Panasonic CS-MKS9NB4U 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-MKS12NB4U & CZ-18BT1UVerticaldB-AIndoor : Hi/Me/LoAir FilterRefrigerant0.111711,9003.5Cooling230V Single-Phase 60Hz187 to 253Refrig

6REMOTE CONTROLLER (DISPLAY)(1) Operation modeAUTO ...(only for COOL/DRY/HEAT Model)HEAT...

7OPERATION WITH THE REMOTE CONTROLLER1. Automatic Operation(only for COOL/DRY/HEAT Model)• Single useThis unit automatically switches between cooling

83. Adjusting the Fan SpeedA. Automatic fan speedSimply set the FAN SPEED selector button to the position.This automatically sets the best fan spee

9SETTING THE TIMER1. How to set the present time(Example) To set to 9:10 pm.2. How to set the OFF time(Example) To stop the air conditioner at 11:30

10USING THE 1-HOUR OFF TIMER1. 1-Hour OFF TimerThis function causes the unit to operate for one hour and then stop, regardless of whether the unit is

A-5INSTALLATION INSTRUCTIONSCZ-RD515U(852-6-4190-592-00-0)APPENDIX E

Parts supplied with the remote controllerSee Table 1.Remote controller installation guidelines Mount the remote controller 3.3 to 4.9 ft. (1 to 1.5me

2A. Installing with in-wall junction box(1) Install the junction box (locally purchased) into the wall.(Figs. 2-a and 3)(2) Pass the wire harness thro

Fig. 8IndicatorWire harnessCeilingpanelTerminal coverClamps7P IND and 4P RCwiring connector5P FLAPwiring connectorClamping strapFLAPRCIND7P4P5P FLAPwi

Indoor Unit CS-MKS12NB4U & CZ-18BT1UVerticaldB-AIndoor : Hi/Me/LoAir FilterRefrigerantCooling208V Single-Phase 60Hz187 to 253Refrigerant Tubing Co

4Fig. 9Fig. 10Fig. 11ON/OFFoperation button1 HR.TIMERbuttonNIGHT SETBACKbuttonACL (Reset)buttonSENSOR buttonOPERATION lampTIMER lampHIGH POWER lampREM

DC1111-0

Indoor Unit CS-KS18NB4UW & CZ-18BT1UVerticaldB-AIndoor : Hi/Me/LoAir FilterRefrigerant0.152217,5005.15Cooling230V Single-Phase 60Hz187 to 253Refri

Indoor Unit CS-KS18NB4UW & CZ-18BT1UVerticaldB-AIndoor : Hi/Me/LoAir FilterRefrigerant0.162217,5005.15Cooling208V Single-Phase 60Hz187 to 253Refri

Indoor Unit (Body) CS-MKS9NB4U2-2. Major Component Specifications2-2-1. Indoor UnitControl PCBControl Circuit Fuse ControlsPart No.Microprocessor250

Indoor Unit (Body) CS-MKS12NB4UControl PCBControl Circuit Fuse ControlsPart No.Microprocessor250V 3ACB-CS-MKS12NB4UIndoor Unit (Panel) CZ-18BT1UMP24ZN

Indoor Unit (Body) CS-KS18NB4UWControl PCBControl Circuit Fuse ControlsPart No.Microprocessor250V 3ACB-CS-KS18NB4UIndoor Unit (Panel) CZ-18BT1UMP24ZN-

2-3. Other Component Specifications Indoor Unit CS-MKS9NB4U & CZ-18BT1U CS-MKS12NB4U & CZ-18BT1U CS-KS18NB4UW & CZ-18BT1U032 50 68 86

3. DIMENSIONAL DATAIndoor Unit CS-MKS9NB4U & CZ-18BT1U CS-MKS12NB4U & CZ-18BT1U CS-KS18NB4UW & CZ-18BT1U6-5/16 6-11/161-3/16 (30)4-19

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)4. REFRIGERANT FLOW DIAGRAM4-1. Refrigerant Flow Dia

SAFETY PRECAUTIONSWarningBefore performing an overhaul, disconnect the power plug or power cable from the unit.Performing the work with the power supp

5. ELECTRICAL DATA5-1. Electric Wiring DiagramsIndoor Unit CS-MKS9NB4U & CZ-18BT1U CS-MKS12NB4U & CZ-18BT1U CS-KS18NB4UW & CZ-18BT1U8

6. MAINTENANCE6-1. Disassembly Procedure6-1-1. Remove the air intake grill.(1) Slide the 2 latches each to the corresponding arrow direction. (Fig.

