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Panasonic
service manual APPENDIX A Operating Instructions, CS-KS18NKU+ CU-KS18NKU+ CU-KS18NKUA
Models:
CS-KS18NKU
CU-KS18NKU
1
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Troubleshooting
Specification
Electrical Characteristics
Install
Refrigerant Flow Diagram
Dimension
Maintenance
Wired Remote Controller
Remedy for symptom 3 to
2If the self-diagnosticsfunction fails to operate
Page 66
Image 66
APPENDIX A Operating Instructions
CS-KS18NKU
+
CU-KS18NKU
+
CU-KS18NKUA
CS-KS24NKU
+
CU-KS24NKU
+
CU-KS24NKUA
(852-6-4181-210-00-1)
A-1
Page 65
Page 67
Page 66
Image 66
Page 65
Page 67
Contents
Indoor Unit
CS-KS18NKU+ CU-KS18NKU+ CU-KS18NKUA
CS-KS24NKU+ CU-KS24NKU+ CU-KS24NKUA
Outdoor Unit
SAFETY PRECAUTIONS
which may cause a unit breakdown
4. REFRIGERANT FLOW DIAGRAM
Table of Contents
SPECIFICATIONS
7. MAINTENANCE
APPENDIX A
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
11. REFRIGERANT R410A
APPENDIX B
Outdoor Air Intake Temp
1. OPERATING RANGE
Indoor Air Intake Temp
Cooling
Voltage Rating
2. SPECIFICATIONS
2-1.Unit Specifications
ical
Outdoor Unit
Indoor Unit
CS-KS18NKU
CU-KS18NKU
Voltage Rating
CS-KS24NKU
CU-KS24NKU
ical
Voltage Rating
CS-KS24NKU
CU-KS24NKU
ical
Voltage Rating
CS-KS18NKU
CU-KS18NKUA
ical
Voltage Rating
CS-KS18NKU
CU-KS18NKUA
ical
Outdoor Unit CU-KS24NKUA
Indoor Unit
CS-KS24NKU
< 230V >
Outdoor Unit
Indoor Unit
CS-KS24NKU
CU-KS24NKUA
Control PCB
2-2.Major Component Specifications
2-2-1.Indoor Unit
Fan Motor
Fan Motor
Indoor Unit CS-KS24NKU
Control PCB
Flap Motor
Compressor
2-2-2.Outdoor Unit
Control PCB
Fan Motor
Fan Motor
Control PCB
Compressor
Heat Exchanger Coil
Fan Motor
Control PCB
Compressor
Heat Exchanger Coil
Fan Motor
Control PCB
Compressor
Heat Exchanger Coil
2-3.Other Component Specifications
3. DIMENSIONAL DATA
CS-KS24NKU
CU-KS18NKUA
CU-KS24NKUA
Unit: inchmm
4. REFRIGERANT FLOW DIAGRAM
4-1.Refrigerant Flow Diagram
Insulation of Refrigerant Tubing
5-1.Temperature Charts
5. PERFORMANCE DATA
3 Indoor discharge air performance chart
1 Low pressure performance chart
2 Operating current performance chart
Indoor Unit CS-KS18NKU Outdoor Unit CU-KS18NKUA
3 Indoor discharge air performance chart
1 Low pressure performance chart
2 Operating current performance chart
Indoor Unit CS-KS24NKU Outdoor Unit CU-KS24NKU
3 Indoor discharge air performance chart
1 Low pressure performance chart
2 Operating current performance chart
Indoor Unit CS-KS24NKU Outdoor Unit CU-KS24NKUA
5-2.Cooling Capacity
CS-KS18NKU
Outdoor Unit CU-KS18NKU / CU-KS18NKUA
CS-KS24NKU
Outdoor Unit : CU-KS24NKU / CU-KS24NKUA
Indoor Unit : CS-KS18NKU
5-3.Cooling Capacity Low Ambient
Power Supply : 230V Single Phase 60Hz
Outdoor Unit : CU-KS18NKUA
CS-KS24NKU
CU-KS24NKUA
5-4.Air Throw Distance Charts
Cooling
Indoor Unit
6-1.Electrical Characteristics
6. ELECTRICAL DATA
CS-KS18NKU
Indoor Unit
