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Panasonic CS-MKS12NKU Technical & Service Manual

Other manuals for CS-MKS12NKU: Information, Submittal Data

Summary of CS-MKS12NKU

  • Page 1

    Cu-3ks19nbu (3-room multi unit) cu-4ks24nbu (4-room multi unit) cu-4ks31nbu (4-room multi unit) indoor unit : cs-mks7nku cs-mks9nku cs-mks12nku cs-mks18nku cs-mks24nku dc inverter multi-system air conditioner wall mounted type indoor unit cs-mks7nku cs-mks9nku cs-mks12nku cs-mks18nku cs-mks24nku ref...

  • Page 2: Safety Precautions

    • before doing repair work, please read the " safety precautions" carefully and fully understand them. • the precautionary items here are divided into " warning" and " caution" items. Items in particular which may cause death or serious injury to the service personnel if the work is not performed co...

  • Page 3

    Warning if refrigerant gas blows off during the work, do not touch the refrigerant gas as it may cause frostbite. If refrigerant gas leaks during the work, ventilate the room. If refrigerant gas catches fire, harmful gas may be generated. Do not mix any gas other than the specified refrigerant gas i...

  • Page 4: Table of Contents

    Table of contents safety precautions table of contents applicable multi-outdoor units 1. Operating range 2. Specifications 2-1. Unit specifications 2-2. Major component specifications 2-3. Other component specifications 3. Dimensional data 4. Refrigerant flow diagram 4-1. Refrigerant flow diagram 5....

  • Page 5

    Applicable multi-outdoor units cs-mks7nku cs-mks9nku cs-mks12nku cs-mks18nku cs-mks24nku 3-room cu-3ks19nbu yes yes yes yes no 4-room cu-4ks24nbu yes yes yes yes yes 4-room cu-4ks31nbu yes yes yes yes yes indoor unit multi-outdoor unit 5.

  • Page 6: 1.  Operating Range

    1. Operating range combination with cooling outdoor unit cu-3ks19nbu, cu-4ks24nbu or cu-4ks31nbu 95 °f db / 71 °f wb 67 °f db / 57 °f wb maximum minimum 115 °f db 14 °f db temperature indoor air intake temp. Outdoor air intake temp. Cooling 6.

  • Page 7: 2.  Specifications

    2. Specifications 2-1. Unit specifications indoor unit cs-mks7nku data subject to change without notice. Vertical db-a indoor : hi/me/lo/qt* air filter refrigerant 0.11 25 7,500 2.20 shipping volume cooling 241 (410) / 224 (381) / 212 (360) 2.77 cooling depth net shipping package dimensions weight w...

  • Page 8

    Indoor unit cs-mks7nku data subject to change without notice. Vertical db-a indoor : hi/me/lo/qt* air filter refrigerant 0.12 25 7,500 2.20 shipping volume cooling 241 (410) / 224 (381) / 212 (360) 2.77 cooling depth net shipping package dimensions weight width depth height width inch (mm) ib. (kg) ...

  • Page 9

    Indoor unit cs-mks9nku data subject to change without notice. Vertical db-a indoor : hi/me/lo/qt* air filter refrigerant 0.15 35 9,000 2.65 shipping volume cooling 259 (440) / 241 (410) / 212 (360) 3.4 cooling depth net shipping package dimensions weight width depth height width inch (mm) ib. (kg) i...

  • Page 10

    Indoor unit cs-mks9nku data subject to change without notice. Vertical db-a indoor : hi/me/lo/qt* air filter refrigerant 0.17 35 9,000 2.65 shipping volume cooling 259 (440) / 241 (410) / 212 (360) 3.4 cooling depth net shipping package dimensions weight width depth height width inch (mm) ib. (kg) i...

  • Page 11

    Indoor unit cs-mks12nku data subject to change without notice. Vertical db-a indoor : hi/me/lo/qt* air filter refrigerant 0.15 35 11,900 3.50 shipping volume cooling 282 (479) / 259 (440) / 218 (370) 4.26 cooling depth net shipping package dimensions weight width depth height width inch (mm) ib. (kg...

