Table of Contents
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Table of contents
Installer and user reference guide
2
Table of contents
1.1
About this document......................................................................................................................................................
2.1
About the documentation..............................................................................................................................................
2.1.1
Meaning of warnings and symbols................................................................................................................
2.2
For the installer ..............................................................................................................................................................
2.2.1
General...........................................................................................................................................................
2.2.2
Installation site...............................................................................................................................................
2.2.3
Refrigerant - in case of R410A or R32.........................................................................................................
2.2.4
Electrical.........................................................................................................................................................
4.1
General ...........................................................................................................................................................................
4.2
Instructions for safe operation ......................................................................................................................................
5.1
Components ...................................................................................................................................................................
5.2
Information requirements for fan coil units ..................................................................................................................
8.1
Operation range .............................................................................................................................................................
8.2
About operation modes .................................................................................................................................................
8.2.1
Basic operation modes ..................................................................................................................................
8.2.2
Special heating operation modes..................................................................................................................
8.2.3
Adjusting the airflow direction ......................................................................................................................
8.3
To operate the system ...................................................................................................................................................
10.1
Precautions for maintenance and service .....................................................................................................................
10.2
Cleaning the unit exterior and air filter .........................................................................................................................
10.2.1
To clean the exterior......................................................................................................................................
10.2.2
To clean the air filter......................................................................................................................................
10.3
Maintenance before a long stop period ........................................................................................................................
10.4
Maintenance after a long stop period ...........................................................................................................................
10.5
About the refrigerant .....................................................................................................................................................
11.1
Symptoms that are NOT system malfunctions ..............................................................................................................
11.1.1
Symptom: The system does not operate ......................................................................................................
11.1.2
Symptom: The fan speed does not correspond to the setting.....................................................................
11.1.3
Symptom: The fan direction does not correspond to the setting ................................................................
11.1.4
Symptom: White mist comes out of a unit (Indoor unit)..............................................................................
11.1.5
Symptom: White mist comes out of a unit (Indoor unit, outdoor unit).......................................................
11.1.6
Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes.........
11.1.7
Symptom: Noise of air conditioners (Indoor unit) ........................................................................................
11.1.8
Symptom: Noise of air conditioners (Indoor unit, outdoor unit) .................................................................
11.1.9
Symptom: Dust comes out of the unit ..........................................................................................................
11.1.10 Symptom: The units can give off odours.......................................................................................................
11.1.11 Symptom: The fan runs after the unit is turned off via the user interface ..................................................
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FXKQ-A
VRV system air conditioner
4P747548-1 - 2023.11
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Table of Contents
Troubleshooting
