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Panasonic CS-E12NKR Service Manual

Other manuals for CS-E12NKR: Operating Instructions Manual

Summary of CS-E12NKR

  • Page 1

    © panasonic appliances air-conditioning (m) sdn. Bhd. 2012. Unauthorized copying and distribution is a violation of law. Order no: papamy1207090ce indoor unit outdoor unit cs-e7nkr cs-e9nkr cs-e12nkr cs-e15nkr cs-e18nkr cs-e21nkr cs-e24nkr cs-e28nkr cu-e7nkr cu-e9nkr cu-e12nkr cu-e15nkr cu-e18nkr cu...

  • Page 2: Table of Contents

    2 table of contents 1. Safety precautions .............................................3 2. Specification .......................................................5 3. Features.............................................................29 4. Location of controls and components..........30 4.1 indoor ...

  • Page 3: 1. Safety Precautions

    3 caution warning warning 1. Safety precautions read the following “safety precautions” carefully before perform any servicing. Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model installed. The c...

  • Page 4

    4 caution warning 19. During installation, install the refrigerant piping properly before run the compressor. (operation of compressor without fixing refrigeration piping and valves at opened condition will caused suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion,...

  • Page 5: 2. Specification

    5 2. Specification indoor cs-e7nkr model outdoor cu-e7nkr performance test condition as phase, hz single, 50 power supply v 230 240 min. Mid. Max. Min. Mid. Max. Kw 0.85 2.05 2.40 0.85 2.05 2.40 btu/h 2900 6990 8180 2900 6990 8180 capacity kcal/h 730 1760 2060 730 1760 2060 running current a - 2.2 -...

  • Page 6

    6 type cross-flow fan material asg20k1 motor type transistor (8-poles) input power w 47.3 - 47.3 output power w 40 cool rpm 630 qlo heat rpm 650 cool rpm 710 lo heat rpm 760 cool rpm 900 me heat rpm 950 cool rpm 1090 hi heat rpm 1150 cool rpm 1190 indoor fan speed shi heat rpm 1250 type propeller fa...

  • Page 7

    7 inner diameter mm 16 drain hose length mm 650 fin material aluminium (pre coat) fin type slit fin row x stage x fpi 2 x 15 x 21 indoor heat exchanger size (w x h x l) mm 610 x 315 x 25.4 fin material aluminium (blue coated) fin type corrugated fin row x stage x fpi 2 x 28 x 17 outdoor heat exchang...

  • Page 8

    8 indoor cs-e9nkr model outdoor cu-e9nkr performance test condition as phase, hz single, 50 power supply v 230 240 min. Mid. Max. Min. Mid. Max. Kw 0.90 2.60 3.00 0.90 2.60 3.00 btu/h 3070 8870 10200 3070 8870 10200 capacity kcal/h 770 2240 2580 770 2240 2580 running current a - 2.6 - - 2.5 - input ...

  • Page 9

    9 type cross-flow fan material asg20k1 motor type transistor (8-poles) input power w 47.3 - 47.3 output power w 40 cool rpm 630 qlo heat rpm 690 cool rpm 740 lo heat rpm 820 cool rpm 940 me heat rpm 1010 cool rpm 1140 hi heat rpm 1200 cool rpm 1240 indoor fan speed shi heat rpm 1300 type propeller f...

  • Page 10

    10 inner diameter mm 16 drain hose length mm 650 fin material aluminium (pre coat) fin type slit fin row x stage x fpi 2 x 15 x 21 indoor heat exchanger size (w x h x l) mm 610 x 315 x 25.4 fin material aluminium (blue coated) fin type corrugated fin row x stage x fpi 2 x 28 x 17 outdoor heat exchan...

  • Page 11

    11 indoor cs-e12nkr model outdoor cu-e12nkr performance test condition as phase, hz single, 50 power supply v 230 240 min. Mid. Max. Min. Mid. Max. Kw 0.90 3.50 4.00 0.90 3.50 4.00 btu/h 3070 11900 13600 3070 11900 13600 capacity kcal/h 770 3010 3440 770 3010 3440 running current a - 3.9 - - 3.8 - i...

  • Page 12

    12 type cross-flow fan material asg20k1 motor type transistor (8-poles) input power w 47.3 - 47.3 output power w 40 cool rpm 650 qlo heat rpm 770 cool rpm 760 lo heat rpm 870 cool rpm 990 me heat rpm 1090 cool rpm 1220 hi heat rpm 1320 cool rpm 1320 indoor fan speed shi heat rpm 1360 type propeller ...

  • Page 13

    13 inner diameter mm 16 drain hose length mm 650 fin material aluminium (pre coat) fin type slit fin row x stage x fpi 2 x 15 x 21 indoor heat exchanger size (w x h x l) mm 610 x 315 x 25.4 fin material aluminium (blue coated) fin type corrugated fin row x stage x fpi 2 x 28 x 17 outdoor heat exchan...

  • Page 14

    14 indoor cs-e15nkr model outdoor cu-e15nkr performance test condition as phase, hz single, 50 power supply v 230 240 min. Mid. Max. Min. Mid. Max. Kw 0.90 4.40 5.00 0.90 4.40 5.00 btu/h 3070 15000 17100 3070 15000 17100 capacity kcal/h 770 3780 4300 770 3780 4300 running current a - 5.5 - - 5.3 - i...

  • Page 15

    15 type cross-flow fan material asg20k1 motor type transistor (8-poles) input power w 94.8 - 94.8 output power w 40 cool rpm 640 qlo heat rpm 790 cool rpm 830 lo heat rpm 900 cool rpm 1090 me heat rpm 1130 cool rpm 1350 hi heat rpm 1370 cool rpm 1370 indoor fan speed shi heat rpm 1370 type propeller...

  • Page 16

    16 inner diameter mm 16 drain hose length mm 650 fin material aluminium (pre coat) fin type slit fin row x stage x fpi 2 x 15 x 21 indoor heat exchanger size (w x h x l) mm 610 x 315 x 25.4 fin material aluminium (blue coated) fin type corrugated fin row x stage x fpi 2 x 36 x 19 outdoor heat exchan...

  • Page 17

    17 indoor cs-e18nkr model outdoor cu-e18nkr performance test condition as phase, hz single, 50 power supply v 230 240 min. Mid. Max. Min. Mid. Max. Kw 0.90 5.00 6.00 0.90 5.00 6.00 btu/h 3070 17100 20500 3070 17100 20500 capacity kcal/h 770 4300 5160 770 4300 5160 running current a - 6.1 - - 5.9 - i...

  • Page 18

    18 type cross-flow fan material asg30k1 motor type transistor (8-poles) input power w 94.8 - 94.8 output power w 40 cool rpm 870 qlo heat rpm 850 cool rpm 950 lo heat rpm 970 cool rpm 1110 me heat rpm 1130 cool rpm 1280 hi heat rpm 1300 cool rpm 1400 indoor fan speed shi heat rpm 1420 type propeller...

