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Panasonic CS-KE36NKU, CU-KE36NKU, CU-KE30NKU, CS-KE30NKU service manual Refrigerant Flow Diagram

Models: CS-KE30NKU CS-KE36NKU CU-KE30NKU CU-KE36NKU

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4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

Indoor Unit CS-KE30NKU	Outdoor Unit CU-KE30NKU
CS-KE36NKU	CU-KE36NKU

Indoor unit

Outdoor unit

		Sub	Main	Compressor
		Sub	Main
	Wide tube	Accumulator	Accumulator
Wide tube	service
Wide tube	valve
		High pressure
O.D	Muffler		switch
O.D			H.P.
5/8"			H.P.
5/8"
(15.88 mm)
		4-way
		valve

Heat exchanger		Heat exchanger
	Narrow	Electric
	Narrow	expansion
	tube	expansion
	tube	valve
	service	valve
Narrow tube	service	M
Narrow tube	valve	M
O.D.		Strainer
O.D.
3/8"
(9.52 mm)

Cooling cycle (Defrosting cycle)

Heating cycle

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Panasonic CS-KE36NKU, CU-KE36NKU, CU-KE30NKU, CS-KE30NKU service manual Refrigerant Flow Diagram

Contents

Outdoor Unit CS-KE30NKU+ CU-KE30NKU CS-KE36NKU+ CU-KE36NKUIndoor Unit TECHNICAL & SERVICE MANUALSAFETY PRECAUTIONS which may cause a unit breakdown REFRIGERANT FLOW DIAGRAM Table of ContentsSPECIFICATIONS 8. TROUBLESHOOTING BEFORE CALLING FOR SERVICE9. CHECKING ELECTRICAL COMPONENTS SPECIAL PRECAUTIONS WHEN SERVICING UNITINSTALLAION INSTRUCTIONS 10. REFRIGERANT R410AIndoor Air Intake Temp 1. OPERATING RANGETemperature Outdoor Air Intake TempFeatures 2. SPECIFICATIONS2-1.Unit Specifications WeightOutdoor Unit Indoor UnitCS-KE30NKU CU-KE30NKUVoltage Rating CS-KE36NKUCU-KE36NKU PerformanceVoltage Rating CS-KE36NKUCU-KE36NKU PerformanceControl PCB 2-2.Major Component Specifications2-2-1.Indoor Unit Fan MotorFan Motor Indoor Unit CS-KE36NKUControl PCB Flap MotorCompressor 2-2-2.Outdoor UnitP.C.Board Fan MotorFan Motor P.C.BoardCompressor Heat Exchanger Coil2-3.Other Component Specifications 3. DIMENSIONAL DATA CS-KE36NKU194-00-1 CU-KE36NKUinchmm Unit4. REFRIGERANT FLOW DIAGRAM 4-1.Refrigerant Flow Diagram5-1.Temperature Charts 5. PERFORMANCE DATA3 Indoor discharge air performance chart 1 High pressure performance chart2 Operating current performance chart Indoor Unit CS-KE30NKU Outdoor Unit CU-KE30NKU3 Indoor discharge air performance chart 1 Low pressure performance chart2 Operating current performance chart Indoor Unit CS-KE36NKU Outdoor Unit CU-KE36NKUdischarge 5-2.Cooling Capacity CS-KE30NKUCU-KE30NKU CS-KE36NKU CU-KE36NKU5-3.Cooling Capacity Low Ambient CS-KE30NKUCU-KE30NKU CS-KE36NKU CU-KE36NKU5-4.Heating Capacity CS-KE30NKUCU-KE30NKU CS-KE36NKU CU-KE36NKU5-5.Air Throw Distance Charts Cooling 6-1.Electrical Characteristics 6. ELECTRICAL DATA1 Voltage:230V CS-KE36NKUCU-KE36NKU Cooling6-2.Electric Wiring Diagrams CONTROLLEROutdoor Unit CU-KE30NKU CU-KE36NKU8FA2-5251-15200-0 Emergency operation 7. FUNCTIONS7-1.Operation Functions AUTO cooling/heating operationNIGHT SETBACK HIGH POWERTimer backup Lamp colors<Operation Sound> Noise Reducing Control Outdoor Unit<Switching Procedure to Noise Reducing Control> Fig.3 Control P.C.Board Fig.2 View from frontDescription of function Maximum Current Value Change Function<Maximum Current Value Change Procedure> Fig.4 Control P.C.BoardOverload prevention during heating Compressor discharge temperature control7-2.Protective Functions Freeze preventionDefrost detection and release CT Peak current cut-offcontrolDefrosting Sequence 8. TROUBLESHOOTING BEFORE CALLING FOR SERVICE 8-2.Method of Self-DiagnosticsPROCEDURE INDOOR UNIT 2 TIMER lampDIAGNOSIS CONTENTS 1 OPERATION lampCheck the indoor unit Is the fuse blown? 2If the self-diagnosticsfunction fails to operateCheck the power voltage Blown Normal8-3.Checking the Indoor and Outdoor Units 3-1Alarm Code : E05 < Before the Operation >Continued from the previous page A 3-2Alarm Code : E07/P04/P05/P20/P27 8-4.Trouble Diagnosis of Fan Motor 8-4-1.Indoor Fan MotorDiagnostic results 8-4-2.Outdoor Fan MotorDiagnostic procedure Remedy for symptom 3 toCorrection Locations most susceptible to noiseTrouble Locations most susceptible to noise9-1.Measurement of Insulation Resistance 9-1-1.Power Supply Cord9. CHECKING ELECTRICAL COMPONENTS 9-1-2.Indoor Unit9-2.Checking Continuity of Fuse on PCB Assy Fig.Fig. 10-1-1.What is New Refrigerant R410A? SPECIAL PRECAUTIONS