IVT R1000 User manual

User Guide
R1000
menu
mode
i
6 721 831 636 (2021/03) en

Table of Contents
R1000 – 6 721 831 636 (2021/03) en
2
Table of Contents
1 Key to symbols and safety instructions . . . . . . . . . . . . . . . . . . . 3
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Panel overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Power switch (ON/OFF) . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Status lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Menu display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.5 Menu button and menu dial . . . . . . . . . . . . . . . . . . . . . . . 4
2.6 Return button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.7 Mode button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.8 Info button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Menu navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1 Initial menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2 Finding desired function and changing value . . . . . . . . . 4
3.3 Help information in the menu display . . . . . . . . . . . . . . . 5
4 Information from the heat pump . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1 Operating information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.2 Info button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.3 Operating symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Menu overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Settings Customer level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.1 Mode button functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.2 Room temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.3 Hot water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.4 Holiday . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.5 Energy measurements . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.6 Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.7 External control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.8 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.9 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.10 Access level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.11 Return to factory settings . . . . . . . . . . . . . . . . . . . . . . . 14
7 Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.1 Control unit and room sensor alarm lamp . . . . . . . . . . 14
7.2 Alarm buzzer at alarm . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.3 Acknowledgement of alarms . . . . . . . . . . . . . . . . . . . . 14
7.4 Alarm timer, alarm mode . . . . . . . . . . . . . . . . . . . . . . . 14
7.5 Alarm categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.6 Alarm window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.7 Alarm functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.8 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.9 Information log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Key to symbols and safety instructions
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1 Key to symbols and safety instructions
1.1 Key to symbols
Warnings
The following keywords are defined and can be used in this document:
•NOTICE indicates a situation that could result in damage to property
or equipment.
•CAUTION indicates a situation that could result in minor to medium
injury.
•WARNING indicates a situation that could result in severe injury or
death.
•DANGER indicates a situation that will result in severe injury or death.
Important information
Additional symbols
1.2 Safety instructions
General
▶ Read the guide carefully and keep it to hand for future use.
Installation and commissioning
▶ The heat pump may be installed and put into operation only by a
qualified installer.
Risk of damage due to operator error
Operator errors can result in personal injury and material damage.
▶ Ensure that children never operate this appliance unsupervised or
play with it.
▶ Ensure that only personnel who can operate this appliance correctly
have access to it.
Service and maintenance
▶ Only qualified personnel may carry out repairs. Incorrect repairs can
lead to serious risks to the user, and a reduction in savings.
▶ Only use original spare parts.
▶ Service and maintenance must be carried out annually by an
authorised service representative.
Safety of electrical devices for domestic use and
similar purposes
The following requirements apply in accordance with
EN 60335-1 in order to prevent hazards from
occurring when using electrical appliances:
“This appliance can be used by children of 8 years and
older, as well as by people with reduced physical,
sensory or mental capabilities or lacking in experience
and knowledge, if they are supervised and have been
given instruction in the safe use of the appliance and
understand the resulting dangers. Children shall not
play with the appliance. Cleaning and user
maintenance must not be performed by children
without supervision.”
“”If the power cable is damaged, it must be replaced
by the manufacturer, its customer service department
or a similarly qualified person, so that risks are
avoided”.
Warnings in this document are identified by a warning
triangle printed against a grey background.
Keywords at the start of a warning indicate the type and
seriousness of the ensuing risk if measures to prevent
the risk are not taken.
This symbol indicates important information where
there is no risk to people or property.
Symbol Explanation
▶ Step in an action sequence
Cross-reference to another part of the document
• List entry
– List entry (second level)
Table 1

Control panel
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2 Control panel
Settings for the control of the heat pump are made with the control unit's
control panel, which also provides information about current status.
2.1 Panel overview
Fig. 1 Control panel
[1] On/Off button
[2] Mode button
[3] Info button
[4] Menu dial
[5] Status lamp
[6] Return button
[7] Menu button
[8] Menu display
2.2 Power switch (ON/OFF)
Use the On/Off button to turn the heat pump on and off.
2.3 Status lamp
2.4 Menu display
Use the menu display in order to:
• See information from the heat pump.
• See available menus.
• Change set values.
2.5 Menu button and menu dial
Use to get from Initial menu to the menus. Use the menu dial in
order to:
• Navigate the menus and get to the setting displays.
– Turn the dial to see more menus on the same level or change a set
value.
– Press the dial to change to a lower menu level or save a change.
2.6 Return button
Use to:
• Go back to the previous menu level.
• Leave a setting display without changing the set value.
2.7 Mode button
Use to change type of operation.
• Change type of operation.
2.8 Info button
Use to see information from the control unit about operating
mode, temperature, program version, etc.
3 Menu navigation
3.1 Initial menu
Initial menu shows different temperatures, time, as well as current
operating symbols. The window displays information alternately Room
temperature (if room sensors exist) and Flow temperature for each
circuit installed.
Fig. 2 Initial menu
[1] Outdoor temperature
[2] Current operating symbols
[3] The circuit room temperature
[4] Current time
[5] Hot water temperature
[6] Circuit flow temperature
[7] Circuit number
Fig. 3 Initial menu, circuit 2 is displayed
3.2 Finding desired function and changing value
Menu overview (Page 7) shows the main functions that are reached
with and the dial.
The lamp lights green. The heat pump is running.
The lamp flashes red. There is an alarm which has not been
acknowledged.
The lamp lights red. The alarm has been acknowledged
but the alarm cause remains.
The lamp flashes slowly green,
menu window not lit.
The heat pump is in stand-by mode1).
1) Stand-by means that the heat pump is running but no heating or hot water
demand exists.
The lamp and menu display not
lit.
No voltage to the control unit.
Table 2 Lamp functions
menu
mode
i
6 720 641 855-08.1I
5
6
2
8
1
7
4
3
The controller language can be changed with the
button.
▶ Press the button in the initial menu for at least 5
s, then select the required language.
6 720 805 492-01.1I
7
6 720 805 492-02.1I

Menu navigation
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▶Press .
Fig. 4
▶ Turn the dial to mark a desired menu bar.
Fig. 5
▶ Select the function by pressing the dial. The first three menu functions
under Hot water are displayed.
Fig. 6
▶ Press the dial to select the function.
Fig. 7
▶ Turn the menu dial to change the set value.
Fig. 8
▶ Press the dial to save the value or use to return without
changing.
Fig. 9
The control unit automatically returns to the menu after the value has
been saved.
Fig. 10
3.3 Help information in the menu display
Fig. 11 Help information 1
[1] The menu level is Hot water
[2] Drop-down list. The marked row shows your position among the
functions under Hot water .
[3] The arrow shows that there is new menu on the next level.
[4] The points show that the next level is a setting window.
[5] The function is marked.
[6] Three of the functions under Hot water .
Fig. 12 Help information 2
[1] Graphic display of the value.
[2] Highest possible value.
[3] Unit.
[4] Previous value.
[5] New value. (Saved when the menu dial is pressed.)
[6] Lowest possible value
Fig. 13 Help information 3
[1] Option 4 out of 9 is displayed.
6 720 807 583-01.1I
6 720 807 583-02.1I
6 720 807 583-03.1I
6 720 807 583-04.1I
6 720 807 583-05.1I
6 720 807 583-06.1I
Economy and Comfort are explained in more detail in
the chapter about hot water mode (Chapter 6.3).
6 720 807 583-07.1I
6 720 807 583-08.1I
6
6 720 807 583-09.1I
6 720 807 583-10.1I

