CS-KE30NKU+ CU-KE30NKU CS-KE36NKU+ CU-KE36NKU
Indoor Unit
Outdoor Unit
TECHNICAL & SERVICE MANUAL
SAFETY PRECAUTIONS
which may cause a unit breakdown
Table of Contents
SPECIFICATIONS
REFRIGERANT FLOW DIAGRAM
8. TROUBLESHOOTING BEFORE CALLING FOR SERVICE
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
INSTALLAION INSTRUCTIONS
9. CHECKING ELECTRICAL COMPONENTS
10. REFRIGERANT R410A
1. OPERATING RANGE
Temperature
Indoor Air Intake Temp
Outdoor Air Intake Temp
2. SPECIFICATIONS
2-1.Unit Specifications
Features
Weight
Indoor Unit
CS-KE30NKU
Outdoor Unit
CU-KE30NKU
CS-KE36NKU
CU-KE36NKU
Voltage Rating
Performance
CS-KE36NKU
CU-KE36NKU
Voltage Rating
Performance
2-2.Major Component Specifications
2-2-1.Indoor Unit
Control PCB
Fan Motor
Indoor Unit CS-KE36NKU
Control PCB
Fan Motor
Flap Motor
2-2-2.Outdoor Unit
P.C.Board
Compressor
Fan Motor
P.C.Board
Compressor
Fan Motor
Heat Exchanger Coil
2-3.Other Component Specifications
3. DIMENSIONAL DATA
CS-KE36NKU
CU-KE36NKU
inchmm
194-00-1
Unit
4. REFRIGERANT FLOW DIAGRAM
4-1.Refrigerant Flow Diagram
5-1.Temperature Charts
5. PERFORMANCE DATA
1 High pressure performance chart
2 Operating current performance chart
3 Indoor discharge air performance chart
Indoor Unit CS-KE30NKU Outdoor Unit CU-KE30NKU
1 Low pressure performance chart
2 Operating current performance chart
3 Indoor discharge air performance chart
Indoor Unit CS-KE36NKU Outdoor Unit CU-KE36NKU
discharge
CU-KE30NKU
5-2.Cooling Capacity
CS-KE30NKU
CS-KE36NKU
CU-KE36NKU
CU-KE30NKU
5-3.Cooling Capacity Low Ambient
CS-KE30NKU
CS-KE36NKU
CU-KE36NKU
CU-KE30NKU
5-4.Heating Capacity
CS-KE30NKU
CS-KE36NKU
CU-KE36NKU
5-5.Air Throw Distance Charts
Cooling
6-1.Electrical Characteristics
6. ELECTRICAL DATA
CS-KE36NKU
CU-KE36NKU
1 Voltage:230V
Cooling
6-2.Electric Wiring Diagrams
CONTROLLER
8FA2-5251-15200-0
Outdoor Unit CU-KE30NKU
CU-KE36NKU
7. FUNCTIONS
7-1.Operation Functions
Emergency operation
AUTO cooling/heating operation
HIGH POWER
Timer backup
NIGHT SETBACK
Lamp colors
Noise Reducing Control Outdoor Unit
<Switching Procedure to Noise Reducing Control>
<Operation Sound>
Fig.3 Control P.C.Board Fig.2 View from front
Maximum Current Value Change Function
<Maximum Current Value Change Procedure>
Description of function
Fig.4 Control P.C.Board
Compressor discharge temperature control
7-2.Protective Functions
Overload prevention during heating
Freeze prevention
Defrosting Sequence
Defrost detection and release
CT Peak current cut-offcontrol
PROCEDURE
8. TROUBLESHOOTING BEFORE CALLING FOR SERVICE
8-2.Method of Self-Diagnostics
2 TIMER lamp
DIAGNOSIS CONTENTS
INDOOR UNIT
1 OPERATION lamp
2If the self-diagnosticsfunction fails to operate
Check the power voltage Blown
Check the indoor unit Is the fuse blown?
Normal
8-3.Checking the Indoor and Outdoor Units
3-1Alarm Code : E05
< Before the Operation >
Continued from the previous page A
3-2Alarm Code : E07/P04/P05/P20/P27
8-4.Trouble Diagnosis of Fan Motor
8-4-1.Indoor Fan Motor
8-4-2.Outdoor Fan Motor
Diagnostic procedure
Diagnostic results
Remedy for symptom 3 to
Locations most susceptible to noise
Trouble
Correction
Locations most susceptible to noise
9-1-1.Power Supply Cord
9. CHECKING ELECTRICAL COMPONENTS
9-1.Measurement of Insulation Resistance
9-1-2.Indoor Unit
Fig.
9-2.Checking Continuity of Fuse on PCB Assy
Fig.
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
10-1.Characteristics of New Refrigerant R410A
10-1-1.What is New Refrigerant R410A?
