Midea MS9V-18HRDN1-QC2(B) 9V SERIES - Table of Contents

CONTENTS
1. Precaution .................................................................................................................................................... 1
1.1 Safety Precaution .......................................................................................................................... 1
1.2 Warning ......................................................................................................................................... 1
2. Function ........................................................................................................................................................ 6
3. Dimension .................................................................................................................................................... 8
3.1 Indoor Unit ..................................................................................................................................... 8
3.2 Outdoor Unit ................................................................................................................................ 10
4. Refrigerant Cycle Diagram ........................................................................................................................ 11
5. Wiring Diagram .......................................................................................................................................... 12
5.1 Indoor .......................................................................................................................................... 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 ..................................................................................................... 14
6.4 Air purging with vacuum pump .................................................................................................... 15
6.5 Pumping down (Re-installation) .................................................................................................. 16
6.6 Re-air purging (Re-installation) ................................................................................................... 18
6.7 Balance refrigerant of the 2-way, 3-way valves .......................................................................... 19
6.8 Evacuation .................................................................................................................................. 20
6.9 Gas charging ............................................................................................................................... 21
7. Operation characteristics ......................................................................................................................... 22
8. Electronic function .................................................................................................................................... 23
8.1 Abbreviation ................................................................................................................................ 23
8.2 Display function ........................................................................................................................... 23
8.3 Main Protection ........................................................................................................................... 24
8.4 Operation Modes and Functions ................................................................................................. 25
9. Troubleshooting ......................................................................................................................................... 37
9.1 Indoor Unit Error Display ............................................................................................................. 38
9.2 Diagnosis and Solution ............................................................................................................... 39