  • Page 19

    19 inner diameter mm 16 drain hose length mm 650 fin material aluminium (pre coat) fin type slit fin row x stage x fpi 2 x 15 x 19 indoor heat exchanger size (w x h x l) mm 810 x 315 x 25.4 fin material aluminium (blue coated) fin type corrugated fin row x stage x fpi 2 x 36 x 18 outdoor heat exchan...

  • Page 20

    20 indoor cs-e21nkr model outdoor cu-e21nkr performance test condition as phase, hz single, 50 power supply v 230 240 min. Mid. Max. Min. Mid. Max. Kw 1.70 6.30 7.10 1.70 6.30 7.10 btu/h 5800 21500 24200 5800 21500 24200 capacity kcal/h 1460 5420 6110 1460 5420 6110 running current a - 8.3 - - 8.1 -...

  • Page 21

    21 type cross-flow fan material asg30k1 motor type transistor (8-poles) input power w 94.8 - 94.8 output power w 40 cool rpm 860 qlo heat rpm 910 cool rpm 960 lo heat rpm 1000 cool rpm 1150 me heat rpm 1190 cool rpm 1350 hi heat rpm 1390 cool rpm 1400 indoor fan speed shi heat rpm 1490 type propelle...

  • Page 22

    22 inner diameter mm 16 drain hose length mm 650 fin material aluminium (pre coat) fin type slit fin row x stage x fpi 2 x 15 x 21 indoor heat exchanger size (w x h x l) mm 810 x 315 x 25.4 fin material aluminium (blue coated) fin type corrugated fin row x stage x fpi 2 x 30 x 19 outdoor heat exchan...

  • Page 23

    23 indoor cs-e24nkr model outdoor cu-e24nkr performance test condition as phase, hz single, 50 power supply v 230 240 min. Mid. Max. Min. Mid. Max. Kw 1.70 7.10 8.10 1.70 7.10 8.10 btu/h 5800 24200 27600 5800 24200 27600 capacity kcal/h 1460 6110 6970 1460 6110 6970 running current a - 9.7 - - 9.4 -...

  • Page 24

    24 type cross-flow fan material asg30k1 motor type transistor (8-poles) input power w 94.8 - 94.8 output power w 40 cool rpm 890 qlo heat rpm 960 cool rpm 990 lo heat rpm 1060 cool rpm 1230 me heat rpm 1250 cool rpm 1470 hi heat rpm 1440 cool rpm 1530 indoor fan speed shi heat rpm 1540 type propelle...

  • Page 25

    25 inner diameter mm 16 drain hose length mm 650 fin material aluminium (pre coat) fin type slit fin row x stage x fpi 2 x 15 x 21 indoor heat exchanger size (w x h x l) mm 25.4 x 315 x 810 fin material aluminium (blue coated) fin type corrugated fin row x stage x fpi 2 x 30 x 19 outdoor heat exchan...

  • Page 26

    26 indoor cs-e28nkr model outdoor cs-e28nkr performance test condition as phase, hz single, 50 power supply v 230 240 min. Mid. Max. Min. Mid. Max. Kw 2.30 8.00 8.60 2.30 8.00 8.60 btu/h 7840 27300 29300 7840 27300 29300 capacity kcal/h 1980 6880 7400 1980 6880 7400 running current a - 11.2 - - 10.9...

  • Page 27

    27 type cross-flow fan material asg30k1 motor type transistor (8-poles) input power w 94.8 - 94.8 output power w 40 cool rpm 970 qlo heat rpm 1000 cool rpm 1070 lo heat rpm 1100 cool rpm 1300 me heat rpm 1330 cool rpm 1530 hi heat rpm 1560 cool rpm 1570 indoor fan speed shi heat rpm 1570 type propel...

  • Page 28

    28 inner diameter mm 16 drain hose length mm 650 fin material aluminium (pre coat) fin type slit fin row x stage x fpi 2 x 15 x 21 indoor heat exchanger size (w x h x l) mm 25.4 x 315 x 810 fin material aluminium (blue coated) fin type corrugated fin row x stage x fpi 2 x 44 x 19 outdoor heat exchan...

  • Page 29: 3.   Features

    29 3. Features inverter technology o wider output power range o energy saving o quick cooling o quick heating o more precise temperature control e-ion air purifying system with patrol sensor o active e-ions are released to catch dust particles and bring them back the large positively charged filter ...

  • Page 30

    30 4. Location of controls and components 4.1 indoor unit 4.2 outdoor unit 4.3 remote control.

  • Page 31: 5. Dimensions

    31 5. Dimensions 5.1 indoor unit 5.1.1 cs-e7nkr cs-e9nkr cs-e12nkr cs-e15nkr.

  • Page 32

    32 5.1.2 cs-e18nkr cs-e21nkr cs-e24nkr cs-e28nkr.

  • Page 33

    33 5.2 outdoor unit 5.2.1 cu-e7nkr cu-e9nkr cu-e12nkr 5.2.2 cu-e15nkr cu-e18nkr cu-e21nkr cu-e24nkr.

  • Page 34

    34 5.2.3 cu-e28nkr.

  • Page 35

    35 6. Refrigeration cycle diagram 6.1 cu-e7nkr.

  • Page 36

    36 6.2 cu-e9nkr cu-e12nkr.

  • Page 37

    37 6.3 cu-e15nkr cu-e18nkr.

  • Page 38

    38 6.4 cu-e21nkr.

  • Page 39

    39 6.5 cu-e24nkr cu-e28nkr.

  • Page 40: 7. Block Diagram

    40 7. Block diagram 7.1 cu-e7nkr cu-e9nkr cu-e12nkr.

  • Page 41

    41 7.2 cu-e15nkr cu-e18nkr cu-e21nkr.

  • Page 42

    42 7.3 cu-e24nkr.

  • Page 43

    43 7.4 cu-e28nkr.

  • Page 44

    44 8. Wiring connection diagram 8.1 indoor unit.

  • Page 45

    45 8.2 outdoor unit 8.2.1 cu-e7nkr cu-e9nkr cu-e12nkr.

  • Page 46

    46 8.2.2 cu-e15nkr cu-e18nkr.

  • Page 47

    47 8.2.3 cu-e21nkr.

  • Page 48

    48 8.2.4 cu-e24nkr.

  • Page 49

    49 8.2.5 cu-e28nkr.

  • Page 50

    50 9. Electronic circuit diagram 9.1 indoor unit.

  • Page 51

    51 9.2 outdoor unit 9.2.1 cu-e7nkr cu-e9nkr cu-e12nkr.

  • Page 52

    52 9.2.2 cu-e15nkr cu-e18nkr.

  • Page 53

    53 9.2.3 cu-e21nkr.

  • Page 54

    54 9.2.4 cu-e24nkr.

  • Page 55

    55 9.2.5 cu-e28nkr.

  • Page 56: 10.  Printed Circuit Board

    56 10. Printed circuit board 10.1 indoor unit 10.1.1 main printed circuit board 10.1.2 indicator printed circuit board.

  • Page 57

    57 10.1.3 receiver printed circuit board 10.1.4 high voltage power supply printed circuit board 10.1.5 comparator printed circuit board.

