor 1 Remove the cabinet and panels Refer to 1 2 Disconnect the following connectors lt lnverter P C board gt CN932 Fan motor 9 Remove the propeller nut Photo 7 4 Remove the propeller Photo 7 5 Remove the screws fixing the fan motor Photo 7 6 Remove the fan motor 6 Removing the compressor and 4 way valve 1 Remove the cabinet and panels Refer to 1 2 Remove the inverter assembly Refer to 2 9 Recover gas from the refrigerant circuit NOTE Recover gas from the pipes until the pressure gauge shows 0 kg cm 0 MPa 4 Detach the welded part of the suction and the discharge pipe connected with compressor 5 Remove the nuts of compressor legs 6 Remove the compressor 7 Detach the welded part of pipes connected with 4 way valve Photo 8 OC322G 108 Photo 6 Outdoor heat exchanger tempera ture thermistor Defrost thermistor Propeller Propeller nut Photo 8 Welded parts of 4 way valve SUZ KA50VA TH SUZ KA60VA TH SUZ KA71VA TH 592 5 502 502 71 SUZ KA50VAR2 TH SUZ KA60VAR2 TH OUTDOOR UNIT NOTE Turn OFF power suppl
138. m Indication LED1 Red LED2 Yellow Abnormal point Condition Condition Correspondence Outdoor unit operates Once Lighting Primary current protection When the input current exceeds 15A Secondary current protection When the current of the compressor exceeds 15A Twice Lighting High pressure protection When the indoor gas pipe temperature exceeds 45 C during heating Defrosting in cooling When the indoor gas pipe temperature falls 3C or below during cooling These symptoms do not mean any abnormality of the product but check the following points Check if indoor filters are clogged Check if refrigerant is short Check if indoor outdoor unit air circulation is short cycled 3 times Lighting Discharge temperature protection When the discharge temperature exceeds 100 C during operation Check refrigerant circuit and refrigerant amount Refer to 12 5 Check of LEV Refer to 12 5 Check of outdoor thermistors Lighting Low discharge temperature protection When the frequency of the compressor is kept 80Hz or more and the discharge temperature is kept under 39 C for more than 20 minutes Refer to 12 5 Check of LEV Check refrigerant circuit and refrigerant amount 5 times Lighting Cooling high pressure protection When the outdoor heat exchanger temperature exceeds 58 C during operation This symptom does not m
139. mes within 1 minute after the compressor gets started or when converter protection stop or bus bar voltage protection stop is continuously performed three times within 3 minutes after start up Check the connection of the compressor connecting wire Refer to 12 5 0 How to check inverter compressor Check the stop valve Lightning Discharge temperature thermistor When a short circuit is detected in the thermistor during operation or when an open circuit is detected in the thermistor after 10 minutes of compressor start up Refer to 12 5 W Check of outdoor thermistor Lightning 4 times Fin temperature thermistor P C board temperature thermistor When a short or open circuit is detected in the thermistor during operation Refer to 12 5 W Check of outdoor thermistor Replace the outdoor electronic control P C board Lightning 5 times Ambient temperature thermistor When a short or open circuit is detected in the thermistor during operation Outdoor heat exchanger temperature thermistor When a short circuit is detected in the thermistor during operation or when an open circuit is detected in the thermistor after 5 minutes in cooling and 10 minutes in heating of compressor start up Defrost thermistor When a short circuit is detected in the thermistor during operation or when an open circuit is detected in the thermistor after 5 minutes of compressor start up
140. mmediately after starting up M Check of inverter P C board Check the outdoor fan motor Refer to12 5 0 Is the fuse F901 blown on Yes the inverter P C board No Check the connection of the connectors CN931 CN932 of outdoor fan motor If the connection is poor make it correct CN931 CN932 Operate the outdoor unit by starting EMERGENCY OPERATION Check the LED indication on No Check the corresponding parts the inverter P C board T following LED indication Does the LED blink 10 time Refer to 12 3 Yes 10 time blink Replace the inverter P C board OC322G 77 SUZ KA25 35VA H TH SUZ KA25 35VA H TH How to check miswiring and serial signal error when outdoor unit does not work For wireless remote controller use model Turn OFF the power supply Is there rated voltage No Check the power the power supply supply Yes Turn ON the power supply Y Is there rated voltage between No outdoor terminal block S1 and Check the wiring S2 4 Yes Press EMERGENCY OPERATION switch once Y Does the lamp of OPERATION INDICATOR lamp light up lt Confirmation of the power to the indoor unit gt Yes Is there any miswiring poor contact or
141. mp of OPERATION INDICATOR lamp light up Confirmation of the power to the indoor unit No Yes Is there any miswiring poor contact or wire disconnection of the indoor outdoor connecting wire Is serial signal error indicated 6 minutes later gt gt Make them correct Yes No lt Y A Y Turn OFF the power supply Check once more if the indoor outdoor A Seen ee Mee LE Bz Connecting wire is Not mis wining o UNV ll col cc L AI Short circuit outdoor terminal block is S2 x1 Miswiring may damage indoor electronic control Outdoor electronic control P C board and S3 P C board during the operation arts side 1 Be sure to confirm the wiring is correct before the operation starts 3 Be sure to check this within minutes after turning Q Y ON After 3 minutes LED blinks 6 times Even when AR Turn ON the power supply the inverter P C board or the outdoor electronic control Blinking P C board is normal LED blinks 6 times after 3 minutes Does the LED the P C board or the outdoor electronic control P C board No Replace the inverter P C board repeat 3 6 second OFF and 0 8 second Lighted or the outdoor electronic control quick blinking 9 P C board 2 or not lighted 2 Be
