Table of contents
Installer reference guide
3
2(A)MXM40+50 + 2(A)MXF40+50
R32 Split series
4P600463-2C – 2020.08
8.5 To determine the complete recharge amount .............................................................................................................. 48
8.6 To charge additional refrigerant..................................................................................................................................... 48
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..................................................................................................... 53
10 Finishing the outdoor unit installation 55
10.1 To finish the outdoor unit installation............................................................................................................................ 55
10.2 To close the outdoor unit ............................................................................................................................................... 55
11 Configuration 56
11.1 About ECONO mode prohibition setting ........................................................................................................................ 56
11.1.1 To turn on ECONO mode prohibition setting ................................................................................................ 56
11.2 About night quiet mode.................................................................................................................................................. 57
11.2.1 To turn on the night quiet mode.................................................................................................................... 57
11.3 About heat mode lock .................................................................................................................................................... 57
11.3.1 To turn on heat mode lock............................................................................................................................. 57
11.4 About standby electricity saving function ...................................................................................................................... 58
11.4.1 To turn on standby electricity saving function .............................................................................................. 58
12 Commissioning 59
12.1 Overview: Commissioning .............................................................................................................................................. 59
12.2 Precautions when commissioning .................................................................................................................................. 59
12.3 Checklist before commissioning ..................................................................................................................................... 59
12.4 Checklist during commissioning ..................................................................................................................................... 60
12.5 Trial operation and testing ............................................................................................................................................. 60
12.5.1 To perform a test run ..................................................................................................................................... 60
12.6 Starting up the outdoor unit........................................................................................................................................... 61
13 Hand-over to the user 62
14 Maintenance and service 63
14.1 Overview: Maintenance and service .............................................................................................................................. 63
14.2 Maintenance safety precautions .................................................................................................................................... 63
14.3 Checklist for yearly maintenance of the outdoor unit................................................................................................... 63
14.4 About the compressor .................................................................................................................................................... 64
15 Troubleshooting 65
15.1 Overview: Troubleshooting ............................................................................................................................................ 65
15.2 Precautions when troubleshooting ................................................................................................................................ 65
15.3 Solving problems based on symptoms........................................................................................................................... 65
15.3.1 Symptom: Indoor units fall, vibrate or make noise ....................................................................................... 65
15.3.2 Symptom: The unit is NOT heating or cooling as expected........................................................................... 66
15.3.3 Symptom: Water leakage............................................................................................................................... 66
15.3.4 Symptom: Electrical leakage .......................................................................................................................... 66
15.3.5 Symptom: Unit does NOT function or burn damage..................................................................................... 66
15.4 Solving problems based on LED behaviour .................................................................................................................... 66
15.4.1 Fault diagnosis using LED on outdoor unit PCB ............................................................................................. 66
16 Disposal 68
16.1 Overview: Disposal.......................................................................................................................................................... 68
16.2 To pump down ................................................................................................................................................................ 68
16.3 To start and stop forced cooling..................................................................................................................................... 69
16.3.1 To start and stop forced cooling using the indoor unit ON/OFF switch ....................................................... 69
16.3.2 To start and stop forced cooling using the indoor unit user interface ......................................................... 69
17 Technical data 70
17.1 Wiring diagram................................................................................................................................................................ 70
17.1.1 Unified wiring diagram legend ....................................................................................................................... 70
17.2 Piping diagram: Outdoor unit ......................................................................................................................................... 72
18 Glossary 74
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