Panasonic CS-MKS12NKU Service Manual

CU-3KS19NBU (3-room multi unit)CU-4KS24NBU (4-room multi unit)CU-4KS31NBU (4-room multi unit)< Applicable Multi-Outdoor Units >INDOOR UNIT : CS-

Indoor Unit CS-MKS9NKU < 208V >DATA SUBJECT TO CHANGE WITHOUT NOTICE.VerticaldB-AIndoor : Hi/Me/Lo/Qt* Air FilterRefrigerant0.17359,0002.65Shipp

41. GeneralThis booklet briefly outlines where and how to install theair conditioning system. Please read over the entire setof instructions for the

51-5. Additional Materials Required for Installation1. Refrigeration (armored) tape2. Insulated staples or clamps for connecting wire(See local codes

6 install the indoor unit more than 3.3' (1 m) away from anyantenna or power lines or connecting wires used for tele-vision, radio, telephone, s

7Set screw only for transportationFig. 6Rear panelmarksFig. 7Left tubingRighttubingRight-reartubing(recommended)Right-downwardtubingLeft-reartubingLef

8IndoorsideOutdoorsideHole should be made at a slight downward slant to theoutdoor side.NOTEFig. 10Plastic coverINSIDE OUTSIDEWallSlightanglePVC pipe

93-4. Removing and Installing the Grille3-4-1. Indoor unit types (CS-MKS7NKU, CS-MKS9NKU, CS-MKS12NKU)Basically, these models can be installed and wi

103-4-2. Indoor unit types (CS-MKS18NKU, CS-MKS24NKU)Basically, these models can be installed and wired with-out removing the grille. If access to any

113-5. Shape the Indoor Side Tubing(1) Arrangement of tubing by directionsa) Right or left tubingCut out the corner of the right/left frame with ahac

123-7. Wiring Instructions for Inter-unit Connections(1) Insert the inter-unit wiring (according to local codes)into the through-the-wall PVC pipe. R

13When connecting each power wire to the correspondingterminal, follow the instructions “How to connect wiringto the terminal” and fasten the wire sec

Indoor Unit CS-MKS12NKU < 230V >DATA SUBJECT TO CHANGE WITHOUT NOTICE.VerticaldB-AIndoor : Hi/Me/Lo/Qt* Air FilterRefrigerant0.153511,9003.50Shi

143-8. Mounting(1) To install the indoor unit, mount the indoor unit ontothe 2 tabs on the upper part of the rear plate. (2) Hold down the air discha

15Hole in wallBent partNarrow tubeWide tubeRear panelFig. 38Drain capDrain hoseFig. 39 Left-side tubing /HDGWKHWXELQJDQGGUDLQKRVHWKURXJKWKH

SlantDrainhoseIndoorunitCondensationInsulation material/RFDOO\SXUFKDVHGmust be used.16To unmount indoor unitPress the 2 marks on the lower part of

174. How to Test Run the Air ConditionerAfter turning on the power of the air conditioner, use theremote controller and follow the steps below to cond

185. Remote Controller Installation PositionThe remote controller can be operated from either anon-fixed position or a wall-mounted position.To ensur

196. Address Switch6-1. Address Setting of the Remote ControllerThe address can be set in order to prevent interferencebetween remote controllers wh

207. Connecting a Home Automation DeviceThe HA (white) 4P terminal is located on the indoor unit PCB. If a HA device willbe used, connect it to this

DC1111-0

Indoor Unit CS-MKS12NKU < 208V >DATA SUBJECT TO CHANGE WITHOUT NOTICE.VerticaldB-AIndoor : Hi/Me/Lo/Qt* Air FilterRefrigerant0.173511,9003.50Shi

Indoor Unit CS-MKS18NKU < 230V >DATA SUBJECT TO CHANGE WITHOUT NOTICE.VerticaldB-AIndoor : Hi/Me/Lo/Qt* Air FilterRefrigerant0.153517,5005.15Shi

Indoor Unit CS-MKS18NKU < 208V >DATA SUBJECT TO CHANGE WITHOUT NOTICE.VerticaldB-AIndoor : Hi/Me/Lo/Qt* Air FilterRefrigerant0.173517,5005.15Shi

Indoor Unit CS-MKS24NKU < 230V >DATA SUBJECT TO CHANGE WITHOUT NOTICE.VerticaldB-AIndoor : Hi/Me/Lo/Qt* Air FilterRefrigerant0.204524,2007.10Shi

Indoor Unit CS-MKS24NKU < 208V >DATA SUBJECT TO CHANGE WITHOUT NOTICE.VerticaldB-AIndoor : Hi/Me/Lo/Qt* Air FilterRefrigerant0.224524,2007.10Shi

