Altherma User Interface
Quick User Guide
Altherma User Interface
Altherma User Interface
ON/OFF Button 1.
Operation Light 2.
Current Operation Mode Icons 3.
Day/Time 4.
9. External Control Icon
Temperature Icon 5.
Programming Button 6.
Timer Adjust Buttons 7.
Water Temperature Adjust
Buttons 8.
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ARC448A3
1.
ON/OFF Button:
(not active when external
control is used)
2.
Operation Light:
Lit when system is Heating or
Cooling. Blinks in the event of system
malfunction.
3.
Current Operation Mode:
These icons
represent the current operation mode:
6.
Programming Button:
This multi-purpose button
is used to program the controller. The function of
the button depends on the actual status of the
controller or on previous actions carried out by
the operator.
7.
Timer Adjust Buttons:
These multi-purpose
buttons are used to adjust the clock, to toggle
between temperatures (water outlet temperature
of hydro-box section outdoor ambient
In some instances more than one mode icon can
be displayed at the same time. If the solar
option is installed and active the domestic water
heater icon will be blinking.
4
Day/Time:
The time display indicates the
of hydro-box section, outdoor ambient
temperature and domestic hot water
temperature) and in schedule timer programming
mode.
8.
Water Temperature Adjust Buttons:
These multi-
purpose buttons are mainly used to control
leaving water set point for Heating/Cooling
Operation. They are also used for several
programming actions; schedule timer, outdoor
Heat
Cool
Domestic Water Heating
Quiet Mode
Compressor
Pump
Backup Heater Steps 1 & 2
Booster Heating
4.
Day/Time:
The time display indicates the
current time(or the action day time when
reading or programming the schedule timer).
The day of the week indicator shows the current
weekday (or the set day when reading or
programming the schedule timer). Clock is 24hr
format.
5.
Temperature Icon:
This icon is displayed when
the water outlet temperature of the indoor unit,
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reset and setting day of the week.
9.
External Control Icon:
This icon indicates that the
room thermostat (optional) is controlling
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Heating/Cooling Water Set Point Range
Heating Cooling
59 - 131°F (15 – 55°C) 41 - 71°F (5 - 22°C)
QUG-Altherma Interface 01.2011
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the outdoor ambient and the domestic hot
water tank temperature are shown. The icon is
also displayed when the temperature set point
is set in the schedule timer programming mode.
occupied space temperature. This external room
thermostat can start and stop the space
heating/cooling operation and change the
operation mode (heating/cooling).
