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Kaisai KCD-18HRFN1-QRC4 Service Manual

Summary of KCD-18HRFN1-QRC4

  • Page 1

    Contents i energy related products super dc inverter series service manual 2013 lfis-b-1309.

  • Page 3

    Contents contents i part 1 general information .................................................................................................... 1 part 2 indoor units ................................................................................................................. 6 part 3 outdoor...

  • Page 5: Part 1

    General information general information 1 part 1 general information 1. Model lists ................................................................................................ 2 2. External appearance ................................................................................ 3 2.1 indoor ...

  • Page 6

    Model lists 2 general information 1. Model lists 1.1 indoor units r410a (capacity multiplied by 1000btu/h) type function 12 16 18 24 30 36 super slim cassette cooling and heating ● ● ● ● duct cooling and heating ● ● ● ● ● ceiling-floor cooling and heating ● ● ● ● new four-way cassette (compact) cool...

  • Page 7

    External appearance general information 3 2. External appearance 2.1 indoor units super slim cassette duct ceiling-floor compact four-way cassette console 2.2 outdoor units single fan outdoor unit double fan outdoor unit.

  • Page 8

    Nomenclature 4 general information 3. Nomenclature 3.1 indoor unit m u b t- 36 h r d n1- q rc4 energy efficiency code power supply q 220~240v,1n, 50hz r 380~420v, 3n, 50hz n 220~230v, 1n, 60hz d 220v~, 3n, 60hz c 380~420v,3n,60hz refrigerant n1 r410a -- r22 d dc inverter -- on-off f full dc control ...

  • Page 9

    Features general information 5 4. Features 4.1. To meet europe a level, actual eer/cop of new product with bldc motors of indoor & outdoor unit and dc compressor will be higher than 3.4. 4.2. Low ambient kit is standard for outdoor units 4.3. Network control function is standard for the indoor units...

  • Page 10: Part 2

    Indoor units 6 indoor units part 2 indoor units super slim cassette type ................................................... 7 duct type ............................................................................ 20 ceiling & floor type .......................................................... 35 ...

  • Page 11: Super  Slim Cassette Type

    Super slim cassette type indoor units 7 super slim cassette type 1. Features .............................................................................. 8 2. Dimensions ....................................................................... 12 3. Service space .......................................

  • Page 12

    Features 8 indoor units 1. Features 1.1 overview  compact design, super slim body size, less space requiring in installation  each louver can be separately controlled, more comfort air blowing is possible.  auto-lifting panel design, more convenient to clean and maintain the filter. (optional) ol...

  • Page 13

    Features indoor units 9 1.3 optional ionizer generator  ionizer generator is optional to get refreshing air to your room.  ionizer can be switched on or off by remote controller. When pressing the clean air button on the remote controller, ionizer will work and the indicator light on display board...

  • Page 14

    Features 10 indoor units 1.4 external air duct design  reserve external air duct, more flexible for the air supply. 1.5 built-in draining pump  due to the improvement of structure, more convenient to repair or replace the draining pump.  built-in draining pump to make sure condensed water drain o...

  • Page 15

    Features indoor units 11 1.6 terminals for alarm lamp and long-distance on-off controller connection are standard  reserve terminals for the connection of alarm lamp and long-distance on-off controller, more human control. 1.7 optional touch screen wired controller  touch screen wired controller i...

  • Page 16

    Dimensions 12 indoor units 2. Dimensions model a h kcd-18hrfn1-qrc4 kcd-18hrfn1-qrc8 205 >235 kcd-24hrfn1-qrc4 205 >235 kcd-24hrfn1-qrc8 245 >275 kcd-30hrfn1-qrc8 245 >275 kcd-36hrfn1-qrc4 kcd-36hrfn1-qrc8 245 >275.

  • Page 17

    Service space indoor units 13 3. Service space >1000mm >1000mm >1 00 0m m >10 00m m.

  • Page 18

    Wiring diagrams 14 indoor units 4. Wiring diagrams kcd-18hrfn1-qrc4 kcd-18hrfn1-qrc8 kcd-24hrfn1-qrc4 kcd-24hrfn1-qrc8 kcd-30hrfn1-qrc8 kcd-36hrfn1-qrc4 kcd-36hrfn1-qrc8.

  • Page 19

    Electric characteristics indoor units 15 5. Electric characteristics model indoor unit power supply hz voltage min max mfa kcd-18hrfn1-qrc4 50 220-240 198 254 10 kcd-18hrfn1-qrc8 50 220-240 198 254 10 kcd-24hrfn1-qrc4 50 220-240 198 254 10 kcd-24hrfn1-qrc8 50 220-240 198 254 10 kcd-30hrfn1-qrc8 50 2...

  • Page 20

    Sound levels 16 indoor units 6. Sound levels 1.4m microphone model noise power db(a) noise level db(a) h m l kcd-18hrfn1-qrc4 58 49 44 40 kcd-18hrfn1-qrc8 59 49 44 39 kcd-24hrfn1-qrc4 59 50 45 42 kcd-24hrfn1-qrc8 62 50 47 42 kcd-30hrfn1-qrc8 62 52 49 46 kcd-36hrfn1-qrc4 65 53 49 46 kcd-36hrfn1-qrc8 ...

  • Page 21

    Accessories indoor units 17 7. Accessories name shape quantity installation fittings installation paper board 1 tubing & fittings soundproof / insulation sheath 1 drainpipe fittings out-let pipe sheath 1 out-let pipe clasp 1 drain joint 1 seal ring 1 remote controller & its frame(the product you hav...

  • Page 22

    The specification of power 18 indoor units 8. The specification of power model 18000-24000btu/h 30000 btu/h 36000 btu/h 36000 btu/h indoor unit power phase 1-phase 1-phase 1-phase 1-phase frequency and voltage 220-240v, 50hz 220-240v, 50hz 220-240v, 50hz 220-240v, 50hz power wiring (mm 2 ) 3×1.0 3×1...