  • Page 58

    58 10.1.6 human activity sensor printed circuit board.

  • Page 59

    59 10.2 outdoor unit 10.2.1 cu-e7nkr cu-e9nkr cu-e12nkr.

  • Page 60

    60 10.2.2 cu-e15nkr cu-e18nkr.

  • Page 61

    61 10.2.3 cu-e21nkr cu-e24nkr.

  • Page 62

    62 10.2.4 cu-e28nkr.

  • Page 63

    63 10.2.5 noise filter printed board (cu-e21nkr).

  • Page 64: 11. Installation

    64 11. Installation instruction 11.1 select the best location (for e7/9/12/15/18/21/24nkr only) 11.1.1 indoor unit do not install the unit in excessive oil fume area such as kitchen, workshop and etc. There should not be any heat source or steam near the unit. There should not be any obstacles block...

  • Page 65

    65 11.2 indoor unit 11.2.1 how to fix installation plate the mounting wall shall be strong and solid enough to prevent it from vibration. The center of installation plate should be at more than c at right and left of the wall. The distance from installation plate edge to ceiling should more than d ....

  • Page 66

    66 11.2.3.1 for the right rear piping 11.2.3.2 for the right and right bottom piping 11.2.3.3 for the embedded piping (this can be used for left rear piping and bottom piping also.).

  • Page 67

    67 11.2.4 connect the cable to the indoor unit 1 the inside and outside connecting cable can be connected without removing the front grille. 2 connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1.5 mm 2 flexible cord, type designation 245 iec 57 or h...

  • Page 68

    68 11.2.4.1 cutting and flaring the piping 1 please cut using pipe cutter and then remove the burrs. 2 remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. 3 please make flare after inserting the f...

  • Page 69

    69 11.3 outdoor unit 11.3.1 install the outdoor unit after selecting the best location, start installation to indoor/outdoor unit installation diagram. 1 fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø10 mm). 2 when installing at roof, please consider strong wind and e...

  • Page 70

    70 4 close the low side valve of the charging set and turn off the vacuum pump. Make sure that the needle in the gauge does not move after approximately five minutes. Note: be sure to take this procedure in order to avoid refrigerent gas leakage. 5 disconnect the charging hose from the vacuum pump a...

  • Page 71

    71 6 secure the power supply cord and connecting cable onto the control board with the holder. 7 attach the control board cover back to the original position with the screw. 8 for wire stripping and connection requirement, refer to instruction 11.2.4 of the indoor unit. Warning this equipment must b...

  • Page 72: 12. Installation

    72 12. Installation instruction 12.1 select the best location (for e28nkr only) 12.1.1 indoor unit do not install the unit in excessive oil fume area such as kitchen, workshop and etc. There should not be any heat source or steam near the unit. There should not be any obstacles blocking the air circ...

  • Page 73

    73 12.2 indoor unit 12.2.1 how to fix installation plate the mounting wall shall be strong and solid enough to prevent it from vibration. The center of installation plate should be at more than c at right and left of the wall. The distance from installation plate edge to ceiling should more than d ....

  • Page 74

    74 12.2.3.1 for the right rear piping 12.2.3.2 for the right and right bottom piping 12.2.3.3 for the embedded piping (this can be used for left rear piping and bottom piping also.).

  • Page 75

    75 12.2.4 connect the cable to the indoor unit 1 the inside and outside connecting cable can be connected without removing the front grille. 2 connection cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 x 1.5 mm 2 flexible cord, type designation 245 iec 57 or h...

  • Page 76

    76 12.2.4.1 cutting and flaring the piping 1 please cut using pipe cutter and then remove the burrs. 2 remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe. 3 please make flare after inserting the f...

  • Page 77

    77 12.3 outdoor unit 12.3.1 install the outdoor unit after selecting the best location, start installation to indoor/outdoor unit installation diagram. 1 if installing the unit to a concrete base or other solid base, use m10 or w3/8 bolts and nuts to secure the unit, and ensure that the unit is full...

  • Page 78

    78 the cardboard must be removed before installation of piping work. 12.3.3 evacuation of the equipment when installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following procedure. 1 connect a charging hose with a push pin to the low side of a charging...

  • Page 79

    79 4 connecting cable between outdoor unit and dred (demand response enabling devices) shall be double insulation layer, polychloroprene sheathed (>50v) with size 4 x (0.5 mm 2 to 2.0 mm 2 ) cable or flexible cord, where the maximum allowable length is 30m. 5 connect the power supply cord and connec...

  • Page 80: 13. Operation

    80 13. Operation control 13.1 basic function inverter control, which equipped with a microcomputer in determining the most suitable operating mode as time passes, automatically adjusts output power for maximum comfort always. In order to achieve the suitable operating mode, the microcomputer maintai...

  • Page 81

    81 13.1.5 automatic operation this mode can be set using remote control and the operation is decided by remote control setting temperature, remote control operation mode and indoor intake air temperature. During operation mode judgment, indoor fan motor (with speed of lo-) is running for 30 seconds ...

  • Page 82

    82 o the indoor fan will operate according to pattern below. [heating] o according to indoor pipe temperature, automatic heating fan speed is determined as follows. 13.2.2 feedback control immediately after the fan motor started, feedback control is performed once every second. During fan motor on, ...

  • Page 83

    83 13.4 airflow direction there are two types of airflow, vertical airflow (directed by horizontal vane) and horizontal airflow (directed by vertical vanes). Control of airflow direction can be automatic (angles of direction is determined by operation mode, heat exchanger temperature and intake air ...

  • Page 84

    84 manual horizontal airflow direction can be set using remote control; the angles of the vane are as stated below and the positions of the vane are as figure 2 above. Pattern 1 2 3 4 5 airflow direction patterns at remote control vane angle (°) 90 68 78 102 112 13.5 quiet operation (cooling mode/co...

  • Page 85

    85 control contents o fan speed manual fan speed is changed from normal setting to quiet setting of respective fan speed. This is to reduce sound of hi, me, lo for 3db. Fan speed for quiet operation is reduced from setting fan speed. O fan speed auto indoor fm rpm depends on pipe temp sensor of indo...

  • Page 86

    86 13.10 indication panel led power timer powerful nanoe-g auto comfort quiet color green orange orange blue green green light on operation on timer setting on powerful mode on nanoe-g on auto comfort on quiet mode on light off operation off timer setting off powerful mode off nanoe-g off auto comfo...

  • Page 87

    87 remote control receiving sound o normal operation Î nanoe-g operation : beep o nanoe-g operation Î normal operation : beep o stop Î nanoe-g individual operation : beep o nanoe-g individual operation Î stop : long beep power failure o during nanoe-g individual operation, if power failure occurs, a...

  • Page 88

    88 o troubleshooting method press nanoe-g button or off/on button to stop the operation and check the nanoe-g connector at pcb. After that, press nanoe-g button again to confirm the nanoe-g indicator do not blinks. The 24 timer counter will be clear after 10 minutes of normal operation or when opera...

