The controller in the Dual Sensor version (with an additional
temperature sensor) has the emergency transmitter operation
function.
When the voltage battery is too low (the indicator on the display),
the user may decide to switch the transmitter off or to switch it on
permanently.
In the menu of the controller, the Pr OFF setting (transmitter
switched off permanently) or Pr ON setting (transmitter switched on
permanently) can be selected.
The controller maintains those settings until new batteries are
installed (the low battery voltage indicator is switched off).
If the external sensor is disconnected or defective, the display shows
two lines in the temperature measurement field and the controller
switches automatically into the anti-freeze operation mode.
In such a case, a new external sensor must be installed or the
controller must be reset by taking out the battery for several
minutes, which causes the controller to switch into the mode of
operation with an external sensor.
40 41
If the external sensor is disconnected or damaged, the controller goes to
the emergency mode (dashes are displayed instead of temperature)
which results in turning off the transmitter and then the controlled
device. To leave the emergency mode, reconnect or reset the controller
by pressing and holding two buttons simultaneously: and .
After that, the controller will return to displaying the temperature from
the internal sensor.
[prog] [sm]
External temperature sensor (AURATON 3021 P)
Terminal
block
External
temperature sensor
In AURATON 3021 P it is possible to connect an external temperature
sensor with the 2.5m cable.
In the default configuration the controller will display the temperature
from the internal temperature sensor. The controller automatically
switches to displaying the outside temperature when the external
sensor is connected.
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