Table of contents
Installer reference guide
3
2MXM68+3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
4P600463-1D – 2021.03
8.7 To fix the fluorinated greenhouse gases label ............................................................................................................... 49
9 Electrical installation 50
9.1 About connecting the electrical wiring .......................................................................................................................... 50
9.1.1 Precautions when connecting the electrical wiring....................................................................................... 50
9.1.2 Guidelines when connecting the electrical wiring......................................................................................... 52
9.1.3 Specifications of standard wiring components.............................................................................................. 53
9.2 To connect the electrical wiring to the outdoor unit..................................................................................................... 54
10 Finishing the outdoor unit installation 56
10.1 To finish the outdoor unit installation............................................................................................................................ 56
10.2 To close the outdoor unit ............................................................................................................................................... 56
11 Configuration 57
11.1 About standby electricity saving function ...................................................................................................................... 57
11.1.1 To turn on standby electricity saving function .............................................................................................. 57
11.2 About priority room function ......................................................................................................................................... 58
11.2.1 To set the priority room function................................................................................................................... 58
11.3 About night quiet mode.................................................................................................................................................. 58
11.3.1 To turn on the night quiet mode.................................................................................................................... 58
11.4 About heat mode lock .................................................................................................................................................... 59
11.4.1 To turn on heat mode lock............................................................................................................................. 59
11.5 About cool mode lock ..................................................................................................................................................... 59
11.5.1 To turn on cool mode lock ............................................................................................................................. 59
12 Commissioning 61
12.1 Overview: Commissioning .............................................................................................................................................. 61
12.2 Precautions when commissioning .................................................................................................................................. 61
12.3 Checklist before commissioning ..................................................................................................................................... 62
12.4 Checklist during commissioning ..................................................................................................................................... 62
12.5 Trial operation and testing ............................................................................................................................................. 62
12.5.1 About wiring error check................................................................................................................................ 63
12.5.2 To perform a test run ..................................................................................................................................... 64
12.6 Starting up the outdoor unit........................................................................................................................................... 64
13 Hand-over to the user 65
14 Maintenance and service 66
14.1 Overview: Maintenance and service .............................................................................................................................. 66
14.2 Maintenance safety precautions .................................................................................................................................... 66
14.3 Checklist for yearly maintenance of the outdoor unit................................................................................................... 66
14.4 About the compressor .................................................................................................................................................... 67
15 Troubleshooting 68
15.1 Overview: Troubleshooting ............................................................................................................................................ 68
15.2 Precautions when troubleshooting ................................................................................................................................ 68
15.3 Solving problems based on symptoms........................................................................................................................... 68
15.3.1 Symptom: Indoor units fall, vibrate or make noise ....................................................................................... 68
15.3.2 Symptom: The unit is NOT heating or cooling as expected........................................................................... 69
15.3.3 Symptom: Water leakage............................................................................................................................... 69
15.3.4 Symptom: Electrical leakage .......................................................................................................................... 69
15.3.5 Symptom: Priority room setting does NOT function ..................................................................................... 69
15.3.6 Symptom: Unit does NOT function or burn damage..................................................................................... 69
15.4 Solving problems based on LED behaviour .................................................................................................................... 70
15.4.1 Fault diagnosis using LED on outdoor unit PCB ............................................................................................. 70
16 Disposal 72
16.1 Overview: Disposal.......................................................................................................................................................... 72
16.2 To pump down ................................................................................................................................................................ 72
16.3 To start and stop forced cooling..................................................................................................................................... 73
17 Technical data 75
17.1 Wiring diagram................................................................................................................................................................ 75
17.1.1 Unified wiring diagram legend ....................................................................................................................... 75
17.2 Piping diagram: Outdoor unit ......................................................................................................................................... 77
18 Glossary 82
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