142. n of the remote controller the set temperature is displayed with the remote controller headed towards the indoor unit x1 Y Expansion valve operates in full opening direction Y x1 Regardless of normal or abnormal condition a short beep Do you hear the expansion valve click is emitted once the signal is received click sass 2 Do you feel the expansion valve vibrate Yes on touching it No Y the expansion valve No Yes Measure each voltage between connector pins of CN724 on the inverter P C board Y 1 Pin Pin Does the resistance of LEV 2 Pin Pin coil have the characteristics 3 Pin Pin Refer to 12 4 4 Pin No Is there about 3 5 VAC between each NOTE Measure the voltage by an analog Replace the LEV coil tester ves Replace the expansion valve NOTE After check of LEV do the undermentioned operations 1 Turn OFF the power supply and turn ON it again 2 Press RESET button on the remote controller OC322G 91 Check of LEV Expasion valve Turn on power supply to the outdoor unit after checking Yes LEV coil is fixed to the LEV body securely Is click click sound heard Or do you feel vibration of the LEV coil with a hand Y No Yes Disconnect the connector CN724 is there nor mal resistance to LEV coil jv Repl
143. n temperature thermistor RT64 21218 reception From electronic control P C board 5V DC pulse wave CN5 Primary current detection Connect to the noise filter OC322G 101 12 6 7 Inverter board SUZ KA50VAR2 TH Smoothing Smoothing Smoothing R V coil Backside DB61 capacitor capacitor capacitor Fuse F701 CN721 C62 C61 250V3 15A 230 VAC DC 260 300 C63 lt gt Fuse F801 AC 230 V 250 V 3 15 A I me Fuse F901 B Sema gt o o 250 V 3 15 A a li hl sel _ Output to oe drive e y 58 Boger qt compressor ell i Qj B B 3 gt LDU OI cg o on ay 0 29 230 LDV Tp t GER mem Cae L PN JT U er guae B LDW i Qe EJ Nl LA SFR sr H ot He Sa Lii Br a il DUO i De sess ll i phe sere 2259 TH E
144. nnecting wire and remove the back panel Refer to 1 3 Remove the inverter assembly Refer to 2 4 Pull out the discharge temperature thermistor from its holder See Photo 5 5 Pull out the defrost thermistor from its holder See Photo 6 OC322G 104 Photo 3 Photo 4 Heat sink Photo 5 Screws of the relay panel Screws of the ground Inverter P C board Power P C board Screw of the power P C board R V coil Discharge temperature thermistor OPERATING PROCEDURE PHOTOS 5 Removing outdoor fan motor Photo 6 1 Remove the top panel cabinet and service panel Refer to 1 2 Disconnect the power supply and indoor outdoor connecting wire and remove the back panel Refer to 1 9 Disconnect the connectors for outdoor fan motor 4 Remove the propeller nut 5 Remove the propeller 6 Remove the screws fixing the fan motor See Photo 7 7 Remove the fan motor 6 Removing the compressor and 4 way valve 1 Remove the top panel cabinet and service panel Refer to 1 2 Disconnect the power supply and indoor outdoor connecting wire and remove the back panel Refer to 1 9 Remove the inverter assembly Refer to 2 4 Recover gas from the refrigerant circuit Defrost NOTE Recover gas from the pipes until the pressure gauge thermistor shows 0 kg cm2 0 MPa 5 Detach the welded part of the suction and the discharge Photo 7 Screws of the outdoor fan
145. nsible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W WB Wet bulb temperature OC322G 45 PERFORMANCE DATA COOLING operation at Rated frequency SEZ KC25VA SUZ KA25VA H CAPACITY 2 5 KW INPUT 730 W SHF 0 74 OUTDOOR D B C INDOOR 40 W B C Q_ SHC SHF INPUT 18 126 0 56 759 20 106 044 781 18 135 0 60 759 20 1 45 048 781 22 0 92 0 36 818 18 144 064 759 20 1 225 0 52 781 22 102 040 818 18 153 0 68 759 20 1 34 0 56 781 22 1 12 044 818 24 0 86 0 32 840 20 144 0 60 781 22 1 222 048 818 24 0 97 0 36 840 18 171 0 76 759 20 1 54 0 64 781 22 133 0 52 818 24 108 040 840 26 0 80 0 28 869 18 1 80 0 80 759 20 163 0 68 781 22 143 0 56 818 24 1 19 044 840 26 0 91 0 32 869 18 189 0 84 759 20 1 73 0 72 781 22 153 0 60 818 24 130 048 840 26 103 036 869 18 198 0 88 759 20 182 0 76 781 22 163 0 64 818 24 140 0 52 840 26 114 0 40 869 18 2 07 0 92 759 20 1 92 0 80 781 22 173 0 68 818 24 151 0 56 840 26 125 0 44 869 18 2 46 0 96 759 20 2 02 0 84 781 22 184 072 818 24 162 0 60 840 26 1 37 048 869 18 225 1 00 759 20 2 11 0 88 781 22 194 0 76 818 24 173 0 64 840 26 148 0 52 869 NOTE Q Total capacity kW SHF Sensible heat factor DB Dry bulb temperature SHC Sensible heat capacity KW INPUT Total power input W
146. nts Current detecting resistor R831 25mQ 5W Current limiting resistor R64A R64B 5 10 5W Terminal block TB1 TB2 3P Relay X63 G5NB 1a Relay X64 G4A 1A PS Relay X66 G5NB 1a G5NB 1a R V coil 2154 STF 01AJ503 Heater protector 26H Open 45 C Open 45 C SUZ KASOVA TH SUZ KAS0VA TH SUZ KA60VA TH SUZ KAG60VA TH SUZ KA71VA TH SUZ KA71VA1 TH SUZ KA60VAR2 TH Model SUZ KASOVA TH TERANA Ta SUZ KA71VA TH liem SUZ KASOVA TH SUZ KA60VAR2 TH SUZ KA71VA TH Smoothing capacitor CB1 2 3 5604F 450V Current transformer CT1 2 ETQ19Z68AY Current transformer CT61 ETQ19Z53AY Fuse F64 250V 2A Fuse F801 250V 3 15A Fuse F911 250V 1A Intelligent power module HC930 PS21661 RZ High pressure switch HPS ACB DB156 for R2 ACB DB156 Intelligent power module IPM PS21244 A Reactor L 340uH 20A Expansion valve coil LEV DC12V Power factor controller PFC PS51259 A Resistor R64A B 100 10W Resistor R937A B 1 10 2W 2 Resistor RS1 4 0 040 7W Solenoid coil relay SSR61 TLP3506 Terminal block TB1 3P Terminal block TB2 3P Relay X64 G4A R V coil 2154 220 240V OC322G 10 SUZ KA25VAR1 TH SUZ KA25VAHR1 TH SUZ KA35VAR1 TH SUZ KA35VAHR1 TH 502 2 item Model sUZ KAZSVARI TH SUZ KA25VAHR1 TH
147. ol P C board has been changed Noise filter P C board has been changed Length of fan motor lead wire has been changed Shape of relav panel has been changed Symbol on terminal block has been changed to 51 52 53 Control method between indoor and outdoor unit has been changed OO N INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT This room air conditioner adopts HFC refrigerant R410A which never destroys the ozone layer Pay particular attention to the following points though the basic installation procedure is same as that for R22 conditioners As R410A has working pressure approximate 1 6 times as high as that of R22 some special tools and piping parts materials are required Refer to the table below Take sufficient care not to allow water and other contaminations to enter the R410A refrigerant during storage and installation since it is more susceptible to contaminations than R22 G For refrigerant piping use clean pressure proof parts materials specifically designed for R410A Refer to 2 Refrigerant piping Composition change may occur in R410A since it is a mixed refrigerant When charging charge liquid refrigerant to prevent composition change LL Newer Previous LII c G w Bg c x1 Ozone Depletion Potential based on CFC 11 3 2 Global Warming Potential based on CO
