Panasonic CS-MKS18NKU Please Read Before Starting, Special Precautions, When Transporting

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Please Read Before Starting

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 operation, you must:

Carefully read this instruction booklet before beginning.

Follow each installation or repair step exactly as shown.

Observe all local, state, and national electrical codes.

Pay close attention to all warning and caution notices given in this manual.

When Transporting

Be careful when picking up and moving the indoor and out- door units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin alu- minum fins on the air conditioner can cut your fingers.

When Installing…

Select an installation location which is rigid and strong enough to support or hold the unit, and select a location for easy maintenance.

…In a Ceiling or Wall

Make sure the ceiling/wall is strong enough to hold the unit’s weight. It may be necessary to construct a strong wood or metal frame to provide added support.

WARNING

CAUTION

This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death.

This symbol refers to a hazard or unsafe practice which can result in personal injury or prod- uct or property damage.

…In a Room

Properly insulate any tubing run inside a room to prevent “sweating” that can cause dripping and water damage to walls and floors.

 

Keep the fire alarm and the air

 

CAUTION

outlet at least 1.5 m away from

the unit.

 

 

 

If Necessary, Get Help

These instructions are all you need for most installation sites and maintenance conditions. If you require help for a special problem, contact our sales/service outlet or your certified dealer for additional instructions.

In Case of Improper Installation

The manufacturer shall in no way be responsible for improp- er installation or maintenance service, including failure to follow the instructions in this document.

SPECIAL PRECAUTIONS

WARNING When Wiring

ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.

‡'RQRWVXSSO\SRZHUWRWKHXQLWXQWLODOOZLULQJDQGWXELQJ are completed or reconnected and checked.

‡+LJKO\GDQJHURXVHOHFWULFDOYROWDJHVDUHXVHGLQWKLV system. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.

‡*URXQGWKHXQLW following local electrical codes.

‡&RQQHFWDOOZLULQJWLJKWO\/RRVHZLULQJPD\FDXVHRYHU heating at connection points and a possible fire hazard.

‡7RSUHYHQWSRVVLEOHKD]DUGVIURPLQVXODWLRQIDLOXUH When TransportingWhen Installing…

the unit must be grounded.

When Connecting Refrigerant Tubing

‡ :KHQSHUIRUPLQJpiping work

 

do not mix air except for speci-

 

fied refrigerant (R410A) in

 

refrigeration cycle. It causes

 

capacity down, and risk of

 

explosion and injury due to

 

high tension inside the refrige-

WARNING

rant cycle.

‡ 5HIULJHUDQWJDVOHDNDJHPD\

 

 

cause fire.

‡'RQRWDGGRUUHSODFHUHIULJHUDQW other than specified type.

It may cause product damage, burst and injury etc.

‡9HQWLODWHWKHURRPZHOOLQWKHHYHQWWKDWUHIULJHUDQW gas leaks during the installation. Be careful not to allow contact of the refrigerant gas with a flame as this will cause the generation of poisonous gas.

‡'RQRWDGGDQ\UHIULJHUDQWDLURUVXEVWDQFHLQWRWKH refrigeration circuit other than the designated refrigerant (R410A). Adding anything other than the specified refrig- erant may cause the pressure to rise excessively in the refrigeration circuit, rupturing the circuit and causing injury or damage.

‡8VHDOOQHZWXELQJDQGIODUHQXWVWRPDNHWKHWXELQJFRQ nections. Using any previous parts (from R22-based sys- tems) may result in damage to the equipment, and may lead to the refrigeration circuit rupturing, causing a seri- ous accident.

