CONTENTS
1. Precaution................................................................................................................................................. 1
1.1 Safety Precaution ................................................................................................................................................ 1
1.2 Warning ............................................................................................................................................................... 1
2. Function.................................................................................................................................................... 4
3. Dimension................................................................................................................................................. 6
3.1 Indoor Unit........................................................................................................................................................... 6
3.2 Outdoor Unit ........................................................................................................................................................ 7
4. Specification............................................................................................................................................. 9
5. Refrigerant cycle diagram....................................................................................................................... 9
6. Wiring diagram....................................................................................................................................... 10
6.1 Indoor Unit......................................................................................................................................................... 10
6.2 Outdoor Unit ...................................................................................................................................................... 10
7. Installation details...................................................................................................................................11
7.1 Wrench torque sheet for installation .................................................................................................................. 12
7.2 Connecting the cables ....................................................................................................................................... 12
7.3 Pipe length and the elevation ............................................................................................................................ 12
7.4 Air purging of the piping and indoor unit ............................................................................................................ 12
7.5 Pumping down (Re-installation)......................................................................................................................... 14
7.6 Re-air purging (Re-installation).......................................................................................................................... 15
7.7 Balance refrigerant of the 2-way, 3-way valves ................................................................................................. 16
7.8 Evacuation......................................................................................................................................................... 20
7.9 Gas charging ..................................................................................................................................................... 21
8. Operation characteristics...................................................................................................................... 19
8.1 MS9A-09HRDN1-QC2....................................................................................................................................... 19
8.2 MS9A-12HRDN1-QC2....................................................................................................................................... 20
9. Electronic function ................................................................................................................................ 21
9.1 Abbreviation ...................................................................................................................................................... 21
9.2 Display function ................................................................................................................................................. 21
9.3 Protection .......................................................................................................................................................... 22
9.4 Fan-Only Mode.................................................................................................................................................. 22
9.5 Cooling Mode .................................................................................................................................................... 23
9.6 Drying mode ...................................................................................................................................................... 24
9.7 Heating mode .................................................................................................................................................... 24
9.8 Auto mode function............................................................................................................................................ 27
9.9 Forced operation function.................................................................................................................................. 28
9.10 Action of 4-way valve....................................................................................................................................... 28
9.11 Two speeds outdoor fan function ..................................................................................................................... 28
9.12 Timer function.................................................................................................................................................. 29
9.13 Sleep function mode........................................................................................................................................ 29
9.14 Auto-Restart function....................................................................................................................................... 29
9.15 Ionizer/Plasma dust collector function(optional) .............................................................................................. 29
9.16 Outdoor chassis heating cable (optional) ........................................................................................................ 29
10. Troubleshooting................................................................................................................................... 30
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