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Panasonic CS-KS24NKU service manual Indoor Unit, Outdoor Unit CU-KS24NKUA

Models: CU-KS24NKUA CS-KS24NKU CU-KS24NKU

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Indoor Unit	CS-KS24NKU
Outdoor Unit	CU-KS24NKU
Cooling							< 230V >
							< 230V >
					Indoor Unit	Outdoor Unit	Complete Unit

					Fan Motor	Fan Motor + Compressor
					Fan Motor	Fan Motor + Compressor

Performance at						230V Single-phase 60Hz

Rating conditions			Running amp.	A	0.5	10.3	10.8

			Power input	W	55	2,405	2,460

Rating conditions:		Indoor air temperature:		80 °F (26.7 °C) DB / 67 °F (19.4 °C) WB
		Outdoor air temperature:		95 °F (35 °C) DB
Cooling							< 208V >
							< 208V >
					Indoor Unit	Outdoor Unit	Complete Unit

					Fan Motor	Fan Motor + Compressor
					Fan Motor	Fan Motor + Compressor

Performance at						208V Single-phase 60Hz

Rating conditions			Running amp.	A	0.5	11.6	12.1
			Power input	W	55	2,405	2,460

Rating conditions:		Indoor air temperature:		80 °F (26.7 °C) DB / 67 °F (19.4 °C) WB
		Outdoor air temperature:		95 °F (35 °C) DB
Indoor Unit	CS-KS24NKU
Outdoor Unit CU-KS24NKUA
Cooling							< 230V >
					Indoor Unit	Outdoor Unit	Complete Unit

					Fan Motor	Fan Motor + Compressor
					Fan Motor	Fan Motor + Compressor

Performance at						230V Single-phase 60Hz

Rating conditions			Running amp.	A	0.5	10.3	10.8
			Power input	W	55	2,405	2,460
Rating conditions:		Indoor air temperature:		80 °F (26.7 °C) DB / 67 °F (19.4 °C) WB
		Outdoor air temperature:		95 °F (35 °C) DB
Cooling							< 208V >
					Indoor Unit	Outdoor Unit	Complete Unit

					Fan Motor	Fan Motor + Compressor
					Fan Motor	Fan Motor + Compressor

Performance at						208V Single-phase 60Hz

Rating conditions			Running amp.	A	0.5	11.6	12.1
			Power input	W	55	2,405	2,460
Rating conditions:		Indoor air temperature:		80 °F (26.7 °C) DB / 67 °F (19.4 °C) WB
		Outdoor air temperature:		95 °F (35 °C) DB

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Panasonic CS-KS24NKU service manual Indoor Unit, Outdoor Unit CU-KS24NKUA

