CONTENTS
1. Precaution .................................................................................................................................................... 1
1.1 Safety Precaution ........................................................................................................................ 1
1.2 Warning ....................................................................................................................................... 1
2. Function ........................................................................................................................................................ 6
3. Dimension .................................................................................................................................................... 9
3.1 Indoor Unit ................................................................................................................................... 9
3.2 Outdoor Unit .............................................................................................................................. 10
4. Refrigerant Cycle Diagram ........................................................................................................................ 11
5. Wiring Diagram .......................................................................................................................................... 12
5.1 Indoor Unit ................................................................................................................................. 12
5.2 Outdoor Unit .............................................................................................................................. 15
6. Installation details ...................................................................................................................................... 21
6.1 Wrench torque sheet for installation .......................................................................................... 21
6.2 Connecting the cables ............................................................................................................... 21
6.3 Pipe length and the elevation .................................................................................................... 22
6.4 Air purging with vacuum pump .................................................................................................. 23
6.5 Pumping down (Re-installation) ................................................................................................. 24
6.6 Re-air purging (Re-installation) .................................................................................................. 25
6.7 Balance refrigerant of the 2-way, 3-way valves ......................................................................... 26
6.8 Evacuation ................................................................................................................................ 27
6.9 Gas charging ............................................................................................................................. 28
7. Operation characteristics ......................................................................................................................... 29
8. Electronic function .................................................................................................................................... 30
8.1 Abbreviation .............................................................................................................................. 30
8.2 Display function ......................................................................................................................... 30
8.3 Main Protection ......................................................................................................................... 31
8.4 Operation Modes and Functions ............................................................................................... 32
9. Troubleshooting ......................................................................................................................................... 47
9.1 Indoor Unit Error Display ........................................................................................................... 47
9.2 Diagnosis and Solution .............................................................................................................. 48
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