1.1Meaning of warnings and symbols.................................................................................................................................5
2.2Instructions for safe operation .......................................................................................................................................8
3 About the system10
3.1Components in a typical system layout.......................................................................................................................... 10
4.3Domestic hot water ........................................................................................................................................................ 14
5.3.2Main menu screen.......................................................................................................................................... 22
5.3.4Detailed screen with values ........................................................................................................................... 24
5.4Turning operation ON or OFF ......................................................................................................................................... 24
5.4.2To turn ON or OFF .......................................................................................................................................... 25
5.5Reading out information................................................................................................................................................. 26
5.6.1About space heating/cooling control............................................................................................................. 26
5.6.2Setting the space operation mode................................................................................................................. 26
5.6.3Determining which temperature control you are using ................................................................................ 28
5.6.4To change the desired room temperature .................................................................................................... 28
5.6.5To change the desired leaving water temperature ....................................................................................... 29
5.7Domestic hot water control............................................................................................................................................ 30
5.7.1About domestic hot water control................................................................................................................. 30
5.8Preset values and schedules........................................................................................................................................... 34
5.8.2Using and programming schedules................................................................................................................ 35
5.8.4Setting the energy prices................................................................................................................................ 42
5.10.1To configure time and date ............................................................................................................................ 49
7.1Overview: Maintenance and service .............................................................................................................................. 56
8 Troubleshooting57
8.1To display the help text in case of a malfunction........................................................................................................... 57
8.2To check the malfunction history ................................................................................................................................... 57
8.3Symptom: You are feeling too cold (hot) in your living room........................................................................................ 58
8.4Symptom: The water at the tap is too cold.................................................................................................................... 58
12.2Settings menu ................................................................................................................................................................. 65
Latest revisions of the supplied documentation may be available on the regional
Daikin website or via your installer.
The original documentation is written in English. All other languages are
translations.
ETVH/X16S(U)18+23EA6V+9W + ETBH/X16EF6V+9W
Daikin Altherma 3 H HT F+W
4P644740-1 – 2021.02
1 | About this document
4
Space heating/cooling
Operation range
4.3
Daikin Residential Controller app
If set up by your installer, you can use the Daikin
Residential Controller app to control and monitor the
status of your system. For more information, see:
http://www.onlinecontroller.daikineurope.com/
Breadcrumbs
Breadcrumbs (example: [4.3]) help you to locate where you are in the menu
structure of the user interface.
1To enable the breadcrumbs: In the home screen or main menu
screen, press the help button. The breadcrumbs appear in the
top left corner of the screen.
2To disable the breadcrumbs: Press the help button again.
This document also mentions these breadcrumbs. Example:
1Go to [4.3]: Space heating/cooling > Operation
range.
This means:
1Starting from the home screen, turn the left dial and go to
Indicates a situation that results in death or serious injury.
DANGER: RISK OF ELECTROCUTION
Indicates a situation that could result in electrocution.
User reference guide
5
1 | About this document
DANGER: RISK OF BURNING/SCALDING
Indicates a situation that could result in burning/scalding because of extreme hot or
cold temperatures.
DANGER: RISK OF EXPLOSION
Indicates a situation that could result in explosion.
WARNING
Indicates a situation that could result in death or serious injury.
WARNING: FLAMMABLE MATERIAL
CAUTION
Indicates a situation that could result in minor or moderate injury.
NOTICE
Indicates a situation that could result in equipment or property damage.
INFORMATION
Indicates useful tips or additional information.
Symbols used on the unit:
SymbolExplanation
Before installation, read the installation and operation
manual, and the wiring instruction sheet.
Before performing maintenance and service tasks, read the
service manual.
For more information, see the installer and user reference
guide.
The unit contains rotating parts. Be careful when servicing or
inspecting the unit.
Symbols used in the documentation:
SymbolExplanation
Indicates a figure title or a reference to it.
Example: " 1–3 Figure title" means "Figure 3 in chapter 1".
Indicates a table title or a reference to it.