  • Page 23

    Field wiring indoor units 19 9. Field wiring.

  • Page 24: Duct Type

    Duct type 20 indoor units duct type 1. Features ............................................................................ 21 2. Dimensions ....................................................................... 24 3. Service space .....................................................................

  • Page 25

    Features indoor units 21 1. Features 1.1 installation accessories: (optional)  front board, canvas air passage, filter, panel, for easy installation 1.2 easy installation: two air inlet styles (bottom side or rear side)  air inlet from rear is standard for all capacity; air inlet from bottom is op...

  • Page 26

    Features 22 indoor units  replace the motor or centrifugal fan remove the ventilated panel firstly. Remove a half of blower housing and take out the motor with centrifugal fan. Directly remove two bolts, and then replace the motor or centrifugal fan easily. 1.5 reserved remote on-off and central co...

  • Page 27

    Features indoor units 23 1.7 built-in display board  the standard indoor unit can be controlled by wired controller.  there is a display board with a receiver in the e-box. Move out the display, and fix it in other place, even in the distance of 10m. The unit will realized remoter control.  the w...

  • Page 28

    Dimensions 24 indoor units 2. Dimensions h g e f a b d c l m capacity (kbtu) outline dimension(mm) air outlet opening size air return opening size size of outline dimension mounted plug a b c d e f g h i j k l m 12 700 210 635 570 65 493 35 119 595 200 80 740 350 18/24 920 270 635 570 65 713 35 179 ...

  • Page 29

    Service space indoor units 25 3. 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 30

    Wiring diagrams 26 indoor units 4. Wiring diagrams ktbu-12hwfn1-qrc8 ktb-18hwfn1-qrc4 ktb-18hwfn1-qrc8(a) ktb-24hwfn1-qrc8 ktb-30hwfn1-qrc8 ktb-36hwfn1-qrc4 ktb-36hwfn1-qrc8(a).

  • Page 31

    Wiring diagrams indoor units 27 ktb-24hwdn1-qrc4.

  • Page 32

    Static pressure 28 indoor units 5. Static pressure 12,000btu/h 18,000btu/h super high speed 0 900 600 500 mid speed high speed e x te rna l s tat ic pre s s u re (p a) 3 air volume(m /h) pa 90 80 70 60 50 40 30 20 10 low speed 300 400 700 800 super high speed 500 400 300 200 low speed 10 20 30 40 50...

  • Page 33

    Static pressure indoor units 29 36,000btu/h 2400 2200 1600 1400 low speed 10 20 30 40 50 60 70 80 90 1100 air volume(m /h) 3 e x ter n a l s tat ic p re s s u re (p a) high speed mid speed 1200 1800 2000 super high speed pa.

  • Page 34

    Electric characteristics 30 indoor units 6. Electric characteristics model indoor unit power supply hz voltage min. Max. Mfa ktbu-12hwfn1-qrc8 50 220-240 198 254 16 ktb-18hwfn1-qrc4 50 220-240 198 254 10 ktb-18hwfn1-qrc8(a) 50 220-240 198 254 10 ktb-24hwdn1-qrc4 50 220-240 198 254 10 ktb-24hwfn1-qrc...

  • Page 35

    Sound levels indoor units 31 7. Sound levels suction discharge microphone 1.4m concealed duct type duct duct model sound power db(a) noise level db(a) h m l ktbu-12hwfn1-qrc8 59 41 38 36 ktb-18hwfn1-qrc4 59 46 43 41 ktb-18hwfn1-qrc8(a) 59 45 42 40 ktb-24hwdn1-qrc4 58 43 38 32 ktb-24hwfn1-qrc8 63 46 ...

  • Page 36

    Accessories 32 indoor units 8. Accessories name shape quantity tubing & fittings soundproof / insulation sheath 2 binding tape 1 seal sponge 1 drainpipe fittings (for cooling & heating) drain joint 1 seal ring 1 wired controller & its frame wired controller 1 others owner ， s manual 1 installation m...

  • Page 37

    The specification of power indoor units 33 9. The specification of power model 12000 btu/h 18000-24000bt u/h 30000 btu/h 36000 btu/h 36000 btu/h indoor unit power phase 1-phase 1-phase 1-phase 1-phase frequency and voltage 220-240v, 50hz 220-240v, 50hz 220-240v, 50hz 220-240v, 50hz power wiring (mm ...

  • Page 38

    Field wiring 34 indoor units 10. Field wiring ktbu-12hwfn1-qrc8 ktb-18hwfn1-qrc4 、 ktb-18hwfn1-qrc8(a) 、 ktb-24hwdn1-qrc4 、 ktb-24hwfn1-qrc8 、 ktb-30hwfn1-qrc8、ktb-36hwfn1-qrc4、ktb-36hwfn1-qrc8(a).

  • Page 39: Ceiling & Floor Type

    Ceiling & floor type indoor units 35 ceiling & floor type 1. Features ...................................................................... 36 2. Dimensions ................................................................. 37 3. Service space ...........................................................

  • Page 40

    Features 36 indoor units 1. Features 1.1. New design, more modern and elegant appearance. 1.2. 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 an air conditioner in ...

  • Page 41

    Dimensions indoor units 37 2. Dimensions capacity (btu/h) a b c d e 18k, 24k 1068 675 235 983 220 30k, 36k 1285 675 235 1200 220

  • Page 42

    Service space 38 indoor units 3. Service space.

  • Page 43

    Wiring diagrams indoor units 39 4. Wiring diagrams kue-18hrfn1-qrc8 kue-24hrfn1-qrc8 kue-30hrfn1-qrc8 kue-36hrfn1-qrc4 kue-18hrdn1-qrc4 kue-24hrdn1-qrc4.

