Hisense 2AMW-42U4RRA, Technical & Service Manual, Page: 4 / 80

1. General ..................................................................................................................................................1
1.1 Features........................................................................................................................................1
1.2 Product lineup ...............................................................................................................................3
1.3 Nomenclature ...............................................................................................................................3
1.4 Unit installation .............................................................................................................................4
1.5 Working range...............................................................................................................................4
1.6 Product appearance .....................................................................................................................5
2. Specifications ........................................................................................................................................7
3. Outlines and dimensions .......................................................................................................................9
4. Electrical data .....................................................................................................................................15
5. Capacities and selection data..............................................................................................................16
5.1 Capacity characteristic charts .....................................................................................................16
5.2 Piping length correction factor ....................................................................................................20
5.3 Correction factors according to defrosting operation ..................................................................22
6. Sound pressure data ...........................................................................................................................23
7. Refrigerant cycle..................................................................................................................................25
8. Wiring diagram ....................................................................................................................................27
8.1 Electrical wiring diagrams ...........................................................................................................27
8.2 Control board picture ................................................................................................................. 32
8.3 Common wiring ...........................................................................................................................37
9. Field setting .........................................................................................................................................39
9.1 Outdoor unit DIP switch ..............................................................................................................39
9.2 Running parameter query ...........................................................................................................41
10. Piping work and refrigerant charge....................................................................................................44
10.1 MAX. length allowed .................................................................................................................44
10.2 Oil trap ......................................................................................................................................44
10.3 Air tight test ...............................................................................................................................45
10.4 Additional refrigerant charge .....................................................................................................45
11. Installation tools and installation flow chart........................................................................................46
11.1 Necessary tools and instrument list for installation .................................................................. 46
11.2 Installation flow chart ................................................................................................................47
12. Control mode .....................................................................................................................................48
13 Sensor parameter ...............................................................................................................................50
14. Troubleshooting .................................................................................................................................56
14.1 Trouble guide ...........................................................................................................................56
14.2 Fault codes ...............................................................................................................................60
15. Checking components ......................................................................................................................69
15.1 Check refrigerant system ..........................................................................................................69
15.2 Check parts unit .......................................................................................................................71
16. Disassembly and assembly for compressor and motor .....................................................................74
Multi-Split Type Air Conditioner Ser vice Manual
Table of Contents