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TABLE OF CONTENTS
PAGE PAGE
1. Safety Precautions ............................................. 4
2. Precaution for Using R32 Refrigerant .............. 6
3. Specifications ................................................... 10
4. Features ............................................................ 21
5. Location of Controls and Components .......... 22
5.1 Indoor Unit .................................................. 22
5.2 Outdoor Unit ............................................... 22
5.3 Remote Control .......................................... 22
6. Dimensions ....................................................... 23
6.1 Indoor Unit .................................................. 23
6.2 Outdoor Unit ............................................... 25
7. Refrigeration Cycle Diagram ........................... 27
7.1 CU-TZ9SKE CU-TZ12SKE
CU-TZ15SKE ............................................. 27
7.2 CU-TZ18SKE ............................................. 28
7.3 CU-TZ24SKE ............................................. 29
8. Block Diagram .................................................. 30
8.1 Outdoor ...................................................... 30
9. Wiring Connection Diagram ............................ 35
9.1 Indoor Unit .................................................. 35
9.2 Outdoor Unit ............................................... 37
10. Electronic Circuit Diagram .............................. 42
10.1 Indoor Unit .................................................. 42
10.2 Outdoor Unit ............................................... 44
11. Printed Circuit Board ....................................... 49
11.1 Indoor Unit .................................................. 49
11.2 Outdoor Unit ............................................... 51
12. Installation Instruction ..................................... 57
12.1 Select the Best Location ............................ 57
12.2 Indoor Unit .................................................. 58
12.3 Outdoor Unit ............................................... 63
13. Installation and Servicing Air Conditioner
using R32 .......................................................... 69
13.1 About R32 Refrigerant ............................... 69
13.2 Characteristics of R32 Refrigerant ............. 69
13.3 Refrigerant piping installation • Tools used
in services .................................................. 71
13.4 New installation, Relocation, Repairing of
Refrigerant Cycle System The
Procedures ................................................. 75
13.5 Piping installation of R32 ............................ 76
13.6 Installation, Relocation, and Service .......... 77
13.7 Repairing of refrigerant cycle / Brazing
point ............................................................ 81
13.8 <Reference> Analysis method for no error
code, no cooling / no warming ................... 87
14. Operation Control ............................................. 89
14.1 Basic Function ............................................ 89
14.2 Indoor Fan Motor Operation ....................... 90
14.3 Outdoor Fan Motor Operation .................... 91
14.4 Airflow Direction ......................................... 92
14.5 Timer Control .............................................. 93
14.6 Sleep Mode Operation ............................... 94
14.7 Auto Restart Control ................................... 94
14.8 Indication Panel .......................................... 94
14.9 Quiet Operation (Cooling Mode/Cooling
Area of Dry Mode) ...................................... 94
14.10 Quiet Operation (Heating) .......................... 95
14.11 Powerful Mode Operation .......................... 95
15. Operation Control (For Multi Split
Connection) ...................................................... 96
15.1 Cooling operation ....................................... 96
15.2 Soft Dry Operation ...................................... 96
15.3 Heating Operation ...................................... 96
15.4 Automatic Operation .................................. 97
15.5 Indoor Fan Motor Operation ....................... 97
15.6 Powerful Mode Operation .......................... 97
15.7 Auto Restart Control ................................... 97
15.8 Indication Panel .......................................... 97
16. Protection Control ............................................ 98
16.1 Protection Control for All Operations .......... 98
16.2 Protection Control for Cooling & Soft Dry
Operation .................................................. 100
16.3 Protection Control for Heating
Operation .................................................. 101
17. Servicing Mode ............................................... 102
17.1 Auto OFF/ON Button ................................ 102
17.2 Heat Only Operation ................................ 103
17.3 Remote Control Button ............................. 104
18. Troubleshooting Guide .................................. 105
18.1 Refrigeration Cycle System ...................... 105
18.2 Breakdown Self Diagnosis Function ........ 107
18.3 Error Codes Table .................................... 108
18.4 Self-diagnosis Method .............................. 110
19. Disassembly and Assembly Instructions .... 139
19.1 CS-TZ9SKEW CS-TZ12SKEW
CS-TZ15SKEW CS-TZ18SKEW ............. 139
19.2 CS-TZ24SKEW ........................................ 143
19.3 Outdoor Electronic Controller Removal
Procedure ................................................. 147
20. Technical Data ................................................ 150
1.1 Cool Mode Performance Data .................. 150
1.2 Heat Mode Performance Data ................. 152
21. Service Data .................................................... 153
21.1 Cool Mode Outdoor Air Temperature
Characteristic ........................................... 153
21.2 Heat Mode Outdoor Air Temperature
Characteristic ........................................... 158
21.3 Piping Length Correction Factor .............. 163
22. Exploded View and Replacement Parts
List ................................................................... 166
22.1 Indoor Unit ................................................ 166
22.2 Outdoor Unit ............................................. 171
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