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Panasonic CS-MKS9NKU, CS-MKS24NKU, CS-MKS18NKU service manual Refrigerant Flow Diagram

Models: CS-MKS18NKU CS-MKS9NKU CS-MKS24NKU

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4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

Indoor Unit CS-MKS7NKU

CS-MKS9NKU

CS-MKS12NKU

Indoor unit

O.D. 3/8" (9.52 mm)

Indoor heat exchanger

O.D. 1/4" (6.35 mm)	Cooling cycle

Indoor Unit CS-MKS18NKU

Indoor unit

O.D. 1/2" (12.7 mm)

Indoor heat exchanger

O.D. 1/4" (6.35 mm)

Indoor Unit CS-MKS24NKU

Indoor unit

Cooling cycle

O.D. 5/8" (15.88 mm)

Indoor heat exchanger

O.D. 1/4" (6.35 mm)

Cooling cycle

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Panasonic CS-MKS9NKU, CS-MKS24NKU, CS-MKS18NKU service manual Refrigerant Flow Diagram

Contents

CS-MKS24NKU INDOOR UNIT CS-MKS7NKU CS-MKS9NKU CS-MKS12NKU CS-MKS18NKUTECHNICAL & SERVICE MANUAL DC INVERTER MULTI-SYSTEM AIR CONDITIONERSAFETY PRECAUTIONS If refrigerant gas leaks during the work, ventilate the room 2. SPECIFICATIONS Table of Contents4. REFRIGERANT FLOW DIAGRAM 8. TROUBLESHOOTING BEFORE CALLING FOR SERVICEAPPLICABLE MULTI-OUTDOOR UNITS Temperature 1. OPERATING RANGEIndoor Air Intake Temp Outdoor Air Intake TempUnit Specifications SPECIFICATIONSFeatures Dimensions & WeightDimensions & Weight FeaturesType Voltage RatingDimensions & Weight FeaturesType Voltage RatingDimensions & Weight FeaturesType Voltage RatingDimensions & Weight FeaturesType Voltage RatingDimensions & Weight FeaturesType Voltage RatingDimensions & Weight FeaturesType Voltage RatingDimensions & Weight FeaturesType Voltage RatingDimensions & Weight FeaturesType Voltage RatingDimensions & Weight FeaturesType Voltage Rating2-2-1. Indoor Unit 2-2. Major Component SpecificationsControl PCB Fan MotorControl PCB Indoor Unit CS-MKS9NKUFan Motor Flap MotorControl PCB Indoor Unit CS-MKS12NKUFan Motor Flap MotorControl PCB Indoor Unit CS-MKS18NKUFan Motor Flap MotorControl PCB Indoor Unit CS-MKS24NKUFan Motor Flap MotorResistance k ohm 2-3. Other Component SpecificationsTemperature F C Resistance k ohmCS-MKS9NKU CS-MKS12NKU 3. DIMENSIONAL DATACS-MKS18NKU CS-MKS24NKU4-1. Refrigerant Flow Diagram 4. REFRIGERANT FLOW DIAGRAM5. PERFORMANCE DATA 5-1. Air Throw Distance ChartsCooling Indoor UnitCS-MKS9NKU Room air temp. 80F 26.7C Fan speedCooling Cooling Cooling 6. ELECTRICAL DATA 6-1. Electric Wiring DiagramsASSY LAMP7-1. Operation Functions 7. FUNCTIONSEmergency operation SENSOR DRYTimer backup HIGH POWERNIGHT SETBACK Lamp colorsFreeze prevention 7-2. Protective FunctionsNOTE CLxx models only 8-1. Precautions before Performing Inspection or Repair 8. TROUBLESHOOTING BEFORE CALLING FOR SERVICE8-2. Method of Self-Diagnostics PROCEDUREOPERATION button REMOTE CONTROL receiver INDOOR UNIT 1 OPERATION lamp 2 TIMER lamp 3 QUIET lampDIAGNOSIS CONTENTS INDICATION ON INDOOR UNITNo indicators illuminate and the indoor fan does not rotate 2 If the self-diagnostics function fails to operateCheck the power voltage Blown Check the indoor unit Is the fuse blown?T-RUN Test run compressor and fan motor turn ON 8-3. Checking the Indoor and Outdoor UnitsTimer 3 How to Identify a Serial Communication Error3-2 Condition E12 8-4-1. Indoor Fan Motor 8-4. Trouble Diagnosis of Fan MotorLocations most susceptible to noise 8-5. Noise Malfunction and Electromagnetic InterferenceTrouble CorrectionPage CS-MKS7NKU CS-MKS9NKU CS-MKS12NKU APPENDIX A Operating InstructionsCS-MKS7NKU CS-MKS9NKU CS-MKS12NKU Operating Instructions Split System Air ConditionerCU-3KS19NBU CU-4KS24NBU CU-4KS31NBU Model No Indoor UnitsCONTENTS FEATURESSAFETY PRECAUTIONS PRODUCT INFORMATIONSAFETY INSTRUCTIONS INSTALLATION LOCATIONELECTRICAL REQUIREMENTS Refrigerant gas leakage may cause fire Air Intakes INDOOR UNIT Air Outlet Remote Controller Drain Hose NAMES OF PARTSRemote Controller Refrigerant Tubes OUTDOOR UNIT Air OutletUNIT DISPLAY AND OPERATION BUTTON REMOTE CONTROLLER DISPLAY REMOTE CONTROLLER SWEEP REMOTE CONTROLLER CONTINUEDREMOTE CONTROLLER CONTINUED USING THE REMOTE CONTROLLERUSING THE REMOTE CONTROLLER CONTINUED 1. Operation OPERATION WITH THE REMOTE CONTROLLER2. Adjusting the Fan Speed OPERATION WITH THE REMOTE CONTROLLER CONTINUED3. Fan Only OPERATION WITH THE REMOTE CONTROLLER CONTINUED 