Table of contents
User reference guide
2
ETVH/X12S(U)18+23E + ETBH/X12E
Daikin Altherma 3 H MT F+W
4P634888-1A – 2022.08
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 Space heating/cooling..................................................................................................................................................... 11
4.3 Domestic hot water ........................................................................................................................................................ 15
5 Operation 17
5.1 User interface: Overview ................................................................................................................................................ 17
5.2 Menu structure: Overview user settings........................................................................................................................ 19
5.3 Possible screens: Overview............................................................................................................................................. 20
5.3.1 Home screen................................................................................................................................................... 20
5.3.2 Main menu screen.......................................................................................................................................... 23
5.3.3 Setpoint screen............................................................................................................................................... 24
5.3.4 Detailed screen with values ........................................................................................................................... 25
5.4 Turning operation ON or OFF ......................................................................................................................................... 25
5.4.1 Visual indication.............................................................................................................................................. 25
5.4.2 To turn ON or OFF .......................................................................................................................................... 26
5.5 Reading out information................................................................................................................................................. 27
5.6 Space heating/cooling control........................................................................................................................................ 27
5.6.1 About space heating/cooling control............................................................................................................. 27
5.6.2 Setting the space operation mode................................................................................................................. 27
5.6.3 Determining which temperature control you are using................................................................................ 29
5.6.4 To change the desired room temperature .................................................................................................... 29
5.6.5 To change the desired leaving water temperature ....................................................................................... 30
5.7 Domestic hot water control............................................................................................................................................ 31
5.7.1 About domestic hot water control................................................................................................................. 31
5.7.2 Reheat mode .................................................................................................................................................. 32
5.7.3 Scheduled mode............................................................................................................................................. 33
5.7.4 Scheduled + reheat mode .............................................................................................................................. 34
5.7.5 To change the domestic hot water temperature .......................................................................................... 34
5.7.6 Using DHW powerful operation..................................................................................................................... 35
5.8 Preset values and schedules........................................................................................................................................... 35
5.8.1 Using preset values......................................................................................................................................... 35
5.8.2 Using and programming schedules................................................................................................................ 36
5.8.3 Schedule screen: Example.............................................................................................................................. 39
5.8.4 Setting the energy prices................................................................................................................................ 43
5.9 Weather-dependent curve ............................................................................................................................................. 45
5.9.1 What is a weather-dependent curve? ........................................................................................................... 45
5.9.2 2-points curve................................................................................................................................................. 46
5.9.3 Slope-offset curve........................................................................................................................................... 47
5.9.4 Using weather-dependent curves.................................................................................................................. 48
5.10 Other functionalities....................................................................................................................................................... 50
5.10.1 To configure time and date ............................................................................................................................ 50
5.10.2 Using quiet mode ........................................................................................................................................... 51
5.10.3 Using holiday mode ........................................................................................................................................ 51
5.10.4 Using WLAN .................................................................................................................................................... 52
6 Energy saving tips 55
7 Maintenance and service 56
7.1 Overview: Maintenance and service .............................................................................................................................. 56
8 Troubleshooting 57
8.1 To display the help text in case of a malfunction........................................................................................................... 57
8.2 To check the malfunction history ................................................................................................................................... 57
8.3 Symptom: You are feeling too cold (hot) in your living room........................................................................................ 58
8.4 Symptom: The water at the tap is too cold.................................................................................................................... 58
8.5 Symptom: Heat pump failure ......................................................................................................................................... 59
