Table Of Contents - North American HVAC MSC-28CRDN1-MN15W Service Manual

1. Precaution .................................................................................................................................................... 1
1.1 Safety Precaution .......................................................................................................................... 1
1.2 Warning ......................................................................................................................................... 1
2. Function ........................................................................................................................................................ 6
3. Dimension .................................................................................................................................................... 7
3.1 Indoor Unit ..................................................................................................................................... 7
3.2 Outdoor Unit .................................................................................................................................. 9
4. Refrigerant Cycle Diagram ....................................................................................................................... 10
5. Wiring Diagram .......................................................................................................................................... 12
5.1 Indoor Unit ................................................................................................................................... 12
5.2 Outdoor Unit ................................................................................................................................ 13
6 Installation details ...................................................................................................................................... 14
6.1 Wrench torque sheet for installation ........................................................................................... 14
6.2 Connecting the cables ................................................................................................................ 14
6.3 Pipe length and the elevation ..................................................................................................... 15
6.4 Installation for the first time ......................................................................................................... 16
6.5 Adding the refrigerant after running the system for many years ................................................ 19
6.6 Re-installation while the indoor unit need to be repaired ........................................................... 20
6.7 Re-installation while the outdoor unit need to be repaired ......................................................... 22
7. Operation characteristics ......................................................................................................................... 25
8. Electronic function .................................................................................................................................... 26
8.1 Abbreviation ................................................................................................................................ 26
8.2 Display function ........................................................................................................................... 26
8.3 Main Protection ........................................................................................................................... 27
8.4 Operation Modes and Functions ................................................................................................. 28
9. Troubleshooting ......................................................................................................................................... 40
9.1 Indoor Unit Error Display ............................................................................................................. 40
9.2 Diagnosis and Solution ............................................................................................................... 41
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