  • Page 44

    Wiring diagrams 40 indoor units kue-36hrfn1-qrc8(a).

  • Page 45

    Electric characteristics indoor units 41 5. Electric characteristics model indoor units power supply hz voltage min. Max. Mfa kue-18hrdn1-qrc4 50 220-240 198 254 10 kue-18hrfn1-qrc8 50 220-240 198 254 10 kue-24hrdn1-qrc4 50 220-240 198 254 10 kue-24hrfn1-qrc8 50 220-240 198 254 10 kue-30hrfn1-qrc8 5...

  • Page 46

    Accessories 42 indoor units 7. Accessories name shape quantity remote controller & its holder(the product you have might not be provided the following accessories) 1. Remote controller 1 2. Remote controller holder 1 3. Mounting screw (st2.9×10-c-h) 2 4. Alkaline dry batteries (am4) 2 others 5. Owne...

  • Page 47

    Indoor units 43 9. Field wiring.

  • Page 48

    44 indoor units new four-way cassette type (compact) 1. Features ............................................................................................... 45 2. Dimensions .......................................................................................... 46 3. Service space ..............

  • Page 49

    Features indoor units 45 1. Features 1.1 new panel  360°surrounding air outlet design, affords comfortable feeling 1.2 compact design  the body size is 570×260×570mm, it’s just smaller than the ceiling board, so it’s very easy for installation and will not damage the decoration. The panel size is ...

  • Page 50

    Dimensions 46 indoor units 2. Dimensions.

  • Page 51

    Service space indoor units 47 3. Service space.

  • Page 52

    Wiring diagrams 48 indoor units 4. Wiring diagrams kca2u-12hrfn1-qrc8 kca2-18hrfn1-qrc8.

  • Page 53

    Air velocity and temperature distributions(reference data) indoor units 49 5. Air velocity and temperature distribution s(reference data) airflow velocity temperature.

  • Page 54

    Electric characteristics 50 indoor units 6. Electric characteristics model indoor units power supply hz voltage min. Max. Mfa kca2u-12hrfn1-qrc8 50 220-240 198 254 20 kca2-18hrfn1-qrc8 50 220-240 198 254 20 notes: mfa: max. Fuse amps. (a) 7. Sound levels 1.4m microphone model noise power db(a) noise...

  • Page 55

    Accessories indoor units 51 8. Accessories name shape quantity installation fittings installation paper board 1 tubing & fittings soundproof / insulation sheath 1 drainpipe fittings out-let pipe sheath 1 out-let pipe clasp 1 drain joint 1 seal ring 1 remote controller & its frame(the product you hav...

  • Page 56

    52 indoor units 10. Field wiring kca2u-12hrfn1-qrc8 kca2-18hrfn1-qrc8.

  • Page 57: Console  Type

    Console type console type 53 console type 1. Features ............................................................................................... 55 2. Dimensions .......................................................................................... 57 3. Service space .........................

  • Page 59

    Features console type 55 1. Features 1.1. Modern and elegant appearance  the simple and stylish designs can nicely harmonies with your living space. 1.2. Four panels optional 1.3. Two air-outlet ways cooling mode quick cooling to maintain room temp  air outlet from top and bottom to make quick coo...

  • Page 60

    Console type 56 console type 1.4. Four air inlets 1.5. Low noise  dc indoor fan motor, which has five speeds.  low noise and energy saving.  advanced centrifugal fan technology makes a fast airflow and reduces the indoor noise lower to 28db. 1.6. Golden fin is optional. 1.7. Active carbon filter ...

  • Page 61

    Dimensions console type 57 2. Dimensions kfau-12hrfn1-qrc8、kfa-16hrfn1-qrc8.

  • Page 62

    Service space 58 console type 3. Service space.

  • Page 63

    Wiring diagrams console type 59 4. Wiring diagrams kfau-12hrfn1-qrc8 kfa-16hrfn1-qrc8.

  • Page 64

    Air velocity and temperature distributions(reference data) 60 console type 5. Air velocity and temperature distributions(reference data) discharge angle 60 airflow velocity temperature.

  • Page 65

    Electric characteristics console type 61 6. Electric characteristics model indoor units power supply hz voltage min. Max. Mfa kfau-12hrfn1-qrc8 50 220-240 198 254 16 kfa-16hrfn1-qrc8 50 220-240 198 254 16.

  • Page 66

    Sound levels 62 console type 7. Sound levels 1.5m 1m microphone model noise power db(a) noise level db(a) higher h m l kfau-12hrfn1-qrc8 57 47 44 40 37 kfa-16hrfn1-qrc8 59 48 47 44 40

  • Page 67

    Accessories console type 63 8. Accessories 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 manual / 1 9. The specification of power model 12...

  • Page 68

    Field wiring 64 console type 10. Field wiring kfau-12hrfn1-qrc8 kfa-16hrfn1-qrc8.

  • Page 69: Part 3

    Outdoor units outdoor units 65 part 3 outdoor units 1. Dimensions ................................................................................................. 66 2. Service space ............................................................................................. 68 3. Piping diagrams ...

  • Page 70

    Dimensions 66 outdoor units 1. Dimensions model unit：mm a b c d e f h kou-12hfn1-qrc8 760 530 290 315 270 285 590 kou-18hfn1-qrc4 845 560 335 360 312 320 700 kou-18hfn1-qrc8 845 560 335 360 312 320 700 kou-24hfn1-qrc4 900 590 333 355 302 315 860 kou-24hfn1-qrc8 900 590 333 355 302 315 860 kou-30hfn1...

