Table Of Contents - Midea MSX-18HRDN1-QC2 Service Manual

Airconditioner dc inverter split wall-mounted type

Table of 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 ........................................................................................................................................................ 6

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

5. Refrigerant cycle diagram....................................................................................................................... 8

6. Wiring diagram ......................................................................................................................................... 9

6.1 Indoor Unit........................................................................................................................................................... 9

6.2 Outdoor Unit ...................................................................................................................................................... 10

7. Installation details ...................................................................................................................................11

7.1 Wrench torque sheet for installation .................................................................................................................. 11

7.2 Connecting the cables ....................................................................................................................................... 11

7.3 Pipe length and the elevation ............................................................................................................................ 11

7.4 Air purging of the piping and indoor unit ............................................................................................................ 11

7.5 Pumping down (Re-installation)......................................................................................................................... 13

7.6 Re-air purging (Re-installation).......................................................................................................................... 14

7.7 Balance refrigerant of the 2-way, 3-way valves ................................................................................................. 15

7.8 Evacuation......................................................................................................................................................... 16

7.9 Gas charging ..................................................................................................................................................... 17

8. Operation characteristics...................................................................................................................... 18

9. Electronic function................................................................................................................................. 19

9.1 Abbreviation....................................................................................................................................................... 19

9.2 Display function ................................................................................................................................................. 19

9.3 Protection .......................................................................................................................................................... 20

9.4 Fan-Only Mode.................................................................................................................................................. 21

9.5 Cooling Mode .................................................................................................................................................... 21

9.6 Drying mode ...................................................................................................................................................... 22

9.7 Heating mode .................................................................................................................................................... 23

9.8 Auto mode function............................................................................................................................................ 25

9.9 Forced operation function.................................................................................................................................. 26

9.10 Action of 4-way valve....................................................................................................................................... 26

9.11 Two speeds outdoor fan function ..................................................................................................................... 26

9.12 Timer function.................................................................................................................................................. 26

9.13 Sleep function mode........................................................................................................................................ 27

9.14 Auto-Restart function....................................................................................................................................... 27

9.15 Ionizer(Clean Air) function............................................................................................................27

9.16 Self clean function......................................................................................................................27

9.17 Follow me function.....................................................................................................................27

9.18 Outdoor chassis heating cable(optional).........................................................................................28

CONTENTS