Outdoor Unit
CS-KE30NKU+ CU-KE30NKU CS-KE36NKU+ CU-KE36NKU
Indoor Unit
TECHNICAL & SERVICE MANUAL
SAFETY PRECAUTIONS
which may cause a unit breakdown
REFRIGERANT FLOW DIAGRAM
Table of Contents
SPECIFICATIONS
8. TROUBLESHOOTING BEFORE CALLING FOR SERVICE
9. CHECKING ELECTRICAL COMPONENTS
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
INSTALLAION INSTRUCTIONS
10. REFRIGERANT R410A
Indoor Air Intake Temp
1. OPERATING RANGE
Temperature
Outdoor Air Intake Temp
Features
2. SPECIFICATIONS
2-1.Unit Specifications
Weight
Outdoor Unit
Indoor Unit
CS-KE30NKU
CU-KE30NKU
Voltage Rating
CS-KE36NKU
CU-KE36NKU
Performance
Voltage Rating
CS-KE36NKU
CU-KE36NKU
Performance
Control PCB
2-2.Major Component Specifications
2-2-1.Indoor Unit
Fan Motor
Fan Motor
Indoor Unit CS-KE36NKU
Control PCB
Flap Motor
Compressor
2-2-2.Outdoor Unit
P.C.Board
Fan Motor
Fan Motor
P.C.Board
Compressor
Heat Exchanger Coil
2-3.Other Component Specifications
3. DIMENSIONAL DATA
CS-KE36NKU
194-00-1
CU-KE36NKU
inchmm
Unit
4. REFRIGERANT FLOW DIAGRAM
4-1.Refrigerant Flow Diagram
5-1.Temperature Charts
5. PERFORMANCE DATA
3 Indoor discharge air performance chart
1 High pressure performance chart
2 Operating current performance chart
Indoor Unit CS-KE30NKU Outdoor Unit CU-KE30NKU
3 Indoor discharge air performance chart
1 Low pressure performance chart
2 Operating current 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
1 Voltage:230V
CS-KE36NKU
CU-KE36NKU
Cooling
6-2.Electric Wiring Diagrams
CONTROLLER
8FA2-5251-15200-0
Outdoor Unit CU-KE30NKU
CU-KE36NKU
Emergency operation
7. FUNCTIONS
7-1.Operation Functions
AUTO cooling/heating operation
NIGHT SETBACK
HIGH POWER
Timer backup
Lamp colors
<Operation Sound>
Noise Reducing Control Outdoor Unit
<Switching Procedure to Noise Reducing Control>
Fig.3 Control P.C.Board Fig.2 View from front
Description of function
Maximum Current Value Change Function
<Maximum Current Value Change Procedure>
Fig.4 Control P.C.Board
Overload prevention during heating
Compressor discharge temperature control
7-2.Protective Functions
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
INDOOR UNIT
2 TIMER lamp
DIAGNOSIS CONTENTS
1 OPERATION lamp
Check the indoor unit Is the fuse blown?
2If the self-diagnosticsfunction fails to operate
Check the power voltage 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
Diagnostic results
8-4-2.Outdoor Fan Motor
Diagnostic procedure
Remedy for symptom 3 to
Correction
Locations most susceptible to noise
Trouble
Locations most susceptible to noise
9-1.Measurement of Insulation Resistance
9-1-1.Power Supply Cord
9. CHECKING ELECTRICAL COMPONENTS
9-1-2.Indoor Unit
Fig.
9-2.Checking Continuity of Fuse on PCB Assy
Fig.
10-1-1.What is New Refrigerant R410A?
