Table of Contents
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Table of Contents
1 About the documentation
1.1
About this document..................................................................
2 Specific installer safety instructions
For the user
3 User safety instructions
3.1
General......................................................................................
3.2
Instructions for safe operation ...................................................
4 About the system
4.1
System layout............................................................................
5 User interface
6 Operation
6.1
Operation range ........................................................................ 10
6.2
Operating the system ................................................................ 10
6.2.1
About operating the system ........................................ 10
6.2.2
About cooling, heating, fan only, and automatic
operation ..................................................................... 10
6.2.3
About the heating operation........................................ 10
6.2.4
To operate the system (WITHOUT cool/heat
changeover remote control switch) ............................. 10
6.2.5
To operate the system (WITH cool/heat changeover
remote control switch)................................................. 10
6.3
Using the dry program............................................................... 11
6.3.1
About the dry program ................................................ 11
6.3.2
To use the dry program (WITHOUT cool/heat
changeover remote control switch) ............................. 11
6.3.3
To use the dry program (WITH cool/heat changeover
remote control switch)................................................. 11
6.4
Adjusting the air flow direction................................................... 11
6.4.1
About the air flow flap ................................................. 11
6.5
Setting the master user interface .............................................. 12
6.5.1
About setting the master user interface ...................... 12
7 Maintenance and service
7.1
About the refrigerant.................................................................. 12
7.2
After-sales service and warranty ............................................... 12
7.2.1
Warranty period .......................................................... 12
7.2.2
Recommended maintenance and inspection.............. 12
8 Troubleshooting
8.1
Error codes: Overview............................................................... 13
8.2
Symptoms that are NOT system malfunctions .......................... 14
8.2.1
Symptom: The system does not operate .................... 14
8.2.2
Symptom: Cool/Heat cannot be changed over ........... 14
8.2.3
Symptom: Fan operation is possible, but cooling and
heating do not work..................................................... 14
8.2.4
Symptom: The fan speed does not correspond to the
setting ......................................................................... 14
8.2.5
Symptom: The fan direction does not correspond to
the setting ................................................................... 14
8.2.6
Symptom: White mist comes out of a unit (Indoor
unit) ............................................................................. 15
8.2.7
Symptom: White mist comes out of a unit (Indoor
unit, outdoor unit) ........................................................ 15
8.2.8
Symptom: The user interface reads "U4" or "U5" and
stops, but then restarts after a few minutes ................ 15
8.2.9
Symptom: Noise of air conditioners (Indoor unit)........ 15
8.2.10
Symptom: Noise of air conditioners (Indoor unit,
outdoor unit)................................................................ 15
8.2.11
Symptom: Noise of air conditioners (Outdoor unit) ..... 15
8.2.12
Symptom: Dust comes out of the unit ......................... 15
8.2.13
Symptom: The units can give off odours..................... 15
8.2.14
Symptom: The outdoor unit fan does not spin ............ 15
RKXYQ5T8 + RKXYQ8T7Y1B
VRV IV compressor unit for indoor installation
4P499900-1B – 2021.12
8.2.15
Symptom: The display shows "88"............................... 15
8.2.16
Symptom: The compressor in the outdoor unit does
not stop after a short heating operation ....................... 15
8.2.17
Symptom: The inside of an outdoor unit is warm
even when the unit has stopped .................................. 15
6
8.2.18
Symptom: Hot air can be felt when the indoor unit is
6
stopped ........................................................................ 15
6
9 Relocation
10 Disposal
7
7
For the installer
7
11 About the box
8
11.1
Compressor unit ......................................................................... 16
9
11.1.1
To remove the accessories from the compressor unit . 16
9
11.1.2
To remove the transportation stay ............................... 16
10
11.1.3
To remove the transportation EPS............................... 16
12 About the units and options
10
12.1
About the compressor unit and heat exchanger unit.................. 16
12.2
System layout............................................................................. 17
12.3
Combining units and options ...................................................... 17
12.3.1
Possible options for the compressor unit and heat
exchanger unit ............................................................. 17
13 Unit installation
13.1
Preparing the installation site ..................................................... 18
13.1.1
Installation site requirements of the compressor unit... 18
13.2
Opening the unit ......................................................................... 18
13.2.1
To open the compressor unit ....................................... 18
13.3
Mounting the compressor unit .................................................... 18
13.3.1
Guidelines when installing the compressor unit........... 18
14 Piping installation
14.1
Preparing refrigerant piping........................................................ 19
14.1.1
Refrigerant piping requirements................................... 19
14.1.2
Refrigerant piping material........................................... 19
14.1.3
To select the piping size .............................................. 19
14.1.4
To select refrigerant branch kits................................... 20
14.1.5
Refrigerant piping length and height difference ........... 20
12
14.2
Connecting the refrigerant piping ............................................... 20
14.2.1
Using the stop valve and service port .......................... 20
14.2.2
To remove the pinched pipes....................................... 21
14.2.3
To connect the refrigerant piping to the compressor
unit ............................................................................... 21
14.3
Checking the refrigerant piping .................................................. 22
13
14.3.1
About checking the refrigerant piping .......................... 22
14.3.2
Checking refrigerant piping: General guidelines .......... 23
14.3.3
Checking refrigerant piping: Setup............................... 23
14.3.4
To perform a leak test .................................................. 23
14.3.5
To perform vacuum drying ........................................... 24
14.3.6
To insulate the refrigerant piping ................................. 24
14.4
Charging refrigerant ................................................................... 24
14.4.1
Precautions when charging refrigerant ........................ 24
14.4.2
To determine the additional refrigerant amount ........... 24
14.4.3
To charge refrigerant ................................................... 25
14.4.4
Error codes when charging refrigerant......................... 26
14.4.5
To fix the fluorinated greenhouse gases label ............. 26
15 Electrical installation
15.1
About electrical compliance........................................................ 26
15.2
Safety device requirements........................................................ 26
15.3
Field wiring: Overview ................................................................ 27
15.4
To connect the electrical wiring on the compressor unit ............ 27
15.5
To check the insulation resistance of the compressor ............... 28
16 Configuration
16.1
Making field settings................................................................... 29
16.1.1
About making field settings .......................................... 29
Table of Contents
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Installation and operation manual
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