148. oller Output pattern A Errors detected by indoor unit Wired remote controller Wireless remote controller Check Beeper Symptom Remark Number of times 1 1 Intake sensor error P2 Pipe TH2 sensor error P9 2 Pipe TH5 sensor error E6 E7 3 Indoor outdoor unit communication error P4 4 Drain sensor error Float switch connector open P5 5 Drain pump error P6 6 Freezing Overheating protection operation EE 7 Communication error between indoor and outdoor units P8 8 Pipe temperature error E4 E5 9 Remote controller signal receiving error 10 11 ES Fb 12 Indoor unit control system error memory error etc EO Remote controller transmission error E1 E2 Remote controller control board error Output pattern B Errors detected by unit other than indoor unit outdoor unit etc Wired remote controller Wireless remote controller P Symptom Remark Number of times E9 1 Indoor outdoor unit communication error Transmitting error Outdoor unit UP 2 Compressor overcurrent interruption U3 U4 3 Open short of outdoor unit thermistors UF 4 Compressor overcurrent interruption When compressor locked U2 5 Abnormal high discharging temperature insufficient refrigerant U1 Ud 6 Abnormal high pressure 63H worked Overheating protection operation U5 7 Abnormal temperature of he
149. or Protection Cooling Low ambient temperature operation Ambient temperature thermistor Heating Defrosting Heater SUZ KA25VA H R1 TH SUZ KA35VA H R1 TH Actuator Sensor Purpose Outdoor fan fan Defrost Compressor motor R V coil motor heater Discharge temperature thermistor Protection Indoor coil temperature Cooling Coil frost prevention thermistor Heating High pressure protection Defrost thermistor Heating Defrosting Ambient temperature Cooling Low ambient temperature operation thermistor Heating Defrosting Heater Outdoor heat exchanger Cooling Low ambient temperature operation O Fin temperature thermistor Protection Q temperature thermistor Cooling High pressure protection OC322G 57 SUZ KA50VA VA VAR2 TH Sensor SUZ KA60VA VA VAR2 TH SUZ KAT71VA VA TH Actuator Purpose Compressor Outdoor LEV fan motor Discharge temperature thermistor Protection Indoor pipe temperature thermistor Cooling Coil frost prevention Heating High pressure protection Defrost thermistor Heating Defrosting Fin temperature thermistor Protection Ambient temperature thermistor Protection Outdoor heat exchanger temperature 11 SUZ KA25VA H Cooling High pressure protec
150. or operating Replace the power board 13 times Goes out Outdoor fan motor hen failure occurs continuously three times within 30 seconds after the fan gets started Refer to 12 5 Check of outdoor fan motor Lighting 8 times Current sensor protection When a short or open circuit is detected in the current sensor during compressor operating Replace the power board Lighting 11 times Communication between P C boards protection Communication error occurs between the outdoor electronic control P C board and power board for more than 10 seconds Check the connecting wire between outdoor electronic control P C board and power board Lighting 12 times Zero cross detecting circuit protection NOTE 1 The location of LED is illustrated at the right figure 2 LED is lighted during normal operation When zero cross signal cannot be detected while the compressor is operating Check the connecting wire among outdoor electronic control P C board noise filter P C board and power board Outdoor electronic control P C board Parts side The flashing frequency shows the number of times the LED blinks after every 2 5 second OFF Example When the flashing frequency is 2 OFF 2 5 second OFF OC322G 0 5 second ON 2 5 second OFF 66 LED2 LED1 till V V Lighting e a 0 5 second ON Sympto
151. r except RT64 s thermistor normal Y When RT64 is abnormal replace the inverter Refer to 12 6 3 or 12 6 7 No board or the outdoor power board yes Reconnect connector of thermistor Turn ON the power supply and press EMERGENCY OPERATION switch Does the unit operate for 10 minutes or more Replace the inverter P C board without showing thermistor abnormality No or the outdoor power board yes OK Cause is poor contact Thermistor Connector Pin No Defrost Between CN641 pin1 and pin2 Discharge temperature Between CN641 pin3 and pin4 Fin temperature Between CN642 pin1 and pin2 Inverter P C board Ambient temperature Between CN643 pin1 and pin2 Outdoor heat exchanger temperature Between CN644 pin1 and pin3 OC322G 89 h Check of R V coil SUZ KA25 35VA H R1 TH SUZ KA50VAR2 TH First of all measure the resistance of R V coil to check if the coil is defective Refer to 12 4 In case CN721 is not connected or R V coil is open voltage is generated between the terminal pins of the connector although any signal is not being transmitted to R V coil Check if CN721 is connected Unit operates COOL mode even if it is set to HEAT mode Disconnect connector CN61 between the compressor and the intelligent power module Turn ON the power supply and press EMERGENCY OPERATION switch twice HEAT mode
152. ressor Check the stop valve Check the PAM module SUZ KA25VA H R1 TH SUZ KA35VA H R1 TH SUZ KA50VAR2 TH LED indication Outdoor P C board Abnormal point Failure mode protection Condition Correspondence None Normal Reconnect connectors Refer to 12 5 How to check inverter compressor Check stop valve Overcurrent protection stop is continuously performed 3 times within 1 minute after the compressor gets started Outdoor power system Thermistor shorts or opens during compressor Refer to 12 5 amp Check of running outdoor thermistors Defective outdoor thermistors can be identified by checking the blinking pattern of LED Discharge temperature thermistor Defrost thermistor 1 time flash every 2 5 seconds 3 time flash 2 5 seconds OFF 4 time flash 2 5 seconds OFF Fin temperature thermistor P C board temperature thermistor 2 time flash 2 5 seconds OFF 11 time flash 2 5 seconds OFF Ambient temperature thermistor Large current flows into intelligent power module Reconnect compressor connector Refer to 12 5 How to check inverter compressor Check stop valve Overcurrent 12 time flash 2 5 seconds OFF Compressor synchronous Waveform of compressor current is distorted abnormality Compressor start Reconnect compressor connector Refer to 12 5 How to check up failure protection inve