CS-KS24NKU
Outdoor Unit CU-KS24NKUA
LAMP
6-2.Electric Wiring Diagrams
ASSY
CONTROLLER
and/or cleaning any electrical parts
Outdoor Unit CU-KS18NKU CU-KS18NKUA
and/or cleaning any electrical parts
and/or cleaning any electrical parts
1P-CONNECTORWHT
7. MAINTENANCE
7-1.Address Setting of the Remote Control Unit
How to Disconnect
How to Connect
Pull the cover upward
Emergency operation
8. FUNCTIONS
8-1.Operation Functions
SENSOR DRY
NIGHT SETBACK
HIGH POWER
Timer backup
Lamp colors
Freeze prevention
Compressor discharge temperature control
8-2.Protective Functions
CT Peak current cut-offcontrol
9. TROUBLESHOOTING BEFORE CALLING FOR SERVICE
9-2.Method of Self-Diagnostics
PROCEDURE
DIAGNOSIS CONTENTS
INDOOR UNIT 1 OPERATION lamp 2 TIMER lamp
REMOTE CONTROL receiver
3 QUIET lamp OPERATION button
Check the indoor unit Is the fuse blown?
2If the self-diagnosticsfunction fails to operate
Check the power voltage Blown
Normal
9-3.Checking the Indoor and Outdoor Units
< Before the Operation >
3-1Condition: E01
Continued from the previous page A
3-2Condition E12
9-4.Trouble Diagnosis of Fan Motor
9-4-1.Indoor Fan Motor
Diagnostic results
9-4-2.Outdoor Fan Motor
Diagnostic procedure
Remedy for symptom 3 to
Correction
Locations most susceptible to noise
Trouble
Locations most susceptible to noise
10-1.Measurement of Insulation Resistance
10-1-1.Power Supply Cord
10. CHECKING ELECTRICAL COMPONENTS
10-1-2.Indoor Unit
10-2.Checking Continuity of Fuse on PCB Assy
Fig.
11-1-1.What is New Refrigerant R410A?
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
11-1.Characteristics of New Refrigerant R410A
11-1-3.Characteristics
Size of flare
11-2.Checklist before Servicing
Tubing precautions
No addition of compressor oil for R410A
11-4.Tubing Installation Procedures
11-3.Tools Specifically for R410A
11-5-1.Procedure for Replacing Compressor
11-5.In Case of Compressor Malfunction
Page
11-6.In Case Refrigerant is Leaking
11-8. Retro-FittingExisting Systems
11-7-1.When Tubes are Extended
11-7.Charging Additional Refrigerant
11-8-1.Use of Existing Units
APPENDIX A Operating Instructions
CS-KS18NKU+ CU-KS18NKU+ CU-KS18NKUA
CS-KS24NKU+ CU-KS24NKU+ CU-KS24NKUA
CS-KS18NKU
Operating Instructions
Split System Air Conditioner
CU-KS18NKU
SAFETY PRECAUTIONS
FEATURES
CONTENTS
PRODUCT INFORMATION
INSTALLATION LOCATION
SAFETY INSTRUCTIONS
ELECTRICAL REQUIREMENTS
•Refrigerant gas leakage may cause fire
Remote Controller
NAMES OF PARTS
Remote Controller Drain Hose Refrigerant Tubes
Air Intakes INDOOR UNIT Air Outlet
UNIT DISPLAY AND OPERATION BUTTON
REMOTE CONTROLLER DISPLAY
REMOTE CONTROLLER
REMOTE CONTROLLER CONTINUED
USING THE REMOTE CONTROLLER
REMOTE CONTROLLER CONTINUED
USING THE REMOTE CONTROLLER CONTINUED
OPERATION WITH THE REMOTE CONTROLLER
1. Operation
OPERATION WITH THE REMOTE CONTROLLER CONTINUED
2.Adjusting the Fan Speed
3.Fan Only
Setting