2

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Contents TECHNICAL & SERVICE MANUAL INDOOR UNIT CS-MKS7NKU CS-MKS9NKU CS-MKS12NKU CS-MKS18NKUCS-MKS24NKU DC INVERTER MULTI-SYSTEM AIR CONDITIONERSAFETY PRECAUTIONS If refrigerant gas leaks during the work, ventilate the room 4. REFRIGERANT FLOW DIAGRAM Table of Contents2. SPECIFICATIONS 8. TROUBLESHOOTING BEFORE CALLING FOR SERVICEAPPLICABLE MULTI-OUTDOOR UNITS Indoor Air Intake Temp 1. OPERATING RANGETemperature Outdoor Air Intake TempFeatures SPECIFICATIONSUnit Specifications Dimensions & WeightType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType FeaturesDimensions & Weight Voltage RatingType Control PCB 2-2. Major Component Specifications2-2-1. Indoor Unit Fan MotorIndoor Unit CS-MKS9NKU Indoor Unit CS-MKS12NKU Indoor Unit CS-MKS18NKU Indoor Unit CS-MKS24NKU Temperature F C 2-3. Other Component SpecificationsResistance k ohm 3. DIMENSIONAL DATA CS-MKS9NKU CS-MKS12NKUCS-MKS24NKU CS-MKS18NKU4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram5-1. Air Throw Distance Charts 5. PERFORMANCE DATACS-MKS9NKU Room air temp. 80F 26.7C Cooling Cooling Cooling ASSY 6-1. Electric Wiring Diagrams6. ELECTRICAL DATA LAMPEmergency operation 7. FUNCTIONS7-1. Operation Functions SENSOR DRYNIGHT SETBACK HIGH POWERTimer backup Lamp colors7-2. Protective Functions Freeze prevention8-2. Method of Self-Diagnostics 8. TROUBLESHOOTING BEFORE CALLING FOR SERVICE8-1. Precautions before Performing Inspection or Repair PROCEDUREDIAGNOSIS CONTENTS INDOOR UNIT 1 OPERATION lamp 2 TIMER lamp 3 QUIET lampOPERATION button REMOTE CONTROL receiver INDICATION ON INDOOR UNITCheck the power voltage Blown 2 If the self-diagnostics function fails to operateNo indicators illuminate and the indoor fan does not rotate Check the indoor unit Is the fuse blown?8-3. Checking the Indoor and Outdoor Units T-RUN Test run compressor and fan motor turn ON3 How to Identify a Serial Communication Error Timer3-2 Condition E12 8-4. Trouble Diagnosis of Fan Motor 8-4-1. Indoor Fan MotorTrouble 8-5. Noise Malfunction and Electromagnetic InterferenceLocations most susceptible to noise CorrectionPage APPENDIX A Operating Instructions CS-MKS7NKU CS-MKS9NKU CS-MKS12NKUCU-3KS19NBU CU-4KS24NBU CU-4KS31NBU Operating Instructions Split System Air ConditionerCS-MKS7NKU CS-MKS9NKU CS-MKS12NKU Model No Indoor UnitsSAFETY PRECAUTIONS FEATURESCONTENTS PRODUCT INFORMATIONELECTRICAL REQUIREMENTS INSTALLATION LOCATIONSAFETY INSTRUCTIONS Refrigerant gas leakage may cause fire Remote Controller NAMES OF PARTSAir Intakes INDOOR UNIT Air Outlet Remote Controller Drain Hose Refrigerant Tubes OUTDOOR UNIT Air OutletUNIT DISPLAY AND OPERATION BUTTON REMOTE CONTROLLER DISPLAY REMOTE CONTROLLER REMOTE CONTROLLER CONTINUED SWEEPUSING THE REMOTE CONTROLLER USING THE REMOTE CONTROLLER CONTINUED OPERATION WITH THE REMOTE CONTROLLER 1. Operation3. Fan Only OPERATION WITH THE REMOTE CONTROLLER CONTINUED2. Adjusting the Fan Speed In Cooling and DRY Mode and 4. Night Setback ModeSetting Night Setback Mode is used for saving energy6. HIGH POWER Mode 5. QUIET Mode‘‘DRY’’ Operation Remote ControllerSPECIAL REMARKS Cooling OperationSETTING THE TIMER 1. How to set the present timeSETTING THE TIMER CONTINUED REPEAT timerSetting procedure USING THE 1-HOUR OFF TIMERTIPS FOR ENERGY SAVING Cancellation procedureADJUSTING THE AIRFLOW DIRECTION OPERATION WITHOUT THE REMOTE CONTROLLER CARE AND CLEANINGfilter CARE AND CLEANING CONTINUEDHow to remove the filter 1. Grasp both ends of the air Groove Pin Air intake grilleWashing the grille with water WIRED REMOTE CONTROLLERWhen using a footstool or the like, be careful not to let it tip over Trouble TROUBLESHOOTING BEFORE CALLING FOR SERVICEOPERATING RANGE Possible CauseIndoor Unit SPECIFICATIONSModel No Outdoor UnitAPPENDIX B Operating Instructions CS-MKS18NKU CS-MKS24NKUModel No CS-MKS18NKUCS-MKS24NKU Indoor UnitsSAFETY PRECAUTIONS FEATURESCONTENTS Simple One-touch Remote ControllerELECTRICAL REQUIREMENTS INSTALLATION LOCATIONSAFETY INSTRUCTIONS Refrigerant gas leakage may cause fire NAMES OF PARTS Air Intakes INDOOR UNIT Air Outlet Remote Controller Drain HoseRemote Controller Refrigerant Tubes OUTDOOR UNIT Air OutletUNIT DISPLAY AND OPERATION BUTTON REMOTE CONTROLLER DISPLAY REMOTE CONTROLLER REMOTE CONTROLLER CONTINUED USING THE REMOTE CONTROLLER REMOTE CONTROLLER CONTINUEDUSING THE REMOTE CONTROLLER CONTINUED OPERATION WITH THE REMOTE CONTROLLER 1. Operation3. Fan Only OPERATION WITH THE REMOTE CONTROLLER CONTINUED2. Adjusting the Fan Speed OPERATION WITH THE REMOTE CONTROLLER CONTINUED 4. Night Setback Mode5. QUIET Mode OPERATION WITH THE REMOTE CONTROLLER CONTINUED6. HIGH POWER Mode ‘‘DRY’’ Operation Remote ControllerSPECIAL REMARKS Cooling OperationSETTING THE TIMER 1. How to set the present timeSETTING THE TIMER CONTINUED REPEAT timerCancellation procedure USING THE 1-HOUR OFF TIMERSetting procedure 2. Operation together with the DAILY ON/OFF REPEAT TimerADJUSTING THE AIRFLOW DIRECTION OPERATION WITHOUT THE REMOTE CONTROLLER Groove Pin Air intake grille Air intake grille WIRED REMOTE CONTROLLER CARE AND CLEANING CONTINUEDTrouble TROUBLESHOOTING BEFORE CALLING FOR SERVICEOPERATING RANGE Possible CauseIndoor Unit APPENDIX C INSTALLATION INSTRUCTIONS CS-MKS7NKU CS-MKS9NKU CS-MKS12NKU CS-MKS18NKU CS-MKS24NKUNOTE External diameter of service port R410A 5/16 INSTALLATION INSTRUCTIONS Split System Air ConditionerContents For Indoor UnitWhen Installing… SPECIAL PRECAUTIONSWhen Transporting In Case of Improper Installation‡ &KHFNFDUHIXOO\IRUOHDNVEHIRUHVWDUWLQJWKHWHVWUXQ When ServicingOthers 1-2. Accessories Supplied with Unit Table 1. General1-1. Tools Required for Installation not supplied obtaining wire. Also, check2-1. Indoor Unit 2. Installation Site Selection1-5. Additional Materials Required for Installation AVOID2-2. Embedding the Tubing and Wiring 3-1. Remove the Rear Panel from the Unit 3. How to Install the Indoor Unittrical wiring or conduits are 3-2. Make a Holeb If Block, Brick, Concrete or Similar Type Wall 3-3. Install the Rear Panel on the Walla If Wooden Wall Fig. 13a3-4. Removing and Installing the Grille 3-4-1. Indoor unit types Fig. 16a-1 Fig. 16b-1 3-4-2. Indoor unit types CS-MKS18NKU, CS-MKS24NKUFig. 19b-1 Fig. 17a-1 Fig. 17b-13-6. Wiring Instructions General precautions on wiring 3-5. Shape the Indoor Side TubingFig. 26b 3-7. Wiring Instructions for Inter-unit ConnectionsFig. 26a b For Outdoor Unit  For solid core wiring or F-cable WARNING Loose wiring may cause the terminal to overheat or resultHow to connect wiring to the terminal a For Indoor Unit  For stranded wiringFig. 37a 3-8. Mounting Right-side tubing Fig. 37bDrain hose Switching drain hose and drain cap Left-side tubing Drain capTo unmount indoor unit Do not supply power to thetubing and wiring to the out 3-9. Drain HoseFig. 59c 4. How to Test Run the Air ConditionerFig. 59a Fig. 59b 5. Remote Controller Installation Position 6. Address Switch 6-1. Address Setting of the Remote Controller7. Connecting a Home Automation Device 8. Installation Check SheetPage DC1111-0
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CS-MKS18NKU, CS-MKS9NKU, CS-MKS24NKU specifications