153. rter compressor Discharge temperature Temperature of discharge temperature thermistor exceeds 116 C compressor stops Compressor can restart if discharge temperature thermistor reads 100 C or less 3 minutes later Check refrigerant circuit and refrigerant amount Refer to 12 5 9 Check of LEV High pressure Temperature indoor coil thermistor exceeds 70 C in HEAT mode Temperature defrost thermistor exceeds 70 C in COOL mode Check refrigerant circuit and refrigerant amount Check stop valve Fin temperature P C board temperature 7 time flash 2 5 seconds OFF Temperature of fin temperature thermistor on the inverter P C board exceeds 75 80 C or temperature of P C board temperature thermistor on the inverter P C board exceeds Check around outdoor unit Check outdoor unit air passage Refer to 12 5 Check of outdoor fan motor 70 75 C Refer to 12 5 Check of outdoor fan motor Refer to 11 5 Check of inverter P C board Replace the inverter P C board Outdoor fan has stopped 3 times in a row within 30 seconds after outdoor fan start up Outdoor fan motor 5 time flash 2 5 seconds OFF Nonvolatile memory data cannot be read properly Nonvolatile memory data Temperature of discharge temperature Refer to 12 5 9 Check of LEV thermistor has been 50 or less for 20 minutes Check refrigerant circuit and refrigerant amount D
154. scharge temperature overheat protection When discharge temperature exceeds 116 C Check refrigerant circuit and refrigerant amount Check the LEV Check the outdoor thermistors High pressure protection HPS protection When high pressure is detected with the high pressure switch HPS during operation High pressure protection Overheat protection When the indoor coil thermistor TH5 exceeds 70 C in HEAT mode When the outdoor heat exchanger thermistor exceeds 70 C in COOL mode Check refrigerant circuit and refrigerant amount Check the stop valve Low discharge temperature Low discharge temperature protection When the frequency of the compressor is kept 80Hz or more and discharge temperature is kept under 39 C for more than 20 minutes Check refrigerant circuit and refrigerant amount Check the LEV Outdoor fan Outdoor fan protection When outdoor fan has stopped within 30 seconds 3 times in a row after outdoor fan start up unit stops Check the outdoor fan motor Outdoor power system Outdoor power system When IPM protection stop or lock protection stop is continuously performed 3 times within 1 minute after the compressor get started or when converter protection stop or bus bar voltage protection stop is continuously performed 3 times within 3 minutes after start up 63 Reconnect compressor connector Check the inverter comp
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156. ss TEST button twice Y Does POWER lamp on remote controller light up lt Confirmation of the power to the indoor unit gt Yes Y Is the self check of the remote controller displayed 6 minutes after Yes Serial signal error display POWER lamp blinks lt Check the power supply Check the wiring No Is there any mis wiring poor contact No or wire disconnection Make them sure of the indoor outdoor connecting wire Y A Y Turn OFF the power supply Check once more if the indoor outdoor Short circuit outdoor terminal block is S2 and S3 1 Turn ON power supply Does the LED on the inverter P C board 1 Miswiring may damage indoor electronic control P C board during the operation Be sure to confirm the wiring is correct before the operation starts 3 Be sure to check this within minutes after turning ON After 3 minutes LED blinks 6 times Even when the inverter P C board or the outdoor electronic control P C board is normal LED blinks 6 times after 3 minutes No Replace the inverter P C board gt or the outdoor electronic control Lighted P C board 2 or not lighted 2 Be careful of the residual voltage of smoothing capacitor Is there any error of the indoor outdoor connecting wire
157. ssor fe come i 4 i 4 i e Rotational frequency feedback signal of outdoor fan motor gm m n ETT Tg CE E Output to drive Jumper wire for change Connecting wire with LEV e outdoor fan motor in defrost setting JS power P C board connector E 5 CN932 ee 5 an go 55 Connector for indoor Front side of unit D BE outdoor communication 2r E CN601 3 25 S E WX SEQ S E S ES 266 lt o 56 050 lt 59 59 Defrost thermistor RT61 Fin temperature thermistor RT64 A Ambient temperature thermistor RT65 Discharge temperature thermistor RT62 0 Es o o o o c c G G 2 E o o 22 x 0 0 0 10 20 30 40 50 60 70 80 20 10 0 10 20 30 40 90 10 20 30 40 50 60 70 80 100 11 110 120 Temperature C Temperature C OC322G 96 12 6 2 Power board SUZ KA25VA TH SUZ KA35VA TH SUZ KA25VAH TH SUZ KA35VAH TH Back side of unit Front side of unit Varistor Varistor Varistor NR63 NR62 NR64 230V AC R V coil CN721 230V AC Connecting wire with 230V AC inverter P C board Heater connector CN726 CN722 Refer to 12 5 Refer to 12 5 SUZ KA25VAH SUZ KA35VAH OC322G 97 12 6 3 Inverter P C board SUZ KA25VAR1 TH SUZ KA35VAR1 TH SUZ KA25VAHR1 T