  • Page 71

    Dimensions outdoor units 67 model unit：mm a b c d e f h kou-36hfn1-qrc8(5a0) 938 633.5 404 448 370 392 1369 kou-36hfn1-rrc8(5a0) 938 633.5 404 448 370 392 1369.

  • Page 72

    Service space 68 outdoor units 2. Service space more than 60cm more than 30cm more than 60cm more than 200cm air inlet air inlet more than 30cm air outlet (wall or obstacle) maintain channel.

  • Page 73

    Piping diagrams outdoor units 69 3. Piping diagrams kou-12hfn1-qrc8 kou-18hfn1-qrc4 kou-18hfn1-qrc8 kou-24hfn1-qrc4 kou-24hfn1-qrc8 kou-30hfn1-qrc8 liquid side gas side heat exchange (evaporator) heat exchange (condenser) compressor 2-way valve 3-way valve 4-way valve cooling heating t2b evaporator ...

  • Page 74

    Wiring diagrams 70 outdoor units 4. Wiring diagrams kou-12hfn1-qrc8.

  • Page 75

    Wiring diagrams outdoor units 71 kou-18hfn1-qrc4 mou-18hfn1-qrc8 kou-24hfn1-qrc4 kou-24hfn1-qrc8 kou-30hfn1-qrc8 kou-36hfn1-qrc4 kou-36hfn1-qrc8(520).

  • Page 76

    Wiring diagrams 72 outdoor units kou-36hfn1-rrc4 kou-36hfn1-rrc8(520) kou-36hfn1-qrc8(5a0).

  • Page 77

    Wiring diagrams outdoor units 73 kou-36hfn1-rrc8(5a0).

  • Page 78

    Electric characteristics 74 outdoor units 5. Electric characteristics model outdoor unit hz voltage min. Max. Kou-12hfn1-qrc8 50 220-240v 198v 254v kou-18hfn1-qrc4 50 220-240v 198v 254v kou-18hfn1-qrc8 50 220-240v 198v 254v kou-24hfn1-qrc4 50 220-240v 198v 254v kou-24hfn1-qrc8 50 220-240v 198v 254v ...

  • Page 79

    Operation limits outdoor units 75 6. Operation limits temperature mode cooling operation heating operation room temperature ≥17℃ ≤30℃ outdoor temperature -15℃～50℃ -15℃～24℃ caution: 1. If the air conditioner is used beyond the above conditions, certain safety protection features may come into operati...

  • Page 80

    Sound levels 76 outdoor units 7. Sound levels h 1.0m outdoor unit microphone note: h= 0.5 × height of outdoor unit model noise power db(a) noise level db(a) kou-12hfn1-qrc8 61 58 kou-18hfn1-qrc4 65 61 kou-18hfn1-qrc8 65 60 kou-24hfn1-qrc4 67 64 kou-24hfn1-qrc8 69 60 kou-30hfn1-qrc8 70 61 kou-36hfn1-...

  • Page 81: Part 4

    Installation installation 77 part 4 installation 1. Installation procedure .................................................... 78 2. Location selection .......................................................... 79 3. Indoor unit installation ................................................... 80 4....

  • Page 82

    Installation procedure 78 installation 1. Installation procedure vacuum drying and leakage checking additional refrigerant charge insulation the joint part of refrigerant pipe wiring connection and electric safety checking test operation refrigerant pipe installation and insulation drainage pipe ins...

  • Page 83

    Location selection installation 79 2. Location selection 2.1 indoor unit location selection  the place shall easily support the indoor unit’s weight.  the place can ensure the indoor unit installation and inspection.  the place can ensure the indoor unit horizontally installed.  the place shall ...

  • Page 84

    Indoor unit installation 80 installation 3. Indoor unit installation 3.1 super slim cassette indoor unit installation 3.1.1 service space for indoor unit model a h remark 18-30 205 >235 r410a and r22 cooling / cooling & heating 36 245 >275 r410a and r22 cooling / cooling & heating 3.1.2 bolt pitch 3...

  • Page 85

    Indoor unit installation installation 81 drill four holes of Ø12mm, 45~50mm deep at the selected positions on the ceiling. Then embed the expansible hooks (fittings). 3.1.4 install the main body make the 4 suspender through the 4 hanger of the main body to suspend it. Adjust the hexangular nuts on t...

  • Page 86

    Indoor unit installation 82 installation 3.1.5 install the panel remove the grille remove the 4 corner covers. Hang the panel to the hooks on the mainbody. If the panel is with auto-lift grille, please watch the ropes lifing the grille, do not make the ropes enwinded or blocked..

  • Page 87

    Indoor unit installation installation 83 tighten the screws under the panel hooks till the panel closely stick on the ceiling to avoid condensate water. Hang the air-in grill to the panel, then connect the lead terminator of the swing motor and that of the control box with corresponding terminators ...

  • Page 88

    Indoor unit installation 84 installation 3.2 a5 duct indoor unit installation 3.2.1 service space for indoor unit 3.2.2 bolt pitch capacity(kbtu) size of outline dimension mounted plug l m 12 740 350 18/24 960 350 30/36 1180 490 3.2.3 install the pendant bolt select the position of installation hook...

  • Page 89

    Indoor unit installation installation 85 3.2.4 install the main body make the 4 suspender through the 4 hanger of the main body to suspend it. Adjust the hexangular nuts on the four installation hooks evenly, to ensure the balance of the body. Use a leveling instrument to make sure the levelness of ...

  • Page 90

    Indoor unit installation 86 installation 3.2.7 change the air inlet direction ① take off ventilation panel and flange, cut off the staples at side rail. ② stick the attached seal sponge as per the indicating place in the following fig, and then change the mounting positions of air return panel and a...

