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Kaisai KOU-12HDN1 Service Manual

Summary of KOU-12HDN1

  • Page 1

    Service manual 2010

  • Page 3

    Mlcac-utsm-2010-10 contents contents i part 1 general information ................................................................................................. 1 part 2 indoor units .............................................................................................................. 7 p...

  • Page 5: Part 1

    Mlcac-utsm-2010-10 general information general information 1 part 1 general information 1. Model names of indoor/outdoor units .......................... 2 2. External appearance ....................................................... 3 2.1 indoor units .................................................

  • Page 6

    Model names of indoor/outdoor units mlcac-utsm-2010-10 2 general information 1. Model names of indoor/outdoor units 1.1 indoor units r410a (capacity multiplied by 1000btu/h) type function 12 18 24 30 36 48 60 new four-way cassette cooling and heating √ √ four-way cassette cooling and heating √ √ √ √...

  • Page 7

    Mlcac-utsm-2010-10 external appearance general information 3 2. External appearance 2.1 indoor units duct ceiling & floor four-way cassette new compact four-way cassette console.

  • Page 8

    External appearance mlcac-utsm-2010-10 4 general information 2.2 outdoor units kou-12hdn1 koua-18hdn1-c0 koub-24hdn1 kou-30hdn1, koub-36hdn1-r kou-36hdn1, kou-48hdn1, koub-48hdn1-r koua-60hrdn1, koud-60hdn1-r.

  • Page 9

    Mlcac-utsm-2010-10 nomenclature general information 5 3. Nomenclature 3.1 indoor unit m u b - 18 h r d n1 refrigerant type n1 r410a dc inverter control mode r remote control function code c cooling only h cooling & heating capacity (¡ Á 1000btu/h) product series a first time design b second time des...

  • Page 10

    Features mlcac-utsm-2010-10 6 general information 4. Features 4.1 universal outdoor unit design indoor unit with the same capacity can match with the same outdoor unit. 4.2 high efficiency and energy saving. Thanks to the dc inverter technology and optimized piping system, the eer and cop of whole s...

  • Page 11: Part 2

    Mlcac-utsm-2010-10 indoor units indoor units 7 part 2 indoor units new four-way cassette type (compact) ........................... 8 four-way cassette type .................................................... 18 duct type ............................................................................ ...

  • Page 12

    New four-way cassette type (compact) mlcac-utsm-2010-10 8 new four-way cassette type (compact) new four-way cassette type (compact) 1. Features ............................................................................ 9 2. Specifications ..............................................................

  • Page 13

    Mlcac-utsm-2010-10 features new four-way cassette (compact) 9 1. Features (1) low operation noise ---streamline plate ensures quietness ---creates natural and comfortable environment (2) efficient cooling ---equal, fast and wide—range cooling (3) the adoption of the most advanced 3- dimensional scre...

  • Page 14

    Specifications mlcac-utsm-2010-10 10 new four-way cassette (compact) 2. Specifications model kca2-12hrdn1-q kca2-18hrdn1-q code 220042300070 220042400150 power supply v-ph-hz 220~240-1-50 220~240-1-50 cooling capacity btu/h 13680-12000-4800 19260-18000-6120 input w 1250-980-310 2070-1630-550 current...

  • Page 15

    Mlcac-utsm-2010-10 dimensions new four-way cassette (compact) 11 3. Dimensions 4. Service space.

  • Page 16

    Wiring diagrams mlcac-utsm-2010-10 12 new four-way cassette (compact) 5. Wiring diagrams kca2-12hrdn1-q kca2-18hrdn1-q.

  • Page 17

    Mlcac-utsm-2010-10 air velocity and temperature distributions new four-way cassette (compact) 13 6. Air velocity and temperature distributions airflow velocity temperature.

  • Page 18

    Electric characteristics mlcac-utsm-2010-10 14 new four-way cassette (compact) 7. Electric characteristics model indoor units power supply hz mfa min. Max. Mfa kca2-12hrdn1-q 50 220-240v 198v 254v 20 kca2-18hrdn1-q 50 220-240v 198v 254v 15 remark: mfa: max. Fuse amps. (a) 8. Sound levels 1.0m four-w...

  • Page 19

    Mlcac-utsm-2010-10 accessories new four-way cassette (compact) 15 9. Accessories name shape quantity 1. Drain joint (be provided in outdoor unit.) 1 2. Remote controller 1 3. Remote controller holder 1 4. Mounting screw(st2.9×10-c-h) 2 5. Alkaline dry batteries (am4) 2 6. Owner's manual 1 7. Install...

  • Page 20

    Field wiring mlcac-utsm-2010-10 16 new four-way cassette (compact) 11. Field wiring kca2 -12hrdn1-q kca2-18hrdn1-q.

  • Page 21

    Mlcac-utsm-2010-10 field wiring new four-way cassette (compact) 17 kca2-12hrdn1-q kca2-18hrdn1-q.

  • Page 22: Four-Way Cassette Type

    Four-way cassette type mlcac-utsm-2010-10 18 four-way cassette type four-way cassette type 1. Features .......................................................................... 19 2. Specifications ................................................................ 22 3. Dimensions ......................