Contents

CS-KS24NKU+ CU-KS24NKU+ CU-KS24NKUA CS-KS18NKU+ CU-KS18NKU+ CU-KS18NKUAIndoor Unit Outdoor UnitSAFETY PRECAUTIONS which may cause a unit breakdown SPECIFICATIONS Table of Contents4. REFRIGERANT FLOW DIAGRAM 7. MAINTENANCE11. REFRIGERANT R410A SPECIAL PRECAUTIONS WHEN SERVICING UNITAPPENDIX A APPENDIX BIndoor Air Intake Temp 1. OPERATING RANGEOutdoor Air Intake Temp Cooling2-1.Unit Specifications 2. SPECIFICATIONSVoltage Rating icalCS-KS18NKU Indoor UnitOutdoor Unit CU-KS18NKUCU-KS24NKU CS-KS24NKUVoltage Rating icalCU-KS24NKU CS-KS24NKUVoltage Rating icalCU-KS18NKUA CS-KS18NKUVoltage Rating icalCU-KS18NKUA CS-KS18NKUVoltage Rating icalCS-KS24NKU Indoor UnitOutdoor Unit CU-KS24NKUA 230VCS-KS24NKU Indoor UnitOutdoor Unit CU-KS24NKUA2-2-1.Indoor Unit 2-2.Major Component SpecificationsControl PCB Fan MotorControl PCB Indoor Unit CS-KS24NKUFan Motor Flap MotorControl PCB 2-2-2.Outdoor UnitCompressor Fan MotorCompressor Control PCBFan Motor Heat Exchanger CoilCompressor Control PCBFan Motor Heat Exchanger CoilCompressor Control PCBFan Motor Heat Exchanger Coil2-3.Other Component Specifications CS-KS24NKU 3. DIMENSIONAL DATACU-KS18NKUA Unit inchmm CU-KS24NKUA4-1.Refrigerant Flow Diagram 4. REFRIGERANT FLOW DIAGRAMInsulation of Refrigerant Tubing 5. PERFORMANCE DATA 5-1.Temperature Charts2 Operating current performance chart 1 Low pressure performance chart3 Indoor discharge air performance chart Indoor Unit CS-KS18NKU Outdoor Unit CU-KS18NKUA2 Operating current performance chart 1 Low pressure performance chart3 Indoor discharge air performance chart Indoor Unit CS-KS24NKU Outdoor Unit CU-KS24NKU2 Operating current performance chart 1 Low pressure performance chart3 Indoor discharge air performance chart Indoor Unit CS-KS24NKU Outdoor Unit CU-KS24NKUACS-KS18NKU 5-2.Cooling CapacityOutdoor Unit : CU-KS18NKU / CU-KS18NKUA Outdoor Unit CU-KS24NKU / CU-KS24NKUA CS-KS24NKUPower Supply : 230V Single Phase 60Hz 5-3.Cooling Capacity Low AmbientIndoor Unit : CS-KS18NKU Outdoor Unit : CU-KS18NKUACU-KS24NKUA CS-KS24NKU5-4.Air Throw Distance Charts Cooling 6. ELECTRICAL DATA 6-1.Electrical CharacteristicsIndoor Unit CS-KS18NKUCS-KS24NKU Indoor UnitOutdoor Unit CU-KS24NKUA ASSY 6-2.Electric Wiring DiagramsLAMP CONTROLLEROutdoor Unit CU-KS18NKU CU-KS18NKUA and/or cleaning any electrical partsand/or cleaning any electrical parts 1P-CONNECTORWHT and/or cleaning any electrical parts7-1.Address Setting of the Remote Control Unit 7. MAINTENANCEHow to Connect How to DisconnectPull the cover upward 8-1.Operation Functions 8. FUNCTIONSEmergency operation SENSOR DRYTimer backup HIGH POWERNIGHT SETBACK Lamp colors8-2.Protective Functions Compressor discharge temperature controlFreeze prevention CT Peak current cut-offcontrol9-2.Method of Self-Diagnostics 9. TROUBLESHOOTING BEFORE CALLING FOR SERVICEPROCEDURE REMOTE CONTROL receiver INDOOR UNIT 1 OPERATION lamp 2 TIMER lampDIAGNOSIS CONTENTS 3 QUIET lamp OPERATION buttonCheck the power voltage Blown 2If the self-diagnosticsfunction fails to operateCheck the indoor unit Is the fuse blown? Normal9-3.Checking the Indoor and Outdoor Units 3-1Condition: E01 < Before the Operation >Continued from the previous page A 3-2Condition: E12 9-4-1.Indoor Fan Motor 9-4.Trouble Diagnosis of Fan MotorDiagnostic procedure 9-4-2.Outdoor Fan MotorDiagnostic results Remedy for symptom 3 toTrouble Locations most susceptible to noiseCorrection Locations most susceptible to noise10. CHECKING ELECTRICAL COMPONENTS 10-1-1.Power Supply Cord10-1.Measurement of Insulation Resistance 10-1-2.Indoor UnitFig. 10-2.Checking Continuity of Fuse on PCB AssyFig. 