  • Page 12

    Indoor unit cs-mks12nku data subject to change without notice. Vertical db-a indoor : hi/me/lo/qt* air filter refrigerant 0.17 35 11,900 3.50 shipping volume cooling 282 (479) / 259 (440) / 218 (370) 4.26 cooling depth net shipping package dimensions weight width depth height width inch (mm) ib. (kg...

  • Page 13

    Indoor unit cs-mks18nku data subject to change without notice. Vertical db-a indoor : hi/me/lo/qt* air filter refrigerant 0.15 35 17,500 5.15 shipping volume cooling 500 (850) / 447 (760) / 377 (641) 4.89 cooling depth net shipping package dimensions weight width depth height width inch (mm) ib. (kg...

  • Page 14

    Indoor unit cs-mks18nku data subject to change without notice. Vertical db-a indoor : hi/me/lo/qt* air filter refrigerant 0.17 35 17,500 5.15 shipping volume cooling 500 (850) / 447 (760) / 377 (641) 4.89 cooling depth net shipping package dimensions weight width depth height width inch (mm) ib. (kg...

  • Page 15

    Indoor unit cs-mks24nku data subject to change without notice. Vertical db-a indoor : hi/me/lo/qt* air filter refrigerant 0.20 45 24,200 7.10 shipping volume cooling 541 (919) / 500 (850) / 435 (739) 4.89 cooling depth net shipping package dimensions weight width depth height width inch (mm) ib. (kg...

  • Page 16

    Indoor unit cs-mks24nku data subject to change without notice. Vertical db-a indoor : hi/me/lo/qt* air filter refrigerant 0.22 45 24,200 7.10 shipping volume cooling 541 (919) / 500 (850) / 435 (739) 4.89 cooling depth net shipping package dimensions weight width depth height width inch (mm) ib. (kg...

  • Page 17

    2-2. Major component specifications 2-2-1. Indoor unit indoor unit cs-mks7nku (ambient temp. 77 °f (25 °c)) rating dc 12v coil resistance ohm each pair of terminal : 400 +/- 7% flap motor type stepping motor model mp24z3 aluminum plate fin / copper tube 2 19.5 2.02 (0.188) face area coil rows fins p...

  • Page 18

    Indoor unit cs-mks9nku (ambient temp. 77 °f (25 °c)) rating dc 12v coil resistance ohm each pair of terminal : 400 +/- 7% flap motor type stepping motor model mp24z3 aluminum plate fin / copper tube 2 19.5 2.02 (0.188) face area coil rows fins per inch heat exchanger coil ft 2 (m 2 ) data subject to...

  • Page 19

    Indoor unit cs-mks12nku (ambient temp. 77 °f (25 °c)) rating dc 12v coil resistance ohm each pair of terminal : 400 +/- 7% flap motor type stepping motor model mp24z3 aluminum plate fin / copper tube 2 19.5 2.02 (0.188) face area coil rows fins per inch heat exchanger coil ft 2 (m 2 ) data subject t...

  • Page 20

    Indoor unit cs-mks18nku (ambient temp. 77 °f (25 °c)) rating dc 12v coil resistance ohm each pair of terminal : 400 +/- 7% flap motor type stepping motor model mp24z3 aluminum plate fin / copper tube 2 19.5 3.07 (0.285) face area coil rows fins per inch heat exchanger coil ft 2 (m 2 ) data subject t...

  • Page 21

    Indoor unit cs-mks24nku (ambient temp. 77 °f (25 °c)) rating dc 12v coil resistance ohm each pair of terminal : 400 +/- 7% flap motor type stepping motor model mp24z3 aluminum plate fin / copper tube 2 19.5 3.07 (0.285) face area coil rows fins per inch heat exchanger coil ft 2 (m 2 ) data subject t...

  • Page 22

    2-3. Other component specifications indoor air temp sensor ptm-d51h- s3 th2 model no. Of sensor sensor name 1 1 1 quantity of sensor 0 0 ptm-d51h- s3-2 th2 0 0 0 1 1 cs-mks7nku cs-mks9nku cs-mks12nku cs-mks18nku cs-mks24nku cs-mks7nku cs-mks9nku cs-mks12nku cs-mks18nku cs-mks24nku indoor heat exchan...

