Indoor Unit
CS-KE30NKU+ CU-KE30NKU CS-KE36NKU+ CU-KE36NKU
Outdoor Unit
TECHNICAL & SERVICE MANUAL
SAFETY PRECAUTIONS
which may cause a unit breakdown
SPECIFICATIONS
Table of Contents
REFRIGERANT FLOW DIAGRAM
8. TROUBLESHOOTING BEFORE CALLING FOR SERVICE
INSTALLAION INSTRUCTIONS
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
9. CHECKING ELECTRICAL COMPONENTS
10. REFRIGERANT R410A
Temperature
1. OPERATING RANGE
Indoor Air Intake Temp
Outdoor Air Intake Temp
2-1.Unit Specifications
2. SPECIFICATIONS
Features
Weight
CS-KE30NKU
Indoor Unit
Outdoor Unit
CU-KE30NKU
CU-KE36NKU
CS-KE36NKU
Voltage Rating
Performance
CU-KE36NKU
CS-KE36NKU
Voltage Rating
Performance
2-2-1.Indoor Unit
2-2.Major Component Specifications
Control PCB
Fan Motor
Control PCB
Indoor Unit CS-KE36NKU
Fan Motor
Flap Motor
P.C.Board
2-2-2.Outdoor Unit
Compressor
Fan Motor
Compressor
P.C.Board
Fan Motor
Heat Exchanger Coil
2-3.Other Component Specifications
CS-KE36NKU
3. DIMENSIONAL DATA
inchmm
CU-KE36NKU
194-00-1
Unit
4-1.Refrigerant Flow Diagram
4. REFRIGERANT FLOW DIAGRAM
5. PERFORMANCE DATA
5-1.Temperature Charts
2 Operating current performance chart
1 High pressure performance chart
3 Indoor discharge air performance chart
Indoor Unit CS-KE30NKU Outdoor Unit CU-KE30NKU
2 Operating current performance chart
1 Low pressure performance chart
3 Indoor discharge air performance chart
Indoor Unit CS-KE36NKU Outdoor Unit CU-KE36NKU
discharge
CS-KE30NKU
5-2.Cooling Capacity
CU-KE30NKU
CU-KE36NKU
CS-KE36NKU
CS-KE30NKU
5-3.Cooling Capacity Low Ambient
CU-KE30NKU
CU-KE36NKU
CS-KE36NKU
CS-KE30NKU
5-4.Heating Capacity
CU-KE30NKU
CU-KE36NKU
CS-KE36NKU
5-5.Air Throw Distance Charts
Cooling
6. ELECTRICAL DATA
6-1.Electrical Characteristics
CU-KE36NKU
CS-KE36NKU
1 Voltage:230V
Cooling
CONTROLLER
6-2.Electric Wiring Diagrams
CU-KE36NKU
Outdoor Unit CU-KE30NKU
8FA2-5251-15200-0
7-1.Operation Functions
7. FUNCTIONS
Emergency operation
AUTO cooling/heating operation
Timer backup
HIGH POWER
NIGHT SETBACK
Lamp colors
<Switching Procedure to Noise Reducing Control>
Noise Reducing Control Outdoor Unit
<Operation Sound>
Fig.3 Control P.C.Board Fig.2 View from front
<Maximum Current Value Change Procedure>
Maximum Current Value Change Function
Description of function
Fig.4 Control P.C.Board
7-2.Protective Functions
Compressor discharge temperature control
Overload prevention during heating
Freeze prevention
CT Peak current cut-offcontrol
Defrost detection and release
Defrosting Sequence
8-2.Method of Self-Diagnostics
8. TROUBLESHOOTING BEFORE CALLING FOR SERVICE
PROCEDURE
DIAGNOSIS CONTENTS
2 TIMER lamp
INDOOR UNIT
1 OPERATION lamp
Check the power voltage Blown
2If the self-diagnosticsfunction fails to operate
Check the indoor unit Is the fuse blown?
Normal
8-3.Checking the Indoor and Outdoor Units
< Before the Operation >
3-1Alarm Code : E05
Continued from the previous page A
3-2Alarm Code : E07/P04/P05/P20/P27
8-4-1.Indoor Fan Motor
8-4.Trouble Diagnosis of Fan Motor
Diagnostic procedure
8-4-2.Outdoor Fan Motor
Diagnostic results
Remedy for symptom 3 to
Trouble
Locations most susceptible to noise
Correction
Locations most susceptible to noise
9. CHECKING ELECTRICAL COMPONENTS
9-1-1.Power Supply Cord
9-1.Measurement of Insulation Resistance
9-1-2.Indoor Unit
Fig.
9-2.Checking Continuity of Fuse on PCB Assy
Fig.
10-1.Characteristics of New Refrigerant R410A
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
10-1-1.What is New Refrigerant R410A?