4. Night Setback Mode
OPERATION WITH THE REMOTE CONTROLLER CONTINUED
temperature
6. HIGH POWER Mode
5. QUIET Mode
OPERATION WITH THE REMOTE CONTROLLER CONTINUED
‘‘DRY’’ Operation
Remote Controller
SPECIAL REMARKS
Cooling Operation
SETTING THE TIMER
1.How to set the present time
SETTING THE TIMER CONTINUED
REPEAT timer
USING THE 1-HOUROFF TIMER
TIPS FOR ENERGY SAVING
ADJUSTING THE AIRFLOW DIRECTION
OPERATION WITHOUT THE REMOTE CONTROLLER
CARE AND CLEANING
CARE AND CLEANING CONTINUED
WIRED REMOTE CONTROLLER
CARE AND CLEANING CONTINUED
Washing the grille with water
Trouble
TROUBLESHOOTING BEFORE CALLING FOR SERVICE
OPERATING RANGE
Possible Cause
Outdoor Unit
SPECIFICATIONS
Model No
Indoor Unit
CS-KS18NKU+ CU-KS18NKU+ CU-KS18NKUA
INSTALLATION INSTRCTIONS
APPENDIX B
CS-KS24NKU+ CU-KS24NKU+ CU-KS24NKUA
Contents
This air conditioner uses the refrigerant R410A
When Installing…
SPECIAL PRECAUTIONS
When Transporting
In Case of Improper Installation
fins of the outdoor unit. You may get injured
When Servicing
Others
accidentally
1-2.Accessories Supplied with Unit Table
1. General
1-1.Tools Required for Installation not supplied
1-3.Optional Copper Tubing Kit
2. Installation Site Selection
About
About
Front
Back
Fig. 5f
1 Recommended dimensions of the baffle plates
Air Intake Baffle
Air Discharge Baffle
Fig. 5g For Air Intake
1. Air Intake Baffle
3 Installation procedure
4 Precautions for installation
2. Air Discharge Baffle
3-1.Remove the Rear Panel from the Unit
3. How to Install the Indoor Unit
trical wiring or conduits are
3-2.Make a Hole
a If Wooden Wall
3-3.Install the Rear Panel on the Wall
Table
b If Block, Brick, Concrete or Similar Type Wall
How to replace the grille
3-4.Remove the Grille to Install the Indoor Unit
How to remove the grille
Fig. 19b
3-5.Shape the Indoor Side Tubing
3-6.Wiring Instructions
General precautions on wiring
Fig.
3-7.Recommended Wire Length and Diameter
Inter-unitwiring Earth plate Lock nut
3-8.Wiring Instructions for Inter-unitConnections
Plasticcover Wiring 10 25 cm
Top of conduit connector
How to connect wiring to the terminal
Fig. 37a
3-9.Mounting
Right-sidetubing
Fig. 37b
Left-sidetubing
To unmount indoor unit
4. How to Install the Outdoor Unit
4-1.Wiring Instructions for the Outdoor Unit
Fig.
5-3.Caution before Connecting Tubes Tightly
5. Refrigerant Tubing
5-2.Flaring Procedure with a Flare Tool
5-1.Use of the Flaring Method
Table
tem. The valve core is similar to
6. Air Purging
Air Purging with a Vacuum Pump for Test Run
those used in automobile tires
Page
How to Test Run the Air Conditioner
Fig. 59a Fig. 59b
Fig. 59c
When opening or closing the service valve stem
Basic Functions of the Service Valves
Pump Down
Pump Down Procedure
Fig. 60c
Service Valve Connections
7. Remote Controller Installation Position
Fig. 60d
Fig.
8. Address Switch
8-1.Address Setting of the Remote Controller
Fig.
Page
DC1111-0