Daikin Multi+ R32 Split Series Installer's Reference Manual page 3

4MWXM-A9
R32 Split series
4P708645-1 - 2022.09
9 Electrical installation
9.1 About connecting the electrical wiring .......................................................................................................................... 48
9.1.1 Precautions when connecting the electrical wiring....................................................................................... 48
9.1.2 Guidelines when connecting the electrical wiring......................................................................................... 50
9.1.3 Specifications of standard wiring components.............................................................................................. 52
9.2 To connect the electrical wiring to the outdoor unit..................................................................................................... 52
10 Finishing the outdoor unit installation
10.1 To finish the outdoor unit installation............................................................................................................................ 54
10.2 To close the outdoor unit ............................................................................................................................................... 54
11 Configuration
11.1 About standby electricity saving function ...................................................................................................................... 55
11.1.1 To turn ON standby electricity saving function ............................................................................................. 55
11.2 About priority room function ......................................................................................................................................... 56
11.2.1 To set the priority room function................................................................................................................... 56
11.3 About night quiet mode.................................................................................................................................................. 56
11.3.1 To turn ON the night quiet mode .................................................................................................................. 56
11.4 About heat mode lock .................................................................................................................................................... 57
11.4.1 To turn ON heat mode lock............................................................................................................................ 57
12 Commissioning
12.1 Overview: Commissioning .............................................................................................................................................. 58
12.2 Precautions when commissioning .................................................................................................................................. 58
12.3 Checklist before commissioning..................................................................................................................................... 59
12.4 Checklist during commissioning ..................................................................................................................................... 59
12.5 Trial operation and testing ............................................................................................................................................. 59
12.5.1 About wiring error check................................................................................................................................ 60
12.5.2 To perform a test run ..................................................................................................................................... 61
12.6 Starting up the outdoor unit........................................................................................................................................... 62
13 Hand-over to the user
14 Maintenance and service
14.1 Overview: Maintenance and service .............................................................................................................................. 64
14.2 Maintenance safety precautions.................................................................................................................................... 64
14.3 Checklist for yearly maintenance of the outdoor unit................................................................................................... 65
14.4 About the compressor .................................................................................................................................................... 65
15 Troubleshooting
15.1 Overview: Troubleshooting ............................................................................................................................................ 66
15.2 Precautions when troubleshooting ................................................................................................................................ 66
15.3 Solving problems based on symptoms........................................................................................................................... 66
15.3.1 Symptom: Indoor units fall, vibrate or make noise ....................................................................................... 66
15.3.2 Symptom: The unit is NOT heating or cooling as expected........................................................................... 67
15.3.3 Symptom: Water leakage............................................................................................................................... 67
15.3.4 Symptom: Electrical leakage .......................................................................................................................... 67
15.3.5 Symptom: Priority room setting does NOT function ..................................................................................... 67
15.3.6 Symptom: Unit does NOT function or burn damage..................................................................................... 67
15.4 Solving problems based on LED behaviour .................................................................................................................... 67
15.4.1 Fault diagnosis using LED on outdoor unit PCB ............................................................................................. 67
16 Disposal
16.1 Overview: Disposal.......................................................................................................................................................... 70
16.2 To pump down ................................................................................................................................................................ 70
16.3 To start and stop forced cooling..................................................................................................................................... 71
17 Technical data
17.1 Wiring diagram................................................................................................................................................................ 72
17.1.1 Unified wiring diagram legend ....................................................................................................................... 72
17.2 Piping diagram: Outdoor unit ......................................................................................................................................... 74
18 Glossary
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Installer reference guide
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