4
Outdoor temp.
H1 Supply water
H2 Supply water
DHW Supply water
Automatic
Automatic
Automatic
-12.4°C
45.2°C
32.8°C
58.0°C
13:51 06.02.2021
Selection >
2
Central factors related to controlling heating are visible in the regulator’s basic view. When the unit is idle
state (keys have not been touched for a while) the display shows the basic view.
Different levels of display menus are used to make the S203 clear and easy to use. The basic view shows the
most important information for monitoring operation of the unit. Favourite views that can be changed by us-
ers enable them to easily access desired menus. Setting values needed by the user can easily be found in the
versatile menu structure.
1 Display menus
• A blinking exclamation
point means the unit has
active alarms.
• The number indicates the
number of active alarms.
Symbol indicates that
alarms are disabled.
Temperature measurements en-
able quickly determining proper
operation of the circuit.
Circuit control. This shows whether the cir-
cuit’s heating level has been continuously
forced to a particularly level or if the con-
troller is in manual mode.
Alarm indication
1.1 Basic view
