Table of Contents
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(A)RXF20~42C5V1B
R32 split series
4P519439-10J - 2021.06
8.1
Preparing electrical wiring .............................................................................................................................................. 43
8.1.1
About preparing electrical wiring................................................................................................................... 43
8.2
Connecting the electrical wiring..................................................................................................................................... 44
8.2.1
About connecting the electrical wiring .......................................................................................................... 44
8.2.2
Precautions when connecting the electrical wiring....................................................................................... 44
8.2.3
Guidelines when connecting the electrical wiring......................................................................................... 45
8.2.4
Specifications of standard wiring components.............................................................................................. 46
8.2.5
To connect the electrical wiring to the outdoor unit .................................................................................... 46
9.1
To finish the outdoor unit installation............................................................................................................................ 47
9.2
To close the outdoor unit ............................................................................................................................................... 47
10.1
Overview: Commissioning .............................................................................................................................................. 48
10.2
Precautions when commissioning .................................................................................................................................. 48
10.3
Checklist before commissioning..................................................................................................................................... 48
10.4
Checklist during commissioning ..................................................................................................................................... 49
10.5
To perform a test run...................................................................................................................................................... 49
10.6
Starting up the outdoor unit........................................................................................................................................... 50
12.1
Overview: Maintenance and service .............................................................................................................................. 52
12.2
Maintenance safety precautions.................................................................................................................................... 52
12.3
Checklist for yearly maintenance of the outdoor unit................................................................................................... 52
13.1
Overview: Troubleshooting ............................................................................................................................................ 54
13.2
Precautions when troubleshooting ................................................................................................................................ 54
13.3
Solving problems based on symptoms........................................................................................................................... 54
13.3.1
Symptom: Indoor units fall, vibrate or make noise ....................................................................................... 54
13.3.2
Symptom: The unit is NOT heating or cooling as expected........................................................................... 55
13.3.3
Symptom: Water leakage............................................................................................................................... 55
13.3.4
Symptom: Electrical leakage .......................................................................................................................... 55
13.3.5
Symptom: Unit does NOT function or burn damage..................................................................................... 55
14.1
Overview: Disposal.......................................................................................................................................................... 56
14.2
To pump down ................................................................................................................................................................ 56
14.3
To start and stop forced cooling..................................................................................................................................... 57
14.3.1
To start and stop forced cooling using the indoor unit ON/OFF switch ....................................................... 57
14.3.2
To start and stop forced cooling using the indoor unit user interface ......................................................... 57
15.1
Wiring diagram................................................................................................................................................................ 59
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Installer reference guide
3
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