Manuals
/
Panasonic
/
Household Appliance
/
Air Conditioner
Panasonic
CS-KS18B4UW & CZ-18BT1U, CU-KS18NKUA, CU-KS12NK1A, CS-KS12NB41 & CZ-18BT1U service manual
Models:
CS-KS18B4UW & CZ-18BT1U
CS-KS12NB41 & CZ-18BT1U
CU-KS12NK1A
CU-KS18NKUA
1
135
136
136
Download
136 pages
28.94 Kb
129
130
131
132
133
134
135
136
<
>
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 135
Image 135
Page 134
Page 136
Page 135
Image 135
Page 134
Page 136
Contents
CU-KS18NKU CU-KS18NKUA
CS-KS12NB41Body & CZ-18BT1UPanel
CS-KS18NB4UWBody & CZ-18BT1UPanel
CU-KS12NK1A
SAFETY PRECAUTIONS
which may cause a unit breakdown
MAINTENANCE
Table of Contents
SPECIFICATIONS
REFRIGERANT FLOW DIAGRAM
11. REFRIGERANT R410A
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
INSTALLATION INSTRUCTIONS
10. CHECKING ELECTRICAL COMPONENTS
Models : CS-KS18NB4UW& CZ-18BT1U+ CU-KS18NKU
1. OPERATING RANGE
Temperature
Temperature
CS-KS18NB4UW& CZ-18BT1U
2. SPECIFICATIONS
Unit Specifications
2-1-1
CU-KS18NKU
Dimensions & Weight Indoor Unit
Dimensions & Weight Outdoor Unit
CS-KS18NB4UW& CZ-18BT1U
CU-KS18NKU
2-1-2. Indoor Unit
CS-KS18NB4UW& CZ-18BT1U
Outdoor Unit
CU-KS18NKU
Dimensions & Weight Indoor Unit
Dimensions & Weight Outdoor Unit
CS-KS18NB4UW& CZ-18BT1U
Voltage Rating
2-1-3. Indoor Unit
CS-KS12NB41& CZ-18BT1U
Outdoor Unit CU-KS12NK1A
Dimensions & Weight Indoor Unit
Dimensions & Weight Outdoor Unit
CS-KS12NB41& CZ-18BT1U
< 230V >
2-1-4. Indoor Unit
CS-KS18NB4UW& CZ-18BT1U
Outdoor Unit CU-KS18NKUA
Dimensions & Weight Indoor Unit
Dimensions & Weight Outdoor Unit
CS-KS18NB4UW& CZ-18BT1U
< 208V >
2-1-5. Indoor Unit
CS-KS18NB4UW& CZ-18BT1U
Outdoor Unit CU-KS18NKUA
CS-KS18NB4UW& CZ-18BT1U
Dimensions & Weight Indoor Unit
Dimensions & Weight Outdoor Unit
Indoor Unit
Fan Motor
2-2.Major Component Specifications
2-2-1.Indoor Unit
Control PCB
Heat Exchanger Coil
Control PCB
Fan Motor
Drain Pump
Fan Motor
2-2-2.Outdoor Unit
Control PCB
Compressor
Heat Exchanger Coil
Control PCB
Compressor
Fan Motor
Heat Exchanger Coil
Control PCB
Compressor
Fan Motor
Temperature F C
2-3.Other Component Specifications
Temperature F C
Temperature F C
3. DIMENSIONAL DATA
Indoor Unit CS-KS12NB41& CZ-18BT1U
CS-KS18NB4UW& CZ-18BT1U
Unit : inch mm 852-0-0010-12600-0
Unit : inch mm 852-0-0010-13300-0
CU-KS18NKUA
Outdoor Unit CU-KS12NK1A
4. REFRIGERANT FLOW DIAGRAM
4-1.Refrigerant Flow Diagram
Indoor Unit CS-KS12NB41& CZ-18BT1U
CU-KS18NKUA
Indoor unit
Outdoor unit
Outdoor Unit CU-KS12NK1A
5-1.Temperature Charts
5. PERFORMANCE DATA
Indoor Unit CS-KS12NB41& CZ-18BT1U
Outdoor Unit CU-KS18NKUor CU-KS18NKUA