  • Page 89

    89 eco navi stop conditions: o when eco navi button is pressed again. O when unit is off by off/on button. O when unit is off when off timer activates. O when unit is off by auto off/on button at indoor unit. O when powerful, quiet operation activates. O when ◄► button is pressed. Auto comfort / eco...

  • Page 90

    90 13.13.1.1 signal detection human activity sensor will turns on according to infrared sensors signal detection. Signal detection human activity indicator sensor 1 sensor 2 possible detected human position area left center right 1 0 c ■ ■ □ 0 1 a □ ■ ■ b ■ □ ■ a & c ■ □ ■ b & c ■ □ ■ a & c ■ □ ■ 1 ...

  • Page 91

    91 13.13.1.7 setting position judgment according to installation position when there is only one activity area detected, the horizontal airflow direction louver position is fixed according to chart below: horizontal airflow direction louver position target area left installation center installation ...

  • Page 92

    92 13.13.2.1 econavi demo mode to enable eco demo mode: to disable eco demo mode: o transmit eco demo signal again. Operation details infrared sensor human activity sensor sensor 1 sensor 2 left center right vane position fan speed 1 0 ■ ■ □ 5 hi 1 1 ■ □ ■ auto swing hi 0 1 □ ■ ■ 1 hi 0 0 ■ ■ ■ auto...

  • Page 93

    93 13.13.2.2 infrared sensor abnormality abnormality detection: o connector disconnection / wire cut abnormality sensor judge hi level continuously for 25 seconds o circuit abnormality 70 seconds after power on, if infrared sensor judge lo level continuously for 25 seconds error code judgment o when...

  • Page 94

    94 13.13.3 sunlight sensor during econavi operation, the sunlight sensor detects sunlight intensity coming through windows and differentiates between sunny and cloudy or night to further optimize energy saving by adjusting the temperature. Sunlight judgment is as following 13.13.3.1 sunlight intensi...

  • Page 95

    95 13.13.3.3 judge ambient condition according to sunlight intensity over a period of time, the system will analyze the ambient condition is sunny, cloudy or night. 13.13.3.4 temperature shift 13.13.3.5 sunlight sensor check mode to enable sunlight sensor check mode, during unit is off (power standb...

  • Page 96

    96 13.13.3.6 sunlight sensor abnormality abnormality detection: o when econavi is on, if the sunlight intensity value below minimum level continuously for 24 hours, the sunlight sensor disconnection error counter will increase by 1 time. If the econavi is off, the 24 hours timer will be reset, but t...

  • Page 97: 14. Protection

    97 14. Protection control 14.1 protection control for all operations 14.1.1 restart control (time delay safety control) the compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on again by pressing off/on button at remote control within this perio...

  • Page 98

    98 14.1.4 compressor overheating prevention control instructed frequency for compressor operation will be regulated by compressor discharge temperature. The changes of frequency are as below. If compressor discharge temperature exceeds 107°c, compressor will be stopped, occurs 4 times per 20 minutes...

  • Page 99

    99 14.1.7 low frequency protection control 2 when all the below conditions comply, the compressor frequency will change to lower frequency. Temperature, t, for: cooling/soft dry heating indoor intake air (°c) t ≥ 30 t ≥ 28 outdoor air (°c) t ≥ 38 t ≥ 24 indoor heat exchanger (°c) t t ≥ 0 14.2 protec...

  • Page 100

    100 14.2.5 dew prevention control 1 to prevent dew formation at indoor unit discharge area. This control will be activated if: o outdoor air temperature and indoor pipe temperature judgment by microcontroller is fulfilled. O when cooling or dry mode is operated more than 20 minutes or more. This con...

  • Page 101

    101 14.3.4 low temperature compressor oil return control in heating operation, if the outdoor temperature falls below -10°c (e7 ~ 18nk), -8°c (e21 ~ 28nk) when compressor starts, the compressor frequency will be regulated up to 600 seconds. 14.3.5 cold draught prevention control when indoor pipe tem...

  • Page 102: 15. Servicing

    102 15. Servicing mode 15.1 auto off/on button 1 auto operation mode the auto operation will be activated immediately once the auto off/on button is pressed. This operation can be used to operate air conditioner with limited function if remote control is misplaced or malfunction. 2 test run operatio...

  • Page 103

    103 4 remote control receiving sound off/on mode the remote control receiving sound off/on mode will be activated if the auto off/on button is pressed continuously for more than 16 seconds (4 “beep” sounds will occur at 16th seconds to identify the remote control receiving sound off/on mode is in st...

  • Page 104

    104 15.2.2 reset (rc) to clear and restore the remote control setting to factory default. O press once to clear the memory 15.2.3 reset (ac) to restore the unit’s setting to factory default o press once to restore the unit’s setting. 15.2.4 timer ▲ to change indoor unit indicator’s led intensity o p...

  • Page 105: 16. Troubleshooting

    105 16. Troubleshooting guide 16.1 refrigeration cycle system in order to diagnose malfunctions, make sure that there are no electrical problems before inspecting the refrigeration cycle. Such problems include insufficient insulation, problem with the power source, malfunction of a compressor and a ...

  • Page 106

    106 16.1.1 relationship between the condition of the air conditioner and pressure and electric current cooling mode heating mode condition of the air conditioner low pressure high pressure electric current during operation low pressure high pressure electric current during operation insufficient ref...

  • Page 107

    107 16.2 breakdown self diagnosis function 16.2.1 self diagnosis function (three digits alphanumeric code) once abnormality has occurred during operation, the unit will stop its operation, and timer led blinks. Although timer led goes off when power supply is turned off, if the unit is operated unde...

  • Page 108

    108 16.3 error code table.

  • Page 109

    109.

  • Page 110

    110 16.4 self-diagnosis method 16.4.1 h11 (indoor/outdoor abnormal communication) malfunction decision conditions during startup and operation of cooling and heating, the data received from outdoor unit in indoor unit signal transmission is checked whether it is normal. Malfunction caused faulty ind...

  • Page 111

    111 16.4.2 h12 (indoor/outdoor capacity rank mismatched) malfunction decision conditions during startup, error code appears when different types of indoor and outdoor units are interconnected. Malfunction caused wrong models interconnected. Wrong indoor unit or outdoor unit pcbs mounted. Indoor unit...

  • Page 112

    112 16.4.3 h14 (indoor intake air temperature sensor abnormality) malfunction decision conditions during startup and operation of cooling and heating, the temperatures detected by the indoor intake air temperature sensor are used to determine sensor errors. Malfunction caused faulty connector connec...

  • Page 113

    113 16.4.4 h15 (compressor temperature sensor abnormality) malfunction decision conditions during startup and operation of cooling and heating, the temperatures detected by the outdoor compressor temperature sensor are used to determine sensor errors. Malfunction caused faulty connector connection. ...

  • Page 114

    114 16.4.5 h16 (outdoor current transformer open circuit) malfunction decision conditions a current transformer (ct) is detected by checking the compressor running frequency ( ≥ rated frequency) and ct detected input current (less than 0.65a) for continuously 20 seconds. Malfunction caused ct defect...

