6/14
Siemens
Room temperature controller with LCD
N3075en
Building Technologies
17.04.2009
Press
to sequentially review the 8 time switches.
Time switches A1…A4 have the following factory settings:
Day(s)
Times of day when controller is in Comfort mode
Mo (1) – Fr (5)
06:30 – 08:30 (A1)
17:30 – 22:30 (A2)
Sa (6)
08:00 – 23:00 (A3)
So (7)
08:00 – 22:30 (A4)
- During remaining times, controller is in Energy Saving mode
- Time switches A5…A8 are free (no factory settings made)
The settings of the time switches can be changed to suit individual needs. The factory
settings can be retrieved any time:
1.
Set the controller to Protection mode .
2.
Press and simultaneously for 3 seconds. Release the buttons and, within 2
seconds, press 2 times.
The display shows “8888“ during this process.
In the second case, or when several time switch sequences overlap, the resulting out-
put is the OR combination of the Comfort mode time of all time switches.
The 7-day
time
switch
supports
the 12-
hour and
24-hour
format.
Parameter P17 = 0 (12 h) or = 1 (24 = factory setting).
1. Keep the button depressed until the time digits start blinking.
Press or to set the time of day.
2. Confirm the time of day by pressing
and the weekday indicator starts blinking.
3. Press or to set the current weekday.
4. Confirm by pressing
.
In the event of a power failure, the time, date, last operating mode, last heating/cooling
changeover status, setpoint and auto timer program will be stored. When power re-
turns, this time reappears and starts running again. The time display blinks to indicate
that there was a power failure. Blinking stops when the time and the day are confirmed
by pressing
, or when the time is readjusted by following the above procedure.
Replace / remove battery when the “low battery” symbol is activated. The time, date,
last operating mode, last heating/cooling changeover status, setpoint and auto timer
program will be stored.
Error handling
If the room temperature is out of the measuring range (above 50 °C or below 0°C), the
display shows the limiting temperature in blinking figures (e.g. 50 °C or 0 °C).
Should the built-in sensor become defective, the display will show “Err” blinking to draw
the user‘s attention.
Viewing the time
switches
Factory settings of
time switches
Retrieving the factory
settings
Overlapping of time
switch sequences
7-day time switch
Setting the clock
Power failure
Symbol “low battery”
Temperature out of
measuring range
Failure of built-in
sensor
A1=09:00-22:00
A2=12:00-20:00
09:00
12:00
20:00 22:00
Resulting output
= 09:00-22:00
