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Panasonic R410A service manual Refrigerant Flow Diagram, Indoor Unit CS-MKS9NB4U& CZ-18BT1U

Models: R410A

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4. REFRIGERANT FLOW DIAGRAM

4-1. Refrigerant Flow Diagram

Indoor Unit CS-MKS9NB4U & CZ-18BT1U

CS-MKS12NB4U & CZ-18BT1U

Indoor unit

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

Heat exchanger

Strainer

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

Indoor Unit CS-KS18NB4UW & CZ-18BT1U

Indoor unit

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

Heat exchanger

Strainer

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

Cooling cycle

Page 19

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Panasonic R410A Refrigerant Flow Diagram, Indoor Unit CS-MKS9NB4U& CZ-18BT1U, CS-MKS12NB4U& CZ-18BT1U Indoor unit

Contents

CS-MKS12NB4UBody & CZ-18BT1UPanel INDOOR UNIT : CS-MKS9NB4U& CZ-18BT1UCS-MKS12NB4U& CZ-18BT1U CS-KS18NB4UW& CZ-18BT1U CS-MKS9NB4UBody & CZ-18BT1UPanelSAFETY PRECAUTIONS which may cause a unit breakdown 6. MAINTENANCE TABLE OF CONTENTS2. SPECIFICATIONS 4. REFRIGERANT FLOW DIAGRAMCZ-RD515U CZ-RD515UAPPLICABLE MULTI-OUTDOORUNITS Outdoor Air Intake Temp 1. OPERATING RANGETemperature Indoor Air Intake Temp2-1.Unit Specifications 2. SPECIFICATIONS2-1-1. Indoor Unit CS-MKS9NB4U& CZ-18BT1U CS-MKS9NB4U& CZ-18BT1U Indoor UnitCS-MKS12NB4U& CZ-18BT1U CS-MKS12NB4U& CZ-18BT1U CS-KS18NB4UW& CZ-18BT1U CS-KS18NB4UW& CZ-18BT1U 2-2-1.Indoor Unit 2-2.Major Component SpecificationsIndoor Unit Panel CZ-18BT1U Indoor Unit Body CS-MKS12NB4UIndoor Unit Panel CZ-18BT1U Indoor Unit Body CS-KS18NB4UW•Indoor air temp sensor Model:KTEC-35-S98 2-3.Other Component SpecificationsIndoor Unit CS-MKS9NB4U& CZ-18BT1U CS-MKS12NB4U& CZ-18BT1U CS-KS18NB4UW& CZ-18BT1UIndoor Unit CS-MKS9NB4U& CZ-18BT1U 3. DIMENSIONAL DATACS-MKS12NB4U& CZ-18BT1U CS-KS18NB4UW& CZ-18BT1U CS-MKS12NB4U& CZ-18BT1U Indoor unit 4. REFRIGERANT FLOW DIAGRAM4-1.Refrigerant Flow Diagram Indoor Unit CS-MKS9NB4U& CZ-18BT1UCS-MKS12NB4U& CZ-18BT1U CS-KS18NB4UW& CZ-18BT1U 5-1.Electric Wiring Diagrams5. ELECTRICAL DATA Indoor Unit CS-MKS9NB4U& CZ-18BT1UFig.1 6. MAINTENANCE6-1.Disassembly Procedure 6-1-1.Remove the air intake grillFig.8 6-1-3.Remove the ceiling panelFig.6 Fig.7Fig.11 6-1-4.Remove the indoor air temperature sensor6-1-5.Remove the power box and control box Fig.10Screw Ground cable Fig.13Fig.14 Fig.15 24Fig.18 6-1-6.Remove the main body lower sectionFig.16 Fig.17Fig.20 6-1-8.Remove the drain pump and float switch6-1-7.Remove the heat exchanger sensor Fig.19Fig.23 6-1-9.Remove the turbo fan and fan motor6-1-10.Remove the heat exchanger Fig.22SENSOR DRY 7. FUNCTIONS7-1.Operation Functions Emergency operationLamp colors HIGH POWERTimer backup NIGHT SETBACKFreeze prevention 7-2.Protective Functions8-2.Method of Self-Diagnostics 8. TROUBLESHOOTING BEFORE CALLING FOR SERVICEPROCEDURE INDOOR UNIT 1 Self-diagnosticsLampsCheck the indoor unit Is the fuse blown? 