Table of contents
User reference guide
2
EKHWET90+(U)120B
R32 Split series – Domestic hot water tank
4P680076-1C – 2024.04
Table of contents
1 About this document 4
1.1 Meaning of warnings and symbols ................................................................................................................................ 5
2 User safety instructions 7
2.1 General ........................................................................................................................................................................... 7
2.2 Instructions for safe operation ...................................................................................................................................... 8
3 About the system 10
3.1 Components in a typical system layout ......................................................................................................................... 10
4 Quick guide 11
4.1 User permission level ..................................................................................................................................................... 11
4.2 Domestic hot water........................................................................................................................................................ 11
5 Operation 13
5.1 User interface: Overview ............................................................................................................................................... 13
5.2 Menu structure: Overview user settings ....................................................................................................................... 15
5.3 Possible screens: Overview ............................................................................................................................................ 16
5.3.1 Home screen.................................................................................................................................................. 16
5.3.2 Main menu screen ......................................................................................................................................... 17
5.3.3 Setpoint screen .............................................................................................................................................. 18
5.3.4 Detailed screen with values........................................................................................................................... 19
5.4 Turning operation ON or OFF......................................................................................................................................... 19
5.4.1 Visual indication............................................................................................................................................. 19
5.4.2 To turn ON or OFF.......................................................................................................................................... 20
5.5 Reading out information ................................................................................................................................................ 20
5.6 Domestic hot water control ........................................................................................................................................... 21
5.6.1 About domestic hot water control................................................................................................................ 21
5.6.2 Reheat mode.................................................................................................................................................. 22
5.6.3 Scheduled mode ............................................................................................................................................ 22
5.6.4 Scheduled + reheat mode ............................................................................................................................. 23
5.6.5 To change the domestic hot water temperature ......................................................................................... 23
5.6.6 Using DHW powerful operation .................................................................................................................... 24
5.7 Preset values and schedules .......................................................................................................................................... 25
5.7.1 Using preset values........................................................................................................................................ 25
5.7.2 Using and programming schedules ............................................................................................................... 25
5.7.3 Schedule screen: Example ............................................................................................................................. 27
5.8 Weather-dependent curve ............................................................................................................................................ 30
5.8.1 What is a weather-dependent curve?........................................................................................................... 30
5.8.2 2-points curve ................................................................................................................................................ 31
5.8.3 Slope-offset curve.......................................................................................................................................... 32
5.8.4 Using weather-dependent curves ................................................................................................................. 33
5.9 Priority schedule............................................................................................................................................................. 34
5.10 Operation mode ............................................................................................................................................................. 35
5.11 Other functionalities ...................................................................................................................................................... 36
5.11.1 To configure time and date ........................................................................................................................... 36
5.11.2 Using quiet mode........................................................................................................................................... 36
5.11.3 Using holiday mode ....................................................................................................................................... 37
5.11.4 Using WLAN ................................................................................................................................................... 38
6 Energy saving tips 40
7 Maintenance and service 41
7.1 Overview: Maintenance and service.............................................................................................................................. 41
8 Troubleshooting 43
8.1 To display the help text in case of a malfunction .......................................................................................................... 43
8.2 To check the malfunction history .................................................................................................................................. 43
8.3 Symptom: The water at the tap is too cold ................................................................................................................... 44
8.4 Symptom: Heat pump failure......................................................................................................................................... 44
9 Relocation 45
9.1 Overview: Relocation ..................................................................................................................................................... 45
10 Disposal 46
11 Glossary 47
