Operation manual
Daikin Altherma – Low temperature split
EHVZ04S18DA6V(G)
EHVZ08S18DA6V(G)
EHVZ08S23DA6V(G)
EHVZ08S18DA9W(G)
EHVZ08S23DA9W(G)
Operation manual
Daikin Altherma – Low temperature split
English
Table of Contents
▪ General safety precautions:
Table of Contents
▪ Safety instructions that you must read before operating your
system
1 About this document
2
2 About the system
2
2.1
Components in a typical system layout .....................................
3 Operation
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3
3
User interface: Overview ...........................................................
Possible screens: Overview ......................................................
3
3.2.1
Home screen............................................................... 4
3.2.2
Main menu screen ...................................................... 4
3.2.3
Setpoint screen ........................................................... 5
Detailed screen with values ........................................ 5
3.2.4
Space heating control................................................................
5
3.3.1
Setting the space operation mode .............................. 5
3.3.2
To change the desired room temperature................... 5
To change the desired leaving water temperature...... 5
3.3.3
Domestic hot water control........................................................
5
Reheat mode .............................................................. 5
3.4.1
3.4.2
Scheduled mode ......................................................... 5
Scheduled + reheat mode........................................... 6
3.4.3
3.4.4
Using DHW powerful operation................................... 6
Advanced usage........................................................................
6
3.5.1
To change the user permission level .......................... 6
6
Schedule screen: Example........................................................
Menu structure: Overview user settings ....................................
9
Installer settings: Tables to be filled in by installer .................... 10
Configuration wizard ................................................... 10
3.8.1
3.8.2
Settings menu ............................................................. 10
10
5 Maintenance and service
10
Overview: Maintenance and service ......................................... 10
To find the contact/helpdesk number ........................................ 11
6 Troubleshooting
6.1
6.2
6.3
6.4
To display the help text in case of a malfunction.......................
Symptom: You are feeling too cold (hot) in your living room.....
Symptom: The water at the tap is too cold ................................
Symptom: Heat pump failure.....................................................
▪ Quick guide for basic usage
3
4 Energy saving tips
5.1
5.2
▪ Format: Paper (in the box of the indoor unit)
▪ Operation manual:
11
▪ Format: Paper (in the box of the indoor unit)
▪ User reference guide:
▪ Detailed step-by-step instructions and background information
for basic and advanced usage
▪ Format: Digital files on http://www.daikineurope.com/supportand-manuals/product-information/
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.
Breadcrumbs
Breadcrumbs (example: [4.3]) help you to locate where you are in
the menu structure of the user interface.
1 To enable the breadcrumbs: In the home screen or
main menu screen, press the help button. The
breadcrumbs will appear in the top left corner of the
screen.
2 To disable the breadcrumbs: Press the help button
again.
This document also mentions these breadcrumbs. Example:
1 Go to [4.3]: Space heating/cooling > Operation
range.
This means:
1 Starting from the home screen, turn the left dial and
go to Space heating/cooling.
4
11
11
11
11
7 Disposal
11
8 Glossary
12
Space heating/cooling
2 Press the left dial to enter the submenu.
3 Turn the left dial and go to Operation range.
1
4.3
About this document
Thank you for purchasing this product. Please:
Operation range
▪ Read the documentation carefully before operating the user
interface to ensure the best possible performance.
▪ Request the installer to inform you about the settings that he used
to configure your system. Check if he has filled in the installer
settings tables. If not, request him to do so.
4 Press the left dial to enter the submenu.
▪ Keep the documentation for future reference.
Target audience
2
End users
Depending on the system layout, the system can:
Documentation set
▪ Heat up a space
This document is part of a documentation set. The complete set
consists of:
▪ Produce domestic hot water
Operation manual
2
About the system
EHVZ04+08S18+23DA
Daikin Altherma – Low temperature split
4P495247-1B – 2017.12
3 Operation
2.1
Components in a typical system
layout
g
C
a
B
▪ To set values
A
e
d
b
▪ To navigate through the screens, menus and settings of the LCD
screen
c
f
a
A
B
C
a
b
c
d
e
f
g
Main zone. Example: Living room.
Additional zone. Example: Bedroom.
Technical room. Example: Garage.
