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CS-KS12NB41 & CZ-18BT1U, CU-KS18NKUA Appendix C, CZ-RD515U, Operating Instructions
Models:
CS-KS18B4UW & CZ-18BT1U
CS-KS12NB41 & CZ-18BT1U
CU-KS12NK1A
CU-KS18NKUA
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<
>
Troubleshooting
Specs
Electrical Characteristics
Install
Refrigerant Flow Diagram
Dimension
Maintenance
Wired Remote Controller
Remedy for symptom 3 to
2If the self-diagnosticsfunction fails to operate
Page 118
Image 118
APPENDIX C
Operating Instructions
CZ-RD515U
(852-6-4181-230-00-1)
A-3
Page 117
Page 119
Page 118
Image 118
Page 117
Page 119
Contents
CU-KS12NK1A
CS-KS12NB41Body & CZ-18BT1UPanel
CS-KS18NB4UWBody & CZ-18BT1UPanel
CU-KS18NKU CU-KS18NKUA
SAFETY PRECAUTIONS
which may cause a unit breakdown
REFRIGERANT FLOW DIAGRAM
Table of Contents
SPECIFICATIONS
MAINTENANCE
10. CHECKING ELECTRICAL COMPONENTS
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
INSTALLATION INSTRUCTIONS
11. REFRIGERANT R410A
Temperature
1. OPERATING RANGE
Temperature
Models : CS-KS18NB4UW& CZ-18BT1U+ CU-KS18NKU
2-1-1
2. SPECIFICATIONS
Unit Specifications
CS-KS18NB4UW& CZ-18BT1U
CS-KS18NB4UW& CZ-18BT1U
Dimensions & Weight Indoor Unit
Dimensions & Weight Outdoor Unit
CU-KS18NKU
Outdoor Unit
2-1-2. Indoor Unit
CS-KS18NB4UW& CZ-18BT1U
CU-KS18NKU
CS-KS18NB4UW& CZ-18BT1U
Dimensions & Weight Indoor Unit
Dimensions & Weight Outdoor Unit
CU-KS18NKU
Outdoor Unit CU-KS12NK1A
2-1-3. Indoor Unit
CS-KS12NB41& CZ-18BT1U
Voltage Rating
Dimensions & Weight Outdoor Unit
Dimensions & Weight Indoor Unit
CS-KS12NB41& CZ-18BT1U
Outdoor Unit CU-KS18NKUA
2-1-4. Indoor Unit
CS-KS18NB4UW& CZ-18BT1U
< 230V >
Dimensions & Weight Outdoor Unit
Dimensions & Weight Indoor Unit
CS-KS18NB4UW& CZ-18BT1U
Outdoor Unit CU-KS18NKUA
2-1-5. Indoor Unit
CS-KS18NB4UW& CZ-18BT1U
< 208V >
Indoor Unit
Dimensions & Weight Indoor Unit
Dimensions & Weight Outdoor Unit
CS-KS18NB4UW& CZ-18BT1U
Control PCB
2-2.Major Component Specifications
2-2-1.Indoor Unit
Fan Motor
Drain Pump
Control PCB
Fan Motor
Heat Exchanger Coil
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
Temperature F C
2-3.Other Component Specifications
Temperature F C
Temperature F C
Indoor Unit CS-KS12NB41& CZ-18BT1U
3. DIMENSIONAL DATA
CS-KS18NB4UW& CZ-18BT1U
Unit : inch mm 852-0-0010-12600-0
CU-KS18NKUA
Unit : inch mm 852-0-0010-13300-0
Indoor Unit CS-KS12NB41& CZ-18BT1U
4. REFRIGERANT FLOW DIAGRAM
4-1.Refrigerant Flow Diagram
Outdoor Unit CU-KS12NK1A
Indoor unit
CU-KS18NKUA
Outdoor unit
Indoor Unit CS-KS12NB41& CZ-18BT1U
5-1.Temperature Charts
5. PERFORMANCE DATA
Outdoor Unit CU-KS12NK1A
Indoor Unit CS-KS18NB4UW& CZ-18BT1U
Outdoor Unit CU-KS18NKUor CU-KS18NKUA
CS-KS12NB41& CZ-18BT1U
5-2.Cooling Capacity
CU-KS12NK1A
CS-KS18NB4UW& CZ-18BT1U
Power Supply : 230V Single Phase 60Hz
Indoor Unit
Outdoor Unit
CS-KS12NB41& CZ-18BT1U
5-3.Cooling Capacity Low Ambient
CU-KS12NK1A
CU-KS18NKUA
CS-KS18NB4UW& CZ-18BT1U
SHC : Sensible Heat Capacity BTU/h
Indoor Unit CS-KS12NB41& CZ-18BT1U
6-1.Electrical Characteristics
6. ELECTRICAL DATA
Cooling
Cooling
CS-KS18NB4UW& CZ-18BT1U
CU-KS18NKU
Cooling
CS-KS18NB4UW
6-2.Electric Wiring Diagrams
Indoor Unit
CS-KS12NB41&
Outdoor Unit CU-KS12NK1A
8FA2-5251-12300-2
Outdoor Unit CU-KS18NKU CU-KS18NKUA
Fig.