Information from the heat pump
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4 Information from the heat pump
The heat pump provides information about temperatures, operating
modes, possible alarms, etc.
4.1 Operating information
The Initial menu shows different temperatures and times of day.
Different operating symbols show the functions for which there are
demand or which are in operation.
Fig. 14
4.2 Info button
▶Press intheInitial menu.
Detailed information about temperatures, operating mode, etc., is
displayed.
▶ Turn the dial to see all the information.
▶ Press to return to the initial.
▶ Press in a menu display.
The detailed information is displayed for as long as is pressed.
▶ Release .
The menu display is displayed.
Fig. 15
4.3 Operating symbols
Symbols for different functions and components for which there is a
need or which are in operation are displayed in the bottom right corner
of the Initial menu. The operating symbols displayed can vary depending
on the type of heat pump.
Fig. 16 Operating symbols
[1] Compressor
[2] Alarm (compressor, additional heat)
[3] Heating
[4] Electric additional heat
[5] Energy supply cut-off
[6] Hot water
[7] Extra hot water
[8] Hot water peak
[9] Pool (option)
[10] Cooling (option)
[11] Sun (option)
[12] Shunted additional heat (option)
[13] External controls
[14] Program/Time control
[15] Party
[16] Holiday
[17] Screed drying
[18] Information log
6 720 805 492-13.1I
6 720 807 583-11.1I
1 2 3
4 5 6
7 8 9
10 11
6 720 805 492-16.1I
1514
16
13
12
1817

Menu overview
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5 Menu overview
The top menu for the customer is:
•1 Room temperature
•2 Hot water
•3 Holiday
•6 Energy measurements
•7 Timers
•8 External control
•12 General
•13 Alarms
•14 Access level
•15 Return to factory settings
Factory value = F-value
HP x = Heat pump 1 or 2 / Compressor 1 or 2
No. Name F value Min. Max. Alternative
1Roomtemperature
1.1 Circuit 1 Heating
1.1.5 Heat curve
1.1.6 Compressor 1 operating time on/off 20,0 10,0 ( Comfort ) 30,0 ( Economy )
1.1.7 Compressor 2 operating time on/off 20,0 10,0 ( Comfort ) 30,0 ( Economy )
1.1.10 Room sensor
1.1.10.1 Room temperature influence (with room sensor) 3,0 0,0 10,0
1.1.11 Room temperature program
1.1.11.1 Active program HP optimized HP optimized /
Program 1 / Program 2
1.1.11.2 View/edit active program
1.1.11.3 Room temperature normal 20,0 °C 10,0 °C 35,0 °C
1.1.11.4 Temperature increase/decrease (no room sensor) =--/-/+/++
1.1.11.6 Room temperature influence 3,0 0,0 10,0
1.1.11.7 Room temperature exception 17 °C 10 °C 30 °C
1.1.11.8 Copy to all heating circuits No No / Yes
1.3 Circuit 2 (option)
1.3.5 Heat curve (see 1.1.5)
1.3.7 Room sensor (see 1.1.10)
1.3.8 Room temperature program (see 1.1.11)
1.4 Circuit 3 (option) (see 1.3)
1.5 Circuit 4 (option) (see 1.3)
1.10 General
1.10.1 Summer/winter operation
1.10.1.1 Winter operation Automatic On / Automatic / Off
1.10.1.2 Outdoor temperature limit for change over 18 °C 5 °C 35 °C
2Hotwater
2.2 Hot water mode Economy Comfort / Economy
2.3 Extra hot water
2.3.1 Extra hot water duration 0h 0h 48h
2.3.2 Extra hot water stop temperature 65,0 °C 50,0 °C 65,0 °C
2.4 Hot water peak
2.4.1 Day of the week None None /Day/ All
2.4.2 Interval in weeks 11 4
2.4.3 Start time 3:00 0:00 23:00
2.5 Hot water program
2.5.1 Active program Always hot water Always hot water /
Program 1 / Program 2
2.5.2 View/edit active program
3Holiday
3.1 Circuit 1 and hot water
3.1.1 Activate holiday function No No / Yes
3.1.2 Start date
3.1.3 Stop date
3.1.4 Room temperature 17,0 °C 10,0 °C 35,0 °C
3.1.5 Copy to all heating circuits No No / Yes
3.1.6 Block hot water production No No / Yes
3.2 Circuit 2 (option) (see 3.1)
3.3 Circuit 3 (option) (see 3.1)
3.4 Circuit 4 (option) (see 3.1)
6 Energy measurements
Table 3 Menu overview

Settings Customer level
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8
6 Settings Customer level
6.1 Mode button functions
By pressing , the following functions can be used directly:
• Room temperature normal / Temperature increase/decrease
•Hot water mode
•Extra hot water duration
•Party
•Holiday
•Disable cooling
Room temperature normal / Temperature increase/decrease
Here, temperature changes for Circuit 1 can be made. If this circuit is
equipped with a room temperature sensor, the display shows Room
temperature normal, otherwise Temperature increase/decrease is
shown.
▶ For description of setting of Room temperature normal
(Chapter 6.2, 1.1.11.3 Room temperature normal ).
▶ For description of setting of Temperature increase/decrease
(Chapter 6.2, 1.1.11.4 Temperature increase/decrease ).
Hot water mode
▶ For description of Hot water mode
(Chapter 6.3, 2.2 Hot water mode ).
6.1 Generated energy
6.2 Consumption electric additional heat
7 Timers (Timers that are running are displayed)
8 External control
8.1 Heat pump 1
8.1.1 External input 1
8.1.1.14 Room temperature No (0,0 °C) 10,0 °C 35,0 °C
8.1.2 External input 2 (see 8.1.1)
8.2 Heat pump 2 (see 8.1)
8.5 External input circuit 2 (option)
8.5.2 Block heating at tripped underfloor temperature limiter No No / Yes
8.5.3 Block heating No No / Yes
8.5.6 Room temperature No (0,0 °C) 10,0 °C 35,0 °C
8.6 External input circuit 3 (option) (see 8.5)
8.7 External input circuit 4 (option) (see 8.5)
12 General
12.1 Room sensor settings
12.1.1 Show outdoor temperature in room sensor No No / Yes
12.2 Set date yyyy-mm-dd
12.3 Set time hh:mm:ss
12.4 Summer/winter time Automatic Manual / Automatic
12.6 Display contrast 50% 20% 100%
12.7 Language
13 Alarms
13.1 Information log
13.2 Delete information log
13.3 Alarm log
13.4 Delete alarm log No No / Yes
13.7 Alarm indication
13.7.1 Alarm buzzer signal
13.7.1.1 Interval 2s 1s 3600s (60min)
13.7.1.2 Blocking time Off Start time 0:00-23:45/
Stop time 0:00-23:45
13.7.2 Alarm indication control unit
13.7.2.1 Block alarm buzzer No No / Yes
13.7.3 Alarm indication room sensor
13.7.3.2 Block alarm indicator lamp No No / Yes
14 Access level
15 Return to factory settings
No. Name F value Min. Max. Alternative
Table 3 Menu overview
The controller language can be changed with the
button.
▶ Press the button in the initial menu for at least 5
s, then select the required language.
It always takes some time for a change of a heating
setting, e.g. an increase or decrease in room
temperature, to apply. The same applies in the event of a
quick change of the outdoor temperature. This is why
you should always wait for at least 24 hours before
making a new change.