Outdoor unit heat pump
Indoor unit heat pump
Domestic hot water (DHW) tank
User interface at the indoor unit
User interface used as room thermostat
Underfloor heating
Radiators, heat pump convectors, or fan coil units
3
Operation
3.1
User interface: Overview
b
d
Item
e
Description
The LCD shows an arc on the left side of the
display when you can use the left dial.
a 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.
b Back button
: Press to go back 1 step in the menu structure.
c Home
button
: Press to go back to the home screen.
d Help button
: Press to show a help text related to the current
page (if available).
e Right dial
The LCD shows an arc on the right side of the
display when you can use the right dial.
The user interface has the following components:
a
b
c
c
▪
: Turn, then press the right dial. Change
a value or setting, shown at the right side of the
screen.
a
▪
b
c
: Turn the right dial. Navigate through
the possible values and settings.
▪
: Press the right dial. Confirm your
choice and go to the next menu item.
Status indicator
LCD screen
Dials and buttons
3.2
Possible screens: Overview
The most common screens are as follows:
Status indicator
The LEDs of the status indicator light up or blink to show the
operating mode of the unit.
LED
Blinking blue
Mode
Standby
Description
The unit is not in operation.
Continuous blue Operation
The unit is in operation.
Blinking red
A malfunction occurred.
Malfunction
a
b
See "6.1 To display the help text
in case of a malfunction" on
page 11 for more information.
c
LCD screen
The LCD screen has a sleeping function. After a certain time of noninteraction with the user interface, the screen darkens. Pressing any
button or rotating any dial awakens the display. The time of noninteraction differs depending on the user permission level:
▪ User or Advanced user: 15 min
▪ Installer: 1 h
Dials and buttons
You use the dials and buttons:
EHVZ04+08S18+23DA
Daikin Altherma – Low temperature split
4P495247-1B – 2017.12
+
–
c1
a
b
c
c2
Home screen
Main menu screen
Lower level screens:
c1: Setpoint screen
c2: Detailed screen with values
Operation manual
3
3 Operation
3.2.1
Home screen
Item
Press the
button to go back to the home screen. You see an
overview of the unit configuration and the room and setpoint
temperatures. Only symbols applicable for your configuration are
visible on the home screen.
18 Feb 2018
22:19
j
i
h
h1 Heat emitter type:
h3
h1 h2
▪
: Underfloor heating
▪
: Fancoil unit
▪
: Radiator
e
h2 Leaving water temperature setpoint
55
d
h3 Room thermostat type:
18
c
b
21
g
f
Description
Additional
zone
6
1.6
bar
▪ Hidden: Leaving water temperature control
a
45
: External control
▪
i1
Domestic
hot water
i1
Possible actions on this screen
: Domestic hot water
i2 Measured tank temperature
i2
Malfunction
j
Go through the list of the main menu.
or
: A malfunction occurred
See "6.1 To display the help text in case of a
malfunction" on page 11 for more information.
Go to the main menu screen.
Enable/disable breadcrumbs.
3.2.2
Item
Description
21 21
The temperatures are shown in circles. If the circle
is grey, the corresponding operation (example:
space heating) is currently not active.
Outdoor
unit
a2 a3
a1
a1
In the home screen, press
to open the main menu screen.
From the main menu, you can access the different setpoint screens
and submenus.
: Outdoor unit
a2
: Quiet mode active
a3 Measured ambient temperature
Indoor unit / b1 Indoor unit:
domestic
hot water
tank
: Floor-standing
▪
integrated tank
b2
b2 Water pressure
b1
Space
operation
mode
c
Disinfection
/ Powerful
d ▪
Date / time
e Current date and time
Holiday
f
Possible actions on this screen
indoor
unit
Go through the list.
with
: Heating
▪
Main zone
Main menu screen
Enter the submenu.
Enable/disable breadcrumbs.
Item
or
Malfunctioning
: Powerful operation active
Room
: Holiday mode active
g3 g4
▪
: Underfloor heating
g1 g2
▪
: Fancoil unit
▪
: Radiator
g2 Leaving water temperature setpoint
▪
Main zone
▪ Hidden: Leaving water temperature control
Shows the applicable symbol for your main
zone emitter type.
Set the leaving water temperature for the
main zone.
Additional zone
: Daikin user interface used as room
thermostat
: External control
Restriction: Only displayed if a room
thermostat is connected to the indoor unit.
Set the room temperature.
g3 Room thermostat type:
▪
Restriction: Only displayed if a malfunction
occurs.
See "6.1 To display the help text in case of
a malfunction" on page 11 for more
information.
