Table of contents
Installer and user reference guide
2
RXYSA8~12AMY1B
VRV 5-S system air conditioner
4P752782-1A – 2024.02
Table of contents
1 About this document 6
1.1 Meaning of warnings and symbols ................................................................................................................................ 6
2 General safety precautions 8
2.1 For the installer .............................................................................................................................................................. 8
2.1.1 General........................................................................................................................................................... 8
2.1.2 Installation site............................................................................................................................................... 9
2.1.3 Refrigerant — in case of R410A or R32......................................................................................................... 9
2.1.4 Electrical......................................................................................................................................................... 11
3 Specific installer safety instructions 14
3.1 Instructions for equipment using R32 refrigerant......................................................................................................... 18
For the user 20
4 User safety instructions 21
4.1 General ........................................................................................................................................................................... 21
4.2 Instructions for safe operation ...................................................................................................................................... 22
5 About the system 27
5.1 System layout ................................................................................................................................................................. 28
6 User interface 29
7 Operation 30
7.1 Before operation ............................................................................................................................................................ 30
7.2 Operation range ............................................................................................................................................................. 30
7.3 Operating the system..................................................................................................................................................... 31
7.3.1 About operating the system.......................................................................................................................... 31
7.3.2 About cooling, heating, fan only, and automatic operation......................................................................... 31
7.3.3 About the heating operation......................................................................................................................... 31
7.3.4 To operate the system (WITHOUT cool/heat changeover remote control switch)..................................... 32
7.3.5 To operate the system (WITH cool/heat changeover remote control switch) ............................................ 32
7.4 Using the dry program ................................................................................................................................................... 33
7.4.1 About the dry program.................................................................................................................................. 33
7.4.2 To use the dry program (WITHOUT cool/heat changeover remote control switch) ................................... 33
7.4.3 To use the dry program (WITH cool/heat changeover remote control switch)........................................... 34
7.5 Adjusting the air flow direction...................................................................................................................................... 34
7.5.1 About the air flow flap................................................................................................................................... 34
7.6 Setting the master user interface .................................................................................................................................. 35
7.6.1 About setting the master user interface....................................................................................................... 35
7.6.2 To designate the master user interface ........................................................................................................ 36
7.7 About control systems ................................................................................................................................................... 36
8 Energy saving and optimum operation 37
8.1 Available main operation methods................................................................................................................................ 38
8.2 Available comfort settings.............................................................................................................................................. 38
9 Maintenance and service 39
9.1 Precautions for maintenance and service ..................................................................................................................... 39
9.2 About the refrigerant ..................................................................................................................................................... 39
9.3 After-sales service .......................................................................................................................................................... 40
9.3.1 Recommended maintenance and inspection ............................................................................................... 40
9.3.2 Recommended maintenance and inspection cycles..................................................................................... 40
9.3.3 Shortened maintenance and replacement cycles......................................................................................... 41
10 Troubleshooting 42
10.1 Error codes: Overview.................................................................................................................................................... 43
10.2 Symptoms that are NOT system malfunctions .............................................................................................................. 46
10.2.1 Symptom: The system does not operate ...................................................................................................... 46
10.2.2 Symptom: Cool/Heat cannot be changed over............................................................................................. 46
10.2.3 Symptom: Fan operation is possible, but cooling and heating do not work................................................ 46
10.2.4 Symptom: The fan speed does not correspond to the setting..................................................................... 46
10.2.5 Symptom: The fan direction does not correspond to the setting ................................................................ 47
10.2.6 Symptom: White mist comes out of a unit (Indoor unit).............................................................................. 47
10.2.7 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)....................................................... 47