Settings Customer level
R1000 – 6 721 831 636 (2021/03) en 9
Extra hot water duration
▶ For description of setting of Extra hot water
(Chapter 6.3, 2.3 Extra hot water ).
Party
Party mode means that a running room program is stopped during the
set time in order to avoid a temperature drop.
>Number of hours
▶ Select the number of hours that party mode should be active for.
The function starts immediately on all activated circuits.
>Circuit x
▶SelectYes to enable party mode.
Party mode can be enabled for each installed circuit. The menu is
displayed only if more than one circuit is installed.
>Deactivate party mode
▶SelectYes to disable party mode on all activated circuits.
The heat pump returns to program mode.
The menu is displayed only if party mode is active.
Holiday
▶ For description of setting of Holiday
(Chapter 6.3, 3 Holiday ).
Disable cooling
The menu is displayed only if the cooling function is installed and affects
all circuits with cooling.
6.2 Room temperature
Press the button in the Initial menu to move to the top menu level.
Select 1Room temperature to adjust the heating.
Under 1Room temperature there is:
•1.1 Circuit 1 Heating
•1.3/1.4 Circuit 2, 3... (option)
•1.10 General
1.1 Circuit 1 Heating
1.1.5 Heat curve
The heat curve constitutes the basis for the control unit's control of the
temperature on the heating water to the circuit and indicates how high it
needs to be in relation to the outdoor temperature. The control unit
increases the temperature of the heating water when the outdoor
temperature drops. The temperature of the heating water out to the
circuit, i.e. the flow temperature is measured by sensor T1 for circuit 1
(full name E11.T1) and sensor T1 for circuit 2 (full name E12.T1).
Each circuit is controlled by its own heat curve. The installer sets the
type of heating for each circuit, that is Radiator or Underfloor. The heat
curve for Underfloor has lower valuesbecause the floors do not tolerate
such high temperatures.
Fig. 17 Radiator
The figure indicates the factory setting curve for a radiator circuit. At -
2.5 °C the flow set point is 37.4 °C.
Fig. 18 Underfloor
The figure indicates the factory setting curve for an underfloor circuit. At
-2.5 °C the flow set point is 27.2 °C.
Setting of heat curve
A heat curve is set for each circuit. If the room temperature is perceived
to be too high or too low in the circuit, it is preferable to adjust the curve.
The curve can be changed in different ways. The slope of the curve can
be changed by offsetting the flow temperature upwards or downwards
on the left-hand side (the value at outdoor temperature 20 °C, factory
After a period with blocked hot water production, e.g.,
holiday, it is recommended to enable the extra hot water
function so as to eliminate bacteria and quickly reach the
correct hot water temperature.
Factory setting 0h
Lowest value 0h
Highest value 99h
Table 4 Party duration
Factory setting No
Alternative No/Yes
Table 5 Enable party mode
Factory setting No
Alternative No/Yes
Table 6 Deactivate party mode
It takes a long time before the cooling mode manages to
affect the temperature in the house, therefore wait at
least one day after disabling/enabling before making any
additional adjustments.
If the heat curve has been set too high, the display will
show the message Too high heat curve setting.
▶ Change the heat curve setting.
6 720 614 789-15.3I
T
1(˚C)
T2(˚C)
20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35
80
70
60
50
40
30
20
10
6 720 614 789-16.3I
T
1(˚C)
T2(˚C)
20 15 10 5 0 -5 -10 -15 -20 -25 -30 -35
80
70
60
50
40
30
20
10

Settings Customer level
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10
value 22.0 °C) as well as the right-hand side (the value at outdoor
temperature -35 °C, factory setting 60.0 °C). In addition, the curve can
be affected by every 5th outdoor temperature degree.
The value at 0 °C is displayed above the curve's left-hand point, factory
value 35.7 °C.
Fig. 19 Setting window Heat curve (radiator)
Change the left item:
▶ Press the menu dial when the square is marked.
The value is marked.
Fig. 20
▶ Turn the menu dial to change the value. Press the dial to save or use
to return without saving.
In the window, the square is marked again and any changed values are
displayed after the square. In addition, the curve is updated according
to the new value.
Change the right point:
▶ Turn the menu dial when the square is marked. The upper square is
changed to outdoor temperature with the corresponding curve value
after the colon. The circle marks the relevant curve position.
▶ Continue to turn the dial until it shows a square before the colon.
▶ Press the dial to mark the value.
Fig. 21
▶ Turn the menu dial to change the value. Press the dial to save or use
to return without saving.
In the window, the square is marked again and any changed values are
displayed after the square. In addition, the curve is updated according
to the new value.
Change a specific value, for example the value at an outdoor
temperature of 0 °C:
▶ Turn the menu dial when the square is marked until 0 0 °C is marked
(Fig. 23).
▶ Press the dial to mark the value.
Fig. 22
▶ Turn the menu dial to change the value.
Fig. 23
▶ Press the dial to save or use to return without saving.
▶ Use to leave the curve setting window and return to the menu.
1.1.6 Compressor 1 operating time on/off
▶ Select how long the compressor should be on or off in heating mode.
Higher set values result in fewer compressor starts and stops, which
achieves higher economy. However, more pronounced temperature
fluctuations in the heating system may result than with lower values.
1.1.7 Compressor 2 operating time on/off
Same as for 1.1.6 Compressor 1 operating time on/off .
1.1.10 Room sensor
1.1.10.1 Room temperature influence (with room sensor)
▶ Set how much a 1 K ( °C) difference in room temperature should
influence the set point value for the flow line temperature.
Example: at a 2 K ( °C) deviation from the set room temperature, the
set point value for the flow line temperature is changed by 6 K ( °C) (2
K deviation * factor 3 = 6 K).
1.1.11 Room temperature program
▶ Choose if the circuit should be controlled with a program or not.
Optimised operation
This means that the control unit is only controlled by the flow set point
value (Chapter 6.2.1), without programmed changes during the day.
Optimised operation provides the best comfort and energy savings in
the vast majority of cases.
Program 1 and 2
These selections provide an opportunity to define user programs for
time control by adjustingthe start and stop times, as well as a normal and
an programmed temperature.
6 720 614 789-18.3I
6 720 614 789-19.3I
6 720 614 789-23.3I
Recommendations:
▶ Increase the value of the right point if it feels too cold
at low outdoor temperatures.
▶ Increase the value of curve at 0 °C if it feels a little cold
at outdoor temperatures around 0.
▶ Increase or decrease the value of the curve equally at
the right and left points to fine adjust the heat (the
curve is offset parallel).
6 720 614 789-21.3I
6 720 614 789-22.3I

