Daikin FDA125A5VEB - Table of Contents

Table of Contents
Installer and user reference guide
2
FDA125A5VEB
Split system air conditioners
4P495031-1B – 2022.10
Table of Contents
1 About the documentation 4
1.1 About this document ...................................................................................................................................................... 4
1.2 Meaning of warnings and symbols................................................................................................................................. 5
2 General safety precautions 7
2.1 For the installer............................................................................................................................................................... 7
2.1.1 General ........................................................................................................................................................... 7
2.1.2 Installation site ............................................................................................................................................... 8
2.1.3 Refrigerant — in case of R410A or R32.......................................................................................................... 11
2.1.4 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................................................................................................................................... 31
8.2.2 Special heating operation modes................................................................................................................... 31
8.3 To operate the system.................................................................................................................................................... 31
9 Energy saving and optimum operation 32
10 Maintenance and service 33
10.1 Precautions for maintenance and service...................................................................................................................... 33
10.2 Cleaning the air filter and air outlet ............................................................................................................................... 33
10.2.1 To clean the air filter ...................................................................................................................................... 33
10.2.2 To clean the air outlet .................................................................................................................................... 34
10.3 Maintenance before a long stop period......................................................................................................................... 34
10.4 Maintenance after a long stop period............................................................................................................................ 35
10.5 About the refrigerant...................................................................................................................................................... 35
11 Troubleshooting 37
11.1 Symptoms that are NOT system malfunctions............................................................................................................... 38
11.1.1 Symptom: The system does not operate....................................................................................................... 38
11.1.2 Symptom: White mist comes out of a unit (Indoor unit) .............................................................................. 39
11.1.3 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)........................................................ 39
11.1.4 Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes.......... 39
11.1.5 Symptom: Noise of air conditioners (Indoor unit)......................................................................................... 39
11.1.6 Symptom: Noise of air conditioners (Indoor unit, outdoor unit) .................................................................. 40
11.1.7 Symptom: Dust comes out of the unit........................................................................................................... 40
11.1.8 Symptom: The units can give off odours ....................................................................................................... 40
12 Relocation 41
13 Disposal 42
For the installer 43
14 About the box 44
14.1 Indoor unit ...................................................................................................................................................................... 44
14.1.1 To unpack and handle the unit ...................................................................................................................... 44
14.1.2 To remove the accessories from the indoor unit .......................................................................................... 45