Daikin FXFA20A2VEB - Default Chapter; Table of Contents

Table of contents
Installer and user reference guide
2
FXFA20~125A2VEB
VRV system air conditioner
4P599624-1A – 2020.06
Table of contents
1 About the documentation 4
1.1 About this document ...................................................................................................................................................... 4
2 General safety precautions 5
2.1 About the documentation .............................................................................................................................................. 5
2.1.1 Meaning of warnings and symbols ................................................................................................................ 5
2.2 For the installer............................................................................................................................................................... 6
2.2.1 General ........................................................................................................................................................... 6
2.2.2 Installation site ............................................................................................................................................... 7
2.2.3 Refrigerant — in case of R410A or R32.......................................................................................................... 11
2.2.4 Brine................................................................................................................................................................ 12
2.2.5 Water .............................................................................................................................................................. 13
2.2.6 Electrical ......................................................................................................................................................... 13
3 Specific installer safety instructions 16
For the user 19
4 User safety instructions 20
4.1 General............................................................................................................................................................................ 20
4.2 Instructions for safe operation ....................................................................................................................................... 21
5 About the system 26
5.1 System layout.................................................................................................................................................................. 26
5.2 Information requirements for fan coil units................................................................................................................... 27
6 User interface 28
7 Before operation 29
8 Operation 30
8.1 Operation range.............................................................................................................................................................. 30
8.2 About operation modes.................................................................................................................................................. 30
8.2.1 Basic operation modes................................................................................................................................... 30
8.2.2 Special heating operation modes................................................................................................................... 31
8.2.3 Adjusting the airflow direction....................................................................................................................... 31
8.2.4 Active circulation airflow................................................................................................................................ 32
8.3 To operate the system.................................................................................................................................................... 32
9 Energy saving and optimum operation 33
10 Maintenance and service 34
10.1 Precautions for maintenance and service...................................................................................................................... 34
10.2 Cleaning the air filter, suction grille, air outlet and outside panels............................................................................... 35
10.2.1 To clean the air filter ...................................................................................................................................... 35
10.2.2 To clean the suction grille .............................................................................................................................. 36
10.2.3 To clean the air outlet and outside panels .................................................................................................... 37
10.3 Maintenance before a long stop period......................................................................................................................... 38
10.4 Maintenance after a long stop period............................................................................................................................ 38
10.5 About the refrigerant...................................................................................................................................................... 38
10.5.1 About the refrigerant leakage sensor ............................................................................................................ 39
11 Troubleshooting 41
11.1 Symptoms that are NOT system malfunctions............................................................................................................... 42
11.1.1 Symptom: The system does not operate....................................................................................................... 42
11.1.2 Symptom: The fan speed does not correspond to the setting...................................................................... 42
11.1.3 Symptom: The fan direction does not correspond to the setting................................................................. 42
11.1.4 Symptom: White mist comes out of a unit (Indoor unit) .............................................................................. 43
11.1.5 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)........................................................ 43
11.1.6 Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes.......... 43
11.1.7 Symptom: Noise of air conditioners (Indoor unit)......................................................................................... 43
11.1.8 Symptom: Noise of air conditioners (Indoor unit, outdoor unit) .................................................................. 43
11.1.9 Symptom: Dust comes out of the unit........................................................................................................... 43
11.1.10 Symptom: The units can give off odours ....................................................................................................... 43
12 Relocation 44