7. MAINTENANCE
7-1.Address Setting of the Remote Controller
Fig.
How to Connect
How to Disconnect
Pull the cover upward
WARNING attempting to disassemble the unit
7-3.Disassembly Procedure
7-3-1.Remove the air intake grill
Fig.1
Fig.7
7-3-3.Remove the ceiling panel
Fig.6
Fig.8
Fig.10
7-3-4.Remove the indoor air temperature sensor
7-3-5.Remove the power box and control box
Fig.11
Fig.15 44
Fig.13
Fig.14
Screw Ground cable
Fig.17
7-3-6.Remove the main body lower section
Fig.16
Fig.18
Fig.19
7-3-8.Remove the drain pump and float switch
7-3-7.Remove the heat exchanger sensor
Fig.20
Fig.22
7-3-9.Remove the turbo fan and fan motor
7-3-10.Remove the heat exchanger
Fig.23
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
9-2.Method of Self-Diagnostics
9. TROUBLESHOOTING BEFORE CALLING FOR SERVICE
PROCEDURE
HIGH POWER lamp
1 Self-diagnosticsLamps
TIMER lamp
REMOTE CONTROL receiver
Using the TEST/T-RUNterminals
9-3.Checking the Indoor and Outdoor Units
2If the self-diagnosticsfunction fails to operate
Check the indoor unit Is the fuse blown?
< Before the Operation >
3-1Condition: E01
Continued from the previous page A
3-2Condition: E12
Diagnostic procedure
9-4.Trouble Diagnosis of Fan Motor
9-4-1.Indoor Fan Motor
Diagnostic results
Diagnostic results
9-4-2.Outdoor Fan Motor
Diagnostic procedure
Remedy for symptom 3 to
Locations most susceptible to noise
1 Noise malfunction
2 Electromagnetic interference
Trouble
10-1.Measurement of Insulation Resistance
10-1-1.Power Supply Cord
10. CHECKING ELECTRICAL COMPONENTS
10-1-2.Indoor Unit
Fig.
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
For servicing, use the following tools for R410A
11-4.Tubing Installation Procedures
11-3.Tools Specifically for R410A
Tool Distinction
1 Recovering refrigerant
11-5-1.Procedure for Replacing Compressor
11-5.In Case of Compressor Malfunction
2 Replacing Compressor
Never charge a large amount
Configuration and characteristics of cylinders
5 Recharging
Example
1 Detecting Leaks
11-6.In Case Refrigerant is Leaking
2 Recovering refrigerant
3 Welding leaking points
11-8. Retro-FittingExisting Systems
11-7-1.When Tubes are Extended
11-7.Charging Additional Refrigerant
11-8-1.Use of Existing Units
Page
APPENDIX A
Operating Instructions
CU-KS18NKUA
Split System Air Conditioner
CS-KS12NB41 CU-KS12NK1A CS-KS18NB4UW CU-KS18NKU
CU-3KS19NBU CU-4KS24NBU CU-4KS31NBU
SAFETY PRECAUTIONS
FEATURES
CONTENTS
PRODUCT INFORMATION
ELECTRICAL REQUIREMENTS
INSTALLATION LOCATION
SAFETY INSTRUCTIONS
Avoid
Air Intake
NAMES OF PARTS
UNIT DISPLAY AND OPERATION BUTTON
Air Outlet
REMOTE CONTROLLER DISPLAY
Symbols
ON TIME/OFF TIME setting buttons Advance button
REMOTE CONTROLLER
HIGH POWER button
CANCEL button SENSOR button
Sensor
1 HR. TIMER button 1-HOUROFF TIMER
Temperature setting buttons TEMP
ON/OFF operation button
HOW TO USE THE REMOTE CONTROLLER
USING THE REMOTE CONTROLLER
HOW TO INSTALL BATTERIES
REMOTE CONTROLLER INSTALLATION POSITION
1. Operation
OPERATION WITH THE REMOTE CONTROLLER
2. Adjusting the Fan Speed
3. Fan Only
Power failure during operation
SETTING THE TIMER
5. HIGH POWER Mode
Remote Controller
3. How to set the ON time
1. How to set the present time
2. How to set the OFF time
4. How to set daily ON/OFF repeat timer
1. 1-HourOFF Timer
USING THE 1-HOUROFF TIMER
ADJUSTING THE AIRFLOW DIRECTION
TIPS FOR ENERGY SAVING
When the air conditioner is not running
CARE AND CLEANING
OPERATION WITHOUT THE REMOTE CONTROLLER
Cleaning the flaps
Safety cord Air filter
How to remove the filter
How to remove the air intake grille
Air intake grille hinge Safety cord
BEFORE CALLING FOR SERVICE
TROUBLESHOOTING
WIRED REMOTE CONTROLLER
OPERATING RANGE
Outdoor Unit
SPECIFICATIONS
Model No
Indoor Unit
Model No
•For Multiple use
•For Multiple use
Indoor Unit
INSTALLATION INSTRUCTIONS
APPENDIX B
4. HOW TO INSTALL THE OUTDOOR UNIT
Contents
3. HOW TO INSTALL THE INDOOR UNIT
7.REMOTE CONTROLLER INSTALLATION
When Transporting
SPECIAL PRECAUTIONS
In Case of Improper Installation
When Installing…
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
AVOID
2. Installation Site Selection
2-1.Indoor Unit
Fig.
