Panasonic CS-KS18NKU, CU-KS18NKU specification

Operating Instructions

Split System Air Conditioner

Model No.
Indoor Units	Outdoor Units
CS-KS18NKU	CU-KS18NKU
CS-KS24NKU	CU-KS18NKUA
	CU-KS24NKU
	CU-KS24NKUA

This air conditioner uses the refrigerant R410A.

Before operating the unit, read these operating instructions thoroughly and keep them for future reference.

Panasonic Corporation

1006 Kadoma, Kadoma City, Osaka, Japan

85264181210001

CV6233187228

Image 67

Panasonic CS-KS18NKU, CU-KS18NKU service manual Operating Instructions Split System Air Conditioner

Contents

DC Inverter Split System AIR Conditioner Safety Precautions Prohibit Table of Contents Appendix a Models CS-KS18NKU + CU-KS18NKUA Operating RangeModels CS-KS18NKU + CU-KS18NKU CS-KS24NKU + CU-KS24NKU CU-KS18NKU SpecificationsUnit Specifications CS-KS18NKU 208V CU-KS24NKU CS-KS24NKU 12.1 CU-KS18NKUA 15 1.2 to Dimen Outdoor Unit CU-KS24NKUA 230V CU-KS24NKUA Indoor Unit Major Component SpecificationsIndoor Unit CS-KS18NKU CB-CS-KS24NKU Indoor Unit CS-KS24NKU Outdoor Unit CU-KS18NKU Outdoor Unit Outdoor Unit CU-KS24NKU Outdoor Unit CU-KS18NKUA Outdoor Unit CU-KS24NKUA CS-KS18NKU CS-KS24NKU Other Component SpecificationsCU-KS18NKU CU-KS24NKU CU-KS18NKUA CU-KS24NKUA Dimensional Data 23-15/165-11/32 852-0-0010-119-00-0 CS-KS24NKU CU-KS18NKUA CU-KS24NKUA Refrigerant Flow DiagramRefrigerant Flow Diagram Insulation of Refrigerant Tubing Performance Data Temperature Charts Indoor Unit CS-KS18NKU Outdoor Unit CU-KS18NKUA Indoor Unit CS-KS24NKU Outdoor Unit CU-KS24NKU Indoor Unit CS-KS24NKU Outdoor Unit CU-KS24NKUA Cooling Capacity Power Supply 230V Single Phase 60Hz Cooling CapacityOutdoor Unit CU-KS18NKU / CU-KS18NKUA Outdoor Unit CU-KS24NKU / CU-KS24NKUA SHC Cooling Capacity Low Ambient 15,690 20,420 Air Throw Distance Charts Cooling Electrical Data Electrical Characteristics CS-KS24NKU Indoor Unit CS-KS18NKU CS-KS24NKU Electric Wiring Diagrams8FA2-5251-11000-2 BLK Outdoor Unit CU-KS18NKU CU-KS18NKUA RED WHT 1P-CONNECTORWHT Address Setting of the Remote Control Unit Maintenance How to Connect How to Disconnect PAM- control FunctionsOperation Functions Emergency operation Lamp colors Timer backup CT Peak current cut-off control Compressor discharge temperature controlProtective Functions Freeze prevention Precautions before Performing Inspection or Repair Troubleshooting Before Calling for ServiceMethod of Self-Diagnostics Code Diagnosis Contents Self-diagnostics Lamps Replace the controller NormalReplace the circuit board or the fuse Checking the Indoor and Outdoor Units Using the TEST/T-RUN terminalsChecking the indoor unit Control Check items unit operation Condition E01 Serial Communication Error Identification ProcedureBefore the Operation Off Blinking Illuminated From the previous page a Condition E12 Indoor Fan Motor Trouble Diagnosis of Fan Motor CU-KS24NKU / CU-KS24NKUA Outdoor Fan Motor Noise malfunction Noise Malfunction and Electromagnetic InterferenceElectromagnetic interference Measurement of Insulation Resistance for Electrical Parts Power Supply CordChecking Electrical Components Measurement of Insulation Resistance Checking Continuity of Fuse on PCB Assy Characteristics Refrigerant R410A Special Precautions When Servicing UnitCharacteristics of New Refrigerant R410A What is New Refrigerant R410A? Checklist before Servicing Tools Specifically for R410A Tubing Installation Procedures Case of Compressor Malfunction Procedure for Replacing Compressor Amount in the charging cylinder is less than 20% Never charge a large amountUnit. This may cause Damage to the compressor Welding leaking points Case Refrigerant is LeakingRecharging Use of Existing Units When Tubes are ExtendedCharging Additional Refrigerant Retro-Fitting Existing Systems Appendix a Operating Instructions