8-3.Checking the Indoor and Outdoor Units2If the self-diagnosticsfunction fails to operate Using the TEST/T-RUNterminals3-1Condition: E01 < Before the Operation >Continued from the previous page A 3-2Condition: E12 Diagnostic results 8-4.Trouble Diagnosis of Fan Motor8-4-1.Indoor Fan Motor Diagnostic procedureTrouble 1 Noise malfunction2 Electromagnetic interference Locations most susceptible to noisePage Operating Instructions APPENDIX ACS-MKS9NB4U& CZ-18BT1U CS-MKS12NB4U& CZ-18BT1U CZ-18BT1U Split System Air ConditionerCS-MKS9NB4U CU-3KS19NBU CS-MKS12NB4U CU-4KS24NBU CU-4KS31NBUPRODUCT INFORMATION FEATURESCONTENTS SAFETY PRECAUTIONSAvoid INSTALLATION LOCATIONSAFETY INSTRUCTIONS ELECTRICAL REQUIREMENTSAir Outlet NAMES OF PARTSUNIT DISPLAY AND OPERATION BUTTON Air IntakeSymbols REMOTE CONTROLLER DISPLAYREMOTE CONTROLLER ON/OFF operation button 1 HR. TIMER button 1-HOUROFF TIMERTemperature setting buttons TEMP SensorREMOTE CONTROLLER INSTALLATION POSITION USING THE REMOTE CONTROLLERHOW TO INSTALL BATTERIES HOW TO USE THE REMOTE CONTROLLER3. Fan Only OPERATION WITH THE REMOTE CONTROLLER2. Adjusting the Fan Speed 1. OperationRemote Controller SETTING THE TIMER5. HIGH POWER Mode Power failure during operation4. How to set daily ON/OFF repeat timer 1. How to set the present time2. How to set the OFF time 3. How to set the ON timeTIPS FOR ENERGY SAVING USING THE 1-HOUROFF TIMERADJUSTING THE AIRFLOW DIRECTION 1. 1-HourOFF TimerCleaning the flaps CARE AND CLEANINGOPERATION WITHOUT THE REMOTE CONTROLLER When the air conditioner is not runningCare: After a prolonged idle period How to remove the filterHow to remove the air intake grille Air filterOPERATING RANGE TROUBLESHOOTINGWIRED REMOTE CONTROLLER BEFORE CALLING FOR SERVICESPECIFICATIONS Page CS-KS18NB4UW& CZ-18BT1U APPENDIX BOperating Instructions Outdoor Units CS-KS12NB41 CU-KS12NK1A CS-KS18NB4UW CU-KS18NKUCU-KS18NKUA CU-3KS19NBU CU-4KS24NBU CU-4KS31NBUPRODUCT INFORMATION FEATURESCONTENTS SAFETY PRECAUTIONSAvoid INSTALLATION LOCATIONSAFETY INSTRUCTIONS ELECTRICAL REQUIREMENTSAir Outlet NAMES OF PARTSUNIT DISPLAY AND OPERATION BUTTON Air IntakeSymbols REMOTE CONTROLLER DISPLAYREMOTE CONTROLLER ON/OFF operation button 1 HR. TIMER button 1-HOUROFF TIMERTemperature setting buttons TEMP SensorREMOTE CONTROLLER INSTALLATION POSITION USING THE REMOTE CONTROLLERHOW TO INSTALL BATTERIES HOW TO USE THE REMOTE CONTROLLER3. Fan Only OPERATION WITH THE REMOTE CONTROLLER2. Adjusting the Fan Speed 1. OperationRemote Controller SETTING THE TIMER5. HIGH POWER Mode Power failure during operation4. How to set daily ON/OFF repeat timer 1. How to set the present time2. How to set the OFF time 3. How to set the ON timeTIPS FOR ENERGY SAVING USING THE 1-HOUROFF TIMERADJUSTING THE AIRFLOW DIRECTION 1. 