  • Page 91

    Indoor unit installation installation 87 3.3 ceiling & floor indoor unit installation 3.3.1 service space for indoor unit 3.3.2 bolt pitch ① ceiling installation capacity (btu/h) d e 18k, 24k 983 220 36k 1200 220 ② wall-mounted installation 3.3.3 install the pendant bolt.

  • Page 92

    Indoor unit installation 88 installation ① ceiling installation select the position of installation hooks according to the hook holes positions showed in upper picture. Drill four holes of Ø12mm, 45~50mm deep at the selected positions on the ceiling. Then embed the expansible hooks (fittings). ② wal...

  • Page 93

    Indoor unit installation installation 89 put the side panels and grilles back. ② wall-mounted installation hang the indoor unit by insert the tapping screws into the hanging arms on the main unit. (the bottom of body can touch with floor or suspended, but the body must install vertically.).

  • Page 94

    Indoor unit installation 90 installation 3.4 compact cassette indoor unit installation 3.4.1 service space for indoor unit 3.4.2 bolt pitch 3.4.3 install the pendant bolt select the position of installation hooks according to the hook holes positions showed in upper picture. Drill four holes of Ø12m...

  • Page 95

    Indoor unit installation installation 91 face the concave side of the installation hooks toward the expansible hooks. Determine the length of the installation hooks from the height of ceiling, then cut off the unnecessary part. If the ceiling is extremely high, please determine the length of the ins...

  • Page 96

    Indoor unit installation 92 installation hang the panel to the hooks on the mainbody. Tighten the screws under the panel hooks till the panel closely stick on the ceiling to avoid condensate water. Hang the air-in grill to the panel, then connect the lead terminator of the swing motor and that of th...

  • Page 97

    Indoor unit installation installation 93 3.5 console indoor unit installation 3.5.1 service space for indoor unit 3.5.2 install the main body  fix the hook with tapping screw onto the wall  hang the indoor unit on the hook. (the bottom of body can touch with floor or suspended, but the body must i...

  • Page 98

    Outdoor unit installation (side discharge unit) 94 installation 4. Outdoor unit installation (side discharge unit) 4.1 service space for outdoor unit more than 60cm more than 30cm more than 60cm more than 200cm air inlet air inlet more than 30cm air outlet (wall or obstacle) maintain channel 4.2 bol...

  • Page 99

    Refrigerant pipe installation installation 95 5. Refrigerant pipe installation 5.1 maximum pipe length and height drop considering the allowable pipe length and height drop to decide the installation position. Make sure the distance and height drop between indoor and outdoor unit not exceeded the da...

  • Page 100

    Refrigerant pipe installation 96 installation pipe diameter flare dimension a (mm) flare shape min max 1/4" (6.35) 8.3 8.7 r0.4~0.8 a 45¡ ã 90° 4 -+ 3/8" (9.52) 12.0 12.4 1/2" (12.7) 15.4 15.8 5/8" (15.9) 18.6 19.1 3/4" (19) 22.9 23.3  after flared the pipe, the opening part must be seal by end cov...

  • Page 101

    Refrigerant pipe installation installation 97 note: all used branch pipe must be produced by midea, otherwise it causes malfunction. The indoor units should be installed equivalently at the both side of the u type branch pipe. Permitted value piping p ipe lengt h total pipe length (actual) 18k+18k 3...

  • Page 102

    Refrigerant pipe installation 98 installation.

  • Page 103

    Drainage pipe installation installation 99 6. Drainage pipe installation install the drainage pipe as shown below and take measures against condensation. Improperly installation could lead to leakage and eventually wet furniture and belongings. 6.1 installation principle  ensure at least 1/100 slop...

  • Page 104

    Drainage pipe installation 100 installation 6.2.3 individual design of drainage pipe system  the drainage pipe of air conditioner shall be installed separately with other sewage pipe, rainwater pipe and drainage pipe in building.  the drainage pipe of the indoor unit with water pump should be apar...

  • Page 105

    Drainage pipe installation installation 101 indoor unit more than 50mm more than 25mm plug water storage pipe 6.2.7 lifting pipe setting of indoor unit with water pump  the length of lifting pipe should not exceed the pump head of indoor unit water pump. Pump head of big four way cassette: 750mm pu...

  • Page 106

    Drainage pipe installation 102 installation 6.3 drainage test 6.3.1 water leakage test after finishing the construction of drainage pipe system, fill the pipe with water and keep it for 24 hours to check whether there is leakage at joint section. 6.3.2 water discharge test 1. Natural drainage mode(t...

  • Page 107

    Vacuum drying and leakage checking installation 103 7. Vacuum drying and leakage checking 7.1 purpose of vacuum drying  eliminating moisture in system to prevent the phenomena of ice-blockage and copper oxidation. Ice-blockage shall cause abnormal operation of system, while copper oxide shall damag...

  • Page 108

    Additional refrigerant charge 104 installation 8. Additional refrigerant charge  after the vacuum drying process is carried out, the additional refrigerant charge process need to be performed.  the outdoor unit is factory charged with refrigerant. The additional refrigerant charge volume is decide...

  • Page 109

    Engineering of insulation installation 105 9. Engineering of insulation 9.1 insulation of refrigerant pipe 9.1.1 operational procedure of refrigerant pipe insulation cut the suitable pipe → insulation (except joint section) → flare the pipe → piping layout and connection→ vacuum drying → insulate th...

  • Page 110

    Engineering of insulation 106 installation cause leakage to damage the house decoration..

  • Page 111

    Engineering of electrical wiring installation 107 9.2.3 insulation material selection for drainage pipe  the insulation material should be flame retardant material, the flame retardancy of the material should be selected according to the local law.  thickness of insulation layer is usually above 1...

  • Page 112

    Test operation 108 installation 11. Test operation 11.1 the test operation must be carried out after the entire installation has been completed. 11.2 please confirm the following points before the test operation.  the indoor unit and outdoor unit are installed properly.  tubing and wiring are corr...