Operating Instructions Split System Air Conditioner Product Information FeaturesContents Safety Precautions Safety Instructions Installation LocationElectrical Requirements Page Indoor Unit Names of PartsOutdoor Unit Unit Display and Operation Button Green and FAN green modeQuiet lamp Remote Controller Display OFF Time Remote ControllerHour OFF Timer On Time FAN TempDRY Cool Use a thin object such as the tip of a pen to press Using the Remote ControllerHow to Install Batteries ACL button ALL Clear Controller To take out the remote controller, pull it forwardReceiver which could block the signal Rear Side Hole Step Operation with the Remote Controller Press the ON/OFF operation button Operation with the Remote Controller Night Setback Mode Quiet Mode Special Remarks Power failure during operationClicking sound is heard from the air conditioner Example To set to 1030 pm Setting the TimerOperation Indication OFF How to set the on time Example To start operation at 710 amTo cancel a timer program Press the Cancel button 1030 pm 710 am 1100 am Operation together with the Daily ON/OFF Repeat Timer Using the 1-HOUR OFF TimerSetting procedure Cancellation procedure Cool Sweep DRY FAN Adjusting the Airflow Direction Cyclically Cooling operation Stop Operation Without the Remote ControllerCare and Cleaning When the air conditioner is not running Groove Pin Air intake grille How to remove the filter 1. Grasp both ends of the air Washing the grille with water Wired Remote Controller Operating Range Troubleshooting Before Calling for ServiceTrouble Possible Cause Remedy CU-KS18NKU, CU-KS18NKUA CS-KS18NKU Specifications 852-6-4190-576-00-0 Contents Installation Instructions Split System Air Conditioner Please Read Before Starting Accidentally Fins of the outdoor unit. You may get injured Optional Copper Tubing Kit Tools Required for Installation not suppliedAccessories Supplied with Unit Table General Additional Materials Required for Installation Installation Site SelectionAvoid About Baffle Plate for the Outdoor Unit CU-KSxxNKUA models only Front Back Air Discharge Baffle Air Intake Baffle Precautions for installation Make a Hole How to Install the Indoor UnitTrical wiring or conduits are Remove the Rear Panel from the Unit If Wooden Wall Install the Rear Panel on the WallIf Block, Brick, Concrete or Similar Type Wall How to remove the grille Remove the Grille to Install the Indoor UnitHow to replace the grille Shape the Indoor Side Tubing Wiring Instructions General precautions on wiring Wiring System Diagram Recommended Wire Length and Diameter Wiring Instructions for Inter-unit Connections For Outdoor Unit For solid core wiring or F-cable How to connect wiring to the terminal For Indoor Unit For stranded wiring Right-side tubing Mounting Left-side tubing Switching drain hose and drain capDrain cap Unit or operate it until all Do not supply power toTubing and wiring to the out To unmount indoor unit First refer to . Installation Site Selection How to Install the Outdoor UnitWiring Instructions for the Outdoor Unit Refrigerant Tubing Flaring Procedure with a Flare ToolUse of the Flaring Method To prevent heat loss and wet floors due to dripping of con Connecting Tubing between Indoor and Outdoor UnitsFinishing the Installation Insulation of Refrigerant Tubing Those used in automobile tires Air Purging Air Purging with a Vacuum Pump for Test Run Tem. The valve core is similar toPage How to Test Run the Air Conditioner External diameter of service port R410A 5/16 Basic Functions of the Service ValvesBasic functions of the service valves are given in below When opening or closing the service valve stem Remote Controller Installation Position Service Valve ConnectionsMounting on a Wall Address Setting of the Remote Controller Address SwitchPage DC1111-0