Settings Customer level
R1000 – 6 721 831 636 (2021/03) en 11
To set the desired time of day:
▶SelectProgram 1 or Program 2.
▶Gotomenu1.1.11.2 View/edit active program.
▶ Select day by turning the menu dial.
Fig. 24
▶ Press the menu dial to mark the value to be changed.
Fig. 25
▶ Turn the menu dial until the desired setting has been selected.
▶ Then press the menu dial.
▶ Turn the menu dial to be able to set additional values in the same way
as above.
▶ Go back one step with .
▶SelectSaving alternative:
–Return without saving
–Program 1
–Program 2
The set changes are saved as a selected program or not at all.
▶ To adjust the normal temperature, proceed to menu 1.1.11.3 Room
temperature normal.
▶ To adjust the exceptional temperature, proceed to menu 1.1.11.7
Room temperature exception.
Room temperature program when there is a room sensor:
1.1.11 Room temperature program
1.1.11.1 Active program
If a program is selected, the following (if the menu button is turned) is
displayed:
1.1.11.2 View/edit active program
1.1.11.3 Room temperature normal
▶ Set the desired set point for the room temperature.
1.1.11.6 Room temperature influence
▶ Set the values in the same way as for1.1.10.1 Room temperature
influence .
1.1.11.7 Room temperature exception
▶ Set the temperature that should apply as exceptional temperature in
the program.
The menu is only displayed if Program 1 or Program 2 is selected.
1.1.11.8 Copy to all heating circuits
▶SelectYes to have the same control for all installed circuits.
The menu is displayed only under Circuit 1 .
Room temperature program when there is no room sensor:
1.1.11 Room temperature program
1.1.11.1 Active program
1.1.11.2 View/edit active program
The same as when there is a room sensor, see above.
1.1.11.3 Room temperature normal
▶ Set the measured value in the room.
The indicated value is used by temperature programs to calculate the
difference between normal and exceptional temperature.
1.1.11.4 Temperature increase/decrease
▶ Use this function to adjust the room temperature so that the normal
room temperature (see the previous menu) becomes the desired
temperature.
▶ Use this function to simply increase or decrease the heat when there
are no room sensors.
– – Results in approx. 1 °C lower room temperature.
– results in approx. 0.5 °C lower room temperature.
+ results in approx. 0.5 °C higher room temperature.
++ results in approx. 1 °C higher room temperature.
1.1.11.6 Room temperature influence
▶ Set the values in the same way as for 1.1.10.1 Room temperature
influence .
1.1.11.7 Room temperature exception
The same as when there is a room sensor, see above.
1.1.11.8 Copy to all heating circuits
The same as when there is a room sensor, see above.
1.3 Circuit 2 (option)
▶ Set the values in the same way as for 1.1 Circuit 1 Heating .
1.4 Circuit 3 (option)
▶ Set the values in the same way as for 1.1 Circuit 1 Heating .
1.5 Circuit 4 (option)
▶ Set the values in the same way as for 1.1 Circuit 1 Heating .
6.2.1 Set point value
The heating circuit's set point value is the temperature of the flow that
the heat pump attempts to maintain. Sometimes, the measured actual
value fluctuates a bit upward and downward depending on changes in
the outdoor temperature or a large hot water demand.
The set point value is normally based on:
• Current curve value (the low line temperature at the current outdoor
temperature according to the applicable heat curve).
• Current curve influence through:
–Room sensor
–Holiday
–Active program
Program Day Start Stop
Program 1, 2 Mon - Sun 5:30 22:00
Table 7 Program 1 and 2
6 720 643 415-13.1I
6 720 643 415-14.1I
It always takes some time for a change of a heating
setting, e.g. an increase or decrease in room
temperature, to apply. The same applies in the event of a
quick change of the outdoor temperature. This is why
you should always wait for at least 24 hours before
making a new change.
The set point value specified by the customer/installer is
most often the room temperature, which is recalculated
by the control unit into a corresponding flow
temperature set point value. Under normal conditions, 1
K ( °C) in room temperature corresponds to approx. 3 K
( °C) in flow temperature.

Settings Customer level
R1000 – 6 721 831 636 (2021/03) en
12
–External control
Set point value calculation
The set point value for the heating circuit is the current curve value
adjusted with active curve influence, if any such exists.
Priority order for curve influence is:
•External control
•Active program
•Holiday
Only one of these can be active. How big the influence should be and
when to exercise it is set in the respective function.
Fixed set point value
A fixed set point value (not curve-based) applies in the event of:
• External set point value. The set point value is determined according
to input signal 0-10V where 1V is 10 °C and 10V is 80 °C (0V triggers
an alarm).
Set point value limitation
The calculated set point value is always checked against the permitted
temperature limits.
The applicable set point value T1 for Circuit 1 and the measured actual
value for T1 are used to activate and deactivate the heat demand.
The following applies to Circuit 2, 3...: When the actual value for the
mixed circuit's T1 is low in relation to the set point value, more heating
water is shunted into the circuit so as to maintain the set point value.
If the flow temperature has been below the set point value for a certain
period of time, there is heat demand and the compressor produces heat
before there is a too significant temperature reduction indoors. This
happens until the flow temperature is a couple of degrees higher than
the set point value. (Or because Maximum operating time for heating
at hot water demand has passed.)
Heating demand is not active during summer operation.
1.10 General
1.10.1 Summer/winter time
1.10.1.1 Winter operation
If On is selected, the heat pump is constantly in winter operation and
heat and hot water are always produced. Off signifies constant summer
operation; only hot water is produced. Automatic signifies change-over
at the set outdoor temperature.
1.10.1.2 Outdoor temperature limit for change over
The menu is displayed only if Automatic selected in 1.10.1.1 Winter
operation .
6.3 Hot water
Under 2Hot water there are functions to:
• Select operating mode
•Request2.3 Extra hot water
• Specify when 2.4 Hot water peak must be performed in order to
eliminate bacteria.
•Setany2.5 Hot water program
2.2 Hot water mode
▶ Select hot water mode.
Economy means that the hot water is permitted to cool slightly before
hot water production starts compared to Comfort . Heating stops at
a slightly lower temperature.
▶ChangetoComfort If more or hotter hot water is desired.
This setting must be used if electric additional heat is missing or if the
hot water circulation is used, when the temperature in the hot water
circulation is otherwise too low.
The factory settings for on and off temperature are approx. 8 K ( °C)
lower in Economy mode compared to Comfort mode. These values can
be adjusted by the installer.
2.3 Extra hot water
Additional amount of hot water is produced by temporarily increasing
the temperature of the hot water during the set number of hours to the
indicated stop temperature.
2.3.1 Extra hot water duration
▶ Set the duration of extra hot water production.
2.3.2 Extra hot water stop temperature
▶ Set the stop temperature for extra hot water.
The heat pump starts the function directly and uses the compressor first
and then the additional heat source to increase the temperature. When
the desired number of hours have passed, the heat pump returns to
normal hot water mode.
2.4 Hot water peak
Hot water peak means a temporary increase in the hot water
temperature to approx. 65 °C for thermal elimination of bacteria
(pasteurisation).
For the hot water temperature increase, the compressor is used first;
the additional heat source then continues alone.
2.4.1 Day of the week
▶ Set the day when hot water peak should happen. None means that
the function is deactivated. All means that a hot water peak takes
place every day.
If hot water peak is deactivated comfort mode must be selected in the
menu 2.2 Hot water mode .
2.4.2 Interval in weeks
▶ Set how often a hot water peak should take place.
– 1 means a hot water peak every week.
– 2 means that a hot water peak takes place in all even weeks of the
year, i.e., in week 2, 4, 6, etc.
– 3 means week 3, 6, 9, etc.
– 4 means week 4, 8, 12, etc.
2.4.3 Start time
▶ Set time for the hot water peak.
2.5 Hot water program
Program 1 and Program 2 enables you to block hot water production
during the set time.
2.5.1 Active program
2.5.2 View/edit active program
The menu is only displayed if Program 1 or Program 2 is selected.
Programs are changed in the same way as for 1.1.11 Room
temperature program .
In the event of alternation between winter and summer
operation and vice versa, there is a certain delay aimed
at preventing constant starting and stopping of the
compressor when the outdoor temperature oscillates
around the temperature limit.
DANGER: Risk of burn injuries.
▶ Use a mixing valve when the hot water temperature
exceeds 60 °C.
WARNING: Risk of scalding.
At hot water temperatures greater than 60 °C, there is a
risk of scalding.
▶ Exercise caution when using hot water immediately
after a hot water peak.