  • Page 113: Part 5

    Electrical control system electrical control system 109 part 5 electrical control system 1. Electrical control function .................................... 110 2. Troubleshooting ...................................................... 124 3. Controller ..................................................

  • Page 114

    Electrical control function 110 electrical control system 1. Electrical control function 1.1 definition t1: indoor room temperature t2: coil temperature of indoor heat exchanger middle. T2b: coil temperature of indoor heat exchanger outlet. T3: coil temperature of condenser t4: outdoor ambient tempe...

  • Page 115

    Electrical control function electrical control system 111 1.3 operation modes and functions 1.3.1 fan mode (1) outdoor fan and compressor stop. (2) temperature setting function is disabled, and no setting temperature is displayed. (3) for console& compact cassette(12k): indoor fan can be set to high...

  • Page 116

    Electrical control function 112 electrical control system 1.3.2.2 outdoor fan running rules t4 a dc_fan_hi_spd_add b dc_fan_mid_spd_add c dc_fan_min_spd_add d dc_fan_slow_spd_add e dc_fan_sslow_spd_add 23℃ 22℃ 20℃ 28℃ 19℃ 17℃ 26℃ 25℃ 1.3.2.3 indoor fan running rules for console(12k): in cooling mode...

  • Page 117

    Electrical control function electrical control system 113 for compact cassette(12k)、a5(12k) in cooling mode, indoor fan runs all the time and the speed can be selected as high, medium, low, auto and silent. The auto fan: 3.5 3.0 high low 1.0 medium 1.5 for other models: 5.0 4.0 high low 2.0 medium 3...

  • Page 118

    Electrical control function 114 electrical control system 1.3.3 heating mode 1.3.2.1 outdoor pmw open angle control the unit is working in heating mode with the exv open 300p(for 12k,it is 480p) for 3 minutes, then adjusting pmw open angle according to the temperature of compressor discharge every 2...

  • Page 119

    Electrical control function electrical control system 115 -1.0 -2.0 -3.0 -4.0 0.0 t1-ts+¦ ¤ t l (h+-l)*0.4+l (h+-l)*0.6+l -5.0 -6.0 -6.5 h+ (h+-l)*0.8+l (h+-l)*0.6+l (h+-l)*0.2+l for compact cassette(12k)、a5(12k): when the compressor is on, the indoor fan can be set to high, medium, low, auto and si...

  • Page 120

    Electrical control function 116 electrical control system 1.3.3.4 defrosting mode： for 12k units： condition of defrosting: if any one of the following items is satisfied, ac will enter the defrosting mode. After the compressor starts up and keeps running, mark the minimum value of t3 from the 10th m...

  • Page 121

    Electrical control function electrical control system 117 model mou-36hfn1-qrc4 : condition of defrosting: t3≤tempenterdefrost_add ℃ and lasts for 40 minutes. Condition of ending defrosting: if any one of following items is satisfied, defrosting will stop and the machine will turn to normal heating ...

  • Page 122

    Electrical control function 118 electrical control system time2 time conditions(meet the following conditions) 1.Running in heating mode 2. T4℃ 3. Compressor is on 4. T3≤tempenterdefrost_add ℃ cleared conditions (meet any one of the following conditions) 1. Compressor is off and t3＞tempenterdefrost_...

  • Page 123

    Electrical control function electrical control system 119 1.3.3.5 high evaporator coil temp.T2 protection: for 12k units： testop t2 resume off decrease tedown tenorm hold off: compressor stops. Decrease: decrease the running frequency to the lower level. Hold: keep the current frequency. Resume: no ...

  • Page 124

    Electrical control function 120 electrical control system 1.3.5 drying mode for 12k units: indoor fan speed is fixed at breeze and can’t be changed. The louver angle is the same as in cooling mode. Low indoor room temperature protection in drying mode, if room temperature is lower than 10℃, the comp...

  • Page 125

    Electrical control function electrical control system 121 1.3.9 drain pump control (for duct & cassette) adopt the water-level switch to control the action of drain pump. Main action under different condition :( every 5 seconds the system will check the water level one time) 1. When the a/c operates...

  • Page 126

    Electrical control function 122 electrical control system n display remark 00 normal display display running frequency, running state or malfunction code 01 indoor unit capacity demand code actual data*hp*10 if capacity demand code is higher than 99, the digital display tube will show single digit a...

  • Page 127

    Electrical control function electrical control system 123 21 condenser pipe temp. Of 3# indoor unit display tube will show “70”. If the capacity demand is 0, , the digital display tube will show “0. If the indoor unit is not connected, the digital display tube will show: “――”(heating t2，cooling t2b)...

  • Page 128

    Troubleshooting 124 electrical control system 2. Troubleshooting 2.1 display board 2.1.1 icon explanation on indoor display board (super slim cassette). 2.1.2 icon explanation on indoor display board (a5 duct) operation timer def./fan alarm temporary button operation lamp timer indicator infrared si...

  • Page 129

    Troubleshooting electrical control system 125 2.1.5 icon explanation on indoor display board (compact cassette). 2.1.6 icon explanation on indoor display board (console).

  • Page 130

    Troubleshooting 126 electrical control system 2.2 indoor unit malfunction for console(12k) no. Malfunction running lamp timer lamp defrosting lamp 1 refrigerant leakage detection ☆ ☆ ◎ 2 open or short circuit of t1 temperature sensor ☆ x x 3 open or short circuit of t2 temperature sensor x x ☆ 4 ind...

  • Page 131

    Troubleshooting electrical control system 127 12 outdoor current protection ☆ x ☆ ☆ p2 13 inverter compressor drive error x ◎ x x p4 14 indoor fan speed has been out of control. O x ☆ o f5 o (on) x(off) ☆(flash at 5hz) ◎(flash at 0.5hz) for other models: no. Malfunction defrosting lamp alarm lamp ru...