2-2. Major Component Specifications2-2-1. Indoor UnitIndoor Unit CS-MKS7NKU(Ambient Temp. 77 °F (25 °C))Rating DC 12VCoil Resistance Ohm Each Pair o

Indoor Unit CS-MKS9NKU (Ambient Temp. 77 °F (25 °C))Rating DC 12VCoil Resistance Ohm Each Pair of Terminal : 400 +/- 7%Flap MotorType Stepping Motor M

Indoor Unit CS-MKS12NKU(Ambient Temp. 77 °F (25 °C))Rating DC 12VCoil Resistance Ohm Each Pair of Terminal : 400 +/- 7%Flap MotorType Stepping Motor M

• Before doing repair work, please read the " SAFETY PRECAUTIONS" carefully and fully understand them. • The precautionary items here ar

Indoor Unit CS-MKS18NKU(Ambient Temp. 77 °F (25 °C))Rating DC 12VCoil Resistance Ohm Each Pair of Terminal : 400 +/- 7%Flap MotorType Stepping Motor M

Indoor Unit CS-MKS24NKU(Ambient Temp. 77 °F (25 °C))Rating DC 12VCoil Resistance Ohm Each Pair of Terminal : 400 +/- 7%Flap MotorType Stepping Motor M

2-3. Other Component SpecificationsIndoor air temp sensorPTM-D51H-S3 TH2Model No.of sensorSensor Name111Quantity of Sensor00PTM-D51H-S3-2 TH200011CS-

3. DIMENSIONAL DATAIndoor Unit CS-MKS7NKU CS-MKS9NKU CS-MKS12NKUUnit: inch(mm)(852-0-0010-215-00-0)23

Unit: inch(mm)Indoor Unit CS-MKS18NKU CS-MKS24NKU CS-MKS18NKUCS-MKS24NKU (852-0-0010-216-00-0)24

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. R

Horizontal distance (ft.)Axis air velocity (ft./sec.)Vertical distance (ft.)Room air temp. : 80°F (26.7°C)Fan speed : HighCooling : Flap angle 0° ,

Axis air velocity (ft./sec.)Vertical distance (ft.)Cooling : Flap angle 0° , : Axis air velocity 0° : Flap angle 30° , : Axis air velocity 30°Indoo

Axis air velocity (ft./sec.)Vertical distance (ft.)Room air temp. : 80°F (26.7°C)Fan speed : HighCooling : Flap angle 0° , : Axis air velocity 0° :

Axis air velocity (ft./sec.)Vertical distance (ft.)Room air temp. : 80°F (26.7°C)Fan speed : HighCooling : Flap angle 0° , : Axis air velocity 0° :

WarningIf refrigerant gas blows off during the work, do not touch the refrigerant gas as it may cause frostbite.If refrigerant gas leaks during the wo

Axis air velocity (ft./sec.)Vertical distance (ft.)Room air temp. : 80°F (26.7°C)Fan speed : HighCooling : Flap angle 0° , : Axis air velocity 0° :

8FA2-5251-11000-26. ELECTRICAL DATA6-1. Electric Wiring DiagramsIndoor Unit CS-MKS7NKU CS-MKS9NKU CS-MKS12NKU CS-MKS18NKU CS-MKS24NKU CONT

7. FUNCTIONS7-1. Operation FunctionsEmergency operation SENSOR DRYDuring DRY operation, the system adjusts the room temperature and fan speed accord

HIGH POWERNIGHT SETBACKLamp colorsTimer backupThis function acts to raise the power but keeps the AC system in the same operating mode.This function i

Freeze preventionDuring COOL or DRY operation, freezing is detected and operation is stopped when the temperature of the indoor heat exchanger matches

1HR.TIMERbuttonON/OFFoperationbutton ACL(Reset)buttonQUIETbutton< Clock display >Test run modeSelf-diagnostics mode8. TROUBLESHOOTING (BEFORE C

Since the indications cover various units, the corresponding parts listed below may not be present in some models.REMOTE CONTROL receiver(1) OPERAT

(2) If the self-diagnostics function fails to operateCheck the indoor unit.Is the fuse blown?Replace the controller.Replace the circuitboard or the fu

8-3. Checking the Indoor and Outdoor Units(1) Checking the indoor unit(2) Checking the outdoor unit Using the TEST/T-RUN terminalsControlNo. Check ite

(3) How to Identify a Serial Communication ErrorIf the lamps on the main body show the following conditions after the completion of self-diagnosis, a

Table of Contents SAFETY PRECAUTIONSTABLE OF CONTENTS APPLICABLE MULTI-OUTDOOR UNITS1. OPERATING RANGE2. SPECIFICATIONS2-1. Unit Specificatio