158. stop valve Check the power module PAM module 3 times Goes out Discharge temperature protection When temperature of discharge temperature thermistor exceeds 116 compressor stops Compressor can restart if discharge temperature thermistor reads 100 C or less 3 minutes later Check the amount of gas and refrigerant circuit Refer to 12 5 Check of LEV Goes out Fin temperature protection When the fin temperature exceeds 87 C during operation P C board temperature protection When the P C board temperature exceeds 70 C during operation Check refrigerant circuit and refrigerant amount Refer to 12 5 Check of LEV 5 times Goes out High pressure protection When high pressure is detected with the high pressure switch HPS during operation When the outdoor heat exchanger temperature exceeds 70 C during cooling or when indoor gas pipe temperature exceeds 70 C during heating Check around of gas and the refrigerant circuit Check of stop valve 8 times Goes out Converter protection When a failure is detected in the operation of the converter during operation Replace the power board 9 times Goes out Bus bar voltage protection 1 When the bus bar voltage exceeds 400V or falls to 200V or below during compressor operating Bus bar voltage protection 2 When the bus bar voltage exceeds 400V or falls to 50V or below during compress
159. stor during operation or when an open circuit is detected in the thermistor after 5 minutes in cooling and 10 minutes in heating of compressor start up Check the outdoor thermistors 5 times Outdoor control system EEPROM When nonvolatile memory data cannot be read properly unit stops Replace the outdoor electronic control P C board 6 times 7 times Goes out Goes out Converter control system Communication error between P C boards When the communication between boards protection stop is continuously performed twice Communication between P C boards protection Communication error occurs between the electronic control P C board and power board for more than 10 seconds Check the connecting wire between outdoor electronic control P C board and power board Current sensor Current sensor protection stop is continuously performed twice Current sensor protection When a short or open circuit is detected in the current sensor during compressor operating Replace the power board Zero cross detecting circuit The protection stop of the zero cross detecting circuit is continuously performed 10 times Zero cross detecting circuit protection When zero cross signal cannot be detected while the compressor is operating Check the connecting wire among electronic control P C board noise filter P C board and power board Convert
160. t Earth the unit Yes Extend distance between the antennas the indoor unit and or the antennas and the distance between the antennas and the Yes outdoor unit outdoor unit within 3 m No Lies Vc uL Extend the distance between the TV sets and or is the distance between the TV sets Yes i ae a ME the TV sets or radios and the outdoor unit within 3 m alis No Are the antennas damaged Is the coaxial cable damaged Replace or repair the antenna Is there any poor contact in the anten Yes Replace or repair the coaxial cable na wiring N Is the indoor outdoor connecting wire Extend the distance between the indoor outdoor of the air conditioner and the wiring of connecting wire of the air conditioner and the wir the antennas close Yes ing of the antennas Even if all of the above conditions are fulfilled the electromagnetic noise may enter depending on the electric field strength the installation condition combination of specific conditions such as antennas or wiring Check the following before asking for service 1 2 3 4 Devices affected by the electromagnetic noise TV sets radios FM AM broadcast shortwave Channel frequency broadcast station affected by the electromagnetic noise Channel frequency broadcast station unaffected by the electromagnetic noise Layout of indoor ou
161. t 1 0 31 0 28 0 31 0 28 0 33 0 33 0 33 0 33 0 30 Model KNBO73FDVH C KNBO73FFDH C KNBO92FCAH KNBO92FFAH C SNB130FLDH or SNB130FLDH Output 550 550 650 650 850 Winding U V 1 53 U W 1 53 U V 1 70 U W 1 70 U V 0 49 U W0 49 U V 1 91 U W 1 91 U V0 45 U W0 45 resistance at 20 C V W 1 53 V W 1 70 V W 0 49 V W 1 91 V W 0 45 Model RCOJSO AL RC0J50 DB RC0J50 AL RC0J50 DB RCOJ60 AA WHT BLK 37 5 WHT BLK 37 0 WHT BLK 37 5 WHT BLK 37 0 WHT BLK 15 2 Q BLK RED 37 5 BLK RED 37 0 BLK RED 37 5 BLK RED 37 0 BLK RED 15 2 RED WHT 37 5 RED WHT 37 0 RED WHT 37 5 RED WHT 37 0 RED WHT 15 2 Power supply Electrical Compressor gata Winding resistance at 20 C Fan motor Air flow High Lowx m hl 2 058 1 938 2 058 1 938 2 004 2 004 2 940 1 650 2 940 2 210 Capa city Dimensions WxHxD mm 800x550x285 800x550x285 800x550x285 800x550x285 840x850x330 Weight 33 30 37 33 53 Sound level 1 46 48 53 51 55 53 Fan speediHighi Low rpm 810 650 880191051650 810 6502 agooro 6508 8405176078 880 800 630 840 760 880800630 800 480 800 620 Fan speed regulator 2 2 Refrigerant filling 0 90 1 60 capacity R410A Refrigerating oil Model 320 NEO22 320 NEO22 320 NEO22 320 NEO22 FLDH 450 FLDHt 600 NEO22 NOTE Test conditions are based on ISO 5151 Cooling Indoor D B 2
162. tdoor unit of the air conditioner indoor outdoor wiring earth wire antennas wiring from antennas receiver Electric field intensity of the broadcast station affected by the electromagnetic noise Presence or absence of amplifier such as booster Operation condition of air conditioner when the electromagnetic noise enters in 1 Turn OFF the power supply once and then turn ON the power supply In this situation check for the electromagnetic noise 2 Within 3 minutes after turning ON the power supply press OPERATE STOP ON OFF button on the remote controller for power ON and check for the electromagnetic noise 3 After a short time 3 minutes later after turning ON the outdoor unit starts running During operation check for the electromagnetic noise 4 Press OPERATE STOP ON OFF button on the remote controller for power OFF when the outdoor unit stops but the indoor outdoor communication still runs on In this situation check for the electromagnetic noise OC322G 95 12 6 Test point diagram and voltage 12 6 1 Inverter P C board SUZ KA25VA TH SUZ KA35VA TH SUZ KA25VAH TH SUZ KA35VAH TH Back side of unit 230V AC Smoothing capacitor Smoothing capacitor Smoothing capacitor DB61 DB61 C63C C63B C63A 280V 370V DC Fuse F801 Oca Soha Fuse 901 s 1 l phere A 124 28 LED monitor es pot T i I lamp Output to drive compre