  • Page 23

    Mlcac-utsm-2010-10 features four-way cassette type 19 1. Features (1) low operation noise —streamline plate ensures quietness —creates natural and comfortable environment (2) efficient cooling——equal, fast and wide range cooling (3) excellent performance. The optimal evaporator & sufficient airflow ...

  • Page 24

    Features mlcac-utsm-2010-10 20 four-way cassette type (8) different color panels for choose: white、gray、blue、black (9) swing angle of louver 1) add one more swing motor, one motor driving two louvers. Controlling the interspace of each part, minimizing the angle loss. 2) the swing angle of the first...

  • Page 25

    Mlcac-utsm-2010-10 features four-way cassette type 21 (15) reserve spaces for air side-outlet, it is available to connect duct pipe hence air supplying from the four sides to nearby small room.. (16) the connecting pipe and drop height is higher. Max. Pipe length up to 50m（refer to ①）, and max. Drop...

  • Page 26

    Specifications mlcac-utsm-2010-10 22 four-way cassette type 2. Specifications indoor unit model kcc-18hrdn1 kcc-24hrdn1 kcc-30hrdn1 code 220042400370 220042500500 220042600010 power supply v-ph-hz 220~240-1-50 220~240-1-50 220~240-1-50 outdoor unit model koua-18hdn1-c0 koub-24hdn1 kou-30hdn1 code 22...

  • Page 27

    Mlcac-utsm-2010-10 specifications four-way cassette type 23 indoor unit model kcc-36hrdn1 kcc-36hrdn1 code 220042700390 220042700390 power supply v-ph-hz 220~240-1-50 220~240-1-50 outdoor unit model kou-36hdn1 koub-36hdn1-r code 220075500651 220075500920 power supply v-ph-hz 220~240-1-50 380-415-3-5...

  • Page 28

    Specifications mlcac-utsm-2010-10 24 four-way cassette type indoor unit model kcc-48hrdn1 kcc-48hrdn1 kcc-60hrdn1 code 220042800480 220042800480 220042900010 power supply v-ph-hz 220~240-1-50 220~240-1-50 220~240-1-50 outdoor unit model kou-48hdn1 koub-48hdn1-r koud-60hdn1-r code 220075700540 220075...

  • Page 29

    Mlcac-utsm-2010-10 dimensions four-way cassette type 25 3. Dimensions unit: mm model(btu/h) a b c h 18000 230 Ф12.7 Ф6.4 >260 24000 230 Ф15.9 Ф9.5 >260 30000 300 Ф15.9 Ф9.5 >330 36000 300 Ф15.9 Ф9.5 >330 48000 300 Ф15.9 Ф9.5 >330 60000 300 Ф15.9 Ф9.5 >330

  • Page 30

    Service space mlcac-utsm-2010-10 26 four-way cassette type 4. Service space for 18-48k for 60k.

  • Page 31

    Mlcac-utsm-2010-10 wiring diagrams four-way cassette type 27 5. Wiring diagrams kcc-18hrdn1、kcc-24hrdn1 kcc-30hrdn1、kcc-36hrdn1、kcc-48hrdn1、kcc-60hrdn1.

  • Page 32

    Air velocity and temperature distributions mlcac-utsm-2010-10 28 four-way cassette type 6. Air velocity and temperature distributions airflow velocity electronic expansion valve oil separator c om p r es s or low pressure switch oil return capillary high pressure switch low pressure liquid accumulat...

  • Page 33

    Mlcac-utsm-2010-10 electric characteristics four-way cassette type 29 7. Electric characteristics model indoor unit power supply hz voltage min max mfa kcc-18hrdn1 50 220-240 198 254 15 kcc-24hrdn1 50 220-240 198 254 15 kcc-30hrdn1 50 220-240 198 254 15 kcc-36hrdn1 50 220-240 198 254 15 kcc-48hrdn1 ...

  • Page 34

    Accessories mlcac-utsm-2010-10 30 four-way cassette type 9. Accessories installation fittings name shape quantity installation paper board 1 tubing & fittings soundproof / insulation sheath 2 connecting pipe group 1 drainpipe fittings out-let pipe sheath 1 out-let pipe clasp 1 drain joint 1 seal rin...

  • Page 35

    Mlcac-utsm-2010-10 accessories four-way cassette type 31 mcc-60hrdn1 installation fittings name shape quantity 1. Expansible hook 4 2. Installation hook 4 3. Installation paper board 1 4. Bolt m6 4 tubing ＆ fittings 5. Soundproof / insulation sheath 2 drainpipe fittings 6. Out-let pipe 1 7. Out-let ...

  • Page 36

    The specification of power mlcac-utsm-2010-10 32 four-way cassette type 10. The specification of power.

  • Page 37

    Mlcac-utsm-2010-10 field wiring four-way cassette type 33 11. Field wiring wiring chart.

  • Page 38

    Field wiring mlcac-utsm-2010-10 34 four-way cassette type.

