AERMEC HMI Series User manual

USER MANUAL
6228081_03
2020-02-20 08:52 0.0°C 0.0°C
+
-25°C
EN
HMI series
BHP series

This marking indicates that this product should not be disposed with other household
wastes in the entire EU. To prevent any harm to the environment or human health caused
by incorrect disposal of Waste Electrical and Electronic Equipment (WEEE), please return
the device using suitable collection systems, or contacting the retailer where the product
was purchased. For further information please contact the appropriate local authority.
The incorrect disposal of the product by the user will lead to the application of the
administrative sanctions envisaged by the laws in force.
All specifications are subject to modification without prior notice. Although every effort has been made
to ensure accuracy, Aermec cannot be held liable for any possible errors or omissions.
Dear customer,
Thank you for choosing an AERMEC product. It's the result of many years of experience and dedicated
design studies, and was built using first-class materials and highly advanced technologies.
The quality level is being constantly monitored, so AERMEC products are synonymous with Safety, Quality
and Reliability.
The data are subject to any modifications considered necessary to improve the product, at any time
and without prior notice.
Thank you again.
AERMEC S.p.A.

SUMMARY
1. USER INTERFACE ........................................................................................................................................ 5
1.1. Main Page (Home)...................................................................................................................................... 5
2. MENU STRUCTURE ..................................................................................................................................... 6
2.1. Function...................................................................................................................................................... 6
2.2. View............................................................................................................................................................. 6
2.3. Parameter ................................................................................................................................................... 7
2.4. Commission (Function).............................................................................................................................. 7
2.5. Commission (Parameter)........................................................................................................................... 8
2.6. General........................................................................................................................................................ 8
3. BASIC FUNCTIONS...................................................................................................................................... 8
3.1. Switching the unit on and off (On/Off)..................................................................................................... 8
3.2. Selecting a menu........................................................................................................................................ 9
4. FUNCTION MENU ....................................................................................................................................... 9
4.1. Navigating the menu................................................................................................................................. 9
4.2. Setting the operating mode (Mode)......................................................................................................... 9
4.3. Activating the function for fast domestic hot water production (Fast hot water) ............................... 10
4.4. Setting the priority between cooling and domestic hot water production (Cool+hot water) ............ 10
4.5. Set the priority between heating and domestic hot water production (Heat+hot water) .................. 11
4.6. Setting the noise reduction function (Quiet mode)................................................................................ 11
4.7. Setting the automatic setting compensation on the basis of external air (Weather depend) ............ 12
4.8. Setting a timer for programmed switch-on and/or switch-off (Weekly timer ).................................... 13
4.9. Enabling the Holiday Program function used for the weekly timer (Holiday release)......................... 14
4.10. Enabling/disabling the anti-legionella cycle (Disinfection)................................................................... 14
4.11. Setting a timed switch-on/switch-off (Clock timer) ................................................................................ 16
4.12. Setting programmed setting changes on system water delivery (Temp. timer) .................................. 17
4.13. Enabling emergency operation for heating or DHW (Emergen. mode)................................................ 18
4.14. Setting the winter period absence function (Holiday mode)................................................................. 19
4.15. Setting the daily timer programming (Preset mode).............................................................................. 19
4.16. Deleting current errors (Error reset)......................................................................................................... 20
4.17. WiFi connection reset function (Wifi reset).............................................................................................. 20
4.18. Loading the default settings (Reset) ........................................................................................................ 20
5. PARAMETER MENU .................................................................................................................................... 20
5.1. Navigating the menu................................................................................................................................. 20
5.2. Setting the temperature set-points used by the unit in the various modes (WOT-Cool~ ΔT-hot water) ............... 21
6. View MENU ................................................................................................................................................. 22
6.1. Navigating the menu................................................................................................................................. 22
6.2. Viewing the status of the unit components (Status)............................................................................... 22
6.3. Viewing the status of the unit parameters (Parameter) ......................................................................... 23
6.4. Viewing the active errors on the unit (Error) ........................................................................................... 24
6.5. Viewing the error log (Error log)............................................................................................................... 24
6.6. Viewing software information (Version).................................................................................................. 24