163. terminal with locking mechanism The terminal without locking mechanism can be detached by pulling it out Check the shape of the terminal before detaching 1 Slide the sleeve and check if there is a locking lever or not 2 The terminal with this connector has the locking mechanism Sleeve Slide the sleeve Hold the sleeve and Pull the terminal while pull out the terminal pushing the locking slowly lever Connector SUZ KA25VA TH SUZ KA35VA TH SUZ KA25VAH TH SUZ KA35VAH TH OUTDOOR UNIT NOTE Turn OFF power supply before disassembling OPERATING PROCEDURE PHOTOS 1 Removing the cabinet Photo 1 1 Remove the screw fixing the service panel See Photo 2 2 Pull down the service panel and remove it See Photo 2 Screws 3 Disconnect the power supply and indoor outdoor connecting wire of the Screws of 4 Remove the screws fixing the top panel See Photo 1 top panel the cabinet Screws of 5 Remove the top panel See Photo 1 the top panel 6 Remove the screws fixing the cabinet 7 Remove the cabinet 8 Remove the screws fixing the back panel 9 Remove the back panel Photo 2 Screw of the Screws of service panel the cabinet Direction to remove Screws of the cabinet OC322G 103 OPERATING PROCEDURE PHOTOS 2 Removing the inverter assembly inverter P C board and power P C board 1 Remove the top panel cabinet and service panel Refer to 1
164. that are circled are not shown in the illustration Part No Part Name Symbol in Wiring Diagram Q tylunit SUZ KA25VAH TH SUZ KA35VA TH Remarks E02 838 337 REACTOR L61 1 1 E02 927 444 POWER P C BOARD 1 E02 931 444 POWER P C BOARD E02 927 490 R V COIL 21S4 E02 927 306 THERMISTOR SET RT61 RT62 DEFROST DISCHARGE E02 927 308 AMBIENT TEMPERATURE THERMISTOR RT65 E02 735 241 FUSE HOLDER E02 735 382 FUSE F61 250V 20A E02 573 375 TERMINAL BLOCK TB1 3P o NIOMA O N E02 927 374 TERMINAL BLOCK TB2 gt gt gt gt gt mu ma 207 168 451 INVERTER P C BOARD gt gt gt Including heat sink and RT64 E07 184 451 INVERTER P C BOARD Including heat sink and RT64 E07 169 451 INVERTER P C BOARD Including heat sink and RT64 E07 185 451 INVERTER P C BOARD Including heat sink and RT64 E02 127 382 FUSE F71 F801 250V 3 15A E02 661 385 OC322G VARISTOR NR62 NR63 NR64 113 SUZ KA25VA TH SUZ KA35VA TH SUZ KA25VAH TH SUZ KA35VAH TH 14 2 OUTDOOR UNIT STRUCTURAL PARTS AND FUNCTIONAL PARTS 20 19 18 17 16 15 14 10 9
165. the Y Does the LED on the inverter P C board or the outdoor electronic control P C board Replace the inverter P C board or the outdoor electronic control P C board repeat 3 6 second OFF and 0 8 second No ON quick blinking 3 Lighted x2 Yes or not 3X2 Be careful of the residual voltage of smoothing lighted capacitor Turn OFF the power supply Remove the short circuit between Is there any error of the in outdoor terminal block S2 and S3 door outdoor connecting wire Replace the indoor Turn ON the power supply such as the damage of the wire outdoor connecting lo Is there amplitude of 10 to 20 VDC between outdoor terminal block S2 and S3 Confirmation of serial signal wire intermediate connection poor contact to the terminal block No Is there any error of the in door outdoor connecting wire such as the damage of the wire intermediate connection poor contact to the terminal block No Is there rated voltage between indoor terminal block 51 and S2 Confirmation of power voltage Replace the indoor outdoor connecting wire Replace the indoor electronic control P C board Be sure to release the failure mode recall function after checking 94 SUZ KA25 35VA H R1 TH SUZ KA50VAR2 TH Electromagnetic noise enters into TV sets or radios Is the unit earthed g
166. the damage of the wire indoor outdoor between outdoor terminal block S2 No intermediate connection poor connecting wire and S3 Confirmation of serial contact to the terminal block A signal Turn OFF inverter controlled lighting No equipment Turn OFF the power supply and then Yes turn ON it again Is there any error of the Press EMERGENCY OPERATION Is there rated voltage between indoor outdoor connecting wire Replace the Switch indoor terminal block 81 and S2 such as the damage of the wire indoor outdoor Reinstall the lt Confirmation of power voltage gt intermediate connection poor connecting wire contact to the terminal block unit apart from No inverter contro Y Is serial signal lled lighting es No error indicated equipment Attach a filter on receiving Replace the indoor electronic control P C board section of the B indoor unit 6 minutes later Be sure to release the failure mode recall function after checking OC322G 78 SUZ KA25 35VA H TH How to check miswiring and serial signal error when outdoor unit does not work For wired remote controller use model Turn OFF the power supply Is there rated voltage in the power supply No l Ves Turn ON the power supplv Y Is there rated voltage between outdoor terminal block S1 and S2 No Yes Pre
167. thermistor on the heat sink exceeds 75 80 C or temperature of P C board temperature thermistor on the inverter P C board exceeds 70 75 C Check around outdoor unit Check outdoor unit air passage Refer to 12 5 D Check of outdoor fan motor 5 time flash 2 5 seconds OFF High pressure protec tion Indoor coil thermistor exceeds 70 in HEAT mode Defrost thermistor exceeds 70 in COOL mode Check refrigerant circuit and refrig erant amount Check stop valve 8 time flash 2 5 seconds OFF Compressor synchro nous abnormality The waveform of compressor current is distorted Reconnect connector of compres Sor Refer to 12 5 8 How to check in verter compressor 10 time flash 2 5 seconds OFF Outdoor fan motor Outdoor fan has stopped 3 times in a row within 30 seconds after outdoor fan start up eRefer to 12 5 Check of outdoor fan motor Refer to 12 5 Check of inverter P C board 12 time flash 2 5 seconds OFF Each phase current of compressor Each phase current of compressor cannot be detected nor mallv Refer to 12 5 How to check in verter compressor 13 time flash 2 5 seconds OFF DC voltage DC voltage of inverter cannot be detected normallv Refer to 12 5 How to check in verter compressor Outdoor unit operates 1 time flash 2 5 seconds OFF Frequency drop by current protection Current from power outlet re