Settings Customer level
R1000 – 6 721 831 636 (2021/03) en 13
6.4 Holiday
During holidays (absence), the heating can, for example, be kept at a
lower or higher level and hot water production can be switched off. Start
and Stop date, Room temperature and Block hot water production are
only displayed if the holiday function is activated.
3.1 Circuit 1 and hot water
3.1.1 Activate holiday function
3.1.2 Start date
3.1.3 Stop date
▶ Set start and stop date for the desired period. Format yyyy-mm-dd.
The period starts and ends at 00:00. Both the start and end date are
included in the period.
▶ Terminate the period prematurely by indicating No in menu item
3.1.1 Activate holiday function .
3.1.4 Room temperature
▶ Set the room temperature that should apply to the circuit during the
period.
3.1.5 Copy to all heating circuits
3.1.6 Block hot water production
3.2 Circuit 2 (option)
▶ Set the values in the same way as for 3.1 Circuit 1 and hot water .
3.3 Circuit 3 (option)
▶ Set the values in the same way as for 3.1 Circuit 1 and hot water .
3.4 Circuit 4 (option)
▶ Set the values in the same way as for 3.1 Circuit 1 and hot water .
6.5 Energy measurements
6.1 Generated energy
This displays 6.1 Generated energy in kWh divided into 6.1.1 Heating
and 6.1.3 Hot water.
6.2 Consumption electric additional heat
This displays 6.2 Consumption electric additional heat in kWh divided
into 6.2.1 Heating and 6.2.2 Hot water .
6.6 Timers
Timers are used by the control unit to count down the different time
dependent functions such as Extra hot water duration. At customer
level the following timers can be observed (only timers that are counting
are displayed):
6.7 External control
When an external input is connected, the control unit performs functions
which are set to Yes or is separated from 0 (Room temperature). When
the external input is no longer connected, the control unit returns to
normal mode. Only installed functions are displayed.
8.1 Heat pump 1
8.1.1 External input 1
8.1.1.9 Block compressor
8.1.1.11 Block additional heat
8.1.1.12 Block heating at tripped underfloor temperature limiter
8.1.1.13 Block heating
8.1.1.14 Room temperature
▶ Set the room temperature that should apply in the event of enabled
external control.
▶ Value > 0 °C enables the function.
The highest temperature is used if temperature changes have been set
for a certain circuit at several external inputs.
8.1.1.15 Block hot water production
8.1.2 External input 2
▶ Set the values in the same way as for 8.1.1 External input 1 .
8.2 Heat pump 2
▶ Set the values in the same way as for 8.1 Heat pump 1 .
8.5 External input circuit 2
8.5.2 Block heating at tripped underfloor temperature limiter
8.5.3 Block heating
8.5.6 Room temperature
8.6 External input circuit 3
▶ Set the values in the same way as for 8.5 External input circuit 2 .
8.7 External input circuit 4
▶ Set the values in the same way as for 8.5 External input circuit 2 .
6.8 General
Among other things, settings for date and time are available here.
12.1 Room sensor settings
12.1.1 Show outdoor temperature in room sensor
12.2 Set date
12.3 Set time
▶ Check and change, if necessary, date and time. These are used by the
control unit to manage the different clock settings, e.g., holiday and
room temperature program.
12.4 Summer/winter time
▶ Select if there should be automatic change over between summer and
winter time or not (dates according to EU standard).
12.6 Display contrast
▶ If necessary, change the background light of the control panel.
12.7 Language
▶ Change language, if desired.
6.9 Alarms
The different alarms that can occur are described in (Chapter 7).
Under 13 Alarms there is:
•13.1 Information log
•13.2 Delete information log
•13.3 Alarm log
•13.4 Delete alarm log
•13.7 Alarm indication
Energy is measured per compressor; the calculated
results are added prior to being displayed.
Timer F value
7.1 Extra hot water 0h
7.3 Alarm mode delay 1h
7.5 Operating time for heating at hot water demand 20min
7.6 Hot water, operating time at heating demand 30min
7.7/7.8 Heat pump x timers
7.7.1/7.8.1 Compressor start delay 10min
7.11 Additional heat timers
7.11.1 Additional heat start delay 60min
7.11.2 Delay mixing valve control after additional heat start 20min
Table 8 Timers