  • Page 115

    115 16.4.6 h19 (indoor fan motor – dc motor mechanism locked) malfunction decision conditions the rotation speed detected by the hall ic during fan motor operation is used to determine abnormal fan motor (feedback of rotation > 2550rpm or malfunction caused operation stops due to short circuit insid...

  • Page 116

    116 16.4.7 h23 (indoor pipe temperature sensor abnormality) malfunction decision conditions during startup and operation of cooling and heating, the temperatures detected by the indoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction caused faulty connector connecti...

  • Page 117

    117 16.4.8 h25 (e-ion air purifying system abnormal) malfunction decision conditions during standby of cooling and heating operation, e-ion breakdown occurs and air conditioner stops operation. Malfunction caused faulty indoor main pcb. Faulty indoor e-ion power module. Troubleshooting.

  • Page 118

    118 16.4.9 h27 (outdoor air temperature sensor abnormality) malfunction decision conditions during startup and operation of cooling and heating, the temperatures detected by the outdoor air temperature sensor are used to determine sensor errors. Malfunction caused faulty connector connection. Faulty...

  • Page 119

    119 16.4.10 h28 (outdoor pipe temperature sensor abnormality) malfunction decision conditions during startup and operation of cooling and heating, the temperatures detected by the outdoor pipe temperature sensor are used to determine sensor errors. Malfunction caused faulty connector connection. Fau...

  • Page 120

    120 16.4.11 h30 (compressor discharge temperature sensor abnormality) malfunction decision conditions during startup and operation of cooling and heating, the temperatures detected by the outdoor discharge pipe temperature sensor are used to determine sensor errors. Malfunction caused faulty connect...

  • Page 121

    121 16.4.12 h32 (outdoor heat exchanger temperature sensor 2 abnormality) malfunction decision conditions during startup and operation of cooling and heating, the temperatures detected by the outdoor heat exchanger temperature sensor are used to determine sensor errors. Malfunction caused faulty con...

  • Page 122

    122 16.4.13 h33 (unspecified voltage between indoor and outdoor) malfunction decision conditions the supply power is detected for its requirement by the indoor/outdoor transmission. Malfunction caused wrong models interconnected. Wrong indoor unit and outdoor unit pcbs used. Indoor unit or outdoor u...

  • Page 123

    123 16.4.14 h34 (outdoor heat sink temperature sensor abnormality) malfunction decision conditions during startup and operation of cooling and heating, the temperatures detected by the outdoor heat sink temperature sensor are used to determine sensor errors. Malfunction caused faulty connector conne...

  • Page 124

    124 16.4.15 h36 (outdoor gas pipe sensor abnormality) malfunction decision conditions during startup and operation of cooling and heating, the temperatures detected by the outdoor gas pipe temperature sensor are used to determine sensor errors. Malfunction caused faulty connector connection. Faulty ...

  • Page 125

    125 16.4.16 h37 (outdoor liquid pipe temperature sensor abnormality) malfunction decision conditions during startup and operation of cooling and heating, the temperatures detected by the outdoor liquid pipe temperature sensor are used to determine sensor errors. Malfunction caused faulty connector c...

  • Page 126

    126 16.4.17 h97 (outdoor fan motor – dc motor mechanism locked) malfunction decision conditions the rotation speed detected by the hall ic during fan motor operation is used to determine abnormal fan motor. Malfunction caused operation stops due to short circuit inside the fan motor winding. Operati...

  • Page 127

    127 16.4.18 h98 (indoor high pressure protection) error code will not display (no timer led blinking) but store in eeprom malfunction decision conditions during heating operation, the temperature detected by the indoor pipe temperature sensor is above 60°c. Malfunction caused air short circuit at in...

  • Page 128

    128 16.4.19 h99 (indoor freeze prevention protection: cooling or soft dry) error code will not display (no timer led blinking) but store in eeprom malfunction decision conditions freeze prevention control takes place (when indoor pipe temperature is lower than 2°c) malfunction caused air short circu...

  • Page 129

    129 16.4.20 f11 (4-way valve abnormality) malfunction decision conditions when heating operation, when indoor pipe temperature is below 10°c when cooling operation, when indoor pipe temperature is above 45°c malfunction caused connector in poor contact faulty sensor faulty outdoor unit pcb 4-way val...

  • Page 130

    130 16.4.21 f17 (indoor standby units freezing abnormality) malfunction decision conditions when the different between indoor intake air temperature and indoor pipe temperature is above 10°c or indoor pipe temperature is below -1.0°c remark: when the indoor standby unit is freezing, the outdoor unit...

  • Page 131

    131 16.4.22 f90 (power factor correction protection) malfunction decision conditions during startup and operation of cooling and heating, when power factor correction (pfc) protection circuitry at the outdoor unit main pcb senses abnormal high dc voltage level. Malfunction caused dc voltage peak due...

  • Page 132

    132 16.4.23 f91 (refrigeration cycle abnormality) malfunction decision conditions during cooling, compressor frequency = fcmax. During heating, compressor frequency > fhrated. During cooling and heating operation, running current: 0.65a during cooling, indoor intake - indoor pipe during heating, ind...

  • Page 133

    133 16.4.24 f93 (compressor rotation failure) malfunction decision conditions a compressor rotation failure is detected by checking the compressor running condition through the position detection circuit. Malfunction caused compressor terminal disconnect faulty outdoor pcb faulty compressor troubles...

  • Page 134

    134 16.4.25 f95 (cooling high pressure abnormality) malfunction decision conditions during operation of cooling, when outdoor unit heat exchanger high temperature data (61°c) is detected by the outdoor pipe temperature sensor. Malfunction caused air short circuit at indoor unit dust accumulation on ...

  • Page 135

    135 16.4.26 f96 (ipm overheating) malfunction decision conditions during operating of cooling and heating, when ipm temperature data (100°c) is detected by the ipm temperature sensor. Multi models only o compressor overheating: during operation of cooling and heating, when the compressor ol is activ...

  • Page 136

    136 16.4.27 f97 (compressor overheating) malfunction decision conditions during operation of cooling and heating, when compressor tank temperature data (112°c) is detected by the compressor tank temperature sensor. Malfunction caused faulty compressor tank temperature sensor 2/3 way valve closed ref...

  • Page 137

    137 16.4.28 f98 (input over current detection) malfunction decision conditions during operation of cooling and heating, when an input over-current (x value in total running current control) is detected by checking the input current value being detected by current transformer (ct) with the compressor...

  • Page 138

    138 16.4.29 f99 (output over current detection) malfunction decision conditions during operation of cooling and heating, when an output over-current (dc peak current value at ipm prevention control) is detected by checking the current that flows in the inverter dc peak sensing circuitry. Malfunction...

  • Page 139

    139 warning 17. Disassembly and assembly instructions high voltage is generated in the electrical parts area by the capacitor. Ensure that the capacitor has discharged sufficiently before proceeding with repair work. Failure to heed this caution may result in electric shocks. 17.1 cs-e7nk cs-e9nk cs...