7. Commission MENU..................................................................................................................................... 24
7.1. Navigating the menu................................................................................................................................. 24
7.2. Setting the control logic (Ctrl.state) ........................................................................................................ 25
7.3. Setting the status of the 2-way valve in cooling mode (Cool 2-Way valve)........................................... 26
7.4. Setting the status of the 2-way valve in heating mode (Heat 2-Way valve).......................................... 26
7.5. Setting solar system integration (Solar setting) ..................................................................................... 26
7.6. Set the installation of a compatible Aermec accessory tank (DHW tank) ............................................. 27
7.7. Setting the use of an external thermostat (Thermostat)........................................................................ 27
7.8. Setting an additional heat source (Other thermal) ................................................................................. 28
7.9. Setting an additional heater (Optional E-heater).................................................................................... 30
7.10. Setting the installation of the remote room temperature probe (Ambient sensor) ............................ 31
7.11. Setting the air purging function (Air removal)........................................................................................ 31
7.12. Setting the pre-heating procedure for radiant panels (Floor debug) ................................................... 32
7.13. Activating the defrost cycle (Manual defrost)......................................................................................... 32
7.14. Activating mode forcing (Force mode)..................................................................................................... 33
7.15. Activating auxiliary device management (Gate-Ctrl) ............................................................................. 33
7.16. Setting of max. absorption (A/P limit)...................................................................................................... 33
7.17. Setting the serial address of the unit (Address) ...................................................................................... 34
7.18. Setting the refrigerant recovery function (Refri. recovery).................................................................... 34
7.19. Set the management logic for the compatible Aermec accessory tank heater (elec. tank heater)..... 34
7.20. Set the memory contact function (Memory contact).............................................................................. 35
7.21. Setting the maximum temperature for the DHW storage tank via heat pump only (T HP max)......... 35
7.22. Setting the cooling operating time (Cool run time)................................................................................ 35
7.23. Setting the heating operating time (Heat run time)............................................................................... 35
8. MAIN MENU ................................................................................................................................................ 36
8.1. Navigating the menu................................................................................................................................. 36
8.2. Setting the unit of measurement (Temp. unit) ....................................................................................... 36
8.3. Activating/deactivating the memory (On/off memory) ......................................................................... 36
8.4. Activating/deactivating the sound (Beeper)........................................................................................... 37
8.5. Setting the display lighting (Back light) .................................................................................................. 37
8.6. Setting the system date and time (Time&Date) ...................................................................................... 37
8.7. Selecting the system language (Language)............................................................................................. 38
8.8. Activating the WiFi (WiFi) .......................................................................................................................... 38
8.9. ModBus RS485 connection ....................................................................................................................... 38
9. ALARM CODES............................................................................................................................................ 39

5
2020-02-20 08:52 0.0°C 0.0°C
+
-25°C
Main Page (Home)
Depending on status and active mode, one or more icons may be displayed at the top of the screen:
Icon Meaning
HEATING mode active
COOLING mode active
Domestic hot water mode active
Indicates the measured external temperature
Based on the type of regulation specied on the “Control temp.” Page (Paragraph 7.2):
• Room temperature;
• System delivery temperature;
This icon indicates that an alarm is currently in progress
This icon may indicate that:
• External contact;
• Anti-legionella cycle failed;
1. USER INTERFACE
After startup, the main page (Home) appears on the
display. From this page it will be possible to:
• select one of the menus available to the user;
• turn on / off the unit;
• display information regarding the operating
mode, any active errors, in addition to the system
date and time;
• set the work set and operating mode for the unit.
1.1. Main Page (Home)
NB: after 10 minutes of inactivity, the system will auto-
matically return to the main page.
Key Function
Key to return to the menu selection window
Key to change the operating mode between heating and cooling
Key to enable domestic hot water production (which will add to the operating mode already set)
Button to turn the unit on or o; the color of the button will indicate the status of the unit:
• Green: unit on;
• White: unit o;
while several keys are available at the bottom of the display:

6
Page Content Paragraph
1
Mode 4.2.
Fast hot water 4.3.
Cool+hot water 4.4.
Heat+hot water 4.5.
Quiet mode 4.6.
2
Weather depend 4.7.
Weekly timer 4.8.
Holiday release 4.9.
Disinfection 4.10.
Clock timer 4.11.
3
Temp. timer 4.12.
Emergen. mode 4.13.
Holiday mode 4.14.
Preset mode 4.15.
Error reset 4.16.
4Wi reset 4.17.
Reset 4.18.
Page Content Paragraph
1
Status 6.2.
Parameter 6.3.
Error 6.6.
Error log 6.4
Version 6.6.
2. MENU STRUCTURE
2.1. Function
2.2. View