  • Page 39: Duct Type

    Mlcac-utsm-2010-10 duct type duct type 35 duct type 1. Features .......................................................................... 36 2. Specifications ................................................................ 37 3. Dimensions .............................................................

  • Page 40

    Features mlcac-utsm-2010-10 36 duct type 1. Features ● new structure design. ● built-in drainage pump (optical). ● two air intake ways: from below or rear (standard). ● wire controller is standard. ● three speeds indoor unit. ● fresh air inlet hole is reserved..

  • Page 41

    Mlcac-utsm-2010-10 specifications duct type 37 2. Specifications indoor unit model ktb-12hwdn1 ktb-18hwdn1 ktb-24hwdn1 code 220070100130 220070200110 220070300130 power supply v-ph-hz 220~240-1-50 220~240-1-50 220~240-1-50 outdoor unit model kou-12hdn1 koua-18hdn1-c0 koub-24hdn1 code 220075100071 22...

  • Page 42

    Specifications mlcac-utsm-2010-10 38 duct type indoor unit model ktb-30hwdn1 ktb-36hwdn1 ktb-36hwdn1 code 220070400040 220070500750 220070500750 power supply v-ph-hz 220~240-1-50 220~240-1-50 220~240-1-50 outdoor unit model kou-30hdn1 kou-36hdn1 koub-36hdn1-r code 220075401041 220075500651 220075500...

  • Page 43

    Mlcac-utsm-2010-10 specifications duct type 39 indoor unit model ktb-48hwdn1 ktb-48hwdn1 ktb-60hwdn1 code 220070700100 220070700100 220070800170 power supply v-ph-hz 220~240-1-50 220~240-1-50 220~240-1-50 outdoor unit model kou-48hdn1 koub-48hdn1-r koua-60hdn1-r code 220075700341 220075700690 220075...

  • Page 44

    Dimensions mlcac-utsm-2010-10 40 duct type 3. Dimensions capacity (kbtu) outline dimension(mm) air outlet o pening size air return opening size size of outline dimension mounted plug a b c d e f g h i j k l m 12/18 920 210 635 570 65 713 35 119 815 200 80 960 350 24 920 270 635 570 65 713 35 179 815...

  • Page 45

    Mlcac-utsm-2010-10 service space duct type 41 4. Service space ensure enough space required for installation and maintenance. All the indoor units reserve the hole to joint the fresh air pipe. The hole size as following:.

  • Page 46

    Wiring diagrams mlcac-utsm-2010-10 42 duct type 5. Wiring diagrams ktb-12hwdn1 ktb-18hwdn1 ktb1-24hwdn1 ktb-30hwdn1 ktb-36hwdn1 ktb-48hwdn1 ktb-60hwdn1 cn 1 c n13 cn2 cn 4 cn5 cn7 cn 6 cn1 7 cn 11 d m br own fm main board w hite xs1 xp1 blac k enc 2 ind oor powe r p 2 display board tr cn1 0 re d t2b...

  • Page 47

    Mlcac-utsm-2010-10 static pressure duct type 43 6. Static pressure ktb-12hwdn1 ktb-18hwdn1 800 700 400 300 low speed 10 20 30 40 50 60 70 80 90 pa air volume(m /h) 3 e x ter na l s tat ic p re s s ur e ( p a) high speed mid speed 500 600 900 0 super high speed 1200 mid speed high speed e x ter na l ...

  • Page 48

    Static pressure mlcac-utsm-2010-10 44 duct type ktb-36hwdn1 ktb-48hwdn1 2400 2200 1600 1400 low speed 10 20 30 40 50 60 70 80 90 1100 air volume(m /h) 3 e x ter na l s ta ti c p res s u re ( p a ) high speed mid speed 1200 1800 2000 super high speed pa 3100 2800 1900 1600 low speed 10 20 30 40 50 60...

  • Page 49

    Mlcac-utsm-2010-10 electric characteristics duct type 45 7. Electric characteristics model indoor unit power supply hz voltage min. Max. Mfa ktb-12hwdn1 50 220-240 207 253 15 ktb-18hwdn1 50 220-240 207 253 15 ktb1-24hwdn1 50 220-240 207 253 15 ktb-30hwdn1 50 220-240 207 253 15 ktb-36hwdn1 50 220-240...

  • Page 50

    Sound levels mlcac-utsm-2010-10 46 duct type 8. Sound levels suction discharge microphone 1.4m concealed duct type duct duct model noise level db(a) h m l ktb-12hwdn1 37 30 26 ktb-18hwdn1 44 36 33 ktb1-24hwdn1 45 43 41 ktb-30hwdn1 46 44 42 ktb-36hwdn1 46 44 42 ktb-48hwdn1 47 45 43 ktb-60hwdn1 47 45 ...

  • Page 51

    Mlcac-utsm-2010-10 accessories duct type 47 9. Accessories tubing & fittings name shape quantity soundproof / insulation sheath 2 binding tape 1 seal sponge 1 drainpipe fittings (for cooling & heating) drain joint 1 seal ring 1 remote controller ＆ its frame remote controller 1 frame 1 mounting screw...