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R1000 – 6 721 831 636 (2021/03) en
14
13.1 Information log
The information log displays information from the heat pump. The
control panel output mode displays the symbol forinformation log when
the active information is available.
13.2 Delete information log
The information log is deleted here.
13.3 Alarm log
The alarm log shows the alarms and warnings that have occurred. Alarm
category (Chapter 7.5) is displayed in the top left corner of the
display. If the alarm is active, the alarm symbol (Chapter 4.3) is
displayed both in the alarm log and the initial menu of the control panel.
13.4 Delete alarm log
The alarm log is deleted here.
13.7 Alarm indication
Settings for alarm buzzer and status lamp are made here.
13.7.1 Alarm buzzer signal
13.7.1.1 Interval
▶ Set the length of the alarm interval.
The alarm buzzer sounds for one second and is silent during the rest
of the interval. The setting applies to all alarm buzzers.
13.7.1.2 Blocking time
▶ Set the times between which alarms buzzers should not be allowed to
produce an acoustic signal.
13.7.2 Alarm indication control unit
13.7.2.1 Block alarm buzzer
The setting applies only to the control unit's alarm buzzer.
13.7.3 Alarm indication room sensor
13.7.3.2 Block alarm indicator lamp
The setting applies to all room sensors.
6.10 Access level
Access level is Customer as standard: This level gives you access to all
functions that the user requires. The installer also has access to the
additional functions required at installation.
6.11 Return to factory settings
▶Select15 Return to factory settings and Yes to reset all customer
settings to the factory settings. Settings made by the installer are not
affected.
7Alarm
7.1 Control unit and room sensor alarm lamp
The status lamp on the control unit is used to show ON/OFF status for the
heat pump but also to show possible alarms. The status lamp is therefore
also called alarm lamp.
In the event of an alarm the alarm lamp flashes red (control unit) until the
warning cause has disappeared. The alarm lamp is not used for warning
alarms.
The room sensor alarm lamp can be blocked.
The room sensor display is used to indicate alarms for some alarm
categories (Table 10 ). The display window slowly flashes red until
the alarm has been acknowledged in the heat pump control unit, or been
automatically reset.
The room sensor alarm display function is referred to as alarm lamp in
this chapter.
The room sensor alarm lamp can be blocked.
7.2 Alarm buzzer at alarm
At an alarm the alarm buzzer on the heat pump sounds for one second
per alarm buzzer interval set. At certain times of the day the alarm buzzer
can be blocked or blocked altogether.
In the event of a warning, the alarm buzzer does not sound.
7.3 Acknowledgement of alarms
Acknowledgement means that you have to press to make the
alarm window disappear. What happens after acknowledgement is
described in the respective alarm description.
In most cases, warnings do not have to be acknowledged. The alarm
window disappears by itself once the warning cause has disappeared. It
is, however, possible to acknowledge the warning.
7.4 Alarm timer, alarm mode
In the event of an alarm that stops the compressor the control unit starts
a timer at 1h. If the fault does not recur additional heat may start when
the timer has counted down.
Behaviour Function
The lamp lights green
continuously.
The heat pump is running.
The lamp flashes red. There is an alarm which has not been
acknowledged.
The lamp lights red
continuously.
The alarm has been acknowledged but the
alarm cause remains.
The lamp flashes green
slowly.
The heat pump is in stand-by mode1).
1) Stand-by means that the heat pump is running but no heating or hot water
demand exists.
Table 9 Alarm lamp control unit

Alarm
R1000 – 6 721 831 636 (2021/03) en 15
7.5 Alarm categories
The alarms are divided into different categories depending on the type
and seriousness of the fault. Alarm category is displayed in the alarm
window and alarm log.
Categories A-H are alarms, categories I-J are warnings/information, categories K-M are warnings, category Z is information.
[In] Temporary stop of compressor. The information may recur a
number of times during a certain time period; if there are more
during the period, a category A alarm is sounded.
[J] Temporary stop of compressor. The information may recur a
number of times during a certain time period; if there are more
during the period, a category A alarm is sounded.
[M] Used for board connection problems.
7.6 Alarm window
When an alarm/warning occurs, the display shows information about
what has happened. At the same time, information is saved in the alarm
log. The alarm symbol is displayed in the initial menu of the control panel
(Chapter 4.3).
Example of an alarm:
Fig. 26
7.7 Alarm functions
The different alarms that can occur are presented here, the alarm text is
indicated in the heading.
Most alarm texts contain a designation of the part of the heat pump that
has caused the alarm. Always indicate the whole alarm information when
you are in contact with the installer.
E21 refers to heat pump 1, E22 refers to heat pump 2.
E11 refers to circuit 1, E12 circuit 2, E13 circuit, 3, etc.
Txx refers to different temperature sensors.
7.7.1 High hot gas temperature E2x.T6
Function: Compressor stops. Activated when the temperature from the
compressor becomes too high. The alarm can occur in individual cases
under extreme service conditions.
Alarm timer starts: Yes.
Reset condition: The hot gas temperature drops to the permitted
temperature.
Category: A.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.2 Tripped low pressure switch E2x.RLP
Function: Compressor stops. Activated when the pressure in the
refrigerant circuit of the heat pump becomes too low.
Alarm timer starts: Yes.
Reset condition: The pressure goes back to the permitted level.
Category: A.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Check and clean the particle filter when required.
▶ Contact the dealer if the alarm remains after acknowledgement.
7.7.3 Tripped high pressure switch E2x.RHP
Function: Compressor stops. Activated when the pressure in the
refrigerant circuit becomes too high.
Alarm timer starts: Yes.
Reset condition: The pressure goes back to the permitted level.
Category: A.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Contact the dealer if the alarm remains after acknowledgement.
7.7.4 Low pressure collector circuit
Function: Compressor stops. Activated when the pressure in the
collector circuit becomes too low.
Alarm timer starts: Yes.
Reset conditon: The pressure goes back to the permitted level.
Category: A.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Contact the dealer if the alarm remains after acknowledgement.
Meaning A B C D E F G h In J K L M Z
Stops the compressor X XX XX X X
Stops additional heat XX X
Alarm lamp, alarm buzzer is activated X XX XXXXX
Alarm delay 5s 3s 15 min 1 min 5s 1s 1s 1s 5s 5s 2s 5s 0s 0s
Requires acknowledgement to restart X XX X X
Can be restarted before acknowledgement X X XXXX X
Menu display must be acknowledged X XX XXXXXXX
Placed in the information log X X X
Table 10 Alarm categories
6 720 807 583-12.1I