Indoor Unit CS-KS18NB4UW& CZ-18BT1U
5-2.Cooling Capacity
CS-KS12NB41& CZ-18BT1U
CU-KS12NK1A
Outdoor Unit
Power Supply : 230V Single Phase 60Hz
Indoor Unit
CS-KS18NB4UW& CZ-18BT1U
5-3.Cooling Capacity Low Ambient
CS-KS12NB41& CZ-18BT1U
CU-KS12NK1A
CS-KS18NB4UW& CZ-18BT1U
CU-KS18NKUA
SHC : Sensible Heat Capacity BTU/h
Cooling
6-1.Electrical Characteristics
6. ELECTRICAL DATA
Indoor Unit CS-KS12NB41& CZ-18BT1U
Cooling
CS-KS18NB4UW& CZ-18BT1U
CU-KS18NKU
Cooling
CS-KS12NB41&
6-2.Electric Wiring Diagrams
Indoor Unit
CS-KS18NB4UW
8FA2-5251-12300-2
Outdoor Unit CU-KS12NK1A
Outdoor Unit CU-KS18NKU CU-KS18NKUA
Fig.
7. MAINTENANCE
7-1.Address Setting of the Remote Controller
Fig.
How to Disconnect
How to Connect
Pull the cover upward
Fig.1
7-3.Disassembly Procedure
7-3-1.Remove the air intake grill
WARNING attempting to disassemble the unit
Fig.8
7-3-3.Remove the ceiling panel
Fig.6
Fig.7
Fig.11
7-3-4.Remove the indoor air temperature sensor
7-3-5.Remove the power box and control box
Fig.10
Screw Ground cable
Fig.13
Fig.14
Fig.15 44
Fig.18
7-3-6.Remove the main body lower section
Fig.16
Fig.17
Fig.20
7-3-8.Remove the drain pump and float switch
7-3-7.Remove the heat exchanger sensor
Fig.19
Fig.23
7-3-9.Remove the turbo fan and fan motor
7-3-10.Remove the heat exchanger
Fig.22
SENSOR DRY
8. FUNCTIONS
8-1.Operation Functions
Emergency operation
Lamp colors
HIGH POWER
Timer backup
NIGHT SETBACK
CT Peak current cut-offcontrol
Compressor discharge temperature control
8-2.Protective Functions
Freeze prevention
9. TROUBLESHOOTING BEFORE CALLING FOR SERVICE
9-2.Method of Self-Diagnostics
PROCEDURE
REMOTE CONTROL receiver
1 Self-diagnosticsLamps
TIMER lamp
HIGH POWER lamp
Check the indoor unit Is the fuse blown?
9-3.Checking the Indoor and Outdoor Units
2If the self-diagnosticsfunction fails to operate
Using the TEST/T-RUNterminals
3-1Condition: E01
< Before the Operation >
Continued from the previous page A
3-2Condition: E12
Diagnostic results
9-4.Trouble Diagnosis of Fan Motor
9-4-1.Indoor Fan Motor
Diagnostic procedure
Remedy for symptom 3 to
9-4-2.Outdoor Fan Motor
Diagnostic procedure
Diagnostic results
Trouble
1 Noise malfunction
2 Electromagnetic interference
Locations most susceptible to noise
10-1-2.Indoor Unit
10-1-1.Power Supply Cord
10. CHECKING ELECTRICAL COMPONENTS
10-1.Measurement of Insulation Resistance
10-2.Checking Continuity of Fuse on PCB Assy
Fig.
Fig.
11-1-3.Characteristics
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
11-1.Characteristics of New Refrigerant R410A
11-1-1.What is New Refrigerant R410A?