7
Page Content Paragraph
1
Ctrl.state 7.2.
Cool 2-Way valve 7.3.
Heat 2-Way valve 7.4.
Solar setting 7.5.
Water tank 7.6.
2
Thermostat 7.7.
Other thermal 7.8.
Optional E-heater 7.9.
Ambient sensor 7.10.
Air removal 7.11.
3
Floor debug 7.12.
Manual defrost 7.13.
Force mode 7.14.
Gate-Ctrl 7.15.
Current limit 7.16.
4
Address 7.17.
Refri. recovery 7.18.
Tank heater 7.19
Memory contact 7.20
Page Content Paragraph
1
WOT-Cool
5.2.
WOT-heat
RT-Cool
RT-Heat
T-tank ctrl.
2
ΔT-room temp
5.2.
ΔT-Cool
ΔT-Heat
ΔT-hot water
2.3. Parameter
2.4. Commission (Function)

8
Page Content Paragraph
1
T HP max 7.19.
Cool run time 7.20.
Heat run time 7.21.
Page Content Paragraph
1
Temp. unit 8.2.
On/o memory 8.3.
Beeper 8.4.
Back light 8.5.
Time&Date 8.6.
2Language 8.7.
WiFi 8.8.
2.5. Commission (Parameter)
2.6. General
To switch the unit on or off, press the flag shown in the
figure; once this is done, the system will ask for con-
firmation of the switching on or off through another
window where the on/off command can be confirmed
or cancelled.
16:41
2017-05-04 Fri.
Function Parameter View Commission General
3. BASIC FUNCTIONS
3.1. Switching the unit on and o (On/O)
NOTES:
1. Once the voltage supply has been connected for
the first start-up, this function will be set on“O f f ”.
2. If the relative function is activated (paragraph
8.3), the value of this parameter will be stored
in the memory and automatically reset after any
possible voltage failure.

9
To enter one of the menus available to the user; click
on the corresponding icon; on entering them, each
menu (depending on the one selected) will allow you
to browse the various pages or enter other sub-menus
linked to specific functions.
Press the HOME icon to return to the main page
3.2. Selecting a menu
16:41
2017-05-04 Fri.
Function Parameter View Commission General
4. FUNCTION MENU
4.1. Navigating the menu
This menu is used to set operating functions for the
unit. The following keys are used to navigate this
menu:
• (
1
) Move back to the previous page
• (
2
) Move on to the next page
• (
3
) Go back to the higher level menu
• (
4
) Go back to the main page
• To access a function, click on the text of that
function.
Function (1/4)
Mode: Cool
Fast hot water: Off
Cool + hot water: Hot water
Heat + hot water: Hot water
Quiet mode: Off
3 4
12
NOTES:
1. while navigating the menu pages, the current page of the selected menu will be displayed in the
header (i.e. in the darker upper area)
2. any functions not available will be highlighted by the letters“NA”
Mode
Heat Heat + Hot water
Hot water Cool
Cool + hot water
OK Cancel
NOTES:
1. Before changing the operating mode, the unit must be OFF, otherwise a message will warn you to
turn the unit off before changing the mode.
2. If the compatible Aermec accessory tank for this model (refer to the installation manual for more in-
formation) is not installed and correctly set, the only modes available will be HEATING and COOLING.
3. If the relative function is activated (paragraph 8.3), the value of this parameter will be stored in the
memory and automatically reset after any possible voltage failure.
4. The default value for this parameter is:“Heat“.
4.2. Setting the operating mode (Mode)
after accessing the “Mode” function, you can choose
one of the modes available by clicking directly on the
text that identifies it and then confirming with the
”OK” key.

