Daikin REYQ24U7Y1B Bedienungsanleitung

Daikin Klimaanlage REYQ24U7Y1B

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Installer and user reference guide

VRV IV+ heat recovery

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Table of contents

Installer and user reference guide

REYQ8~20+REMQ5U7Y1B

VRV IV+ heat recovery

4P561154-1B – 2021.02

Table of contents

1 About the documentation 6

1.1 About this document ...................................................................................................................................................... 6

1.2 Meaning of warnings and symbols................................................................................................................................. 6

2 General safety precautions 8

2.1 For the installer............................................................................................................................................................... 8

2.1.1 General ........................................................................................................................................................... 8

2.1.2 Installation site ............................................................................................................................................... 9

2.1.3 Refrigerant — in case of R410A or R32.......................................................................................................... 9

2.1.4 Electrical ......................................................................................................................................................... 11

3 Specific installer safety instructions 14

For the user 17

4 User safety instructions 18

4.1 General............................................................................................................................................................................ 18

4.2 Instructions for safe operation ....................................................................................................................................... 19

5 About the system 22

5.1 System layout.................................................................................................................................................................. 22

6 User interface 24

7 Before operation 25

8 Operation 26

8.1 Operation range.............................................................................................................................................................. 26

8.2 Operating the system ..................................................................................................................................................... 26

8.2.1 About operating the system........................................................................................................................... 26

8.2.2 About cooling, heating, fan only, and automatic operation ......................................................................... 27

8.2.3 About the heating operation.......................................................................................................................... 27

8.2.4 To operate the system (WITHOUT cool/heat changeover remote control switch)...................................... 28

8.2.5 To operate the system (WITH cool/heat changeover remote control switch)............................................. 28

8.3 Using the dry program.................................................................................................................................................... 29

8.3.1 About the dry program................................................................................................................................... 29

8.3.2 To use the dry program (WITHOUT cool/heat changeover remote control switch) .................................... 29

8.3.3 To use the dry program (WITH cool/heat changeover remote control switch) ........................................... 29

8.4 Adjusting the air flow direction ...................................................................................................................................... 30

8.4.1 About the air flow flap.................................................................................................................................... 30

8.5 Setting the master user interface................................................................................................................................... 31

8.5.1 About setting the master user interface........................................................................................................ 31

8.5.2 To designate the master user interface (VRV DX and Hydrobox) ................................................................. 32

8.6 About control systems .................................................................................................................................................... 32

9 Energy saving and optimum operation 33

9.1 Available main operation methods ................................................................................................................................ 33

9.2 Available comfort settings .............................................................................................................................................. 34

10 Maintenance and service 35

10.1 Maintenance after a long stop period............................................................................................................................ 35

10.2 Maintenance before a long stop period......................................................................................................................... 36

10.3 About the refrigerant...................................................................................................................................................... 36

10.4 After-sales service and warranty .................................................................................................................................... 36

10.4.1 Warranty period ............................................................................................................................................. 36

10.4.2 Recommended maintenance and inspection................................................................................................ 37

10.4.3 Recommended maintenance and inspection cycles ..................................................................................... 37

10.4.4 Shortened maintenance and replacement cycles ......................................................................................... 38

11 Troubleshooting 39

11.1 Error codes: Overview .................................................................................................................................................... 40

11.2 Symptoms that are NOT system malfunctions............................................................................................................... 43

11.2.1 Symptom: The system does not operate....................................................................................................... 43

11.2.2 Symptom: Cool/Heat cannot be changed over ............................................................................................. 43

11.2.3 Symptom: Fan operation is possible, but cooling and heating do not work ................................................ 43

11.2.4 Symptom: The fan speed does not correspond to the setting...................................................................... 43