Table of contents
Installer and user reference guide
2
EKVDX32~100A2VEB
VRV system air conditioner
4P664010-1A – 2022.05
Table of contents
1 About the documentation 5
1.1 About this document ...................................................................................................................................................... 5
2 General safety precautions 7
2.1 About the documentation .............................................................................................................................................. 7
2.1.1 Meaning of warnings and symbols ................................................................................................................ 7
2.2 For the installer............................................................................................................................................................... 8
2.2.1 General ........................................................................................................................................................... 8
2.2.2 Installation site ............................................................................................................................................... 9
2.2.3 Refrigerant — in case of R410A or R32.......................................................................................................... 9
2.2.4 Electrical ......................................................................................................................................................... 11
3 Specific installer safety instructions 14
3.1 Instructions for equipment using R32 refrigerant ......................................................................................................... 17
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 Compatibility with VAM models..................................................................................................................................... 28
6 User interface 29
7 Operation 30
7.1 Before operation............................................................................................................................................................. 30
7.2 Operation range.............................................................................................................................................................. 30
7.3 About operation modes.................................................................................................................................................. 31
7.3.1 Basic operation modes................................................................................................................................... 31
7.3.2 Special heating operation modes................................................................................................................... 32
7.4 To operate the system.................................................................................................................................................... 32
8 Energy saving and optimum operation 33
9 Maintenance and service 34
9.1 Cleaning the air outlet .................................................................................................................................................... 34
9.1.1 To clean the air outlet .................................................................................................................................... 34
9.2 Maintenance before a long stop period......................................................................................................................... 34
9.3 Maintenance after a long stop period............................................................................................................................ 34
9.4 About the refrigerant...................................................................................................................................................... 34
9.4.1 About R32 refrigerant leakage safety ............................................................................................................ 35
10 Troubleshooting 37
10.1 Symptoms that are NOT system malfunctions............................................................................................................... 38
10.1.1 Symptom: The system does not operate....................................................................................................... 38
10.1.2 Symptom: White mist comes out of a unit (Indoor unit) .............................................................................. 39
10.1.3 Symptom: White mist comes out of a unit (Indoor unit, outdoor unit)........................................................ 39
10.1.4 Symptom: The user interface reads "U4" or "U5" and stops, but then restarts after a few minutes.......... 39
10.1.5 Symptom: Noise of air conditioners (Indoor unit)......................................................................................... 39
10.1.6 Symptom: Noise of air conditioners (Indoor unit, outdoor unit) .................................................................. 39
10.1.7 Symptom: Dust comes out of the unit........................................................................................................... 40
10.1.8 Symptom: The units can give off odours ....................................................................................................... 40
11 Relocation 41
12 Disposal 42
For the installer 43
13 About the box 44
13.1 Overview: About the box ................................................................................................................................................ 44
13.2 Indoor unit ...................................................................................................................................................................... 44
