Panasonic CU-4KE24NBU, CS-MKE9NB4U, CU-4KE31NBU, CU-3KE19NBU, CS-MKE12NB4U, CS-KE18NB4UW Fan

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Sensor

A temperature sensor inside the remote controller senses the room temperature.

ON/OFF operation button

This button is for turning the air conditioner on and off.

1 HR. TIMER button (1-HOUR OFF TIMER)

: When you press this button, regardless of whether the unit is operating or stopping, the unit operates for one hour and then shuts down.

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 select AUTO, HEAT, DRY, COOL or FAN mode.

(AUTO)

: When this setting is selected, the air conditioner

 

calculates the difference between the thermostat setting

 

and the room temperature and automatically switches to

 

the ‘‘COOL’’ or ‘‘HEAT’’ mode as appropriate except at “M”

 

of the S/M switch.

(HEAT)

: The air conditioner makes the room warmer.

(DRY)

: The air conditioner reduces the humidity in the room.

(COOL)

: The air conditioner makes the room cooler.

(FAN)

: The air conditioner works only as a circulation fan except

 

at “M” of the S/M switch.

NIGHT SETBACK button

For details, see “5. Night Setback Mode”. When you press this button in the

HEAT, DRY or COOL mode, the mark appears in the display, and the remote controller will automatically adjust the set temperature to save energy.

CLOCK button

Time display selector button

This switches the time display between 24-hour time and 12-hour time.

ACL button (ALL CLEAR)

Puts the remote controller into pre-operation status. Always press this button after replacing the batteries and setting the S/M switch.

NOTE

(Cover closed)

The illustration above pictures the remote controller after the cover has been opened.

The remote controller sends the temperature signal to the air conditioner regularly at five minute intervals. If the signal from the remote controller stops for more than 15 minutes due to the loss of the remote controller or other trouble, the air conditioner will switch to the temperature sensor which is built into the indoor unit and control the room temperature. In these cases, the temperature around the remote controller may differ from the temperature detected at the air conditioner’s position.

The indoor fan runs continuously when the system is in normal operation. It does not turn off when the desired room temperature is reached. If Night Set Back mode is selected, the fan will turn off intermittently during cooling operation in order to control air flow.