  • Page 140

    140 17.1.1.3 to remove discharge grille.

  • Page 141

    141 17.1.1.4 to remove control board 17.1.1.5 to remove cross flow fan and indoor fan motor.

  • Page 142

    142.

  • Page 143

    143 17.2 cs-e18nk cs-e21nk cs-e24nk cs-e28nk 17.2.1 indoor electronic controllers, cross flow fan and indoor fan motor removal procedures 17.2.1.1 to remove front grille 17.2.1.2 to remove horizontal vane.

  • Page 144

    144 17.2.1.3 to remove power electronic controller.

  • Page 145

    145 17.2.1.4 to remove discharge grille 17.2.1.5 to remove control board 17.2.1.6 to remove cross flow fan and indoor fan motor.

  • Page 146

    146.

  • Page 147

    147 17.3 outdoor electronic controller removal procedure 17.3.1 cu-e7nkr cu-e9nkr cu-e12nkr caution! When handling electronic controller, be careful of electrostatic discharge. 1 remove the 5 screws of the top panel. Fig.1 2 remove the 8 screws of the front panel. Fig.2 3 remove the screw of the ter...

  • Page 148

    148 17.3.2 cu-e15nkr cu-e18nkr cu-e21nkr 1 remove the 4 screws of the top panel. Fig.1 2 remove the 10 screws of the front panel. Fig.2 3 remove the top cover of the electronic controller. Fig.3 4 remove the control board. Fig.4 5 remove the 8 screws of the electronic controller. Fig.5 caution! When...

  • Page 149

    149 17.3.3 cu-e24nkr 1 remove the 4 screws of the top panel. Fig.1 2 remove the 10 screws of the front panel. Fig.2 3 remove the top cover of the electronic controller. Fig.3 4 remove the control board. Fig.4 5 remove the 8 screws of the electronic controller. Fig.5 caution! When handling electronic...

  • Page 150: 18. Technical

    150 18. Technical data 18.1 operation characteristics 18.1.1 cu-e7nkr cooling characteristic [condition] indoor temperature: 27/19°c remote condition: high fan speed comp. Hz: f c piping length: 7.5m 16.800 17.300 17.800 18.300 18.800 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 outdoor air tempe...

  • Page 151

    151 piping length characteristic [condition] indoor temperature: 27/19°c, 35/-°c remote condition: high fan speed comp. Hz: f c 2.000 2.050 2.100 2.150 3 4 5 6 7 8 9 10 11 12 13 14 15 piping length (m) c ool in g ca p a c ity ( k w ) 1.100 1.150 1.200 1.250 3 4 5 6 7 8 9 10 11 12 13 14 15 piping len...

  • Page 152

    152 heating characteristic [condition] indoor temperature: 20/-°c remote condition: high fan speed comp. Hz: f h piping length: 7.5m 24.700 26.700 28.700 30.700 32.700 34.700 36.700 38.700 40.700 42.700 44.700 -15 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 13 15 17 19 21 23 25 outdoor air temperature (°c) ...

  • Page 153

    153 piping length characteristic [condition] indoor temperature: 20/-°c, 7/6°c remote condition: high fan speed comp. Hz: f h 2.700 2.720 2.740 2.760 2.780 2.800 3 4 5 6 7 8 9 10 11 12 13 14 15 piping length (m) he a tin g ca p a c ity ( k w ) 2.120 2.130 2.140 2.150 2.160 2.170 2.180 3 4 5 6 7 8 9 ...

  • Page 154

    154 18.1.2 cu-e9nkr cooling characteristic [condition] indoor temperature: 27/19°c remote condition: high fan speed comp. Hz: f c piping length: 7.5m 15.500 16.000 16.500 17.000 17.500 18.000 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 outdoor air temperature (°c) ou tle t a ir t e m p e rat ur ...

  • Page 155

    155 piping length characteristic [condition] indoor temperature: 27/19°c, 35/-°c remote condition: high fan speed comp. Hz: f c 2.540 2.560 2.580 2.600 2.620 3 4 5 6 7 8 9 10 11 12 13 14 15 piping length (m) c ool in g ca p a c ity ( k w ) 1.025 1.030 1.035 1.040 3 4 5 6 7 8 9 10 11 12 13 14 15 pipi...

  • Page 156

    156 heating characteristic [condition] indoor temperature: 20/-°c remote condition: high fan speed comp. Hz: f h piping length: 7.5m 25.600 27.600 29.600 31.600 33.600 35.600 37.600 39.600 41.600 43.600 45.600 -15 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 13 15 17 19 21 23 25 outdoor air temperature (°c) ...

  • Page 157

    157 piping length characteristic [condition] indoor temperature: 20/-°c, 7/6°c remote condition: high fan speed comp. Hz: f h 3.350 3.400 3.450 3.500 3.550 3.600 3 4 5 6 7 8 9 10 11 12 13 14 15 piping length (m) he a tin g ca p a c ity ( k w ) 2.250 2.270 2.290 2.310 2.330 2.350 2.370 2.390 3 4 5 6 ...

  • Page 158

    158 18.1.3 cu-e12nkr cooling characteristic [condition] indoor temperature: 27/19°c remote condition: high fan speed comp. Hz: f c piping length: 7.5m 14.500 15.000 15.500 16.000 16.500 17.000 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 outdoor air temperature (°c) ou tle t a ir t e m p e rat ur...

  • Page 159

    159 piping length characteristic [condition] indoor temperature: 27/19°c, 35/-°c remote condition: high fan speed comp. Hz: f c 3.420 3.440 3.460 3.480 3.500 3.520 3 4 5 6 7 8 9 10 11 12 13 14 15 piping length (m) c ool in g ca p a c ity ( k w ) 0.964 0.966 0.968 0.970 0.972 0.974 3 4 5 6 7 8 9 10 1...

  • Page 160

    160 heating characteristic [condition] indoor temperature: 20/-°c remote condition: high fan speed comp. Hz: f h piping length: 7.5m 28.800 30.800 32.800 34.800 36.800 38.800 40.800 42.800 44.800 46.800 48.800 50.800 -15 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 13 15 17 19 21 23 25 outdoor air temperatur...

  • Page 161

    161 piping length characteristic [condition] indoor temperature: 20/-°c, 7/6°c remote condition: high fan speed comp. Hz: f h 4.600 4.650 4.700 4.750 4.800 4.850 4.900 3 4 5 6 7 8 9 10 11 12 13 14 15 piping length (m) he a tin g ca p a c ity ( k w ) 2.550 2.600 2.650 2.700 2.750 3 4 5 6 7 8 9 10 11 ...

  • Page 162

    162 18.1.4 cu-e15nkr cooling characteristic [condition] indoor temperature: 27/19°c remote condition: high fan speed comp. Hz: f c piping length: 5m 12.300 12.800 13.300 13.800 14.300 14.800 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 outdoor air temperature (°c) ou tle t a ir t e m p e rat ur e...

