3. Press
+
or
-
to set the current weekday.
4. Confirm the current weekday by pressing
ok
.
Power failure
In case of a power failure, the clock will stop, but its last running time will be stored.
This time information will be reloaded and start running after a power up. The clock will
flash to indicate that there was a power failure until the time will be confirmed by press-
ing
ok
or readjusted by following the above procedure.
Error handling
When the room temperature is out of the measuring range, which means above 49 °C
or below 0 °C, the display shows the limiting temperature in flashing figures, e.g. “0 °C”
or “49 °C”.
If the current setpoint is not OFF (see parameters 1-4) and the controller is in heating
mode, and the temperature is below 0 °C, output Y11 will be energized. In all other
cases, output Y11 will be deenergized. When the temperature returns to the measuring
range, the controller will resume Normal operation.
Temperature out
of range
Infrared remote control
The RDF310.21 and RDF410.21 have an infrared receiver built in. Together with the
IRA210 infrared remote control, the following operations can be performed from a re-
mote location:
•
Selection of operating mode: Standby, Normal operation or Auto Timer
•
Adjustment of setpoint in Normal operation
•
Selection of fan mode: Automatic or manual fan speed
A buzzer in the thermostat indicates receiving of a command from the remote control
Using parameter P25, infrared remote control can be disabled.
Control parameters
A number of control parameters can be readjusted to optimize the control performance.
These parameters can also be set during operation without opening the unit. In the
event of a power failure, all control parameter settings will be maintained.
7/14
Siemens
Room Temperature Controllers
N3067en
Building Technologies
01.10.2007
