Daikin 3MXM40A2V1B9 Installer's Reference Manual page 3

2MXM-A9, 3MXM-A9, 4MXM-A9, 5MXM-A9
R32 Split series
4P600463-7G - 2022.09
9 Electrical installation
9.1 About connecting the electrical wiring .......................................................................................................................... 49
9.1.1 Precautions when connecting the electrical wiring....................................................................................... 49
9.1.2 Guidelines when connecting the electrical wiring......................................................................................... 51
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
10.1 To finish the outdoor unit installation............................................................................................................................ 56
10.2 Closing the unit ............................................................................................................................................................... 56
10.2.1 To close the outdoor unit............................................................................................................................... 56
11 Configuration
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
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 ............................................................................................................................................. 63
12.5.1 About wiring error check................................................................................................................................ 63
12.5.2 To perform a test run ..................................................................................................................................... 64
12.6 Starting up the outdoor unit........................................................................................................................................... 65
13 Hand-over to the user
14 Maintenance and service
14.1 Overview: Maintenance and service .............................................................................................................................. 67
14.2 Maintenance safety precautions.................................................................................................................................... 67
14.3 Checklist for yearly maintenance of the outdoor unit................................................................................................... 68
14.4 About the compressor .................................................................................................................................................... 68
15 Troubleshooting
15.1 Overview: Troubleshooting ............................................................................................................................................ 69
15.2 Precautions when troubleshooting ................................................................................................................................ 69
15.3 Solving problems based on symptoms........................................................................................................................... 69
15.3.1 Symptom: Indoor units fall, vibrate or make noise ....................................................................................... 69
15.3.2 Symptom: The unit is NOT heating or cooling as expected........................................................................... 70
15.3.3 Symptom: Water leakage............................................................................................................................... 70
15.3.4 Symptom: Electrical leakage .......................................................................................................................... 70
15.3.5 Symptom: Priority room setting does NOT function ..................................................................................... 70
15.3.6 Symptom: Unit does NOT function or burn damage..................................................................................... 70
15.4 Solving problems based on LED behaviour .................................................................................................................... 71
15.4.1 Fault diagnosis using LED on outdoor unit PCB ............................................................................................. 71
16 Disposal
16.1 Overview: Disposal.......................................................................................................................................................... 73
16.2 To pump down ................................................................................................................................................................ 73
16.3 To start and stop forced cooling..................................................................................................................................... 74
17 Technical data
17.1 Wiring diagram................................................................................................................................................................ 76
17.1.1 Unified wiring diagram legend ....................................................................................................................... 76
17.2 Piping diagram ................................................................................................................................................................ 79
17.2.1 Piping diagram: Outdoor unit......................................................................................................................... 79
18 Glossary
Table of contents
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Installer reference guide
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