LRA4
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45.016
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Sauter Components
Addressing the room operating units on the wireless controller
When the system is put into operation for the first time, the radio connection must be set up between
the room operating unit and the wireless controller. Addressing is not lost when batteries are replaced.
After the desired channel (one or more) has been selected on the wireless controller, the 'OK' and
'Escape' buttons must be pressed for 5 s. 'Pair' appears briefly on the display, denoting that the con-
nection between the thermostat and the controller has been established.
To test the connection, these two buttons can be pressed again for 5 s. During the 5 s, 'Pair' briefly
lights up on the display, followed by 'Test', along with the relevant channel LED on the controller.
After the addressing, the time and date must be entered as follows: hours, minutes, year, month and
day. The '+' and '-' buttons are used to change the values, and each step should be confirmed with the
'OK' button. When the time has been entered in the first room operating unit, this time is forwarded to
all room operating units in the system (master controller to slave controller). If the time has not been
entered on the first addressed unit, this is queried on the next unit. If the 'OK' button is pressed for 10
s, the time and date can be called up and changed. An automatic summertime/wintertime change-
over is stored. This can be deactivated in service mode using parameters.
Basic functions
After the addressing, the device switches to sleep mode after 10 s. The display shows the actual
temperature, the radio transmission, the ECO symbol, the day and, if the battery is low, the battery
symbol. Pressing any button switches the device on, and the device obtains the current data from the
wireless controller. The unit must be switched on before any entry, parameterisation or function
change can be made.
The setpoint can be set by pressing the '+' or '-' button again. After 5 s, or immediately after the 'OK'
button is pressed, the selected setpoint is automatically sent to the wireless controller and saved
there. After that, the actual temperature value is retrieved every 10 minutes.
By pressing the 'Menu' button again, it is possible to switch between the frost protection mode (Off),
ECO, normal operation or the time programme. If the room operating unit is configured so that
change-over between heating and cooling was programmed, these two modes are also available.
The button lock is activated by pressing the '+' and '-' buttons for 5 s. The 'button lock' symbol appears
on the display, also in sleep mode. The lock is removed by pressing both buttons again for 5 s.
If the 'Menu' button is pressed again for 5 s, the display shows the first level of the parameter settings.
If the 'Menu' button is briefly pressed again, the parameters up to P-SE, parameters of the service
level, are shown.
Time programmes
Stored in the wireless controller are three time programmes that can be altered using the wireless
room control unit. Whenever a time programme is altered, it is adopted by all the other room operating
units that use the same profile.
Time programme I:
A profile for all days of the week; three switching points are available. Time programme I includes only
one profile; the profile is identical for every day.
Time programme II:
A profile for the working days of Monday to Friday and a profile for the weekend. Three switching
points are available for all working days, and three additional switching points are available for the
weekend.
Time programme III:
A profile for every day; three switching points are available for each day. With time programme III, you
can choose different profiles for each day.
A switching point always consists of two change-over points. A time must be specified for each
change-over point. For the first change-over point, the time for the change from 'Reduced Mode' to
'Normal Mode' is set. For the second change-over point, the time for the switch from 'Normal Mode' to
'Reduced Mode' is set.
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