168. tion CHANGE IN DEFROST SETTING lt JS gt When the JS wire of the outdoor Inverter P C board is cut soldered the defrost finish temperature is changed Refer to 12 6 1 SUZ KA25 35VA H TH Refer to 12 6 3 SUZ KA25 35VA H R1 TH Defrost finis SERVICE FUNCTIONS SUZ KA35VA H h temperature Jumper wire SUZ KA25VA SUZ KA25VAH SUZ KA35VA SUZ KA35VAH Soldered Initial setting 5 C 8 C 10 C 13 10 None cut 8 C 15 13 15 13 Serial No 9XP00121 67P00330 68P00331 Defrost finish temperature Jumper wire Serial No SUZ KA25VA SUZ KA25VAH SUZ KA35VA SUZ KA35VAH Soldered 8 C JS None Initial setting 15 C 9YP00122 12 TROUBLESHOOTING SUZ KA25VA H SUZ KA35VA H 12 1 Cautions on troubleshooting 1 Before troubleshooting check the following 1 Check the power supply voltage 2 Check the indoor outdoor connecting wire for miswiring Take care the following during servicing SUZ KASOVA SUZ KA60VA SUZ KA71VA 1 Before servicing the air conditioner be sure to turn OFF the main unit first with the remote controller and turn off the breaker 2 Be sure to turn OFF the power supply before removing the front panel the cabinet the top panel and the electronic control P C board 3 When removing the electrical parts be careful of the residual
169. tion indoor Dry bulb temperature 20 0 C Wet bulb temperature 14 5 Condition outdoor Dry bulb temperature 2 7 15 20 0 C Wet bulb temperature 1 6 12 14 5 C SUZ KA25VA H SUZ KA35VA H SUZ KA50VA SUZ KA60VA 4 0 4 0 7 0 7 0 35 z 35 6 0 6 0 5 3 0 5 3 0 5 50 5 5 0 5 5 5 5 225 25 40 4 0 c L ta a gt gt 5 2 0 5 2 0 5 3 0 5 3 0 o o o 8 8 2 15 215 220 2 20 A EN 2 5 10 15 20 25 C 2 55 10 15 20 25 C 2 5 10 15 20 25 C 2 5 10 45 20 25 C Ambient temperature C Ambient temperature C Ambient temperature C Ambient temperature C SUZ KA71VA 13 0 12 0 11 0 Outdoor unit current 2 5 10 15 20 25 C Ambient temperature C OC322G 38 PERFORMANCE DATA COOLING operation at Rated frequency SLZ KA25VA L SUZ KA25VA H CAPACITY 2 5 kW INPUT 690 W SHF 0 86 OUTDOOR D B C INDOOR 25 27 W B C SHF JINPUTI SHC 18 0 68 580 1 84 20 0 56 614 1 60 18 072 580 1 94 20 060 614 1 71 22 0 48 638 1 44 18 0 76 580 2 05 20 064 614 1 82 22 052 638 1 56 18 080 580 2 16 20 068 614 1 94 22 0 56 638 1 68 24 0 44 662 1 39 20 0 72 614 2 05 22 060 638 1 80 24 0 48 662 1 51 18 0 88 580 2 38 20 076 614 2 17 22 0 64 638 1 92 24 052 662 1 64 26 0 40 697 1 32 18 0 92 580 2 48 20 0 80 614 2 28 22 0 68 638 2 04 24 0 56 662 1 76 26 0 44 697 1 45 18 096 580 2 59 20 0 84 614 2 39 22 072 638 2 16
170. to check this within minutes after turning Q ON After 3 minutes LED blinks 6 times Even when NM Turn ON the power supply the inverter P C board or the outdoor electronic control Blinking P C board is normal LED blinks 6 times after 3 minutes Does the LED on the inverter P C board or the outdoor electronic control P C board No Replace the inverter P C board gt or the outdoor electronic control repeat 3 6 second OFF and 0 8 second quick blinking NS ORE P C board 2 2 Be careful of the residual Yes voltage of smoothing capacitor Turn OFF the power supply Remove the short circuit between Is there any error of the outdoor terminal block S2 and S3 Turn ON the power supply indoor outdoor connecting wire Replace the Is there amplitude of 10 to 20V DC such as the damage of the wire indoor outdoor between outdoor terminal block 52 No intermediate connection poor connecting wire A and S3 Confirmation of serial contact to the terminal block signal Turn OFF inverter controlled lighting equipment Turn OFF the power supply and then Yes turn ON it again Press TEST button twice ai Is there anv error of the Is there rated voltage between indoor outdoor connecting wire Replace the Reinstall the indoor terminal block 51 and S2 such as the damage of the wire indoor outdoor unit apart from Con
171. ture OC322G 48 PERFORMANCE DATA COOLING operation at Rated frequency SEZ KA50VA SUZ KA50VA CAPACITY 5 0 kW INPUT 1780 W SHF 0 75 OUTDOOR D B C INDOORINDOOR 25 27 D B C W B C SHF JINPUTI SHC 21 18 0 57 1495 5 40 3 08 0 57 21 20 0 45 1584 5 70 2 57 22 18 0 61 1495 5 40 3 29 22 20 0 49 1584 5 70 2 79 22 22 0 37 1647 6 00 2 22 23 18 0 65 1495 5 40 3 51 23 20 0 53 1584 5 70 3 02 23 22 0 41 1647 6 00 2 46 24 18 0 69 1495 5 40 3 73 24 20 0 57 1584 5 70 3 25 24 22 0 45 1647 6 00 12 70 24 24 0 33 1709 6 30 2 08 25 20 0 61 1584 5 70 3 48 25 22 0 49 1647 6 00 2 94 25 24 0 37 1709 6 30 2 33 26 18 0 77 1495 5 40 4 16 26 20 0 65 1584 5 70 3 71 26 22 0 53 1647 6 00 3 18 26 24 0 41 1709 6 30 2 58 26 26 0 29 1798 6 60 1 91 27 18 0 81 1495 5 40 4 37 27 20 0 69 1584 5 70 3 93 27 22 0 57 1647 6 00 3 42 27 24 0 45 1709 6 30 2 84 27 26 0 33 1798 6 60 2 18 28 18 0 85 1495 5 40 4 59 28 20 0 73 1584 5 70 4 16 28 22 0 61 1647 6 00 3 66 28 24 0 49 1709 6 30 3 09 28 26 0 37 1798 6 60 2 44 29 18 0 89 1495 5 40 4 81 29 20 0 77 1584 5 70 4 39 29 22 0 65 1647 6 00 3 90 29 24 0 53 1709 6 30 3 34 29 26 0
172. ulb temperature NOTE The above curves are for the heating operation without any frost 35 SUZ KA25VA H Correction of Cooling capacity SUZ KA25VA H Correction of Cooling total input 1 5 2 0 p o 51 0 8 S c 3 5 510 8 o 20 5 8 50 5 Q a 0 0 0 0 0 50 100 150 Hz 0 50 100 150 Hz The operational frequency of compressor The operational frequency of compressor SUZ KA35VA H Correction of Cooling capacity SUZ KA35VA H B of Cooling total input 1 0 0 5 100 150 Hz The GAL CN of compressor a o o a Capacity correction factors input correction factors o o 50 100 150 Hz The operational frequency of compressor SUZ KASOVA es of Cooling total input 1 0 0 5 100 150 Hz The E NS of compressor SUZ KASOVA Correction of Cooling capacitv o Capacity correction factors o a is correction factors o o 50 100 150 Hz The operational frequency of compressor SUZ KA60VA Correction of Cooling total input SUZ KA60VA Correction of Cooling capacity 1 5 5 p 8 e 8 51 0 1 0 8 9 o 20 5 80 5 4 o G gt a a G iz 0 0 0 0 0 50 100 150 Hz 0 50 100 150 Hz The operational frequencv of compressor The operational frequencv of compressor SUZ KA71VA Cooling total input SUZ KA71VA Correction of Cooling capacity 1 5 p 8 p 8 E 510 1 0 8 9 8 o