WHEN SERVICING UNIT10-1.Characteristics of New Refrigerant R410A 10-1-3.CharacteristicsSize of flare 10-2.Checklist before ServicingTubing precautions No addition of compressor oil for R410A10-4.Tubing Installation Procedures 10-3.Tools Specifically for R410A10-5-1.Procedure for Replacing Compressor 10-5.In Case of Compressor MalfunctionPage 10-6.In Case Refrigerant is Leaking 10-8. Retro-FittingExisting Systems 10-7-1.When Tubes are Extended10-7.Charging Additional Refrigerant 10-8-1.Use of Existing UnitsAPPENDIX A Operating Instructions CS-KE30NKU+ CU-KE30NKU CS-KE36NKU+ CU-KE36NKUCS-KE30NKU Operating InstructionsSplit System Air Conditioner CS-KE36NKUSAFETY PRECAUTIONS FEATURESCONTENTS PRODUCT INFORMATIONINSTALLATION LOCATION SAFETY INSTRUCTIONSELECTRICAL REQUIREMENTS NAMES OF PARTS UNIT DISPLAY AND OPERATION BUTTONREMOTE CONTROLLER DISPLAY SymbolsCANCEL button SENSOR button REMOTE CONTROLLERON TIME/OFF TIME setting buttons Advance button ADDRESS switchHIGH POWER button 1 HR. TIMER button 1-HOUROFF TIMERTemperature setting buttons TEMP SensorHOW TO USE THE REMOTE CONTROLLER USING THE REMOTE CONTROLLERHOW TO INSTALL BATTERIES REMOTE CONTROLLER INSTALLATION POSITION2. Manual Operation OPERATION WITH THE REMOTE CONTROLLER1. Automatic Operation STEP STEP5. Night Setback Mode 3. Adjusting the Fan Speed4. Fan Only 6. QUIET ModeUnoccupied Indication 7. HIGH POWER Mode8. UNOCCUPIED Mode UnoccupiedSPECIAL REMARKS Power failure during operationRemote Controller ‘‘DRY’’ Operation2. How to set the OFF time SETTING THE TIMER1. How to set the present time 3. How to set the ON time1. 1-HourOFF Timer USING THE 1-HOUROFF TIMER4. How to set daily ON/OFF repeat timer TIPS FOR ENERGY SAVING1. Horizontal ADJUSTING THE AIRFLOW DIRECTIONOPERATION WITHOUT THE REMOTE CONTROLLER 2. VerticalRemoving and remounting the front panel How to replace the filterCleaning the main unit and Remote Controller Washing the front panel with waterWIRED REMOTE CONTROLLER TROUBLESHOOTING BEFORE CALLING FOR SERVICEOPERATING RANGE Outdoor Unit SPECIFICATIONSModel No Indoor UnitPage APPENDIX B INSTALLATION INSTRUCTIONS CS-KE30NKU+ CU-KE30NKU CS-KE36NKU+ CU-KE36NKUContents $/0908*54+0:054,8;9,9:/,8,-80.,84: When Installing… SPECIAL PRECAUTIONSWhen Transporting In Case of Improper Installationfins of the outdoor unit. You may get injured When ServicingOthers accidentally1-2.Accessories Supplied with Unit Table 1. General1-1.Tools Required for Installation not supplied 1-3.Optional Copper Tubing Kit2. Installation Site Selection Page $/,:;04.3?-8,,D,4+;89: Countermeasures against snow and wind $/,8,3?,4508-25= Fig. 5eUnit: inch 2-2-3.Dimensions of Wind-proofDuctReference diagram for CU-KE30NKU, CU-KE36NKU Unit: inchRequired space around the outdoor unit 2-2-4.Dimensions of Snow-proofDuct Reference diagram for CU-KE30NKU, CU-KE36NKUCU-KE30NKU, CU-KE36NKUwith STK-BDV80E Reference diagram for snow-proofductSpace requirements for setting Obstacle to the rear of unit#04.2,;40:049:22:054 Installation in front-rearrowsObstacles to the front and rear of unit 9:*2,9545:/90+,93. How to Install the Indoor Unit a If Wooden Wall 3-3.Install the Rear Panel on the WallTable b If Block, Brick, Concrete or Similar Type WallHow to replace the grille 3-4.Removing and Installing the GrilleHow to remove the grille Fig. 17a3-5.Shape the Indoor Side Tubing 3-6.Wiring InstructionsGeneral precautions on wiring Fig.3-7.Wire Size and Length Fig. 3-8.Wiring Instructions for Inter-unitConnectionsFig. Fig.How to connect wiring to the terminal Fig. 37a 3-9.MountingRight-sidetubing Fig. 37bDrain hose Switching drain hose and drain capLeft-sidetubing Drain capTo unmount indoor unit 4-2.Routing the Tubing and Wiring 4. How to Install the Outdoor Unit4-1.Wiring Instructions for the Outdoor Unit Fig.46a5-3.Caution before Connecting Tubes Tightly 5. Refrigerant Tubing5-2.Flaring Procedure with a Flare Tool 5-1.Use of the Flaring MethodTable 6. Air Purging attempting to turn the valve Be sure to completely insertthe hex wrench before Fig.How to Test Run the Air Conditioner Fig. 59a Fig. 59bFig. 59c Basic Functions of the Service Valves Pump DownService Valve Connections 7. Remote Controller Installation PositionFig. 8. Address Switch8-1.Address Setting of the Remote Controller Fig.DC1111-0