7

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Contents 17,500BTU / h 11,900BTU / hSafety Precautions Prohibit Table of Contents CZ-RD515U Applicable MULTI-OUTDOOR Units Operating Range Temperature Indoor Air Intake Temp Outdoor Air Intake TempIndoor Unit CS-MKE9NB4U & CZ-18BT1U SpecificationsUnit Specifications 208V Indoor UnitIndoor Unit CS-MKE12NB4U & CZ-18BT1U CS-MKE12NB4U & CZ-18BT1U Indoor Unit CS-KE18NB4UW & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U Indoor Unit Major Component SpecificationsIndoor Unit Body CS-MKE9NB4U Indoor Unit Panel CZ-18BT1UCB-CS-MKE12NB4U Indoor Unit Body CS-MKE12NB4UCB-CS-KE18NB4U Indoor Unit Body CS-KE18NB4UWCS-MKE12NB4U & CZ-18BT1U CS-KE18NB4UW & CZ-18BT1U Other Component SpecificationsView Dimensional DataIndoor Unit CS-KE18NB4UW & CZ-18BT1U Indoor unit Refrigerant Flow DiagramElectrical Data Electric Wiring DiagramsDisassembly Procedure MaintenanceDisconnect the connectors in the control box Remove the air intake grillRemove the ceiling panel Remove the power box and control box Remove the indoor air temperature sensorScrew Ground cable CN07 CN03 CN09 CN06 Remove the main body lower section Remove the heat exchanger sensor Remove the drain pump and float switchRemove the heat exchanger Remove the turbo fan and fan motorOperation Functions FunctionsEmergency operation Auto cooling/heating operationLamp colors Timer backupOverload prevention during heating Protective FunctionsFreeze prevention Cold-air prevention during heatingMethod of Self-Diagnostics Troubleshooting Before Calling for ServicePrecautions before Performing Inspection or Repair Indoor Unit Self-diagnostics LampsChecking the Indoor and Outdoor Units Using the TEST/T-RUN terminalsReplace the controller Replace the circuit board or the fuseOff Blinking Illuminated Serial Communication Error Identification ProcedureBefore the Operation Condition E01From the previous page a Condition E12 Indoor Fan Motor Trouble Diagnosis of Fan MotorNoise malfunction Noise Malfunction and Electromagnetic InterferenceElectromagnetic interference Locations most susceptible to noise Trouble CorrectionPage CS-MKE9NB4U & CZ-18BT1U CS-MKE12NB4U & CZ-18BT1U Appendix aCeiling Panel CZ-18BT1UModel No Indoor Units Contents FeaturesSafety Precautions Product InformationSafety Instructions Installation LocationElectrical Requirements AvoidUnit Display and Operation Button Names of PartsSymbols Remote Controller DisplayRemote Controller Temperature setting buttons Temp HR. Timer button 1-HOUR OFF TimerMode selector button SensorSingle/Multiple switch Using the Remote ControllerAutomatic Operation Operation with the Remote ControllerManual Operation StepHigh Power Mode Adjusting the Fan SpeedNight Setback Mode Special Remarks Setting the TimerHow to set the on time How to set the OFF timeHow to set daily ON/OFF repeat timer 1030 pm 710 am 1100 am Present timeAdjusting the Airflow Direction Using the 1-HOUR OFF TimerHour OFF Timer Operation together with the daily ON/OFF repeat timerWhen the air conditioner is not running Care and CleaningCleaning the flaps Cleaning the main unit and Remote ControllerHow to remove the air intake grille How to remove the filterAir filter Care After a prolonged idle periodOperating Range TroubleshootingWired Remote Controller Model No Indoor Unit SpecificationsModel No Outdoor Unit Model No Ceiling PanelCS-KE18NB4UW & CZ-18BT1U Appendix BCU-KE12NK1 CS-KE12NB41CS-KE18NB4UW CU-KE18NKU CZ-18BT1UFan Only Installation Location DRY orange, Cool green and FAN green Remote Controller Display Remote Controller FAN Using the Remote Controller Operation with the Remote Controller Fan Only Special Remarks How to set the OFF time Sweep Cool Drysweep FAN Heat Care and Cleaning Air filter Max Min For Single use For Multiple Use Model No Outdoor Unit Indoor Unit For Single useCS-KE12NB41 Model No Ceiling Panel CZ-18BT1UFor Multiple use Page 852-6-4190-585-00-1 For Indoor Unit ContentsPlease Read Before Starting Others When ServicingAccessories Supplied with Unit Table Tools Required for Installation not suppliedGeneral Optional Copper Tubing KitAdditional Materials Required for Installation Installation Site SelectionIndoor Unit  direct sunlightEmbedding the Tubing and Wiring Preparation for Suspending How to Install the Indoor UnitSuspending the Indoor Unit Placing the Unit Inside the Ceiling Attach so that the hose band Installing the Drain PipingFastener is on the side Drain port10a Checking the DrainageIndoor unit Gaps Ceiling surface Ceiling panel Installing the Ceiling PanelAttaching the air-intake grille Wiring the Ceiling Panel and the IndicatorWhen Removing the Ceiling Panel for Servicing Checking After InstallationAdjusting the Auto Flap Wiring Instructions General precautions on wiring For stranded wiring How to connect wiring to the terminal For Indoor UnitFor Outdoor Unit  For solid core wiring or F-cable How to Test Run the Air Conditioner Rear side Remote control holder Remote Controller Installation PositionTo take out the remote controller, pull it forward Mounting on a WallAddress Setting of the Remote Controller Address SwitchInstallation Check Sheet Connecting a Home Automation DeviceCZ-RD515U Appendix DModel No. CZ-RD515U Operating Instructions Wired Remote ControllerAutomatic Switching between Cooling and Heating Installation Location SET button Timer and Present Time setting buttonsTimer Select button Remote Controller Display Automatic Operation Only for COOL/DRY/HEAT Model Heating Mode Only for COOL/DRY/HEAT Model Remote Controller DisplayProgrammed Backup functionDaily on / OFF 910 pm 710 am 1130 pm Present timeUsing the 1-HOUR OFF Timer Page Appendix E Installation Instructions CZ-RD515U Remote controller installation guidelines Parts supplied with the remote controllerHow to install the remote controller Installation locationInstalling directly onto the wall Installing with in-wall junction boxHow to wire the remote controller WI1011-0 Page DC1111-0
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CZ-18BT1U, CS-KE18NB4UW, CS-MKE12NB4U, CU-3KE19NBU, CU-4KE24NBU specifications

The Panasonic CS-KE18NB4UW and CU-KE12NK1, along with the CS-KE12NB41, CZ-18BT1U, and CU-KE18NKU, represent a suite of advanced air conditioning solutions built with cutting-edge technologies designed to provide optimal comfort, energy efficiency, and air quality in various settings.

One of the standout features of this lineup is the inverter technology. Inverter air conditioners adjust the compressor speed to maintain the desired temperature efficiently. This leads to significant energy savings compared to traditional air conditioners, which tend to frequently cycle on and off, consuming more power. By continuously regulating the temperature, the Panasonic units not only save electricity but also prolong the lifespan of the compressor.

Another noteworthy characteristic is the nanoe™ technology integrated into some of these models. Nanoe™ technology uses hydroxyl radicals to purify the air, minimizing harmful bacteria and allergens. This makes the Panasonic units particularly suitable for users with allergies or respiratory issues, providing a cleaner and healthier indoor environment.

In terms of design, these models are sleek and compact, allowing them to fit seamlessly into any room decor, whether in a home, office, or commercial space. The quiet operation is another advantage, making them ideal for bedrooms and study areas where minimal noise is essential.

Furthermore, the CS-KE18NB4UW and CU-KE12NK1 offer a range of powerful cooling and heating capacities, making them versatile solutions for various climate conditions. The cold climate performance ensures consistent heating in colder regions, while the robust cooling capabilities make them perfect for hot summer months.

The user-friendly features include a smart remote control system, allowing users to adjust settings with ease from a distance. Some models are equipped with Wi-Fi capability, enabling integration with smart home systems for enhanced control and programmability.

In conclusion, the Panasonic CS-KE18NB4UW, CU-KE12NK1, CS-KE12NB41, CZ-18BT1U, and CU-KE18NKU air conditioning units exemplify innovation and efficiency. With their inverter technology, air purification features, compact designs, and smart functionalities, they stand out as ideal choices for maintaining comfortable and healthy indoor environments throughout the year.