  • Page 132

    Troubleshooting 128 electrical control system 2.3 outdoor unit malfunction 18~36k display malfunction or protection e0 outdoor eeprom malfunction e2 indoor / outdoor units communication error e3 communication malfunction between ipm board and outdoor main board e4 open or short circuit of t3 or t4 t...

  • Page 133

    Troubleshooting electrical control system 129 2.4 solving steps for typical malfunction 2.4.1 for the indoor unit 2.4.1.1 open or short circuit of temperature sensor check the connections between temperature sensor and pcb. Are the connections good? Correct the connections. No yes yes replace indoor...

  • Page 134

    Troubleshooting 130 electrical control system 2.4.1.2. Outdoor unit malfunction whether the outdoor main board has error display refer to corresponding solving steps yes no no check whether the power is on replace outdoor main board yes whether the outdoor unit is power on check whether the communic...

  • Page 135

    Troubleshooting electrical control system 131 2.4.1.3. Indoor eeprom malfunction if the eeprom chip is welded on pcb, replace the pcb directly. Otherwise, check whether the eeprom chip plugged in pcb well? Yes no yes insert the eeprom well replace the indoor pcb. Shut off the power supply and turn i...

  • Page 136

    Troubleshooting 132 electrical control system 2.4.1.5. Indoor fan speed has been out of control. Shut off the power supply and turn it on 5 seconds later. Is it still displaying the error code? Shut off the power supply, rotate the fan by hand. Does it rotate properly? The unit operates normally. Fi...

  • Page 137

    Troubleshooting electrical control system 133 no. Color 1 red 2 --- 3 black 4 white 5 yellow 6 blue for console: 5 4 6 3 2 1 no. Color 1 red 2 --- 3 white 4 blue 5 yellow 6 black 2.Indoor dc fan motor(control chip is in outdoor pcb) no. 1 2 3 4 5 color orange grey white pink black signal hu hv hw vc...

  • Page 138

    Troubleshooting 134 electrical control system the value is not 5v, change the pcb. Otherwise, go to step 3. 3) rotate the fan by hand, measure the voltage of pin1-5, pin 2-5 and pin 3-5 in feedback signal connector. If any voltage is not positive voltage fluctuation, the fan motor must has problems ...

  • Page 139

    Troubleshooting electrical control system 135 2.4.1.6.Refrigerant leakage detection is there cool air blowing out from indoor air outlet? Yes yes check if t2 sensor is well fixed. Correct the installation or replace t2 sensor. Does the problem remain again? No is there any leakage? Especially the co...

  • Page 140

    Troubleshooting 136 electrical control system 2.4.2 for the super-slim cassette with up-down panel 2.4.2.1communication error between indoor unit and up-down panel 2.4.2.2 up-down panel is defective f0 or f1 displayed f0 or f1 displayed communication failure between indoor unit and up-down panel, or...

  • Page 141

    Troubleshooting electrical control system 137 2.4.2.3 up-down panel is not closed f2 displayed f2 displayed the up-down panel is not closed the up-down panel is not closed check if the filter panel of up-down panel is closed check if the filter panel of up-down panel is closed lift the filter panel ...

  • Page 142

    Troubleshooting 138 electrical control system 2.4.3 for the unit with twins function(for the super-slim cassette & a5 duct) 2.4.3.1 communication malfunction between master unit and indoor unit f3 displayed f3 displayed communication failure between master unit and slave unit communication failure b...

  • Page 143

    Troubleshooting electrical control system 139 2.4.4 for the outdoor unit 2.4.4.1. E0 malfunction if the eeprom chip is welded on pcb, replace the pcb directly. Otherwise, check whether the eeprom chip plugged in pcb well? Yes no yes insert the eeprom well replace the outdoor main board outdoor eepro...

  • Page 144

    Troubleshooting 140 electrical control system 2.4.4.2. E2 malfunction indoor / outdoor units communication error e2 display no power off, then turn on the unit 5 seconds later(reconnect the power wire).Is the error still displaying after several minutes? Adopt shield cable/shield cable earthing. No ...

  • Page 145

    Troubleshooting electrical control system 141 2.4.4.3. E3 malfunction communication malfunction between ipm board and outdoor main board is there at least one led in the ipm board light? Check the signal wire between the ipm module and the main board, is it connected good? Reconnect and retry. Is er...

  • Page 146

    Troubleshooting 142 electrical control system 2.4.4.4. E4 malfunction judge 1: outdoor condenser temp. Sensor (t3) is malfunction e4 display no no replace condenser temp. Sensor(t3) check whether the wiring of the condenser temp. Sensor(t3) is broken off check whether the resistance of condenser tem...

  • Page 147

    Troubleshooting electrical control system 143 2.4.4.5. E5 malfunction (for single phase units) voltage protection check the voltage of outdoor unit power supply, whether the voltage between l(1) and n is about 220~240vac check the power supply check whether the voltage of ipm board p and n is normal...

  • Page 148

    Troubleshooting 144 electrical control system 2.4.4.6. E5 malfunction (for three phases units) voltage protection check whether the voltage range of p-n on ipm module is normal? Dc277-356v for 18k/ 24kbtu/h; dc277-410v for 36kbtu/h check the power supply check whether the voltage range of p-n on ipm...

  • Page 149

    Troubleshooting electrical control system 145 2.4.4.7. E6 malfunction (only for mou-36hfn1-qrc4,mou-36hfn1-qrc8) e6 display pfc module protection check whether the connecting line between main board and the pfc module is connected tightly yes check whether the voltage range of p-n on ipm module is n...