  • Page 52

    The specification of power mlcac-utsm-2010-10 48 duct type 10. The specification of power.

  • Page 53

    Mlcac-utsm-2010-10 field wiring duct type 49 11. Field wiring.

  • Page 54

    Field wiring mlcac-utsm-2010-10 50 duct type air-conditioner link-circuit..

  • Page 55

    Mlcac-utsm-2010-10 field wiring duct type 51.

  • Page 56

    Field wiring mlcac-utsm-2010-10 52 duct type.

  • Page 57: Ceiling & Floor Type

    Mlcac-utsm-2010-10 ceiling & floor type ceiling & floor type 53 ceiling & floor type 1. Features .......................................................................... 54 2. Specifications ................................................................ 55 3. Dimensions ............................

  • Page 58

    Features mlcac-utsm-2010-10 54 ceiling & floor type 1. Features 1.1. New design, more modern and elegant appearance. 1.2. Convenient installation --the ceiling type can be easily installed into a corner of the ceiling even if the ceiling is very narrow --it is especially useful when installation of ...

  • Page 59

    Mlcac-utsm-2010-10 specifications ceiling & floor type 55 2. Specifications indoor unit model kub-12hrdn1 kub-18hrdn1 kub-24hrdn1 code 220044000060 220044100120 220044200240 power supply v-ph-hz 220~240-1-50 220~240-1-50 220~240-1-50 outdoor unit model kou-12hdn1 koua-18hdn1-c0 koub-24hdn1 code 2200...

  • Page 60

    Specifications mlcac-utsm-2010-10 56 ceiling & floor type indoor unit model kub-30hrdn1 kub-36hrdn1 kub-36hrdn1 code 220044300000 220044400310 220044400310 power supply v-ph-hz 220~240-1-50 220~240-1-50 220~240-1-50 outdoor unit model kou-30hdn1 kou-36hdn1 koub-36hdn1-r code 220075401041 22007550065...

  • Page 61

    Mlcac-utsm-2010-10 specifications ceiling & floor type 57 indoor unit model kub-48hrdn1 kub-48hrdn1 kub-60hrdn1 code 220044600230 220044600230 220044700210 power supply v-ph-hz 220~240-1-50 220~240-1-50 220~240-1-50 outdoor unit model kou-48hdn1 koub-48hdn1-r koua-60hrdn1 code 220075700341 220075700...

  • Page 62

    Dimensions mlcac-utsm-2010-10 58 ceiling & floor type 3. Dimensions a. Wall mounting installation b. Ceiling installation.

  • Page 63

    Mlcac-utsm-2010-10 dimensions ceiling & floor type 59 capacity(btu/h) a b c d e f g h 12000-24000btu/h 990 660 206 505 506 907 200 203 30000-36000btu/h 1280 660 206 795 506 1195 200 203 48000-60000btu/h 1670 680 244 1070 450 1542 200 240

  • Page 64

    Service space mlcac-utsm-2010-10 60 ceiling & floor type 4. Service space.

  • Page 65

    Mlcac-utsm-2010-10 wiring diagrams ceiling & floor type 61 5. Wiring diagrams kub-12hrdn1.

  • Page 66

    Wiring diagrams mlcac-utsm-2010-10 62 ceiling & floor type kub-18hrdn1、kub-24hrdn1 kub-30hrdn1、kub-36hrdn1、kub-48hrdn1、kub-60hrdn1.

  • Page 67

    Mlcac-utsm-2010-10 air velocity and temperature distributions ceiling & floor type 63 6. Air velocity and temperature distributions discharge angle 60° (ceiling) airflow velocity electronic expansion valve oil separator c om p res s or low pressure switch oil return capillary high pressure switch lo...

  • Page 68

    Air velocity and temperature distributions mlcac-utsm-2010-10 64 ceiling & floor type discharge angle 60°(floor) airflow velocity temperature.

  • Page 69

    Mlcac-utsm-2010-10 electric characteristics ceiling & floor type 65 7. Electric characteristics model indoor unit power supply hz voltage min max mfa mub-12hrdn1 50 220~240 198 254 20 mub-18hrdn1 50 220~240 198 254 15 mub-24hrdn1 50 220~240 198 254 15 mub-30hrdn1 50 220~240 198 254 15 mub-36hrdn1 50...

  • Page 70

    Sound levels mlcac-utsm-2010-10 66 ceiling & floor type 8. Sound levels ceiling floor model noise level db(a) h m l kub-12hrdn1 40 37 33 kub-18hrdn1 43 41 38 kub-24hrdn1 45 43 40 kub-30hrdn1 45 43 40 kub-36hrdn1 45 43 40 kub-48hrdn1 47 46 44 kub-60hrdn1 47 46 44.

  • Page 71

    Mlcac-utsm-2010-10 accessories ceiling & floor type 67 9. Accessories installation fittings name shape quantity 1.Hook 2 2.Hanging arm 2 remote controller & its holder 3. Remote controller 1 4. Remote controller holder 1 5. Mounting screw (st2.9×10-c-h) 2 6. Alkaline dry batteries (am4) 2 others 7. ...