NOTE6-1-3. Remove the ceiling panel.(1) Open the clamp (4 locations) and remove the 2 lead wires from the clamps. (Fig. 6)(2) Remove the 4 screws fixi

1236-1-4. Remove the indoor air temperature sensor.(1) Disconnect the connector CN08 (ROOM 2P) in the control box and remove the indoor air temperatu

12 3(4) Disconnect the connector CN07 (DP 2P) in the power box. (Fig. 13) Remove a screw and disconnect the ground cable. (Fig. 13)(5) Disconnect the

For the removal of the following components, perform any work after removing the indoor unit (main body) from the ceiling. Main body lower section

6-1-7. Remove the heat exchanger sensor.(1) Remove the heat exchanger sensor from the sensor holder. (Fig. 19) 6-1-8. Remove the drain pump and float

6-1-9. Remove the turbo fan and fan motor.(1) Remove a nut and remove the turbo fan. (Fig. 22)(2) Remove the 2 screws and 3 nuts, and remove the fan m

Emergency operation SENSOR DRY During DRY operation, the system adjusts the room temperature and fan speed according to the conditions in the room, i

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

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

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

< Clock display >Test run modeSelf-diagnostics mode8. TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)8-1. Precautions before Performing Inspectio

Since the indications cover various units, the corresponding parts listed below may not be present in some models.(1) Self-diagnostics Lamps(1) DRA

(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

(3) Serial Communication Error Identification ProcedureRefer to "Method of Self-Diagnostics" for the self-diagnostics procedure.(3-1) Condit

What is the latest self-diagnosis result ?Condition: E12Defect in the outdoor unitP.C. board.Condition: E01Defect or connection errorin the inter-unit

(3-2) Condition: E12Troubleshooting Serial Communication1. Turn off the power and wait until the power lamp (LED) of the outdoor unit controller is t

[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

SAFETY PRECAUTIONSTABLE OF CONTENTS APPLICABLE MULTI-OUTDOOR UNITS1. OPERATING RANGE2. SPECIFICATIONS2-1. Unit Specifications 2-2. Major

Operating InstructionsAPPENDIX A(852-6-4181-216-00-1)CS-MKS9NB4U & CZ-18BT1UCS-MKS12NB4U & CZ-18BT1UA-1

Split System Air ConditionerModel No.Panasonic Corporation1006 Kadoma, Kadoma City, Osaka, Japan85264181216001Indoor UnitsCS-MKS9NB4UCS-MKS12NB4UOutdo

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

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

4NAMES OF PARTSThis illustration is based on the external view of a standard model.Consequently, the shape may differ from that of the air conditioner

5REMOTE CONTROLLER (DISPLAY)(1) Operation modeMILD DRY ...COOL ...FAN ...

6REMOTE CONTROLLERTransmitterWhen you press the buttons on the remote controller, the mark appears in the display to transmit the setting changes to

7SensorA temperature sensor inside the remote controller senses the room temperature.(Cover closed)CLOCK buttonACL button (ALL CLEAR)Puts the remote c

8USING THE REMOTE CONTROLLERHOW TO INSTALL BATTERIES1. Slide the cover in the direction indicated by the arrow and remove it.2. Install two AAA alkali

9OPERATION WITH THE REMOTE CONTROLLER1. Operation 2. Adjusting the Fan SpeedA. Automatic fan speedSimply set the FAN SPEED selector button to the

APPENDIX D Operating Instructions (CZ-RD515U)APPENDIX E INSTALLATION INSTRUCTIONS (CZ-RD515U)...

104. Night Setback ModeNight Setback Mode is used for saving energy.Press the NIGHT SETBACK button while unit is operating. The mark appears in the

111. How to set the present time(Example) To set to 10:30 pm.2. How to set the OFF time(Example) To stop the air conditioner at 11:00 am.3. How to s

12USING THE 1-HOUR OFF TIMER1. 1-Hour OFF TimerThis function causes the unit to operate for one hour and then stop, regardless of whether the unit is

13OPERATION WITHOUT THE REMOTE CONTROLLERIf you have lost the remote controller or it has trouble, follow the steps below.When the air conditioner is

14Air filterThe air filter collects dust and other particles from the air and should be cleaned once every 6 months.If the filter gets blocked, the ef

15TROUBLESHOOTING(BEFORE CALLING FOR SERVICE)If your air conditioner does not work properly, first check the following points before requesting servic

16SPECIFICATIONSinch(mm)Model No.Ceiling PanelCZ-18BT1U6.0(2.7)1-9/16×24-19/32×24-19/32(40×625×625)Unit Dimensions (H×W×D)Net Weight lbs. (kg)Model No

Operating InstructionsCS-KS18NB4UW & CZ-18BT1U(852-6-4181-211-00-1)APPENDIX BA-2

Split System Air ConditionerModel No.Panasonic Corporation1006 Kadoma, Kadoma City, Osaka, Japan85264181211001Indoor UnitsCS-KS12NB41CS-KS18NB4UWOutdo

APPLICABLE MULTI-OUTDOOR UNITSCS-MKS9NB4U & CZ-18BT1UCS-MKS12NB4U & CZ-18BT1UCS-KS18NB4UW & CZ-18BT1U3-RoomCU-3KS19NBUYESYESYES4-RoomC

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

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

4NAMES OF PARTSThis illustration is based on the external view of a standard model.Consequently, the shape may differ from that of the air conditioner

5REMOTE CONTROLLER (DISPLAY)(1) Operation modeMILD DRY ...COOL ...FAN ...