10-1-3.Characteristics
Tubing precautions
10-2.Checklist before Servicing
Size of flare
No addition of compressor oil for R410A
10-3.Tools Specifically for R410A
10-4.Tubing Installation Procedures
10-5.In Case of Compressor Malfunction
10-5-1.Procedure for Replacing Compressor
Page
10-6.In Case Refrigerant is Leaking
10-7.Charging Additional Refrigerant
10-7-1.When Tubes are Extended
10-8. Retro-FittingExisting Systems
10-8-1.Use of Existing Units
CS-KE30NKU+ CU-KE30NKU CS-KE36NKU+ CU-KE36NKU
APPENDIX A Operating Instructions
Split System Air Conditioner
Operating Instructions
CS-KE30NKU
CS-KE36NKU
CONTENTS
FEATURES
SAFETY PRECAUTIONS
PRODUCT INFORMATION
SAFETY INSTRUCTIONS
INSTALLATION LOCATION
ELECTRICAL REQUIREMENTS
UNIT DISPLAY AND OPERATION BUTTON
NAMES OF PARTS
Symbols
REMOTE CONTROLLER DISPLAY
ON TIME/OFF TIME setting buttons Advance button
REMOTE CONTROLLER
CANCEL button SENSOR button
ADDRESS switch
Temperature setting buttons TEMP
1 HR. TIMER button 1-HOUROFF TIMER
HIGH POWER button
Sensor
HOW TO INSTALL BATTERIES
USING THE REMOTE CONTROLLER
HOW TO USE THE REMOTE CONTROLLER
REMOTE CONTROLLER INSTALLATION POSITION
1. Automatic Operation
OPERATION WITH THE REMOTE CONTROLLER
2. Manual Operation
STEP STEP
4. Fan Only
3. Adjusting the Fan Speed
5. Night Setback Mode
6. QUIET Mode
8. UNOCCUPIED Mode
7. HIGH POWER Mode
Unoccupied Indication
Unoccupied
Remote Controller
Power failure during operation
SPECIAL REMARKS
‘‘DRY’’ Operation
1. How to set the present time
SETTING THE TIMER
2. How to set the OFF time
3. How to set the ON time
4. How to set daily ON/OFF repeat timer
USING THE 1-HOUROFF TIMER
1. 1-HourOFF Timer
TIPS FOR ENERGY SAVING
OPERATION WITHOUT THE REMOTE CONTROLLER
ADJUSTING THE AIRFLOW DIRECTION
1. Horizontal
2. Vertical
Cleaning the main unit and Remote Controller
How to replace the filter
Removing and remounting the front panel
Washing the front panel with water
TROUBLESHOOTING BEFORE CALLING FOR SERVICE
WIRED REMOTE CONTROLLER
OPERATING RANGE
Model No
SPECIFICATIONS
Outdoor Unit
Indoor Unit
Page
CS-KE30NKU+ CU-KE30NKU CS-KE36NKU+ CU-KE36NKU
APPENDIX B INSTALLATION INSTRUCTIONS
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Contents
When Transporting
SPECIAL PRECAUTIONS
When Installing…
In Case of Improper Installation
Others
When Servicing
fins of the outdoor unit. You may get injured
accidentally
1-1.Tools Required for Installation not supplied
1. General
1-2.Accessories Supplied with Unit Table
1-3.Optional Copper Tubing Kit
2. Installation Site Selection
Page
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Countermeasures against snow and wind
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Fig. 5e
Reference diagram for CU-KE30NKU, CU-KE36NKU
2-2-3.Dimensions of Wind-proofDuct
Unit: inch
Unit: inch
Required space around the outdoor unit
Reference diagram for CU-KE30NKU, CU-KE36NKU
2-2-4.Dimensions of Snow-proofDuct
Space requirements for setting
Reference diagram for snow-proofduct
CU-KE30NKU, CU-KE36NKUwith STK-BDV80E
Obstacle to the rear of unit
Obstacles to the front and rear of unit
Installation in front-rearrows
#04.2,;40:049:22:054
9:*2,9545:/90+,9
3. How to Install the Indoor Unit
Table
3-3.Install the Rear Panel on the Wall
a If Wooden Wall
b If Block, Brick, Concrete or Similar Type Wall
How to remove the grille
3-4.Removing and Installing the Grille
How to replace the grille
Fig. 17a
General precautions on wiring
3-6.Wiring Instructions
3-5.Shape the Indoor Side Tubing
Fig.
3-7.Wire Size and Length
Fig.
3-8.Wiring Instructions for Inter-unitConnections
Fig.
Fig.
How to connect wiring to the terminal
Right-sidetubing
3-9.Mounting
Fig. 37a
Fig. 37b
Left-sidetubing
Switching drain hose and drain cap
Drain hose
Drain cap
To unmount indoor unit
4-1.Wiring Instructions for the Outdoor Unit
4. How to Install the Outdoor Unit
4-2.Routing the Tubing and Wiring
Fig.46a
5-2.Flaring Procedure with a Flare Tool
5. Refrigerant Tubing
5-3.Caution before Connecting Tubes Tightly
5-1.Use of the Flaring Method
Table
6. Air Purging
the hex wrench before
Be sure to completely insert
attempting to turn the valve
Fig.
Fig. 59a Fig. 59b
How to Test Run the Air Conditioner
Fig. 59c
Pump Down
Basic Functions of the Service Valves
7. Remote Controller Installation Position
Service Valve Connections
8-1.Address Setting of the Remote Controller
8. Address Switch
Fig.
Fig.
DC1111-0