  • Page 163

    163 piping length characteristic [condition] indoor temperature: 27/19°c, 35/-°c remote condition: high fan speed comp. Hz: f c 4.100 4.200 4.300 4.400 4.500 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 piping length (m) c ool in g ca p a c ity ( k w ) 0.890 0.900 0.910 0.920 0.930 0.940 0.950 0.9...

  • Page 164

    164 heating characteristic [condition] indoor temperature: 20/-°c remote condition: high fan speed comp. Hz: f h piping length: 7.5m 33.700 35.700 37.700 39.700 41.700 43.700 45.700 47.700 49.700 51.700 53.700 -15 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 13 15 17 19 21 23 25 outdoor air temperature (°c) ...

  • Page 165

    165 piping length characteristic [condition] indoor temperature: 20/-°c, 7/6°c remote condition: high fan speed comp. Hz: f h 4.800 5.000 5.200 5.400 5.600 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 piping length (m) he a tin g ca p a c ity ( k w ) 2.400 2.500 2.600 2.700 2.800 2.900 3 4 5 6 7 8...

  • Page 166

    166 18.1.5 cu-e18nkr cooling characteristic [condition] indoor temperature: 27/19°c remote condition: high fan speed comp. Hz: f c piping length: 5m 13.200 13.700 14.200 14.700 15.200 15.700 16.200 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 outdoor air temperature (°c) ou tle t a ir t e m p e r...

  • Page 167

    167 piping length characteristic [condition] indoor temperature: 27/19°c, 35/-°c remote condition: high fan speed comp. Hz: f c 4.700 4.800 4.900 5.000 5.100 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 piping length (m) c ool in g ca p a c ity ( k w ) 0.890 0.900 0.910 0.920 0.930 0.940 0.950 0.9...

  • Page 168

    168 heating characteristic [condition] indoor temperature: 20/-°c remote condition: high fan speed comp. Hz: f h piping length: 7.5m 33.400 35.400 37.400 39.400 41.400 43.400 45.400 47.400 49.400 51.400 53.400 -15 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 13 15 17 19 21 23 25 outdoor air temperature (°c) ...

  • Page 169

    169 piping length characteristic [condition] indoor temperature: 20/-°c, 7/6°c remote condition: high fan speed comp. Hz: f h 5.600 5.800 6.000 6.200 6.400 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 piping length (m) he a tin g ca p a c ity ( k w ) 2.300 2.400 2.500 2.600 2.700 3 4 5 6 7 8 9 10 ...

  • Page 170

    170 18.1.6 cu-e21nkr cooling characteristic [condition] indoor temperature: 27/19°c remote condition: high fan speed comp. Hz: f c piping length: 5m 11.800 12.300 12.800 13.300 13.800 14.300 14.800 15.300 15.800 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 outdoor air temperature (°c) ou tle t a ...

  • Page 171

    171 piping length characteristic [condition] indoor temperature: 27/19°c, 35/-°c remote condition: high fan speed comp. Hz: f c 6.100 6.200 6.300 6.400 6.500 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 piping length (m) c ool in g ca p a c ity ( k w ) 0.500 0.600 0.700 0.800 0.900 3 5 7 9 11 13 15 17 1...

  • Page 172

    172 heating characteristic [condition] indoor temperature: 20/-°c remote condition: high fan speed comp. Hz: f h piping length: 7.5m 34.600 36.600 38.600 40.600 42.600 44.600 46.600 48.600 50.600 52.600 -15 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 13 15 17 19 21 23 25 outdoor air temperature (°c) ou tle ...

  • Page 173

    173 piping length characteristic [condition] indoor temperature: 20/-°c, 7/6°c remote condition: high fan speed comp. Hz: f h 5.200 5.700 6.200 6.700 7.200 7.700 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 piping length (m) he a tin g ca p a c ity ( k w ) 1.800 2.000 2.200 2.400 2.600 2.800 3.000 3 5 7...

  • Page 174

    174 18.1.7 cu-e24nkr cooling characteristic [condition] indoor temperature: 27/19°c remote condition: high fan speed comp. Hz: f c piping length: 5m 10.700 11.200 11.700 12.200 12.700 13.200 13.700 14.200 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 outdoor air temperature (°c) ou tle t a ir t e ...

  • Page 175

    175 piping length characteristic [condition] indoor temperature: 27/19°c, 35/-°c remote condition: high fan speed comp. Hz: f c 6.900 7.000 7.100 7.200 7.300 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 piping length (m) c ool in g ca p a c ity ( k w ) 0.570 0.620 0.670 0.720 0.770 0.820 0.870 0.920 2 4...

  • Page 176

    176 heating characteristic [condition] indoor temperature: 20/-°c remote condition: high fan speed comp. Hz: f h piping length: 5m 35.100 37.100 39.100 41.100 43.100 45.100 47.100 49.100 51.100 53.100 55.100 -15 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 13 15 17 19 21 23 25 outdoor air temperature (°c) ou...

  • Page 177

    177 piping length characteristic [condition] indoor temperature: 20/-°c, 7/6°c remote condition: high fan speed comp. Hz: f h 5.800 6.300 6.800 7.300 7.800 8.300 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 piping length (m) he a tin g ca p a c ity ( k w ) 1.900 2.100 2.300 2.500 2.700 2.900 3.100 2 4 6...

  • Page 178

    178 18.1.8 cu-e28nkr cooling characteristic [condition] indoor temperature: 27/19°c remote condition: high fan speed comp. Hz: f c piping length: 5m 10.700 11.200 11.700 12.200 12.700 13.200 13.700 14.200 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 outdoor air temperature (°c) ou tle t a ir t e ...

  • Page 179

    179 piping length characteristic [condition] indoor temperature: 27/19°c, 35/-°c remote condition: high fan speed comp. Hz: f c 7.800 7.900 8.000 8.100 8.200 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 piping length (m) c ool in g ca p a c ity ( k w ) 0.540 0.590 0.640 0.690 0.740 0.790 0.840 2 4 6 8 1...

  • Page 180

    180 heating characteristic [condition] indoor temperature: 20/-°c remote condition: high fan speed comp. Hz: f h piping length: 5m 35.100 37.100 39.100 41.100 43.100 45.100 47.100 49.100 51.100 53.100 55.100 -15 -13 -11 -9 -7 -5 -3 -1 1 3 5 7 9 11 13 15 17 19 21 23 25 outdoor air temperature (°c) ou...

  • Page 181

    181 piping length characteristic [condition] indoor temperature: 20/-°c, 7/6°c remote condition: high fan speed comp. Hz: f h 6.500 7.000 7.500 8.000 8.500 9.000 9.500 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 piping length (m) he a tin g ca p a c ity ( k w ) 2.000 2.200 2.400 2.600 2.800 3.000 3.200...

  • Page 182

    182 18.2 sensible capacity chart cu-e7nkr indoor outdoor temperature (°c db) cu-e7nkr ewb edb 20 25 30 32 %rh °c °c tc shc pi tc shc pi tc shc pi tc shc pi 51.8 14 20 1.99 1.98 0.36 2.01 1.91 0.39 1.95 1.89 0.42 1.91 1.87 0.43 54.1 16 22 2.10 1.95 0.36 2.10 1.88 0.39 2.03 1.86 0.42 1.99 1.86 0.44 50...