No addition of compressor oil for R410A
11-2.Checklist before Servicing
Tubing precautions
Size of flare
Tool Distinction
11-4.Tubing Installation Procedures
11-3.Tools Specifically for R410A
For servicing, use the following tools for R410A
2 Replacing Compressor
11-5-1.Procedure for Replacing Compressor
11-5.In Case of Compressor Malfunction
1 Recovering refrigerant
Example
Configuration and characteristics of cylinders
5 Recharging
Never charge a large amount
3 Welding leaking points
11-6.In Case Refrigerant is Leaking
2 Recovering refrigerant
1 Detecting Leaks
11-8-1.Use of Existing Units
11-7-1.When Tubes are Extended
11-7.Charging Additional Refrigerant
11-8. Retro-FittingExisting Systems
Page
Operating Instructions
APPENDIX A
CU-3KS19NBU CU-4KS24NBU CU-4KS31NBU
Split System Air Conditioner
CS-KS12NB41 CU-KS12NK1A CS-KS18NB4UW CU-KS18NKU
CU-KS18NKUA
PRODUCT INFORMATION
FEATURES
CONTENTS
SAFETY PRECAUTIONS
Avoid
INSTALLATION LOCATION
SAFETY INSTRUCTIONS
ELECTRICAL REQUIREMENTS
Air Outlet
NAMES OF PARTS
UNIT DISPLAY AND OPERATION BUTTON
Air Intake
Symbols
REMOTE CONTROLLER DISPLAY
CANCEL button SENSOR button
REMOTE CONTROLLER
HIGH POWER button
ON TIME/OFF TIME setting buttons Advance button
ON/OFF operation button
1 HR. TIMER button 1-HOUROFF TIMER
Temperature setting buttons TEMP
Sensor
REMOTE CONTROLLER INSTALLATION POSITION
USING THE REMOTE CONTROLLER
HOW TO INSTALL BATTERIES
HOW TO USE THE REMOTE CONTROLLER
3. Fan Only
OPERATION WITH THE REMOTE CONTROLLER
2. Adjusting the Fan Speed
1. Operation
Remote Controller
SETTING THE TIMER
5. HIGH POWER Mode
Power failure during operation
4. How to set daily ON/OFF repeat timer
1. How to set the present time
2. How to set the OFF time
3. How to set the ON time
TIPS FOR ENERGY SAVING
USING THE 1-HOUROFF TIMER
ADJUSTING THE AIRFLOW DIRECTION
1. 1-HourOFF Timer
Cleaning the flaps
CARE AND CLEANING
OPERATION WITHOUT THE REMOTE CONTROLLER
When the air conditioner is not running
Air intake grille hinge Safety cord
How to remove the filter
How to remove the air intake grille
Safety cord Air filter
OPERATING RANGE
TROUBLESHOOTING
WIRED REMOTE CONTROLLER
BEFORE CALLING FOR SERVICE
Indoor Unit
SPECIFICATIONS
Model No
Outdoor Unit
Indoor Unit
•For Multiple use
•For Multiple use
Model No
APPENDIX B
INSTALLATION INSTRUCTIONS
7.REMOTE CONTROLLER INSTALLATION
Contents
3. HOW TO INSTALL THE INDOOR UNIT
4. HOW TO INSTALL THE OUTDOOR UNIT
When Installing…
SPECIAL PRECAUTIONS
In Case of Improper Installation
When Transporting
accidentally
When Servicing
Others
fins of the outdoor unit. You may get injured
1-3.Optional Copper Tubing Kit
1. General
1-1.Tools Required for Installation not supplied
1-2.Accessories Supplied with Unit Table
Fig.
2. Installation Site Selection
2-1.Indoor Unit
AVOID
CU-KS18NKU, CU-KS18NKUA
2-2.Outdoor Unit AVOID
Fig. CU-KS12NK1A
Fig. 4a
Front
Back
Fig. 5c
CU-KS12NK1A
Air Intake Baffle
Air Discharge Baffle
1Recommended dimensions of the baffle plates
CU-KS18NKUA
1Recommended dimensions of the baffle plates
Air Intake Baffle
Air Discharge Baffle
Fig. 5h
3 Installation procedure CU-KS12NK1A
1. Air Intake Baffle
2.Air Discharge Baffle
2. Air Discharge Baffle
4 Precautions for installation
CU-KS18NKUA
1. Air Intake Baffle
3-3.Placing the Unit Inside the Ceiling
3. How to Install the Indoor Unit
3-1.Preparation for Suspending
3-2.Suspending the Indoor Unit
Fig.
