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1 General safety precautions
Installer and user reference guide
3
RXYSQ4~Y1B
VRV IV-S system air conditioner
4P404676-1A – 2016.03
Overview: Troubleshooting........................................................
Precautions when troubleshooting ............................................
Solving problems based on error codes....................................
Error codes: Overview ................................................ 39
Overview: Technical data ..........................................................
Dimensions: Outdoor unit ..........................................................
Service space: Outdoor unit ......................................................
Components: Outdoor unit ........................................................
Piping diagram: Outdoor unit.....................................................
Wiring diagram: Outdoor unit ....................................................
Technical specifications: Outdoor unit.......................................
Capacity table: Indoor unit.........................................................
System layout ............................................................................
Operation range ........................................................................
Operating the system ................................................................
About operating the system ........................................ 55
About the heating operation........................................ 55
Using the dry program ...............................................................
About the dry program ................................................ 56
Adjusting the air flow direction...................................................
About the air flow flap ................................................. 56
Setting the master user interface ..............................................
About setting the master user interface ...................... 57
To designate the master user interface (VRV DX)...... 57
To designate the master user interface (RA DX) ........ 57
About control systems................................................. 57
18 Energy saving and optimum operation
Available main operation methods ............................................
Available comfort settings .........................................................
Maintenance after a long stop period ........................................
Maintenance before a long stop period .....................................
About the refrigerant..................................................................
After-sales service and warranty ...............................................
Warranty period .......................................................... 59
Recommended maintenance and inspection.............. 59
Recommended maintenance and inspection cycles... 59
Shortened maintenance and replacement cycles ....... 59
Error codes: Overview ...............................................................
Symptoms that are not air conditioner troubles.........................
Symptom: The system does not operate .................... 61
Symptom: Cool/Heat cannot be changed over ........... 61
Symptom: Noise of air conditioners (Indoor unit)......... 62
20.2.10 Symptom: Noise of air conditioners (Indoor unit,
outdoor unit)................................................................. 62
20.2.11 Symptom: Noise of air conditioners (Outdoor unit) ...... 62
20.2.12 Symptom: Dust comes out of the unit .......................... 62
20.2.13 Symptom: The units can give off odours...................... 62
20.2.14 Symptom: The outdoor unit fan does not spin ............. 62
20.2.15 Symptom: The display shows "88"............................... 62
20.2.16 Symptom: The compressor in the outdoor unit does
not stop after a short heating operation ....................... 62
20.2.17 Symptom: The inside of an outdoor unit is warm
even when the unit has stopped .................................. 62
20.2.18 Symptom: Hot air can be felt when the indoor unit is
stopped ........................................................................ 62
1
General safety precautions
1.1
About the documentation
▪ The original documentation is written in English. All other
languages are translations.
▪ The precautions described in this document cover very important
topics, follow them carefully.
▪ The installation of the system, and all activities described in the
installation manual and the installer reference guide must be
performed by an authorized installer.
1.1.1
Meaning of warnings and symbols
DANGER
Indicates a situation that results in death or serious injury.
DANGER: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
DANGER: RISK OF BURNING
Indicates a situation that could result in burning because of
extreme hot or cold temperatures.
WARNING: FLAMMABLE MATERIAL
WARNING
Indicates a situation that could result in death or serious
injury.
CAUTION
Indicates a situation that could result in minor or moderate
injury.
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