: Disinfection mode active
g1 Heat emitter type:
Description
Restriction: Only displayed if there are two
leaving water temperature zones. Shows
the applicable symbol for your additional
zone emitter type.
Set the leaving water temperature for the
additional zone (if present).
Space heating/
cooling
g4 Measured room temperature
Tank
Shows the applicable symbol for your unit.
You cannot change the operation mode on
heating only models.
Restriction: Only displayed if a domestic
hot water tank is present.
Set the domestic hot water tank
temperature.
Operation manual
4
EHVZ04+08S18+23DA
Daikin Altherma – Low temperature split
4P495247-1B – 2017.12
3 Operation
Item
User settings
Information
Displays data and information about the
indoor unit.
Installer settings
Restriction: Only for the installer.
Gives access to advanced settings.
Commissioning
Confirm changes and proceed.
3.3
Space heating control
3.3.1
Setting the space operation mode
Restriction: Only for the installer.
About space operation modes
Perform tests and maintenance.
This unit is a heating only model. The system can heat up a space,
but NOT cool down a space.
User profile
Change the active user profile.
Operation
Turn heating functionality and domestic hot
water preparation on or off.
Setpoint screen
3.2.3
Possible actions on this screen
Description
Gives access to user settings such as
holiday mode and quiet mode.
The setpoint screen is displayed for screens describing system
components that need a setpoint value.
Example:
3.3.2
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.
1 Go to [1]: Room.
You can read out the desired and actual room
temperature in the center of the setpoint screen.
2 Adjust the desired room temperature.
▪ Room temperature screen
▪ Main zone screen
To change the desired leaving water
temperature
3.3.3
▪ Additional zone screen
▪ Tank temperature screen
a2
e
c
d
b2
d
e
a1
b1
INFORMATION
The leaving water is the water that is sent to the heat
emitters. The desired leaving water temperature is set by
your installer in accordance with the heat emitter type.
Only adjust the leaving water temperature settings in case
of problems.
+
d
–
Possible actions on this screen
Go through the list of the submenu.
Go to the submenu.
Adjust and automatically apply the desired
temperature.
You can use the leaving water temperature setpoint screen to read
out and adjust the desired leaving water temperature.
1 Go to [2]: Main zone or [3]: Additional zone.
You can read out the desired and actual leaving
water temperature in the center of the setpoint
screen.
2 Adjust the desired leaving water temperature.
Item
Description
Minimum temperature limit
Maximum temperature limit
a1
Fixed by the unit
a2
Restricted by the installer
b1
Fixed by the unit
b2
Restricted by the installer
Current temperature
c
Measured by the unit
Desired temperature
d
Turn the right dial to
increase/decrease.
Submenu
e
Turn or press the left dial to
go to the submenu.
3.2.4
Detailed screen with values
3.4
Domestic hot water control
3.4.1
Reheat mode
In reheat mode the DHW tank continuously heats up to the
temperature shown on the home screen (example: 50°C).
Tt
1
60°C
50°C
40°C
3
2
4
15°C
a
b
a
b
Settings
Values
Possible actions on this screen
Go through the list of settings.
3.4.2
00:00
07:00
Tt
t
DHW tank temperature
Time
14:00
21:00
t
Scheduled mode
In scheduled mode the DHW tank produces hot water corresponding
to a schedule. The best time to allow the tank to produce hot water is
at night, because the space heating demand is lower.
Example:
Change the value.
Go to the next setting.
EHVZ04+08S18+23DA
Daikin Altherma – Low temperature split
4P495247-1B – 2017.12
Operation manual
5
3 Operation
Tt
1
60°C
50°C
40°C
2
3.5
4
3
Advanced usage
The amount of information you can read out in the menu structure
depends on your user permission level:
5
▪ User: Standard mode
▪ Advanced user: You can read out more information
15°C
3.4.3
00:00
07:00
Tt
t
DHW tank temperature
Time
14:00
t
21:00
To change the user permission level
3.5.1
You can change the user permission level as follows:
1 Go to [B]: User profile.
2 Enter the applicable code for the user permission.
Scheduled + reheat mode
—
▪ Move the cursor from left to right.
In scheduled + reheat mode, the domestic hot water control is the
same as in scheduled mode. However, when the DHW tank
temperature drops below a preset value (=reheat tank temperature –
hysteresis value; example: 35°C), the DHW tank heats up until it
reaches the reheat set point (example: 45°C). This ensures that a
minimum amount of hot water is available at all times.
User pin code
Example:
The User pin code is 0000.