10
After accessing the “Fast hot water” function, you can
choose whether to activate - along with the unit com-
pressor - the electric heater inserted in the compatible
Aermec accessory tank (specific for this model) for
the production of domestic hot water. To activate this
function, click directly on “ON” and then confirm with
“ O K ”.
Fast hot water
On
Off
OK Cancel
NOTES:
1. If the compatible Aermec accessory tank for this model (refer to the installation manual for more
information) is not installed and correctly set, this function will not be available.
2. To ensure even better energy saving, it is advisable to disable this function.
3. If the relative function is activated (paragraph 8.3), the value of this parameter will be stored in the
memory and automatically reset after any possible voltage failure.
4. The default value for this parameter is:“Off“.
4.3. Activating the function for fast domestic hot water production (Fast hot water)
After accessing the “Cool+hot water” function, you
can select “Cool” to force the unit to first of all satisfy
the system terminal side; by selecting “Hot water”, pri-
ority is given to domestic hot water production. Select
the priority, then press “OK” to confirm.
Cool + hot water
Hot water
Cool
OK Cancel
NOTES:
1. If the compatible Aermec accessory tank for this model (refer to the installation manual for more
information) is not installed and correctly set, this function will not be available.
2. If the relative function is activated (paragraph 8.3), the value of this parameter will be stored in the
memory and automatically reset after any possible voltage failure.
3. The default value for this parameter is:“Cool”.
4.4. Setting the priority between cooling and domestic hot water production (Cool+hot water)

11
After accessing the “Heat+hot water” function, you
can select “Heat” to force the unit to first of all satisfy
the system terminal side; by selecting “Hot water”, pri-
ority is given to domestic hot water production. Select
the priority, then press “OK” to confirm.
Heat + hot water
Hot water
Heat
OK Cancel
NOTES:
1. If the compatible Aermec accessory tank for this model (refer to the installation manual for more
information) is not installed and correctly set, this function will not be available.
2. If the relative function is activated (paragraph 8.3), the value of this parameter will be stored in the
memory and automatically reset after any possible voltage failure.
3. The default value for this parameter is: “Heat”.
4.5. Set the priority between heating and domestic hot water production (Heat+hot water)
After accessing the “Quiet mode” function by clicking
on the label, you can change the value to be assigned
to the function. The possible values are:
• “On” = Function active
• “Off” = Function not active
• “Clock timer” = Function active but in accord-
ance with the time settings provided
If you select “Clock timer”, two keys will appear. Use
them to set the start and end of the “Quiet mode” acti-
vation period. To set the values, press the time label in
question and set the hours and minutes by sliding the
value up or down with your fingertip (the value high-
lighted in blue in the middle of the selection window),
as shown in the figure:
00 00
01 01
02 02
23 59
22 58
Quiet mode
Quiet mode: Timer
Start Timer: 00:00
End Timer: 00:00
NOTES:
1. Every time you press on the label, the value will change. Once you have selected the required value,
press the icon to save and implement the setting.
2. The function can still be set if the unit is Off, but it will only be implemented if the unit is activated.
3. When the function is set to “On”, it will automatically be set to “Off” if the unit is switched off manu-
ally, whereas the setting will remain valid until the end of the selected period if the function value is
set to “Clock timer”.
4. If the relative function is activated (paragraph 8.3), the value of this parameter will be stored in the
memory and automatically reset after any possible voltage failure.
5. The default value for this parameter is: “Off”.
00 00
01 01
02 02
23 59
22 58
Quiet mode
Quiet mode: Timer
Start Timer: 00:00
End Timer: 00:00
4.6. Setting the noise reduction function (Quiet mode)

