Midea Advantage Series

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CONTENTS

1. Indoor Unit Combination .......................................................................................................................................... 4

2. Dimension Of Outdoor Unit...................................................................................................................................... 6

3. Refrigerant Cycle Diagram ........................................................................................................................................ 8

4. Installation Details .................................................................................................................................................. 11

4.1 Wrench torque sheet for installation ............................................................................................................... 11

4.2 Connecting the cables ...................................................................................................................................... 11

4.3 Pipe length and the elevation ........................................................................................................................... 11

4.4 First-Time Installation ....................................................................................................................................... 11

4.5 Adding Refrigerant after Long-Term System Operation................................................................................... 13

4.6 Procedure when servicing the indoor unit refrigeration circuit. ...................................................................... 13

4.7 Evacuation after servicing the outdoor unit refrigeration circuit .................................................................... 14

5. Electronic Function ................................................................................................................................................. 16

5.1 Abbreviation ..................................................................................................................................................... 16

5.2 Electric Control Working Environment. ............................................................................................................ 16

5.3 Main Protection ................................................................................................................................................ 16

5.4 Control and Functions ...................................................................................................................................... 18

6. Wiring Diagrams ..................................................................................................................................................... 23

7. Troubleshooting ..................................................................................................................................................... 30

7.1Safety ................................................................................................................................................................. 30

7.2 Indoor Unit Error Display................................................................................................................................... 31

7.3 Outdoor Unit Display ........................................................................................................................................ 34

7.4 Diagnosis and Solution ..................................................................................................................................... 39

7.5 Trouble Criterion of Main Parts. ....................................................................................................................... 89

8. Disassembly Instructions ...................................................................................................................................... 100

 M2OF-18HFN1-M (WCA30 metal plate) ................................................................................................. 100

 M3OF-27HFN1-M (WD30 metal plate) .................................................................................................... 107