CONTENTS 
 
1. Precaution ..................................................................................................................................................... 1 
1.1 Safety Precaution .......................................................................................................................... 1 
1.2 Warning ......................................................................................................................................... 1 
2. Part Names And Functions .......................................................................................................................... 4 
2.1 Model Names of Indoor/Outdoor units .......................................................................................... 4 
2.2 Part names of Indoor/Outdoor units .............................................................................................. 5 
3. Dimension ..................................................................................................................................................... 6 
3.1 Indoor Unit ..................................................................................................................................... 6 
3.2 Outdoor Unit .................................................................................................................................. 9 
4. Refrigerant Cycle Diagram ........................................................................................................................ 10 
5. Wiring Diagram ........................................................................................................................................... 11 
6 Installation Details ....................................................................................................................................... 11 
6.1 Wrench torque sheet for installation ........................................................................................... 11 
6.2 Connecting the cables ................................................................................................................. 11 
6.3 Pipe length and the elevation ...................................................................................................... 11 
6.4 Installation for the first time ......................................................................................................... 12 
6.5 Adding the refrigerant after running the system for many years ................................................. 12 
6.6 Re-installation while the indoor unit need to be repaired ............................................................ 13 
6.7 Re-installation while the outdoor unit need to be repaired ......................................................... 13 
7. Operation Characteristics ......................................................................................................................... 15 
8. Electronic Function .................................................................................................................................... 16 
8.1 Abbreviation ................................................................................................................................. 16 
8.2 Display function ........................................................................................................................... 16 
8.3 Main Protection ........................................................................................................................... 17 
8.4 Operation Modes and Functions ................................................................................................. 18 
9. Troubleshooting ......................................................................................................................................... 23 
9.1 Indoor Unit Error Display ............................................................................................................. 24 
9.2 Outdoor unit error display ............................................................................................................ 25 
9.3 Diagnosis and Solution ............................................................................................................... 29 
10 Disassembly Instructions ......................................................................................................................... 58 
10.1 Indoor unit ................................................................................................................................. 58 
10.2 Outdoor unit ............................................................................................................................... 62