11-1.Characteristics of New Refrigerant R410A SPECIAL PRECAUTIONS WHEN SERVICING UNIT11-1-1.What is New Refrigerant R410A? 11-1-3.CharacteristicsTubing precautions 11-2.Checklist before ServicingSize of flare No addition of compressor oil for R410A11-3.Tools Specifically for R410A 11-4.Tubing Installation Procedures11-5.In Case of Compressor Malfunction 11-5-1.Procedure for Replacing CompressorPage 11-6.In Case Refrigerant is Leaking 11-7.Charging Additional Refrigerant 11-7-1.When Tubes are Extended11-8. Retro-FittingExisting Systems 11-8-1.Use of Existing UnitsCS-KS18NKU+ CU-KS18NKU+ CU-KS18NKUA APPENDIX A Operating InstructionsCS-KS24NKU+ CU-KS24NKU+ CU-KS24NKUA Split System Air Conditioner Operating InstructionsCS-KS18NKU CU-KS18NKUCONTENTS FEATURESSAFETY PRECAUTIONS PRODUCT INFORMATIONSAFETY INSTRUCTIONS INSTALLATION LOCATIONELECTRICAL REQUIREMENTS •Refrigerant gas leakage may cause fire Remote Controller Drain Hose Refrigerant Tubes NAMES OF PARTSRemote Controller Air Intakes INDOOR 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 OPERATION WITH THE REMOTE CONTROLLER CONTINUED 4. Night Setback ModeSetting temperature5. 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-HOUROFF TIMERADJUSTING THE AIRFLOW DIRECTION CARE AND CLEANING OPERATION WITHOUT THE REMOTE CONTROLLERCARE AND CLEANING CONTINUED CARE AND CLEANING CONTINUED WIRED REMOTE CONTROLLERWashing the grille with water OPERATING RANGE TROUBLESHOOTING BEFORE CALLING FOR SERVICETrouble Possible CauseModel No SPECIFICATIONSOutdoor Unit Indoor UnitAPPENDIX B INSTALLATION INSTRCTIONSCS-KS18NKU+ CU-KS18NKU+ CU-KS18NKUA CS-KS24NKU+ CU-KS24NKU+ CU-KS24NKUAThis air conditioner uses the refrigerant R410A ContentsWhen Transporting SPECIAL PRECAUTIONSWhen Installing… In Case of Improper InstallationOthers When Servicingfins of the outdoor unit. You may get injured accidentally1-1.Tools Required for Installation not supplied 1. General1-2.Accessories Supplied with Unit Table 1-3.Optional Copper Tubing Kit2. Installation Site Selection About AboutBack FrontFig. 5f Air Discharge Baffle Air Intake Baffle1 Recommended dimensions of the baffle plates Fig. 5g For Air Intake4 Precautions for installation 3 Installation procedure1. Air Intake Baffle 2. Air Discharge Baffletrical wiring or conduits are 3. How to Install the Indoor Unit3-1.Remove the Rear Panel from the Unit 3-2.Make a HoleTable 3-3.Install the Rear Panel on the Walla If Wooden Wall b If Block, Brick, Concrete or Similar Type WallHow to remove the grille 3-4.Remove the Grille to Install the Indoor UnitHow to replace the grille Fig. 19bGeneral precautions on wiring 3-6.Wiring Instructions3-5.Shape the Indoor Side Tubing Fig.3-7.Recommended Wire Length and Diameter Plasticcover Wiring 10 25 cm 3-8.Wiring Instructions for Inter-unitConnectionsInter-unitwiring Earth plate Lock nut Top of conduit connectorHow to connect wiring to the terminal Right-sidetubing 3-9.MountingFig. 37a Fig. 37bLeft-sidetubing To unmount indoor unit 4-1.Wiring Instructions for the Outdoor Unit 4. How to Install the Outdoor UnitFig. 5-2.Flaring Procedure with a Flare Tool 5. Refrigerant Tubing5-3.Caution before Connecting Tubes Tightly 5-1.Use of the Flaring MethodTable Air Purging with a Vacuum Pump for Test Run 6. Air Purgingtem. The valve core is similar to those used in automobile tiresFig. Fig. 59a Fig. 59b How to Test Run the Air ConditionerFig. 59c Pump Down Basic Functions of the Service ValvesWhen opening or closing the service valve stem Pump Down Procedure7. Remote Controller Installation Position Service Valve ConnectionsTable Fig. 60c8-1.Address Setting of the Remote Controller 8. Address SwitchFig. Fig.Page DC1111-0