Table of Contents
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1. Indoor unit that can be connectted to Outdoor unit (SMMS-u) ........................... 3
2. Main Parts List ......................................................................................................... 4
2-1. Outdoor Unit (MMY-MUP***1HT8) ...................................................................................... 4
2-2. Inverter Assembly ................................................................................................................ 6
3. Wiring Diagrams ...................................................................................................... 7
3-1. Parts Layout in Outdoor Unit ............................................................................................. 8
3-2. Parts Layout in Inverter Assembly................................................................................... 11
3-3. Outdoor (Inverter) Print Circuit Board ............................................................................. 14
4. REFRIGERANT PIPING SCHEMATIC DRAWING ................................................. 18
5. Method to set Outdoor Unit Function Code No. (O.DN ) .................................... 20
6. Troubleshooting in Test Operation ....................................................................... 23
6-1. Troubleshooting method ................................................................................................... 26
6-2. Troubleshooting based Information ................................................................................ 28
(7-Segment Display on I/F Board) and Locations to Be Checked ................................ 35
7. Applied Control of Indoor Unit ............................................................................. 49
8. Applied Control for Outdoor Unit ......................................................................... 53
8-1. Outdoor Fan High Static Pressure Shift .......................................................................... 53
8-2. Priority Operation Mode Setting ...................................................................................... 54
8-3. Applied Control of Outdoor Unit ...................................................................................... 56
8-4. Notice Code ........................................................................................................................ 57
8-5. System Cooperation Defrosting ....................................................................................... 59
9. APPLIED CONTROL AND FUNCTIONS ............................................................... 62
9-1. Optional Connector Specifications of Indoor P.C. Board .............................................. 62
9-2. Test Operation of Indoor Unit ........................................................................................... 64
9-3. Service Support Function ................................................................................................. 70
10. 7-Segment Display Function .............................................................................. 92
10-1. Display of System Information (Displayed on Header Outdoor Unit Only) ................ 92
10-2. Display of Outdoor Unit Information (Displayed on Each Outdoor Unit) ................... 93
10-3. Display of Outdoor Cycle Data (Displayed at Each Outdoor Unit) .............................. 94
10-4. Display of Outdoor Cycle Data (Displayed at Header Unit) .......................................... 95
10-5. Display of Indoor Unit Information (Displayed on Header Unit Only) ......................... 96
(Displayed on Header Unit Only) ..................................................................................... 96
11. Oil Level Judgment Display ............................................................................... 97
13. Sensor Characteristics ....................................................................................... 99
14. Pressure Sensor Output Check ....................................................................... 102
15. Check the additional amount of refrigerant. ................................................... 103
16. Wave Tool Advance for SMMS-u Series .......................................................... 106
16-1. Before the Use of Wave Tool Advance .......................................................................... 106
16-2. About Wave Tool Advance .............................................................................................. 106
16-3. Valid/Prohibition/Permission setting for Test operation from WTA App. .................. 106
16-4. Confirmation for NFC tag Communication .................................................................. 107
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Table of Contents
Troubleshooting