  • Page 72

    The specification of power mlcac-utsm-2010-10 68 ceiling & floor type 10. The specification of power.

  • Page 73

    Mlcac-utsm-2010-10 field wiring ceiling & floor type 69 11. Field wiring.

  • Page 74

    Field wiring mlcac-utsm-2010-10 70 ceiling & floor type.

  • Page 75

    Mlcac-utsm-2010-10 field wiring ceiling & floor type 71.

  • Page 76: Console  Type

    Console type mlcac-utsm-2010-10 72 console type console type 1. Features .......................................................................... 73 2. Specifications ................................................................ 74 3. Dimensions ....................................................

  • Page 77

    Mlcac-utsm-2010-10 features console type 73 1. Features 1.1. Consumes up to 30% less energy than non-inverter units ——dc inverter compressor ——indoor fan motor adopts dc motor 1.2. Achieves set temperature more quickly ——air supplying from top and bottom or from top only ——air inlet from four direct...

  • Page 78

    Specifications mlcac-utsm-2010-10 74 console type 2. Specifications indoor unit model kfa-12hrdn1 kfa-18hrdn1 code 220044000070 220044100190 power supply v-ph-hz 220~240-1-50 220~240-1-50 outdoor unit model kou-12hdn1 koua-18hdn1-c0 code 220075100071 220075200340 power supply v-ph-hz 220~240-1-50 22...

  • Page 79

    Mlcac-utsm-2010-10 dimensions console type 75 3. Dimensions kfa-12hrdn1/ kfa-18hrdn1.

  • Page 80

    Service space mlcac-utsm-2010-10 76 console type 4. Service space.

  • Page 81

    Mlcac-utsm-2010-10 wiring diagrams console type 77 5. Wiring diagrams kfa-12hrdn1 kfa-18hrdn1 main control board l n room pipe white black cn7 y/g l n comm c n20 c n1 1 cn 5 cn1 cn2 cn1 4 cn1 5 c n1 01 switch board cn10 dis play board c n2 01 c n2 02 c n16 fan to wire controller x s1 -xs5 x p1 -xp5 ...

  • Page 82

    Air velocity and temperature distributions mlcac-utsm-2010-10 78 console type 6. Air velocity and temperature distributions discharge angle 60 airflow velocity temperature.

  • Page 83

    Mlcac-utsm-2010-10 electric characteristics console type 79 7. Electric characteristics model indoor unit power supply hz voltage min max mfa kfa-12hrdn1 50 220~240v 198v 254v 16 kfa-18hrdn1 50 220~240v 198v 254v 16 remark: mfa: max. Fuse amps. (a).

  • Page 84

    Sound levels mlcac-utsm-2010-10 80 console type 8. Sound levels model noise level db(a) highest higher h m l kfa-12hrdn1 38 35 33 31 28 kfa-18hrdn1 44 41 39 37 34.

  • Page 85

    Mlcac-utsm-2010-10 accessories console type 81 9. Accessories kfa-12hrdn1/ kfa-18hrdn1 name shape quantity installation fittings hook 2 remote controller & its frame remote controller 1 frame 1 mounting screw(st2.9×10-c-h) 2 alkaline dry batteries (am4) 2 others installation manual / 1 owner's manua...

  • Page 86

    The specification of power mlcac-utsm-2010-10 82 console type 10. The specification of power.

  • Page 87

    Mlcac-utsm-2010-10 field wiring console type 83 11. Field wiring.

  • Page 88

    Field wiring mlcac-utsm-2010-10 84 console type.

  • Page 90: Part 3

    Outdoor units mlcac-utsm-2010-10 86 outdoor units part 3 outdoor units 1. Specification ................................................................... 87 2. Dimensions .................................................................... 92 3. Service space .........................................

  • Page 91

    Mlcac-utsm-2010-10 specification outdoor unit 87 1. Specification outdoor model name kou-12hdn1 koua-18hdn1-c0 code 220075100071 220075200340 power supply 220~240v-1 ph-50hz 220~240v-1 ph-50hz max. Input consumption w 1500 2400 max. Current a 7.0 13.1 compressor model da108x1c-20fz3 c-6rvn93h0v type...

  • Page 92

    Specification mlcac-utsm-2010-10 88 outdoor units outdoor model name koub-24hdn1 kou-30hdn1 code 220075301070 220075401041 power supply 220~240v-1 ph-50hz 220~240v-1 ph-50hz max. Input consumption w 3250 4600 max. Current a 15.48 23 compressor model atl165sd-c9au tnb220flbm1 type rotary dc inverter ...

  • Page 93

    Mlcac-utsm-2010-10 specification outdoor units 89 outdoor model name kou-36hdn1 koub-36hdn1-r code 220075500651 220075500920 power supply 220~240v-1 ph-50hz 380v~3 ph-50hz max. Input consumption w 5500 5500 max. Current a 25 10 compressor model tnb306fpgm tnb306fpnm type rotary dc inverter rotary dc...

