Table Of Contents - Toyotomi MTN-MTG A128FS Service Manual

Table of Contents

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

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

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

2. Function ........................................................................................................................................................ 6

3. Dimension .................................................................................................................................................... 9

3.1 Indoor Units ................................................................................................................................. 9

3.2 Outdoor Units ............................................................................................................................ 11

4. Refrigerant Cycle Diagram ....................................................................................................................... 12

5. Wiring Diagram .......................................................................................................................................... 13

5.1 Indoor Units ............................................................................................................................... 13

5.2 Outdoor Units ............................................................................................................................ 17

6. Installation details ...................................................................................................................................... 25

6.1 Wrench torque sheet for installation .......................................................................................... 25

6.2 Connecting the cables ............................................................................................................... 25

6.3 Pipe length and the elevation .................................................................................................... 26

6.4 Installation for the first time........................................................................................................ 27

6.5 Adding the refrigerant after running the system for many years ................................................ 30

6.6 Re-installation while the indoor unit need to be repaired ........................................................... 31

6.7 Re-installation while the outdoor unit need to be repaired ......................................................... 33

7. Operation characteristics ......................................................................................................................... 35

8. Electronic function .................................................................................................................................... 36

8.1 Abbreviation .............................................................................................................................. 36

8.2 Display function ......................................................................................................................... 36

8.3 Main Protection ......................................................................................................................... 37

8.4 Operation Modes and Functions ............................................................................................... 37

9. Troubleshooting ......................................................................................................................................... 49

9.1 Indoor unit error display ............................................................................................................. 49

9.2 Diagnosis and Solution .............................................................................................................. 50

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