Table Of Contents - Midea MSC-09HRDN1-QD0(E) Service Manual

Air conditioner dc inverter split wall-mounted type

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Service manual (44 pages)

Table of Contents

1. Precaution .................................................................................................................................................... 1

1.1 Safety Precaution ................................................................................................................................................ 1

1.2 Warning ............................................................................................................................................................... 1

2. Function ........................................................................................................................................................ 3

3. Dimension .................................................................................................................................................... 5

3.1 Indoor Unit ........................................................................................................................................................... 5

3.2 Outdoor Unit ........................................................................................................................................................ 6

4. Specification ................................................................................................................................................ 7

5. Refrigerant cycle diagram .......................................................................................................................... 9

6. Wiring diagram ........................................................................................................................................... 10

6.1 Indoor Unit ......................................................................................................................................................... 10

6.2 Outdoor Unit ...................................................................................................................................................... 11

7. Installation details ...................................................................................................................................... 12

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 ............................................................................................................ 13

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 ......................................................................................................................................................... 17

7.9 Gas charging ..................................................................................................................................................... 18

8. Operation characteristics ......................................................................................................................... 19

8.1 MSC-09HRDN1-QD0(E) .................................................................................................................................... 19

8.2 MSC-12HRDN1-QC6(E) .................................................................................................................................... 20

8.3 MSH-09HRDN1-QD0(E) .................................................................................................................................... 21

8.4 MSH-12HRDN1-QC6(E) .................................................................................................................................... 22

9. Electronic function .................................................................................................................................... 23

9.1 Abbreviation ...................................................................................................................................................... 23

9.2 Display function ................................................................................................................................................. 23

9.3 Protection .......................................................................................................................................................... 24

9.4 Fan-Only Mode .................................................................................................................................................. 24

9.5 Cooling Mode .................................................................................................................................................... 25

9.6 Drying mode ...................................................................................................................................................... 27

9.7 Heating mode .................................................................................................................................................... 27

9.8 Auto mode function ............................................................................................................................................ 31

9.9 Forced operation function .................................................................................................................................. 31

9.10 Action of 4-way valve ....................................................................................................................................... 32

9.11 Two speeds outdoor fan function ..................................................................................................................... 32

9.12 Timer function .................................................................................................................................................. 32

9.13 Sleep function mode ........................................................................................................................................ 32

9.14 Electronic control parameter ............................................................................................................................ 33

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