  • Page 94

    Specification mlcac-utsm-2010-10 90 outdoor units outdoor model name kou-48hdn1 koub-48hdn1-r code 220075700341 220075700690 power supply 220~240v-1 ph-50hz 380v~3 ph-50hz max. Input consumption w 6000 6000 max. Current a 28 12 compressor model tnb306fpgm tnb306fpnm type rotary dc inverter rotary dc...

  • Page 95

    Mlcac-utsm-2010-10 specification outdoor units 91 outdoor model name koua-60hrdn1 koud-60hdn1-r code 220075800161 220075801220 power supply 380v~-3 ph-50hz 380~415v-3 ph-50hz max. Input consumption w 7500 7200 max. Current a 14 14 compressor model anb42fbemt anb42fbemt type scroll dc inverter scroll...

  • Page 96

    Dimensions mlcac-utsm-2010-10 92 outdoor units 2. Dimensions unit: mm model a b c d e f h kou-12hdn1 761 530 290 315 270 279 593 koua-18hdn1-c0 842 560 335 360 312 324 695 koub-24hdn1 895 590 333 355 302 313 862 kou-30hdn1 990 624 366 396 340 354 966 kou-36hdn1 940 600 376 400 340 360 1245 koub-36hd...

  • Page 97

    Mlcac-utsm-2010-10 service space outdoor units 93 3. Service space.

  • Page 98

    Piping diagrams mlcac-utsm-2010-10 94 outdoor units 4. Piping diagrams kou-12hdn1 compressor outdoor unit 4-way valve condenser indoor unit capillary ass'y evaporator koua-18hdn1-c0、koub-24hdn1 t1 room te m p. Se ns or t2 eva po rato r te m p. Sen so r t4 ambient temp. Sensor t3 condenser temp. Sens...

  • Page 99

    Mlcac-utsm-2010-10 wiring diagrams outdoor units 95 5. Wiring diagrams kou-12hdn1.

  • Page 100

    Wiring diagrams mlcac-utsm-2010-10 96 outdoor units koua-18hdn1-c0 koub-24hdn1.

  • Page 101

    Mlcac-utsm-2010-10 wiring diagrams outdoor units 97 kou-30hdn1 kou-36hdn1、kou-48hdn1.

  • Page 102

    Wiring diagrams mlcac-utsm-2010-10 98 outdoor units koub-36hdn1-r koub-48hdn1-r、koua-60hrdn1.

  • Page 103

    Mlcac-utsm-2010-10 wiring diagrams outdoor units 99 koud-60hdn1-r.

  • Page 104

    Electric characteristics mlcac-utsm-2010-10 100 outdoor units 6. Electric characteristics model outdoor unit power supply hz voltage min. Max. Mfa kou-12hdn1 50 220-240 198 254 30 koua-18hdn1-c0 50 220-240 198 254 30 koub-24hdn1 50 220-240 198 254 30 kou-30hdn1 50 220-240 198 254 40 kou-36hdn1 50 22...

  • Page 105

    Mlcac-utsm-2010-10 operation limits outdoor units 101 7. Operation limits 12k 10 15 25 30 35 20 15 20 25 30 35 40 45 indoor temperature(℃ wb) o ut do or t em pe ra tu re( ℃ d b) std cooling 21 43 17 10 5 0 10 15 25 30 35 20 -10 -5 0 5 10 15 20 indoor temperature(℃ db) o ut do or t em pe ra ture( ℃ w...

  • Page 106

    Sound levels mlcac-utsm-2010-10 102 outdoor units 8. Sound levels model noise level db(a) h/l kou-12hdn1 48/44 koua-18hdn1-c0 51/46 koub-24hdn1 53/48 kou-30hdn1 57/50 kou-36hdn1 57/52 koub-36hdn1-r 55/50 kou-48hdn1 59/54 koub-48hdn1-r 59/54 koua-60hrdn1 59/54 koud-60hdn1-r 59/54.

  • Page 107

    Mlcac-utsm-2010-10 troubleshooting outdoor units 103 9. Troubleshooting 9.1 indoor unit malfunction 9.1.1 display board compact 4-way cassette ceiling & floor normal 4-way cassette duct.

  • Page 108

    Troubleshooting mlcac-utsm-2010-10 104 outdoor units 9.1.2 troubleshooting for normal 4-way cassette for compact 4-way cassette(12k).

  • Page 109

    Mlcac-utsm-2010-10 troubleshooting outdoor units 105 for compact 4-way cassette(18k)&ceiling & floor & high static duct unit for duct type.

  • Page 110

    Troubleshooting mlcac-utsm-2010-10 106 outdoor units.

  • Page 111

    Mlcac-utsm-2010-10 troubleshooting outdoor units 107 1. Operation lamp flashes operation lamp flashes at 5hz judge 1: indoor temp. Sensor is abnormal check whether the resistance of the evaporator temp. Sensor is correct according to annex 1 judge 2: room temp. Sensor is abnormal replace evaporator ...