The Panasonic CS-MKS7NKU, CS-MKS9NKU, and CS-MKS12NKU are part of Panasonic's reputable air conditioning lineup, designed to provide efficient and comfortable cooling and heating solutions for various spaces. These models are ideal for residential and light commercial use, showcasing a blend of innovative technology and user-friendly features.

One of the main characteristics of these units is their inverter technology, which optimizes energy consumption by adjusting the compressor speed based on the cooling or heating demand. This results in lower energy bills and a more sustainable approach to climate control, aligning with the growing demand for eco-friendly solutions. The inverter operation not only enhances energy efficiency but also contributes to quieter operation compared to traditional systems.

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The CS-MKS series also boasts a sleek and modern design that seamlessly fits into various interior decors while being compact enough for easy installation. They are engineered for whisper-quiet operation, making them suitable for bedrooms, offices, and other quiet spaces, ensuring comfort without the distraction of noise.

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In terms of energy efficiency, all models are rated highly, ensuring that they not only provide comfort but also minimize environmental impact. Their eco-friendly refrigerant further supports sustainable operation, making them a top choice for environmentally conscious consumers.

In summary, the Panasonic CS-MKS7NKU, CS-MKS9NKU, and CS-MKS12NKU are highly efficient air conditioning units that combine inverter technology, advanced air purification, modern design, and smart connectivity. These features make them ideal candidates for anyone looking for reliable, eco-friendly, and user-centric climate control solutions.