(3-2) Condition: E12Condition: E121. Disconnect the inter-unit wiring on the indoorunit side.2. Operate the system in TEST RUN mode. Then,five minutes

[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the indoor unit operates.(There is trouble in the sys

8-5. Noise Malfunction and Electromagnetic InterferenceAn inverter A/C operates using pulse signal control and high frequencies. Therefore, it is sus

Operating InstructionsCS-MKS7NKUCS-MKS9NKUCS-MKS12NKUAPPENDIX A(852-6-4181-214-00-2)A-1

This air conditioner uses the refrigerant R410A.Split System Air ConditionerModel No.Panasonic Corporation1006 Kadoma, Kadoma City, Osaka, Japan852641

2FEATURESThis air conditioner is an inverter type unit that automatically adjusts capability as appropriate. Details on these functionsare provided be

3INSTALLATION LOCATION• We recommend that this air conditioner be installed properly by qualified installation technicians in accordance with the Inst

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

5NAMES OF PARTSThis illustration is based on the external view of a standard model.Consequently, the shape may differ from that of the air conditioner

APPLICABLE MULTI-OUTDOOR UNITSCS-MKS7NKUCS-MKS9NKUCS-MKS12NKUCS-MKS18NKUCS-MKS24NKU 3-RoomCU-3KS19NBUYESYESYESYESNO4-RoomCU-4KS24NBUYESYESYESYESYE

6UNIT DISPLAY AND OPERATION BUTTONREMOTE CONTROL receiver This section picks up infrared signals from the remote controller (transmitter).OPERATION bu

7REMOTE CONTROLLER (DISPLAY)(1) Operation modeMILD DRY ...COOL ...FAN ...

8REMOTE CONTROLLERThe illustration above pictures the remote controller after the cover has been opened.Transmitter When you press the buttons on the

9REMOTE CONTROLLER (CONTINUED)Temperature setting buttons(TEMP.)Press the button to increase the set temperature.Press the button to reduce the se

10REMOTE CONTROLLER (CONTINUED)USING THE REMOTE CONTROLLERTemperature Display SelectorbuttonThis switches the temperature display between °C and °F.Ti

11USING THE REMOTE CONTROLLER (CONTINUED)How to Use the RemoteControllerWhen using the remote controller, always point the unit’s transmitter head dir

12OPERATION WITH THE REMOTE CONTROLLER1. OperationCheck that the circuit breaker on the power panel is turned on.Press the setting buttons as describ

13OPERATION WITH THE REMOTE CONTROLLER (CONTINUED)• Choose the best position in the room for the remote controller, which also acts as the sensor for

14OPERATION WITH THE REMOTE CONTROLLER (CONTINUED)4. Night Setback ModeNight Setback Mode is used for saving energy.Press the NIGHT SETBACK button wh

15OPERATION WITH THE REMOTE CONTROLLER (CONTINUED) 5. QUIET ModeQUIET Mode is used to reduce the fan sound of the indoor unit. Press the QUIE

1. OPERATING RANGECombination with cooling outdoor unit CU-3KS19NBU, CU-4KS24NBU or CU-4KS31NBU95 °F DB / 71 °F WB67 °F DB / 57 °F WBMaximumMinimum11

16SPECIAL REMARKSHow it works? • Once the room temperature reaches the level that was set, the unit’s operation frequency is changed automatically.• D

17SETTING THE TIMERIn the descriptions below, the following settings are used for the temperature and time indicator selector button on the bottom fro

18SETTING 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 st

19USING THE 1-HOUR OFF TIMERTIPS FOR ENERGY SAVING1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop, regardless

20ADJUSTING THE AIRFLOW DIRECTION1. Horizontal The horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or righ

21OPERATION WITHOUT THE REMOTE CONTROLLERCARE AND CLEANINGINDOOR UNIT If you have lost the remote controller or it has trouble, follow the steps below

22CARE AND CLEANING (CONTINUED)Filter The filter behind the air intake grille should be checked and cleaned at least once every two weeks.How to remov

23CARE AND CLEANING (CONTINUED)WIRED REMOTE CONTROLLERCleaning the main unit andRemote Controller• Wipe clean using a soft, dry cloth.• To remove stub

24TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)If your air conditioner does not work properly, first check the following points before requesting servi

25SPECIFICATIONSModel No.Indoor UnitCS-MKS9NKUCS-MKS7NKUSingle-phase, 208-230 V, 60 HzHeating CapacityOperationSoundUnit Dimensions (H×W×D)(Indoor uni

2. SPECIFICATIONS2-1. Unit SpecificationsIndoor Unit CS-MKS7NKU< 230V >DATA SUBJECT TO CHANGE WITHOUT NOTICE.VerticaldB-AIndoor : Hi/Me/Lo/Qt*

