Service Manual

Table Of Contents
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 ......................................................................................................................................... 12
6 Installation Details ..................................................................................................................................... 12
6.1 Wrench torque sheet for installation ........................................................................................ 12
6.2 Connecting the cables ............................................................................................................ 12
6.3 Pipe length and the elevation .................................................................................................. 12
6.4 Installation for the first time ..................................................................................................... 12
6.5 Adding the refrigerant after running the system for many years ............................................... 14
6.6 Re-installation while the indoor unit need to be repaired ......................................................... 14
6.7 Re-installation while the outdoor unit need to be repaired ....................................................... 15
7. Operation Characteristics........................................................................................................................ 17
8. Electronic Function .................................................................................................................................. 18
8.1 Abbreviation ...........................................................................................................................18
8.2 Display function ......................................................................................................................18
8.3 Main Protection ......................................................................................................................19
8.4 Operation Modes and Functions .............................................................................................19
9. Troubleshooting ....................................................................................................................................... 26
9.1 Indoor Unit Error Display ........................................................................................................ 27
9.2 Outdoor unit error display ....................................................................................................... 28
9.3 Diagnosis and Solution ........................................................................................................... 28