12
NOTES:
1. The climatic curve can be applied to both the delivery temperature (water adjustment) and the am-
bient air (only if the specific air probe supplied has been installed); you are advised, however, to use
the check on the delivery temperature.
2. The climatic curves can only be applied to heating and cooling, not to domestic hot water produc-
tion.
Weather depend (1/3)
Weather depend: Off
Upper AT Heat: 25°C
Lower AT Heat: -20°C
Upper WT Heat: 55°C
Lower WT Heat: 40°C
3 4
12
4.7. Setting the automatic setting compensation on the basis of external air (Weather depend)
After accessing the “Weather depend” function, you
can set all the parameters related to offsetting work
set-points in accordance with variations in outside air
temperature. The following keys are used to navigate
this menu:
• (
1
) Move back to the previous page
• (
2
) Move on to the next page
• (
3
) Go back to the higher level menu
• (
4
) Go back to the main page (Home)
To activate this function, click on the “Weather de-
pend“ label (the first item on the first page of the func-
tion). Select “On” and then confirm with “OK”.
Subsequently, the values for the various parameters
that make up climatic curves will be set; these param-
eters represent the curves that the system will use to
change the set automatically on the delivery temper-
ature or the ambient air temperature (if an air-based
control has been set, using the specific accessory air
probe) to both hot and cold:
Weather depend
On
Off
OK Cancel
Upper AT Heat
Range: 10~37°C Default: 25°C
+
-25°C
OK Cancel
To set values for each parameter to create the climatic
curves, click on the label of the parameter in question
and set the desired value using the "+" or "-" keys to
enter a value within the permitted range. After setting
the value, press“OK”to confirm and return to the high-
er level.
Lower AT Upper AT
Upper WT
Upper RT
Lower WT
Lower RT

13
3. The function remains active even when the unit has been switched off. To deactivate it, set“Weather
depend: Off manually.”;
4. In the “View” menu, you can see the target value of the climatic curve.
5. The function can still be set if the unit is OFF, but it will only be implemented if the unit is activated.
6. If the relative function is activated (paragraph 8.3), the value of this parameter will be stored in the
memory and automatically reset after any possible voltage failure.
7. The default value for this function is “Off”.
After accessing the “Weekly timer” function, you can
set up to three time bands for each single day of the
week; during these time bands, the unit will work with
the current mode and set-point. Alternatively, you
can assign the “Holiday” value to one day or more; if
the specific “Holiday program“ function is enabled, an
operating set-point of 30°C will be automatically set
if you use the check on the delivery water, or 10°C if
you use the ambient air check (installing the specific
air probe accessory).
Clicking on the label for one of the days of the week
allows access to the page for that day, where you can
assign a value to the day, including:
• “With” = if the Weekly Timer is active, the system
will perform the programmed access as speci-
fied in the data for periods 1, 2 and 3
• “Without” = the Weekly Timer is also active, this
day will not be considered
• “Holiday“ = if the “Holiday release” is active, dur-
ing this day the set will be kept at 30°C (for water
control) or 10°C (for air control)
•
By clicking on the label for one of the periods during
the selected day, you can access the period settings
page. The possible period settings are:
• “With” = the period describes a time band when
the unit is to be used;; in this case, the labels re-
lating to the start and end times for the period
will also be displayed (which will be set first by
clicking on the time label to be set and then
sliding your fingertip over the time values until
you select the ones required; lastly, press the top
right button to save the data entered)
• “Without”= the period will not be used
4.8. Setting a timer for programmed switch-on and/or switch-o (Weekly timer )
Weekly timer
Weekly timer: On
Mon: Valid Tue: Invalid
Wed: Invalid Thur: Invalid
Fri: Invalid Sat: Holiday
Sun: Holiday
Mon
Mon: Valid
Period 1: Invalid
Period 2: Invalid
Period 3: Invalid
00 00
01 01
02 02
23 59
22 58
Period 1
Period 1: Valid
Start Timer: 00:00
End Timer: 00:00
00 00
01 01
02 02
23 59
22 58
Period 1
Period 1: Valid
Start Timer: 00:00
End Timer: 00:00

14
NOTES:
1. Every time you press on the label, the value will change. Once you have selected the required value,
press the icon to save and implement the setting.
2. To make the time settings specified on various days of the week effective, the Weekly Timer must be
set to “On”(by clicking on the Weekly Timer label itself ).
3. The “With” setting for one or more days of the week validates the specified time settings only if the
Weekly Timer is “On”.
4. You can set up to three time bands (periods) for each day; their start and end times must be coherent
(the start of one period must be later than the end of the previous one).
5. If one day or more has been set as “Holiday”, you must activate the “Holiday release” function (ex-
plained in the next paragraph).
6. If the relative function is activated (paragraph 8.3), the value of this parameter will be stored in the
memory and automatically reset after any possible voltage failure.
7. The default value for this function is “Off”.
Holiday release
On
Off
OK Cancel
NB:
1. if one day or more is set on “Holiday” in the weekly timer, this function must be “On” if you want the
program specified in the timer to be respected.
2. The default value for this function is “Off”.
4.9. Enabling the Holiday Program function used for the weekly timer (Holiday release)
After accessing the“Holiday release”function, you can
enable or disable this program if applied as a daily set-
ting on one or more days of the weekly timer. Select
the setting, then press“OK” to confirm.
After accessing the “Disinfection” function, you can
enable or disable this function, as well as choose the
time and day to run it and the temperature to be used.
WARNING: if the unit is used for domestic hot water
production, the Disinfection MUST necessarily be
used.
00 00
01 01
02 02
23 59
22 58
Disinfection
Disinfection: Off
Set clock: 23:00
Set temp.: 70°C
Set day: Mon.
4.10. Enabling/disabling the anti-legionella cycle (Disinfection)

