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RXF50~71D5V1B
R32 split series
4P519439-18T - 2022.06
9.1
About connecting the electrical wiring .......................................................................................................................... 47
9.1.1
Precautions when connecting the electrical wiring....................................................................................... 47
9.1.2
Guidelines when connecting the electrical wiring......................................................................................... 49
9.1.3
Specifications of standard wiring components.............................................................................................. 50
9.2
To connect the electrical wiring to the outdoor unit..................................................................................................... 51
10.1
To finish the outdoor unit installation............................................................................................................................ 53
10.2
To close the outdoor unit ............................................................................................................................................... 53
11.1
Precautions when commissioning .................................................................................................................................. 54
11.2
Checklist before commissioning..................................................................................................................................... 54
11.3
Checklist during commissioning ..................................................................................................................................... 55
11.4
To perform a test run...................................................................................................................................................... 55
11.5
Starting up the outdoor unit........................................................................................................................................... 56
13.1
Overview: Maintenance and service .............................................................................................................................. 58
13.2
Maintenance safety precautions.................................................................................................................................... 58
13.3
Checklist for yearly maintenance of the outdoor unit................................................................................................... 59
13.4
About the compressor .................................................................................................................................................... 59
14.1
Overview: Troubleshooting ............................................................................................................................................ 60
14.2
Precautions when troubleshooting ................................................................................................................................ 60
14.3
Solving problems based on symptoms........................................................................................................................... 60
14.3.1
Symptom: Indoor units fall, vibrate or make noise ....................................................................................... 60
14.3.2
Symptom: The unit is NOT heating or cooling as expected........................................................................... 61
14.3.3
Symptom: Water leakage............................................................................................................................... 61
14.3.4
Symptom: Electrical leakage .......................................................................................................................... 61
14.3.5
Symptom: Unit does NOT function or burn damage..................................................................................... 61
14.4
Fault diagnosis using LED on outdoor unit PCB.............................................................................................................. 61
15.1
Overview: Disposal.......................................................................................................................................................... 62
15.2
To pump down ................................................................................................................................................................ 62
15.3
To start and stop forced cooling..................................................................................................................................... 63
15.3.1
To start and stop forced cooling using the indoor unit ON/OFF switch ....................................................... 63
15.3.2
To start and stop forced cooling using the indoor unit user interface ......................................................... 63
16.1
Wiring diagram................................................................................................................................................................ 64
16.1.1
Unified wiring diagram legend ....................................................................................................................... 64
16.2
Piping diagram ................................................................................................................................................................ 67
16.2.1
Piping diagram: Outdoor unit......................................................................................................................... 67
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Installer reference guide
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