  • Page 23: 3.  Dimensional Data

    3. Dimensional data indoor unit cs-mks7nku cs-mks9nku cs-mks12nku unit: inch(mm) (852-0-0010-215-00-0) 23.

  • Page 24

    Unit: inch(mm) indoor unit cs-mks18nku cs-mks24nku cs-mks18nku cs-mks24nku (852-0-0010-216-00-0) 24.

  • Page 25

    O.D. 3/8" (9.52 mm) o.D. 1/4" (6.35 mm) o.D. 1/2" (12.7 mm) o.D. 1/4" (6.35 mm) o.D. 5/8" (15.88 mm) o.D. 1/4" (6.35 mm) 4. Refrigerant flow diagram 4-1. Refrigerant flow diagram indoor unit cs-mks7nku cs-mks9nku cs-mks12nku indoor unit cs-mks18nku indoor unit cs-mks24nku indoor heat exchanger cooli...

  • Page 26: 5.  Performance Data

    Horizontal distance (ft.) axis air velocity (ft./sec.) vertical distance (ft.) room air temp. : 80°f (26.7°c) fan speed : high cooling : flap angle 0 ° , : axis air velocity 0 ° : flap angle 30 ° , : axis air velocity 30 ° 5. Performance data 5-1. Air throw distance charts indoor unit cs-mks7nku 0 5...

  • Page 27

    Axis air velocity (ft./sec.) vertical distance (ft.) cooling : flap angle 0 ° , : axis air velocity 0 ° : flap angle 30 ° , : axis air velocity 30 ° indoor unit cs-mks9nku room air temp. : 80°f (26.7°c) fan speed : high horizontal distance (ft.) 0 5 10 15 0 5 10 15 20 25 30 27.

  • Page 28

    Axis air velocity (ft./sec.) vertical distance (ft.) room air temp. : 80°f (26.7°c) fan speed : high cooling : flap angle 0 ° , : axis air velocity 0 ° : flap angle 30 ° , : axis air velocity 30 ° indoor unit cs-mks12nku horizontal distance (ft.) 0 5 10 15 0 5 10 15 20 25 30 28.

  • Page 29

    Axis air velocity (ft./sec.) vertical distance (ft.) room air temp. : 80°f (26.7°c) fan speed : high cooling : flap angle 0 ° , : axis air velocity 0 ° : flap angle 30 ° , : axis air velocity 30 ° indoor unit cs-mks18nku horizontal distance (ft.) 0 5 10 15 0 5 10 15 20 25 30 29.

  • Page 30

    Axis air velocity (ft./sec.) vertical distance (ft.) room air temp. : 80°f (26.7°c) fan speed : high cooling : flap angle 0 ° , : axis air velocity 0 ° : flap angle 30 ° , : axis air velocity 30 ° indoor unit cs-mks24nku horizontal distance (ft.) 0 5 10 15 0 5 10 15 20 25 30 30

  • Page 31: 6.  Electrical Data

    8fa2-5251-11000-2 6. Electrical data 6-1. Electric wiring diagrams indoor unit cs-mks7nku cs-mks9nku cs-mks12nku cs-mks18nku cs-mks24nku controller ind lamp assy 1 2 4 5 1 2 4 3 3 5 1 2 3 10 1 2 3 4 5 4 5 6 7 6 7 8 8 10 1 2 3 10 1 2 3 4 5 4 5 6 7 6 7 8 8 10 lamp 10p (wht) room/coil 4p (wht) flap 5p ...

  • Page 32: 7.  Functions

    7. Functions 7-1. Operation functions emergency operation sensor dry during dry operation, the system adjusts the room temperature and fan speed according to the conditions in the room, in order to maintain a comfortable room environment. Sensor dry operation dry operation is as shown in the figure ...

  • Page 33

    High power night setback lamp colors timer backup this function acts to raise the power but keeps the ac system in the same operating mode. This function is set with the high power button on the remote controller. (it can be set regardless of the temperature and fan speed settings.) high power opera...

  • Page 34

    Freeze prevention during cool or dry operation, freezing is detected and operation is stopped when the temperature of the indoor heat exchanger matches the conditions below. 1. Freeze-prevention operation is engaged when the temperature of the indoor heat exchanger is below 43°f(6°c). 2. Restart aft...

  • Page 35

    1hr. Timer button on/off operation button acl (reset) button quiet button test run mode self-diagnostics mode 8. Troubleshooting (before calling for service) 8-1. Precautions before performing inspection or repair note procedure after checking the self-diagnostics monitor, turn the power off before ...

