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TABLE OF CONTENTS
1. Safety Precautions.............................................3
2. Specification .......................................................5
3. Features.............................................................29
4. Location of Controls and Components..........30
4.1 Indoor Unit..................................................30
4.2 Outdoor Unit ...............................................30
4.3 Remote Control ..........................................30
5. Dimensions .......................................................31
5.1 Indoor Unit..................................................31
5.2 Outdoor Unit ...............................................33
6. Refrigeration Cycle Diagram...........................35
6.1 CU-E7NKR .................................................35
6.2 CU-E9NKR CU-E12NKR...........................36
6.3 CU-E15NKR CU-E18NKR.........................37
6.4 CU-E21NKR ...............................................38
6.5 CU-E24NKR CU-E28NKR.........................39
7. Block Diagram ..................................................40
7.1 CU-E7NKR CU-E9NKR CU-E12NKR......40
7.2 CU-E15NKR CU-E18NKR
CU-E21NKR ...............................................41
7.3 CU-E24NKR ...............................................42
7.4 CU-E28NKR ...............................................43
8. Wiring Connection Diagram............................44
8.1 Indoor Unit..................................................44
8.2 Outdoor Unit ...............................................45
9. Electronic Circuit Diagram ..............................50
9.1 Indoor Unit..................................................50
9.2 Outdoor Unit ...............................................51
10. Printed Circuit Board .......................................56
10.1 Indoor Unit..................................................56
10.2 Outdoor Unit ...............................................59
11. Installation Instruction.....................................64
11.1 Select the Best Location.............................64
11.2 Indoor Unit..................................................65
11.3 Outdoor Unit ...............................................69
12. Installation Instruction.....................................72
12.1 Select the Best Location.............................72
12.2 Indoor Unit..................................................73
12.3 Outdoor Unit ...............................................77
13. Operation Control.............................................80
13.1 Basic Function............................................80
13.2 Indoor Fan Motor Operation.......................81
13.3 Outdoor Fan Motor Operation ....................82
13.4 Airflow Direction..........................................83
13.5 Quiet operation (Cooling Mode/Cooling area
of Dry Mode)...............................................84
13.6 Quiet operation (Heating)...........................84
13.7 Powerful Mode Operation...........................85
13.8 Timer Control..............................................85
13.9 Auto Restart Control...................................85
13.10 Indication Panel......................................... 86
13.11 nanoe-G Operation.................................... 86
13.12 Mild Dry Cooling Operation ....................... 88
13.13 AUTO COMFORT and ECO NAVI
Operation................................................... 88
14. Protection Control........................................... 97
14.1 Protection Control For All Operations........ 97
14.2 Protection Control For Cooling & Soft Dry
Operation................................................... 99
14.3 Protection Control For Heating
Operation................................................. 100
15. Servicing Mode.............................................. 102
15.1 Auto OFF/ON Button............................... 102
15.2 Remote Control Button............................ 103
16. Troubleshooting Guide................................. 105
16.1 Refrigeration cycle system ...................... 105
16.2 Breakdown Self Diagnosis Function........ 107
16.3 Error Code Table..................................... 108
16.4 Self-diagnosis Method............................. 110
17. Disassembly and Assembly Instructions ... 139
17.1 CS-E7NK CS-E9NK CS-E12NK
CS-E15NK............................................... 139
17.2 CS-E18NK CS-E21NK CS-E24NK
CS-E28NK............................................... 143
17.3 Outdoor Electronic Controller Removal
Procedure................................................ 147
18. Technical Data ............................................... 150
18.1 Operation Characteristics........................ 150
18.2 Sensible Capacity Chart.......................... 182
19. Exploded View and Replacement Parts
List .................................................................. 186
19.1 Indoor Unit............................................... 186
19.2 Outdoor Unit ............................................ 190
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