CONTENTS
1. Precaution .................................................................................................................................................... 1
1.1 Safety Precaution .......................................................................................................................... 1
1.2 Warning ......................................................................................................................................... 1
2. Function ........................................................................................................................................................ 6
3. Dimension .................................................................................................................................................... 8
3.1 Indoor Units ................................................................................................................................... 8
3.2 Outdoor Units ............................................................................................................................... 11
4. Refrigerant Cycle Diagram ....................................................................................................................... 12
5. Wiring Diagram .......................................................................................................................................... 14
5.1 Indoor Units ................................................................................................................................. 14
5.2 Outdoor Units .............................................................................................................................. 19
6. Installation details ..................................................................................................................................... 25
6.1 Wrench torque sheet for installation ........................................................................................... 25
6.2 Connecting the cables ................................................................................................................ 26
6.3 Pipe length and the elevation ..................................................................................................... 27
6.4 Installation for the first time ......................................................................................................... 28
6.5 Adding the refrigerant after running the system for many years ................................................ 31
6.6 Re-installation while the indoor unit need to be repaired ........................................................... 32
6.7 Re-installation while the outdoor unit need to be repaired ......................................................... 34
7. Operation characteristics ......................................................................................................................... 37
8. Electronic function .................................................................................................................................... 38
8.1 Abbreviation ................................................................................................................................ 38
8.2 Display function ........................................................................................................................... 38
8.3 Main Protection ........................................................................................................................... 39
8.4 Operation Modes and Functions ................................................................................................. 40
9. Troubleshooting ......................................................................................................................................... 54
9.1 Indoor Unit Error Display ............................................................................................................. 55
9.2 Outdoor unit error display ........................................................................................................... 57
9.3 Diagnosis and Solution ............................................................................................................... 59
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