User reference guide
6
Example: " 1–3 Table title" means "Table 3 in chapter 1".
ETVH/X16S(U)18+23EA6V+9W + ETBH/X16EF6V+9W
Daikin Altherma 3 H HT F+W
4P644740-1 – 2021.02
2 User safety instructions
Always observe the following safety instructions and regulations.
2.1 General
WARNING
If you are NOT sure how to operate the unit, contact your
installer.
WARNING
This appliance can be used by children aged from 8 years
and above and persons with reduced physical, sensory or
mental capabilities or lack of experience and knowledge if
they have been given supervision or instruction concerning
use of the appliance in a safe way and understand the
hazards involved.
2 | User safety instructions
Children SHALL NOT play with the appliance.
Cleaning and user maintenance SHALL NOT be made by
children without supervision.
WARNING
To prevent electrical shocks or fire:
▪ Do NOT rinse the unit.
▪ Do NOT operate the unit with wet hands.
▪ Do NOT place any objects containing water on the unit.
CAUTION
▪ Do NOT place any objects or equipment on top of the
This means that electrical and electronic products may NOT be mixed with
unsorted household waste. Do NOT try to dismantle the system yourself: the
dismantling of the system, treatment of the refrigerant, of oil and of other parts
MUST be done by an authorised installer and MUST comply with applicable
legislation.
Units MUST be treated at a specialised treatment facility for reuse, recycling and
recovery. By ensuring this product is disposed of correctly, you will help to
prevent potential negative consequences for the environment and human
health. For more information, contact your installer or local authority.
This means that the batteries may NOT be mixed with unsorted household
waste. If a chemical symbol is printed beneath the symbol, this chemical symbol
means that the battery contains a heavy metal above a certain concentration.
Possible chemical symbols are: Pb: lead (>0.004%).
Waste batteries MUST be treated at a specialised treatment facility for reuse. By
ensuring waste batteries are disposed of correctly, you will help to prevent
potential negative consequences for the environment and human health.
2.2 Instructions for safe operation
WARNING: MILDLY FLAMMABLE MATERIAL
The refrigerant inside this unit is mildly flammable.
WARNING
The appliance shall be stored so as to prevent mechanical
damage and in a well-ventilated room without
continuously operating ignition sources (example: open
flames, an operating gas appliance or an operating electric
heater).
User reference guide
8
WARNING
▪ Do NOT pierce or burn refrigerant cycle parts.
▪ Do NOT use cleaning materials or means to accelerate
the defrosting process other than those recommended
by the manufacturer.
▪ Be aware that the refrigerant inside the system is
odourless.
ETVH/X16S(U)18+23EA6V+9W + ETBH/X16EF6V+9W
Daikin Altherma 3 H HT F+W
4P644740-1 – 2021.02
2 | User safety instructions
WARNING
The refrigerant inside the unit is mildly flammable, but
normally does NOT leak. If the refrigerant leaks in the
room and comes in contact with fire from a burner, a
heater, or a cooker, this may result in fire, or the formation
of a harmful gas.
Turn off any combustible heating devices, ventilate the
room, and contact the dealer where you purchased the
unit.
Do NOT use the unit until a service person confirms that
the part from which the refrigerant leaked has been
repaired.
WARNING
Air purging heat emitters or collectors. Before you purge
air from heat emitters or collectors, check if or is
displayed on the home screen of the user interface.
▪ If not, you can purge air immediately.
▪ If yes, make sure that the room where you want to
purge air is sufficiently ventilated. Reason: Refrigerant
might leak into the water circuit, and subsequently into
the room when you purge air from the heat emitters or
collectors.
Room frost protection. Even if you turn OFF space heating/cooling operation ([C.2]:
Operation > Space heating/cooling), room frost protection operation –if
enabled– can still activate. However, for leaving water temperature control and
external room thermostat control, the protection is NOT guaranteed.