1-HourOFF TimerCleaning the flaps CARE AND CLEANINGOPERATION WITHOUT THE REMOTE CONTROLLER When the air conditioner is not runningCare: After a prolonged idle period How to remove the filterHow to remove the air intake grille Air filterOPERATING RANGE TROUBLESHOOTINGWIRED REMOTE CONTROLLER BEFORE CALLING FOR SERVICE• For Single use SPECIFICATIONS• For Single use •For Multiple use •For Multiple useAPPENDIX C INSTALLATION INSTRUCTIONS5.REMOTE CONTROLLER INSTALLATION ContentsFor Indoor Unit 3. HOW TO INSTALL THE INDOOR UNITWhen Transporting SPECIAL PRECAUTIONSIn Case of Improper Installation WARNING When WiringOthers When Servicing1-3.Optional Copper Tubing Kit 1. General1-1.Tools Required for Installation not supplied 1-2.Accessories Supplied with Unit TableFig. 2. Installation Site Selection2-1.Indoor Unit AVOIDTable 2-2.Embedding the Tubing and Wiring3-3.Placing the Unit Inside the Ceiling 3. How to Install the Indoor Unit3-1.Preparation for Suspending 3-2.Suspending the Indoor UnitFig. 3-4.Installing the Drain PipingDo not use natural drainage Fig.3-5.Checking the Drainage utes after the FS 3P connector is reconnected3-6.How to Install the Ceiling Panel 3-6-1.Before Installing the Ceiling PanelFig. 3-6-2.Installing the Ceiling PanelFig. Fig.A. Attaching the corner cover 3-6-3.Wiring the Ceiling Panel and the IndicatorFig. Fig.General precautions on wiring 3-6-5.Checking After Installation3-6-7.Adjusting the Auto Flap 3-7.Wiring Instructionsa For Indoor Unit How to connect wiring to the terminalFor solid core wiring or F-cable For stranded wiringFig. Fig. 4. How to Test Run the Air ConditionerFig. Mounting screws 5/32 5/8 4 16 mm included 5. Remote Controller Installation PositionRear side Remote control holder 5-1.Mounting on a WallFig. 6. Address Switch6-1.Address Setting of the Remote Controller Fig.8. Installation Check Sheet 7. Connecting a Home Automation DeviceCZ-RD515U APPENDIX DOperating Instructions Model No. CZ-RD515U Operating Instructions Wired Remote ControllerPRODUCT INFORMATION FEATURESCONTENTS SAFETY PRECAUTIONSAvoid INSTALLATION LOCATIONSAFETY INSTRUCTIONS ELECTRICAL REQUIREMENTSDisplay REMOTE CONTROLLERTemperature setting buttons TEMP Timer and Present Time setting buttonsHEAT 1 HR. TIMER button 1-HOUROFF TIMERTIMER SELECT button AUTOSymbols REMOTE CONTROLLER DISPLAY1Operation mode AUTO only for COOL/DRY/HEAT Model OPERATION WITH THE REMOTE CONTROLLER 1.Automatic Operationonly for COOL/DRY/HEAT Model 2. Manual Operation5. Night Setback Mode 3. Adjusting the Fan SpeedRemote Controller Display 4. Fan Only2. How to set the OFF time 5. Backup functionSETTING THE TIMER 1. How to set the present timeSetting procedure USING THE 1-HOUROFF TIMERADJUSTING THE AIRFLOW DIRECTION 1. 1-HourOFF TimerPage INSTALLATION INSTRUCTIONS APPENDIX ECZ-RD515U How to install the remote controller INSTALLATION INSTRUCTIONS Wired Remote ControllerParts supplied with the remote controller Remote controller installation guidelinesFig. 2-b A. Installing with in-walljunction boxB. Installing directly onto the wall Fig. 2-aFig. How to wire the remote controllerFig. Fig. 8-aFig. WI1011-0 Printed in China How to Test Run the Air ConditionerFig. Fig.Page DC1111-0