15
NOTES:
1. Every time you press on the label, the value will change. Once you have selected the required value,
press the icon to save and implement the setting.
2. If the compatible Aermec accessory tank for this model (refer to the installation manual for more
information) is not installed and correctly set, this function will not be available.
3. This function can only be activated if the unit is switched off.
4. This function cannot be activated simultaneously with: “Emergen. mode”, “Holiday mode“, “Floor de-
bug“, “Manual defrost“, “Refri. recovery“.
5. If the relative function is activated (paragraph 8.3), the value of this parameter will be stored in the
memory and automatically reset after any possible voltage failure.
6. If the anti-legionella cycle is not completed, the unit will produce a message on the screen to indi-
cate the anomaly. This message can be reset by pressing “OK”.
7. An anti-legionella cycle will automatically be interrupted by any possible communication error or an
error linked to the storage tank accessory.
8. If the relative function is activated (paragraph 8.3), the value of this parameter will be stored in the
memory and automatically reset after any possible voltage failure.
9. The default value for this function is “Off”.
00 00
01 01
02 02
23 59
22 58
Disinfection
Disinfection: Off
Set clock: 23:00
Set temp.: 70°C
Set day: Mon.
Min: 40 Max: 70 X
0
1 2 3
4 5 6
7 8
0 -
9OK
Click on the label relating to the set-point value for
the anti-legionella cycle. This will draw up a numerical
keypad, that you can use to alter the set-point (within
the permitted ranges). Bear in mind that to ensure the
effectiveness of the cycle, it will be maintained for a
certain duration which will increase when the set val-
ue is decreased.

16
00 00
01 01
02 02
23 59
22 58
Clock timer
Clock timer: Off
Mode: Heat
Period: 00:00~00:00
T water tank: 50°C
WOT Heat: 45°C
4.11. Setting a timed switch-on/switch-o (Clock timer)
After accessing the “Clock timer” function, you will be
able to set all the parameters needed for a timed start
of the unit:
• “Clock timer” = enable or disable the timer
• “Mode“ = select the mode to be used during the time
band (each click changes the mode)
• “Period“ = access this page to set the start and
end time for the time band
• “T-tank ctrl.“ = set (if the mode so envisages) the
set for the domestic hot water production stor-
age tank
• “WOT-heat“ = set the value (if envisaged) for the
water production set-point (terminal system
side)
Click on the “Period” label to open the page with the
timer start and end time labels; set by first of all click-
ing on the label of the time you want to set, then slid-
ing your fingertip over the time values until you select
those required. Lastly, press the top right button to
save the data entered.
Click on the labels for parameters with numeric values
to be inserted to display a numeric keypad (with an
indication of the range of permitted values) which you
can use to enter the required values.
00 00
01 01
02 02
23 59
22 58
Clock timer
Start timer: 00:00
End timer: 00:00
00 00
01 01
02 02
23 59
22 58
Min: 20 Max: 60 X
0
1 2 3
45 6
7 8
0 -
9OK
00 00
01 01
02 02
23 59
22 58
Clock timer
Clock timer: Off
Mode: Heat
Period: 00:00~00:00
T water tank: 50°C
WOT Heat: 45°C
NOTES:
1. If the requested mode is“Hot water”, the“WOT-Cool”or “WOT-heat“ parameter will not be displayed.
2. Every time you press on the label, the value will change. Once you have selected the required value,
press the icon to save and implement the setting.
3. If the compatible Aermec accessory tank for this model (refer to the installation manual for more
information) is not installed and correctly set, the references to hot water production will not be
available.
4. If the weekly timer and the standard timer are set at the same time, the weekly timer takes priority.
5. The timer start must always be prior to the timer end, otherwise the period will not be valid.