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16
7.7.5 Low temperature collector circuit in E2x.T10
Function: Alarm is given if the collector circuit temperature is too low
and if warning of this has been given several times.
Alarm timer starts: Yes.
Reset condition: The collector circuit temperature exceeds the lowest
permitted temperature.
Category: A.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Contact the dealer if the alarm remains after acknowledgement.
7.7.6 Low temperature collector circuit out E2x.T11
Function: Alarm is given if the collector circuit temperature is too low
and if warning of this has been given several times.
Alarm timer starts: Yes.
Reset condition: The temperature of the refrigerant exceeds the lowest
permitted temperature.
Category: A.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Contact the dealer if the alarm remains after acknowledgement.
7.7.7 Too high boot count I/O board BAS x
Function: Compressor stops. Is activated if the controller has executed
more than three new starts after the alarm Check CANbus cable
connection,
(Chapter 7.8.6).
Alarm timer starts: Yes.
Reset condition: The CAN-BUS communication with the controller has
been restored.
Category: A.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Contact the dealer if the alarm remains after acknowledgement.
7.7.8 Motor cut-out 1 E2x.F11, Compressor
Function: Activated when the compressor's motor cut-out has tripped
because of high current or lost current phase resulting in undue strain on
the compressor.
Alarm timer starts: Yes.
Reset condition: Motor cut-out reset.
Category: B.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Check the heating system fuses, and main fuses.
▶ Contact the dealer if the alarm remains after acknowledgement.
7.7.9 Phase error E2x.B1
Function: The compressor stops when the phase guard trips because of
the lack of a phase or the presence of a phase sequence error. Also too
low (<195V) or too high (>254V) voltage generates an alarm.
Alarm timer starts: Yes.
Reset condition: The error has been remedied.
At too low/high voltage: The voltage is greater than 201V or lower than
250V.
Category: E.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Check the heating system fuses, and main fuses.
▶ Contact the dealer if the alarm remains after acknowledgement.
7.7.10 Failure on sensor E2x.T6 hot gas
Function: The compressor stops because the hot gas cut-out cannot be
guaranteed. Activated when the sensor's value indicates a temperature
lower than -50 °C.
Alarm timer starts: Yes.
Reset condition: The value of the sensor indicates >
-50 °C.
Category: E.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.11 Short circuit on sensor E2x.T6 hot gas
Function: The compressor stops because the hot gas cut-out cannot be
guaranteed. Activated when the sensor's resistance value indicates a
temperature higher than 150 °C.
Alarm timer starts: Yes.
Reset condition: The value of the sensor indicates < 150 °C.
Category: E.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.12 High flow temperature E1x.T1
Function: Compressor stops. Activated when the temperature in the
heating circuit becomes too high in relation to the settings that are
made.
Alarm timer starts: Yes.
Reset condition: The sensor's value falls below the temperature for
beginning of the heating demand.
Category: E.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Lower the heating on the circuit.
▶ Check that the thermostat valves are open.
▶ Contact the dealer if the alarm recurs often.
7.7.13 Faulty electric heater E21.E2
Function: The electric heater is turned off. Activated by tripped
overheat protection on the electric additional heat, high flow
temperature or too high temperature in electric additional heat. The
automatic trip fuse to the electric additional heat may have been tripped
due to, for example, a short circuit.
Reset condition: Overheat protection reset or the temperature has
fallen.
Category: F.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Reset the overheat protection if this has been triggered.
▶ Reset the automatic fuse if this has been tripped.
▶ Contact the dealer if the alarm remains after acknowledgement.

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R1000 – 6 721 831 636 (2021/03) en 17
7.7.14 Overheat protection tripped hot water electric heater
Function: The electric heater is turned off. If alarm output from the
electric heater has been connected to the multi module, the alarm is
given when an error occurs.
Reset condition: The error in the electric heater has been overcome and
no alarm signal.
Category: F.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Contact the dealer if the alarm remains after acknowledgement.
7.7.15 Failure on sensor E31.T32 anti-freeze cooling
Function: The mixing valve in the collector circuit is closed. Activated
when the sensor's value indicates a temperature lower than -10 °C. The
sensor is used in certain cooling applications and is placed in the
collector circuit for cooling to prevent the heat exchanger from freezing.
Reset requirement:The value of the sensor indicates >-10 °C.
Category: G.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.16 Short circuit on sensor E31.T32 anti-freeze cooling
Function: The mixing valve in the collector circuit is closed. Activated
when the sensor's value indicates a temperature higher than 30 °C. The
sensor is used in the collector circuit for cooling in order to prevent the
heat exchanger from freezing.
Reset requirement:The value of the sensor indicates >30 °C.
Category: G.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.17 Error dew point sensor E1x.TM
Function: Cooling on current mixing valve is aborted. Activated when
the signal from the sensor deviates from its normal operating range. The
alarm may appear after a power failure but the alarm cause normally
disappears automatically and the only thing that has to be done is to
acknowledge the alarm.
Reset condition: The sensor's signals return to the normal operating
range.
Category: G.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.18 Faulty protective anode E41.F31
Function: Does not affect the compressor or additional heat. The alarm
is activated when the anode in the hot water heater is broken or does not
work.
Reset condition: The anode should be taken care of so as to prevent
corrosion in the hot water heater.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Acknowledgement is required.
▶ Contact the dealer.
7.7.19 Failure on sensor E11.T1 flow
Function: The system switches over to control based on sensor T8. The
alarm is activated when the sensor's value indicates a temperature lower
than 0 °C.
Reset condition: The value of the sensor indicates >0 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.20 Short circuit on sensor E11.T1 flow
Function: The system switches over to control based on sensor T8. The
alarm is activated when the sensor's value indicates a temperature
higher than 110 °C.
Reset condition: The value of the sensor indicates
< 110 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.21 Failure on sensor E12.T1, E13.T1... flow
Function: The mixing valve for the circuit is closed completely. The
alarm is activated when the sensor's value indicates a temperature lower
than 0 °C.
Reset condition: The value of the sensor indicates >0 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.22 Short circuit on sensor E12.T1, E13.T1... flow
Function: The mixing valve for the circuit is closed completely. The
alarm is activated when the sensor's value indicates a temperature
higher than 110 °C.
Reset condition: The value of the sensor indicates
< 110 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.23 Failure on sensor T2 outdoor
Function: In the event of a failure on T2, the outdoor temperature is set
to 0 °C so that the heat pump can continue to produce heat. The alarm is
activated when the sensor's value indicates a temperature lower than -
50 °C.
Reset condition: The value of the sensor indicates
> -50 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.

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7.7.24 Short circuit on sensor T2 outdoor
Function: In the event of a short circuit on T2, the outdoor temperature
is set to 0 °C so that the heat pump can continue to produce heat. The
alarm is activated when the sensor's value indicates a temperature
higher than +70 °C.
Reset condition: The value of the sensor indicates
< 70 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.25 Failure on sensor T3 hot water
Function: The hot water production is terminated. The alarm is
activated when the sensor's value indicates a temperature lower than
0°C.
Reset condition: The value of the sensor indicates >0 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.26 Short circuit on sensor T3 hot water
Function: The hot water production is terminated. The alarm is
activated when the sensor's value indicates a temperature higher than
+110 °C.
Reset condition: The value of the sensor indicates < 110 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.27 Failure on sensor E1x.TT.T5 room
Function: The room temperature influence is set to 0, which means that
the room sensor cannot affect the heating system any longer. The alarm
is activated when the sensor's value indicates a temperature lower than
-1 °C.
Reset condition: The value of the sensor indicates
> -1 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.28 Short circuit on sensor E1x.TT.T5 room
Function: The room temperature influence is set to 0, which means that
the room sensor cannot affect the heating system any longer. The alarm
is activated when the sensor's value indicates a temperature higher than
+70 °C.
Reset condition: The value of the sensor indicates
< 70 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.29 Failure on sensor E31.TT.T5 room
Function: The alarm is activated when the sensor's value indicates a
temperature lower than -1 °C. In the event of a failure on sensor T5, the
room temperature influence is set to 0.
Reset condition: The value of the sensor indicates
> -1 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
7.7.30 Short circuit on sensor E31.TT.T5 room
Function: The alarm is activated when the sensor's value indicates a
temperature higher than +70 °C. In the event of a short circuit on sensor
T5, the room temperature influence is set to 0.
Reset condition: The value of the sensor indicates
< 70 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
7.7.31 Failure on sensor E2x.T8 heat transfer fluid out
Function: Activated when the sensor's value indicates a temperature
lower than 0 °C.
Reset condition: The value of the sensor indicates >0 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.32 Short circuit on sensor E2x.T8 heat transfer fluid out
Function: Activated when the sensor's value indicates a temperature
higher than 110 °C.
Reset condition: The value of the sensor indicates
< 110 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.33 Failure on sensor E2x.T9 heat transfer fluid in
Function: Activated when the sensor's value indicates a temperature
lower than 0 °C.
Reset condition: The value of the sensor indicates >0 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.34 Short circuit on sensor E2x.T9 heat transfer fluid in
Function: Activated when the sensor's value indicates a temperature
higher than 110 °C.
Reset condition: The value of the sensor indicates
< 110 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.