Operating InstructionsCS-MKS18NKUCS-MKS24NKU(852-6-4181-215-00-1)APPENDIX BA-2

This air conditioner uses the refrigerant R410A.Split System Air ConditionerModel No.Panasonic Corporation1006 Kadoma, Kadoma City, Osaka, Japan852641

2FEATURESThis air conditioner is an inverter type unit that automatically adjusts capability as appropriate. Details on these functionsare provided be

3INSTALLATION LOCATION• We recommend that this air conditioner be installed properly by qualified installation technicians in accordance with the Inst

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

5NAMES OF PARTSThis illustration is based on the external view of a standard model.Consequently, the shape may differ from that of the air conditioner

6UNIT DISPLAY AND OPERATION BUTTONREMOTE CONTROL receiver This section picks up infrared signals from the remote controller (transmitter).OPERATION bu

7REMOTE CONTROLLER (DISPLAY)(1) Operation modeMILD DRY ...COOL ...FAN ...

8REMOTE CONTROLLERThe illustration above pictures the remote controller after the cover has been opened.Transmitter When you press the buttons on the

9REMOTE CONTROLLER (CONTINUED)Temperature setting buttons(TEMP.)Press the button to increase the set temperature.Press the button to reduce the se

Indoor Unit CS-MKS7NKU< 208V >DATA SUBJECT TO CHANGE WITHOUT NOTICE.VerticaldB-AIndoor : Hi/Me/Lo/Qt* Air FilterRefrigerant0.12257,5002.20Shippi

10REMOTE CONTROLLER (CONTINUED)USING THE REMOTE CONTROLLERTemperature Display SelectorbuttonThis switches the temperature display between °C and °F.Ti

11USING THE REMOTE CONTROLLER (CONTINUED)How to Use the RemoteControllerWhen using the remote controller, always point the unit’s transmitter head dir

12OPERATION WITH THE REMOTE CONTROLLER1. OperationCheck that the circuit breaker on the power panel is turned on.Press the setting buttons as describ

13OPERATION WITH THE REMOTE CONTROLLER (CONTINUED)• Choose the best position in the room for the remote controller, which also acts as the sensor for

14OPERATION WITH THE REMOTE CONTROLLER (CONTINUED)4. Night Setback ModeNight Setback Mode is used for saving energy.Press the NIGHT SETBACK button wh

15OPERATION WITH THE REMOTE CONTROLLER (CONTINUED) 5. QUIET ModeQUIET Mode is used to reduce the fan sound of the indoor unit. Press the QUIE

16SPECIAL REMARKSHow it works? • Once the room temperature reaches the level that was set, the unit’s operation frequency is changed automatically.• D

17SETTING THE TIMERIn the descriptions below, the following settings are used for the temperature and time indicator selector button on the bottom fro

18SETTING 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 st

19USING THE 1-HOUR OFF TIMERTIPS FOR ENERGY SAVING1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop, regardless

Indoor Unit CS-MKS9NKU < 230V >DATA SUBJECT TO CHANGE WITHOUT NOTICE.VerticaldB-AIndoor : Hi/Me/Lo/Qt* Air FilterRefrigerant0.15359,0002.65Shipp

20ADJUSTING THE AIRFLOW DIRECTION1. Horizontal The horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or righ

21OPERATION WITHOUT THE REMOTE CONTROLLERCARE AND CLEANINGINDOOR UNIT If you have lost the remote controller or it has trouble, follow the steps below

22CARE AND CLEANING (CONTINUED)Filter The filter behind the air intake grille should be checked and cleaned at least once every two weeks.How to remov

23CARE AND CLEANING (CONTINUED)WIRED REMOTE CONTROLLERCleaning the main unit andRemote Controller• Wipe clean using a soft, dry cloth.• To remove stub

24TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)If your air conditioner does not work properly, first check the following points before requesting servi

25SPECIFICATIONSModel No.Indoor UnitSingle-phase, 208-230 V, 60 HzHeating CapacityOperationSoundUnit Dimensions (H×W×D)(Indoor unit : Include panel)Ne

INSTALLATION INSTRUCTIONSCS-MKS7NKUCS-MKS9NKUCS-MKS12NKUCS-MKS18NKUCS-MKS24NKUAPPENDIX C(852-6-4190-580-00-0)A-3

For Indoor UnitThis air conditioner uses the refrigerant R410A. External diameter of service port R410A: 5/16" Split System Air Conditioner 85264

2IMPORTANT! Please Read Before StartingThis air conditioning system meets strict safety and operatingstandards. As the installer or service person, it

3 $SSO\UHIULJHUDQWOXEULFDQWWRWKHPDWFKLQJVXUIDFHVRIthe flare and union tubes before connecting them, thentighten the nut with a torque wrench f