10-1-3.Characteristics
10-2.Checklist before Servicing
Tubing precautions
Size of flare
No addition of compressor oil for R410A
10-4.Tubing Installation Procedures
10-3.Tools Specifically for R410A
10-5-1.Procedure for Replacing Compressor
10-5.In Case of Compressor Malfunction
Page
10-6.In Case Refrigerant is Leaking
10-7-1.When Tubes are Extended
10-7.Charging Additional Refrigerant
10-8. Retro-FittingExisting Systems
10-8-1.Use of Existing Units
APPENDIX A Operating Instructions
CS-KE30NKU+ CU-KE30NKU CS-KE36NKU+ CU-KE36NKU
Operating Instructions
Split System Air Conditioner
CS-KE30NKU
CS-KE36NKU
FEATURES
CONTENTS
SAFETY PRECAUTIONS
PRODUCT INFORMATION
ELECTRICAL REQUIREMENTS
INSTALLATION LOCATION
SAFETY INSTRUCTIONS
NAMES OF PARTS
UNIT DISPLAY AND OPERATION BUTTON
REMOTE CONTROLLER DISPLAY
Symbols
REMOTE CONTROLLER
ON TIME/OFF TIME setting buttons Advance button
CANCEL button SENSOR button
ADDRESS switch
1 HR. TIMER button 1-HOUROFF TIMER
Temperature setting buttons TEMP
HIGH POWER button
Sensor
USING THE REMOTE CONTROLLER
HOW TO INSTALL BATTERIES
HOW TO USE THE REMOTE CONTROLLER
REMOTE CONTROLLER INSTALLATION POSITION
OPERATION WITH THE REMOTE CONTROLLER
1. Automatic Operation
2. Manual Operation
STEP STEP
3. Adjusting the Fan Speed
4. Fan Only
5. Night Setback Mode
6. QUIET Mode
7. HIGH POWER Mode
8. UNOCCUPIED Mode
Unoccupied Indication
Unoccupied
Power failure during operation
Remote Controller
SPECIAL REMARKS
‘‘DRY’’ Operation
SETTING THE TIMER
1. How to set the present time
2. How to set the OFF time
3. How to set the ON time
USING THE 1-HOUROFF TIMER
4. How to set daily ON/OFF repeat timer
1. 1-HourOFF Timer
TIPS FOR ENERGY SAVING
ADJUSTING THE AIRFLOW DIRECTION
OPERATION WITHOUT THE REMOTE CONTROLLER
1. Horizontal
2. Vertical
How to replace the filter
Cleaning the main unit and Remote Controller
Removing and remounting the front panel
Washing the front panel with water
OPERATING RANGE
WIRED REMOTE CONTROLLER
TROUBLESHOOTING BEFORE CALLING FOR SERVICE
SPECIFICATIONS
Model No
Outdoor Unit
Indoor Unit
Page
APPENDIX B INSTALLATION INSTRUCTIONS
CS-KE30NKU+ CU-KE30NKU CS-KE36NKU+ CU-KE36NKU
Contents
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SPECIAL PRECAUTIONS
When Transporting
When Installing…
In Case of Improper Installation
When Servicing
Others
fins of the outdoor unit. You may get injured
accidentally
1. General
1-1.Tools Required for Installation not supplied
1-2.Accessories Supplied with Unit Table
1-3.Optional Copper Tubing Kit
2. Installation Site Selection
Page
Countermeasures against snow and wind
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Fig. 5e
2-2-3.Dimensions of Wind-proofDuct
Reference diagram for CU-KE30NKU, CU-KE36NKU
Unit: inch
Unit: inch
Required space around the outdoor unit
2-2-4.Dimensions of Snow-proofDuct
Reference diagram for CU-KE30NKU, CU-KE36NKU
Reference diagram for snow-proofduct
Space requirements for setting
CU-KE30NKU, CU-KE36NKUwith STK-BDV80E
Obstacle to the rear of unit
Installation in front-rearrows
Obstacles to the front and rear of unit
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3. How to Install the Indoor Unit
3-3.Install the Rear Panel on the Wall
Table
a If Wooden Wall
b If Block, Brick, Concrete or Similar Type Wall
3-4.Removing and Installing the Grille
How to remove the grille
How to replace the grille
Fig. 17a
3-6.Wiring Instructions
General precautions on wiring
3-5.Shape the Indoor Side Tubing
Fig.
3-7.Wire Size and Length
3-8.Wiring Instructions for Inter-unitConnections
Fig.
Fig.
Fig.
How to connect wiring to the terminal
3-9.Mounting
Right-sidetubing
Fig. 37a
Fig. 37b
Switching drain hose and drain cap
Left-sidetubing
Drain hose
Drain cap
To unmount indoor unit
4. How to Install the Outdoor Unit
4-1.Wiring Instructions for the Outdoor Unit
4-2.Routing the Tubing and Wiring
Fig.46a
5. Refrigerant Tubing
5-2.Flaring Procedure with a Flare Tool
5-3.Caution before Connecting Tubes Tightly
5-1.Use of the Flaring Method
Table
6. Air Purging
Be sure to completely insert
the hex wrench before
attempting to turn the valve
Fig.
Fig. 59c
How to Test Run the Air Conditioner
Fig. 59a Fig. 59b
Basic Functions of the Service Valves
Pump Down
Service Valve Connections
7. Remote Controller Installation Position
8. Address Switch
8-1.Address Setting of the Remote Controller
Fig.
Fig.
DC1111-0