  • Page 150

    Troubleshooting 146 electrical control system 2.4.4.8. E8 malfunction e8 display outdoor fan speed has been out of control shut off the power supply and turn it on 5 seconds later. Is it still displaying the error code? Shut off the power supply, rotate the fan by hand. Does it rotate properly? The ...

  • Page 151

    Troubleshooting electrical control system 147 2.4.4.8. P0 malfunction p0 display temperature protection of compressor top whether compressor operates? Whether refrigerant circulation volume is normal? Whether abnormality is the same after gas charging? Yes no no reconnect and retest. No check refrig...

  • Page 152

    Troubleshooting 148 electrical control system 2.4.4.9. P1 malfunction (for 36k models) p1 display high pressure protection judge 1: whether the wiring between the high pressure switch and main control board is connected well or correctly method: short connect the high pressure protector socket, chec...

  • Page 153

    Troubleshooting electrical control system 149 2.4.4.10. P2 malfunction (for 36k models) p2 display low pressure protection judge 1: whether the wiring between the low pressure protector and main control board is connected well or correctly method: short connect the low pressure protector socket, che...

  • Page 154

    Troubleshooting 150 electrical control system 2.4.4.11. P3 malfunction p3 display current protection of compressor judge 1: check whether the input current of the power supply wire is more than 14a (for 24k it is 18a,for 36k 1phase it is 21.5a,for 36k 3phase it is11a) yes replace the electric contro...

  • Page 155

    Troubleshooting electrical control system 151 2.4.4.12. 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 temperature protection of compressor discharge check whether ...

  • Page 156

    Troubleshooting 152 electrical control system 2.4.4.13. 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 than...

  • Page 157

    Troubleshooting electrical control system 153 2.4.4.14. P6 malfunction (for single phase units) at first test the resistance between every two ports of u, v, w of ipm and p, n. If any result of them is 0 or close to 0, the ipm is defective. Otherwise, please follow the procedure below: p6 display ip...

  • Page 158

    Troubleshooting 154 electrical control system 2.4.4.15. P6 malfunction (for three phases units) at first test the resistance between every two ports of u, v, w of ipm and p, n. If any result of them is 0 or close to 0, the ipm is defective. Otherwise, please follow the procedure below: p6 display ip...

  • Page 159

    Troubleshooting electrical control system 155 2.4.4.16. P7 malfunction p7 display high temperature protection of evaporator whether compressor operates? Yes check whether the heat exchanger is dirty, the air- outlet is blocked and the indoor fan is running normal? No check refrigerant system (such a...

  • Page 160

    Troubleshooting 156 electrical control system appendix 1 temperature 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 96.3423 23 10.9731 6...

  • Page 161

    Troubleshooting electrical control system 157 appendix 2 unit: ℃---k discharge temp. Sensor table -20 542.7 20 68.66 60 13.59 100 3.702 -19 511.9 21 65.62 61 13.11 101 3.595 -18 483 22 62.73 62 12.65 102 3.492 -17 455.9 23 59.98 63 12.21 103 3.392 -16 430.5 24 57.37 64 11.79 104 3.296 -15 406.7 25 5...

  • Page 162

    Controller 158 electrical control system 3. Controller 3.1wireless remote controller 3.1.1rg51q1/bge general function for wireless remote controller: model rg51q1/bge rated voltage 3.0v(2pieces of lr03 7＃ batteries) min voltage for sending signal of cpu 2.4v effective receiving distance 8m~11m opera...

  • Page 163

    Controller electrical control system 159 buttons and functions 1. Adjust : decrease the set temp. Keeping pressing will decrease the temp with 1℃ per 0.5s. 2. Adjust : increase the set temp. Keeping pressing will increase the temp with 1℃ per 0.5s. 3. Mode: once pressing, running mode will be select...

  • Page 164

    Controller 160 electrical control system 3.1.2 rg51c/e remote controller specifications model rg51c/e rated voltage 3.0v(2pieces of lr03 7＃ batteries) lowest voltage of cpu emitting signal 2.0v reaching distance 8m (when using 3.0 voltage, it can get 11m) environment temperature range -5℃～60℃ introd...

  • Page 165

    Controller electrical control system 161 controls into faceplate setting state and the lcd shows f2.Press the tempup( ) to control the faceplate up and press the temp down( ) to control the faceplate down. Press any button to exit the faceplate setting state, then the lcd back to the normal display....

  • Page 166

    Controller 162 electrical control system 3.1.3 r51d/(c)e remote controller specifications model r51d/e，r51d/ce rated voltage 3.0v(2pieces of lr03 7＃ batteries) min voltage for sending signal of cpu 2.0v effective receiving distance 8m (when using 3.0 voltage, it can get 11m) operation condition -5~6...

  • Page 167

    Controller electrical control system 163 control will return to the initial settings.(use a φ1mm little round stick to push the button ) 7. Air direction button: push this button, the louver can be fixed at a desired angle. The louver swing (upward or downward) to a certain angle for each press. Whe...

  • Page 168

    Controller 164 electrical control system 3.2 wired remote controller 3.2.1 kjr-10b name and functions of buttons on the wire controller 1 mode selection button: it is used to select mode, push the button one time, then the operation modes will change in turn as follows: auto cool dry heat fan remark...

  • Page 169

    Controller electrical control system 165 name and function of lcd on the wire controller 1 mode select button (mode): press mode button to select “cool”, “dry” , "heat", or "fan only" mode.(heat is invalid for cool only wire controller.) auto cool dry heat fan 2 fan speed button (fan speed) press fa...

  • Page 170

    Controller 166 electrical control system remark: the wired controller will reset to factory setting with auto mode, auto fan and 24℃ setting temperature when the air conditioner restarts after power failure. And this may cause inconsistent displays on the wired controller and on the air conditioner....