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▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.35 Failure on sensor E2x.T10
Function: Activated when the sensor's resistance value indicates a
temperature lower than -20 °C.
Reset condition: The value of the sensor indicates
> -20 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.36 Short circuit on sensor E2x.T10
Function: Activated when the sensor indicates a temperature in excess
of 70 °C.
Reset requirement: The sensor value displayed < 70 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.37 Failure on sensor E2x.T11
Function: Activated when the sensor's value indicates a temperature
lower than -50 °C.
Reset condition: The value of the sensor indicates
> -50 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.7.38 Short circuit on sensor E2x.T11
Function: Activated when the sensor indicates a temperature in excess
of 70 °C.
Reset requirement: The sensor value displayed < 70 °C.
Category: H.
Alarm lamp/buzzer: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the alarm remains active for more than three
hours or recurs often.
7.8 Warnings
7.8.1 Electric additional heat shut down due to high temperature
E2x.T8
Function: The electric heater is turned off. The warning is activated in
additional heat mode if the outgoing temperature of the heat transfer
fluid exceeds the maximum value.
Reset condition: The warning is deactivated when the temperature
falls.
Category: K.
Alarm lamp: Yes.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer if the warning recurs often.
7.8.2 High temperature difference heat transfer fluid E2x
Function: The warning is activated when the temperature difference
between heat transfer fluid out and heat transfer fluid in becomes too
high.
Reset condition: The warning is deactivated on acknowledgement of
the warning display.
Category: L.
Alarm lamp/buzzer: No.
Restart: The warning does not close anything but is registered in the
alarm log.
▶ Check and clean the particle filter, if required.
▶ Contact the dealer if the warning remains after acknowledgement.
7.8.3 High temperature difference collector circuit E2x
Function: The warning is activated when the temperature difference
between collector circuit out and collector circuit in becomes too big.
Reset condition: The warning is deactivated on acknowledgement of
the warning display.
Category: L.
Alarm lamp/buzzer: No.
Restart: The warning does not close anything but is registered in the
alarm log.
▶ Check and clean the particle filter, if required.
▶ Contact the dealer if the warning remains after acknowledgement.
7.8.4 The heat pump is now working in anti-freeze mode
Function: Activated when the temperature in one of the circuits
becomes too low.
Reset condition: The temperature in the circuit is increased.
Category: L.
Alarm lamp/buzzer: No.
Restart: Automatic once the alarm cause has disappeared.
▶ Contact the dealer.
7.8.5 Check connection to I/O board x
Function: Depends on the board.
Reset condition: Communication with the board is re-established.
Category: M.
Alarm lamp/buzzer: No.
Restart: Acknowledgement is required.
▶ Contact the dealer.
7.8.6 Check CANbus cable connection
Function: Communication with the controller has been interrupted. The
controller executes a new start if the alarm is still active after two hours.
If more than three new starts have been carried out within one hour, the
alarm Too high boot count I/O board BAS x (category A), Chapter
7.7.7.
Category: M.
Alarm lamp/buzzer: No.
Restart: Acknowledgement is required.
▶ Contact the dealer if the warning recurs often.
7.9 Information log
The information log displays information from the heat pump.

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7.9.1 High flow temperature E2x.T8
Function: The information is given if the temperature of the heating
medium is too high. The information can appear temporarily when high
room and hot water temperatures are set.
Reset condition: The information is deactivated when the temperature
falls to the permitted level.
Category: I.
7.9.2 Temporary heat pump stop E21.RLP
Function: Activated when the pressure in the refrigerant circuit of the
heat pump becomes too low. If the information appears several times
during a certain time period, the information transforms into a category
A alarm (Chapter 7.7.2).
Reset condition: The pressure goes back to the permitted level.
Category: I.
7.9.3 Temporary heat pump stop E21.RHP
Function: Activated when the pressure in the refrigerant circuit
becomes too high. If the information appears several times during a
certain time period, the information transforms into a category A alarm
(Chapter 7.7.3).
Reset condition: The pressure goes back to the permitted level.
Category: I.
7.9.4 Low temperature collector circuit in E2x.T10
Function: The information is given if the temperature of the refrigerant
to the heat pump is too low. If the information appears several times
during a certain time period, the information transforms into a category
A alarm (Chapter 7.7.5).
Reset condition: The temperature of the collector circuit exceeds the
lowest permitted temperature.
Category: J that can be transformed into A.
7.9.5 Low temperature collector circuit out E2x.T11
Function: The information is given if the temperature of the refrigerant
from the heat pump is too low. If the information appears several times
during a certain time period, the information transforms into a category
A alarm (Chapter 7.7.6).
Reset condition: The temperature of the collector circuit exceeds the
lowest permitted temperature.
Category: J that can be transformed into A.
7.9.6 Hot water peak failure, new try within 24 hours
Function: The hot water has not come up at the right temperature. The
hot water peak is repeated at the same time on the next day.
Reset condition: The correct hot water peak temperature is reached.
Category: Z.
7.9.7 Temporary heat pump stop due to working area limits
Function: The compressor stops until the hot gas temperature falls
below the set limit. The warning can occur when the heat pump works
close to the lowest permitted outdoor temperature.
Reset condition: The hot gas temperature is within the range of the
compressor.
Category: Z.
7.9.8 Temporary hot water stop due to working area limits
Function: Ongoing hot water operation is aborted and replaced with
heating operation. The warning can occur when the heat pump works
close to the lowest permitted outdoor temperature.
Reset condition: The hot gas temperature is within the range of the
compressor.
Category: Z.
7.9.9 Additional heat is now working at its highest temperature
Function: The additional heat begins to be stepped down. The
information is activated in additional heat mode if the outgoing
temperature (T1 or T8) approaches the set maximum value. The
information is blocked during hot water peaks or extra hot water.
Reset condition: The information is deactivated when the temperature
falls.
Category: Z.
7.9.10 Temporary hot water stop E2x
Function: Ongoing DHW mode is temporarily interrupted; the system
changes over to heating mode.
Reset condition: DHW temperature drops a few degrees.
Category: Z.