  • Page 36

    Since the indications cover various units, the corresponding parts listed below may not be present in some models. Remote control receiver (1) operation lamp (2) timer lamp (3) quiet lamp operation button indoor unit (1) self-diagnostics lamps indication on indoor unit .... Off code diagnosis conten...

  • Page 37

    (2) if the self-diagnostics function fails to operate check the indoor unit. Is the fuse blown? Replace the controller. Replace the circuit board or the fuse. No indicators illuminate and the indoor fan does not rotate. Check the power voltage. Normal blown 37.

  • Page 38

    8-3. Checking the indoor and outdoor units (1) checking the indoor unit (2) checking the outdoor unit using the test/t-run terminals control no. Check items (unit operation) t-run : test run (compressor and fan motor turn on). Test/mv : compresses time to 1/60th (accelerates operation by 60 times fa...

  • Page 39

    (3) how to identify a serial communication error if the lamps on the main body show the following conditions after the completion of self-diagnosis, a communication error between the indoor unit and outdoor unit might be considered. In such a case, identify the breakdown section by using the followi...

  • Page 40

    (3-2) condition: e12 condition: e12 1. Disconnect the inter-unit wiring on the indoor unit side. 2. Operate the system in test run mode. Then, five minutes later, perform the self-diagnosis. 1. Disconnect the inter-unit wiring on the outdoor unit side. 2. Operate the system in test run mode. Then, f...

  • Page 41

    [trouble symptom 3] motor rotates for some time (several seconds), but then quickly stops, when the indoor unit operates. (there is trouble in the system that provides feedback of motor rotation speed from the motor to the indoor unit controller.) [trouble symptom 4] fan motor rotation speed does no...

  • Page 42

    8-5. Noise malfunction and electromagnetic interference an inverter a/c operates using pulse signal control and high frequencies. Therefore, it is susceptible to the effects of external noise, and is likely to cause electromagnetic interference with nearby wireless devices. A noise filter is install...

  • Page 44: Operating Instructions

    Operating instructions cs-mks7nku cs-mks9nku cs-mks12nku appendix a (852-6-4181-214-00-2) a-1.

  • Page 45: Split System Air Conditioner

    This air conditioner uses the refrigerant r410a. Split system air conditioner model no. Panasonic corporation 1006 kadoma, kadoma city, osaka, japan 85264181214002 indoor units cs-mks7nku cs-mks9nku cs-mks12nku outdoor units cu-3ks19nbu cu-4ks24nbu cu-4ks31nbu operating instructions before operating...

  • Page 46: Features

    2 features this air conditioner is an inverter type unit that automatically adjusts capability as appropriate. Details on these functions are provided below; refer to these descriptions when using the air conditioner. • microprocessor controlled operation the interior compartment of the remote contr...

  • Page 47: Installation Location

    3 installation location • we recommend that this air conditioner be installed properly by qualified installation technicians in accordance with the installation instructions provided with the unit. • before installation, check that the voltage of the electric supply in your home or office is the sam...

  • Page 48

    4 • to prevent possible hazards from insulation failure, the unit must be grounded. • do not clean inside the indoor and outdoor units by users. Engage authorized dealer or specialist for cleaning. • in case of malfunction of this appliance, do not repair by yourself. Contact to the sales dealer or ...

  • Page 49: Names of Parts

    5 names of parts this illustration is based on the external view of a standard model. Consequently, the shape may differ from that of the air conditioner which you have selected. This air conditioner consists of an indoor unit and an outdoor unit. You can control the air conditioner with the remote ...

  • Page 50

    6 unit display and operation button remote control receiver this section picks up infrared signals from the remote controller (transmitter). Operation button when the remote controller cannot be used, pressing this button enables cooling operation. Each time this button is pressed, the operation mod...

  • Page 51: Remote Controller (Display)

    7 remote controller (display) (1) operation mode mild dry .............................. Cool ..................................... Fan ........................................ (2) fan speed automatic operation ............... High ..................................... Medium...........................

  • Page 52: Remote Controller

    8 remote controller the illustration above pictures the remote controller after the cover has been opened. Transmitter when you press the buttons on the remote controller, the mark appears in the display to transmit the setting changes to the receiver in the air conditioner. Sensor a temperature sen...