173. upply Y Is there rated voltage between outdoor termi Check the wirin nal block S1 and S2 No 9 Yes Y Press TEST button once Y Does the left lamp of OPERATION INDICA TOR lamp light up lt Confirmation of the power to the indoor unit gt No Yes Is there any miswiring poor PE mm contact or wire disconnection 2 Lis serial signal error indicated 6 minutes later7 No of the indoor outdoor connect Correct them Yes ing wire No lt Y A Y Turn OFF the power supply Check once more if the indoor outdoor connecting wire is miswiring ____ Short circuit outdoor terminal block 52 and S3 X1 3X1 Miswiring may damage indoor electronic control P C board A Turn OFF inverter controlled lighting equipment Turn OFF the power supply and then turn ON again Press EMERGENCY OPERATION Switch Reinstall either the unit or the light away from each other Attach a filter on remote control receiv ing section Is serial signal error indicated 6 minutes later of the indoor unit OC322G during the operation Be sure to confirm the wiring is correct before the operation starts 3X3 Be sure to check this within minutes after turning ON After 3 minutes LED blinks 6 times Even when the inverter P C board or the outdoor electronic control P C board is normal LED blinks 6 times after 3 minutes Y power supply Turn ON
174. voltage of smoothing capacitor 4 When removing the electronic control P C board hold the edge of the board with care NOT to apply stress on the components 5 When connecting or disconnecting the connectors hold the housing of the connector DO NOT pull the lead wires X Lead wire H 3 Troubleshooting procedure 1 First check if the OPERATION INDICATOR lamp is blinking on and off to indicate an abnormality To make sure check how many times the abnormality indication is blinking on and off before starting service work 2 Before servicing check that the connector and terminal are connected properly 3 If the electronic control P C board is supposed to be defective check the copper foil pattern for disconnection and the components for bursting and discoloration 4 When troubleshooting refer to 12 2 and 12 3 OC322G O gv ousing point 58 12 2 Failure mode recall function As this air conditioner has a function to memorize all the failures that had happened the latest failure detail can be recalled by following the procedures below Use this function when the check code is not displayed with wired remote controller or the remote controller at use is wireless type 12 2 1 Flow chart of the indoorloutdoor unit Operational procedure For wireless remote controller Setting up the failure mode recall function failure mode recall function While pressing both OPERATI
175. wire disconnection of the indoor outdoor Y No Is serial signal error indicated 6 minutes later 2 7 Make them correct Yes connecting wire No Y A Y Turn OFF the power supply Check once more if the indoor outdoor B connecting wire is not mis wiring Short circuit outdoor terminal block is S2 X1 Miswiring may damage indoor electronic control 1 As for indoor unit and S3 P C board during the operation xi Be sure to confirm the wiring is correct before the operation starts X3 Be sure to check this within 3 minutes after turning ON After 3 minutes LED blinks 6 times Even when Turn ON the power supply the inverter P C board or the outdoor electronic control P C board is normal LED blinks 6 times after 3 minutes Does the LED on the inverter P C board or the outdoor electronic control P C board No Replace the inverter P C board Inverter P C board repeat 3 6 second OFF and 0 8 second Lighted gt aoe control Mos C board Parts side quick blinking x3 rnt lighted 2 Be careful of the residual Yes voltage of smoothing capacitor LED O Turn OFF the power supply Remove the short circuit between Is there any error of the Blinking au pice 83 indoor outdoor connecting wire Replace the Is there amplitude of 10 to 20V DC such as
176. y CAPACITY 5 0 kW INPUT 1550 W OUTDOOR W B C 1045 1089 1144 5 10 INPUT INPUT Q INPUT OC322G 1364 1426 1504 1473 1535 1612 55 5 75 5 50 5 25 1566 1612 1690 SEZ KC25VA SUZ KA25VA H atRated frequency CAPACITY 3 0 kW INPUT 830 W OUTDOOR W B C 0 5 Q INPUT Q INPUT 730 764 805 SEZ KA35VA SUZ KA35VA H atRated frequency CAPACITY 4 0 kW INPUT 1100 W 789 822 863 OUTDOOR W B C 0 5 Q INPUT Q INPUT SEZ KASOVA SUZ KASOVA at Rated frequency CAPACITY 5 9 kW INPUT 1840 W 968 1012 1067 OUTDOOR W B C 1045 1089 1144 0 5 10 INPUT Q INPUT Q INPUT 1619 1693 1785 SEZ KA60VA SUZ KA60VA at Rated frequency CAPACITY 6 9 kW INPUT 2450 W 1748 1822 1914 6 79 6 49 6 20 OUTDOOR W B C 1858 1914 2006 0 5 10 INPUT Q INPUT Q INPUT 2156 2254 2377 SEZ KA71VA SUZ KA71VA at Rated frequency CAPACITY 8 1 kW INPUT 2360 W 2328 2426 2548 7 94 7 59 7 25 OUTDOOR W B C 2475 2548 2671 0 5 10 INPUT Q INPUT Q INPUT OC322G 2077
177. y before disassembling OPERATING PROCEDURE PHOTOS 1 Removing the cabinet Photo 1 1 Remove the screws of the service panel 2 Remove the screws of the top panel 3 Remove the screw of the valve cover 4 Remove the service panel 5 Remove the top panel 6 Remove the valve cover 7 Remove the screws of the cabinet 8 Remove the cabinet 9 Remove the screws of the back panel 10 Remove the back panel Screw of the top panel Screws of the cabinet Photo 3 Screws of the cabinet f th t rt Photo 2 ol ie Iotorssdppo Screw of the service panel Screws of the back panel Screws of the cabinet Set screws of the back panel OC322G 109 OPERATING PROCEDURE PHOTOS 2 Removing the inverter assembly inverter P C board and power board except for SUZ KA50VAR2 TH 1 Remove the top panel cabinet and service panel Refer to 1 2 Remove the back panel Refer to 1 3 Disconnect the following connectors lt Electronic control P C board gt CN931 and CN932 Fan motor CN795 LEV CN661 Discharge temperature thermistor defrost thermistor and outdoor heat exchanger temperature thermistor lt Noise filter board gt CN912 4 way valve 4 Remove the compressor connector 5 Remove the screws fixing the relay panel 6 Remove the inverter assembly 7 Disconnect all connectors and lead wires on the electronic control P C board 8 Remove t

technical & service manual - Aire Acondicionado Mitsubishi Electric

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technical &amp; service manual - Aire Acondicionado Mitsubishi Electric

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technical & service manual - Aire Acondicionado Mitsubishi Electric