3-4.Installing the Drain Piping
Do not use natural drainage
Fig.
Fig. 6-10a
3-6.How to Install the Ceiling Panel
3-6-1.Before Installing the Ceiling Panel
3-5.Checking the Drainage
Fig.
3-6-2.Installing the Ceiling Panel
Fig.
Fig.
A. Attaching the corner cover
3-6-3.Wiring the Ceiling Panel and the Indicator
Fig.
Fig.
General precautions on wiring
3-6-5.Checking After Installation
3-6-7.Adjusting the Auto Flap
3-7.Wiring Instructions
Otherwise, electrical shock may occur
Each wire must be firmly connected
WIRING SYSTEM DIAGRAM CU-KS12NK1A
Table
Fig.
3-9.Wiring Instructions for Inter-unitConnections
How to connect wiring to the terminal
For solid core wiring or F-cable
Fig.
4. How to Install the Outdoor Unit
For stranded wiring
4-1.Wiring Instructions for the Outdoor Unit
5-1.Use of the Flaring Method
5. Refrigerant Tubing
5-2.Flaring Procedure with a Flare Tool
5-3.Caution before Connecting Tubes Tightly
Fig.
Table
5-5.Insulation of Refrigerant Tubing
Fig.
Air Purging with a Vacuum Pump for Test Run
6. Air Purging
5-7.Finishing the Installation
5-6.Taping the Tubes
Fig.
Table
Be sure to completely insert the hex
wrench before attempting to turn the valve
How to Test Run the Air Conditioner
Fig. Fig.
Fig.
Pump Down Procedure
Basic Functions of the Service Valves
Pump Down
ing the service valve
Table
Service Valve Connections
7. Remote Controller Installation Position
Remote control holder
Fig.
8. Address Switch
8-1.Address Setting of the Remote Controller
Fig.
Page
APPENDIX C
CZ-RD515U
Operating Instructions
Model No. CZ-RD515U
Operating Instructions Wired Remote Controller
PRODUCT INFORMATION
FEATURES
CONTENTS
SAFETY PRECAUTIONS
Avoid
INSTALLATION LOCATION
SAFETY INSTRUCTIONS
ELECTRICAL REQUIREMENTS
Display
REMOTE CONTROLLER
Temperature setting buttons TEMP
Timer and Present Time setting buttons
HEAT
1 HR. TIMER button 1-HOUROFF TIMER
TIMER SELECT button
AUTO
REMOTE CONTROLLER DISPLAY
Symbols
1Operation mode AUTO only for COOL/DRY/HEAT Model
OPERATION WITH THE REMOTE CONTROLLER
1.Automatic Operation
only for COOL/DRY/HEAT Model
2. Manual Operation
5. Night Setback Mode
3. Adjusting the Fan Speed
Remote Controller Display
4. Fan Only
2. How to set the OFF time
5. Backup function
SETTING THE TIMER
1. How to set the present time
Setting procedure
USING THE 1-HOUROFF TIMER
ADJUSTING THE AIRFLOW DIRECTION
1. 1-HourOFF Timer
Page
APPENDIX D
INSTALLATION INSTRUCTIONS
CZ-RD515U
How to install the remote controller
INSTALLATION INSTRUCTIONS Wired Remote Controller
Parts supplied with the remote controller
Remote controller installation guidelines
Fig. 2-b
A. Installing with in-walljunction box
B. Installing directly onto the wall
Fig. 2-a
Fig.
How to wire the remote controller
Fig.
Fig. 8-a
Fig. WI1011-0 Printed in China
How to Test Run the Air Conditioner
Fig.
Fig.
Page
DC1111-0
