Daikin FXNA40A2VEB Bedienungsanleitung

Daikin Nicht kategorisiert FXNA40A2VEB

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Installer and user reference guide

VRV system air conditioner

FXNA20A2VEB

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Table of contents

Installer and user reference guide

FXNA-A

VRV system air conditioner

4P785124-1 – 2024.09

Table of contents

1 About the documentation 4

1.1 About this document...................................................................................................................................................... 4

2 General safety precautions 6

2.1 About the documentation.............................................................................................................................................. 6

2.1.1 Meaning of warnings and symbols................................................................................................................ 6

2.2 For the installer .............................................................................................................................................................. 7

2.2.1 General........................................................................................................................................................... 7

2.2.2 Installation site............................................................................................................................................... 8

2.2.3 Refrigerant — in case of R410A or R32......................................................................................................... 8

2.2.4 Electrical......................................................................................................................................................... 10

3 Specific installer safety instructions 13

3.1 Instructions for equipment using R32 refrigerant......................................................................................................... 15

3.1.1 Installation space requirements.................................................................................................................... 17

For the user 18

4 User safety instructions 19

4.1 General ........................................................................................................................................................................... 19

4.2 Instructions for safe operation ...................................................................................................................................... 20

5 About the system 25

5.1 System layout ................................................................................................................................................................. 25

5.2 Information requirements for fan coil units.................................................................................................................. 26

6 User interface 27

7 Before operation 28

8 Operation 29

8.1 Operation range ............................................................................................................................................................. 29

8.2 About operation modes ................................................................................................................................................. 29

8.2.1 Basic operation modes .................................................................................................................................. 29

8.2.2 Special heating operation modes.................................................................................................................. 30

8.3 To operate the system ................................................................................................................................................... 30

9 Energy saving and optimum operation 31

10 Maintenance and service 32

10.1 Precautions for maintenance and service ..................................................................................................................... 32

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 ........................................................................................................................... 34

10.5 About the refrigerant ..................................................................................................................................................... 34

10.5.1 About the refrigerant leakage sensor ........................................................................................................... 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) ................................................................. 39

11.1.7 Symptom: Dust comes out of the unit .......................................................................................................... 39

11.1.8 Symptom: The units can give off odours....................................................................................................... 39

12 Relocation 40

13 Disposal 41

For the installer 42