User reference guide
11
4 | Quick guide
Operation
Space heating/cooling
Tank
Off
On
C.2
Room
1
+
–
21°C
1
ab
Room
Main zone
2
Additional zone
3
NOTICE
Water pipe freeze prevention. Even if you turn OFF space heating/cooling operation
([C.2]: Operation > Space heating/cooling), water pipe freeze prevention –if
enabled– will remain active.
1Go to [C.2]: Operation > Space heating/cooling.
2Set operation to On or Off.
To change the desired room temperature
During room temperature control, you can use the room temperature setpoint
screen to read out and adjust the desired room temperature.
1Go to [1]: Room.
2Adjust the desired room temperature.
a Actual room temperature
b Desired room temperature
To change the desired leaving water temperature
You can use the leaving water temperature setpoint screen to read out and adjust
the desired leaving water temperature.
1Go to [2]: Main zone or [3]: Additional zone.
User reference guide
12
ETVH/X16S(U)18+23EA6V+9W + ETBH/X16EF6V+9W
Daikin Altherma 3 H HT F+W
4P644740-1 – 2021.02
4 | Quick guide
+
–
35°C
2
ab
Main zone
+
–
45°C
3
ab
Additional zone
X1X2
c
d
Y1
Y2
Y3
Y4
ab
Y1
Y2
Y3
Y4
X1X2
ab
c
d
2Adjust the desired leaving water temperature.
a Actual leaving water temperature
b Desired leaving water temperature
To change the weather-dependent curve for the space heating/cooling zones
1Go to the applicable zone:
ZoneGo to …
Main zone – Heating[2.5] Main zone > Heating WD
curve
Main zone – Cooling[2.6] Main zone > Cooling WD
curve
Additional zone – Heating[3.5] Additional zone > Heating
WD curve
Additional zone – Cooling[3.6] Additional zone > Cooling
WD curve
2Change the weather-dependent curve.
There are 2 types of WD curves: slope-offset curve (default), and 2-points
curve. If needed, you can change the type in [2.E] Main zone > WD curve
type. The way to adjust the curve depends on the type.
Slope-offset curve
Slope. When slope is changed, the new
preferred temperature at X1 is
unequally higher than the preferred
temperature at X2.
Offset. When offset is changed, the new
preferred temperature at X1 is equally
higher as the preferred temperature at
X2.
X1, X2 Outdoor ambient temperature
Y1~Y4 Desired leaving water temperature
▪ Reversible models
▪ Heating only models + conversion kit
The user interface has the following components:
a Status indicator
b LCD screen
c Dials and buttons
a Status indicator
b LCD screen
c Dials and buttons
Status indicator
The LEDs of the status indicator light up or blink to show the operating mode of the
unit.
LEDModeDescription
Blinking blueStandbyThe unit is not in operation.
Continuous blueOperationThe unit is in operation.
Blinking redMalfunctionA malfunction occurred.
See "8.1To display the help text in case
of a malfunction"[457] for more
information.
LCD screen
The LCD screen has a sleeping function. After 15 min of non-interaction with the
user interface, the screen darkens. Pressing any button or rotating any dial
awakens the display.
Dials and buttons
User reference guide
16
You use the dials and buttons:
ETVH/X16S(U)18+23EA6V+9W + ETBH/X16EF6V+9W
Daikin Altherma 3 H HT F+W
4P644740-1 – 2021.02
5 | Operation
abcde
▪ To navigate through the screens, menus and settings of the LCD screen
▪ To set values
ItemDescription
aLeft dialThe LCD shows an arc on the left side of the display when
you can use the left dial.
▪: Turn, then press the left dial. Navigate through the
menu structure.
▪: Turn the left dial. Choose a menu item.
▪: Press the left dial. Confirm your choice or go to a
submenu.
bBack button: Press to go back 1 step in the menu structure.
cHome button: Press to go back to the home screen.
dHelp button: Press to show a help text related to the current page (if
available).
eRight dialThe LCD shows an arc on the right side of the display when
you can use the right dial.
▪: Turn, then press the right dial. Change a value or
setting, shown at the right side of the screen.
▪: Turn the right dial. Navigate through the possible
values and settings.
▪: Press the right dial. Confirm your choice and go to