  • Page 53

    9 remote controller (continued) temperature setting buttons (temp.) press the button to increase the set temperature. Press the button to reduce the set temperature. The temperature setting changes by 1 °c or 2 °f each time one of the temp. Buttons is pressed. Mode selector button use this button to...

  • Page 54: Using The Remote Controller

    10 remote controller (continued) using the remote controller temperature display selector button this switches the temperature display between °c and °f. Time display selector button this switches the time display between 24-hour time and 12-hour time. Acl button (all clear) puts the remote controll...

  • Page 55

    11 using the remote controller (continued) how to use the remote controller when using the remote controller, always point the unit’s transmitter head directly at the air conditioner’s receiver. Remote controller installation position the remote controller may be operated either from a non-fixed pos...

  • Page 56

    12 operation with the remote controller 1. Operation check that the circuit breaker on the power panel is turned on. Press the setting buttons as described below and change the settings as desired. Step 1 press the mode selector button and select the desired mode. For dehumidifying operation o for c...

  • Page 57

    13 operation with the remote controller (continued) • choose the best position in the room for the remote controller, which also acts as the sensor for room comfort and transmits the operating instructions. Once you’ve found this best position, always keep the remote controller there. • this applian...

  • Page 58

    14 operation with the remote controller (continued) 4. Night setback mode night setback mode is used for saving energy. Press the night setback button while unit is operating. The mark appears in the display. To release the night setback function, press the night setback button again. Pressing the m...

  • Page 59

    15 operation with the remote controller (continued) 5. Quiet mode quiet mode is used to reduce the fan sound of the indoor unit. Press the quiet button. The mark appears in the display. To cancel, press quiet button again. • in quiet mode, the fan rotates at a slower speed than the fan speed setting...

  • Page 60: Special Remarks

    16 special remarks how it works? • once the room temperature reaches the level that was set, the unit’s operation frequency is changed automatically. • during dry operation, the fan speed automatically runs at lower speed for providing a comfortable breeze. • ‘‘dry’’ operation is not possible if the...

  • Page 61: Setting The Timer

    17 setting the timer in the descriptions below, the following settings are used for the temperature and time indicator selector button on the bottom front section of the remote controller. • temperature: °f • time: am, pm 1. How to set the present time (example) to set to 10:30 pm. 2. How to set the...

  • Page 62

    18 setting the timer (continued) 3. How to set the on time (example) to start operation at 7:10 am. 4. How to set daily on/off repeat timer (example) to start operation at 7:10 am. And stop the air conditioner at 11:00 am. To cancel a timer program • press the cancel button. • when either an on or o...

  • Page 63: Using The 1-Hour Off Timer

    19 using the 1-hour off timer tips for energy saving 1. 1-hour off timer this function causes the unit to operate for one hour and then stop, regardless of whether the unit is on or off when this button is pressed. The indicator in the display indicates that this function is operating. Setting proce...

  • Page 64

    20 adjusting the airflow direction 1. Horizontal the horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or right. When the humidity is high, the vertical vanes should be in the front position during the cooling or dehumidifying operation. If the vertical vane...

  • Page 65: Care and Cleaning

    21 operation without the remote controller care and cleaning indoor unit if you have lost the remote controller or it has trouble, follow the steps below. When the air conditioner is not running each time the operation button is pressed, the operation mode changes cyclically. The temperature is set ...

  • Page 66

    22 care and cleaning (continued) filter the filter behind the air intake grille should be checked and cleaned at least once every two weeks. How to remove the filter 1. Grasp both ends of the air intake grille, and remove it by opening towards the front and pulling towards you. 2. Remove the filter ...

  • Page 67: Wired Remote Controller

    23 care and cleaning (continued) wired remote controller cleaning the main unit and remote controller • wipe clean using a soft, dry cloth. • to remove stubborn dirt, moisten a cloth in warm water no hotter than 104 °f, wring thoroughly, and then wipe. • the air intake grille can be removed in order...

  • Page 68: Operating Range

    24 troubleshooting (before calling for service) if your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or service center. Operating range the air conditioner is operable within the temperatur...