Tt
1
60°C
50°C
45°C
35°C
▪ Browse through the list of digits and change the
selected digit.
▪ Confirm the pincode and proceed.
Advanced user pin code
2
3
4
The Advanced user pin code is 1234. Additional menu items for the
user are now visible.
5
3.6
15°C
Schedule screen: Example
This example shows how to set a room temperature schedule in
heating mode for the main zone.
00:00
07:00
Tt
t
DHW tank temperature
Time
14:00
21:00
t
INFORMATION
The procedures to program other schedules are similar.
To program the schedule
3.4.4
Using DHW powerful operation
Example: You want to program the following schedule:
User defined 1
About powerful operation
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Powerful operation allows the domestic hot water to be heated by
the backup heater. Use this mode on days when there is more hot
water usage than usual.
To check if powerful operation is active
If
is displayed on the home screen, powerful operation is active.
Activate or deactivate Powerful operation as follows:
Prerequisite: The room temperature schedule is only available if
room thermostat control is active. If leaving water temperature
control is active, you can program the main zone schedule instead.
1 Go to [5.1]: Tank > Powerful operation
1
Go to the schedule.
2 Turn powerful operation Off or On.
2
Clear the contents of the schedule (optional).
Usage example: You immediately need more hot water
3
Program the schedule for Monday.
You are in the following situation:
4
Copy the schedule to the other weekdays.
▪ You already consumed most of your domestic hot water.
5
Program the schedule for Saturday and copy it to Sunday.
▪ You cannot wait for the next scheduled action to heat up the
domestic hot water tank.
6
Give the schedule a name.
Then you can activate powerful operation. The domestic hot water
tank will start heating up the water to the Comfort temperature.
To go to the schedule:
1 Go to [1.1]: Room > Schedule.
2 Set scheduling to Yes.
INFORMATION
3 Go to [1.2]: Room > Heating schedule.
When powerful operation is active, the risk of space
heating and capacity shortage comfort problems is
significant. In case of frequent domestic hot water
operation, frequent and long space heating interruptions
will happen.
Operation manual
6
EHVZ04+08S18+23DA
Daikin Altherma – Low temperature split
4P495247-1B – 2017.12
3 Operation
To clear the contents of the schedule:
3 Select Tuesday.
1 Select the name of the current schedule.
User defined 1
Mon
Tue
Wed
Thu
Fri
Sat
Sun
User defined 1
Mon
Tue
Wed
Thu
Fri
Sat
Sun
C
4 Select Paste.
2 Select Delete.
C
Copy
Paste
Delete
Edit
Result:
3 Select OK to confirm.
User defined 1
To program the schedule for Monday:
1 Select Monday.
User defined 1
Mon
Tue
Wed
Thu
Fri
Sat
Sun
C
Mon
Tue
Wed
Thu
Fri
Sat
Sun
5 Repeat this action for all other weekdays.
—
User defined 1
C
Mon
Tue
Wed
Thu
Fri
Sat
Sun
2 Select Edit.
Delete
To program the schedule for Saturday and copy it to Sunday:
Edit
Copy
1 Select Saturday.
2 Select Edit.
3 Use the left dial to select an entry and edit the entry
with the right dial. You can program up to 6 actions
each day.
0
12
6:00 20°C
8:30 18°C
24
Mon
22:00 18°C
--:--
3 Use the left dial to select an entry and edit the entry
with the right dial.
0
12
24
Sat
8:00 21°C
23:00 18°C
--:--
--
--
17:30 21°C
4 Confirm the changes.
4 Confirm the changes.
To copy the schedule to the other weekdays:
1 Select Monday.
5 Select Saturday.
6 Select Copy.
7 Select Sunday.
8 Select Paste.
User defined 1
Mon
Tue
Wed
Thu
Fri
Sat
Sun
2 Select Copy.
Edit
Copy
Result:
User defined 1
Mon
Tue
Wed
Thu
Fri
Sat
Sun
C
To rename the schedule:
INFORMATION
Not all schedules can be renamed.
Result: "C" is displayed next to the copied day.
EHVZ04+08S18+23DA
Daikin Altherma – Low temperature split
4P495247-1B – 2017.12
Operation manual
7
3 Operation
1 Select the name of the current schedule.
User defined 1
Mon
Tue
Wed
Thu
Fri
Sat
Sun
2 Select the Rename option.
Delete
Rename
3 Browse through the character list and confirm the
selected character.