6REMOTE CONTROLLERTransmitterWhen you press the buttons on the remote controller, the mark appears in the display to transmit the setting changes to

7SensorA temperature sensor inside the remote controller senses the room temperature.(Cover closed)CLOCK buttonACL button (ALL CLEAR)Puts the remote c

8USING THE REMOTE CONTROLLERHOW TO INSTALL BATTERIES1. Slide the cover in the direction indicated by the arrow and remove it.2. Install two AAA alkali

9OPERATION WITH THE REMOTE CONTROLLER1. Operation 2. Adjusting the Fan SpeedA. Automatic fan speedSimply set the FAN SPEED selector button to the

104. Night Setback ModeNight Setback Mode is used for saving energy.Press the NIGHT SETBACK button while unit is operating. The mark appears in the

111. How to set the present time(Example) To set to 10:30 pm.2. How to set the OFF time(Example) To stop the air conditioner at 11:00 am.3. How to s

95 °F DB / 71 °F WB67 °F DB / 57 °F WB1. OPERATING RANGEMaximumMinimum115 °F DB14 °F DBTemperature Indoor Air Intake Temp. Outdoor Air Intake Temp.Co

12USING THE 1-HOUR OFF TIMER1. 1-Hour OFF TimerThis function causes the unit to operate for one hour and then stop, regardless of whether the unit is

13OPERATION WITHOUT THE REMOTE CONTROLLERIf you have lost the remote controller or it has trouble, follow the steps below.When the air conditioner is

14Air filterThe air filter collects dust and other particles from the air and should be cleaned once every 6 months.If the filter gets blocked, the ef

15TROUBLESHOOTING(BEFORE CALLING FOR SERVICE)If your air conditioner does not work properly, first check the following points before requesting servic

16SPECIFICATIONSModel No.• For Single use• For Single useHeating CapacityOperationSoundUnit Dimensions (H×W×D)Net WeightPower SourceCooling CapacitykW

17Model No.• For Multiple use• For Multiple useHeating CapacityOperationSoundUnit Dimensions (H×W×D)Net WeightPower SourceCooling CapacitykWBTU/hkWBTU

A-3INSTALLATION INSTRUCTIONSCS-MKS9NB4U & CZ-18BT1UCS-MKS12NB4U & CZ-18BT1UCS-KS18NB4UW & CZ-18BT1UAPPENDIX C(852-6-4190-582-00-0)

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

2. SPECIFICATIONS2-1. Unit SpecificationsIndoor Unit CS-MKS9NB4U & CZ-18BT1U2-1-1.VerticaldB-AIndoor : Hi/Me/LoAir FilterRefrigerant0.1169,0002.

4Printed on container boxFor unit & PVCtube connectionFor drain hoseconnectionRemarksQ'tyFor full-scaleinstallationdiagram1244421For temporar

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

7Hole-in-anchorConcrete InsertSuspension bolt (M10 or 3/8")Hole-in-plug(locally purchased)Fig. 6-123-5/8"(600mm)21-1/32"(534mm)Ceiling

8 In cases where it is necessary to raise the height of thedrain piping, the drain piping can be raised to a maximumheight of 2.78 ft. (850 mm) above

9Amust be within the range of 1/2"(13mm) to 23/32"(18mm). (Fig. 6-11)If not within this range, malfunction or other trouble may occur.Ceilin

10(2) Removing the corner cover andindicator covera) While lightly pressing the cen-ter of the corner cover, pull upthe tab for the screw hole. Usethe

11Fig. 6-23Fig. 6-24 Fig. 6-25fit into the holes in the ceiling panel.Place the corner cover so that the 3 tabsThen fasten it in place with the suppli

123-6-5. Checking After Installation Check that there are no gaps between the unit and the ceiling panel, or between the ceiling panel and the ceili

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-MKS9NB4U & CZ-18BT1UVerticaldB-AIndoor : Hi/Me/LoAir FilterRefrigerantCooling208V Single-Phase 60Hz187 to 253Refrigerant Tubing Con

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

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

16$&/(Reset)button1HR.TIMERbuttonON/OFFoperationbuttonHIGH POWERbutton6. Address Switch6-1. Address Setting of the Remote ControllerThe address

177. 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

Operating InstructionsCZ-RD515U(852-6-4181-230-00-1)APPENDIX DA-4

Wired Remote ControllerModel No.CZ-RD515UOperating InstructionsPanasonic Corporation1006 Kadoma, Kadoma City, Osaka, Japan85264181230001 CV6233187877T

2FEATURES• Microprocessor Controlled OperationThe interior compartment of the remote controller contains several features to facilitate automatic oper

3INSTALLATION LOCATIONWe recommend that this wired remote controller be installed properly by qualified installation technicians in accordance with th

4REMOTE CONTROLLERDisplayInformation on the operating conditions is displayed while the remote controller is switched on. If the unit is turned off, o

5SensorA temperature sensor inside the remote controller senses the room temperature.ON/OFF operation buttonThis button is for turning the air conditi