Fig. 4a
2-2.Outdoor Unit AVOID
Fig. CU-KS12NK1A
CU-KS18NKU, CU-KS18NKUA
Back
Front
Fig. 5c
1Recommended dimensions of the baffle plates
Air Intake Baffle
Air Discharge Baffle
CU-KS12NK1A
Air Discharge Baffle
1Recommended dimensions of the baffle plates
Air Intake Baffle
CU-KS18NKUA
2.Air Discharge Baffle
3 Installation procedure CU-KS12NK1A
1. Air Intake Baffle
Fig. 5h
1. Air Intake Baffle
4 Precautions for installation
CU-KS18NKUA
2. Air Discharge Baffle
3-2.Suspending the Indoor Unit
3. How to Install the Indoor Unit
3-1.Preparation for Suspending
3-3.Placing the Unit Inside the Ceiling
Fig.
3-4.Installing the Drain Piping
Do not use natural drainage
Fig.
3-5.Checking the Drainage
3-6.How to Install the Ceiling Panel
3-6-1.Before Installing the Ceiling Panel
Fig. 6-10a
Fig.
3-6-2.Installing the Ceiling Panel
Fig.
Fig.
Fig.
3-6-3.Wiring the Ceiling Panel and the Indicator
Fig.
A. Attaching the corner cover
3-7.Wiring Instructions
3-6-5.Checking After Installation
3-6-7.Adjusting the Auto Flap
General precautions on wiring
Table
Each wire must be firmly connected
WIRING SYSTEM DIAGRAM CU-KS12NK1A
Otherwise, electrical shock may occur
For solid core wiring or F-cable
3-9.Wiring Instructions for Inter-unitConnections
How to connect wiring to the terminal
Fig.
4-1.Wiring Instructions for the Outdoor Unit
4. How to Install the Outdoor Unit
For stranded wiring
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
Fig.
Table
5-5.Insulation of Refrigerant Tubing
Fig.
5-6.Taping the Tubes
6. Air Purging
5-7.Finishing the Installation
Air Purging with a Vacuum Pump for Test Run
wrench before attempting to turn the valve
Table
Be sure to completely insert the hex
Fig.
Fig. Fig.
How to Test Run the Air Conditioner
Fig.
ing the service valve
Basic Functions of the Service Valves
Pump Down
Pump Down Procedure
Remote control holder
Service Valve Connections
7. Remote Controller Installation Position
Table
Fig.
8. Address Switch
8-1.Address Setting of the Remote Controller
Fig.
Page
CZ-RD515U
APPENDIX C
Operating Instructions
Operating Instructions Wired Remote Controller
Model No. CZ-RD515U
SAFETY PRECAUTIONS
FEATURES
CONTENTS
PRODUCT INFORMATION
ELECTRICAL REQUIREMENTS
INSTALLATION LOCATION
SAFETY INSTRUCTIONS
Avoid
Timer and Present Time setting buttons
REMOTE CONTROLLER
Temperature setting buttons TEMP
Display
AUTO
1 HR. TIMER button 1-HOUROFF TIMER
TIMER SELECT button
HEAT
Symbols
REMOTE CONTROLLER DISPLAY
1Operation mode AUTO only for COOL/DRY/HEAT Model
2. Manual Operation
1.Automatic Operation
only for COOL/DRY/HEAT Model
OPERATION WITH THE REMOTE CONTROLLER
4. Fan Only
3. Adjusting the Fan Speed
Remote Controller Display
5. Night Setback Mode
1. How to set the present time
5. Backup function
SETTING THE TIMER
2. How to set the OFF time
1. 1-HourOFF Timer
USING THE 1-HOUROFF TIMER
ADJUSTING THE AIRFLOW DIRECTION
Setting procedure
Page
INSTALLATION INSTRUCTIONS
APPENDIX D
CZ-RD515U
Remote controller installation guidelines
INSTALLATION INSTRUCTIONS Wired Remote Controller
Parts supplied with the remote controller
How to install the remote controller
Fig. 2-a
A. Installing with in-walljunction box
B. Installing directly onto the wall
Fig. 2-b
Fig. 8-a
How to wire the remote controller
Fig.
Fig.
Fig.
How to Test Run the Air Conditioner
Fig.
Fig. WI1011-0 Printed in China
Page
DC1111-0