  • Page 69: Specifications

    25 specifications model no. Indoor unit cs-mks9nku cs-mks7nku single-phase, 208-230 v, 60 hz heating capacity operation sound unit dimensions (h×w×d) (indoor unit : include panel) net weight power source cooling capacity kw btu/h kw btu/h inch(mm) lbs.(kg) cooling operation (h/m/l) heating operation...

  • Page 70: Operating Instructions

    Operating instructions cs-mks18nku cs-mks24nku (852-6-4181-215-00-1) appendix b a-2.

  • Page 71: Operating Instructions

    This air conditioner uses the refrigerant r410a. Split system air conditioner model no. Panasonic corporation 1006 kadoma, kadoma city, osaka, japan 85264181215001 indoor units cs-mks18nku cs-mks24nku outdoor units cu-3ks19nbu cu-4ks24nbu cu-4ks31nbu operating instructions before operating the unit,...

  • Page 72: Features

    2 features this air conditioner is an inverter type unit that automatically adjusts capability as appropriate. Details on these functions are provided below; refer to these descriptions when using the air conditioner. • microprocessor controlled operation the interior compartment of the remote contr...

  • Page 73: Installation Location

    3 installation location • we recommend that this air conditioner be installed properly by qualified installation technicians in accordance with the installation instructions provided with the unit. • before installation, check that the voltage of the electric supply in your home or office is the sam...

  • Page 74

    4 • to prevent possible hazards from insulation failure, the unit must be grounded. • do not clean inside the indoor and outdoor units by users. Engage authorized dealer or specialist for cleaning. • in case of malfunction of this appliance, do not repair by yourself. Contact to the sales dealer or ...

  • Page 75: Names of Parts

    5 names of parts this illustration is based on the external view of a standard model. Consequently, the shape may differ from that of the air conditioner which you have selected. This air conditioner consists of an indoor unit and an outdoor unit. You can control the air conditioner with the remote ...

  • Page 76

    6 unit display and operation button remote control receiver this section picks up infrared signals from the remote controller (transmitter). Operation button when the remote controller cannot be used, pressing this button enables cooling operation. Each time this button is pressed, the operation mod...

  • Page 77: Remote Controller (Display)

    7 remote controller (display) (1) operation mode mild dry .............................. Cool ..................................... Fan ........................................ (2) fan speed automatic operation ............... High ..................................... Medium...........................

  • Page 78: Remote Controller

    8 remote controller the illustration above pictures the remote controller after the cover has been opened. Transmitter when you press the buttons on the remote controller, the mark appears in the display to transmit the setting changes to the receiver in the air conditioner. Sensor a temperature sen...

  • Page 79

    9 remote controller (continued) temperature setting buttons (temp.) press the button to increase the set temperature. Press the button to reduce the set temperature. The temperature setting changes by 1 °c or 2 °f each time one of the temp. Buttons is pressed. Mode selector button use this button to...

  • Page 80: Using The Remote Controller

    10 remote controller (continued) using the remote controller temperature display selector button this switches the temperature display between °c and °f. Time display selector button this switches the time display between 24-hour time and 12-hour time. Acl button (all clear) puts the remote controll...

  • Page 81

    11 using the remote controller (continued) how to use the remote controller when using the remote controller, always point the unit’s transmitter head directly at the air conditioner’s receiver. Remote controller installation position the remote controller may be operated either from a non-fixed pos...

  • Page 82

    12 operation with the remote controller 1. Operation check that the circuit breaker on the power panel is turned on. Press the setting buttons as described below and change the settings as desired. Step 1 press the mode selector button and select the desired mode. For dehumidifying operation o for c...

  • Page 83

    13 operation with the remote controller (continued) • choose the best position in the room for the remote controller, which also acts as the sensor for room comfort and transmits the operating instructions. Once you’ve found this best position, always keep the remote controller there. • this applian...

  • Page 84

    14 operation with the remote controller (continued) 4. Night setback mode night setback mode is used for saving energy. Press the night setback button while unit is operating. The mark appears in the display. To release the night setback function, press the night setback button again. Pressing the m...

  • Page 85

    15 operation with the remote controller (continued) 5. Quiet mode quiet mode is used to reduce the fan sound of the indoor unit. Press the quiet button. The mark appears in the display. To cancel, press quiet button again. • in quiet mode, the fan rotates at a slower speed than the fan speed setting...

