Table of contents
Installer reference guide
3
RXTJ-A_RXTA-C_RXTM-A_RXTP-A
R32 split series
4P728168-1 – 2023.03
9.1 About connecting the electrical wiring .......................................................................................................................... 45
9.1.1 Precautions when connecting the electrical wiring....................................................................................... 45
9.1.2 Guidelines when connecting the electrical wiring......................................................................................... 46
9.1.3 Specifications of standard wiring components.............................................................................................. 48
9.2 To connect the electrical wiring to the outdoor unit..................................................................................................... 48
10 Finishing the outdoor unit installation 50
10.1 To finish the outdoor unit installation............................................................................................................................ 50
10.2 Closing the unit ............................................................................................................................................................... 50
10.2.1 To close the outdoor unit............................................................................................................................... 50
11 Commissioning 51
11.1 Overview: Commissioning .............................................................................................................................................. 51
11.2 Precautions when commissioning .................................................................................................................................. 51
11.3 Checklist before commissioning ..................................................................................................................................... 52
11.4 Checklist during commissioning ..................................................................................................................................... 52
11.5 To perform a test run...................................................................................................................................................... 52
11.6 Starting up the outdoor unit........................................................................................................................................... 53
12 Hand-over to the user 54
13 Maintenance and service 55
13.1 Overview: Maintenance and service .............................................................................................................................. 56
13.2 Maintenance safety precautions .................................................................................................................................... 56
13.3 Checklist for yearly maintenance of the outdoor unit................................................................................................... 56
13.4 About the compressor .................................................................................................................................................... 56
14 Troubleshooting 58
14.1 Overview: Troubleshooting ............................................................................................................................................ 58
14.2 Precautions when troubleshooting ................................................................................................................................ 58
14.3 Solving problems based on symptoms........................................................................................................................... 58
14.3.1 Symptom: Indoor units fall, vibrate or make noise ....................................................................................... 58
14.3.2 Symptom: The unit is NOT heating or cooling as expected........................................................................... 59
14.3.3 Symptom: Water leakage............................................................................................................................... 59
14.3.4 Symptom: Electrical leakage .......................................................................................................................... 59
14.3.5 Symptom: Unit does NOT function or burn damage..................................................................................... 59
14.4 Fault diagnosis using LED on outdoor unit PCB.............................................................................................................. 59
15 Disposal 60
15.1 Overview: Disposal.......................................................................................................................................................... 60
15.2 To pump down ................................................................................................................................................................ 60
15.3 To start and stop forced cooling..................................................................................................................................... 61
15.3.1 To start and stop forced cooling using the indoor unit ON/OFF switch ....................................................... 61
15.3.2 To start and stop forced cooling using the indoor unit user interface ......................................................... 61
16 Technical data 62
16.1 Wiring diagram................................................................................................................................................................ 62
16.1.1 Unified wiring diagram legend ....................................................................................................................... 62
16.2 Piping diagram ................................................................................................................................................................ 65
16.2.1 Piping diagram: Outdoor unit......................................................................................................................... 65
17 Glossary 66
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