CONTENTS
1. Precaution ..................................................................................................................................................... 1
1.1 Safety Precaution .......................................................................................................................... 1
1.2 Warning ......................................................................................................................................... 1
2. Function ........................................................................................................................................................ 6
3. Dimension ..................................................................................................................................................... 9
3.1 Indoor Units ................................................................................................................................... 9
3.2 Outdoor Units .............................................................................................................................. 12
4. Refrigerant Cycle Diagram ........................................................................................................................ 13
5. Wiring Diagram ........................................................................................................................................... 15
5.1 Indoor Units ................................................................................................................................. 15
5.2 Outdoor Units .............................................................................................................................. 20
6. Installation details ...................................................................................................................................... 26
6.1 Wrench torque sheet for installation............................................................................................ 26
6.2 Connecting the cables ................................................................................................................. 27
6.3 Pipe length and the elevation ...................................................................................................... 28
6.4 Installation for the first time ......................................................................................................... 29
6.5 Adding the refrigerant after running the system for many years ................................................. 32
6.6 Re-installation while the indoor unit need to be repaired ............................................................ 33
6.7 Re-installation while the outdoor unit need to be repaired ......................................................... 35
7. Operation characteristics .......................................................................................................................... 38
8. Electronic function..................................................................................................................................... 39
8.1 Abbreviation ................................................................................................................................. 39
8.2 Display function ........................................................................................................................... 39
8.3 Main Protection ........................................................................................................................... 40
8.4 Operation Modes and Functions ................................................................................................. 41
9. Troubleshooting ......................................................................................................................................... 55
9.1 Indoor Unit Error Display ............................................................................................................. 55
9.2 Diagnosis and Solution................................................................................................................ 56
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