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Siemens
Room temperature controllers with LCD
N3075en
Building Technologies
17.04.2009
Output Q33-Q34 is for connection to the auxiliary electric heater which is only available
in heating mode, provided parameter P16 is set to 1 (enable). The minimum on time
can be changed via parameter P13 (factory setting is 1 minute).
Auto Timer mode
The controller provides an Auto Timer mode with 8 programmable time switches. Each
time switch can be assigned one or several days. In this mode, the controller switches
automatically between Comfort mode and Energy Saving mode according to the pro-
grammed time switches.
Auto timer in Comfort mode
Auto timer in Energy Saving mode
Each time switch has a start time and end time for Comfort mode which can be applied
to several weekdays.
To set the time schedule, keep button depressed for 3 seconds to go to the pro-
grammable timer setting mode. This mode is indicated by displaying Ax (x = auto timer
1...8) and the time of day --:-- blinking.
For each time switch, proceed as follows:
1. Symbols and are displayed. Press or to set the Comfort mode start time
and confirm by pressing
.
2. Symbols and are displayed. Press or to set the start time for Comfort
mode or Energy Saving mode and confirm by pressing
.
3. Symbol
1
will flash. Press to select or to deselect each day and advance to
the next day. Confirm setting for actual timer by pressing
and advance to
the next timer.
The controller leaves the programmable time switch setting mode if no button is
pressed within 20 seconds. All changes made after the last press of
will not be
saved.
Auxiliary electric heater
RDX43.2
Setting the time
switches