  • Page 86: Special Remarks

    16 special remarks how it works? • once the room temperature reaches the level that was set, the unit’s operation frequency is changed automatically. • during dry operation, the fan speed automatically runs at lower speed for providing a comfortable breeze. • ‘‘dry’’ operation is not possible if the...

  • Page 87: Setting The Timer

    17 setting the timer in the descriptions below, the following settings are used for the temperature and time indicator selector button on the bottom front section of the remote controller. • temperature: °f • time: am, pm 1. How to set the present time (example) to set to 10:30 pm. 2. How to set the...

  • Page 88

    18 setting the timer (continued) 3. How to set the on time (example) to start operation at 7:10 am. 4. How to set daily on/off repeat timer (example) to start operation at 7:10 am. And stop the air conditioner at 11:00 am. To cancel a timer program • press the cancel button. • when either an on or o...

  • Page 89: Using The 1-Hour Off Timer

    19 using the 1-hour off timer tips for energy saving 1. 1-hour off timer this function causes the unit to operate for one hour and then stop, regardless of whether the unit is on or off when this button is pressed. The indicator in the display indicates that this function is operating. Setting proce...

  • Page 90

    20 adjusting the airflow direction 1. Horizontal the horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or right. When the humidity is high, the vertical vanes should be in the front position during the cooling or dehumidifying operation. If the vertical vane...

  • Page 91: Care and Cleaning

    21 operation without the remote controller care and cleaning indoor unit if you have lost the remote controller or it has trouble, follow the steps below. When the air conditioner is not running each time the operation button is pressed, the operation mode changes cyclically. The temperature is set ...

  • Page 92

    22 care and cleaning (continued) filter the filter behind the air intake grille should be checked and cleaned at least once every two weeks. How to remove the filter 1. Grasp both ends of the air intake grille, and remove it by opening towards the front and pulling towards you. 2. Remove the filter ...

  • Page 93: Wired Remote Controller

    23 care and cleaning (continued) wired remote controller cleaning the main unit and remote controller • wipe clean using a soft, dry cloth. • to remove stubborn dirt, moisten a cloth in warm water no hotter than 104 °f, wring thoroughly, and then wipe. • the air intake grille can be removed in order...

  • Page 94: Operating Range

    24 troubleshooting (before calling for service) if your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or service center. Operating range the air conditioner is operable within the temperatur...

  • Page 95: Specifications

    25 specifications model no. Indoor unit single-phase, 208-230 v, 60 hz heating capacity operation sound unit dimensions (h×w×d) (indoor unit : include panel) net weight power source cooling capacity kw btu/h kw btu/h inch(mm) lbs.(kg) cooling operation (h/m/l) heating operation (h/m/l) db(a) db(a) c...

  • Page 96: Installation Instructions

    Installation instructions cs-mks7nku cs-mks9nku cs-mks12nku cs-mks18nku cs-mks24nku appendix c (852-6-4190-580-00-0) a-3.

  • Page 97: Split System Air Conditioner

    For indoor unit this air conditioner uses the refrigerant r410a. External diameter of service port r410a: 5/16" split system air conditioner 85264190580000 2011 installation instructions note cv6233187778 contents page important! Please read before starting .................................. 2 1. Ge...

  • Page 98

    2 important! Please read before starting this air conditioning system meets strict safety and operating standards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. For safe installation and trouble-free op...

  • Page 99

    3 ‡ $sso\uhiuljhudqwoxeulfdqwwrwkhpdwfklqjvxuidfhvri the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leak-free connection. ‡ &khfnfduhixoo\iruohdnvehiruhvwduwlqjwkhwhvwuxq ‡ 'rqrwohdnuhiuljhudqwzklohslslqjzrunirudqlqvwdoodwlrq or re-installation, and...

  • Page 100

    4 1. General this booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning. 1-1. Tools required for installation (not s...

  • Page 101

    5 1-5. Additional materials required for installation 1. Refrigeration (armored) tape 2. Insulated staples or clamps for connecting wire (see local codes.) 3. Putty 4. Refrigeration lubricant 5. Clamps or saddles to secure refrigerant tubing 2. Installation site selection 2-1. Indoor unit avoid: dir...