4 Confirm the new name.
Operation manual
8
EHVZ04+08S18+23DA
Daikin Altherma – Low temperature split
4P495247-1B – 2017.12
3 Operation
3.7
Menu structure: Overview user settings
[1] Room
Schedule
Heating schedule
Antifrost
Setpoint range
Room sensor offset
[2] Main zone
[1.4] Antifrost
Activation
Room setpoint
[1.5] Setpoint range
Schedule
Heating schedule
Setpoint mode
Heating WD curve
[3] Additional zone
Schedule
Heating schedule
Setpoint mode
Heating WD curve
[4] Space heating/cooling
Operation mode
Heating minimum
Heating maximum
[7.2] Time/date
Hours
Minutes
Year
Month
Day
Daylight savings time
Format
[7.3] Holiday
[5] Tank
Powerful operation
Comfort setpoint
Eco setpoint
Reheat setpoint
Schedule
Activation
From
Till
[7.4] Quiet
Activation
Schedule
[7] User settings
Language
Time/date
Holiday
Quiet
Electricity price
Gas price
[7.5] Electricity price
High
Medium
Low
Schedule
[8] Information
Energy data
Malfunction history
Dealer information
Sensors
Actuators
Operation modes
About
Connection status
[8.1] Energy data
Electricity input
Produced heat
[B] User profile
[C] Operation
Room
Space heating/cooling
Tank
Setpoint screen
INFORMATION
Depending on the selected installer settings and unit type,
settings will be visible/invisible.
EHVZ04+08S18+23DA
Daikin Altherma – Low temperature split
4P495247-1B – 2017.12
Operation manual
9
4 Energy saving tips
3.8
3.8.1
Installer settings: Tables to be
filled in by installer
▪ Use a weekly schedule for your normal space heating needs. If
necessary, you can easily deviate from the schedule:
▪ For shorter periods: You can overrule the scheduled room
temperature until the next scheduled action. Example: When
you have a party, or when you are leaving for a couple of hours.
Configuration wizard
Setting
▪ For longer periods: You can use the holiday mode.
Fill in…
Tips about DHW tank temperature
System
▪ Use a weekly schedule for your normal domestic hot water needs
(only in scheduled mode).
Indoor unit type (read only)
Backup heater type [9.3.1]
▪ Program to heat up the DHW tank to a preset value (Storage
comfort = higher DHW tank temperature) during the night,
because then space heating demand is lower.
Domestic hot water [9.2.1]
Emergency [9.5]
Number of zones [4.4]
▪ If heating up the DHW tank once at night is not sufficient,
program to additionally heat up the DHW tank to a preset value
(Storage eco = lower DHW tank temperature) during the day.
Backup heater
Voltage [9.3.2]
Configuration [9.3.3]
▪ Make sure the desired DHW tank temperature is NOT too high.
Example: After installation, lower the DHW tank temperature daily
by 1°C and check if you still have enough hot water.
Capacity step 1 [9.3.4]
Additional capacity step 2 [9.3.5]
(if applicable)
▪ Program to turn ON the domestic hot water pump only during
periods of the day when instant hot water is necessary. Example:
In the morning and evening.
Main zone
Emitter type [2.7]
Control [2.9]
Setpoint mode [2.4]
Schedule [2.1]
Additional zone (only if [4.4] = 1)
Emitter type [3.7]
Control (read only) [3.9]
Maintenance and service
5.1
Overview: Maintenance and
service
The installer has to perform a yearly maintenance. You can find the
contact/helpdesk number via the user interface.
Setpoint mode [3.4]
Schedule [3.1]
As end user, you have to:
Tank
Heat up mode [5.6]
▪ Keep the area around the unit clean.
Comfort setpoint [5.2]
Eco setpoint [5.3]
▪ Keep the user interface clean with a soft damp cloth. Do NOT use
any detergents.
Reheat setpoint [5.4]
Refrigerant
3.8.2
This product contains fluorinated greenhouse gases. Do NOT vent
gases into the atmosphere.
Settings menu
Setting
Fill in…
Refrigerant type: R32
Global warming potential (GWP) value: 675
Main zone
Thermostat type [2.A]
Additional zone (if applicable)
Thermostat type [3.A]
Information
Dealer information [8.3]
4
5
Energy saving tips
NOTICE
In Europe, the greenhouse gas emissions of the total
refrigerant charge in the system (expressed as tonnes
CO2-equivalent) is used to determine the maintenance
intervals. Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000
Please contact your installer for more information.