  • Page 112

    Troubleshooting mlcac-utsm-2010-10 108 outdoor units 2. Timer lamp flashes 3. Alarm lamp slow-flash timer lamp flashes at 5hz judge: indoor/outdoor unit communication is abnormal refer to the outdoor unit led display e2 malfunction in the following part indoor alarm lamps flash at 1hz judge 1: conde...

  • Page 113

    Mlcac-utsm-2010-10 troubleshooting outdoor units 109 4. Alarm lamp quick-flash 5. Defrost lamp flashes alarm lamp flashes at 5hz judge: water level switch is abnormal. Select the cooling mode to make water pump work for a few minutes, then check whether the system can run normally replace indoor pcb...

  • Page 114

    Troubleshooting mlcac-utsm-2010-10 110 outdoor units 9.2 outdoor unit malfunction display malfunction or protection e0 eeprom malfunction e2 communication malfunction between indoor ic and outdoor ic e3 communication malfunction in outdoor ic and dsp e4 malfunction of outdoor temperature sensor e5 v...

  • Page 115

    Mlcac-utsm-2010-10 troubleshooting outdoor units 111 2. E2 malfunction e2 display communication malfunction between indoor ic and outdoor ic judge 3: check whether the signal wiring between the indoor and outdoor units is wrong polarity? Connect the signal wiring correctly yes no judge 4: check whet...

  • Page 116

    Troubleshooting mlcac-utsm-2010-10 112 outdoor units 3. E3 malfunction (for 18k & 24k & 30k) check whether the indicator lights led1 on the main board is flashing check whether the connecting wiring between the ipm module and the cn4 on the main board is broken off check whether the connecting wirin...

  • Page 117

    Mlcac-utsm-2010-10 troubleshooting outdoor units 113 4. E3 malfunction (for 36k & 48k & 60k) e3 display communication malfunction in outdoor ic and dsp check whether the indicator lights led1 or led2 on the main control board are flashing replace pcb yes install the ic-u3 chip of the pcb over again,...

  • Page 118

    Troubleshooting mlcac-utsm-2010-10 114 outdoor units 5. E4 malfunction e4 display check whether the wiring of the outdoor ambient temperature sensor (t4) is broken off replace pcb judge 1: outdoor condenser temp. Sensor (t3) is malfunction check whether the wiring of the condenser temp. Sensor is br...

  • Page 119

    Mlcac-utsm-2010-10 troubleshooting outdoor units 115 6. E5 malfunction 7. E6 malfunction (only for 30k, 36k & 48k with 1 phase) e5 display voltage protection of compressor check the voltage of outdoor unit power supply, whether the voltage between l(1) and n is about 172-265v no replace the power bo...

  • Page 120

    Troubleshooting mlcac-utsm-2010-10 116 outdoor units 8. P1 malfunction p1 display high pressure protection judge 1: whether the wiring between the high pressure switch and main control board is connected well or correctly judge 2: whether the high pressure switch is broken yes no connect it well met...

  • Page 121

    Mlcac-utsm-2010-10 troubleshooting outdoor units 117 9. P2 malfunction p2 display low pressure protection judge 1: the wiring between the low pressure switch and main control board is connected well or correctly judge 2: whether the low pressure switch is broken connect it well method: short connect...

  • Page 122

    Troubleshooting mlcac-utsm-2010-10 118 outdoor units 10. P3 malfunction p3 display current protection of compressor judge 1: check whether the input current of the power supply wire is more than 20a (for 36k & 48k with 1 phase, it is 30a) check whether the refrigerant system is ok yes judge 2: check...

  • Page 123

    Mlcac-utsm-2010-10 troubleshooting outdoor units 119 11. P4 malfunction whencompressor discharge temperature is higher than 115°c, the unit will stop, and unit runs again when compressor discharge temperature is lower than 90°c. P4 display discharge temperature protection of compressor check whether...

  • Page 124

    Troubleshooting mlcac-utsm-2010-10 120 outdoor units 12. P5 malfunction when condenser high temp. Is more than 65°c, the unit will stop, and unit runs again when outdoor pipe temp. Less than 52°c. P5 display high temperature protection of condenser check whether the condenser temperature is more tha...

  • Page 125

    Mlcac-utsm-2010-10 troubleshooting outdoor units 121 13. P6 malfunction (for single phase units) p6 display module protection check whether the voltage range of p-n on ipm module is normal? Dc277-356v for 18k/24k/30kbtu/h; dc277-410v for 36k/48kbtu/h no check whether the input power supply is correc...

  • Page 126

    Troubleshooting mlcac-utsm-2010-10 122 outdoor units 14. P6 malfunction (for three phases units) p6 display module protection check whether the voltage range of p-n on ipm module is normal? Dc 350-650v no check whether the input power supply is correct? 380-415v, 3n, 50hz no regulate it to correct, ...

  • Page 127

    Mlcac-utsm-2010-10 troubleshooting outdoor units 123 appendix indoor temp. And pipe temp. Sensor resistance value table (℃--k) ℃ k ohm ℃ k ohm ℃ k ohm ℃ k ohm -20 115.266 20 12.6431 60 2.35774 100 0.62973 -19 108.146 21 12.0561 61 2.27249 101 0.61148 -18 101.517 22 11.5000 62 2.19073 102 0.59386 -17...