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    6 install the indoor unit more than 3.3' (1 m) away from any antenna or power lines or connecting wires used for tele- vision, radio, telephone, security system, or intercom. Electrical noise from any of these sources may affect operation. Install in a sturdy manner to avoid increased operating nois...

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    7 set screw only for transportation fig. 6 rear panel marks fig. 7 left tubing right tubing right-rear tubing (recommended) right-downward tubing left-rear tubing left-downward tubing (not applicable for cs-mks18nku, cs-mks24nku) fig. 8 3. How to install the indoor unit 3-1. Remove the rear panel fr...

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    8 indoor side outdoor side hole should be made at a slight downward slant to the outdoor side. Note fig. 10 plastic cover inside outside wall slight angle pvc pipe /rfdoo\sxufkdvhg fig. 12 39&slsh/rfdoo\sxufkdvhg cut at slight angle fig. 11 (4) using a sabre saw, key hole saw or hole-cutting drill a...

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    9 3-4. Removing and installing the grille 3-4-1. Indoor unit types (cs-mks7nku, cs-mks9nku, cs-mks12nku) basically, these models can be installed and wired without removing the grille. If access to any internal part is needed, follow the steps as given below. How to remove the grille (1) grasp both ...

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    10 3-4-2. Indoor unit types (cs-mks18nku, cs-mks24nku) basically, these models can be installed and wired with- out removing the grille. If access to any internal part is needed, follow the steps as given below. How to remove the grille (1) grasp both ends of the air intake grille, and remove it by ...

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    11 3-5. Shape the indoor side tubing (1) arrangement of tubing by directions a) right or left tubing cut out the corner of the right/left frame with a hacksaw or the like. (figs. 20 and 21) b) right-rear or left-rear tubing in this case, the corner of the frame need not be cut. (2) to mount the indo...

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    12 3-7. Wiring instructions for inter-unit connections (1) insert the inter-unit wiring (according to local codes) into the through-the-wall pvc pipe. Run the wiring toward the indoor side allowing approx. 10" (25 cm) to extend from the wall face. (fig. 24) (2) grasp both ends of the air intake gril...

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    13 when connecting each power wire to the corresponding terminal, follow the instructions “how to connect wiring to the terminal” and fasten the wire securely tight with the fixing screw of the terminal plate. How to connect wiring to the terminal a) for indoor unit (1) cut the wire end with a cutti...

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    14 3-8. Mounting (1) to install the indoor unit, mount the indoor unit onto the 2 tabs on the upper part of the rear plate. (2) hold down the air discharge outlet and press the lower part of the indoor unit until it clicks to securely fasten to the 2 tabs on the lower part of the rear plate. (fig. 3...

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    15 hole in wall bent part narrow tube wide tube rear panel fig. 38 drain cap drain hose fig. 39 left-side tubing /hdgwkhwxelqjdqggudlqkrvhwkurxjkwkhzdoo allowing sufficient length for connection. Then bend the tubing using a tube bender to make the attach- ment. (fig. 38) (2) switch the drain hose a...

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    Slant drain hose indoor unit condensation insulation material /rfdoo\sxufkdvhg must be used. 16 to unmount indoor unit press the 2 marks on the lower part of the indoor unit and unlatch the tabs. Then lift the indoor unit and unmount. (fig. 42) 3-9. Drain hose a) the drain hose should be slanted dow...

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    17 4. How to test run the air conditioner after turning on the power of the air conditioner, use the remote controller and follow the steps below to conduct the test run. (1) set the remote controller in test run mode. (fig. 59a) a)press and hold the quiet button and the 1hr. Timer button. E7khqsuhv...

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    18 5. Remote controller installation position the remote controller can be operated from either a non-fixed position or a wall-mounted position. To ensure that the air conditioner operates correctly, do not install the remote controller in the following places: in direct sunlight behind a curtain or...

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    19 6. Address switch 6-1. Address setting of the remote controller the address can be set in order to prevent interference between remote controllers when 2 indoor units are installed near each other. The address is normally set to “a.” to set a different address, it is necessary to change the addre...

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    20 7. Connecting a home automation device the ha (white) 4p terminal is located on the indoor unit pcb. If a ha device will be used, connect it to this terminal. 8. Installation check sheet the strength of the installation location is sufficient to support the air conditioner weight. The indoor and ...

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