17
6. The timer for hot water production will only be available if the operating mode envisages hot water
production.
7. The timer function will only work once. If you want to use it again, you must re-set it.
8. The timer is deactivated if the unit is manually switched on before the timer start time.
9. If the relative function is activated (paragraph 8.3), the value of this parameter will be stored in the
memory and automatically reset after any possible voltage failure.
10. The default value for this function is “Off”.
After accessing the “Temp. timer” function, you can
set programmed variations of the water delivery set-
point (this set-point will depend on the currently ac-
tive operating mode). The function can be activated
or deactivated by clicking on the “Temp. timer” label;
click on the “Period 1” label to specify the time at
which the water delivery set-point is to be changed,
setting it to the value specified in the “WOT-heat 1”
parameter (which when clicked will display a numeric
keypad to change its value). Set“Period 2”with related
“WOT-heat 2” in the same way.
Click on the labels for the delivery temperature pa-
rameters to display a numeric keypad (with an indica-
tion of the range of permitted values) which you can
use to enter the required values.
00 00
01 01
02 02
23 59
22 58
Temp. timer
Temp. timer: Off
Period 1: 00:00
WT heat 1: 45°C
Period 2: 00:00
WT heat 2: 45°C
NOTES:
1. Press the icon to save and implement the setting.
2. This function is not available if DHW mode is set.
3. To activate this function, the unit must be enabled.
4. The time bands apply to the current day only.
5. If “Weekly timer”, “Preset mode“,“Clock timer”, “Temp. timer“ are set at the same time, priority is given
to the last one of these to be set.
00 00
01 01
02 02
23 59
22 58
Min: 25 Max: 60 X
0
1 2 3
4 5 6
7 8
0 -
9OK
00 00
01 01
02 02
23 59
22 58
Temp. timer
Temp. timer: Off
Period 1: 00:00
WT heat 1: 45°C
Period 2: 00:00
WT heat 2: 45°C
4.12. Setting programmed setting changes on system water delivery (Temp. timer)

18
6. The setting is only valid if the unit is “On”.
7. Depending on the operating mode defined (heating or cooling), the relative set-points will be used.
8. If the start time of “Period 2”is the same as that of “Period 1”, the first will be implemented.
9. The time bands are based on the timer inside the unit.
10. During hot water production mode, this function is not available.
11. If the relative function is activated (paragraph 8.3), the value of this parameter will be stored in the
memory and automatically reset after any possible voltage failure.
12. The default value for this function is “Off”.
Emergen. mode
On
Off
OK Cancel
NOTES:
1. Emergency mode can only be activated when the unit is OFF, or if the compressor displays an error
and, despite a reset, the error resumes and persists for at least 3 minutes.
2. Emergency mode can only be activated in heating (DHW or Heating, but not simultaneously).
3. Emergency mode cannot be activated without the installation (and activation) of the electric heater
on the storage tank and/or the additional heat source or electric heater.
4. The use of Emergency mode (in Heating) will be blocked if the “HP-Water Switch“, “Auxi. heater 1”,
“Auxi. heater 2“, “Temp AHLW“ errors appear.
5. The use of Emergency mode (in DHW) will be blocked if the“Auxi. WTH“ error appears.
6. None of the functions linked to the timers will be available during Emergency mode.
7. The thermostat cannot be used in Emergency mode.
8. After a voltage failure, Emergency mode returns to the OFF status.
9. Certain functions are not available in Emergency mode so, if you attempt to activate them, the sys-
tem will tell you to disable Emergency mode first.
10. The default value for this function is “Off”.
4.13. Enabling emergency operation for heating or DHW (Emergen. mode)
If the compatible Aermec accessory tank for this mod-
el (refer to the installation manual for more informa-
tion) - and/or an additional heat source (paragraph
7.7) or electric heater (paragraph 7.8) - is installed and
correctly set on the system, you can enable the“Emer-
gency mode” function which excludes the heat pump
for hot water (domestic or system) production, using
only the electric heater of the storage tank and/or the
additional heat source (or electric heater) to meet the
requests. After accessing the “Emergen. mode” func-
tion, you can enable or disable this program; you must
then press “OK” to confirm.