4. Night Setback ModeSetting In Cooling and DRY Mode and5. QUIET Mode 6. HIGH POWER ModeOPERATION WITH THE REMOTE CONTROLLER CONTINUED SPECIAL REMARKS Remote Controller‘‘DRY’’ Operation Cooling Operation1. How to set the present time SETTING THE TIMERREPEAT timer SETTING THE TIMER CONTINUEDTIPS FOR ENERGY SAVING USING THE 1-HOUR OFF TIMERSetting procedure Cancellation procedureADJUSTING THE AIRFLOW DIRECTION CARE AND CLEANING OPERATION WITHOUT THE REMOTE CONTROLLERHow to remove the filter 1. Grasp both ends of the air CARE AND CLEANING CONTINUEDfilter Groove Pin Air intake grilleCARE AND CLEANING CONTINUED WIRED REMOTE CONTROLLERWhen using a footstool or the like, be careful not to let it tip over Washing the grille with waterOPERATING RANGE TROUBLESHOOTING BEFORE CALLING FOR SERVICETrouble Possible CauseModel No SPECIFICATIONSIndoor Unit CS-MKS7NKUCS-MKS18NKU CS-MKS24NKU APPENDIX B Operating InstructionsCS-MKS24NKU CS-MKS18NKUModel No Indoor UnitsCONTENTS FEATURESSAFETY PRECAUTIONS Simple One-touch Remote ControllerSAFETY INSTRUCTIONS INSTALLATION LOCATIONELECTRICAL REQUIREMENTS Refrigerant gas leakage may cause fire Remote Controller Air Intakes INDOOR UNIT Air Outlet Remote Controller Drain HoseNAMES OF PARTS Refrigerant Tubes OUTDOOR UNIT Air OutletUNIT DISPLAY AND OPERATION BUTTON REMOTE CONTROLLER DISPLAY REMOTE CONTROLLER REMOTE CONTROLLER CONTINUED REMOTE CONTROLLER CONTINUED USING THE REMOTE CONTROLLERUSING THE REMOTE CONTROLLER CONTINUED 1. Operation OPERATION WITH THE REMOTE CONTROLLER2. Adjusting the Fan Speed OPERATION WITH THE REMOTE CONTROLLER CONTINUED3. Fan Only 4. Night Setback Mode OPERATION WITH THE REMOTE CONTROLLER CONTINUED6. HIGH POWER Mode OPERATION WITH THE REMOTE CONTROLLER CONTINUED5. QUIET Mode SPECIAL REMARKS Remote Controller‘‘DRY’’ Operation Cooling Operation1. How to set the present time SETTING THE TIMERREPEAT timer SETTING THE TIMER CONTINUEDSetting procedure USING THE 1-HOUR OFF TIMERCancellation procedure 2. Operation together with the DAILY ON/OFF REPEAT TimerADJUSTING THE AIRFLOW DIRECTION CARE AND CLEANING OPERATION WITHOUT THE REMOTE CONTROLLERHow to remove the filter 1. Grasp both ends of the air CARE AND CLEANING CONTINUEDfilter Groove Pin Air intake grille Air intake grilleCARE AND CLEANING CONTINUED WIRED REMOTE CONTROLLEROPERATING RANGE TROUBLESHOOTING BEFORE CALLING FOR SERVICETrouble Possible CauseModel No SPECIFICATIONSIndoor Unit CS-MKS18NKUCS-MKS7NKU CS-MKS9NKU CS-MKS12NKU CS-MKS18NKU CS-MKS24NKU APPENDIX C INSTALLATION INSTRUCTIONSContents INSTALLATION INSTRUCTIONS Split System Air ConditionerNOTE External diameter of service port R410A 5/16 For Indoor UnitWhen Transporting SPECIAL PRECAUTIONSWhen Installing… In Case of Improper InstallationOthers When Servicing‡ &KHFNFDUHIXOO\IRUOHDNVEHIRUHVWDUWLQJWKHWHVWUXQ 1-1. Tools Required for Installation not supplied 1. General1-2. Accessories Supplied with Unit Table obtaining wire. Also, check1-5. Additional Materials Required for Installation 2. Installation Site Selection2-1. Indoor Unit AVOID2-2. Embedding the Tubing and Wiring trical wiring or conduits are 3. How to Install the Indoor Unit3-1. Remove the Rear Panel from the Unit 3-2. Make a Holea If Wooden Wall 3-3. Install the Rear Panel on the Wallb If Block, Brick, Concrete or Similar Type Wall Fig. 13a3-4. Removing and Installing the Grille 3-4-1. Indoor unit types How to replace the grille How to remove the grille3-4-2. Indoor unit types CS-MKS18NKU, CS-MKS24NKU Fig. 19b-13-5. Shape the Indoor Side Tubing 3-6. Wiring Instructions General precautions on wiringFig. 26a 3-7. Wiring Instructions for Inter-unit ConnectionsFig. 26b How to connect wiring to the terminal a For Indoor Unit WARNING Loose wiring may cause the terminal to overheat or resultb For Outdoor Unit For solid core wiring or F-cable For stranded wiring Right-side tubing 3-8. MountingFig. 37a Fig. 37b Left-side tubing Switching drain hose and drain capDrain hose Drain captubing and wiring to the out Do not supply power to theTo unmount indoor unit 3-9. Drain HoseFig. 59a Fig. 59b 4. How to Test Run the Air ConditionerFig. 59c 5. Remote Controller Installation Position 6-1. Address Setting of the Remote Controller 6. Address Switch8. Installation Check Sheet 7. Connecting a Home Automation DevicePage DC1111-0