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 ....................................................................................................................... 13
5. Wiring Diagram .......................................................................................................................................... 15
5.1 Indoor Units ................................................................................................................................. 15
5.2 Outdoor Units .............................................................................................................................. 20
6. Installation details ...................................................................................................................................... 31
6.1 Wrench torque sheet for installation ........................................................................................... 31
6.2 Connecting the cables ................................................................................................................ 31
6.3 Pipe length and the elevation ..................................................................................................... 32
6.4 Installation for the first time ......................................................................................................... 33
6.5 Adding the refrigerant after running the system for many years ................................................ 36
6.6 Re-installation while the indoor unit need to be repaired ........................................................... 37
6.7 Re-installation while the outdoor unit need to be repaired ......................................................... 39
7. Operation characteristics ......................................................................................................................... 41
8. Electronic function .................................................................................................................................... 42
8.1 Abbreviation ................................................................................................................................ 42
8.2 Display function ........................................................................................................................... 42
8.3 Main Protection ........................................................................................................................... 43
8.4 Operation Modes and Functions ................................................................................................. 44
9. Troubleshooting ......................................................................................................................................... 56
9.1 Indoor unit error display .............................................................................................................. 56
9.2 Diagnosis and Solution ............................................................................................................... 58
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