
DC-InverterAir Conditioner Technical & Service Manual
Table of Contents
1. General . .................................................................................................................................................1
1.1 Features. .......................................................................................................................................1
1.2 Product lineup. ..............................................................................................................................5
1.3 Nomenclature . ..............................................................................................................................5
1.4 Unit installation . ............................................................................................................................6
1.5 Working range. ..............................................................................................................................6
1.6 Product appearance . ....................................................................................................................7
2. Specifications. ......................................................................................................................................14
2.1 Duct type. ....................................................................................................................................14
2.2 Cassette type. .............................................................................................................................18
2.3 Ceiling & Floor type ....................................................................................................................22
2.4 Console type. ..............................................................................................................................26
3. Outlines and dimensions. .....................................................................................................................28
3.1 Indoor units . ................................................................................................................................28
3.2 Outdoor units . .............................................................................................................................35
4. Electrical data . ....................................................................................................................................41
5. Capacities and selection data..............................................................................................................42
5.1 Capacity characteristic charts.....................................................................................................36
5.2 Piping length correction factor ....................................................................................................61
5.3 Correction factors according to defrosting operation..................................................................63
6. Sound pressure data . ..........................................................................................................................64
7. Air flow distribution. ..............................................................................................................................75
7.1 Cassette type. .............................................................................................................................75
7.2 Ceiling & Floor type ....................................................................................................................84
8. ESP (External static pressure) chart (Duct type).................................................................................98
9. Refrigerant cycle ................................................................................................................................107
10. Fresh air intake function. ..................................................................................................................113
11. Wiring diagram. ................................................................................................................................115
11.1 Electrical wiring diagrams .......................................................................................................115
11.2 Control board picture . .............................................................................................................125
11.3 Common wiring. ......................................................................................................................130
12. Field setting. ....................................................................................................................................132
12.1 Indoor unit air flow DIP switch ................................................................................................132
12.2 Outdoor unit DIP switch ..........................................................................................................133
12.3 ESP setting . ............................................................................................................................134
12.4 Indoor unit parameter revision ................................................................................................135
12.5 Running parameter query.......................................................................................................137
12.6 Instructions for the function setting of access control, fire protection .....................................140
13. Piping work and refrigerant charge ..................................................................................................142
13.1 MAX. length allowed . ..............................................................................................................142
13.2 Oil trap . ...................................................................................................................................142
13.3 Air tight test. ............................................................................................................................143
13.4 Additional refrigerant charge...................................................................................................144
14. Control mode . ..................................................................................................................................145
14.1 Indoor unit mode control . .......................................................................................................145
14.2 Outdoor unit mode control ......................................................................................................148
15. Sensor parameter . ...........................................................................................................................149
16. Troubleshooting................................................................................................................................155
16.1 Trouble guide . .........................................................................................................................155
16.2 Fault codes . ............................................................................................................................161
17. Checking components . ...................................................................................................................170
17.1 Check refrigerant system........................................................................................................170
17.2 Check parts unit . ....................................................................................................................172
18. Disassembly and assembly for compressor and motor ...................................................................177
19. Control logic description. ..................................................................................................................194