19
You can use the weekly timer to assign the “Holiday”
program to at least one day of the week. On those
days, the unit will work in heating mode, maintaining
a 30°C set-point on delivery water (or 10°C if the check
is based on the ambient air). To enable the implemen-
tation of the Holiday Program (if set on the weekly
timer), you must activate this function.
After accessing the “Holiday mode” function, you can
choose one of the modes available by clicking directly
on the text that identifies it and then confirming with
the ”OK” key.
Holiday mode
On
Off
OK Cancel
NOTES:
1. Before changing the operating mode, the unit must be OFF, otherwise a message will warn you to
turn the unit off before changing the mode.
2. During the use of Holiday mode (as set in the weekly timer), the operating mode will be automatical-
ly set on “Heating” and the On/Off command from the panel cannot be used.
3. None of the functions linked to the timers will be available during Holiday mode.
4. Certain functions are not available in Emergency mode so, if you attempt to activate them, the sys-
tem will tell you to disable Emergency mode first.
5. If the relative function is activated (paragraph 8.3), the value of this parameter will be stored in the
memory and automatically reset after any possible voltage failure.
6. The default value for this function is “Off”.
4.14. Setting the winter period absence function (Holiday mode)
This function is used to set one to four daily periods,
whose commands will then be executed every day.
After accessing the “Preset mode” function, you can
press the key for each period to activate or deactivate
an individual period, choose the operating mode to
be used, the temperature set-point for processed wa-
ter, and the start and end times of the period itself.
Clicking on the "Period" label will open the page with
the labels relating to period activation, the mode to
be used during the period, the water delivery tem-
perature and the start and end times. Click on each of
these to set the appropriate value (each data item may
draw up additional windows for selecting or entering
the required values). Lastly, press the top right button
to save the data entered.
4.15. Setting the daily timer programming (Preset mode)
Preset mode
Period 1: Valid
Period 2: Invalid
Period 3: Invalid
Period 4: Invalid
Preset mode
Period 1: Valid
Mode: Heat
WOT Heat: 45°C
Start timer: 00:00
End timer: 00:00
NOTES:
1. If the compatible Aermec accessory tank for this model (refer to the installation manual for more
information) is not installed and correctly set, the“DHW” function will not be available.
2. If timer programming with the Weekly timer and other settings with Preset mode have been entered

20
simultaneously, the latter will take priority.
3. Up to four time bands can be set for each day, but their start and end times must coherent (the be-
ginning of one period must be later than the end of the previous period).
4. If the unit is switched on manually, the period timer programs will not be implemented.
5. If the relative function is activated (paragraph 8.3), the value of this parameter will be stored in the
memory and automatically reset after any possible voltage failure.
6. The default value for this function is “Off”.
NB: this function can only be performed if the unit is switched off.
4.16. Deleting current errors (Error reset)
This function is used to reset any errors active on the system. This operation must only be performed after
having resolved the alarm condition signalled. To reset the alarms, press on the function label and then
confirm with “OK” in the dialogue box.
This function is used to reset the WiFi connection, eliminating any conflicts.
This function is used to load the default values (values pre-set in the factory) for all functions by resetting
the changes made by the user.
NOTES:
1. This function can only be performed if the unit is switched off.
2. This function interacts with the “Temp. timer“, “Clock timer“, “Preset mode“, “Weekly timer“ and
“Weather depend” functions.
4.17. WiFi connection reset function (Wi reset)
4.18. Loading the default settings (Reset)
5. PARAMETER MENU
5.1. Navigating the menu
This menu is used to set the machine adjustment
values. The following keys are used to navigate this
menu:
• (
1
) Move back to the previous page
• (
2
) Move on to the next page
• (
3
) Go back to the higher level menu
• (
4
) Go back to the main page (Home);
• To access a function, click on the text of that
function.
Parameter (1/2)
WOT Cool: 18°C
WOT Heat: 20°C
RT Cool: 24°C
RT Heat: 20°C
T water tank: 50°C
3 4
12
NB: while navigating the menu pages, the current page of the selected menu will be displayed in the
header (i.e. in the darker upper area).