  • Page 128: Part 4

    Installation mlcac-utsm-2010-10 124 installation part 4 installation 1.Precaution on installation ................................................ 125 2.Vacuum dry and leakage checking ............................... 126 3.Additional refrigerant charge ......................................... 128 4...

  • Page 129

    Mlcac-utsm-2010-10 precaution on installation installation 125 1. Precaution on installation 1). Measure the necessary length of the connecting pipe, and make it by the following way. A. Connect the indoor unit at first, then the outdoor unit. Bend the tubing in proper way. Do not harm them. Special...

  • Page 130

    Vacuum dry and leakage checking mlcac-utsm-2010-10 126 installation 2. Vacuum dry and leakage checking 1) vacuum dry: use vacuum pump to change the moisture (liquid) into steam (gas) in the pipe and discharge it out of the pipe to make the pipe dry. Under one atmospheric pressure, the boiling point ...

  • Page 131

    Mlcac-utsm-2010-10 vacuum dry and leakage checking installation 127 ②. Special vacuum dry procedure  this vacuum dry method is used in the following conditions:  there’s moisture when flushing the refrigerant pipe.  rainwater may enter into the pipe.  vacuum dry for the first time ······ 2h pump...

  • Page 132

    Additional refrigerant charge mlcac-utsm-2010-10 128 installation 3. Additional refrigerant charge caution a) refrigerant cannot be charged until field wiring has been completed. B) refrigerant may only be charged after performing the leak test and the vacuum pumping. C) when charging a system, care...

  • Page 133

    Mlcac-utsm-2010-10 water drainage installation 129 4. Water drainage 4.1 gradient and supporting 1). Keep the drainpipe sloping downwards at a gradient of at least 1/50. Keep the drainpipe as short as possible and eliminate the air bubble. 2). The horizontal drainpipe should be short. When the pipe ...

  • Page 134

    Water drainage mlcac-utsm-2010-10 130 installation for four-way cassette 4.4 convergent drainage 1). The number of indoor units should be as small as possible to prevent the traverse main pipe overlong. 2). Indoor unit with drain pump and indoor unit without drain pump should be in different drainag...

  • Page 135

    Mlcac-utsm-2010-10 water drainage installation 131 ③ stop the air conditioner running, turn off the power, and put back the cover.  stop the air conditioner. After 3 minutes, check if it has abnormity. If the collocation of drainpipes is illogical, the water will flow back overfull, which will caus...

  • Page 136

    Insulation work mlcac-utsm-2010-10 132 installation 5. Insulation work 5.1 insulation material and thickness 1). Insulation material insulation material should adopt the material which is able to endure the pipe’s temperature: no less than 70 ℃ in the high -pressure side, no less than 120 ℃ in the l...

  • Page 137

    Mlcac-utsm-2010-10 insulation work installation 133 for construction convenience, before laying pipes, use insulation material to insulate the pipes to be deal with, at the same time, at two ends of the pipe, remain some length not to be insulated, in order to be welded and check the leakage after l...

  • Page 138

    Test operation mlcac-utsm-2010-10 134 installation 7. Test operation (1) the test operation must be carried out after the entire installation has been completed. (2) please confirm the following points before the test operation.  the indoor unit and outdoor unit are installed properly.  tubing and...

  • Page 139: Part 5

    Mlcac-utsm-2010-10 control control 135 part 5 control 1. Wireless remote controller ........................................... 136.

  • Page 140

    Wireless remote controller mlcac-utsm-2010-10 136 control 1. Wireless remote controller 1.1 r11-hg/e i/o button temperature button each time you push button, a mode is selected in a sequence that goes from auto, cool, dry, heat (cooling only type without), fan only and back to auto. The push the but...

  • Page 141

    Mlcac-utsm-2010-10 wireless remote controller control 137 1.2 r05/bge the r05/bge wireless remote controller is for four-way cassette type and the ceiling& floor type. 1 mo de s etting 5 on/of f 7 hor iz swin g 9 tim e settin g 6 air direction setting 8 vert. Swing 11 ti me off 10 t ime on ad jus t ...

  • Page 142

    Wireless remote controller mlcac-utsm-2010-10 138 control buttons and functions 1. Mode: once pressing, running mode will be selected in the following sequence: auto cool dry heat fan note: no heating mode for cool only type unit. 2. Fan speed: fan speed will be selected in following sequence once p...

  • Page 143

    Mlcac-utsm-2010-10 wireless remote controller control 139 1.3 r51/ce the r51/ce wireless remote controller is only for mca1-18cr. Remote controller specifications model r51/ce rated voltage 3.0v lowest voltage of cpu emitting signal 2.0v reaching distance 8m (when using 3.0 voltage, it can get 11m) ...

  • Page 144

    Wireless remote controller mlcac-utsm-2010-10 140 control 10. Fan speed button: this button is used for setting fan speed in the sequence that goes from auto, low, med to high, and then back to auto. 11. Temp up button: push this button to increase the indoor temperature setting or to adjust the tim...