  • Page 183

    183 cu-e12nkr indoor outdoor temperature (°c db) cu-e12nkr ewb edb 20 25 30 32 %rh °c °c tc shc pi tc shc pi tc shc pi tc shc pi 51.8 14 20 3.34 2.96 0.64 3.35 2.86 0.70 3.27 2.82 0.76 3.23 2.80 0.78 54.1 16 22 3.54 2.91 0.64 3.50 2.81 0.70 3.42 2.78 0.76 3.36 2.78 0.79 50.0 17 24 3.66 2.94 0.65 3.6...

  • Page 184

    184 cu-e18nkr indoor outdoor temperature (°c db) cu-e18nkr ewb edb 20 25 30 32 %rh °c °c tc shc pi tc shc pi tc shc pi tc shc pi 51.8 14 20 4.99 3.97 1.00 4.83 3.84 1.10 4.66 3.79 1.19 4.59 3.76 1.23 54.1 16 22 5.29 3.91 1.01 5.06 3.78 1.10 4.86 3.74 1.20 4.78 3.73 1.24 50.0 17 24 5.46 3.96 1.02 5.2...

  • Page 185

    185 cu-e24nkr indoor outdoor temperature (°c db) cu-e24nkr ewb edb 20 25 30 32 %rh °c °c tc shc pi tc shc pi tc shc pi tc shc pi 51.8 14 20 6.70 5.28 1.63 6.61 5.11 1.78 6.52 5.03 1.93 6.48 5.00 1.99 54.1 16 22 7.09 5.20 1.64 6.92 5.02 1.79 6.81 4.97 1.94 6.75 4.96 2.00 50.0 17 24 7.33 5.26 1.65 7.1...

  • Page 186

    186 19. Exploded view and replacement parts list 19.1 indoor unit 19.1.1 cs-e7nkr cs-e9nkr cs-e12nkr cs-e15nkr note the above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts..

  • Page 187

    187 ref no. Part name & description qty. Cs-e7nkr cs-e9nkr cs-e12nkr cs-e15nkr remark 1 chassis complete 1 cwd50c1653 ← ← ← 2 fan motor 1 arw7628ac ← ← arw7627ac o 3 cross flow fan complete 1 cwh02c1076 ← ← ← 4 bearing ass’y 1 cwh64k1006 ← ← ← 5 screw - cross flow fan 1 cwh551146 ← ← ← 6 ion generat...

  • Page 188

    188 19.1.2 cs-e18nkr cs-e21nkr cs-e24nkr cs-e28nkr note the above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts..

  • Page 189

    189 ref no. Part name & description qty. Cs-e18nkr cs-e21nkr cs-e24nkr cs-e28nkr remark 1 chassis complete 1 cwd50c1623 ← ← ← 2 fan motor 1 arw7627ac ← ← ← o 3 cross flow fan complete 1 cwh02c1077 ← ← ← 4 bearing ass’y 1 cwh64k1006 ← ← ← 5 screw - cross flow fan 1 cwh551146 ← ← ← 6 ion generator 1 c...

  • Page 190

    190 19.2 outdoor unit 19.2.1 cu-e7nkr cu-e9nkr cu-e12nkr note the above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts..

  • Page 191

    191 ref. No. Description & name qty. Cu-e7nkr cu-e9nkr cu-e12nkr remark 1 base pan ass'y 1 cwd52k1277 ← ← 2 sound proof material 1 cwg302314 cwg302719 ← 3 fan motor bracket 1 cwd541167 ← ← 4 screw - fan motor bracket 2 cwh551217 ← ← 5 fan motor 1 ars6411ac ← ← o 6 screw - fan motor mount 4 cwh55252j...

  • Page 192

    192 19.2.2 cu-e15nkr cu-e18nkr note the above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts..

  • Page 193

    193 ref. No. Description & name qty. Cu-e15nkr cu-e18nkr remark 1 base pan ass'y 1 cwd52k1191 ← 2 anti - vibration bushing 3 cwh50077 ← 3 compressor 1 5rd132xfa21 ← o 4 nut - compressor mount 3 cwh56000j ← 5 sound proof material 1 cwg302629 ← 6 fan motor bracket 1 cwd541126 ← 7 fan motor 1 cwa951620...

  • Page 194

    194 73 shock absorber (left) 1 cwg712880 ← 74 c.C. Case 1 cwg565614 ← (note) all parts are supplied from papamy, malaysia (vendor code: 00029488). “o” marked parts are recommended to be kept in stock..

  • Page 195

    195 19.2.3 cu-e21nkr note the above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts..

  • Page 196

    196 ref. No. Description & name qty. Cu-e21nkr remark 1 base pan ass'y 1 cwd52k1190 2 anti - vibration bushing 3 cwh50055 3 packing 3 cwb81043 4 compressor 1 5kd240xaf21 o 5 nut - compressor mount 3 cwh561049 9 fan motor bracket 1 cwd541126 10 fan motor 1 cwa951671 o 11 screw - fan motor bracket 3 c...

  • Page 197

    197 68 shock absorber (left) 1 cwg712880 69 c.C. Case 1 cwg565614 (note) all parts are supplied from papamy, malaysia (vendor code: 00029488). “o” marked parts are recommended to be kept in stock..

  • Page 198

    198 19.2.4 cu-e24nkr note the above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts..

  • Page 199

    199 ref. No. Description & name qty. Cu-e24nkr remark 1 base pan ass'y 1 cwd52k1190 2 anti - vibration bushing 3 cwh50055 3 packing 3 cwb81043 4 compressor 1 5kd240xaf21 o 5 nut - compressor mount 3 cwh561049 9 fan motor bracket 1 cwd541127 10 fan motor 1 ehds80c60ac o 11 screw - fan motor bracket 3...

  • Page 200

    200 67 shock absorber (left) 1 cwg712880 68 c.C. Case 1 cwg565546 (note) all parts are supplied from papamy, malaysia (vendor code: 00029488). “o” marked parts are recommended to be kept in stock..

  • Page 201

    201 19.2.5 cu-e28nkr.

  • Page 202

    202.

  • Page 203

    203 note the above exploded view is for the purpose of parts disassembly and replacement. The non-numbered parts are not kept as standard service parts..

  • Page 204

    204 ref. No. Description & name qty. Cu-e28nkr remark 1 base pan ass'y 1 cwd52k1295 2 compressor 1 5kd240xaf21 o 3 anti - vibration bushing 3 cwh50055 4 nut - compressor mount 3 cwh561049 5 packing 3 cwb811017 6 crankcase heater 1 cwa341080 7 condenser complete 1 cwb32c3300 8 sound proof material 1 ...

  • Page 205

    205 70 shock absorber (left) 1 cwg712854 71 c.C.Case 1 cwg567822 (note) all parts are supplied from papamy, malaysia (vendor code: 00029488). “o” marked parts are recommended to be kept in stock. Printed in malaysia fb0712 - 0