Tips about room temperature
WARNING: FLAMMABLE MATERIAL
▪ Make sure the desired room temperature is NEVER too high, but
ALWAYS according to your actual needs. Each saved degree can
save up to 6% of heating costs.
The refrigerant inside this unit is mildly flammable.
▪ Do NOT increase the desired room temperature to speed up
space heating. The space will NOT heat up faster.
The appliance shall be stored in a room without
continuously operating ignition sources (example: open
flames, an operating gas appliance or an operating electric
heater).
▪ When your system layout contains slow heat emitters (example:
under floor heating), avoid large fluctuation of the desired room
temperature and do NOT let the room temperature drop too low. It
will take more time and energy to heat up the room again.
Operation manual
10
WARNING
EHVZ04+08S18+23DA
Daikin Altherma – Low temperature split
4P495247-1B – 2017.12
6 Troubleshooting
WARNING
Possible cause
▪ 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.
The desired room temperature
cannot be reached.
6.3
WARNING
Symptom: The water at the tap is
too cold
Possible cause
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.
You ran out of domestic hot
water because of unusual high
consumption.
The desired DHW tank
temperature is too low.
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.
5.2
Troubleshooting
6.1
To display the help text in case of
a malfunction
In case of a malfunction, the following will appear on the home
screen depending on the severity:
▪ Adjust
the
DHW tank
temperature
schedule.
Example:
Program
to
additionally heat up the
DHW tank to a preset value
(Eco setpoint = lower tank
temperature) during the day.
: Malfunction
You can get a short and a long description of the malfunction as
follows:
1 Press the left dial to open the main menu and go to
Malfunctioning.
Result: A short description of the error and the error
code is displayed on the screen.
2 Press
in the error screen.
Result: A long description of the error is displayed
on the screen.
6.2
6.4
Symptom: Heat pump failure
When the heat pump fails to operate, the backup heater can serve
as an emergency heater and either automatically or nonautomatically take over the heat load.
▪ When auto emergency is set to Automatic and a heat pump failure
occurs, the backup heater will automatically take over the heat
load and the domestic hot water production.
: Error
▪
If you can wait, overrule
(increase) the active or next
scheduled desired temperature
so that more hot water will be
produced exceptionally.
▪ Increase the DHW tank
temperature preset value.
To find the contact/helpdesk
number
6
Corrective action
If you immediately need domestic
hot water, activate the DHW tank
Powerful operation. However,
this consumes extra energy.
If the problems recurs daily, do
one of the following:
1 Go to [8.3]: Information > Dealer information.
▪
Corrective action
Increase the desired leaving
water temperature in accordance
with the heat emitter type.
▪ When auto emergency is set to Manual and a heat pump failure
occurs, the domestic hot water and space heating operation will
stop and need to be recovered manually via the user interface. To
recover operation manually, go to the Malfunctioning main menu
screen, where the user interface will then ask you to confirm
whether the backup heater can take over the heat load or not.
When the heat pump fails,
interface.
Possible cause
Heat pump is damaged.
Symptom: You are feeling too cold
(hot) in your living room
Possible cause
▪ Adjust the room temperature
schedule.
EHVZ04+08S18+23DA
Daikin Altherma – Low temperature split
4P495247-1B – 2017.12
Corrective action
See "6.1 To display the help text
in case of a malfunction" on
page 11.
When the backup heater takes over the heat load,
electricity consumption will be considerably higher.
The desired room temperature is Increase (decrease) the desired
too low (high).
room temperature.
▪ Increase (decrease) the room
temperature preset value.
will appear on the user
INFORMATION
Corrective action
If the problem recurs daily, do
one of the following:
or
7
Disposal
NOTICE
Do NOT try to dismantle the system yourself: the
dismantling of the system, treatment of the refrigerant, oil
and other parts MUST comply with applicable legislation.
Units MUST be treated at a specialised treatment facility
for reuse, recycling and recovery.
Operation manual
11
8 Glossary
8
Glossary
DHW = Domestic hot water
Hot water used, in any type of building, for domestic
purposes.
LWT = Leaving water temperature
Water temperature at the water outlet of the heat pump.
Operation manual
12
EHVZ04+08S18+23DA
Daikin Altherma – Low temperature split
4P495247-1B – 2017.12
Copyright 2017 Daikin
4P495247-1 B 00000002
4P495247-1B 2017.12