Table of Contents
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Table of contents
Table of contents
1 About the documentation
1.1
About this document..................................................................
2 Specific installer safety instructions
3.1
General......................................................................................
3.2
Instructions for safe operation ...................................................
4.1
System layout............................................................................
6.1
Operation range ........................................................................
6.2
Operating the system ................................................................
6.2.1
About operating the system ........................................
6.2.2
operation .....................................................................
6.2.3
About the heating operation........................................
6.2.4
changeover remote control switch) .............................
6.2.5
remote control switch).................................................
6.3
Using the dry program...............................................................
6.3.1
About the dry program ................................................
6.3.2
changeover remote control switch) .............................
6.3.3
remote control switch).................................................
6.4
Adjusting the air flow direction...................................................
6.4.1
About the air flow flap .................................................
6.5
Setting the master user interface ..............................................
6.5.1
About setting the master user interface ......................
7.1
About the refrigerant..................................................................
7.2
After-sales service and warranty ...............................................
7.2.1
Warranty period ..........................................................
7.2.2
Recommended maintenance and inspection..............
8.1
Error codes: Overview............................................................... 10
8.2
Symptoms that are NOT system malfunctions .......................... 11
8.2.1
Symptom: The system does not operate .................... 11
8.2.2
Symptom: Cool/Heat cannot be changed over ........... 11
8.2.3
Symptom: Fan operation is possible, but cooling and
heating do not work..................................................... 11
8.2.4
Symptom: The fan speed does not correspond to the
setting ......................................................................... 11
8.2.5
Symptom: The fan direction does not correspond to
the setting ................................................................... 11
8.2.6
Symptom: White mist comes out of a unit (Indoor
unit) ............................................................................. 11
8.2.7
Symptom: White mist comes out of a unit (Indoor
unit, outdoor unit) ........................................................ 11
8.2.8
Symptom: The user interface reads "U4" or "U5" and
stops, but then restarts after a few minutes ................ 11
8.2.9
Symptom: Noise of air conditioners (Indoor unit)........ 11
8.2.10
Symptom: Noise of air conditioners (Indoor unit,
outdoor unit)................................................................ 11
8.2.11
Symptom: Noise of air conditioners (Outdoor unit) ..... 11
8.2.12
Symptom: Dust comes out of the unit ......................... 12
8.2.13
Symptom: The units can give off odours..................... 12
8.2.14
Symptom: The outdoor unit fan does not spin ............ 12
Installation and operation manual
2
8.2.15
8.2.16
not stop after a short heating operation ....................... 12
8.2.17
even when the unit has stopped .................................. 12
3
8.2.18
3
stopped ........................................................................ 12
3
4
4
4
5
11.1
6
............................................................................ 12
11.2
To remove the accessories from the outdoor unit ...................... 12
6
11.3
Accessory pipes: Diameters....................................................... 12
6
11.4
To remove the transportation stay.............................................. 12
6
6
12.1
About the outdoor unit ................................................................ 13
7
12.2
System layout............................................................................. 13
7
13.1
Opening the unit ......................................................................... 13
7
13.1.1
To open the outdoor unit.............................................. 13
7
13.1.2
unit ............................................................................... 13
7
13.2
Mounting the outdoor unit........................................................... 14
7
13.2.1
To provide the installation structure ............................. 14
8
8
14.1
Preparing refrigerant piping........................................................ 14
14.1.1
Refrigerant piping requirements................................... 14
8
14.1.2
To select the piping size .............................................. 15
8
14.1.3
To select refrigerant branch kits................................... 16
8
14.1.4
Multiple outdoor units: Possible layouts....................... 16
8
14.2
Connecting the refrigerant piping ............................................... 17
8
14.2.1
To route the refrigerant piping...................................... 17
8
14.2.2
14.2.3
To connect the multi connection piping kit ................... 17
9
14.2.4
To connect the refrigerant branching kit ...................... 17
9
14.2.5
To protect against contamination................................. 18
9
14.2.6
Using the stop valve and service port .......................... 18
9
14.2.7
To remove the spun pipes ........................................... 19
9
14.3
Checking the refrigerant piping .................................................. 19
14.3.1
About checking the refrigerant piping .......................... 19
9
14.3.2
Checking refrigerant piping: General guidelines .......... 20
14.3.3
Checking refrigerant piping: Setup............................... 20
14.3.4
To perform a leak test .................................................. 20
14.3.5
To perform vacuum drying ........................................... 20
14.3.6
To insulate the refrigerant piping ................................. 20
14.4
Charging refrigerant ................................................................... 21
14.4.1
Precautions when charging refrigerant ........................ 21
14.4.2
About charging refrigerant ........................................... 21
14.4.3
To determine the additional refrigerant amount ........... 21
14.4.4
To charge refrigerant: Flow chart................................. 23
14.4.5
To charge refrigerant ................................................... 24
14.4.6
Step 6: To manually charge refrigerant........................ 25
14.4.7
Error codes when charging refrigerant......................... 25
14.4.8
Checks after charging refrigerant................................. 25
15.1
Safety device requirements........................................................ 26
15.2
Field wiring: Overview ................................................................ 26
15.3
To route and fix the transmission wiring..................................... 26
15.4
To connect the transmission wiring ............................................ 27
15.5
To finish the transmission wiring ................................................ 27
15.6
To route and fix the power supply .............................................. 27
VRV IV+ heat pump for high ambient temperatures
4P546223-1C - 2021.11
12
12
12
12
13
13
14
26
RXYTQ
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Troubleshooting