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
10-1.Characteristics of New Refrigerant R410A
10-1-3.Characteristics
Size of flare
10-2.Checklist before Servicing
Tubing precautions
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
10-8. Retro-FittingExisting Systems
10-7-1.When Tubes are Extended
10-7.Charging Additional Refrigerant
10-8-1.Use of Existing Units
APPENDIX A Operating Instructions
CS-KE30NKU+ CU-KE30NKU CS-KE36NKU+ CU-KE36NKU
CS-KE30NKU
Operating Instructions
Split System Air Conditioner
CS-KE36NKU
SAFETY PRECAUTIONS
FEATURES
CONTENTS
PRODUCT INFORMATION
ELECTRICAL REQUIREMENTS
INSTALLATION LOCATION
SAFETY INSTRUCTIONS
NAMES OF PARTS
UNIT DISPLAY AND OPERATION BUTTON
REMOTE CONTROLLER DISPLAY
Symbols
CANCEL button SENSOR button
REMOTE CONTROLLER
ON TIME/OFF TIME setting buttons Advance button
ADDRESS switch
HIGH POWER button
1 HR. TIMER button 1-HOUROFF TIMER
Temperature setting buttons TEMP
Sensor
HOW TO USE THE REMOTE CONTROLLER
USING THE REMOTE CONTROLLER
HOW TO INSTALL BATTERIES
REMOTE CONTROLLER INSTALLATION POSITION
2. Manual Operation
OPERATION WITH THE REMOTE CONTROLLER
1. Automatic Operation
STEP STEP
5. Night Setback Mode
3. Adjusting the Fan Speed
4. Fan Only
6. QUIET Mode
Unoccupied Indication
7. HIGH POWER Mode
8. UNOCCUPIED Mode
Unoccupied
SPECIAL REMARKS
Power failure during operation
Remote Controller
‘‘DRY’’ Operation
2. How to set the OFF time
SETTING THE TIMER
1. How to set the present time
3. How to set the ON time
1. 1-HourOFF Timer
USING THE 1-HOUROFF TIMER
4. How to set daily ON/OFF repeat timer
TIPS FOR ENERGY SAVING
1. Horizontal
ADJUSTING THE AIRFLOW DIRECTION
OPERATION WITHOUT THE REMOTE CONTROLLER
2. Vertical
Removing and remounting the front panel
How to replace the filter
Cleaning the main unit and Remote Controller
Washing the front panel with water
OPERATING RANGE
WIRED REMOTE CONTROLLER
TROUBLESHOOTING BEFORE CALLING FOR SERVICE
Outdoor Unit
SPECIFICATIONS
Model No
Indoor Unit
Page
APPENDIX B INSTALLATION INSTRUCTIONS
CS-KE30NKU+ CU-KE30NKU CS-KE36NKU+ CU-KE36NKU
Contents
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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
Page
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Countermeasures against snow and wind
$/,8,3?,4508-25=
Fig. 5e
Unit: inch
2-2-3.Dimensions of Wind-proofDuct
Reference diagram for CU-KE30NKU, CU-KE36NKU
Unit: inch
Required space around the outdoor unit
2-2-4.Dimensions of Snow-proofDuct
Reference diagram for CU-KE30NKU, CU-KE36NKU
CU-KE30NKU, CU-KE36NKUwith STK-BDV80E
Reference diagram for snow-proofduct
Space requirements for setting
Obstacle to the rear of unit
#04.2,;40:049:22:054
Installation in front-rearrows
Obstacles to the front and rear of unit
9:*2,9545:/90+,9
3. How to Install the Indoor Unit
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.Removing and Installing the Grille
How to remove the grille
Fig. 17a
3-5.Shape the Indoor Side Tubing
3-6.Wiring Instructions
General precautions on wiring
Fig.
3-7.Wire Size and Length
Fig.
3-8.Wiring Instructions for Inter-unitConnections
Fig.
Fig.
How to connect wiring to the terminal
Fig. 37a
3-9.Mounting
Right-sidetubing
Fig. 37b
Drain hose
Switching drain hose and drain cap
Left-sidetubing
Drain cap
To unmount indoor unit
4-2.Routing the Tubing and Wiring
4. How to Install the Outdoor Unit
4-1.Wiring Instructions for the Outdoor Unit
Fig.46a
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
6. Air Purging
attempting to turn the valve
Be sure to completely insert
the hex wrench before
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
Fig.
8. Address Switch
8-1.Address Setting of the Remote Controller
Fig.
DC1111-0